U.S. patent application number 16/245004 was filed with the patent office on 2019-05-02 for substituted pyrazolo[1,5-a]pyridine compounds as ret kinase inhibitors.
The applicant listed for this patent is Array BioPharma Inc.. Invention is credited to Steven W. Andrews, James F. Blake, Mark J. Chicarelli, Adam Golos, Julia Haas, Yutong Jiang, Gabrielle R. Kolakowski.
Application Number | 20190127375 16/245004 |
Document ID | / |
Family ID | 56507905 |
Filed Date | 2019-05-02 |
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United States Patent
Application |
20190127375 |
Kind Code |
A1 |
Andrews; Steven W. ; et
al. |
May 2, 2019 |
SUBSTITUTED PYRAZOLO[1,5-A]PYRIDINE COMPOUNDS AS RET KINASE
INHIBITORS
Abstract
Provided herein are compounds of the General Formula I:
##STR00001## and stereoisomers and pharmaceutically acceptable
salts or solvates thereof, in which A, B, D, E, X.sup.1, X.sup.2,
X.sup.3 and X.sup.4 have the meanings given in the specification,
which are inhibitors of RET kinase and are useful in the treatment
and prevention of diseases which can be treated with a RET kinase
inhibitor, including diseases or disorders mediated by a RET
kinase.
Inventors: |
Andrews; Steven W.;
(Boulder, CO) ; Blake; James F.; (Boulder, CO)
; Chicarelli; Mark J.; (Boulder, CO) ; Golos;
Adam; (Boulder, CO) ; Haas; Julia; (Boulder,
CO) ; Jiang; Yutong; (Boulder, CO) ;
Kolakowski; Gabrielle R.; (Boulder, CO) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Array BioPharma Inc. |
Boulder |
CO |
US |
|
|
Family ID: |
56507905 |
Appl. No.: |
16/245004 |
Filed: |
January 10, 2019 |
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Application
Number |
Filing Date |
Patent Number |
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16241839 |
Jan 7, 2019 |
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16245004 |
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15858658 |
Dec 29, 2017 |
10174027 |
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16241839 |
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15211702 |
Jul 15, 2016 |
10023570 |
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15858658 |
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62193448 |
Jul 16, 2015 |
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62274018 |
Dec 31, 2015 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61K 31/506 20130101;
A61P 35/00 20180101; A61K 31/444 20130101; A61K 31/496 20130101;
A61K 45/06 20130101; A61K 31/4545 20130101; C07D 519/00 20130101;
A61K 31/497 20130101; A61P 43/00 20180101; A61P 1/00 20180101; C07D
471/04 20130101; A61K 31/5377 20130101; A61P 35/04 20180101; A61P
29/00 20180101; A61K 31/55 20130101; A61K 31/499 20130101 |
International
Class: |
C07D 471/04 20060101
C07D471/04; A61K 31/5377 20060101 A61K031/5377; A61K 31/506
20060101 A61K031/506; C07D 519/00 20060101 C07D519/00; A61K 31/497
20060101 A61K031/497; A61K 31/55 20060101 A61K031/55; A61K 31/4545
20060101 A61K031/4545; A61K 31/444 20060101 A61K031/444; A61K
31/499 20060101 A61K031/499; A61K 45/06 20060101 A61K045/06; A61K
31/496 20060101 A61K031/496 |
Claims
1. A method of treating a RET-associated cancer in a subject in
need thereof, wherein the cancer has a RET mutation selected from
the group consisting of: S32L, D34S, L40P, P64L, R67H, R114H,
V145G, V292M, R330Q, R360W, F393L, A510V, E511K, G513D, C515W,
G533S, G550E, V591I, G593E, I602V, K603Q, C609W, C618W, F619F,
C620L, E623K, D624N, C630R, C630Y, C630A, D631N, D631A, D631G,
D631V, D631E, E632K, E632G, C634A, C634L, C634T, R635G, T636M,
A640G, A641S, A641T, V648I, A664D, H665Q, K666M, K666N, S686N,
R694Q, M700L, V706M, V706A, E713K, G736R, G748C, A750P, S765P,
P766M, E768Q, L769L, R770Q, D771N, N777S, Q781R, E805K, Y806E,
Y806F, Y806G, E818K, S819I, G823E, Y826M, Y826S, P841L, P841P,
E843D, R844W, M848T, I852M, R873W, A876V, L881V, A883F, A883S,
A883T, E884K, R886W, R897Q, D898V, E901K, S904F, K907E, K907M,
R908K, G911D, R912Q, M918V, M918L, A919V, E921K, S922Y, F961L,
R972G, R982C, M1009V, D1017N, V1041G, M1064T, G321R, C515S, G533C,
R600Q, K603E, Y606C, C609S, C609G, C609R, C609F, C609W, C609C,
C611S, C611F, C611R, C611G, C611W, C618Y, C618R, C618F, C618G,
C620S, C620G, C620F, C620Y, C620W, C630F, C630S, D631Y, T636P,
S649L, K666E, G691S, P766S, E768D, V778I, L790F, Y791F, R833C,
R844L, R844Q, A866W, S904C, R912P, S922P, and T930M, the method
comprising administering to the subject a compound selected from
the group consisting of:
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(l-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyridin-2-yl)acetyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-(2,6-difluorobenzoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate;
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N,N-diethylpiperazine-1-carboxamide;
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-(2-methoxy-3-methylbutyl)piperidine-4-carboxamide;
4-(6-(4-(2-(5-fluoropyridin-2-yl)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate);
4-(6-(4-(2,6-difluorobenzyl)piperazin-1-yl)pyridine-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-(2-methoxybenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
BLU667
((1s,4R)--N--((S)-1-(6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)ethyl)-1-me-
thoxy-4-(4-methyl-6-((5-methyl-1H-pyrazol-3-yl)amino)pyrimidin-2-yl)cycloh-
exane-1-carboxamide); and RXDX-105
(1-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)-3-(5-(1,1,1-trifluoro-2-me-
thylpropan-2-yl)isoxazol-3-yl)urea); or a pharmaceutically
acceptable salt thereof.
2. The method of claim 1, wherein the compound is
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile,
or a pharmaceutically acceptable salt thereof.
3. The method of claim 1, wherein the compound is
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyridin-2-yl)acetyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
4. The method of claim 1, wherein the compound is
4-(6-(4-(2,6-difluorobenzoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate, or a pharmaceutically acceptable salt
thereof.
5. The method of claim 1, wherein the compound is
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N,N-diethylpiperazine-1-carboxamide or a
pharmaceutically acceptable salt thereof.
6. The method of claim 1, wherein the compound is
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-(2-methoxy-3-methylbutyl)piperidine-4-carboxamide, or
a pharmaceutically acceptable salt thereof.
7. The method of claim 1, wherein the compound is
4-(6-(4-(2-(5-fluoropyridin-2-yl)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate), or a pharmaceutically acceptable salt
thereof.
8. The method of claim 1, wherein the compound is
4-(6-(4-(2,6-difluorobenzyl)piperazin-1-yl)pyridine-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
9. The method of claim 1, wherein the compound is
4-(6-(4-(2-methoxybenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
10. The method of claim 1, wherein the compound is
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
11. The method of claim 1, wherein the compound is
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
12. The method of claim 1, wherein the compound is BLU667
((1s,4R)--N--((S)-1-(6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)ethyl)-1-me-
thoxy-4-(4-methyl-6-((5-methyl-1H-pyrazol-3-yl)amino)pyrimidin-2-yl)cycloh-
exane-1-carboxamide), or a pharmaceutically acceptable salt
thereof.
13. The method of claim 1, wherein the compound is RXDX-105
(1-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)-3-(5-(1,1,1-trifluoro-2-me-
thylpropan-2-yl)isoxazol-3-yl)urea), or a pharmaceutically
acceptable salt thereof.
14. A method of treating a RET-associated cancer in a subject in
need thereof, wherein the cancer has a RET mutation selected from
the group consisting of: C609Y, C611Y, C618S, C620R, C634R, C634S,
C634G, C634Y, and C634F, the method comprising administering to the
subject a compound selected from the group consisting of:
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyridin-2-yl)acetyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-(2,6-difluorobenzoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate;
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N,N-diethylpiperazine-1-carboxamide;
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-(2-methoxy-3-methylbutyl)piperidine-4-carboxamide;
4-(6-(4-(2-(5-fluoropyridin-2-yl)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate);
4-(6-(4-(2,6-difluorobenzyl)piperazin-1-yl)pyridine-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-(2-methoxybenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile; and
BLU667
((1s,4R)--N--((S)-1-(6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)ethyl)-1-me-
thoxy-4-(4-methyl-6-((5-methyl-1H-pyrazol-3-yl)amino)pyrimidin-2-yl)cycloh-
exane-1-carboxamide); or a pharmaceutically acceptable salt
thereof.
15. The method of claim 14, wherein the compound is
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(l-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile,
or a pharmaceutically acceptable salt thereof.
16. The method of claim 14, wherein the compound is
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyridin-2-yl)acetyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
17. The method of claim 14, wherein the compound is
4-(6-(4-(2,6-difluorobenzoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate, or a pharmaceutically acceptable salt
thereof.
18. The method of claim 14, wherein the compound is
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N,N-diethylpiperazine-1-carboxamide or a
pharmaceutically acceptable salt thereof.
19. The method of claim 14, wherein the compound is
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-(2-methoxy-3-methylbutyl)piperidine-4-carboxamide, or
a pharmaceutically acceptable salt thereof.
20. The method of claim 14, wherein the compound is
4-(6-(4-(2-(5-fluoropyridin-2-yl)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate), or a pharmaceutically acceptable salt
thereof.
21. The method of claim 14, wherein the compound is
4-(6-(4-(2,6-difluorobenzyl)piperazin-1-yl)pyridine-3-yl)-6-(1-methyl-H-p-
yrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
22. The method of claim 14, wherein the compound is
4-(6-(4-(2-methoxybenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
23. The method of claim 14, wherein the compound is
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
24. The method of claim 14, wherein the compound is
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
25. The method of claim 14, wherein the compound is BLU667
((1s,4R)--N--((S)-1-(6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)ethyl)-1-me-
thoxy-4-(4-methyl-6-((5-methyl-1H-pyrazol-3-yl)amino)pyrimidin-2-yl)cycloh-
exane-1-carboxamide), or a pharmaceutically acceptable salt
thereof.
26. A method of treating a RET-associated cancer in a subject in
need thereof, wherein the cancer has a RET mutation selected from
the group consisting of: V804M, V804L, V804E, Y806C, Y806S, S891A,
and M918T, the method comprising administering to the subject a
compound selected from the group consisting of:
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyridin-2-yl)acetyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-(2,6-difluorobenzoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate;
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N,N-diethylpiperazine-1-carboxamide;
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-(2-methoxy-3-methylbutyl)piperidine-4-carboxamide;
4-(6-(4-(2-(5-fluoropyridin-2-yl)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate);
4-(6-(4-(2,6-difluorobenzyl)piperazin-1-yl)pyridine-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-(2-methoxybenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile;
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile; and
RXDX-105
(1-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)-3-(5-(1,1,1-trifl-
uoro-2-methylpropan-2-yl)isoxazol-3-yl)urea); or a pharmaceutically
acceptable salt thereof.
27. The method of claim 26, wherein the compound is
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[,5-a]pyridine-3-carbonitrile, or
a pharmaceutically acceptable salt thereof.
28. The method of claim 26, wherein the compound is
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyridin-2-yl)acetyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
29. The method of claim 26, wherein the compound is
4-(6-(4-(2,6-difluorobenzoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate, or a pharmaceutically acceptable salt
thereof.
30. The method of claim 26, wherein the compound is
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N,N-diethylpiperazine-1-carboxamide or a
pharmaceutically acceptable salt thereof.
31. The method of claim 26, wherein the compound is
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-(2-methoxy-3-methylbutyl)piperidine-4-carboxamide, or
a pharmaceutically acceptable salt thereof.
32. The method of claim 26, wherein the compound is
4-(6-(4-(2-(5-fluoropyridin-2-yl)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate), or a pharmaceutically acceptable salt
thereof.
33. The method of claim 26, wherein the compound is
4-(6-(4-(2,6-difluorobenzyl)piperazin-1-yl)pyridine-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
34. The method of claim 26, wherein the compound is
4-(6-(4-(2-methoxybenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
35. The method of claim 26, wherein the compound is
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
36. The method of claim 26, wherein the compound is
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile, or a
pharmaceutically acceptable salt thereof.
37. The method of claim 26, wherein the compound is RXDX-105
(1-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)-3-(5-(1,1,1-trifluoro-2-me-
thylpropan-2-yl)isoxazol-3-yl)urea), or a pharmaceutically
acceptable salt thereof.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser.
No. 16/241,839, filed Jan. 7, 2019, which is a continuation of U.S.
application Ser. No. 15/858,658, filed Dec. 29, 2017, which is a
continuation of U.S. application Ser. No. 15/211,702, filed Jul.
15, 2016, which claims priority to U.S. Provisional Application
Ser. No. 62/193,448, filed Jul. 16, 2015 and 62/274,018, filed Dec.
31, 2015, all of which are hereby incorporated by reference in
their entireties.
BACKGROUND
[0002] The present disclosure relates to novel compounds which
exhibit Rearranged during Transfection (RET) kinase inhibition,
pharmaceutical compositions comprising the compounds, processes for
making the compounds, and the use of the compounds in therapy. More
particularly, it relates to substituted pyrazolo[1,5-a]pyridine
compounds useful in the treatment and prevention of diseases which
can be treated with a RET kinase inhibitor, including
RET-associated diseases and disorders.
[0003] RET is a single-pass transmembrane receptor belonging to the
tyrosine kinase superfamily that is required for normal
development, maturation and maintenance of several tissues and cell
types (Mulligan, L. M., Nature Reviews Cancer, 2014, 14, 173-186).
The extracellular portion of the RET kinase contains four
calcium-dependent cadherin-like repeats involved in ligand binding
and a juxtamembrane cysteine-rich region necessary for the correct
folding of the RET extracellular domain, while the cytoplasmic
portion of the receptor includes two tyrosine kinase
subdomains.
[0004] RET signaling is mediated by the binding of a group of
soluble proteins of the glial cell line-derived neurotrophic factor
(GDNF) family ligands (GFLs), which also includes neurturin (NTRN),
artemin (ARTN) and persephin (PSPN) (Arighi et al., Cytokine Growth
Factor Rev., 2005, 16, 441-67). Unlike other receptor tyrosine
kinases, RET does not directly bind to GFLs and requires an
additional co-receptor: that is, one of four GDNF family
receptor-.alpha. (GFR.alpha.) family members, which are tethered to
the cell surface by a glycosylphosphatidylinositol linkage. GFLs
and GFR.alpha. family members form binary complexes that in turn
bind to RET and recruit it into cholesterol-rich membrane
subdomains, which are known as lipid rafts, where RET signaling
occurs.
[0005] Upon binding of the ligand-co-receptor complex, RET
dimerization and autophosphorylation on intracellular tyrosine
residues recruits adaptor and signaling proteins to stimulate
multiple downstream pathways. Adaptor protein binding to these
docking sites leads to activation of Ras-MAPK and PI3K-Akt/mTOR
signaling pathways or to recruitment of the CBL family of ubiquitin
ligases that functions in RET downregulation of the RET-mediated
functions.
[0006] Aberrant RET expression and/or activity have been
demonstrated in different cancers and in gastrointestinal disorders
such as irritable bowel syndrome (IBS).
SUMMARY OF THE INVENTION
[0007] It has now been found that substituted
pyrazolo[1,5-a]pyridine compounds are inhibitors of RET kinase, and
are useful for treating diseases such as proliferative diseases
including cancers.
[0008] Accordingly, provided herein is a compound of the General
Formula I:
##STR00002##
[0009] or a pharmaceutically acceptable salt or solvate thereof,
wherein A, B, D, E, X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are as
defined herein.
[0010] Also provided herein is a pharmaceutical composition
comprising a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, in admixture with a
pharmaceutically acceptable diluent or carrier.
[0011] Also provided herein is a method of inhibiting cell
proliferation, in vitro or in vivo, the method comprising
contacting a cell with an effective amount of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
or a pharmaceutical composition thereof as defined herein.
[0012] Also provided herein is a method of treating a
RET-associated disease or disorder in a patient in need of such
treatment, the method comprising administering to the patient a
therapeutically effective amount of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof, or a
pharmaceutical composition thereof as defined herein.
[0013] Also provided herein is a method of treating cancer and/or
inhibiting metastasis associated with a particular cancer in a
patient in need of such treatment, the method comprising
administering to the patient a therapeutically effective amount of
a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof or a pharmaceutical composition thereof as
defined herein.
[0014] Also provided herein is a method of treating irritable bowel
syndrome (IBS) and/or pain associated with IBS in a patient in need
of such treatment, the method comprising administering to the
patient a therapeutically effective amount of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
or a pharmaceutical composition thereof as defined herein.
[0015] Also provided is a method of providing supportive care to a
cancer patient, including preventing or minimizing gastrointestinal
disorders, such as diarrhea, associated with treatment, including
chemotherapeutic treatment, the method comprising administering to
the patient a therapeutically effective amount of a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof or a pharmaceutical composition thereof as defined
herein.
[0016] Also provided herein is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, or a
pharmaceutical composition thereof as defined herein for use in
therapy.
[0017] Also provided herein is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof as defined herein for use in the
treatment of cancer and/or inhibiting metastasis associated with a
particular cancer.
[0018] Also provided herein is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof as defined herein for use in the
treatment of irritable bowel syndrome (IBS) or pain associated with
IBS.
[0019] Also provided is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof as defined herein for use
providing supportive care to a cancer patient, including preventing
or minimizing gastrointestinal disorders, such as diarrhea,
associated with treatment, including chemotherapeutic
treatment.
[0020] Also provided herein is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof for use in the
inhibition of RET kinase activity.
[0021] Also provided herein is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof as defined herein, for use in
the treatment of a RET-associated disease or disorder.
[0022] Also provided herein is the use of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
as defined herein in the manufacture of a medicament for the
treatment of cancer and/or inhibiting metastasis associated with a
particular cancer.
[0023] Also provided herein is the use of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
as defined herein in the manufacture of a medicament for the
treatment of irritable bowel syndrome (IBS) or pain associated with
IBS.
[0024] Also provided herein is the use of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
as defined herein in the manufacture of a medicament for providing
supportive care to a cancer patient, including preventing or
minimizing gastrointestinal disorders, such as diarrhea, associated
with treatment, including chemotherapeutic treatment.
[0025] Also provided herein is a use of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
as defined herein in the manufacture of a medicament for the
inhibition of RET kinase activity.
[0026] Also provided herein is the use of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
as defined herein, in the manufacture of a medicament for the
treatment of a RET-associated disease or disorder.
[0027] Also provided herein is a method for treating cancer in a
patient in need thereof, the method comprising (a) determining if
the cancer is associated with a dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same
(e.g., a RET-associated cancer); and (b) if the cancer is
determined to be associated with a dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same
(e.g., a RET-associated cancer), administering to the patient a
therapeutically effective amount of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof, or a
pharmaceutical composition thereof.
[0028] Also provided herein is a pharmaceutical combination for
treating cancer (e.g., a RET-associated cancer, such as a
RET-associated cancer having one or more RET inhibitor resistance
mutations) in a patient in need thereof, which comprises (a) a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, (b) an additional therapeutic agent, and (c)
optionally at least one pharmaceutically acceptable carrier,
wherein the compound of General Formula I or the pharmaceutically
acceptable salt or solvate thereof and the additional therapeutic
are formulated as separate compositions or dosages for
simultaneous, separate or sequential use for the treatment of
cancer, wherein the amounts of the compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof and of the
additional therapeutic agent are together effective in treating the
cancer. Also provided herein is a pharmaceutical composition
comprising such a combination. Also provided herein is the use of
such a combination for the preparation of a medicament for the
treatment of cancer. Also provided herein is a commercial package
or product comprising such a combination as a combined preparation
for simultaneous, separate or sequential use; and to a method of
treatment of cancer a patient in need thereof.
[0029] Also provided herein is a method for reversing or preventing
acquired resistance to an anticancer drug, comprising administering
a therapeutically effective amount of a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof, to a
patient at risk for developing or having acquired resistance to an
anticancer drug. In some embodiments, the patient is administered a
dose of the anticancer drug (e.g., at substantially the same time
as a dose of a compound of Formula I or a pharmaceutically
acceptable salt or solvate thereof is administered to the
patient).
[0030] Also provided herein is a method of delaying and/or
preventing development of cancer resistant to an anticancer drug in
an individual, comprising administering to the individual an
effective amount of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, before,
during, or after administration of an effective amount of the
anticancer drug.
[0031] Also provided herein is a method of treating an individual
with cancer who has an increased likelihood of developing
resistance to an anticancer drug, comprising concomitantly
administering to the individual (a) an effective amount of a
compound of General Formula I and (b) an effective amount of the
anticancer drug.
[0032] Also provided are methods of treating an individual with a
RET-associated cancer that has one or more RET inhibitor resistance
mutations that increase resistance of the cancer to a RET inhibitor
that is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof (e.g., a substitution at amino
acid position 804, e.g., V804M, V804L, or V804E), that include
administering a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, before, during, or after
administration of another anticancer drug (e.g., a RET kinase
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof).
[0033] Also provided are methods of treating an individual with a
RET-associated cancer that include administering a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, before, during, or after administration of another
anticancer drug (e.g., a RET kinase inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof).
[0034] Also provided herein is a method for treating irritable
bowel syndrome (IBS) in a patient in need thereof, the method
comprising (a) determining if the IBS is associated with a
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same; and (b) if the IBS is
determined to be associated with a dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same,
administering to the patient a therapeutically effective amount of
a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof, or a pharmaceutical composition
thereof.
[0035] Also provided herein is a pharmaceutical combination for
treating irritable bowel syndrome (IBS) in a patient in need
thereof, which comprises administering (a) a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
(b) an additional therapeutic agent, and (c) optionally at least
one pharmaceutically acceptable carrier, for simultaneous, separate
or sequential use for the treatment of IBS, wherein the amounts of
the compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof and of the additional therapeutic agent are
together effective in treating the IBS. Also provided herein is a
pharmaceutical composition comprising such a combination. Also
provided herein is the use of such a combination for the
preparation of a medicament for the treatment of the IBS. Also
provided herein is a commercial package or product comprising such
a combination as a combined preparation for simultaneous, separate
or sequential use; and to a method of treatment of the IBS a
patient in need thereof.
[0036] Also provided herein is a process for preparing a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof.
[0037] Also provided herein is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof obtained by a
process of preparing the compound as defined herein.
[0038] Unless otherwise defined, all technical and scientific terms
used herein have the same meaning as commonly understood by one of
ordinary skill in the art to which this invention belongs. Methods
and materials are described herein for use in the present
invention; other, suitable methods and materials known in the art
can also be used. The materials, methods, and examples are
illustrative only and not intended to be limiting. All
publications, patent applications, patents, sequences, database
entries, and other references mentioned herein are incorporated by
reference in their entirety. In case of conflict, the present
specification, including definitions, will control.
[0039] Other features and advantages of the invention will be
apparent from the following detailed description and FIGURES, and
from the claims.
DETAILED DESCRIPTION OF THE INVENTION
[0040] Provided herein is a compound of the General Formula I:
##STR00003##
[0041] or a pharmaceutically acceptable salt or solvate thereof,
wherein:
[0042] X.sup.1 is CH, CCH.sub.3, CF, CCl or N;
[0043] X.sup.2 is CH, CF or N;
[0044] X.sup.3 is CH, CF or N;
[0045] X.sup.4 is CH, CF or N;
[0046] wherein zero, one or two of X.sup.1, X.sup.2, X.sup.3 and
X.sup.4 is N;
[0047] A is H, Cl, CN, Br, CH.sub.3, CH.sub.2CH.sub.3 or
cyclopropyl;
[0048] B is hetAr.sup.1;
[0049] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-3 ring
heteroatoms independently selected from N, S and O, wherein the
heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, hydroxyC1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, cyanoC1-C6 alkyl, (C1-C6
alkoxy)C1-C6 alkyl, (C1-C4 alkoxy)CH.sub.2C(.dbd.O)--, (C1-C4
alkoxy)C(.dbd.O)C1-C3 alkyl, C3-C6 cycloalkyl,
(R.sup.aR.sup.bN)C1-C6 alkyl, (R.sup.aR.sup.bN)C(.dbd.O)C1-C6
alkyl, (C1-C6 alkylSO2)C1-C6 alkyl, hetCyc.sup.a and
4-methoxybenzyl;
[0050] R.sup.a and R.sup.b are independently H or C1-C6 alkyl;
[0051] hetCyc.sup.a is a 4-6 membered heterocyclic ring having a
ring heteroatom selected from N and O, wherein the heterocyclic
ring is optionally substituted with halogen, C1-C6 alkyl,
fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl,
(C1-C6 alkoxy)C1-C6 alkyl, di(C1-C3 alkyl)NCH.sub.2C(.dbd.O),
(C1-C6 alkoxy)C(.dbd.O) or (C1-C6 alkoxy)CH.sub.2C(.dbd.O);
[0052] D is hetCyc.sup.1, hetCyc.sup.2, hetCyc.sup.3 or
hetCyc.sup.9;
[0053] hetCyc.sup.1 is a 4-6 membered heterocyclic ring having 1-2
ring atoms selected from N and O, wherein the heterocyclic ring is
optionally substituted with one or more substituents independently
selected from the group consisting of C1-C3 alkyl, fluoroC1-C3
alkyl, difluoroC1-C3 alkyl, trifluoroC1-C3 alkyl and OH, or said
heterocyclic ring is substituted with a C3-C6 cycloalkylidene ring,
or said heterocyclic ring is substituted with an oxo group;
[0054] hetCyc.sup.2 is a 7-8 membered bridged heterocyclic ring
having 1-3 ring heteroatoms independently selected from N and O,
wherein the heterocyclic ring is optionally substituted with one or
more substituents independently selected from the group consisting
of C1-C3 alkyl;
[0055] hetCyc.sup.3 is a 7-11 membered heterospirocyclic ring
having 1-2 ring heteroatoms independently selected from N and O,
wherein the ring is optionally substituted with C1-C3 alkyl;
[0056] hetCyc.sup.9 is a fused 9-10 membered heterocyclic ring
having 1-3 ring nitrogen atoms and optionally substituted with
oxo;
[0057] E is
[0058] (a) hydrogen,
[0059] (b) OH,
[0060] (c) R.sup.aR.sup.bN--, wherein R.sup.a is H or C1-C6 alkyl
and R.sup.b is H, C1-C6 alkyl or phenyl;
[0061] (d) C1-C6 alkyl optionally substituted with one to three
fluoros,
[0062] (e) hydroxyC1-C6 alkyl- optionally substituted with one to
three fluoros,
[0063] (f) C1-C6 alkoxy optionally substituted with one to three
fluoros,
[0064] (g) hydroxy(C1-C6 alkoxy) optionally substituted with one to
three fluoros,
[0065] (h) (C1-C6 alkoxy)hydroxy C1-C6 alkyl- optionally
substituted with one to three fluoros,
[0066] (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted with one
to three fluoros,
[0067] (j) (hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally substituted
with one to three fluoros,
[0068] (k) (C1-C6 alkoxy)C(.dbd.O)--,
[0069] (l) (C1-C6 alkoxy)(C1-C6 alkyl)C(.dbd.O)--,
[0070] (m) HC(.dbd.O)--,
[0071] (n) Cyc.sup.1,
[0072] (o) Cyc.sup.1C(.dbd.O)--,
[0073] (p) Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or more groups
independently selected from the group consisting of OH, fluoro,
C1-C3 alkoxy and R.sup.cR.sup.dN--, where R.sup.c and R.sup.d are
independently H or C1-C6 alkyl,
[0074] (q) hetCyc.sup.4,
[0075] (r) hetCyc.sup.4C(.dbd.O)--,
[0076] (s) hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--,
[0077] (t) (hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl-,
[0078] (u) hetCyc.sup.4C(.dbd.O)NH--,
[0079] (v) Ar.sup.2,
[0080] (w) Ar.sup.2C(.dbd.O)--,
[0081] (x) Ar.sup.2C1-C6 alkyl-,
[0082] (y) (Ar.sup.2)hydroxy C2-C6 alkyl-,
[0083] (z) Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), hydroxyC1-C6 alkyl,
C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are
independently H or C1-C6 alkyl, or R.sup.e and R.sup.f together
with the nitrogen to which they are attached form a 5-6 membered
azacyclic ring optionally having an additional ring heteroatom
selected from N and O,
[0084] (aa) hetAr.sup.2C(.dbd.O)--,
[0085] (bb) (hetAr.sup.2)hydroxyC2-C6 alkyl-,
[0086] (cc) hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6
alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--,
where R.sup.e and R.sup.f are independently H or C1-C6 alkyl, or
R.sup.e and R.sup.f together with the nitrogen to which they are
attached form a 5-6 membered azacyclic ring optionally having an
additional ring heteroatom selected from N and O,
[0087] (dd) R.sup.1R.sup.2NC(.dbd.O)--,
[0088] (ee) R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein the
alkyl portion is optionally substituted with phenyl,
[0089] (ff) R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl-,
[0090] (gg) R.sup.1R.sup.2NC(.dbd.O)NH--,
[0091] (hh) CH.sub.3SO.sub.2(C1-C6 alkyl)C(.dbd.O)--,
[0092] (ii) (C1-C6 alkyl)SO.sub.2--,
[0093] (jj) (C3-C6 cycloalkyl)CH.sub.2SO.sub.2--,
[0094] (kk) hetCyc.sup.5-SO.sub.2--,
[0095] (ll) R.sup.4R.sup.5NSO.sub.2--,
[0096] (mm) R.sup.6C(.dbd.O)NH--,
[0097] (nn) hetCyc.sup.6;
[0098] (oo) hetAr.sup.2C1-C6 alkyl-,
[0099] (pp) (hetCyc.sup.4)C1-C6 alkyl-,
[0100] (qq) (C1-C6 alkoxy)C1-C6 alkyl- wherein said alkoxy portion
is optionally substituted with 1-3 fluoros,
[0101] (rr) (C3-C6 cycloalkoxy)C1-C6 alkyl-,
[0102] (ss) (C3-C6 cycloalkyl)C1-C6 alkyl- wherein said cycloalkyl
is optionally substituted with 1-2 fluoros,
[0103] (tt) (R.sup.gR.sup.hN)C1-C6 alkyl- wherein R.sup.g and
R.sup.h are independently H or C1-C6 alkyl,
[0104] (uu) Ar.sup.2--O--,
[0105] (vv) (C1-C6 alkylSO2)C1-C6 alkyl-,
[0106] (ww) (C1-C6 alkoxy)C(.dbd.O)NHC1-C6 alkyl-,
[0107] (xx) (C3-C6 cycloalkoxy)C(.dbd.O)--,
[0108] (yy) (C3-C6 cycloalkyl)SO.sub.2-- wherein said cycloalkyl is
optionally substituted with C1-C6 alkyl,
[0109] (zz) Ar.sup.4CH.sub.2OC(.dbd.O)--,
[0110] (aaa) (N--(C1-C3 alkyl)pyridinonyl)C1-C3 alkyl-, and
[0111] (bbb) (Ar.sup.4SO.sub.2)C1-C6 alkyl-;
[0112] Cyc.sup.1 is a C3-C6 cycloalkyl, wherein (a) the cycloalkyl
is optionally substituted with one or more substituents
independently selected from the group consisting of OH, halogen,
C1-C6 alkoxy, CN, hydroxyC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl,
and C1-C6 alkyl optionally substituted with 1-3 fluoros, or (b) the
cycloalkyl is substituted with phenyl, wherein the phenyl is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C3 alkyl, C1-C3
alkoxy and CF, or (c) the cycloalkyl is substituted with a 5-6
membered heteroaryl ring having 1-3 ring heteroatoms independently
selected from N and O, wherein the heteroaryl ring is optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, C1-C3 alkyl, C1-C3 alkoxy and
CF.sub.3;
[0113] Ar.sup.2 is phenyl optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, C1-C6 alkoxy (optionally substituted with 1-3
fluoros), fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl, CN, a 5-6 membered heterocyclic ring having 1-2 ring
heteroatoms independently selected from N and O, and
R.sup.iR.sup.jN-- where R.sup.i and R.sup.j are independently H and
C1-C6 alkyl;
[0114] hetAr.sup.2 is a 5-6 membered heteroaryl ring having 1-3
ring heteroatoms independently selected from N, O and S and
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C6 alkyl, C1-C6
alkoxy (optionally substituted with 1-3 fluoros), fluoroC1-C6
alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, hydroxyC1-C6
alkyl, (C3-C6)cycloalkyl, (C1-C6 alkoxy)C1-C6 alkyl, CN and
R'R''N-- where R' and R'' are independently H or C1-C3 alkyl;
[0115] hetCyc.sup.4 is (a) a 4-6 membered heterocyclic ring having
1-2 ring heteroatoms independently selected from N, O and S wherein
said S is optionally oxidized to SO.sub.2, (b) a 7-8 membered
bridged heterocyclic ring having 1-2 ring heteroatoms independently
selected from N and O, (c) a 6-12 membered fused bicyclic
heterocyclic ring having 1-2 ring heteroatoms independently
selected from N and O and optionally independently substituted with
1-2 C1-C6 alkyl subsitutents, or (d) a 7-10 membered spirocyclic
heterocyclic ring having 1-2 ring heteroatoms independently
selected from N and O, wherein each of the heterocyclic rings is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy, (C1-C6
alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, (C1-C6 alkyl)C(.dbd.O)--, a
5-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and phenyl wherein said phenyl
is optionally substituted with one or more substituents selected
from halogen, C1-C6 alkyl and C1-C6 alkoxy;
[0116] hetCyc.sup.5 is a 5-6 membered heterocyclic ring having a
ring heteroatom selected from O and N;
[0117] hetCyc.sup.6 is a 5 membered heterocyclic ring having one or
two ring heteroatoms independently selected from N and O, wherein
the ring substituted with oxo and wherein the ring is further
optionally substituted with one or more substituents independently
selected from the group consisting of OH and C1-C6 alkyl;
[0118] R.sup.1 is H, C1-C6 alkyl or (C1-C6 alkoxy)C1-C6 alkyl;
[0119] R.sup.2 is H, C1-C6 alkyl (optionally substituted with 1-3
fluoros), (C1-C6 alkoxy)C1-C6 alkyl (optionally substituted with
1-3 fluoros), Cyc.sup.3, hydroxyC1-C6 alkyl (optionally substituted
with 1-3 fluoros), C1-C6 alkoxy (optionally substituted with 1-3
fluoros), (C1-C6 alkoxy)C(.dbd.O), hetCyc.sup.7, Ar.sup.3,
Ar.sup.3C1-C3 alkyl-, hydroxyC1-C6 alkoxy or (C3-C6
cycloalkyl)CH.sub.2O--;
[0120] Cyc.sup.3 is a 3-6 membered carbocyclic ring optionally
substituted with 1-2 groups independently selected from the group
consisting of C1-C6 alkoxy, OH and halogen;
[0121] hetCyc.sup.7 is a 5-6 membered heterocyclic ring having a
ring heteroatom selected from O and N wherein the ring is
optionally substituted with C1-C6 alkyl;
[0122] Ar.sup.3 is phenyl optionally substituted with one or more
substituents independently selected from halogen, C1-C3 alkyl,
C1-C3 alkoxy, fluoroC1-C3 alkyl, difluoroC1-C3 alkyl and
trifluoroC1-C3 alkyl;
[0123] R.sup.4 and R.sup.5 are independently H or C1-C6 alkyl;
[0124] R.sup.6 is C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy,
(C1-C6 alkoxy)C1-C6 alkyl, phenyl or hetCyc.sup.8;
[0125] hetCyc.sup.8 is a 5-6 membered heterocyclic ring having a
ring heteroatom selected from O and N, wherein the heterocyclic
ring is optionally substituted with C1-C6 alkyl; and
[0126] Ar.sup.4 is phenyl optionally substituted with one or more
halogens.
[0127] As used herein, the word "a" before a noun represents one or
more of the particular noun. For example, the phrase "a cell"
represents "one or more cells."
[0128] For complex chemical names employed herein, a substituent
group is typically named before the group to which it attaches. For
example, methoxyethyl group comprises an ethyl backbone with a
methoxy substituent.
[0129] The term "halogen" means --F (sometimes referred to herein
as "fluoro" or "fluoros"), --Cl, --Br and --I.
[0130] The term "azacyclic ring" as used herein refers to a
saturated heterocyclic ring having a ring nitrogen atom.
[0131] The terms "C1-C3 alkyl" and "C1-C6 alkyl" as used herein
refer to saturated linear or branched-chain monovalent hydrocarbon
radicals of one to three or one to six carbon atoms, respectively.
Examples include, but are not limited to, methyl, ethyl, 1-propyl,
isopropyl, 1-butyl, isobutyl, sec-butyl, tert-butyl,
2-methyl-2-propyl, pentyl, and hexyl.
[0132] The terms "C1-C3 alkoxy", "C1-C4 alkoxy" and "C1-C6 alkoxy",
as used herein refer to saturated linear or branched-chain
monovalent alkoxy radicals of one to three, one to four or one to
six carbon atoms, respectively, wherein the radical is on the
oxygen atom. Examples include methoxy, ethoxy, propoxy, isopropoxy,
and butoxy.
[0133] The term "fluoroC1-C6 alkyl" as use herein refers to
saturated linear or branched-chain monovalent radicals of one to
six carbon atoms, wherein one of the hydrogen atoms is replaced by
fluorine. Examples include fluoromethyl, 3-fluoropropyl and
2-fluoroethyl.
[0134] The term "difluoroC1-C6 alkyl" as use herein refers to
saturated linear or branched-chain monovalent radicals of one to
six carbon atoms, wherein two of the hydrogen atoms are replaced by
fluorine. Examples include difluoromethyl, 2,2-difluoroethyl, and
1,3-difluoroprop-2-yl,
[0135] The term "trifluoroC1-C6 alkyl" as used herein refers to
saturated linear or branched-chain monovalent radicals of one to
six carbon atoms, wherein three of the hydrogen atoms are replaced
by fluorine. Examples include trifluoromethyl,
2,2,2-trifluoroethyl, and 3,3,3-trifluoropropyl.
[0136] The term "(C1-C6 alkoxy)C1-C6 alkyl" as used herein refers
to saturated linear or branched-chain monovalent radicals of one to
six carbon atoms, wherein one of the carbon atoms is substituted
with a (C1-C6 alkoxy) group as defined herein. Examples include
methoxymethyl (CH.sub.3OCH.sub.2--) and methoxyethyl
(CH.sub.3OCH.sub.2CH.sub.2--).
[0137] The term "hydroxyC1-C6 alkyl" as used herein refers to
saturated linear or branched-chain monovalent alkyl radicals of one
to six carbon atoms, wherein one of the carbon atoms is substituted
with a hydroxy group.
[0138] The term "hydroxyC1-C6 alkoxy" as used herein refers to
saturated linear or branched-chain monovalent alkoxy radicals of
one to six carbon atoms, wherein one of the carbon atoms is
substituted with a hydroxy group.
[0139] The term "(C1-C6 alkoxy)hydroxyC1-C6 alkyl" as used herein
refers to a hydroxy (C1-C6 alkyl) radical as defined herein,
wherein one of the carbon atoms is substituted with a C1-C6 alkoxy
group as defined herein.
[0140] The term "Cyc.sup.1(C1-C6 alkyl)" as used herein refers to
saturated linear or branched-chain monovalent alkyl radicals of one
to six carbon atoms, wherein one of the carbon atoms is substituted
with a 3-6 membered cycloalkyl ring.
[0141] The term "Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)--" as used herein
refers to a (C1-C6 alkyl)C(.dbd.O)-- group, wherein the C1-C6 alkyl
is a saturated linear or branched-chain monovalent radical of one
to six carbon atoms and wherein one of the carbon atoms of the
C1-C6 alkyl portion is substituted with a C3-C6 cycloalkyl
group.
[0142] The term "Ar.sup.2C1-C6 alkyl" as used herein refers to
C1-C6 alkyl radical as defined herein one of the carbon atoms of
the alkyl portion is substituted with Ar.sup.2.
[0143] The term "(Ar.sup.2)hydroxy C2-C6 alkyl" as used herein
refers to a hydroxyC1-C6 alkyl radical as defined herein wherein
one of the carbon atoms of the alkyl portion is substituted with
Ar.sup.2.
[0144] The term "Ar.sup.2(C1-C3 alkyl)C(.dbd.O)--" as used herein
refers to a C1-C3 alkyl(C.dbd.O)-- radical wherein the C1-C3 alkyl
portion is a saturated linear or branched-chain monovalent alkyl
radicals of one to three carbon atoms, wherein one of the carbon
atoms is substituted with Ar.sup.2.
[0145] The term "(hetAr.sup.2)hydroxy C2-C6 alkyl" as used herein
refers to a hydroxyC1-C6 alkyl radical as defined herein wherein
one of the carbon atoms is substituted with hetAr.sup.2.
[0146] The term "hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)--" as used
herein refers to a C1-C3 alkyl(C.dbd.O)-- radical wherein the C1-C3
alkyl portion is a saturated linear or branched-chain monovalent
alkyl radical of one to three carbon atoms, wherein one of the
carbon atoms is substituted with hetAr.sup.2.
[0147] The term "R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl" as used
herein refers to a C1-C2 alkyl radical wherein one of the carbon
atoms is substituted with a R.sup.1R.sup.2NC(.dbd.O)-- group.
[0148] The term "R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)--" as used
herein refers to a C1-C3 alkyl(C.dbd.O)-- radical wherein the C1-C3
alkyl portion is a saturated linear or branched-chain monovalent
alkyl radicals of one to three carbon atoms, wherein one of the
carbon atoms is substituted with a R.sup.1R.sup.2N-- group, wherein
R.sup.1 and R.sup.2 are as defined for General Formula I.
[0149] The term "(C1-C6 alkylSO2)C1-C6 alkyl" as used herein as
used herein refers to saturated linear or branched-chain monovalent
radicals of one to six carbon atoms, wherein one of the carbon
atoms is substituted with a (C1-C6 alkyl)SO.sub.2-- group (e.g., a
(CH.sub.3).sub.2CH.sub.2SO.sub.2-- group).
[0150] The term "(Ar.sup.4SO.sub.2)C1-C6 alkyl" as used herein as
used herein refers to saturated linear or branched-chain monovalent
radicals of one to six carbon atoms, wherein one of the carbon
atoms is substituted with a (Ar.sup.4)SO.sub.2-- group.
[0151] The term "bridged heterocyclic ring" as used herein refers
to a bicyclic heterocycle, wherein two common nonadjacent carbon
atoms of the ring are linked by an alkylene bridge of 1, 2, 3, or 4
carbon atoms. Examples of bridged heterocyclic ring systems include
3,6-diazabicyclo[3.1.1]heptane, 2,5-diazabicyclo[2.2.1]heptane,
3,8-diazabicyclo[3.2.1]octane, 3,8-diazabicyclo[3.2.1]octane,
8-azabicyclo[3.2.1]octane and 7-azabicyclo[2.2.1]heptane.
[0152] The term "spirocyclic ring" as used herein refers to a group
having two rings joined by a spirocyclic linkage through a common
single carbon atom, wherein each ring is a 4-7-membered ring
(including the common carbon atom).
[0153] The term "heterospirocyclic" as used herein refers to a
group having two rings joined by a spirocyclic linkage through a
carbon atom, wherein each ring has 4 to 6 ring atoms (with one ring
atom being common to both rings), and wherein 1 or 2 of the ring
atoms is a heteroatom selected from the group consisting of N and
O, provided that the heteroatoms are not adjacent. Examples include
2,6-diazaspiro[3.3]heptane, 2,5-diazaspiro[3.4]octane,
2,6-diazaspiro[3.4]octane, 6-oxa-2-azaspiro[3.4]octane,
2-oxa-7-azaspiro[4.4]nonane, 7-oxa-2-azaspiro[4.5]decane,
7-oxa-2-azaspiro[3.5]nonane, 2,7-diazaspiro[3.5]nonane,
2,6-diazaspiro[3.5]nonane, 2,5-diazaspiro[3.5]nonane,
1,6-diazaspiro[3.4]octane, 1,7-diazaspiro[4.4]nonane,
2,7-diazaspiro[4.4]nonane, 2,8-diazaspiro[4.5]decane,
2,7-diazaspiro[4.5]decane, 2,6-diazaspiro[4.5]decane,
1,7-diazaspiro[3.5]nonane, 2,7-diazaspiro[3.5]nonane,
1,6-diazaspiro[3.5]nonane, 1,8-diazaspiro[4.5]decane,
2,8-diazaspiro[4.5]decane, 2,7-diazaspiro[4.5]decane,
1,7-diazaspiro[4.5]decane, 2,9-diazaspiro[5.5]undecane, and
7-azaspiro[3.5]nonane.
[0154] As used herein, the term "cycloalkylidine ring" refers to a
divalent carbocyclic ring. The suffix "ylidine" refers to bivalent
radical derived from a saturated hydrocarbon by removal of two
hydrogen atoms from the same carbon atom.
[0155] The term "compound," as used herein is meant to include all
stereoisomers, geometric isomers, tautomers, and isotopes of the
structures depicted. Compounds herein identified by name or
structure as one particular tautomeric form are intended to include
other tautomeric forms unless otherwise specified.
[0156] The term "tautomer" as used herein refers to compounds whose
structures differ markedly in arrangement of atoms, but which exist
in easy and rapid equilibrium, and it is to be understood that
compounds provided herein may be depicted as different tautomers,
and when compounds have tautomeric forms, all tautomeric forms are
intended to be within the scope of the invention, and the naming of
the compounds does not exclude any tautomer.
[0157] The term "oxo" as used herein means an oxygen that is double
bonded to a carbon atom. For example, a non-limiting example of a
heterocyclic ring that is substituted with an oxo group is the
structure:
##STR00004##
[0158] The term "(N--(C1-C3 alkyl)pyridinonyl)C1-C3 alkyl" as used
herein refers to a C1-C3 alkyl radical as defined herein where one
of the carbon atoms of the alkyl portion is substituted with a
2-oxo-1,2-dihydropyridine that is substituted on the pyridone
nitrogen with 1-3 carbons. Examples include
1-methyl-1,2-dihydropyridin-2-one.
[0159] In certain embodiments of Formula I, X.sup.1 is CH,
CCH.sub.3, CF, or CCl, X.sup.2 is CH or CF, X.sup.3 is CH or CF,
and X.sup.4 is CH or CF. In certain embodiments, each of X.sup.1,
X.sup.2, X.sup.3 and X.sup.4 is CH.
[0160] In certain embodiments of Formula I, X.sup.1 is CH,
CCH.sub.3, CF, CCl or N, X.sup.2 is CH, CF or N, X.sup.3 is CH, CF
or N, and X.sup.4 is CH, CF or N, wherein one of X.sup.1, X.sup.2,
X.sup.3 and X.sup.4 is N.
[0161] In certain embodiments of Formula I, X.sup.1 is N, X.sup.2
is CH or CF, X.sup.3 is CH or CF, and X.sup.4 is CH or CF. In
certain embodiments, X.sup.1 is N, and X.sup.2, X.sup.3 and X.sup.4
are CH.
[0162] In certain embodiments of Formula I, X.sup.1 is CCH.sub.3,
X.sup.2 is CH, CF or N; X.sup.3 is CH, CF or N, and X.sup.4 is CH,
CF or N; wherein one of X.sup.2, X.sup.3 and X.sup.4 is N. In
certain embodiments, X.sup.1 is CCH.sub.3, X.sup.2 is N; X.sup.3 is
CH or CF, and X.sup.4 is CH or CF. In certain embodiments, X.sup.1
is CCH.sub.3, X.sup.2 is N, and X.sup.3 and X.sup.4 are CH.
[0163] In certain embodiments of Formula I, X.sup.1 is CH,
CCH.sub.3, CF, CCl or N; X.sup.2 is CH, CF or N; X.sup.3 is CH, CF
or N; and X.sup.4 is CH, CF or N, wherein two of X.sup.1, X.sup.2,
X.sup.3 and X.sup.4 are N.
[0164] In certain embodiments of Formula I, X.sup.1 and X.sup.2 are
N, and X.sup.3 and X.sup.4 are CH or CF. In certain embodiments,
X.sup.1 and X.sup.2 are N, and X.sup.3 and X.sup.4 are CH.
[0165] In certain embodiments, X.sup.1 and X.sup.3 are N, and
X.sup.2 and X.sup.4 are CH or CF. In certain embodiments, X.sup.1
and X.sup.3 are N, and X.sup.2 and X.sup.4 are CH.
[0166] In certain embodiments, A is H, Cl, CN, Br, CH.sub.3, or
CH.sub.2CH.sub.3.
[0167] In certain embodiments, A is H.
[0168] In certain embodiments, A is Cl.
[0169] In certain embodiments, A is CN.
[0170] In certain embodiments, A is Br.
[0171] In certain embodiments, A is CH.sub.3.
[0172] In certain embodiments, A is CH.sub.3CH.sub.2--.
[0173] In certain embodiments, A is cyclopropyl.
[0174] In certain embodiments, B is hetAr.sup.1 where hetAr.sup.1
is a 5-membered heteroaryl ring having 1-3 ring heteroatoms
independently selected from N, S and O, wherein the heteroaryl ring
is optionally substituted with one or more substituents
independently selected from the group consisting of halogen, C1-C6
alkyl, hydroxyC1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl,
trifluoroC1-C6 alkyl, cyanoC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl,
(C1-C4 alkoxy)CH.sub.2C(.dbd.O)--, (C1-C4 alkoxy)C(.dbd.O)C1-C3
alkyl, C3-C6 cycloalkyl, (R.sup.aR.sup.bN)C1-C6 alkyl,
(R.sup.aR.sup.bN)C(.dbd.)C1-C6 alkyl, (C1-C6 alkylSO2)C1-C6 alkyl,
hetCyc.sup.a and 4-methylbenzyl.
[0175] In certain embodiments, B is hetA.sup.r where hetA.sup.r is
a 5-membered heteroaryl ring having 1-3 ring heteroatoms
independently selected from N, S and O, wherein the heteroaryl ring
is optionally substituted with one or more substituents
independently selected from the group consisting of C1-C6 alkyl
fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and
hydroxyC1-C6 alkyl.
[0176] In certain embodiments, hetA.sup.r is pyrazolyl, imidazolyl,
oxazolyl, isoxazolyl thiazolyl, thiadiazolyl, triazolyl or
oxadiazolyl optionally substituted with one or more substituents
independently selected from the group consisting of halogen, C1-C6
alkyl, hydroxyC1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl,
trifluoroC1-C6 alkyl, cyanoC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl,
(C1-C4 alkoxy)CH.sub.2C(.dbd.O)--, (C1-C4 alkoxy)C(.dbd.O)C1-C3
alkyl, C3-C6 cycloalkyl, (R.sup.aR.sup.bN)C1-C6 alkyl,
(R.sup.aR.sup.bN)C(.dbd.O)C1-C6 alkyl, (C1-C6 alkylSO2)C1-C6 alkyl,
hetCyc.sup.a and 4-methoxybenzyl.
[0177] In certain embodiments, B is pyrazolyl, imidazolyl, oxazolyl
or isoxazolyl optionally substituted with one or more substituents
independently selected from C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, hydroxyC1-C6 alkyl,
C3-C6 cycloalkyl, hetCyc.sup.a and 4-methoxybenzyl.
[0178] In certain embodiments, B is pyrazolyl or imidazolyl
optionally substituted with one or more substituents independently
selected from C1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl,
trifluoroC1-C6 alkyl and hydroxyC1-C6 alkyl.
[0179] In certain embodiments, B is pyrazolyl optionally
substituted with one or more substituents independently selected
from C1-C6 alkyl.
[0180] Non-limiting examples of hetAr.sup.1 include the
structures:
##STR00005## ##STR00006## ##STR00007##
[0181] In certain embodiments, D is hetCyc.sup.1 where hetCyc.sup.1
is a 4-6 membered heterocyclic ring having 1-2 ring atoms selected
from N and O, wherein the heterocyclic ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C3 alkyl, fluoroC1-C3 alkyl,
difluoroC1-C3 alkyl, trifluoroC1-C3 alkyl and OH, or the
heterocyclic ring is substituted with a C3-C6 cycloalkylidene ring,
or said heterocyclic ring is substituted with an oxo group.
[0182] In certain embodiments, hetCyc.sup.1 is a pyrrolidinyl,
piperidinyl, piperazinyl, morpholinyl or azetidinyl ring optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C3 alkyl, fluoroC1-C3 alkyl,
difluoroC1-C3 alkyl, trifluoroC1-C3 alkyl and OH, or hetCyc.sup.1
is a piperazinyl ring substituted with a C3-C6 cycloalkylidene
ring, or hetCyc.sup.1 is a piperazinyl ring substituted with an oxo
group.
[0183] In certain embodiments, hetCyc.sup.1 is a pyrrolidinyl,
piperidinyl, piperazinyl, morpholinyl, or azetidinyl ring
optionally substituted with a group selected from C1-C3 alkyl and
trifluoroC1-C3 alkyl, or the hetCyc.sup.1 is substituted with a
C3-C6 cycloalkylidene ring, or hetCyc.sup.1 is piperazin-2-onyl. In
certain embodiments, hetCyc.sup.1 is a pyrrolidinyl, piperidinyl,
piperazinyl or morpholinyl ring optionally substituted with a group
selected from C1-C3 alkyl and trifluoroC1-C3 alkyl, or the
hetCyc.sup.1 is substituted with a C3-C6 cycloalkylidene ring.
[0184] In certain embodiments, hetCyc.sup.1 is piperidinyl or
piperazinyl.
[0185] In certain embodiments, hetCyc.sup.1 is piperazinyl.
[0186] Non-limiting examples of D when represented by hetCyc.sup.1
include the structures:
##STR00008##
[0187] where the asterisk indicates the point of attachment to the
E group.
[0188] In one embodiment of the D-E group, D is hetCyc.sup.1 and E
is hydrogen. Non-limiting examples include the structures:
##STR00009##
[0189] In one embodiment, D is hetCyc.sup.1 and E is OH. In one
embodiment, hetCyc.sup.1 is a 5-6 membered heterocyclic ring having
a ring nitrogen atom, wherein the ring is optionally substituted
with trifluorol-C3 alkyl. Non-limiting examples include the
structures:
##STR00010##
[0190] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.aR.sup.bN-- where R.sup.a is H or C1-C6 alkyl and R.sup.b is
H, C1-C6 alkyl or phenyl. In one embodiment, hetCyc.sup.1 is a 6
membered heterocyclic ring having a ring nitrogen atom, wherein the
ring is optionally substituted with C1-C3 alkyl. Non-limiting
examples include the structures:
##STR00011##
[0191] In one embodiment of the D-E group, D is hetCyc.sup.1 and E
is C1-C6 alkyl optionally substituted with one to three fluoros.
Non-limiting examples include the structures:
##STR00012##
[0192] In one embodiment, D is hetCyc.sup.1 and E is hydroxyC1-C6
alkyl optionally substituted with one to three fluoros.
Non-limiting examples include the structures:
##STR00013##
[0193] In one embodiment, D is hetCyc.sup.1 and E is C1-C6 alkoxy
optionally substituted with one to three fluoros. Non-limiting
examples include the structures:
##STR00014##
[0194] In one embodiment, D is hetCyc.sup.1 and E is hydroxy(C1-C6
alkoxy) optionally substituted with one to three fluoros. A
non-limiting examples include the structure:
##STR00015##
[0195] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkoxy)hydroxy C1-C6 alkyl optionally substituted with one to three
fluoros. A non-limiting example includes the structure:
##STR00016##
[0196] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros.
In one embodiment, hetCyc.sup.1 is a 6-membered heterocyclic ring
having 1-2 ring nitrogen atoms, wherein the heterocyclic ring is
optionally substituted with cyclopropyl. Non-limiting examples
include the structures:
##STR00017##
[0197] In one embodiment, D is hetCyc.sup.1 and E is (hydroxy C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros.
In one embodiment, hetCyc.sup.1 is a 6-membered heterocyclic ring
having a ring nitrogen atom, wherein the heterocyclic ring is
optionally substituted with cyclopropyl. Non-limiting examples
include the structures:
##STR00018##
[0198] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkoxy)C(.dbd.O)--. In one embodiment, hetCyc.sup.1 is a 6-membered
heterocyclic ring having 1-2 ring nitrogen atoms, wherein the
heterocyclic ring is optionally substituted with cyclopropyl or
C1-C3 alkyl. Non-limiting examples include the structures:
##STR00019##
[0199] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkoxy)(C1-C6 alkyl)C(.dbd.O)--. Non-limiting examples include the
structures:
##STR00020##
[0200] In one embodiment, D is hetCyc.sup.1 and E is HC(.dbd.O)--.
A non-limiting example is the structure:
##STR00021##
[0201] In one embodiment, D is hetCyc.sup.1 and E is Cyc.sup.1,
Cyc.sup.1C(.dbd.O)--, or Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)--, wherein
in each instance, Cyc.sup.1 is a C3-C6 cycloalkyl, wherein (a)
Cyc.sup.1 is optionally substituted with one or more substituents
independently selected from the group consisting of OH, halogen,
C1-C6 alkoxy, CN, hydroxyC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl,
and C1-C6 alkyl optionally substituted with 1-3 fluoros, or (b)
Cyc.sup.1 is substituted with phenyl, wherein the phenyl is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C3 alkyl, C1-C3
alkoxy and CF, or (c) Cyc.sup.1 is substituted with a 5-6 membered
heteroaryl ring having 1-3 ring heteroatoms independently selected
from N and O, wherein the heteroaryl ring is optionally substituted
with one or more substituents independently selected from the group
consisting of halogen, C1-C3 alkyl, C1-C3 alkoxy and CF.sub.3.
[0202] In one embodiment, D is hetCyc.sup.1 and E is Cyc.sup.1,
where Cyc.sup.1 is a C3-C6 cycloalkyl, wherein the cycloalkyl is
optionally substituted with one or more substituents independently
selected from the group consisting of OH, halogen, C1-C6 alkoxy,
CN, hydroxyC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl, and C1-C6 alkyl
optionally substituted with 1-3 fluoros. In one embodiment,
Cyc.sup.1 is a C3-C6 cycloalkyl optionally substituted with OH.
Non-limiting examples when D is hetCyc.sup.1 and E is Cyc.sup.1
include the structures:
##STR00022##
[0203] In one embodiment, D is hetCyc.sup.1 and E is
Cyc.sup.1C(.dbd.O)-- where Cyc.sup.1 is as defined for General
Formula I. In one embodiment, Cyc.sup.1 is a C3-C6 cycloalkyl,
wherein the cycloalkyl is optionally substituted with one or more
substituents independently selected from the group consisting of OH
or halogen. In one embodiment, the cycloalkyl is substituted with
phenyl. Non-limiting examples when D is hetCyc.sup.1 and E is
Cyc.sup.1C(.dbd.O)-- include the structures:
##STR00023## ##STR00024## ##STR00025##
[0204] In one embodiment, D is hetCyc.sup.1 and E is
Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or more groups independently
selected from the group consisting of OH, fluoro, C1-C3 alkoxy and
R.sup.cR.sup.dN-- where R.sup.c and R.sup.d are independently H or
C1-C6 alkyl. In one embodiment, Cyc.sup.1 is a C3-C6 cycloalkyl
optionally substituted with one or more substituents independently
selected from the group consisting of OH, halogen, C1-C6 alkoxy,
CN, hydroxyC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl, and C1-C6 alkyl
optionally substituted with 1-3 fluoros. In one embodiment, the
alkyl portion of Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- is
unsubstituted. In one embodiment, Cyc.sup.1 is unsubstituted. A
non-limiting example when D is hetCyc.sup.1 and E is
Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- is the structure:
##STR00026##
[0205] In one embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.4,
hetCyc.sup.4C(.dbd.O)--, hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--,
(hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl, or hetCyc.sup.4C(.dbd.O)NH--,
wherein in each instance, hetCyc.sup.4 is as defined for General
Formula I.
[0206] In one embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.4,
hetCyc.sup.4C(.dbd.O)--, hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--,
(hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl, or hetCyc.sup.4C(.dbd.O)NH--,
wherein in each instance hetCyc.sup.4 is (a) a 5-6 membered
heterocyclic ring, (b) a 7-8 membered bridged heterocyclic ring,
(c) a 8-12 membered fused bicyclic heterocyclic ring, or (d) a 7-10
membered spirocyclic heterocyclic ring, wherein each of the
heterocyclic rings has 1-2 ring heteroatoms independently selected
from N and O, and wherein each of the heterocyclic rings is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy and (C1-C6
alkoxy)C1-C6 alkyl.
[0207] In one embodiment, hetCyc.sup.4 is tetrahydrofuranyl,
pyrrolidinyl, piperidinyl, morpholinyl or tetrahydro-2H-thiopyranyl
1,1-dioxide optionally substituted with one or more substituents
independently selected from the group consisting of halogen, OH,
CN, C1-C6 alkyl (optionally substituted with 1-3 fluoros), C1-C6
alkoxy and (C1-C6 alkoxy)C1-C6 alkyl.
[0208] In one embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.4,
where hetCyc.sup.4 is as defined for General Formula I. In one
embodiment, hetCyc.sup.4 is a 4-6 membered heterocyclic ring having
1-2 ring heteroatoms independently selected from N, O and S wherein
the S is optionally oxidized to SO.sub.2, and wherein the
heterocyclic ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, OH, CN, C1-C6 alkyl (optionally substituted with 1-3
fluoros), C1-C6 alkoxy and (C1-C6 alkoxy)C1-C6 alkyl.
[0209] In one embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.4,
wherein hetCyc.sup.4 is a 4-6 membered heterocyclic ring having 1-2
ring heteroatoms independently selected from N, O, and S wherein
the S is optionally oxidized to SO.sub.2 and wherein the
heterocyclic ring is optionally substituted with OH or C1-C6
alkoxy.
[0210] In one embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.4,
wherein hetCyc.sup.4 is a 4-6 membered heterocyclic ring having a
ring heteroatom selected from O and S wherein the S is optionally
oxidized to SO.sub.2, and wherein the heterocyclic ring is
optionally substituted with OH or C1-C6 alkoxy.
[0211] Non-limiting examples when D is hetCyc.sup.1 and E is
hetCyc.sup.4 include the structures:
##STR00027##
[0212] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4 is as defined for
General Formula I. In one embodiment, hetCyc.sup.4 is (a) a 4-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N, O and S wherein said S is optionally
oxidized to SO.sub.2, (b) a 7-8 membered bridged heterocyclic ring
having 1-2 ring heteroatoms independently selected from N and O,
(c) a 6-12 membered fused bicyclic heterocyclic ring having 1-2
ring heteroatoms independently selected from N and O and optionally
independently substituted with 1-2 C1-C6 alkyl subsitutents, or (d)
a 7-10 membered spirocyclic heterocyclic ring having 1-2 ring
heteroatoms independently selected from N and O, wherein each of
said heterocyclic rings is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, OH, CN, C1-C6 alkyl (optionally substituted with 1-3
fluoros), C1-C6 alkoxy, (C1-C6 alkoxy)C1-C6 alkyl,
(C3-C6)cycloalkyl, (C1-C6 alkyl)C(.dbd.O)--, a 5-6 membered
heterocyclic ring having 1-2 ring heteroatoms independently
selected from N and O, and phenyl.
[0213] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4 is (a) a 5-6 membered
heterocyclic ring, (b) a 7-8 membered bridged heterocyclic ring,
(c) a 6-12 membered fused bicyclic heterocyclic ring, or (d) a 7-10
membered spirocyclic heterocyclic ring, wherein each of the
heterocyclic rings has 1-2 ring heteroatoms independently selected
from N and O, and wherein each of the heterocyclic rings is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy and (C1-C6
alkoxy)C1-C6 alkyl.
[0214] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4 is (a) a 4-6 membered
heterocyclic ring, (b) a 7-8 membered bridged heterocyclic ring,
(c) a 6-12 membered fused bicyclic heterocyclic ring, or (d) a 7-10
membered spirocyclic heterocyclic ring, wherein each of the
heterocyclic rings has 1-2 ring heteroatoms independently selected
from N and O, and wherein each of the heterocyclic rings is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy, (C1-C6
alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, a 5-6 membered heterocyclic
ring having 1-2 ring heteroatoms independently selected from N and
O, and phenyl wherein said phenyl is optionally substituted with
one or more substituents selected from halogen, C1-C6 alkyl and
C1-C6 alkoxy.
[0215] In one embodiment, D is pyrrolidinyl, piperidinyl or
piperazinyl, and E is hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4
is (a) a 5-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein the ring is optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy, (C1-C6
alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, a 5-6 membered heterocyclic
ring having 1-2 ring heteroatoms independently selected from N and
O, and phenyl (b) a 7-8 membered bridged heterocyclic ring having a
ring nitrogen atom, (c) a 6-12 membered fused bicyclic heterocyclic
ring having 1-2 ring heteroatoms independently selected from N and
O and optionally substituted with 1-2 groups independently selected
from C1-C6 alkyl, or (d) a 7-10 membered spirocyclic heterocyclic
ring a ring nitrogen atom.
[0216] In one embodiment, D is pyrrolidinyl, piperidinyl or
piperazinyl, and E is hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4
is a 5-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein the ring is optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy, (C1-C6
alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, a 5-6 membered heterocyclic
ring having 1-2 ring heteroatoms independently selected from N and
O, and phenyl. In one embodiment, the ring is optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy and (C1-C6
alkoxy)C1-C6 alkyl.
[0217] Non-limiting examples when D is hetCyc.sup.1 and E is
hetCyc.sup.4C(.dbd.O)-- include the structures:
##STR00028## ##STR00029## ##STR00030## ##STR00031##
##STR00032##
[0218] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)-- where hetCyc.sup.4 is as
defined for General Formula I. In one embodiment, hetCyc.sup.4 is a
4-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and wherein the heterocyclic
ring is optionally substituted with one or more substituents
independently selected from the group consisting of halogen, OH,
CN, C1-C6 alkyl (optionally substituted with 1-3 fluoros), C1-C6
alkoxy, (C1-C6 alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, a 5-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and phenyl wherein said phenyl
is optionally substituted with one or more substituents selected
from halogen, C1-C6 alkyl and C1-C6 alkoxy. In one embodiment, the
heterocyclic ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, OH, CN, C1-C6 alkyl (optionally substituted with 1-3
fluoros), C1-C6 alkoxy, (C1-C6 alkoxy)C1-C6 alkyl,
(C3-C6)cycloalkyl, a 5-6 membered heterocyclic ring having 1-2 ring
heteroatoms independently selected from N and O, and phenyl.
[0219] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--, where hetCyc.sup.4 is a 4-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein the heterocyclic ring
is unsubstituted or substituted with C1-C6 alkyl. In one
embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.4(C1-C3
alkyl)C(.dbd.O)--, where hetCyc.sup.4 is a 5-6 membered
heterocyclic ring having 1-2 ring heteroatoms independently
selected from N and O, wherein the heterocyclic ring is
unsubstituted.
[0220] In one embodiment, D is piperazinyl and E is
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--, where hetCyc.sup.4 is a 5-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein the heterocyclic ring
is unsubstituted or substituted with C1-C6 alkyl. In one
embodiment, the ring is unsubstituted.
[0221] Non-limiting examples when D is hetCyc.sup.1 and E is
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)-- include the structures:
##STR00033##
[0222] In one embodiment, D is hetCyc.sup.1 and E is
(hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl, where hetCyc.sup.4 is as
defined for General Formula I. In one embodiment, hetCyc.sup.4 is a
4-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and wherein the heterocyclic
ring is optionally substituted with one or more substituents
independently selected from the group consisting of halogen, OH,
CN, C1-C6 alkyl (optionally substituted with 1-3 fluoros), C1-C6
alkoxy, (C1-C6 alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, a 5-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and phenyl wherein said phenyl
is optionally substituted with one or more substituents selected
from halogen, C1-C6 alkyl and C1-C6 alkoxy. In one embodiment, the
heterocyclic ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, OH, CN, C1-C6 alkyl (optionally substituted with 1-3
fluoros), C1-C6 alkoxy and (C1-C6 alkoxy)C1-C6 alkyl.
[0223] In one embodiment, D is hetCyc.sup.1 and E is
(hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl, where hetCyc.sup.4 is a 4-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein the heterocyclic ring
is unsubstituted. In one embodiment, D is piperazinyl and
hetCyc.sup.4 is a 4-6 membered heterocyclic ring having a ring
nitrogen atom. In one embodiment, hetCyc.sup.4 is 5-6 membered
heterocyclic ring having a ring nitrogen atom.
[0224] A non-limiting example when D is hetCyc.sup.1 and E is
(hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl is the structure:
##STR00034##
[0225] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.4C(.dbd.O)NH--, where hetCyc.sup.4 is as defined for
General Formula I. In one embodiment, hetCyc.sup.4 is (a) a 4-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein said ring is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy, and (C1-C6
alkoxy)C1-C6 alkyl, (b) a 7-8 membered bridged heterocyclic ring
having 1-2 ring heteroatoms independently selected from N and O,
(c) a 8-12 membered fused bicyclic heterocyclic ring having 1-2
ring heteroatoms independently selected from N and O, or (d) a 7-10
membered spirocyclic heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O.
[0226] Non-limiting examples when D is hetCyc.sup.1 and E is
hetCyc.sup.4C(.dbd.O)NH-- include the structures:
##STR00035## ##STR00036## ##STR00037## ##STR00038##
##STR00039##
[0227] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2;
Ar.sup.2C(.dbd.O)--; Ar.sup.2C1-C6 alkyl; (Ar.sup.2)hydroxy C2-C6
alkyl; or Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), hydroxyC1-C6 alkyl,
C1-C6 alkoxy and R.sup.eR.sup.fN-- where R.sup.e and R.sup.f are
independently H or C1-C6 alkyl, or R.sup.e and R.sup.f together
with the nitrogen to which they are attached form a 5-6 membered
azacyclic ring optionally having an additional ring heteroatom
selected from N and O; wherein for each instance of E, Ar.sup.2 is
phenyl optionally substituted with one or more substituents
independently selected from the group consisting of halogen, C1-C6
alkyl, C1-C6 alkoxy (optionally substituted with 1-3 fluoros),
fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, CN, a
5-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and R.sup.iR.sup.jN-- where
R.sup.i and R.sup.j are independently H and C1-C6 alkyl. In one
embodiment, Ar.sup.2 is phenyl optionally substituted with one or
more substituents independently selected from the group consisting
of halogen and C1-C3 alkyl.
[0228] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2;
Ar.sup.2C(.dbd.O)--; Ar.sup.2C1-C6 alkyl; (Ar.sup.2)hydroxy C2-C6
alkyl; or Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6
alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN-- where
R.sup.e and R.sup.f are independently H or C1-C6 alkyl; wherein for
each instance of E, Ar.sup.2 is phenyl optionally substituted with
one or more substituents independently selected from the group
consisting of halogen, C1-C3 alkyl, C1-C3 alkoxy, fluoroC1-C3
alkyl, difluoroC1-C3 alkyl and trifluoroC1-C3 alkyl. In one
embodiment, Ar.sup.2 is phenyl optionally substituted with one or
more substituents independently selected from the group consisting
of halogen and C1-C3 alkyl.
[0229] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2
wherein Ar.sup.2 is as defined for General Formula I. In one
embodiment, Ar.sup.2 is phenyl optionally substituted with one or
more substituents independently selected from the group consisting
of halogen. In one embodiment, hetCyc.sup.1 is pyrrolidinyl,
piperidinyl or morpholinyl. Non-limiting examples when D is
hetCyc.sup.1 and E is Ar.sup.2 include the structures:
##STR00040##
[0230] In one embodiment, D is hetCyc.sup.1 and E is
Ar.sup.2C(.dbd.O)-- wherein Ar.sup.2 is as defined for General
Formula I. In one embodiment, Ar.sup.2 is phenyl optionally
substituted with one or more substituents independently selected
from the group consisting of halogen or a 5-6 membered heterocyclic
ring having 1-2 ring heteroatoms independently selected from N and
O. In one embodiment, hetCyc.sup.1 is piperazinyl. Non-limiting
examples include the structures:
##STR00041##
[0231] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2C1-C6
alkyl wherein Ar.sup.2 is as defined for General Formula I. In one
embodiment, Ar.sup.2 is phenyl optionally substituted with one or
more substituents independently selected from the group consisting
of halogen, C1-C3 alkyl, C1-C3 alkoxy, CN, and R.sup.iR.sup.jN--
where R.sup.i and R.sup.j are independently H and C1-C6 alkyl. In
one embodiment, hetCyc.sup.1 is piperazinyl, piperidinyl,
azetidinyl, or piperazin-2-onyl. In one embodiment, E is
Ar.sup.2C1-C2 alkyl where Ar.sup.2 is phenyl optionally substituted
with one or more substituents independently selected from the group
consisting of halogen, C1-C6 alkyl, C1-C6 alkoxy, CN, and
R.sup.iR.sup.jN-- where R.sup.i and R.sup.j are independently H and
C1-C6 alkyl.
[0232] Non-limiting examples when D is hetCyc.sup.1 and E is
Ar.sup.2C1-C6 alkyl include the structures:
##STR00042## ##STR00043## ##STR00044## ##STR00045##
[0233] In one embodiment, D is hetCyc.sup.1 and E is
(Ar.sup.2)hydroxy C2-C6 alkyl wherein Ar.sup.2 is as defined for
General Formula I. In one embodiment, Ar.sup.2 is phenyl optionally
substituted with one or more substituents independently selected
from the group consisting of halogen. In one embodiment,
hetCyc.sup.1 is piperazinyl.
[0234] Non-limiting examples when D is hetCyc.sup.1 and E is
(Ar.sup.2)hydroxy C2-C6 alkyl include the structures:
##STR00046##
[0235] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2(C1-C3
alkyl)C(.dbd.O)--, wherein Ar.sup.2 is as defined for General
Formula I and the alkyl portion is optionally substituted with one
or two groups independently selected from the group consisting of
OH, C1-C6 alkyl (optionally substituted with 1-3 fluoros),
hydroxyC1-C6 alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where
R.sup.e and R.sup.f are independently H and C1-C6 alkyl, or R.sup.e
and R.sup.f together with the nitrogen to which they are attached
form a 5-6 membered azacyclic ring optionally having an additional
ring heteroatom selected from N and O. In one embodiment,
hetCyc.sup.1 is piperazinyl. In one embodiment, Ar.sup.2 is phenyl
optionally substituted with one or more substituents independently
selected from halogen, CN, C1-C6 alkyl and C1-C6 alkoxy (optionally
substituted with 1-3 fluoros).
[0236] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2(C1-C3
alkyl)C(.dbd.O)--, wherein Ar.sup.2 is as defined for General
Formula I and the alkyl portion is optionally substituted with one
or two groups independently selected from the group consisting of
OH, C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy and
R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are independently H
and C1-C6 alkyl. In one embodiment, hetCyc.sup.1 is
piperazinyl.
[0237] Non-limiting examples when D is hetCyc.sup.1 and E is
Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- include the structures:
##STR00047## ##STR00048## ##STR00049## ##STR00050##
##STR00051##
[0238] In one embodiment, D is hetCyc.sup.1 and E is
hetAr.sup.2C(.dbd.O)--; (hetAr.sup.2)hydroxyC2-C6 alkyl; or
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl, or R.sup.e and R.sup.f
together with the nitrogen to which they are attached form a 5-6
membered azacyclic ring optionally having an additional ring
heteroatom selected from N and O; wherein for each instance of E,
hetAr.sup.2 is a 5-6 membered heteroaryl ring having 1-3 ring
heteroatoms independently selected from N, O and S and optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, C1-C6 alkyl, C1-C6 alkoxy
(optionally substituted with 1-3 fluoros), fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, hydroxyC1-C6 alkyl,
(C3-C6)cycloalkyl, (C1-C6 alkoxy)C1-C6 alkyl, CN, and R'R''N--
where R' and R'' are independently H or C1-C6 alkyl.
[0239] In one embodiment, D is hetCyc.sup.1 and E is
hetAr.sup.2C(.dbd.O)--; (hetAr.sup.2)hydroxyC2-C6 alkyl;
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl; or hetAr.sup.2C1-C6
alkyl; wherein for each instance of E, hetAr.sup.2 is a 5-6
membered heteroaryl ring having 1-3 ring heteroatoms independently
selected from N and O and optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C3 alkyl, C1-C3 alkoxy (optionally substituted with 1-3
fluoros), fluoroC1-C3 alkyl, difluoroC1-C3 alkyl, trifluoroC1-C3
alkyl and hydroxyC1-C3 alkyl.
[0240] In one embodiment, hetAr.sup.2 is pyridyl, pyridazinyl,
imidazolyl, pyrazolyl or isoxazolyl optionally substituted with one
or more substituents independently selected from the group
consisting of halogen, C1-C3 alkyl, C1-C3 alkoxy (optionally
substituted with 1-3 fluoros), fluoroC1-C3 alkyl, difluoroC1-C3
alkyl, trifluoroC1-C3 alkyl, hydroxyC1-C6 alkyl, (C3-C6)cycloalkyl
and (C1-C6 alkoxy)C1-C6 alkyl. In one embodiment, hetAr.sup.2 is
optionally substituted with one or more substituents independently
selected C1-C3 alkyl.
[0241] In one embodiment, D is hetCyc.sup.1 and E is
hetAr.sup.2C(.dbd.O)--, where hetAr.sup.2 is as defined for General
Formula I. In one embodiment, hetAr.sup.2 is a 5-6 membered
heteroaryl ring having 1-2 ring heteroatoms independently selected
from N and O and optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C3 alkyl, (C3-C6)cycloalkyl and (C1-C6 alkoxy)C1-C6
alkyl. In one embodiment, hetCyc.sup.1 is piperazinyl.
[0242] Non-limiting examples when D is hetCyc.sup.1 and E is
hetAr.sup.2C(.dbd.O)-- include the structures:
##STR00052## ##STR00053##
[0243] In one embodiment, D is hetCyc.sup.1 and E is
(hetAr.sup.2)hydroxyC2-C6 alkyl where hetAr.sup.2 is as defined for
General Formula I. In one embodiment, hetAr.sup.2 is a 5-6 membered
heteroaryl ring having 1-2 ring heteroatoms independently selected
from N and O wherein said ring is unsubstituted. In one embodiment,
hetAr.sup.2 is pyridinyl. Non-limiting examples includes the
structures:
##STR00054##
[0244] In one embodiment, D is hetCyc.sup.1 and E is
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)--, wherein hetAr.sup.2 is as
defined for General Formula I and the alkyl portion is optionally
substituted with one or two groups independently selected from the
group consisting of OH, C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6
alkoxy (optionally substituted with 1-3 fluoros) and
R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are independently H or
C1-C6 alkyl. In one embodiment, the alkyl portion of
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- is unsubstituted. In one
embodiment, hetAr.sup.2 is a 5-6 membered heteroaryl ring having
1-2 ring nitrogen atoms and optionally substituted with one or more
substituents independently selected from the group consisting of
halogen and C1-C6 alkyl. In one embodiment, hetCyc.sup.1 is
piperazinyl.
[0245] Non-limiting examples D is hetCyc.sup.1 and E is
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- include the structures:
##STR00055##
[0246] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.1R.sup.2NC(.dbd.O)--; R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)--
wherein the alkyl portion is optionally substituted with phenyl;
R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl; or
R.sup.1R.sup.2NC(.dbd.O)NH--; where in each instance, R.sup.1 is H,
C1-C6 alkyl or (C1-C6 alkoxy)C1-C6 alkyl, and R.sup.2 is H, C1-C6
alkyl (optionally substituted with 1-3 fluoros), (C1-C6
alkoxy)C1-C6 alkyl (optionally substituted with 1-3 fluoros),
Cyc.sup.3, hydroxyC1-C6 alkyl (optionally substituted with 1-3
fluoros), C1-C6 alkoxy (optionally substituted with 1-3 fluoros),
(C1-C6 alkoxy)C(.dbd.O), hetCyc.sup.7, Ar.sup.3, Ar.sup.3C1-C3
alkyl-, hydroxyC1-C6 alkoxy or (3-6C cycloalkyl)CH.sub.2O--.
[0247] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.1R.sup.2NC(.dbd.O)--; R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)--
wherein the alkyl portion is optionally substituted with phenyl;
R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl; or
R.sup.1R.sup.2NC(.dbd.O)NH--; where in each instance, R.sup.1 is H
or C1-C6 alkyl, and R.sup.2 is H, C1-C6 alkyl (optionally
substituted with 1-3 fluoros), (C1-C6 alkoxy)C1-C6 alkyl
(optionally substituted with 1-3 fluoros), Cyc.sup.3, hydroxyC1-C6
alkyl (optionally substituted with 1-3 fluoros), C1-C6 alkoxy
(optionally substituted with 1-3 fluoros), (C1-C6 alkoxy)C(.dbd.O),
hetCyc.sup.7, Ar.sup.3 or Ar.sup.3C1-C3 alkyl-.
[0248] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.1R.sup.2NC(.dbd.O)--, where R.sup.1 is H, C1-C6 alkyl or
(C1-C6 alkoxy)C1-C6 alkyl, and R.sup.2 is C1-C6 alkyl (optionally
substituted with 1-3 fluoros), (C1-C6 alkoxy)C1-C6 alkyl
(optionally substituted with 1-3 fluoros), Cyc.sup.3, hydroxyC1-C6
alkyl (optionally substituted with 1-3 fluoros), C1-C6 alkoxy
(optionally substituted with 1-3 fluoros), (C1-C6 alkoxy)C(.dbd.O),
hetCyc.sup.7, Ar.sup.3, Ar.sup.3C1-C3 alkyl-, hydroxyC1-C6 alkoxy
or (3-6C cycloalkyl)CH.sub.2O--. In one embodiment, hetCyc.sup.1 is
pyrrolidinyl, piperidinyl (optionally substituted with C1-C3
alkyl), piperazinyl, morpholinyl or azetidinyl. In one embodiment,
hetCyc.sup.1 is pyrrolidinyl, piperidinyl (optionally substituted
with C1-C3 alkyl), piperazinyl, or morpholinyl.
[0249] Non-limiting examples when D is hetCyc.sup.1 and E is
R.sup.1R.sup.2NC(.dbd.O)-- include the structures:
##STR00056## ##STR00057## ##STR00058## ##STR00059## ##STR00060##
##STR00061## ##STR00062## ##STR00063## ##STR00064##
[0250] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein the C1-C3 alkyl
portion is optionally substituted with phenyl. In one embodiment,
R.sup.1 is H or C1-C6 alkyl and R.sup.2 is H, C1-C6 alkyl
(optionally substituted with 1-3 fluoros) or (C1-C6
alkoxy)C(.dbd.O)--. Non-limiting examples include the
structures:
##STR00065## ##STR00066##
[0251] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl. In one embodiment, R.sup.1 is
H or C1-C6 alkyl and R.sup.2 is C1-C6 alkyl (optionally substituted
with 1-3 fluoros). Non-limiting examples include the
structures:
##STR00067##
[0252] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.1R.sup.2NC(.dbd.O)NH--, where R.sup.1 is H or C1-C6 alkyl,
and R.sup.2 is C1-C6 alkyl (optionally substituted with 1-3
fluoros). Non-limiting examples include the structures:
##STR00068##
[0253] In one embodiment, D is hetCyc.sup.1 and E is
CH.sub.3SO.sub.2(C1-C6 alkyl)C(.dbd.O)--. A non-limiting example is
the structure:
##STR00069##
[0254] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkyl)SO.sub.2--. Non-limiting examples include the structures:
##STR00070##
[0255] In one embodiment, D is hetCyc.sup.1 and E is (C3-C6
cycloalkyl)CH.sub.2SO.sub.2--. A non-limiting example is the
structure:
##STR00071##
[0256] In one embodiment, D is hetCyc.sup.1 and E is
hetCyc.sup.5-SO.sub.2--, where hetCyc.sup.5 is a 5-6 membered
heterocyclic ring having a ring heteroatom selected from O and N.
Non-limiting examples include the structures:
##STR00072##
[0257] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.4R.sup.5NSO.sub.2--, where R.sup.4 and R.sup.5 are
independently H or C1-C6 alkyl. Non-limiting examples include the
structures:
##STR00073##
[0258] In one embodiment, D is hetCyc.sup.1 and E is
R.sup.6C(.dbd.O)NH--, where R.sup.6 is C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy, (C1-C6 alkoxy)(C1-C6 alkyl), phenyl or
hetCyc.sup.8. Non-limiting examples include the structures:
##STR00074## ##STR00075##
[0259] In one embodiment, D is hetCyc.sup.1 and E is hetCyc.sup.6,
where hetCyc.sup.6 is a 5 membered heterocyclic ring having one or
two ring heteroatoms independently selected from N and O, wherein
the ring substituted with oxo and wherein the ring is further
optionally substituted with one or more substituents independently
selected from the group consisting of OH and C1-6 alkyl.
Non-limiting examples include the structures:
##STR00076##
[0260] In one embodiment, D is hetCyc.sup.1 and E is
hetAr.sup.2C1-C6 alkyl, where hetAr.sup.2 is as defined for General
Formula I. In one embodiment, D is hetCyc.sup.1 and E is
hetAr.sup.2C1-C6 alkyl, where hetAr.sup.2 is a 5-6 membered
heteroaryl ring having 1-3 ring heteroatoms independently selected
from N and O, and optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, trifluoroC1-C6 alkyl, C1-C6 alkoxy
(optionally substituted with 1-3 fluoros), hydroxyC1-C6 alkyl, CN
and (R.sup.aR.sup.bN)C1-C6 alkyl; and hetCyc.sup.1 is piperazinyl
(optionally substituted with oxo), piperidinyl or pyrrolidinyl. In
one embodiment, hetAr.sup.2 is a 5-6-membered heteroaryl ring
having 1-2 ring nitrogen atoms optionally substituted with one or
more substituents independently selected from the group consisting
of halogen, C1-C6 alkyl, trifluoroC1-C6 alkyl, C1-C6 alkoxy
(optionally substituted with 1-3 fluoros), hydroxyC1-C6 alkyl, CN
and (R.sup.aR.sup.bN)C1-C6 alkyl. In one embodiment, hetAr.sup.2 is
pyridyl optionally substituted with one or more substituents
independently selected from the group consisting of halogen, C1-C6
alkyl, trifluoroC1-C6 alkyl, C1-C6 alkoxy (optionally substituted
with 1-3 fluoros), hydroxyC1-C6 alkyl, CN and
(R.sup.aR.sup.bN)C1-C6 alkyl. In one embodiment, hetAr.sup.2 is
pyridyl optionally substituted with C1-C6 alkoxy (optionally
substituted with 1-3 fluoros). In one embodiment, hetAr.sup.2 is a
5-membered heteroaryl ring having 1-2 ring nitrogen atoms
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C6 alkyl,
trifluoroC1-C6 alkyl, C1-C6 alkoxy (optionally substituted with 1-3
fluoros), hydroxyC1-C6 alkyl, CN and (R.sup.aR.sup.bN)C1-C6
alkyl.
[0261] Non-limiting examples when D is hetCyc.sup.1 and E is
hetAr.sup.2C1-C6 alkyl include the structures:
##STR00077## ##STR00078## ##STR00079## ##STR00080## ##STR00081##
##STR00082##
[0262] In one embodiment, D is hetCyc.sup.1 and E is
(hetCyc.sup.4)C1-C6 alkyl, where hetCyc.sup.4 is as defined for
General Formula I. In one embodiment, E is (hetCyc.sup.4)C1-C6
alkyl, where hetCyc.sup.4 is a 4-6 membered heterocyclic ring
having 1-2 ring heteroatoms independently selected from N and O,
wherein said heterocyclic ring is optionally substituted with
(C1-C6 alkyl)C(.dbd.O)--. In one embodiment, D is hetCyc.sup.1 and
E is hetCyc.sup.4(C1-C2 alkyl), where hetCyc.sup.4 is a 4-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein said heterocyclic ring
is optionally substituted with (C1-C6 alkyl)C(.dbd.O)--.
[0263] Non-limiting embodiments when D is hetCyc.sup.1 and E is
(hetCyc.sup.4)C1-C6 alkyl include the structures:
##STR00083##
[0264] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkoxy)C1-C6 alkyl wherein said alkoxy portion is optionally
substituted with 1-3 fluoros. Non-limiting examples include the
structures:
##STR00084##
[0265] In one embodiment, D is hetCyc.sup.1 and E is (C3-C6
cycloalkoxy)C1-C6 alkyl. A non-limiting example is the
structure:
##STR00085##
[0266] In one embodiment, D is hetCyc.sup.1 and E is (C3-C6
cycloalkyl)C1-C6 alkyl wherein said cycloalkyl is optionally
substituted with 1-2 fluoros. Non-limiting examples include the
structures:
##STR00086##
[0267] In one embodiment, D is hetCyc.sup.1 and E is
(R.sup.gR.sup.hN)C1-C6 alkyl wherein R.sup.g and R.sup.h are
independently H or C1-C6 alkyl. Non-limiting examples include the
structures:
##STR00087##
[0268] In one embodiment, D is hetCyc.sup.1 and E is Ar.sup.2--O--,
where Ar.sup.2 is as defined for General Formula I. In one
embodiment, Ar.sup.2 is phenyl optionally substituted with one or
more halogens. Non-limiting examples include the structures:
##STR00088##
[0269] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkylSO2)C1-C6 alkyl. A non-limiting example is the structure:
##STR00089##
[0270] In one embodiment, D is hetCyc.sup.1 and E is (C1-C6
alkoxy)C(.dbd.O)NHC1-C6 alkyl. A non-limiting example is the
structure:
##STR00090##
[0271] In one embodiment, D is hetCyc.sup.1 and E is (C3-C6
cycloalkyl)SO.sub.2-- wherein said cycloalkyl is optionally
substituted with C1-C6 alkyl. A non-limiting example includes the
structure:
##STR00091##
[0272] In one embodiment, D is hetCyc.sup.1 and E is (N--(C1-C3
alkyl)pyridinonyl)C1-C3 alkyl. Non-limiting examples include the
structures:
##STR00092##
[0273] In one embodiment, D is hetCyc.sup.1 and E is
(Ar.sup.4SO.sub.2)C1-C6 alkyl where Ar.sup.4 is as defined for
Formula I. In one embodiment, Ar.sup.4 is unsubstituted phenyl. A
non-limiting example when D is hetCyc.sup.1 and E is
(Ar.sup.4SO.sub.2)C1-C6 alkyl includes the structure:
##STR00093##
[0274] In one embodiment, D is hetCyc.sup.1 and E is (N--(C1-C3
alkyl)pyridinonyl)C1-C3 alkyl. Non-limiting examples include the
structures:
##STR00094##
[0275] In one embodiment of the D-E group, D is hetCyc.sup.1
(wherein hetCyc.sup.1 is a 4-6 membered heterocyclic ring having 2
ring atoms and is optionally substituted with a C3-C6
cycloalkylidene ring, or an oxo group) and the E group is on a ring
nitrogen atom of the D ring, wherein E is selected from (a)
hydrogen, (d) C1-C6 alkyl optionally substituted with one to three
fluoros, (e) hydroxyC1-C6 alkyl optionally substituted with one to
three fluoros, (h) (C1-C6 alkoxy)hydroxy C1-C6 alkyl optionally
substituted with one to three fluoros, (i) (C1-C6 alkyl)C(.dbd.O)--
optionally substituted with one to three fluoros, (j) (hydroxy
C1-C6 alkyl)C(.dbd.O)-- optionally substituted with one to three
fluoros, (k) (C1-C6 alkoxy)C(.dbd.O)--, (1) (C1-C6 alkoxy)(C1-C6
alkyl)C(.dbd.O)--, (n) Cyc.sup.1, (o) Cyc.sup.1C(.dbd.O)--, (p)
Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or more groups independently
selected from the group consisting of OH, fluoro, C1-C3 alkoxy and
R.sup.cR.sup.dN--, where R.sup.c and R.sup.d are independently H or
C1-C6 alkyl, (q) hetCyc.sup.4, (r) hetCyc.sup.4C(.dbd.O)--, (s)
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--, (t)
(hetCyc.sup.4)C(.dbd.O)C1-C2 alkyl, (w) Ar.sup.2C(.dbd.O)--, (x)
Ar.sup.2C1-C6 alkyl, (y) (Ar.sup.2)hydroxy C2-C6 alkyl, (z)
Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl, (aa)
hetAr.sup.2C(.dbd.O)--, (bb) (hetAr.sup.2)hydroxyC2-C6 alkyl, (cc)
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl, (dd)
R.sup.1R.sup.2NC(.dbd.O)--, (ee) R.sup.1R.sup.2N(C1-C3
alkyl)C(.dbd.O)-- wherein the alkyl portion is optionally
substituted with phenyl, (ff) R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl,
(hh) CH.sub.3SO.sub.2(C1-C6 alkyl)C(.dbd.O)--, (ii) (C1-C6
alkyl)SO.sub.2--, (jj) (C3-C6 cycloalkyl)CH.sub.2SO.sub.2--, (kk)
hetCyc.sup.5-SO.sub.2--, (ll) R.sup.4R.sup.5NSO.sub.2--, (nn)
hetCyc.sup.6, (oo) hetAr.sup.2C1-C6 alkyl, (pp) (hetCyc.sup.4)C1-C6
alkyl, (qq) (C1-C6 alkoxy)C1-C6 alkyl wherein said alkoxy portion
is optionally substituted with 1-3 fluoros, (rr) (C3-C6
cycloalkoxy)C1-C6 alkyl, (ss) (C3-C6 cycloalkyl)C1-C6 alkyl wherein
said cycloalkyl is optionally substituted with 1-2 fluoros, (tt)
(R.sup.gR.sup.hN)C1-C6 alkyl wherein R.sup.g and R.sup.h are
independently H or C1-C6 alkyl, (vv) (C1-C6 alkylSO2)C1-C6 alkyl,
(ww) (C1-C6 alkoxy)C(.dbd.O)NHC1-C6 alkyl, (C3-C6
cycloalkyl)SO.sub.2-- wherein said cycloalkyl is optionally
substituted with C1-C6 alkyl, (yy) (C3-C6 cycloalkyl)SO.sub.2--
wherein said cycloalkyl is optionally substituted with C1-C6 alkyl,
(aaa) (N--(C1-C3 alkyl)pyridinonyl)C1-C3 alkyl, or (bbb)
(Ar.sup.4SO.sub.2)C1-C6 alkyl. In one embodiment, D is a
piperazinyl ring.
[0276] In one embodiment of the D-E group, D is piperidinyl,
pyrrolidinyl, azetidinyl or morphylinyl, each of which is
optionally substituted with C1-C3 alkyl, fluoroC1-C3 alkyl,
difluoroC1-C3 alkyl, or trifluoroC1-C3 alkyl, wherein E is selected
from (a) hydrogen, (b) OH, (c) R.sup.aR.sup.bN--, (f) C1-C6 alkoxy
optionally substituted with one to three fluoros, (g) hydroxy(C1-C6
alkoxy) optionally substituted with one to three fluoros, (i)
(C1-C6 alkyl)C(.dbd.O)-- optionally substituted with one to three
fluoros, (k) (C1-C6 alkoxy)C(.dbd.O)--, (m) HC(.dbd.O)--, (r)
hetCyc.sup.4C(.dbd.O)--, (u) hetCyc.sup.4C(.dbd.O)NH--, (v)
Ar.sup.2, (dd) R.sup.1R.sup.2NC(.dbd.O)--, (x) Ar.sup.2C1-C6 alkyl,
(ff) R.sup.1R.sup.2NC(.dbd.O)C1-C2 alkyl, (gg)
R.sup.1R.sup.2NC(.dbd.O)NH--, (ii) (C1-C6 alkyl)SO.sub.2--, (ll)
R.sup.4R.sup.5NSO.sub.2--, (mm) R.sup.6C(.dbd.O)NH--, (nn)
hetCyc.sup.6, or (uu) Ar.sup.2--O--. In one embodiment, D is a
piperidinyl ring.
[0277] In one embodiment of Formula I, D is hetCyc.sup.2, where
hetCyc.sup.2 is a 7-8 membered bridged heterocyclic ring having 1-3
ring heteroatoms independently selected from N and O, wherein the
heterocyclic ring is optionally substituted with one or more
substituents independently selected from the group consisting of
C1-C3 alkyl. In one embodiment, hetCyc.sup.2 is a 7-8 membered
bridged heterocyclic ring having 1-2 ring nitrogen atoms, wherein
the ring is optionally substituted with one or more substituents
independently selected from the group consisting of C1-C3 alkyl. In
one embodiment, hetCyc.sup.2 is unsubstituted. Non-limiting
examples of D when represented by hetCyc.sup.2 include the
structures:
##STR00095##
where the asterisk indicates the point of attachment to the E
group.
[0278] In one embodiment of Formula I, D is hetCyc.sup.2 and E is
(a) hydrogen, (b) OH, (c) R.sup.aR.sup.bN-- where R.sup.a is H or
C1-C6 alkyl and R.sup.b is H, C1-C6 alkyl or phenyl, (d) C1-C6
alkyl optionally substituted with one to three fluoros, (e)
hydroxyC1-C6 alkyl optionally substituted with one to three
fluoros, (f) C1-C6 alkoxy optionally substituted with one to three
fluoros, (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted with
one to three fluoros, (k) (C1-C6 alkoxy)C(.dbd.O)--, (o)
Cyc.sup.1C(.dbd.O)--, (w) Ar.sup.2C(.dbd.O)--, (x) Ar.sup.2C1-C6
alkyl, (y) (Ar.sup.2)hydroxy C2-C6 alkyl, (aa)
hetAr.sup.2C(.dbd.O)--, (cc) hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)--
wherein the alkyl portion is optionally substituted with one or two
groups independently selected from the group consisting of OH,
C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy and
R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are independently H or
C1-C6 alkyl, or R.sup.e and R.sup.f together with the nitrogen to
which they are attached form a 5-6 membered azacyclic ring
optionally having an additional ring heteroatom selected from N and
O, (ee) R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein said alkyl
portion is optionally substituted with phenyl, (oo)
hetAr.sup.2C1-C6 alkyl or (qq) (C1-C6 alkoxy)C1-C6 alkyl wherein
said alkoxy portion is optionally substituted with 1-3 fluoros.
[0279] In one embodiment, D is hetCyc.sup.2 and E is hydrogen.
Non-limiting examples include the structures:
##STR00096##
[0280] In one embodiment, D is hetCyc.sup.2 and E is OH. A
non-limiting example is the structure:
##STR00097##
[0281] In one embodiment, D is hetCyc.sup.2 and E is
R.sup.aR.sup.bN-- where R.sup.a is H or C1-C6 alkyl and R.sup.b is
H, C1-C6 alkyl or phenyl. In one embodiment, D is hetCyc.sup.2 and
E is R.sup.aR.sup.bN-- where R.sup.a and R.sup.b are H. A
non-limiting example is the structure:
##STR00098##
[0282] In one embodiment, D is hetCyc.sup.2 and E is C1-C6 alkyl
optionally substituted with one to three fluoros. A non-limiting
example includes the structure:
##STR00099##
[0283] In one embodiment, D is hetCyc.sup.2 and E is C1-C6 alkoxy
optionally substituted with one to three fluoros. A non-limiting
example is the structure:
##STR00100##
[0284] In one embodiment, D is hetCyc.sup.2 and E is (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros.
Non-limiting examples include the structures:
##STR00101##
[0285] In one embodiment, D is hetCyc.sup.2 and E is (C1-C6
alkoxy)C(.dbd.O)--. Non-limiting examples include the
structures:
##STR00102##
[0286] In one embodiment, D is hetCyc.sup.2 and E is
Ar.sup.2C(.dbd.O)--, where Ar.sup.2 is as defined for General
Formula I. In one embodiment, Ar.sup.2 is phenyl optionally
substituted with one or more substituents independently selected
from halogen and C1-C6 alkoxy (optionally substituted with 1-3
fluoros). Non-limiting examples when D is hetCyc.sup.2 and E is
Ar.sup.2C(.dbd.O) include the structures:
##STR00103##
[0287] In one embodiment, D is hetCyc.sup.2 and E is Ar.sup.2C1-C6
alkyl where Ar.sup.2 is as defined for General Formula I. In one
embodiment, Ar.sup.2 is an unsubstituted phenyl. Non-limiting
examples when D is hetCyc.sup.2 and E is Ar.sup.2C1-C6 alkyl
include the structures:
##STR00104##
[0288] In one embodiment, D is hetCyc.sup.2 and E is
hetAr.sup.2C(.dbd.O)-- where hetAr.sup.2 is as defined for Formula
I. In one embodiment hetAr.sup.2 is a 6-membered heteroaryl ring
having 1-2 ring nitrogen atoms and optionally substituted with one
or more substituents independently selected from the group
consisting of halogen, C1-C6 alkyl, C1-C6 alkoxy (optionally
substituted with 1-3 fluoros), fluoroC1-C6 alkyl, difluoroC1-C6
alkyl, trifluoroC1-C6 alkyl, hydroxyC1-C6 alkyl, (C3-C6)cycloalkyl,
(C1-C6 alkoxy)C1-C6 alkyl, CN and R'R''N-- where R' and R'' are
independently H or C1-C3 alkyl. In one embodiment hetAr.sup.2 is
pyridyl optionally substituted with one or more substituents
independently selected from halogen and C1-C6 alkoxy (optionally
substituted with 1-3 fluoros). Non-limiting examples when D is
hetCyc.sup.2 and E is hetAr.sup.2C(.dbd.O)-- include the
structures:
##STR00105##
[0289] In one embodiment, D is hetCyc.sup.2 and E is
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl, or R.sup.e and R.sup.f
together with the nitrogen to which they are attached form a 5-6
membered azacyclic ring optionally having an additional ring
heteroatom selected from N and O, and hetAr.sup.2 is as defined for
Formula I. In one embodiment, E is hetAr.sup.2(C1-C3
alkyl)C(.dbd.O)-- wherein the alkyl portion is unsubstituted. In
one embodiment, hetAr.sup.2 is a 6-membered heteroaryl ring having
1-2 ring nitrogen atoms and optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, C1-C6 alkoxy (optionally substituted with 1-3
fluoros), fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl, hydroxyC1-C6 alkyl, (C3-C6)cycloalkyl, (C1-C6 alkoxy)C1-C6
alkyl, CN and R'R''N-- where R' and R'' are independently H or
C1-C3 alkyl. In one embodiment hetAr.sup.2 is pyridyl optionally
substituted with one or more substituents independently selected
from halogen. A non-limiting example D is hetCyc.sup.2 and E is
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- includes the structure:
##STR00106##
[0290] In one embodiment, D is hetCyc.sup.2 and E is
R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)--. A non-limiting example is
the structure:
##STR00107##
[0291] In one embodiment, D is hetCyc.sup.2 and E is
hetAr.sup.2C1-C6 alkyl, where hetAr.sup.2 is as defined for Formula
I. In one embodiment, E is hetAr.sup.2C1-C6 alkyl wherein the alkyl
portion is unsubstituted. In one embodiment, hetAr.sup.2 is a
6-membered heteroaryl ring having 1-2 ring nitrogen atoms and
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C6 alkyl, C1-C6
alkoxy (optionally substituted with 1-3 fluoros), fluoroC1-C6
alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, hydroxyC1-C6
alkyl, (C3-C6)cycloalkyl, (C1-C6 alkoxy)C1-C6 alkyl, CN and
R'R''N-- where R' and R'' are independently H or C1-C3 alkyl. In
one embodiment hetAr.sup.2 is pyridyl optionally substituted with
C1-C6 alkoxy (optionally substituted with 1-3 fluoros).
Non-limiting examples when D is hetCyc.sup.2 and E is
hetAr.sup.2C1-C6 alkyl include the structures:
##STR00108##
[0292] In one embodiment, D is hetCyc.sup.2 and E is (C1-C6
alkoxy)C1-C6 alkyl wherein said alkoxy portion is optionally
substituted with 1-3 fluoros. A non-limiting example includes the
structure:
##STR00109##
[0293] In one embodiment, D is hetCyc.sup.2 (where hetCyc.sup.2 is
a 7-8 membered bridged heterocyclic ring having two ring nitrogen
atoms, wherein the heterocyclic ring is optionally substituted with
one or more substituents independently selected from the group
consisting of C1-C3 alkyl), and E is on a ring nitrogen atom of
hetCyc.sup.2 wherein E is (a) hydrogen, (d) C1-C6 alkyl optionally
substituted with one to three fluoros, (i) (C1-C6 alkyl)C(.dbd.O)--
optionally substituted with one to three fluoros, (w)
Ar.sup.2C(.dbd.O)--, (x) Ar.sup.2C1-C6 alkyl, (aa)
hetAr.sup.2C(.dbd.O)--, (oo) hetAr.sup.2C1-C6 alkyl, or (qq) (C1-C6
alkoxy)C1-C6 alkyl wherein said alkoxy portion is optionally
substituted with 1-3 fluoros.
[0294] In one embodiment, D is hetCyc.sup.2 (where hetCyc.sup.2 is
a 7-8 membered bridged heterocyclic ring having one ring nitrogen
atom, wherein the heterocyclic ring is optionally substituted with
one or more substituents independently selected from the group
consisting of C1-C3 alkyl), and E is on a ring carbon atom of
hetCyc.sup.2 wherein E is (b) OH, (c) R.sup.aR.sup.bN-- where
R.sup.a is H or C1-C6 alkyl and R.sup.b is H, C1-C6 alkyl or
phenyl, or (f) C1-C6 alkoxy optionally substituted with one to
three fluoros.
[0295] In one embodiment of Formula I, D is hetCyc.sup.3, where
hetCyc.sup.3 is a 7-11 membered heterospirocyclic ring having 1-2
ring heteroatoms independently selected from N and O and wherein
the ring is optionally substituted with C1-C3 alkyl. In one
embodiment, hetCyc.sup.3 is unsubstituted. Non-limiting examples
when D is represented by hetCyc.sup.3 include the structures:
##STR00110## ##STR00111## ##STR00112##
where the asterisk indicates the point of attachment to the E
group.
[0296] In one embodiment, D is hetCyc.sup.3 and E is selected from
(a) hydrogen, (c) R.sup.aR.sup.bN-- where R.sup.a is H or C1-C6
alkyl and R.sup.b is H, C1-C6 alkyl or phenyl, (d) C1-C6 alkyl
optionally substituted with one to three fluoros, (e) hydroxyC1-C6
alkyl optionally substituted with one to three fluoros, (i) (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros,
(j) (hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally substituted with
one to three fluoros, (k) (C1-C6 alkoxy)C(.dbd.O)--, (o)
Cyc.sup.1C(.dbd.O)--, (p) Cyc.sup.1(C1-C6 alkyl)C(.dbd.O), (r)
hetCyc.sup.4C(.dbd.O)--, (w) Ar.sup.2C(.dbd.O)--, (x) Ar.sup.2C1-C6
alkyl, (y) (Ar.sup.2)hydroxy C2-C6 alkyl, (z) Ar.sup.2(C1-C3
alkyl)C(.dbd.O)-- wherein said alkyl portion is optionally
substituted with one or two groups independently selected from the
group consisting of OH, C1-C6 alkyl (optionally substituted with
1-3 fluoros), hydroxyC1-C6 alkyl, C1-C6 alkoxy and
R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are independently H or
C1-C6 alkyl, or R.sup.e and R.sup.f together with the nitrogen to
which they are attached form a 5-6 membered azacyclic ring
optionally having an additional ring heteroatom selected from N and
O, (dd) R.sup.1R.sup.2NC(.dbd.O), (ee) R.sup.1R.sup.2N(C1-C3
alkyl)C(.dbd.O)--, (mm) R.sup.6C(.dbd.O)NH--, (xx) (C3-C6
cycloalkoxy)C(.dbd.O)-- and (zz) Ar.sup.4CH.sub.2OC(.dbd.O)--.
[0297] In one embodiment, D is hetCyc.sup.3 (wherein a 7-11
membered heterospirocyclic ring having two ring nitrogen atoms),
wherein the ring is optionally substituted with C1-C3 alkyl), and E
is on a ring nitrogen atom of ring D, and E is selected from (a)
hydrogen, (d) C1-C6 alkyl optionally substituted with one to three
fluoros, (e) hydroxyC1-C6 alkyl optionally substituted with one to
three fluoros, (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted
with one to three fluoros, (j) (hydroxy C1-C6 alkyl)C(.dbd.O)--
optionally substituted with one to three fluoros, (k) (C1-C6
alkoxy)C(.dbd.O)--, (o) Cyc.sup.1C(.dbd.O)--, (p) Cyc.sup.1(C1-C6
alkyl)C(.dbd.O), (r) hetCyc.sup.4C(.dbd.O)--, (w)
Ar.sup.2C(.dbd.O)--, (x) Ar.sup.2C1-C6 alkyl, (y) (Ar.sup.2)hydroxy
C2-C6 alkyl, (z) Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein said
alkyl portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), hydroxyC1-C6 alkyl,
C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are
independently H or C1-C6 alkyl, or R.sup.e and R.sup.f together
with the nitrogen to which they are attached form a 5-6 membered
azacyclic ring optionally having an additional ring heteroatom
selected from N and O, (dd) R.sup.1R.sup.2NC(.dbd.O), (ee)
R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)--, (xx) (C3-C6
cycloalkoxy)C(.dbd.O)-- and (zz) Ar.sup.4CH.sub.2OC(.dbd.O)--.
[0298] In one embodiment, D is hetCyc.sup.3 (wherein hetCyc.sup.3
is a 7-11 membered heterospirocyclic ring having one ring nitrogen
atom, wherein the ring is optionally substituted with C1-C3 alkyl),
and E is on a ring carbon atom of ring D, and E is selected from
(a) hydrogen, (c) R.sup.aR.sup.bN-- where R.sup.a is H or C1-C6
alkyl and R.sup.b is H, C1-C6 alkyl or phenyl, and (mm)
R.sup.6C(.dbd.O)NH--.
[0299] In one embodiment, D is hetCyc.sup.3 and E is hydrogen.
Non-limiting examples include the structures:
##STR00113##
[0300] In one embodiment, D is hetCyc.sup.3 and E is
R.sup.aR.sup.bN-- where R.sup.a is H or C1-C6 alkyl and R.sup.b is
H, C1-C6 alkyl or phenyl. In one embodiment, R.sup.a and R.sup.b
are H. A non-limiting example is the structure:
##STR00114##
[0301] In one embodiment, D is hetCyc.sup.3 and E is C1-C6 alkyl
optionally substituted with one to three fluoros. Non-limiting
examples include the structures:
##STR00115##
[0302] In one embodiment, D is hetCyc.sup.3 and E is hydroxyC1-C6
alkyl optionally substituted with one to three fluoros.
Non-limiting examples include the structures:
##STR00116##
[0303] In one embodiment, D is hetCyc.sup.3 and E is (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros.
Non-limiting examples include the structures:
##STR00117##
[0304] In one embodiment, D is hetCyc.sup.3 and E is (hydroxy C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros.
Non-limiting examples include the structures:
##STR00118##
[0305] In one embodiment, D is hetCyc.sup.3 and E is (C1-C6
alkoxy)C(.dbd.O)--. Non-limiting examples include the
structures:
##STR00119## ##STR00120## ##STR00121## ##STR00122##
##STR00123##
[0306] In one embodiment, D is hetCyc.sup.3 and E is
Cyc.sup.1C(.dbd.O)-- where Cyc.sup.1 is as defined for General
Formula I. In one embodiment, Cyc.sup.1 is unsubstituted.
Non-limiting examples include the structures:
##STR00124##
[0307] In one embodiment, D is hetCyc.sup.3 and E is
Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- wherein said alkyl portion is
optionally substituted with one or more groups independently
selected from the group consisting of OH, fluoro, C1-C3 alkoxy and
R.sup.cR.sup.dN--, where R.sup.c and R.sup.d are independently H or
C1-C6 alkyl, and Cyc.sup.1 is as defined for General Formula I.
[0308] In one embodiment, D is hetCyc.sup.3 and E is
Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- wherein said alkyl portion is
unsubstituted, and Cyc.sup.1 is as defined for General Formula I.
In one embodiment, Cyc.sup.1 is an unsubstituted C3-C6
cycloalkyl.
[0309] Non-limiting examples when D is hetCyc.sup.3 and E is
Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)-- include the structures:
##STR00125##
[0310] In one embodiment, D is hetCyc.sup.3 and E is
hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4 is as defined for
General Formula I. In one embodiment, hetCyc.sup.4 is a 4-6
membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, wherein said ring is
unsubstituted. A non-limiting example when D is hetCyc.sup.3 and E
is hetCyc.sup.4C(.dbd.O)-- is the structure:
##STR00126##
[0311] In one embodiment, D is hetCyc.sup.3 and E is
Ar.sup.2C(.dbd.O)-- where Ar.sup.2 is as defined for General
Formula I. In one embodiment, Ar.sup.2 is unsubstituted. A
non-limiting example is the structure:
##STR00127##
[0312] In one embodiment, D is hetCyc.sup.3 and E is Ar.sup.2C1-C6
alkyl. In one embodiment, Ar.sup.2 is phenyl which is
unsubstituted. Non-limiting examples include the structures:
##STR00128##
[0313] In one embodiment, D is hetCyc.sup.3 and E is Ar.sup.2(C1-C3
alkyl)C(.dbd.O)-- wherein the alkyl portion is optionally
substituted with one or two groups independently selected from the
group consisting of OH, C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6
alkoxy and R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are
independently H or C1-C6 alkyl or R.sup.e and R.sup.f together with
the nitrogen to which they are attached form a 5-6 membered
azacyclic ring optionally having an additional ring heteroatom
selected from N and O, and Ar.sup.2 is as defined for General
Formula I. In one embodiment, D is hetCyc.sup.3 and E is
Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
unsubstituted. In one embodiment, Ar.sup.2 is phenyl which is
unsubstituted. A non-limiting example is the structure:
##STR00129##
[0314] In one embodiment, D is hetCyc.sup.3 and E is
R.sup.1R.sup.2NC(.dbd.O)-- where R.sup.1 and R.sup.2 are as defined
for General Formula I. In one embodiment, R.sup.1 is H or C1-C6
alkyl and R.sup.2 is H or C1-C6 alkyl optionally substituted with
1-3 fluoros. Non-limiting examples include the structures:
##STR00130##
[0315] In one embodiment, D is hetCyc.sup.3 and E is
R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein the C1-C3 alkyl
portion is optionally substituted with phenyl, and R.sup.1 and
R.sup.2 are as defined for General Formula I. In one embodiment,
R.sup.1 is H or C1-C6 alkyl and R.sup.2 is H or C1-C6 alkyl
optionally substituted with 1-3 fluoros. A non-limiting example is
the structure:
##STR00131##
[0316] In one embodiment, D is hetCyc.sup.3 and E is
R.sup.6C(.dbd.O)NH--, where R.sup.6 is C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy, (C1-C6 alkoxy)C1-C6 alkyl, phenyl or
hetCyc.sup.8. In one embodiment, R.sup.6 is C1-C6 alkoxy. A
non-limiting example is the structure:
##STR00132##
[0317] In one embodiment, D is hetCyc.sup.3 and E is (C3-C6
cycloalkoxy)C(.dbd.O)--. A non-limiting example is the
structure:
##STR00133##
[0318] In one embodiment, D is hetCyc.sup.3 and E is
Ar.sup.4CH.sub.2OC(.dbd.O)--. A non-limiting example is the
structure:
##STR00134##
[0319] In one embodiment of Formula I, D is hetCyc.sup.9, where
hetCyc.sup.9 is a fused 9-10 membered heterocyclic ring having 1-3
ring nitrogen atoms and optionally substituted with oxo
##STR00135##
where the asterisk indicates the point of attachment to the E
group.
[0320] In one embodiment, General Formula I includes compounds of
Formula I-A, wherein X.sup.1 is CH or CH.sub.3, X.sup.2 is CH,
X.sup.3 is CH, and X.sup.3 is CH; and A, B, D and E are as defined
for General Formula I.
[0321] In one embodiment, General Formula I includes compounds of
Formula I-B, wherein X.sup.1 is N, CH or CH.sub.3, X.sup.2 is CH or
N, X.sup.3 is CH or N, and X.sup.3 is CH or N, wherein one of
X.sup.1, X.sup.2, X.sup.3 and X.sup.4 is N; and A, B, D and E are
as defined for General Formula I.
[0322] In one embodiment, General Formula I includes compounds of
Formula I-C, wherein B is hetAr.sup.1, wherein hetAr.sup.1 is a
5-membered heteroaryl ring having 1-2 ring nitrogen atoms, wherein
the heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
C1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl, and hydroxyC1-C6 alkyl; and X.sup.1, X.sup.2, X.sup.3,
X.sup.4, A, D and E are as defined for General Formula I.
[0323] In one embodiment, General Formula I includes compounds of
Formula I-D, wherein D is hetCyc.sup.1 or hetCyc.sup.3, where
hetCyc.sup.1 is a 4-6 membered heterocyclic ring having 1-2 ring
atoms selected from N and O, wherein the heterocyclic ring is
optionally substituted with one or more substituents independently
selected from the group consisting of C1-C3 alkyl, fluoroC1-C3
alkyl, difluoroC1-C3 alkyl, trifluoroC1-C3 alkyl, OH, or the
heterocyclic ring is substituted with a C3-C6 cycloalkylidene ring,
or said heterocyclic ring is substituted with an oxo group;
hetCyc.sup.3 is a 7-11 membered heterospirocyclic ring having 1-2
ring heteroatoms independently selected from N and O, wherein the
ring is optionally substituted with C1-C3 alkyl; and X.sup.1,
X.sup.2, X.sup.3, X.sup.4, A, B and E are as defined for General
Formula I. In one embodiment of Formula I-D, D is hetCyc.sup.1.
[0324] In one embodiment of Formula I-D, D is hetCyc.sup.1 where
hetCyc.sup.1 is a 5-6 membered heterocyclic ring having 1-2 ring
nitrogen atoms, wherein the heterocyclic ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C3 alkyl; and X.sup.1, X.sup.2,
X.sup.3, X.sup.4, A, B and E are as defined for General Formula I.
In one embodiment of Formula I-D, D is hetCyc.sup.1 where
hetCyc.sup.1 is piperazinyl or piperidinyl, wherein the piperidinyl
ring is optionally substituted with C1-C3 alkyl, and X.sup.1,
X.sup.2, X.sup.3, X.sup.4, A, B and E are as defined for General
Formula I. In one embodiment of Formula I-D, D is hetCyc.sup.1
where hetCyc.sup.1 is piperazinyl, and X.sup.1, X.sup.2, X.sup.3,
X.sup.4, A, B and E are as defined for General Formula I.
[0325] In one embodiment of Formula I-D, D is hetCyc.sup.3 wherein
the hetCyc.sup.3 is optionally substituted with C1-C3 alkyl, and
X.sup.1, X.sup.2, X.sup.3, X.sup.4, A, B and E are as defined for
General Formula I. In one embodiment of Formula I-D, D is
hetCyc.sup.3 wherein hetCyc.sup.3 is unsubstituted.
[0326] In one embodiment, Formula I includes compounds of Formula
I-E, wherein:
[0327] X.sup.1 is CH or N;
[0328] X.sup.2 is CH or N;
[0329] X.sup.3 is CH;
[0330] X.sup.4 is CH;
[0331] wherein zero, one or two of X.sup.1 and X.sup.2 is N;
[0332] A is H, Cl or CN;
[0333] B is hetAr.sup.1;
[0334] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-3 ring
heteroatoms independently selected from N, S and O, wherein the
heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, hydroxyC1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, cyanoC1-C6 alkyl, (C1-C6
alkoxy)C1-C6 alkyl, (C1-C4 alkoxy)CH.sub.2C(.dbd.O)--, (C1-C4
alkoxy)C(.dbd.O)C1-C3 alkyl, C3-C6 cycloalkyl,
(R.sup.aR.sup.bN)C1-C6 alkyl and hetCyc.sup.a;
[0335] D is hetCyc.sup.1 or hetCyc.sup.3;
[0336] hetCyc.sup.1 is a 4-6 membered heterocyclic ring having 1-2
ring nitrogen atoms, wherein the heterocyclic ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C3 alkyl, or said heterocyclic ring
is substituted with an oxo group;
[0337] hetCyc.sup.3 is a 7-11 membered heterospirocyclic ring
having 2 ring nitrogen atoms, wherein the ring is optionally
substituted with C1-C3 alkyl;
[0338] E is
[0339] (a) hydrogen,
[0340] (d) C1-C6 alkyl optionally substituted with one to three
fluoros,
[0341] (e) hydroxyC1-C6 alkyl optionally substituted with one to
three fluoros,
[0342] (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted with one
to three fluoros,
[0343] (j) (hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally substituted
with one to three fluoros,
[0344] (k) (C1-C6 alkoxy)C(.dbd.O)--,
[0345] (o) Cyc.sup.1C(.dbd.O)--,
[0346] (r) hetCyc.sup.4C(.dbd.O)--,
[0347] (x) Ar.sup.2C1-C6 alkyl,
[0348] (y) (Ar.sup.2)hydroxy C2-C6 alkyl,
[0349] (z) Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), hydroxyC1-C6 alkyl,
C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are
independently H or C1-C6 alkyl, or R.sup.e and R.sup.f together
with the nitrogen to which they are attached form a 5-6 membered
azacyclic ring optionally having an additional ring heteroatom
selected from N and O,
[0350] (cc) hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with one or two groups
independently selected from the group consisting of OH, C1-C6
alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--,
where R.sup.e and R.sup.f are independently H or C1-C6 alkyl,
R.sup.e and R.sup.f together with the nitrogen to which they are
attached form a 5-6 membered azacyclic ring optionally having an
additional ring heteroatom selected from N and O,
[0351] (dd) R.sup.1R.sup.2NC(.dbd.O)--,
[0352] (ee) R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein the
alkyl portion is optionally substituted with phenyl,
[0353] (ii) (C1-C6 alkyl)SO.sub.2--, or
[0354] (mm) R.sup.6C(.dbd.O)NH--;
[0355] Cyc.sup.1 is a C3-C6 cycloalkyl, wherein (a) the cycloalkyl
is optionally substituted with one or more substituents
independently selected from the group consisting of OH, halogen,
C1-C6 alkoxy, CN, hydroxyC1-C6 alkyl, (C1-C6 alkoxy)C1-C6 alkyl,
and C1-C6 alkyl optionally substituted with 1-3 fluoros, or (b) the
cycloalkyl is substituted with phenyl, wherein the phenyl is
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C3 alkyl, C1-C3
alkoxy and CF, or (c) the cycloalkyl is substituted with a 5-6
membered heteroaryl ring having 1-3 ring heteroatoms independently
selected from N and O, wherein the heteroaryl ring is optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, C1-C3 alkyl, C1-C3 alkoxy and
CF.sub.3;
[0356] hetCyc.sup.4 is a 4-6 membered heterocyclic ring having 1-2
ring heteroatoms independently selected from N, O and S wherein
said S is optionally oxidized to SO.sub.2 and is optionally
substituted with one or more substituents independently selected
from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy, (C1-C6
alkoxy)C1-C6 alkyl, (C3-C6)cycloalkyl, (C1-C6 alkyl)C(.dbd.O)--, a
5-6 membered heterocyclic ring having 1-2 ring heteroatoms
independently selected from N and O, and phenyl wherein said phenyl
is optionally substituted with one or more substituents selected
from halogen, C1-C6 alkyl and C1-C6 alkoxy;
[0357] Ar.sup.2 is phenyl optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, C1-C6 alkoxy, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, CN, a 5-6 membered
heterocyclic ring having 1-2 ring heteroatoms independently
selected from N and O, and R.sup.iR.sup.jN-- where R.sup.i and
R.sup.j are independently H and C1-C6 alkyl;
[0358] hetAr.sup.2 is a 5-6 membered heteroaryl ring having 1-3
ring heteroatoms independently selected from N, O and S, and
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C6 alkyl, C1-C6
alkoxy, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl, (C3-C6)cycloalkyl, (C1-C6 alkoxy)C1-C6 alkyl, CN and
R'R''N-- where R' and R'' are independently H or C1-C3 alkyl;
[0359] R.sup.1 is H, C1-C6 alkyl or (C1-C6 alkoxy)C1-C6 alkyl;
[0360] R.sup.2 is H, C1-C6 alkyl (optionally substituted with 1-3
fluoros), (C1-C6 alkoxy)C1-C6 alkyl (optionally substituted with
1-3 fluoros), Cyc.sup.3, hydroxyC1-C6 alkyl (optionally substituted
with 1-3 fluoros), C1-C6 alkoxy (optionally substituted with 1-3
fluoros), (C1-C6 alkoxy(C(.dbd.O), hetCyc.sup.7, Ar.sup.3,
Ar.sup.3C1-C3 alkyl-, hydroxyC1-C6 alkoxy or (C3-C6
cycloalkyl)CH.sub.2O--;
[0361] Cyc.sup.3 is a 3-6 membered carbocyclic ring optionally
substituted with 1-2 groups independently selected from the group
consisting of C1-C6 alkoxy, OH and halogen;
[0362] Ar.sup.3 is phenyl optionally substituted with one or more
substituents independently selected from halogen, C1-C3 alkyl,
C1-C3 alkoxy, fluoroC1-C3 alkyl, difluoroC1-C3 alkyl and
trifluoroC1-C3 alkyl;
[0363] hetCyc.sup.7 is a 5-6 membered heterocyclic ring having a
ring heteroatom selected from O and N wherein the ring is
optionally substituted with C1-C6 alkyl;
[0364] R.sup.6 is C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy,
(C1-C6 alkoxy)C1-C6 alkyl, phenyl or hetCyc.sup.8; and
[0365] hetCyc.sup.8 is a 5-6 membered heterocyclic ring having a
ring heteroatom selected from O and N, wherein the heterocyclic
ring is optionally substituted with C1-C6 alkyl.
[0366] In one embodiment of Formula I-E, hetAr.sup.1 is a
5-membered heteroaryl ring having 1-2 ring nitrogen atoms, wherein
the heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
C1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl and hydroxyC1-C6 alkyl. In one embodiment, B is pyrazolyl or
imidazolyl optionally substituted with C1-C6 alkyl, fluoroC1-C6
alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl or hydroxyC1-C6
alkyl. In one embodiment, B is pyrazolyl optionally substituted
with C1-C6 alkyl.
[0367] In one embodiment of Formula I-E, hetCyc.sup.1 is
piperazinyl and E is (a) hydrogen, (d) C1-C6 alkyl optionally
substituted with one to three fluoros, (e) hydroxyC1-C6 alkyl
optionally substituted with one to three fluoros, (i) (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros,
(j) (hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally substituted with
one to three fluoros, (k) (C1-C6 alkoxy)C(.dbd.O)--, (o)
Cyc.sup.1C(.dbd.O)--, (r) hetCyc.sup.4C(.dbd.O)--, (x)
Ar.sup.2C1-C6 alkyl, (y) (Ar.sup.2)hydroxy C2-C6 alkyl, (z)
Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl, (cc) hetAr.sup.2(C1-C3
alkyl)C(.dbd.O)-- wherein the alkyl portion is optionally
substituted with one or two groups independently selected from the
group consisting of OH, C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6
alkoxy and R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are
independently H or C1-C6 alkyl, (dd) R.sup.1R.sup.2NC(.dbd.O)--,
(ee) R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl
portion is optionally substituted with phenyl, (ii) (C1-C6
alkyl)SO.sub.2--, or (mm) R.sup.6C(.dbd.O)NH--. In some such
embodiments, E is (d) C1-C6 alkyl optionally substituted with one
to three fluoros, (e) hydroxyC1-C6 alkyl optionally substituted
with one to three fluoros, (i) (C1-C6 alkyl)C(.dbd.O)-- optionally
substituted with one to three fluoros, (j) (hydroxy C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros,
(o) Cyc.sup.1C(.dbd.O)--, (r) hetCyc.sup.4C(.dbd.O)--, (x)
Ar.sup.2C1-C6 alkyl, or (y) (Ar.sup.2)hydroxy C2-C6 alkyl.
[0368] In one embodiment of Formula I-E, hetCyc.sup.1 is
piperazinyl and E is (i) (C1-C6 alkyl)C(.dbd.O)-- optionally
substituted with one to three fluoros, (j) (hydroxy C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros,
or (r) hetCyc.sup.4C(.dbd.O)--.
[0369] In one embodiment of Formula I-E, hetCyc.sup.1 is
piperazinyl and E is (hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally
substituted with one to three fluoros.
[0370] In one embodiment of Formula I-E, hetCyc.sup.1 is
piperazinyl and E is hetCyc.sup.4C(.dbd.O)--. In one embodiment of
Formula I-E, hetCyc.sup.1 is piperazinyl and E is
hetCyc.sup.4C(.dbd.O)-- where hetCyc.sup.4 is pyrrolidinyl
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, OH, CN, C1-C6 alkyl
(optionally substituted with 1-3 fluoros), C1-C6 alkoxy and (C1-C6
alkoxy)C1-C6 alkyl.
[0371] In one embodiment of Formula I-E, hetCyc.sup.1 is
piperazinyl and E is hetCyc.sup.4C(.dbd.O)--, where hetCyc.sup.4 is
pyrrolidinyl optionally substituted with C1-C6 alkoxy.
[0372] In one embodiment of Formula I-E, hetCyc.sup.1 is
piperazinyl and E is (C1-C6 alkyl)C(.dbd.O)-- optionally
substituted with one to three fluoros.
[0373] In one embodiment of Formula I-E, X.sup.1 is N and each of
X.sup.2, X.sup.3 and X.sup.4 is CH.
[0374] In one embodiment of Formula I-E, A is CN.
[0375] In one embodiment of Formula I-E, A is Cl.
[0376] In one embodiment, Formula I includes compounds of Formula
I-F, wherein:
[0377] X.sup.1 is N and each of X.sup.2, X.sup.3 and X.sup.4 is
CH;
[0378] A is CN or Cl;
[0379] B is hetAr.sup.1;
[0380] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-2 ring
nitrogen atoms, wherein the heteroaryl ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6
alkyl;
[0381] D is hetCyc.sup.1;
[0382] hetCyc.sup.1 is piperazinyl;
[0383] E is (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted
with one to three fluoros, (j) (hydroxy C1-C6 alkyl)C(.dbd.O)--
optionally substituted with one to three fluoros, or (r)
hetCyc.sup.4C(.dbd.O)--; and
[0384] hetCyc.sup.4 is as defined for General Formula I.
[0385] In one embodiment of Formula I-F, hetAr.sup.1 is pyrazolyl
optionally substituted one or more substituents independently
selected from the group consisting of C1-C6 alkyl, fluoroC1-C6
alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6
alkyl. In one embodiment, B is pyrazolyl or imidazolyl optionally
substituted with C1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6
alkyl, trifluoroC1-C6 alkyl or hydroxyC1-C6 alkyl. In one
embodiment of Formula I-F, hetAr.sup.1 is pyrazolyl optionally
substituted one or more substituents independently selected from
the group consisting of C1-C6 alkyl. In one embodiment, B is
pyrazolyl or imidazolyl optionally substituted with C1-C6 alkyl,
fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl or
hydroxyC1-C6 alkyl.
[0386] In one embodiment of Formula I-F, hetCyc.sup.4 is a
5-membered heterocyclic ring having a ring nitrogen atom, wherein
the heterocyclic ring is optionally substituted with C1-C6
alkoxy.
[0387] In one embodiment of Formula I-F, A is CN.
[0388] In one embodiment, Formula I includes compounds of Formula
I-G, wherein:
[0389] X.sup.1 is N and each of X.sup.2, X.sup.3 and X.sup.4 is
CH;
[0390] A is CN;
[0391] B is hetAr.sup.1;
[0392] hetAr.sup.1 is a 5-membered heteroaryl ring having 2 ring
nitrogen atoms, wherein the heteroaryl ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6
alkyl;
[0393] D is hetCyc.sup.1;
[0394] hetCyc.sup.1 is piperazinyl;
[0395] E is (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted
with one to three fluoros, (j) (hydroxy C1-C6 alkyl)C(.dbd.O)--
optionally substituted with one to three fluoros, or (r)
hetCyc.sup.4C(.dbd.O)--; and
[0396] hetCyc.sup.4 is a 5-membered heterocyclic ring having a ring
nitrogen atom, wherein the heterocyclic ring is optionally
substituted with C1-C6 alkoxy.
[0397] In one embodiment of Formula I-G, B is pyrazolyl optionally
substituted one or more substituents independently selected from
the group consisting of C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6 alkyl.
In one embodiment of Formula I-G, B is pyrazolyl optionally
substituted one or more substituents independently selected from
the group consisting of C1-C6 alkyl.
[0398] In one embodiment of Formula I-G, E is (i) (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three
fluoros.
[0399] In one embodiment of Formula I-G, E is (j) (hydroxy C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three
fluoros.
[0400] In one embodiment of Formula I-G, E is (r)
hetCyc.sup.4C(.dbd.O)--.
[0401] In one embodiment, Formula I includes compounds of Formula
I-H wherein:
[0402] X.sup.1 is N and each of X.sup.2, X.sup.3 and X.sup.4 is
CH;
[0403] A is CN;
[0404] B is hetAr.sup.1;
[0405] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-2 ring
nitrogen atoms, wherein the heteroaryl ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6
alkyl;
[0406] D is hetCyc.sup.3;
[0407] hetCyc.sup.3 is a 7-11 membered heterospirocyclic ring
having 1-2 ring heteroatoms independently selected from N and O,
wherein the ring is optionally substituted with C1-C3 alkyl;
and
[0408] E is as defined for General Formula I.
[0409] In one embodiment of Formula I-H, E is (a) hydrogen; (e)
hydroxyC1-C6 alkyl optionally substituted with one to three
fluoros; (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted with
one to three fluoros; (j) (hydroxy C1-C6 alkyl)C(.dbd.O)--
optionally substituted with one to three fluoros; (k) (C1-C6
alkoxy)C(.dbd.O)--; (o) Cyc.sup.1C(.dbd.O)--; (w)
Ar.sup.2C(.dbd.O)--; or (z) Ar.sup.2(C1-C3 alkyl)C(.dbd.O)--
wherein the alkyl portion is optionally substituted with one or two
groups independently selected from the group consisting of OH,
C1-C6 alkyl, hydroxyC1-C6 alkyl, C1-C6 alkoxy and
R.sup.eR.sup.fN--, where R.sup.e and R.sup.f are independently H or
C1-C6 alkyl; or (mm) R.sup.6C(.dbd.O)NH--.
[0410] In one embodiment of Formula I-H, E is (k) (C1-C6
alkoxy)C(.dbd.O)-- or (o) Cyc.sup.1C(.dbd.O)--.
[0411] In one embodiment, Formula I includes compounds of Formula
I-I, wherein:
[0412] X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are CH;
[0413] A is H, Cl or CN;
[0414] B is hetAr.sup.1;
[0415] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-3 ring
heteroatoms independently selected from N, S and O, wherein the
heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, hydroxyC1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, cyanoC1-C6 alkyl, (C1-C6
alkoxy)C1-C6 alkyl, (C1-C4 alkoxy)CH.sub.2C(.dbd.O)--, (C1-C4
alkoxy)C(.dbd.O)C1-C3 alkyl, C3-C6 cycloalkyl,
(R.sup.aR.sup.bN)C1-C6 alkyl and hetCyc.sup.a;
[0416] D is hetCyc.sup.1;
[0417] hetCyc.sup.1 is a 5-6 membered heterocyclic ring having 1-2
ring nitrogen atoms, wherein the heterocyclic ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C3 alkyl;
[0418] E is
[0419] (a) hydrogen,
[0420] (i) (C1-C6 alkyl)C(.dbd.O)-- optionally substituted with one
to three fluoros,
[0421] (j) (hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally substituted
with one to three fluoros,
[0422] (k) (C1-C6 alkoxy)C(.dbd.O)--,
[0423] (ee) R.sup.1R.sup.2N(C1-C3 alkyl)C(.dbd.O)-- wherein the
alkyl portion is optionally substituted with phenyl, or
[0424] (ii) (C1-C6 alkyl)SO.sub.2;
[0425] R.sup.1 is H or C1-C6 alkyl;
[0426] R.sup.2 is H, C1-C6 alkyl (optionally substituted with 1-3
fluoros), (C1-C6 alkoxy)C1-C6 alkyl (optionally substituted with
1-3 fluoros), Cyc.sup.3, hydroxyC1-C6 alkyl (optionally substituted
with 1-3 fluoros), C1-C6 alkoxy (optionally substituted with 1-3
fluoros), (C1-C6 alkoxy(C(.dbd.O), hetCyc.sup.7, Ar.sup.3 or
Ar.sup.3C1-C3 alkyl-;
[0427] Cyc.sup.3 is a 3-6 membered carbocyclic ring optionally
substituted with 1-2 groups independently selected from the group
consisting of C1-C6 alkoxy, OH and halogen;
[0428] Ar.sup.3 is phenyl optionally substituted with one or more
substituents independently selected from halogen, C1-C3 alkyl,
C1-C3 alkoxy, fluoroC1-C3 alkyl, difluoroC1-C3 alkyl and
trifluoroC1-C3 alkyl; and
[0429] hetCyc.sup.7 is a 5-6 membered heterocyclic ring having a
ring heteroatom selected from O and N wherein the ring is
optionally substituted with C1-C6 alkyl.
[0430] In one embodiment of Formula I-I, hetAr.sup.1 is a
5-membered heteroaryl ring having 2 ring nitrogen atoms, wherein
the heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
C1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl and hydroxyC1-C6 alkyl.
[0431] In one embodiment, Formula I includes compounds of Formula
I-I wherein
[0432] X.sup.1 is N and each of X.sup.2, X.sup.3 and X.sup.4 is
CH;
[0433] A is CN or C1;
[0434] B is hetAr.sup.1;
[0435] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-2 ring
nitrogen atoms, wherein said heteroaryl ring is optionally
substituted with one or more substituents independently selected
from the group consisting of C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6
alkyl;
[0436] D is hetCyc.sup.1;
[0437] hetCyc.sup.1 is piperazinyl;
[0438] E is (d) C1-C6 alkyl optionally substituted with one to
three fluoros, (e) hydroxyC1-C6 alkyl optionally substituted with
one to three fluoros, (o) Cyc.sup.1C(.dbd.O)--, (x) Ar.sup.2C1-C6
alkyl, (y) (Ar.sup.2)hydroxy C2-C6 alkyl, or (bb)
(hetAr.sup.2)hydroxyC2-C6 alkyl; and
[0439] Ar.sup.2 and hetAr.sup.2 are as defined for General Formula
I.
[0440] In one embodiment, Formula I includes compounds of Formula
I-J, wherein:
[0441] X.sup.1 is N and each of X.sup.2, X.sup.3 and X.sup.4 is
CH;
[0442] A is CN;
[0443] B is hetAr.sup.1;
[0444] hetAr.sup.1 is a 5-membered heteroaryl ring having 1-3 ring
heteroatoms independently selected from N, S and O, wherein the
heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, hydroxyC1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl, cyanoC1-C6 alkyl, (C1-C6
alkoxy)C1-C6 alkyl, (C1-C4 alkoxy)CH.sub.2C(.dbd.O)--, (C1-C4
alkoxy)C(.dbd.O)C1-C3 alkyl, C3-C6 cycloalkyl,
(R.sup.aR.sup.bN)C1-C6 alkyl, and hetCyc.sup.a;
[0445] D is hetCyc.sup.1;
[0446] hetCyc.sup.1 is piperazinyl;
[0447] E is (x) Ar.sup.2C1-C6 alkyl or (oo) hetAr.sup.2C1-C6
alkyl;
[0448] Ar.sup.2 is phenyl optionally substituted with one or more
substituents independently selected from the group consisting of
halogen, C1-C6 alkyl, C1-C6 alkoxy (optionally substituted with 1-3
fluoros), fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl, CN, a 5-6 membered heterocyclic ring having 1-2 ring
heteroatoms independently selected from N and O, and
R.sup.iR.sup.jN-- where R.sup.i and R.sup.j are independently H and
C1-C6 alkyl; and
[0449] hetAr.sup.2 is a 5-6 membered heteroaryl ring having 1-3
ring heteroatoms independently selected from N, O and S and
optionally substituted with one or more substituents independently
selected from the group consisting of halogen, C1-C6 alkyl, C1-C6
alkoxy, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl, (C3-C6)cycloalkyl, (C1-C6 alkoxy)C1-C6 alkyl, CN and
R'R''N-- where R' and R'' are independently H or C1-C3 alkyl.
[0450] In one embodiment of Formula I-J, hetAr.sup.1 is a
5-membered heteroaryl ring having 1-2 ring nitrogen atoms, wherein
the heteroaryl ring is optionally substituted with one or more
substituents independently selected from the group consisting of
C1-C6 alkyl, fluoroC1-C6 alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6
alkyl and hydroxyC1-C6 alkyl. In one embodiment, B is pyrazolyl or
imidazolyl optionally substituted with C1-C6 alkyl, fluoroC1-C6
alkyl, difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl or hydroxyC1-C6
alkyl. In one embodiment, B is pyrazolyl optionally substituted
with C1-C6 alkyl.
[0451] In one embodiment of Formula I-J, E is (x) Ar.sup.2C1-C6
alkyl or (oo) hetAr.sup.2C1-C6 alkyl. In one embodiment of Formula
I-J, E is hetAr.sup.2C1-C6 alkyl.
[0452] In one embodiment of Formula I-J, B is pyrazolyl optionally
substituted one or more substituents independently selected from
the group consisting of C1-C6 alkyl, fluoroC1-C6 alkyl,
difluoroC1-C6 alkyl, trifluoroC1-C6 alkyl and hydroxyC1-C6 alkyl.
In one embodiment of Formula I-J, B is pyrazolyl optionally
substituted one or more substituents independently selected from
the group consisting of C1-C6 alkyl.
[0453] It will be appreciated that certain compounds provided
herein may contain one or more centers of asymmetry and may
therefore be prepared and isolated in a mixture of isomers such as
a racemic mixture, or in an enantiomerically pure form.
[0454] It will further be appreciated that the compounds of General
Formula I or their salts may be isolated in the form of solvates,
and accordingly that any such solvate is included within the scope
of the present invention. For example, compounds of General Formula
I and salts thereof can exist in unsolvated as well as solvated
forms with pharmaceutically acceptable solvents such as water,
ethanol, and the like.
[0455] The compounds of General Formula I include pharmaceutically
acceptable salts thereof. In addition, the compounds of General
Formula I also include other salts of such compounds which are not
necessarily pharmaceutically acceptable salts, and which may be
useful as intermediates for preparing and/or purifying compounds of
General Formula I and/or for separating enantiomers of compounds of
Formula I. Non-limiting examples of salts include monochloride,
dichloride, trifluoroacetic acid, and di-trifluoroacetic acid salts
of compounds of Formula I.
[0456] In one embodiment, the compounds of General Formula I
include the compounds of Examples 1-567, 569-570, 572, 574-654, and
656-744 and stereoisomers and pharmaceutically acceptable salts and
solvates thereof. In one embodiment, the compounds of Examples
1-567, 569-570, 572, 574-654, and 656-744 are in the free base
form. In one embodiment, the compounds of Examples 1-567, 569-570,
572, 574-654, and 656-744 are monochloride, dichloride,
trifluoroacetic acid, or di-trifluoroacetic acid salts.
[0457] In some embodiments, the compounds provided herein exhibit
potent and selective RET inhibition. For example, the compounds
provided herein exhibit nanomolar potency against wild type RET and
select RET mutants, including the KIF5B-RET fusion and V804M
gatekeeper mutation, with minimal activity against related
kinases.
[0458] In some embodiments, the compounds of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, selectively
target a RET kinase. For example, a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof, can
selectively target a RET kinase over another kinase or non-kinase
target.
[0459] In some embodiments, a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, exhibits at
least a 30-fold selectivity for a RET kinase over another kinase.
For example, a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, exhibits at least a 40-fold
selectivity; at least a 50-fold selectivity; at least a 60-fold
selectivity; at least a 70-fold selectivity; at least a 80-fold
selectivity; at least a 90-fold selectivity; or at least 100-fold
selectivity for a RET kinase over another kinase. In some
embodiments, selectivity for a RET kinase over another kinase is
measured in a cellular assay (e.g., a cellular assay as provided
herein).
[0460] In some embodiments, the compounds provided herein can
exhibit selectivity for a RET kinase over a KDR kinase (e.g.,
VEGFR2). In some embodiments, the selectivity for a RET kinase over
a KDR kinase is observed without loss of gatekeeper mutant potency.
In some embodiments, the selectivity over a KDR kinase is at least
10-fold (e.g., at least a 40-fold selectivity; at least a 50-fold
selectivity; at least a 60-fold selectivity; at least a 70-fold
selectivity; at least a 80-fold selectivity; at least a 90-fold
selectivity; or at least 100-fold) as compared to the inhibition of
KIF5B-RET (i.e. the compounds were more potent against KIF5B-RET
than KDR). In some embodiments, the selectivity for a RET kinase
over a KDR kinase is about 30-fold. Without being bound by any
theory, potent KDR kinase inhibition is believed to be a common
feature among multikinase inhibitors (MKIs) that target RET and may
be the source of the dose-limiting toxicities observed with such
compounds.
[0461] In some embodiments, inhibition of V804M was similar to that
observed for wild-type RET. For example, inhibition of V804M was
within about 2-fold (e.g., about 5-fold, about 7-fold, about
10-fold) of inhibition of wild-type RET (i.e. the compounds were
similarly potent against wild-type RET and V804M). In some
embodiments, the compounds provided herein exhibit selective
cytotoxicity to RET-mutant cells.
[0462] In some embodiments, the compounds of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, exhibit one or
more of high GI absorption, low clearance, and low potential for
drug-drug interactions.
[0463] The term "pharmaceutically acceptable" indicates that the
substance or composition is compatible chemically and/or
toxicologically, with the other ingredients comprising a
formulation, and/or the patient being treated therewith.
[0464] Compounds provided herein may also contain unnatural
proportions of atomic isotopes at one or more of the atoms that
constitute such compounds. That is, an atom, in particular when
mentioned in relation to a compound according to Formula I,
comprises all isotopes and isotopic mixtures of that atom, either
naturally occurring or synthetically produced, either with natural
abundance or in an isotopically enriched form. For example, when
hydrogen is mentioned, it is understood to refer to .sup.1H,
.sup.2H, .sup.3H or mixtures thereof; when carbon is mentioned, it
is understood to refer to .sup.11C, .sup.12C, .sup.13C, .sup.14C or
mixtures thereof; when nitrogen is mentioned, it is understood to
refer to .sup.13N, .sup.14N, .sup.15N or mixtures thereof; when
oxygen is mentioned, it is understood to refer to .sup.14O,
.sup.15O, .sup.16O, .sup.17O, .sup.18O or mixtures thereof; and
when fluoro is mentioned, it is understood to refer to .sup.18F,
.sup.19F or mixtures thereof. The compounds provided herein
therefore also comprise compounds with one or more isotopes of one
or more atom, and mixtures thereof, including radioactive
compounds, wherein one or more non-radioactive atoms has been
replaced by one of its radioactive enriched isotopes. Radiolabeled
compounds are useful as therapeutic agents, e.g., cancer
therapeutic agents, research reagents, e.g., assay reagents, and
diagnostic agents, e.g., in vivo imaging agents. All isotopic
variations of the compounds provided herein, whether radioactive or
not, are intended to be encompassed within the scope of the present
invention.
[0465] For illustrative purposes, Schemes 1-4 show general methods
for preparing the compounds provided herein as well as key
intermediates. For a more detailed description of the individual
reaction steps, see the Examples section below. Those skilled in
the art will appreciate that other synthetic routes may be used to
synthesize the inventive compounds. Although specific starting
materials and reagents are depicted in the Schemes and discussed
below, other starting materials and reagents can be easily
substituted to provide a variety of derivatives and/or reaction
conditions. In addition, many of the compounds prepared by the
methods described below can be further modified in light of this
disclosure using conventional chemistry well known to those skilled
in the art.
##STR00136##
[0466] Scheme 1 shows a general scheme for the synthesis of
compound 13 where A is CN, and B, X.sup.1, X.sup.2, X.sup.3,
X.sup.4, D and E are as defined for General Formula I, and the
synthesis of compound 13a where A is CN, D is as defined for
General Formula I provided that the D ring is coupled to the ring
defined by X.sup.1, X.sup.2, X.sup.3 and X.sup.4 through a ring
nitrogen atom in the D ring, X.sup.1, X.sup.2, X.sup.3, X.sup.4 are
as defined for Formula I provided that at least one of X.sup.1 and
X.sup.2 is nitrogen, and B, X.sup.3, X.sup.4, and E is as defined
for General Formula I.
[0467] Compound 2 is obtained by treating MSH reagent with
3-bromo-5-methoxypyridine, which is commercially available. The
aminating reagent O-mesitylsulfonylhydroxylamine (MSH) may be
prepared as described in Mendiola, J., et al., Org. Process Res.
Dev. 2009, 13(2), 263-267. Compound 2 may be reacted with ethyl
propiolate to provide the pyrazolo[1,5-a]pyridine a mixture of
compounds 3A and 3B, which typically are obtained in a ratio of
approximately 2:1 to 9:1. The mixture of compounds 3A and 3B may be
treated with 48% HBr at elevated temperatures, followed by
recrystallization or chromatography purifications to isolate
compound 4A as the minor isomer and compound 4B as the major
isomer.
[0468] The isolated compound 4B may be functionalized with a formyl
group using POCl.sub.3 followed by purification to provide compound
5. The formyl group of compound 5 may be converted to an oxime
group using NH.sub.2OH to provide compound 6. The oxime group of
compound 6 may be converted to a nitrile group using acetic
anhydride to provide compound 7. The B group may be installed by
treating compound 7 with a corresponding boronic ester having the
formula hetAr.sup.1--B(OR.sup.a)(OR.sup.b) where hetAr.sup.1 is as
defined for General Formula I and R.sup.a and R.sup.b are H or
C1-C6 alkyl, or R.sup.a and R.sup.b together with the atoms to
which they are connected form a 5-6 membered ring optionally
substituted with one to four C1-C3 alkyl groups, using appropriate
palladium-catalyzed cross-coupling reaction conditions, e.g.,
Suzuki coupling reaction conditions (for example, a palladium
catalyst and optionally a ligand in the presence of an inorganic
base, for example, Pd.sub.2(dba).sub.3, X-Phos and Na.sub.2CO.sub.3
in dioxane at elevated temperatures) to provide compound 8 where B
is hetAr.sup.1 as defined for General Formula I. The methoxy group
of compound 8 may be converted to a hydroxy group by treating
compound 8 with aluminum trichloride to provide compound 9. The
free hydroxy group of compound 9 may be converted to a triflate
group by treating compound 9 with a triflating reagent, for example
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
to provide compound 10. Compound 12 may be prepared by coupling
compound 10 with the corresponding boronic ester compound 11 where
Z is --B(OR.sup.a)(OR.sup.b) and R.sup.a and R.sup.b are H or C1-C6
alkyl, or R.sup.a and R.sup.b together with the atoms to which they
are connected form a 5-6 membered ring optionally substituted with
one to four C1-C3 alkyl groups, using appropriate
palladium-catalyzed cross-coupling reaction conditions, e.g.,
Suzuki coupling reaction conditions (for example, a palladium
catalyst and optionally a ligand in the presence of an inorganic
base, for example, Pd.sub.2(dba).sub.3, X-Phos and Na.sub.2CO.sub.3
in dioxane at elevated temperatures), wherein if the D ring of
compound 11 comprises an unsubstituted ring nitrogen atom, the
nitrogen atom is protected with an appropriate amine protecting
group prior to coupling. The protecting group if present on the D
ring of compound 12 may be removed under standard conditions (for
example, a Boc protecting group may be removed by treating compound
12 under acidic conditions, e.g., using HCl) to provide compound 13
where E is H. Alternatively, the deprotected D ring may be
functionalized (i.e., reacted or treated with an appropriate
reagent) to introduce the E group under standard conditions such as
described below to provide compound 13 where E is as defined for
General Formula I except that E is not H.
[0469] Alternatively, compound 10 may be coupled with compound 14
using appropriate palladium-catalyzed cross-coupling reaction
conditions, e.g., Suzuki coupling reaction conditions (for example,
a palladium catalyst and optionally a ligand in the presence of an
inorganic base, for example, Pd(PPh.sub.3).sub.4 and
Na.sub.2CO.sub.3) to provide compound 15. Compound 15 may be
reacted with compound 16 under appropriate S.sub.NAr conditions
(for example, optionally in the presence of a base such as
K.sub.2CO.sub.3 and at elevated temperature) to provide compound
12a, wherein if the D ring of compound 16 comprises a second
unsubstituted ring nitrogen atom, the second nitrogen atom is
protected with an appropriate amine protecting group prior to
coupling. The protecting group if present on the D ring of compound
12a may be removed under standard conditions (for example, a Boc
group may be removed by treating compound 12a to acidic conditions,
e.g., HCl) to provide compound 13a where E is H. Alternatively, the
deprotected D ring may be functionalized (i.e., reacted or treated
with an appropriate reagent) to introduce the E group under
standard conditions such as described below to provide compound 13a
where E is as defined for General Formula I except that E is not
H.
##STR00137## ##STR00138##
[0470] Scheme 2 shows an alternative route for the synthesis of
compound 13, wherein A is CN, and B, X.sup.1, X.sup.2, X.sup.3,
X.sup.4, D and E are as defined for General Formula I. Compound 4A
(prepared as in Scheme 1) may be functionalized with a formyl group
using POCl.sub.3 to provide compound 17. The formyl group may be
converted to an oxime group using NH.sub.2OH to provide compound
18. The oxime group may be converted to a nitrile group using
acetic anhydride to provide compound 19. The methoxy group of
compound 19 may be converted to a hydroxy group by treating
compound 19 with aluminum trichloride to provide compound 20.
Compound 21 may be prepared by coupling compound 20 with the
corresponding boronic ester compound 11 where Z is
--B(OR.sup.a)(OR.sup.b) and R.sup.a and R.sup.b are H or C1-C6
alkyl, or R.sup.a and R.sup.b together with the atoms to which they
are connected form a 5-6 membered ring optionally substituted with
one to four C1-C3 alkyl groups, using appropriate
palladium-catalyzed cross-coupling reaction conditions, e.g.,
Suzuki coupling reaction conditions (for example, a palladium
catalyst and optionally a ligand in the presence of an inorganic
base, for example, Pd(PPh.sub.3).sub.4 and Na.sub.2CO.sub.3 in
dioxane at elevated temperatures), wherein if the D ring of
compound 11 comprises an unsubstituted ring nitrogen atom, the
nitrogen atom is protected with an appropriate amine protecting
group prior to coupling. The free hydroxy group of compound 21 may
be converted to a triflate group by treating compound 21 with a
triflating reagent, for example
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
to provide compound 22. The B group may be installed by treating
compound 22 with the corresponding boronic ester having the formula
hetAr.sup.1--B(OR.sup.a)(OR.sup.b) where hetAr.sup.1 is as defined
for General Formula I and R.sup.a and R.sup.b are H or C1-C6 alkyl,
or R.sup.a and R.sup.b together with the atoms to which they are
connected form a 5-6 membered ring optionally substituted with one
to four C1-C3 alkyl groups, using appropriate palladium-catalyzed
cross-coupling reaction conditions, e.g., Suzuki coupling reaction
conditions (for example, a palladium catalyst and optionally a
ligand in the presence of an inorganic base, for example,
Pd.sub.2(dba).sub.3, X-Phos and Na.sub.2CO.sub.3 in dioxane at
elevated temperatures) to provide compound 12 where B is
hetAr.sup.1 as defined for General Formula I. The protecting group
if present on the D ring of compound 12 may be removed under
standard conditions (for example, a Boc group may be removed by
treating compound 12 to acidic conditions, e.g., HCl in
propan-2-ol) to provide compound 13 where E is H. Alternatively,
the deprotected D ring may be functionalized (i.e., reacted or
treated with an appropriate reagent) to introduce the E group under
standard conditions such as described below to provide compound 13
where E is as defined for General Formula I except that E is not
H.
##STR00139##
[0471] Scheme 3 shows a general scheme for the synthesis of
compound 28 where A is Cl, and B, X.sup.1, X.sup.2, X.sup.3,
X.sup.4, D and E are as defined for General Formula I. Compound 4B
(prepared as in Scheme 1) may be chlorinated using
N-chlorosuccinimide to provide compound 23. The B group may be
installed by coupling compound 23 with an appropriate boronic ester
having the formula hetAr.sup.1--B(OR.sup.a)(OR.sup.b) where
hetAr.sup.1 is as defined for General Formula I and R.sup.a and
R.sup.b are H or C1-C6 alkyl, or R.sup.a and R.sup.b together with
the atoms to which they are connected form a 5-6 membered ring
optionally substituted with one to four C1-C3 alkyl groups, under
appropriate palladium-catalyzed cross-coupling reaction conditions,
e.g., Suzuki coupling reaction conditions (for example, a palladium
catalyst and optionally a ligand in the presence of an inorganic
base, for example, Pd(PPh.sub.3).sub.4 and Na.sub.2CO.sub.3 in
dioxane at elevated temperatures) to provide compound 24 where B is
hetAr.sup.1 as defined for General Formula I. The methoxy group of
compound 24 may be converted to a hydroxy group under standard
conditions, for example by treating compound 24 with BBr.sub.3, to
yield compound 25. The free hydroxy group of compound 25 may be
converted to a triflate group by treating compound 25 with an
appropriate triflating reagent in the presence of a base, e.g.,
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfon-
amide and DIEA to provide compound 26. Compound 27 may be prepared
by coupling compound 26 with the corresponding boronic ester
compound 11 where Z is --B(OR.sup.a)(OR.sup.b) and R.sup.a and
R.sup.b are H or C1-C6 alkyl, or R.sup.a and R.sup.b together with
the atoms to which they are connected form a 5-6 membered ring
optionally substituted with one to four C1-C3 alkyl groups, using
under standard coupling conditions, e.g., Suzuki coupling reaction
conditions (for example, a palladium catalyst and optionally a
ligand in the presence of an inorganic base, for example,
Pd(PPh.sub.3).sub.4 and Na.sub.2CO.sub.3 in dioxane at elevated
temperatures), wherein if the D ring of compound 11 comprises an
unsubstituted ring nitrogen atom, the nitrogen atom is protected
with an appropriate amine protecting group prior to coupling. The
protecting group if present on the D ring of compound 27 may be
removed under standard conditions (for example, a Boc group may be
removed by treating compound 27 with acid (e.g., 5-6 N HCl in
propan-2-ol) to provide compound 28 where E is H. Alternatively,
the deprotected D ring may be functionalized (i.e., reacted or
treated with an appropriate reagent) to introduce the E group under
standard conditions such as described below to provide compound 28
where E is as defined for General Formula I except that E is not
H.
##STR00140##
[0472] Scheme 4 shows a general scheme for the synthesis of
compound 33, wherein A is H, and B, X.sup.1, X.sup.2, X.sup.3,
X.sup.4, D and E are as defined for General Formula I. Compound 4B
(prepared as in Scheme 1) may be coupled with an appropriate
boronic ester having the formula hetAr.sup.1--B(OR.sup.a)(OR.sup.b)
where hetAr.sup.1 is as defined for General Formula I and R.sup.a
and R.sup.b are H or C1-C6 alkyl, or R.sup.a and R.sup.b together
with the atoms to which they are connected form a 5-6 membered ring
optionally substituted with one to four C1-C3 alkyl groups, under
appropriate palladium-catalyzed cross-coupling reaction conditions,
e.g., Suzuki coupling reaction conditions (for example, a palladium
catalyst and optionally a ligand in the presence of an inorganic
base, for example, Pd(PPh.sub.3).sub.4 and Na.sub.2CO.sub.3 in
dioxane at elevated temperatures) to install the B group to provide
compound 29 where B is hetAr.sup.1 as defined for General Formula
I. The methoxy group of compound 29 may be converted to a hydroxy
group by treating compound 29 with aluminum trichloride to provide
compound 30. The free hydroxy group of compound 30 may be converted
to a triflate group by treating compound 33 with a triflating
reagent in the presence of a base, e.g.,
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
and DIEA in an appropriate solvent such as THF to provide compound
31. Compound 32 may be prepared by coupling compound 31 with
compound 11 under appropriate palladium-catalyzed cross-coupling
reaction conditions, e.g., Suzuki coupling reaction conditions (for
example, a palladium catalyst and optionally a ligand in the
presence of an inorganic base, for example, Pd(PPh.sub.3).sub.4 and
Na.sub.2CO.sub.3 in dioxane at elevated temperatures), wherein if
the D ring of compound 11 comprises an unsubstituted ring nitrogen
atom, the nitrogen atom is protected with an appropriate amine
protecting group prior to coupling. The protecting group if present
on the D ring of compound 32 may be removed under standard
conditions (for example, a Boc group may be removed by treating
compound 32 under acidic conditions, e.g., HCl in propan-2-ol) to
provide compound 33 where E is H. Alternatively, the deprotected D
ring may be functionalized (i.e., reacted or treated with an
appropriate reagent) to introduce the E group under standard
conditions such as described below to provide compound 33 where E
is as defined for General Formula I except that E is not H.
[0473] The D ring of any one of compounds 13, 13a, 28, and 33
described in Schemes 1-4 may be functionalized (i.e., reacted or
treated with an appropriate reagent) to introduce an E group, where
E is any of the E groups defined for General Formula I with the
exception of hydrogen, using standard chemistry well known to
persons skilled in the art. As used herein, the term
"functionalized" refers to a process step in which a compound of
Formula I where E is hydrogen is reacted or treated with an
appropriate reagent to provide a compound of Formula I where E is
other than hydrogen.
[0474] For example, an amide derivative (e.g., where D is
hetCyc.sup.1 where hetCyc.sup.1 is piperazinyl and E is (C1-C6
alkyl)C(.dbd.O)-- optionally substituted with one to three fluoros;
(hydroxy C1-C6 alkyl)C(.dbd.O)-- optionally substituted with one to
three fluoros; (C1-C6 alkoxy)(C1-C6 alkyl)C(.dbd.O)--;
Cyc.sup.1C(.dbd.O)--; Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)--;
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)--; Ar.sup.2C(.dbd.O)--;
Ar.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H and C1-C6 alkyl or R.sup.e and R.sup.f
together with the nitrogen to which they are attached form a 5-6
membered azacyclic ring optionally having an additional ring
heteroatom selected from N and O; hetAr.sup.2C(.dbd.O)--; or
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)-- wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl) or R.sup.e and R.sup.f
together with the nitrogen to which they are attached form a 5-6
membered azacyclic ring optionally having an additional ring
heteroatom selected from N and O, may be obtained by treating
compound 13 having a deprotected amino D ring with an carboxylic
acid (e.g., with an acid having the formula (C1-C6
alkyl)C(.dbd.O)OH optionally substituted with one to three fluoros;
(hydroxy C1-C6 alkyl)C(.dbd.O)OH optionally substituted with one to
three fluoros; (C1-C6 alkoxy)(C1-C6 alkyl)C(.dbd.O)OH;
Cyc.sup.1C(.dbd.O)OH; Cyc.sup.1(C1-C6 alkyl)C(.dbd.O)OH;
hetCyc.sup.4(C1-C3 alkyl)C(.dbd.O)OH; Ar.sup.2C(.dbd.O)OH;
Ar.sup.2(C1-C3 alkyl)C(.dbd.O)OH wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H and C1-C6 alkyl or R.sup.e and R.sup.f
together with the nitrogen to which they are attached form a 5-6
membered azacyclic ring optionally having an additional ring
heteroatom selected from N and O; hetAr.sup.2C(.dbd.O)OH; or
hetAr.sup.2(C1-C3 alkyl)C(.dbd.O)OH wherein the alkyl portion is
optionally substituted with one or two groups independently
selected from the group consisting of OH, C1-C6 alkyl, hydroxyC1-C6
alkyl, C1-C6 alkoxy and R.sup.eR.sup.fN--, where R.sup.e and
R.sup.f are independently H or C1-C6 alkyl) or R.sup.e and R.sup.f
together with the nitrogen to which they are attached form a 5-6
membered azacyclic ring optionally having an additional ring
heteroatom selected from N and O) using conventional amide bond
formation conditions, for example by treating the carboxylic acid
with an activating agent (e.g., HATU), followed by addition of the
compound 13 having a deprotected amino D ring in the presence of a
base (e.g., an amine base such as DIEA) in an appropriate solvent
(such as DMA) to provide a functionalized compound 13. The same
chemistry may be utilized with compounds 13a, 28 and 33 to prepare
functionalized compounds 13a, 28 and 33, respectively.
[0475] As another example, a urea derivative (e.g., where D is
hetCyc.sup.1 where hetCyc.sup.1 is piperazinyl and E is
hetCyc.sup.4C(.dbd.O)-- or R.sup.1R.sup.2NC(.dbd.O)--) may be
prepared by first activating a ring nitrogen in the D ring of
compound 13 with triphosgene in the presence of DIEA and in a
solvent such as DCM, followed by addition of a primary or secondary
amine reagent (e.g., a reagent having the formula
hetCyc.sup.4NH.sub.2 or R.sup.1R.sup.2NH) to provide a
functionalized compound 13. The same chemistry may be utilized with
compounds 13a, 28 and 33 to prepare functionalized compounds 13a,
28 and 33, respectively.
[0476] As another example, an N-alkyl derivative (e.g., where D is
hetCyc.sup.1 where hetCyc.sup.1 is piperazinyl and E is
hydroxyC1-C6 alkyl optionally substituted with one to three
fluoros; (C1-C6 alkoxy)hydroxy C1-C6 alkyl; Ar.sup.2C1-C6 alkyl;
(Ar.sup.2)hydroxy C2-C6 alkyl; or (hetAr.sup.2)hydroxyC2-C6 alkyl,
may be prepared by treating compound 13 where E is H with an alkyl
bromide or alkyl chloride (e.g., hydroxyC1-C6 alkyl-X optionally
substituted with one to three fluoros; (C1-C6 alkoxy)hydroxy C1-C6
alkyl-X; Ar.sup.2C1-C6 alkyl-X; (Ar.sup.2)hydroxy C2-C6 alkyl-X; or
(hetAr.sup.2)hydroxyC2-C6 alkyl-X where X is Br or Cl) or an
epoxide in the presence of a base such as DIEA in a solvent at
ambient or elevated temperatures) to provide a functionalized
compound 13. The same chemistry may be utilized with compounds 13a,
28 and 33 to prepare functionalized compounds 13a, 28 and 33,
respectively.
[0477] As another example, a compound of Formula I wherein D is
hetCyc.sup.1 (where hetCyc.sup.1 is a 4-6 membered heterocyclic
ring having 2 ring nitrogen atoms, wherein the heterocyclic ring is
optionally substituted with one or more substituents independently
selected from the group consisting of C1-C3 alkyl, fluoroC1-C3
alkyl, difluoroC1-C3 alkyl, trifluoroC1-C3 alkyl and OH, or said
heterocyclic ring is substituted with a C3-C6 cycloalkylidene ring,
or said heterocyclic ring is substituted with an oxo group) and E
is Ar.sup.2C1-C6 alkyl, hetAr.sup.2C1-C6 alkyl, (hetCyc.sup.4)C1-C6
alkyl, or (C3-C6 cycloalkoxy)C1-C6 alkyl, may be prepared by
treating compound 13 where E is H (wherein E is on a ring nitrogen
atom of hetCyc.sup.1) with an appropriate aldehyde having the
formula Ar.sup.2(C1-C5 alkyl)C(.dbd.O)H, hetAr.sup.2(C1-C5
alkyl)C(.dbd.O)H, (hetCyc.sup.4)(C1-C5 alkyl)C(.dbd.O)H, or (C3-C6
cycloalkoxy)(C1-C5 alkyl)C(.dbd.O)H under standard reductive
amination reaction conditions, for example in the presence of a
base and a reducing agent, for example in the presence of a
reducing agent such as sodium triacetoxyborohydride or sodium
cyanoborohydride.
[0478] As another example, a sulfonamide derivative may be prepared
by treating compound 13 where E is H with an appropriate sulfonyl
chloride in the presence of a base, such as an amine base (such as
triethylamine) in an appropriate solvent to provide a
functionalized compound 13. The same chemistry may be utilized with
compounds 13a, 28 and 33 to prepare functionalized compounds 13a,
28 and 33, respectively.
[0479] Further provided herein is a process for preparing of a
compound of General Formula I or a pharmaceutically acceptable salt
thereof as defined herein which comprises:
[0480] (a) for a compound of General Formula I where E is H and A,
B, X.sup.1, X.sup.2, X.sup.3, X.sup.4, and D are as defined for
General Formula I, coupling a corresponding compound having the
formula
##STR00141##
[0481] where A and B are as defined for General Formula I, with a
corresponding compound having the formula 11
##STR00142##
[0482] in the presence of a palladium catalyst and optionally a
ligand and in the presence of a base, where Z is
--B(OR.sup.a)(OR.sup.b) and R.sup.a and R.sup.b are H or
(1-6C)alkyl, or R.sup.a and R.sup.b together with the atoms to
which they are connected form a 5-6 membered ring optionally
substituted with 1-4 substituents selected from (C1-C3 alkyl),
the
##STR00143##
ring is as defined for hetCyc.sup.1, hetCyc.sup.2 and hetCyc.sup.3
of Formula I, and X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are as
defined for General Formula I, followed by removal of a protecting
group on the D ring if present; or
[0483] (b) for a compound of General Formula I where A, B, X.sup.1,
X.sup.2, X.sup.3, X.sup.4, D and E are as defined for General
Formula I with the exception that E is not hydrogen,
functionalizing a corresponding compound having the formula
##STR00144##
[0484] wherein the
##STR00145##
moiety is as defined for hetCyc.sup.1, hetCyc.sup.2 and
hetCyc.sup.3 of Formula I, and A, B, X.sup.1, X.sup.2, X.sup.3 and
X.sup.4 are as defined for General Formula I; or
[0485] (c) for a compound of General Formula I where A is CN, D is
as defined for General Formula I provided that the D ring is
coupled to the ring defined by X.sup.1, X.sup.2, X.sup.3 and
X.sup.4 through a ring nitrogen atom in the D ring, X.sup.1,
X.sup.2, X.sup.3, X.sup.4 are as defined for Formula I provided
that at least one of X.sup.1 and X.sup.2 is nitrogen, and E is as
defined for General Formula I, reacting a corresponding compound
having the formula 15
##STR00146##
[0486] where B, X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are as
defined for General Formula I provided that at least one of X.sup.1
and X.sup.2 is nitrogen, with a corresponding compound having the
formula 17
##STR00147##
[0487] in the presence of a base, wherein the
##STR00148##
ring is as defined for hetCyc.sup.1, hetCyc.sup.2 and hetCyc.sup.3
of Formula I; or
[0488] (d) for a compound of General Formula I where A is CN, E is
H, and B, X.sup.1, X.sup.2, X.sup.3, X.sup.4, and D are as defined
for General Formula I, reacting a compound having the formula
22
##STR00149##
[0489] where X.sup.1, X.sup.2, X.sup.3, X.sup.4 and D are as
defined for General Formula I, with a corresponding boronic ester
having the formula
##STR00150##
[0490] where hetAr.sup.1 is as defined for General Formula I and
R.sup.a and R.sup.b are H or CC6 alkyl, or R.sup.a and R.sup.b
together with the atoms to which they are connected form a 5-6
membered ring optionally substituted with one to four C1-C3 alkyl
substituents, in the presence of a palladium catalyst and
optionally a ligand and in the presence of a base; and
[0491] removing any protecting groups and optionally forming a
pharmaceutically acceptable salt thereof.
[0492] Referring to processes (a) and (d), suitable palladium
catalysts include Pd(PPh.sub.3).sub.4, Pd.sub.2(dba).sub.3,
Pd(OAc).sub.2, and Pd(PPh.sub.3).sub.2Cl.sub.2. Suitable ligands
include X-PHOS
(2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl), DIPHOS
(1,2-Bis(diphenylphosphino)ethane) or rac-BINAP
(racemic-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl). The base may
be, for example, an alkali metal carbonate, hydroxide, alkoxide or
acetate, such as for example cesium carbonate, sodium carbonate,
potassium carbonate, sodium hydroxide, sodium tert-butoxide or
potassium acetate. Convenient solvents include aprotic solvents
such as ethers (for example tetrahydrofuran or p-dioxane), toluene,
DMF or DME. The reaction can be conveniently performed at a
temperature ranging from ambient temperature to 120.degree. C., for
example from 80 to 110.degree. C.
[0493] The ability of test compounds to act as RET inhibitors may
be demonstrated by the assay described in Example A. IC.sub.50's
are shown in Table 5.
[0494] Compounds of General Formula I have been found to be
inhibitors of a RET kinase, and are useful for treating diseases
and disorders which can be treated with a RET kinase inhibitor,
such as RET-associated diseases and disorders, e.g., proliferative
disorders such as cancers, including hematological cancers and
solid tumors, and gastrointestinal disorders such as IBS.
[0495] As used herein, terms "treat" or "treatment" refer to
therapeutic or palliative measures. Beneficial or desired clinical
results include, but are not limited to, alleviation, in whole or
in part, of symptoms associated with a disease or disorder or
condition, diminishment of the extent of disease, stabilized (i.e.,
not worsening) state of disease, delay or slowing of disease
progression, amelioration or palliation of the disease state (e.g.,
one or more symptoms of the disease), and remission (whether
partial or total), whether detectable or undetectable. "Treatment"
can also mean prolonging survival as compared to expected survival
if not receiving treatment.
[0496] As used herein, the term "subject," "individual," or
"patient," used interchangeably, refers to any animal, including
mammals such as mice, rats, other rodents, rabbits, dogs, cats,
swine, cattle, sheep, horses, primates, and humans. In some
embodiments, the patient is a human. In some embodiments, the
subject has experienced and/or exhibited at least one symptom of
the disease or disorder to be treated and/or prevented. In some
embodiments, the subject has been identified or diagnosed as having
a cancer with dysregulation of a RET gene, a RET protein, or
expression or activity, or level of any of the same (a
RET-associated cancer) (e.g., as determined using a regulatory
agency-approved, e.g., FDA-approved, assay or kit). In some
embodiments, the subject has a tumor that is positive for
dysregulation of a RET gene, a RET protein, or expression or
activity, or level of any of the same (e.g., as determined using a
regulatory agency-approved assay or kit). The subject can be a
subject with a tumor(s) that is positive for dysregulation of a RET
gene, a RET protein, or expression or activity, or level of any of
the same (e.g., identified as positive using a regulatory
agency-approved, e.g., FDA-approved, assay or kit). The subject can
be a subject whose tumors have dysregulation of a RET gene, a RET
protein, or expression or activity, or a level of the same (e.g.,
where the tumor is identified as such using a regulatory
agency-approved, e.g., FDA-approved, kit or assay). In some
embodiments, the subject is suspected of having a RET-associated
cancer. In some embodiments, the subject has a clinical record
indicating that the subject has a tumor that has dysregulation of a
RET gene, a RET protein, or expression or activity, or level of any
of the same (and optionally the clinical record indicates that the
subject should be treated with any of the compositions provided
herein). In some embodiments, the patient is a pediatric
patient.
[0497] The term "pediatric patient" as used herein refers to a
patient under the age of 21 years at the time of diagnosis or
treatment. The term "pediatric" can be further be divided into
various subpopulations including: neonates (from birth through the
first month of life); infants (1 month up to two years of age);
children (two years of age up to 12 years of age); and adolescents
(12 years of age through 21 years of age (up to, but not including,
the twenty-second birthday)). Berhman R E, Kliegman R, Arvin A M,
Nelson W E. Nelson Textbook of Pediatrics, 15th Ed. Philadelphia:
W.B. Saunders Company, 1996; Rudolph A M, et al. Rudolph's
Pediatrics, 21st Ed. New York: McGraw-Hill, 2002; and Avery M D,
First L R. Pediatric Medicine, 2nd Ed. Baltimore: Williams &
Wilkins; 1994. In some embodiments, a pediatric patient is from
birth through the first 28 days of life, from 29 days of age to
less than two years of age, from two years of age to less than 12
years of age, or 12 years of age through 21 years of age (up to,
but not including, the twenty-second birthday). In some
embodiments, a pediatric patient is from birth through the first 28
days of life, from 29 days of age to less than 1 year of age, from
one month of age to less than four months of age, from three months
of age to less than seven months of age, from six months of age to
less than 1 year of age, from 1 year of age to less than 2 years of
age, from 2 years of age to less than 3 years of age, from 2 years
of age to less than seven years of age, from 3 years of age to less
than 5 years of age, from 5 years of age to less than 10 years of
age, from 6 years of age to less than 13 years of age, from 10
years of age to less than 15 years of age, or from 15 years of age
to less than 22 years of age.
[0498] In certain embodiments, compounds of General Formula I are
useful for preventing diseases and disorders as defined herein (for
example, autoimmune diseases, inflammatory diseases, and cancer).
The term "preventing" as used herein means the prevention of the
onset, recurrence or spread, in whole or in part, of the disease or
condition as described herein, or a symptom thereof.
[0499] The term "RET-associated disease or disorder" as used herein
refers to diseases or disorders associated with or having a
dysregulation of a RET gene, a RET kinase (also called herein RET
kinase protein or RET kinase), or the expression or activity or
level of any (e.g., one or more) of the same (e.g., any of the
types of dysregulation of a RET gene, a RET kinase, a RET kinase
domain, or the expression or activity or level of any of the same
described herein). Non-limiting examples of a RET-associated
disease or disorder include, for example, cancer and
gastrointestinal disorders such as irritable bowel syndrome
(IBS).
[0500] The term "RET-associated cancer" as used herein refers to
cancers associated with or having a dysregulation of a RET gene, a
RET kinase (also called herein RET kinase protein or RET kinase),
or expression or activity, or level of any of the same.
Non-limiting examples of a RET-associated cancer are described
herein.
[0501] The phrase "dysregulation of a RET gene, a RET kinase, or
the expression or activity or level of any of the same" refers to a
genetic mutation (e.g., a RET gene translocation that results in
the expression of a fusion protein, a deletion in a RET gene that
results in the expression of a RET protein that includes a deletion
of at least one amino acid as compared to the wild-type RET
protein, or a mutation in a RET gene that results in the expression
of a RET protein with one or more point mutations, or an
alternative spliced version of a RET mRNA that results in a RET
protein that results in the deletion of at least one amino acid in
the RET protein as compared to the wild-type RET protein), or a RET
gene amplification that results in overexpression of a RET protein
or an autocrine activity resulting from the overexpression of a RET
gene a cell, that results in a pathogenic increase in the activity
of a kinase domain of a RET protein (e.g., a constitutively active
kinase domain of a RET protein) in a cell. As another example, a
dysregulation of a RET gene, a RET protein, or expression or
activity, or level of any of the same, can be a mutation in a RET
gene that encodes a RET protein that is constitutively active or
has increased activity as compared to a protein encoded by a RET
gene that does not include the mutation. For example, a
dysregulation of a RET gene, a RET protein, or expression or
activity, or level of any of the same, can be the result of a gene
or chromosome translocation which results in the expression of a
fusion protein that contains a first portion of RET that includes a
functional kinase domain, and a second portion of a partner protein
(i.e., that is not RET). In some examples, dysregulation of a RET
gene, a RET protein, or expression or activity, can be a result of
a gene translation of one RET gene with another RET gene.
Non-limiting examples of fusion proteins are described in Table 1.
Non-limiting examples of RET kinase protein point
mutations/insertions are described in Table 2. Additional examples
of RET kinase protein point mutations are RET inhibitor resistance
mutations. Non-limiting examples of RET inhibitor resistance
mutations are described in Tables 3 and 4.
[0502] The term "wildtype" or "wild-type" describes a nucleic acid
(e.g., a RET gene or a RET mRNA) or protein (e.g., a RET protein)
that is found in a subject that does not have a RET-associated
disease, e.g., a RET-associated cancer (and optionally also does
not have an increased risk of developing a RET-associated disease
and/or is not suspected of having a RET-associated disease), or is
found in a cell or tissue from a subject that does not have a
RET-associated disease, e.g., a RET-associated cancer (and
optionally also does not have an increased risk of developing a
RET-associated disease and/or is not suspected of having a
RET-associated disease).
[0503] The term "regulatory agency" refers to a country's agency
for the approval of the medical use of pharmaceutical agents with
the country. For example, a non-limiting example of a regulatory
agency is the U.S. Food and Drug Administration (FDA).
[0504] Provided herein is a method of treating cancer (e.g., a
RET-associated cancer) in a patient in need of such treatment, the
method comprising administering to the patient a therapeutically
effective amount of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof.
[0505] In some embodiments of any of the methods or uses described
herein, the cancer (e.g., RET-associated cancer) is a hematological
cancer. In some embodiments of any of the methods or uses described
herein, the cancer (e.g., RET-associated cancer) is a solid tumor.
In some embodiments of any of the methods or uses described herein,
the cancer (e.g., RET-associated cancer) is lung cancer (e.g.,
small cell lung carcinoma or non-small cell lung carcinoma),
papillary thyroid cancer, medullary thyroid cancer, differentiated
thyroid cancer, recurrent thyroid cancer, refractory differentiated
thyroid cancer, lung adenocarcinoma, bronchioles lung cell
carcinoma, multiple endocrine neoplasia type 2A or 2B (MEN2A or
MEN2B, respectively), pheochromocytoma, parathyroid hyperplasia,
breast cancer, colorectal cancer (e.g., metastatic colorectal
cancer), papillary renal cell carcinoma, ganglioneuromatosis of the
gastroenteric mucosa, inflammatory myofibroblastic tumor, or
cervical cancer. In some embodiments of any of the methods or uses
described herein, the cancer (e.g., RET-associated cancer) is
selected from the group of: acute lymphoblastic leukemia (ALL),
acute myeloid leukemia (AML), cancer in adolescents, adrenocortical
carcinoma, anal cancer, appendix cancer, astrocytoma, atypical
teratoid/rhabdoid tumor, basal cell carcinoma, bile duct cancer,
bladder cancer, bone cancer, brain stem glioma, brain tumor, breast
cancer, bronchial tumor, Burkitt lymphoma, carcinoid tumor, unknown
primary carcinoma, cardiac tumors, cervical cancer, childhood
cancers, chordoma, chronic lymphocytic leukemia (CLL), chronic
myelogenous leukemia (CML), chronic myeloproliferative neoplasms,
colon cancer, colorectal cancer, craniopharyngioma, cutaneous
T-cell lymphoma, bile duct cancer, ductal carcinoma in situ,
embryonal tumors, endometrial cancer, ependymoma, esophageal
cancer, esthesioneuroblastoma, Ewing sarcoma, extracranial germ
cell tumor, extragonadal germ cell tumor, extrahepatic bile duct
cancer, eye cancer, fallopian tube cancer, fibrous histiocytoma of
bone, gallbladder cancer, gastric cancer, gastrointestinal
carcinoid tumor, gastrointestinal stromal tumors (GIST), germ cell
tumor, gestational trophoblastic disease, glioma, hairy cell tumor,
hairy cell leukemia, head and neck cancer, heart cancer,
hepatocellular cancer, histiocytosis, Hodgkin's lymphoma,
hypopharyngeal cancer, intraocular melanoma, islet cell tumors,
pancreatic neuroendocrine tumors, Kaposi sarcoma, kidney cancer,
Langerhans cell histiocytosis, laryngeal cancer, leukemia, lip and
oral cavity cancer, liver cancer, lung cancer, lymphoma,
macroglobulinemia, malignant fibrous histiocytoma of bone,
osteocarcinoma, melanoma, Merkel cell carcinoma, mesothelioma,
metastatic squamous neck cancer, midline tract carcinoma, mouth
cancer, multiple endocrine neoplasia syndromes, multiple myeloma,
mycosis fungoides, myelodysplastic syndromes,
myelodysplastic/myeloproliferative neoplasms, myelogenous leukemia,
myeloid leukemia, multiple myeloma, myeloproliferative neoplasms,
nasal cavity and paranasal sinus cancer, nasopharyngeal cancer,
neuroblastoma, non-Hodgkin's lymphoma, non-small cell lung cancer,
oral cancer, oral cavity cancer, lip cancer, oropharyngeal cancer,
osteosarcoma, ovarian cancer, pancreatic cancer, papillomatosis,
paraganglioma, paranasal sinus and nasal cavity cancer, parathyroid
cancer, penile cancer, pharyngeal cancer, pheochromosytoma,
pituitary cancer, plasma cell neoplasm, pleuropulmonary blastoma,
pregnancy and breast cancer, primary central nervous system
lymphoma, primary peritoneal cancer, prostate cancer, rectal
cancer, renal cell cancer, retinoblastoma, rhabdomyosarcoma,
salivary gland cancer, sarcoma, Sezary syndrome, skin cancer, small
cell lung cancer, small intestine cancer, soft tissue sarcoma,
squamous cell carcinoma, squamous neck cancer, stomach cancer,
T-cell lymphoma, testicular cancer, throat cancer, thymoma and
thymic carcinoma, thyroid cancer, transitional cell cancer of the
renal pelvis and ureter, unknown primary carcinoma, urethral
cancer, uterine cancer, uterine sarcoma, vaginal cancer, vulvar
cancer, and Wilms' tumor.
[0506] In some embodiments, a hematological cancer (e.g.,
hematological cancers that are RET-associated cancers) is selected
from the group consisting of leukemias, lymphomas (non-Hodgkin's
lymphoma), Hodgkin's disease (also called Hodgkin's lymphoma), and
myeloma, for instance, acute lymphocytic leukemia (ALL), acute
myeloid leukemia (AML), acute promyelocytic leukemia (APL), chronic
lymphocytic leukemia (CLL), chronic myeloid leukemia (CML), chronic
myelomonocytic leukemia (CMML), chronic neutrophilic leukemia
(CNL), acute undifferentiated leukemia (AUL), anaplastic large-cell
lymphoma (ALCL), prolymphocytic leukemia (PML), juvenile
myelomonocyctic leukemia (JMML), adult T-cell ALL, AML with
trilineage myelodysplasia (AML/TMDS), mixed lineage leukemia (MLL),
myelodysplastic syndromes (MDSs), myeloproliferative disorders
(MPD), and multiple myeloma (MM). Additional examples of
hematological cancers include myeloproliferative disorders (MPD)
such as polycythemia vera (PV), essential thrombocytopenia (ET) and
idiopathic primary myelofibrosis (IMF/IPF/PMF). In one embodiment,
the hematological cancer (e.g., the hematological cancer that is a
RET-associated cancer) is AML or CMML.
[0507] In some embodiments, the cancer (e.g., the RET-associated
cancer) is a solid tumor. Examples of solid tumors (e.g., solid
tumors that are RET-associated cancers) include, for example,
thyroid cancer (e.g., papillary thyroid carcinoma, medullary
thyroid carcinoma), lung cancer (e.g., lung adenocarcinoma,
small-cell lung carcinoma), pancreatic cancer, pancreatic ductal
carcinoma, breast cancer, colon cancer, colorectal cancer, prostate
cancer, renal cell carcinoma, head and neck tumors, neuroblastoma,
and melanoma. See, for example, Nature Reviews Cancer, 2014, 14,
173-186.
[0508] In some embodiments, the cancer is selected from the group
consisting of lung cancer, papillary thyroid cancer, medullary
thyroid cancer, differentiated thyroid cancer, recurrent thyroid
cancer, refractory differentiated thyroid cancer, multiple
endocrine neoplasia type 2A or 2B (MEN2A or MEN2B, respectively),
pheochromocytoma, parathyroid hyperplasia, breast cancer,
colorectal cancer, papillary renal cell carcinoma,
ganglioneuromatosis of the gastroenteric mucosa, and cervical
cancer.
[0509] In some embodiments, the patient is a human.
[0510] Compounds of General Formula I and pharmaceutically
acceptable salts and solvates thereof are also useful for treating
a RET-associated cancer.
[0511] Accordingly, also provided herein is a method for treating a
patient diagnosed with or identified as having a RET-associated
cancer, e.g., any of the exemplary RET-associated cancers disclosed
herein, comprising administering to the patient a therapeutically
effective amount of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, or a
pharmaceutical composition thereof as defined herein.
[0512] Dysregulation of a RET kinase, a RET gene, or the expression
or activity or level of any (e.g., one or more) of the same can
contribute to tumorigenesis. For example, a dysregulation of a RET
kinase, a RET gene, or expression or activity or level of any of
the same can be a translocation, overexpression, activation,
amplification, or mutation of a RET kinase, a RET gene, or a RET
kinase domain. Translocation can include translocations involving
the RET kinase domain, mutations can include mutations involving
the RET ligand-binding site, and amplification can be of a RET
gene. Other dysregulations can include RET mRNA splice variants and
RET autocrine/paracrine signaling, which can also contribute to
tumorigenesis.
[0513] In some embodiments, the dysregulation in a RET gene, a RET
kinase, or expression or activity or level of any of the same,
includes overexpression of wild-type RET kinase (e.g., leading to
autocrine activation). In some embodiments, the dysregulation in a
RET gene, a RET kinase protein, or expression or activity or level
of any of the same, includes overexpression, activation,
amplification, or mutation in a chromosomal segment comprising the
RET gene or a portion thereof, including for example the kinase
domain portion, or a portion capable of exhibiting kinase
activity.
[0514] In some embodiments, the dysregulation of a RET gene, a RET
kinase protein, or expression or activity or level of any of the
same, includes one or more chromosome translocations or inversions
resulting in a RET gene fusions. In some embodiments, the
dysregulation of a RET gene, a RET kinase protein, or expression or
activity or level of any of the same, is a result of genetic
translocations in which the expressed protein is a fusion protein
containing residues from a non-RET partner protein, and includes a
minimum of a functional RET kinase domain.
[0515] Non-limiting examples of RET fusion proteins are shown in
Table 1.
TABLE-US-00001 TABLE 1 Exemplary RET Fusion Partners and Cancers
Non-limiting Exemplary RET- Fusion Partner Associated Cancer(s) BCR
Chronic Myelomonocytic Leukemia (CMML) CLIP1 Adenocarcinoma KIF5B
NSCLC, Ovarian Cancer, Spitzoid Neoplasms; Lung
Adenocarcinoma.sup.3, 4, 14; Adenosquamous Carcinomas.sup.15 CCDC6
(also NSCLC, Colon Cancer, called PTC1, Papillary Thyroid Cancer;
D10S170, or H4) Adenocarcinomas; Lung Adenocarcinoma; Metastatic
Colorectal Cancer.sup.5; Adenosquamous Carcinomas.sup.15 PTC1ex9
Metastatic papillary thyroid cancer.sup.2 NCOA4 (also Papillary
Thyroid Cancer, called PTC3, NSCLC, Colon Cancer, ELE1, and RFG)
Salivary Gland Cancer, Metastatic Colorectal Cancer.sup.5; Lung
Adenocarcinoma.sup.15; Adenosquamous Carcinomas.sup.15 Diffuse
Sclerosing Variant of Papillary Thyroid Cancer.sup.16 TRIM33 (also
NSCLC, Papillary Thyroid called PTC7 and Cancer RFG7) ERC1 (also
called Papillary Thyroid Cancer, ELKS) Breast Cancer FGFR1OP CMML,
Primary Myelofibrosis with secondary Acute Myeloid Leukemia
MBD1(also known Papillary Thyroid Cancer as PCM1) RAB61P2 Papillary
Thyroid Cancer PRKAR1A (also Papillary Thyroid Cancer called PTC2)
TRIM24 (also Papillary Thyroid Cancer called PTC6) KTN1 (also
called Papillary Thyroid Cancer PTC8 ) GOLGA5 (also Papillary
Thyroid Cancer, called PTC5) Spitzoid Neoplasms HOOK3 Papillary
Thyroid Cancer KIAA1468 (also Papillary Thyroid Cancer, called PTC9
and Lung Adenocarcinoma.sup.8 RFG9) TRIM27 (also Papillary Thyroid
Cancer called RFP) AKAP13 Papillary Thyroid Cancer FKBP15 Papillary
Thyroid Cancer SPECC1L Papillary Thyroid Cancer; Thyroid Gland
Carcinoma TBL1XR1 Papillary Thyroid Cancer; Thyroid Gland Carcinoma
CEP55 Diffuse Gastric Cancer.sup.7 CUX1 Lung Adenocarcinoma
KIAA1468 Lung Adenocarcinoma.sup.12 ACBD5 Papillary Thyroid
Carcinoma MYH13 Medullary Thyroid Carcinoma.sup.1 Uncharacterized
Inflammatory Myofibroblastic Tumor.sup.6 PIBF1 Bronchiolus Lung
Cell Carcinoma.sup.9 KIAA1217 Papillary Thyroid Cancer.sup.10, 13
Lung Adenocarcinoma.sup.14 NSCLC.sup.14 MPRIP NSCLC.sup.11 2015.
.sup.1Grubbs et al., J. Clin. Endocrinol. Metab. 100:788-793, 2015.
.sup.2Halkova et al., Human Pathology 46:1962-1969, 2015.
.sup.3U.S. Pat. No. 9,297,011 .sup.4U.S. Pat. No. 9,2161,72
.sup.5Le Rolle et al., Oncotarget. 6(30):28929-37, 2015.
.sup.6Antonescu et al., Am J Surg Pathol. 39(7):957-67, 2015.
.sup.7U.S. Patent Application Publication No. 2015/0177246.
.sup.8U.S. Patent Application Publication No. 2015/0057335.
.sup.9Japanese Patent Application Publication No. 2015/109806A.
.sup.10Chinese Patent Application Publication No. 105255927A.
.sup.11Fang, et al. Journal of Thoracic Oncology 11.2 (2016):
S21-S22. .sup.12European Patent Application Publication No.
EP3037547A1. .sup.13Lee et al., Oncotarget. DOI:
10.18632/oncotarget.9137, e-published ahed of printing, 2016.
.sup.14Saito et al., Cancer Science 107:713-720, 2016.
.sup.15Pirker et al., Transl. Lung Cancer Res. 4(6):797-800, 2015
.sup.16Joung et al., Histopathology 69(1):45-53, 2016
[0516] In some embodiments, the dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same,
includes one or more deletions (e.g., deletion of an amino acid at
position 4), insertions, or point mutation(s) in a RET kinase. In
some embodiments, the dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same, includes a
deletion of one or more residues from the RET kinase, resulting in
constitutive activity of the RET kinase domain.
[0517] In some embodiments, the dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same,
includes at least one point mutation in a RET gene that results in
the production of a RET kinase that has one or more amino acid
substitutions as compared to the wild-type RET kinase (see, for
example, the missense point mutations listed in Table 2).
TABLE-US-00002 TABLE 2 Activating RET Kinase Protein Point
Mutations/Insertions/Deletions Exemplary RET Point Mutations Amino
acid position 2 Amino acid position 3 Amino acid position 4 Amino
acid position 5 Amino acid position 6 Amino acid position 7 Amino
acid position 8 Amino acid position 11 Amino acid position 12 Amino
acid position 13 Amino acid position 20 Amino acid position 32
(e.g., S32L) Amino acid position 34 (e.g., D34S) Amino acid
position 40 (e.g., L40P) Amino acid position 64 (e.g., P64L) Amino
acid position 67 (e.g., R67H) Amino acid position 114 (e.g., R114H)
Amino acid position 136 (e.g., glutamic acid to stop codon) Amino
acid position 145 (e.g., V145G) Amino acid position 180 (e.g.,
arginine to stop codon) Amino acid position 200 Amino acid position
292 (e.g., V292M) Amino acid position 294 Amino acid position 321
(e.g., G321R) Amino acid position 330 (e.g., R330Q) Amino acid
position 338 (e.g., T338I) Amino acid position 360 (e.g., R360W)
Amino acid position 373 (e.g., alanine to frameshift) Amino acid
position 393 (e.g., F393L) Amino acid position 432 .DELTA. Amino
acid residues 505-506 (6-Base Pair In-Frame Germline Deletion in
Exon 7).sup.3 Amino acid position 510 (e.g., A510V) Amino acid
position 511 (e.g., E511K) Amino acid position 513 (e.g.,
A513D).sup.7* Amino acid position 515 (e.g., C515S, C515W.sup.4)
Amino acid position 525 (e.g., R525W).sup.7* Amino acid position
531 (e.g., C531R, or 9 base pair duplication.sup.2) Amino acid
position 532 (e.g., duplication).sup.2 Amino acid position 533
(e.g., G533C.sup.12, G533S) Amino acid position 550 (e.g., G550E)
Amino acid position 591 (e.g., V591I) Amino acid position 593
(e.g., G593E) Amino acid position 600 (e.g., R600Q) Amino acid
position 602 (e.g., I602V).sup.6 Amino acid position 603 (e.g.,
K603Q, K603E.sup.2) Amino acid position 606 (e.g., Y606C) Amino
acid position 609 (e.g., C609Y, C609S, C609G, C609R, C609F, C609W)
Amino acid position 611 (e.g., C611R, C611S, C611G, C611Y, C611F,
C611W) Amino acid position 618 (e.g., C618S, C618Y, C618R, C618Y,
C618G, C618F, C618W) Amino acid position 619 (e.g., F619F) Amino
acid position 620 (e.g., C620S, C620W, C620R, C620G, C620L, C620Y,
C620F) Amino acid position 623 (e.g., E623K) Amino acid position
624 (e.g., D624N) Amino acid position 630 (e.g., C630A, C630R,
C630S, C630Y, C630F) Amino acid position 631 (e.g., D631N, D631Y,
D631A, D631G, D631V, D631E, ) Amino acid position 632 (e.g., E632K,
E632G.sup.5, 11) .DELTA. Amino acid residues 632-633 (6-Base Pair
In-Frame Germline Deletion in Exon 11).sup.9 Amino acid position
633 (e.g., 9 base pair duplication.sup.2) Amino acid position 634
(e.g., C634W, C634Y, C634S, C634R, C634F, C634G, C634L, C634A, or
C634T, or an insertion ELCR.sup.2, or a 12 base pair
duplication.sup.2) (e.g., causing MTC) Amino acid position 635
(e.g., R635G) Amino acid position 636 (e.g., T636P.sup.2,
T636M.sup.4) Amino acid position 640 (e.g., A640G) Amino acid
position 641 (e.g., A641S, A641T.sup.8) Amino acid position 648
(e.g., V648I) Amino acid position 649 (e.g., S649L) Amin acid
position 664 (e.g., A664D) Amino acid position 665 (e.g., H665Q)
Amino acid position 666 (e.g., K666E, K666M, K666N) Amino acid
position 686 (e.g., S686N) Amino acid position 691 (e.g., G691S)
Amino acid position 694 (e.g., R694Q) Amino acid position 700
(e.g., M700L) Amino acid position 706 (e.g., V706M, V706A) Amino
acid position 713 splice variant (e.g., E713K).sup.6 Amino acid
position 736 (e.g., G736R).sup.6 Amino acid position 748 (e.g.,
G748C) Amino acid position 750 (e.g., A750P) Amino acid position
765 (e.g., S765P) Amino acid position 766 (e.g., P766S,
P766M.sup.6) Amino acid position 768 (e.g., E768Q, E768D) Amino
acid position 769 (e.g., L769L) Amino acid position 770 (e.g.,
R770Q) Amino acid position 771 (e.g., D771N) Amino acid position
777 (e.g., N777S) Amino acid position 778 (e.g., V778I) Amino acid
position 781 (e.g., Q781R) Amino acid position 790 (e.g., L790F)
Amino acid position 791 (e.g., Y791F) Amino acid position 802 Amino
acid position 804 (e.g., V804L, V804M, or V804E) (e.g., causing
MTC) Amino acid position 805 (e.g., E805K) Amino acid position 806
(e.g., E806C; Y806E, Y806F, Y806S, Y806G, Y806C.sup.2) Amino acid
position 818 (e.g., E818K) Amino acid position 819 (e.g., S819I)
Amino acid position 823 (e.g., G823E) Amino acid position 826
(e.g., Y826M).sup.10 Amino acid position 833 (e.g., R833C) Amino
acid position 841 (e.g., P841L, P841P) Amino acid position 843
(e.g., E843D) Amino acid position 844 (e.g., R844W, R844Q, R844L)
Amino acid position 848 (e.g., M848T) Amino acid position 852
(e.g., I852M) Amino acid position 866 (e.g., A866W.sup.2) Amino
acid position 873 (e.g., R873W) Amino acid position 876 (e.g.,
A876V) Amino acid position 881 (e.g., L881V) Amino acid position
882 Amino acid position 883 (e.g., A883F, A883S, A883T) Amino acid
position 884 (e.g., E884K) Amino acid position 886 (e.g., R886W)
Amino acid position 891 (e.g., S891A) Amino acid position 897
(e.g., R897Q) Amino acid position 898 (e.g., D898V) Amino acid
position 901 (e.g., E901K) Amino acid position 904 (e.g., S904F,
S904C.sup.2) Amino acid position 907 (e.g., K907E, K907M) Amino
acid position 908 (e.g., R908K) Amino acid position 911 (e.g.,
G911D) Amino acid position 912 (e.g., R912P, R912Q) Amino acid
position 918 (e.g., M918T, M918V, M918L.sup.6) (e.g., causing MTC)
Amino acid position 919 (e.g., A919V) Amino acid position 921
(e.g., E921K) Amino acid position 922 (e.g., S922P, S922Y) Amino
acid position 930 (e.g., T930M) Amino acid position 961 (e.g.,
F961L) Amino acid position 972 (e.g., R972G) Amino acid position
982 (e.g., R982C) Amino acid position 1009 (e.g., M1009V) Amino
acid position 1017 (e.g., D1017N) Amino acid position 1041 (e.g.,
V1041G) Amino acid position 1064 (e.g., M1064T) RET + 3.sup.1 1U.S.
Patent Application Publication No. 2014/0272951. .sup.2Krampitz et
al., Cancer 120:1920-1931, 2014. .sup.3Latteyer, et al., J. Clin.
Endocrinol. Metab. 101(3):1016-22, 2016. .sup.4Silva, et al.
Endocrine 49.2:366-372, 2015. .sup.5Scollo, et al., Endocr. J.
63(1):87-91, 2016. .sup.6Jovanovic, et al., Prilozi 36(1):93-107,
2015. .sup.7Qi, et al., Oncotarget. 6(32):33993-4003, 2015. *R525W
and A513D appear to act in combination with S891A to enchance
oncogenic activity. .sup.8Kim, et al. ACTA
ENDOCRINOLOGICA-BUCHAREST 11.2, 189-194, 2015. .sup.9Cecchirini, et
al. Oncogene, 14, 2609-2612, 1997. .sup.10Karrasch, et al. Eur.
Thyroid J., 5(1):73-7, 2016. .sup.11Scollo et al., Endocr. J.
63:87-91, 2016. .sup.12Wells et al., Thyroid 25:567-610, 2015.
[0518] In some embodiments, the dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same,
includes a splice variation in a RET mRNA which results in an
expressed protein that is an alternatively spliced variant of RET
having at least one residue deleted (as compared to the wild-type
RET kinase) resulting in a constitutive activity of a RET kinase
domain.
[0519] In some embodiments, the dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same,
includes at least one point mutation in a RET gene that results in
the production of a RET kinase that has one or more amino acid
substitutions or insertions or deletions in a RET gene that results
in the production of a RET kinase that has one or more amino acids
inserted or removed, as compared to the wild-type RET kinase, which
is more resistant to inhibition of its phosphotransferase activity
by one or more RET kinase inhibitor(s) that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, as compared to a wildtype RET kinase or a RET kinase not
including the same mutation. Such mutations can, optionally, not
cause a cancer cell or a tumor to decrease its sensitivity to
treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof (e.g., as
compared to a cancer cell or a tumor that does not include the
particular RET inhibitor resistance mutation). In such embodiments,
a RET inhibitor resistance mutation can result in a RET kinase that
has one or more of an increased V.sub.max, a decreased K.sub.m for
ATP, and an increased K.sub.D for a RET kinase inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, when in the presence of a RET
kinase inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, as compared to
a wildtype RET kinase or a RET kinase not having the same mutation
in the presence of the same RET kinase inhibitor.
[0520] In other embodiments, the dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same,
includes at least one point mutation in a RET gene that results in
the production of a RET kinase that has one or more amino acid
substitutions as compared to the wild-type RET kinase, and which
has increased resistance to a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, as compared to
a wildtype RET kinase or a RET kinase not including the same
mutation. In such embodiments, a RET inhibitor resistance mutation
can result in a RET kinase that has one or more of an increased
V.sub.max, a decreased K.sub.m, and a decreased K.sub.D in the
presence of a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, as compared to a wildtype RET
kinase or a RET kinase not having the same mutation in the presence
of the same compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof.
[0521] Examples of RET inhibitor resistance mutations can, e.g.,
include point mutations, insertions, or deletions in and near the
ATP binding site in the tertiary structure of RET kinase, including
but not limited to the gatekeeper residue, P-loop residues,
residues in or near the DFG motif, and ATP cleft solvent front
amino acid residues. Additional examples of these types of
mutations include changes in residues that may affect enzyme
activity and/or drug binding including but are not limited to
residues in the activation loop, residues near or interacting with
the activation loop, residues contributing to active or inactive
enzyme conformations, changes including mutations, deletions, and
insertions in the loop proceeding the C-helix and in the C-helix.
Specific residues or residue regions that may be changed (and are
RET inhibitor resistance mutations) include but are not limited to
those listed in Table 3 based on the human wildtype RET protein
sequence (e.g., SEQ ID NO: 1). Additional examples of RET inhibitor
resistance mutation positions are shown in Table 4. Changes to
these residues may include single or multiple amino acid changes,
insertions within or flanking the sequences, and deletions within
or flanking the sequences.
[0522] In some embodiments, compounds of General Formula I and
pharmaceutically acceptable salts and solvates are useful in
treating patients that develop cancers with RET inhibitor
resistance mutations (that result in an increased resistance to a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E) by either dosing in combination or as a follow-up therapy to
existing drug treatments (e.g., other RET kinase inhibitors that
are not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof). Exemplary RET kinase
inhibitors (e.g., other RET kinase inhibitors that are not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof) are described herein. In some embodiments, a
RET kinase inhibitor can be selected from the group consisting of
cabozantinib, vandetanib, alectinib, sorafenib, levatinib,
ponatinib, dovitinib, sunitinib, foretinib, BLU667, and
BLU6864.
[0523] In some embodiments, compounds of the General Formula I and
pharmaceutically acceptable salts and solvates would be useful for
treating a cancer that has been identified as having one or more
RET inhibitor resistance mutations (that result in an increased
resistance to a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E).
TABLE-US-00003 TABLE 3 RET Inhibitor Resistance Mutations Exemplary
RET Inhibitor Resistance Mutations Amino acid position 804 (V804M,
V804L, V804E).sup.1, 2 Amino acid position 804/805
(V804M/E805K).sup.3 Amino acid position 806 (Y806C, Y806E).sup.4
.sup.1Yoon et al., J. Med. Chem. 59(1):358-73, 2016. .sup.2U.S.
Pat. No. 8,629,135. .sup.3Cranston, et al., Cancer Res.
66(20):10179-87, 2006. .sup.4Carlomagno, et al., Endocr. Rel.
Cancer 16(1):233-41, 2009.
TABLE-US-00004 TABLE 4 Additional Exemplary Amino Acid Positions of
RET Inhibitor Resistance Mutations RET Residue # Kinase Location
788 CONTRIBUTES TO INACTIVE/ACTIVE CONFORMATION EQUILIBRIUM 804
GATEKEEPER 806 ATP CLEFT SOLVENT FRONT 810 SOLVENT FRONT 891 NEAR
DFG MOTIF 729-739 P-LOOP RESIDUES 759-768 LOOP PROCEEDING C-HELIX
769-781 C-HELIX 868-874 NEAR OR INTERACTING WITH THE ACTIVATION
LOOP 891-914 ACTIVATION LOOP
[0524] The oncogenic role of RET was firstly described in papillary
thyroid carcinoma (PTC) (Grieco et al., Cell, 1990, 60, 557-63),
which arises from follicular thyroid cells and is the most common
thyroid malignancy. Approximately 20-30% of PTC harbor somatic
chromosomal rearrangements (translocations or inversions) linking
the promoter and the 5' portions of constitutively expressed,
unrelated genes to the RET tyrosine kinase domain (Greco et al., Q.
J. Nucl. Med. Mol. Imaging, 2009, 53, 440-54), therefore driving
its ectopic expression in thyroid cells. To date, a variety of
fusion partners have been identified, all providing a
protein/protein interaction domain that induces ligand-independent
RET dimerization and constitutive kinase activity (see, e.g., Table
1). The role of RET-PTC rearrangements in the pathogenesis of PTC
has been confirmed in transgenic mice (Santoro et al., Oncogene,
1996, 12, 1821-6). Recently, a 10.6 Mb pericentric inversion in
chromosome 10, where RET gene maps, has been identified in about 2%
of lung adenocarcinoma patients, generating different variants of
the chimeric gene KIF5B-RET (Ju et al., Genome Res., 2012, 22,
436-45; Kohno et al., 2012, Nature Med., 18, 375-7; Takeuchi et
al., Nature Med., 2012, 18, 378-81; Lipson et al., 2012, Nature
Med., 18, 382-4). The fusion transcripts are highly expressed and
all the resulting chimeric proteins contain the N-terminal portion
of the coiled-coil region of KIF5B, which mediates
homodimerization, and the entire RET kinase domain. None of RET
positive patients harbor other known oncogenic alterations (such as
EGFR or K-Ras mutation, ALK translocation), supporting the
possibility that KIF5B-RET fusion could be a driver mutation of
lung adenocarcinoma. The oncogenic potential of KIF5B-RET has been
confirmed by transfecting the fusion gene into cultured cell lines:
similarly to what has been observed with RET-PTC fusion proteins,
KIF5B-RET is constitutively phosphorylated and induces NIH-3T3
transformation and IL-3 independent growth of BA-F3 cells. However,
other RET fusion proteins have been identified in lung
adenocarcinoma patients, such as the CCDC6-RET fusion protein,
which has been found to play a key role in the proliferation of the
human lung adenocarcinoma cell line LC-2/ad (Journal of Thoracic
Oncology, 2012, 7(12): 1872-1876). RET inhibitors have been shown
to be useful in treating lung cancers involving RET rearrangements
(Drilon, A. E. et al. J Clin Oncol 33, 2015 (suppl; abstr 8007)).
RET fusion proteins have also been identified in patients having
colorectal cancer (Song Eun-Kee, et al. International Journal of
Cancer, 2015, 136: 1967-1975).
[0525] Besides rearrangements of the RET sequence, gain of function
point mutations of RET proto-oncogene are also driving oncogenic
events, as shown in medullary thyroid carcinoma (MTC), which arises
from parafollicular calcitonin-producing cells (de Groot, et al.,
Endocrine Rev., 2006, 27, 535-60; Wells and Santoro, Clin. Cancer
Res., 2009, 15, 7119-7122). Around 25% of MTC are associated with
multiple endocrine neoplasia type 2 (MEN2), a group of inherited
cancer syndromes affecting neuroendocrine organs caused by germline
activating point mutations of RET. In MEN2 subtypes (MEN2A, MEN2B
and Familial MTC/FMTC) RET gene mutations have a strong
phenotype-genotype correlation defining different MTC
aggressiveness and clinical manifestations of the disease. In MEN2A
syndrome mutations involve one of the six cysteine residues (mainly
C634) located in the cysteine-rich extracellular region, leading to
ligand-independent homodimerization and constitutive RET
activation. Patients develop MTC at a young age (onset at 5-25
years) and may also develop pheochromocytoma (50%) and
hyperparathyroidism. MEN2B is mainly caused by M918T mutation,
which is located in the kinase domain. This mutation constitutively
activates RET in its monomeric state and alters substrate
recognition by the kinase. MEN2B syndrome is characterized by an
early onset (<1 year) and very aggressive form of MTC,
pheochromocytoma (50% of patients) and ganglioneuromas. In FMTC the
only disease manifestation is MTC, usually occurring at an adult
age. Many different mutations have been detected, spanning the
entire RET gene. The remaining 75% of MTC cases are sporadic and
about 50% of them harbor RET somatic mutations: the most frequent
mutation is M918T that, as in MEN2B, is associated with the most
aggressive phenotype. Somatic point mutations of RET have also been
described in other tumors such as colorectal cancer (Wood et al.,
Science, 2007, 318, 1108-13) and small cell lung carcinoma (Jpn. J.
Cancer Res., 1995, 86, 1127-30).
[0526] RET signaling components have been found to be expressed in
primary breast tumors and to functionally interact with estrogen
receptor-cc pathway in breast tumor cell lines (Boulay et al.,
Cancer Res. 2008, 68, 3743-51; Plaza-Menacho et al., Oncogene,
2010, 29, 4648-57), while RET expression and activation by GDNF
family ligands could play an important role in perineural invasion
by different types of cancer cells (Ito et al., Surgery, 2005, 138,
788-94; Gil et al., J. Natl. Cancer Inst., 2010, 102, 107-18;
Iwahashi et al., Cancer, 2002, 94, 167-74).
[0527] RET is also expressed in 30-70% of invasive breast cancers,
with expression being relatively more frequent in estrogen
receptor-positive tumors (Plaza-Menacho, I., et al., Oncogene,
2010, 29, 4648-4657; Esseghir, S., et al., Cancer Res., 2007, 67,
11732-11741; Morandi, A., et al., Cancer Res., 2013, 73, 3783-3795;
Gattelli, A., EMBO Mol. Med., 2013, 5, 1335-1350).
[0528] The identification of RET rearrangements has been reported
in a subset of (patient-derived xenograft) PDX established from
colorectal cancer. Although the frequency of such event in
colorectal cancer patients remains to be defined, these data
suggest a role of RET as a target in this indication (Gozgit et
al., AACR Annual Meeting 2014). Studies have shown that the RET
promoter is frequently methylated in colorectal cancers, and
heterozygous missense mutations, which are predicted to reduce RET
expression, are identified in 5-10% of cases, which suggests that
RET might have some features of a tumor suppressor in sporadic
colon cancers (Luo, Y., et al., Oncogene, 2013, 32, 2037-2047;
Sjoblom, T., et al., Science, 2006, 268-274; Cancer Genome Atlas
Network, Nature, 2012, 487, 330-337).
[0529] An increasing number of tumor types are now being shown to
express substantial levels of wild-type RET kinase that could have
implications for tumor progression and spread. RET is expressed in
50-65% of pancreatic ductal carcinomas, and expression is more
frequent in metastatic and higher grade tumors (Ito, Y, et al.,
Surgery, 2005, 138, 788-794; Zeng, Q., et al., J. Int. Med. Res.
2008, 36, 656-664).
[0530] In neoplasms of hematopoietic lineages, RET is expressed in
acute myeloid leukemia (AML) with monocytic differentiation, as
well as in CMML (Gattei, V. et al., Blood, 1997, 89, 2925-2937;
Gattei, V., et al., Ann. Hematol, 1998, 77, 207-210; Camos, M.,
Cancer Res. 2006, 66, 6947-6954). Recent studies have identified
rare chromosomal rearrangements that involve RET in patients with
chronic myelomonocytic leukemia (CMML). CMML is frequently
associated with rearrangements of several tyrosine kinases, which
result in the expression of chimeric cytosolic oncoproteins that
lead to activation of RAS pathways (Kohlmann, A., et al., J. Clin.
Oncol. 2010, 28, 2858-2865). In the case of RET, gene fusions that
link RET with BCR (BCR-RET) or with fibroblast growth factor
receptor 1 oncogene partner (FGFR1OP-RET) were transforming in
early hematopoietic progenitor cells and could shift maturation of
these cells towards monocytic paths, probably through the
initiation of RET-mediated RAS signaling (Ballerini, P., et al.,
Leukemia, 2012, 26, 2384-2389).
[0531] RET expression has also been shown to occur in several other
tumor types, including prostate cancer, small-cell lung carcinoma,
melanoma, renal cell carcinoma, and head and neck tumors (Narita,
N., et al., Oncogene, 2009, 28, 3058-3068; Mulligan, L. M., et al.,
Genes Chromosomes Cancer, 1998, 21, 326-332; Flavin, R., et al.,
Urol. Oncol., 2012, 30, 900-905; Dawson, D. M., J Natl Cancer Inst,
1998, 90, 519-523).
[0532] In neuroblastoma, RET expression and activation by GFLs has
roles in tumor cell differentiation, potentially collaborating with
other neurotrophic factor receptors to down regulate N-Myc, the
expression of which is a marker of poor prognosis (Hofstra, R. M.,
W., et al., Hum. Genet. 1996, 97, 362-364; Petersen, S. and
Bogenmann, E., Oncogene, 2004, 23, 213-225; Brodeur, G. M., Nature
Ref Cancer, 2003, 3, 203-216).
[0533] Multitargeted inhibitors which cross react with RET are
known (Borrello, M. G., et al., Expert Opin. Ther. Targets, 2013,
17(4), 403-419; International Patent Application Nos. WO
2014/141187, WO 2014/184069, and WO 2015/079251).
[0534] Accordingly, provided herein are methods for treating a
patient diagnosed with (or identified as having) a cancer (e.g., a
RET-associated cancer) (e.g., a RET-associated cancer that includes
one or more RET inhibitor resistance mutations) that include
administering to the patient a therapeutically effective amount of
a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof. Also provided herein are methods for
treating a patient identified or diagnosed as having a
RET-associated cancer (e.g., a patient that has been identified or
diagnosed as having a RET-associated cancer through the use of a
regulatory agency-approved, e.g., FDA-approved test or assay for
identifying dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same, in a patient or
a biopsy sample from the patient) (e.g., any of the RET-associated
cancers described herein or known in the art) (e.g., a
RET-associated cancer that includes one or more RET inhibitor
resistance mutations) that include administering to the patient a
therapeutically effective amount of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof. In some embodiments, the test
or assay is provided as a kit.
[0535] Also provided are methods for treating cancer in a patient
in need thereof, the method comprising: (a) determining if the
cancer in the patient is a RET-associated cancer (e.g., a
RET-associated cancer including RET-associated cancers having one
or more RET inhibitor resistance mutations) (e.g., using a
regulatory-agency approved, e.g., FDA-approved, kit for identifying
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same, in a patient or a biopsy
sample from the patient, or by performing any of the non-limiting
examples of assays described herein); and (b) if the cancer is
determined to be a RET-associated cancer, administering to the
patient a therapeutically effective amount of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
or a pharmaceutical composition thereof. Some embodiments of these
methods further include administering to the subject another
anticancer agent (e.g., another RET inhibitor, e.g., a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, or a different
RET inhibitor that is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof). In some
embodiments, the subject was previously treated with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or previously
treated with another anticancer treatment, e.g., after resection of
a tumor or radiation therapy.
[0536] Also provided are methods of treating a patient (e.g., a
patient suspected of having a RET-associated cancer, a patient
presenting with one or more symptoms of a RET-associated cancer, or
a patient having an elevated risk of developing a RET-associated
cancer) that include performing an assay (e.g., an assay that
utilizes next generation sequencing, pyrosequencing,
immunohistochemistry, or break apart FISH analysis) (e.g., using a
regulatory agency-approved, e.g., FDA-approved kit) on a sample
obtained from the patient to determine whether the patient has
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same (e.g., one or more RET
inhibitor resistance mutations), and administering (e.g.,
specifically or selectively administering) a therapeutically
effective amount of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof to the patient determined to
have dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same. Additional, non-limiting
assays that may be used in these methods are described herein.
Additional assays are also known in the art. Some embodiments of
these methods further include administering to the subject another
anticancer agent (e.g., another RET inhibitor, e.g., a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, or a different
RET inhibitor that is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof). In some
embodiments of these methods, the subject was previously treated
with a RET inhibitor that is not a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof or previously
treated with another anticancer treatment, e.g., after resection of
a tumor or radiation therapy.
[0537] Also provided is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof for use in treating a
RET-associated cancer (e.g., a RET-associated cancer including
RET-associated cancers having one or more RET inhibitor resistance
mutations) in a patient identified or diagnosed as having a
RET-associated cancer through a step of performing an assay (e.g.,
an in vitro assay) (e.g., an assay that utilizes next generation
sequencing, immunohistochemistry, or break apart FISH analysis)
(e.g., using a regulatory agency-approved, e.g., FDA-approved kit)
on a sample obtained from the patient to determine whether the
patient has dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., one or
more RET inhibitor resistance mutations), where the presence of
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same, identifies that the patient
has a RET-associated cancer. Also provided is the use of a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof for the manufacture of a medicament for treating a
RET-associated cancer (e.g., a RET-associated cancer having one or
more RET inhibitor resistance mutations) in a patient identified or
diagnosed as having a RET-associated cancer through a step of
performing an assay (e.g., an in vitro assay) (e.g., an assay that
utilizes next generation sequencing, immunohistochemistry, or break
apart FISH analysis) (e.g., using a regulatory agency-approved,
e.g., FDA-approved, kit) on a sample obtained from the patient to
determine whether the patient has a dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same
where the presence of dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same, identifies that
the patient has a RET-associated cancer. Some embodiments of any of
the methods or uses described herein further include recording in
the patient's clinical record (e.g., a computer readable medium)
that the patient determined to have dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same
(e.g., determined to have one or more RET inhibitor resistance
mutations), through the performance of the assay, should be
administered a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof or a pharmaceutical composition
thereof.
[0538] Also provided is a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, for use in the
treatment of a cancer (e.g., a RET-associated cancer, e.g., a
RET-associated cancer having one or more RET inhibitor resistance
mutations) in a patient in need thereof or a patient identified or
diagnosed as having a RET-associated cancer (e.g., a patient that
has been identified or diagnosed as having a RET-associated cancer
through the use of a regulatory agency-approved, e.g.,
FDA-approved, kit for identifying dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same,
in a patient or a biopsy sample from the sample) (e.g., any of the
RET-associated cancers described herein or known in the art). Also
provided is the use of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof for the
manufacture of a medicament for treating a cancer (e.g., a
RET-associated cancer, e.g., a RET-associated cancer having one or
more RET inhibitor resistance mutations) in a patient identified or
diagnosed as having a RET-associated cancer (e.g., a patient that
has been identified or diagnosed as having a RET-associated cancer
through the use of a regulatory agency-approved, e.g.,
FDA-approved, kit for identifying dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same,
in a patient or a biopsy sample from the patient) (e.g., any of the
RET-associated cancers described herein or known in the art).
[0539] In some embodiments of any of the methods or uses described
herein, the patient has been identified or diagnosed as having a
cancer with dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., a cancer
having one or more RET inhibitor resistance mutations) (e.g., as
determined using a regulatory agency-approved, e.g., FDA-approved,
assay or kit). In some embodiments of any of the methods or uses
described herein, the patient has a tumor that is positive for
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same (e.g., a tumor positive for
one or more RET inhibitor resistance mutations) (e.g., as
determined using a regulatory-agency-approved assay or kit). In
some embodiments of any of the methods or uses described herein,
the patient can be a patient with a tumor(s) that is positive for
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same (e.g., a tumor that is
positive for one or more RET inhibitor resistance mutations) (e.g.,
identified as positive using a regulatory agency-approved, e.g.,
FDA-approved, assay or kit). In some embodiments of any of the
methods or uses described herein, the patient can be a patient
whose tumors have dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., a patient
whose tumors have one or more RET inhibitor resistance mutations)
(e.g., where the tumor is identified as such using a regulatory
agency-approved, e.g., FDA-approved, kit or assay). In some
embodiments of any of the methods or uses described herein, the
patient is suspected of having a RET-associated cancer. In some
embodiments of any of the methods or uses described herein, the
patient has a clinical record indicating that the patient has a
tumor that has dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., a tumor
having one or more RET inhibitor resistance mutations) (and
optionally the clinical record indicates that the patient should be
treated with any of the compounds of General Formula I or a
pharmaceutically acceptable salts or solvates thereof or
compositions provided herein).
[0540] Also provided are methods of treating a patient that include
administering a therapeutically effective amount of a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof to a patient having a clinical record that indicates that
the patient has dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., one or
more RET inhibitor resistance mutations). Also provided is the use
of a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof for the manufacture of a medicament for
treating a RET-associated cancer in a patient having a clinical
record that indicates that the patient has dysregulation of a RET
gene, a RET kinase, or expression or activity or level of any of
the same (e.g., one or more RET inhibitor resistance mutations).
Also provided is the use of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof for treating a
RET-associated cancer in a patient having a clinical record that
indicates that the patient has dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same
(e.g., one or more RET inhibitor resistance mutations). Some
embodiments of these methods and uses can further include: a step
of performing an assay (e.g., an in vitro assay) (e.g., an assay
that utilizes next generation sequencing, immunohistochemistry, or
break apart FISH analysis) (e.g., using a regulatory
agency-approved, e.g., FDA-approved, kit) on a sample obtained from
the patient to determine whether the patient has dysregulation of a
RET gene, a RET kinase, or expression or activity or level of any
of the same, and recording the information in a patient's clinical
file (e.g., a computer readable medium) that the patient has been
identified to have dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., one or
more RET inhibitor resistance mutations).
[0541] Also provided herein is a method of treating a subject. The
method includes performing an assay on a sample obtained from the
subject to determine whether the subject has dysregulation of a RET
gene, a RET protein, or expression or level of any of the same
(e.g., one or more RET inhibitor resistance mutations). The method
also includes administering to a subject determined to have
dysregulation of a RET gene, a RET protein, or expression or
activity, or level of any of the same (e.g., one or more RET
inhibitor resistance mutations) a therapeutically effective amount
of a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof. In some embodiments, the RET fusion can be
selected from a KIF5B-RET fusion and a CCDC6-RET fusion. In some
embodiments, the dysregulation in a RET gene, a RET kinase protein,
or expression or activity of the same is a gene or chromosome
translocation that results in the expression of a RET fusion
protein (e.g., any of the RET fusion proteins described herein). In
some embodiments, the dysregulation in a RET gene, a RET kinase
protein, or expression or activity or level of any of the same is
one or more point mutation in the RET gene (e.g., any of the one or
more of the RET point mutations described herein). The one or more
point mutations in a RET gene can result, e.g., in the translation
of a RET protein having one or more of the following amino acid
substitutions: M918T, M918V, C634W, V804L, and V804M. In some
embodiments, the dysregulation in a RET gene, a RET kinase protein,
or expression or activity or level of any of the same is one or
more RET inhibitor resistance mutations (e.g., any combination of
the one or more RET inhibitor resistance mutations described
herein). Some embodiments of these methods further include
administering to the subject another anticancer agent (e.g.,
another RET inhibitor, e.g., a RET inhibitor that is not a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof, or a different RET inhibitor that is a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof).
[0542] Also provided are methods (e.g., in vitro methods) of
selecting a treatment for a patient that includes administration of
a therapeutically effective amount of a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof for a
patient identified or diagnosed as having a RET-associated cancer
(e.g., a RET-associated cancer having one or more RET inhibitor
resistance mutations) (e.g., a patient that has been identified or
diagnosed as having a RET-associated cancer through the use of a
regulatory agency-approved, e.g., FDA-approved, kit for identifying
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same, in a patient or a biopsy
sample from the patient) (e.g., any of the RET-associated cancers
described herein or known in the art). Some embodiments can further
include administering the selected treatment to the patient
identified or diagnosed as having a RET-associated cancer (e.g., a
RET-associated cancer having one or more RET inhibitor resistance
mutations). Some embodiments can further include administering the
selected treatment to the patient identified or diagnosed as having
a RET-associated cancer (e.g., a RET-associated cancer having one
or more RET inhibitor resistance mutations). Some embodiments can
further include a step of performing an assay (e.g., an in vitro
assay) (e.g., an assay that utilizes the next generation
sequencing, immunohistochemistry, or break apart FISH analysis)
(e.g., using a regulatory agency-approved, e.g., FDA-approved, kit)
on a sample obtained from the patient to determine whether the
patient has dysregulation of a RET gene, a RET kinase, or
expression or activity or level of any of the same (e.g., one or
more RET inhibitor resistance mutations), and identifying and
diagnosing a patient determined to have dysregulation of a RET
gene, a RET kinase, or expression or activity or level of any of
the same (e.g., one or more RET inhibitor resistance mutations), as
having a RET-associated cancer.
[0543] Also provided herein are methods of selecting a treatment
for a patient that include administration of a therapeutically
effective amount of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, wherein the
methods include a step of performing an assay (e.g., an in vitro
assay) (e.g., an assay that utilizes next generation sequencing,
immunohistochemistry, or break apart FISH analysis) (e.g., using a
regulatory agency-approved, e.g., FDA-approved, kit) on a sample
obtained from the patient to determine whether the patient has
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same (e.g., one or more RET
inhibitor resistance mutations), and identifying or diagnosing a
patient determined to have dysregulation of a RET gene, a RET
kinase, or expression or activity or level of any of the same
(e.g., one or more RET inhibitor resistance mutations), as having a
RET-associated cancer, and selecting a therapeutic treatment
including administration of a therapeutically effective amount of a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof to the patient identified or diagnosed as having
a RET-associated cancer. Some embodiments further include
administering the selected treatment to the patient identified or
diagnosed as having a RET-associated cancer.
[0544] Also provided are methods of selecting a patient for
treatment including administration of a therapeutically effective
amount of a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof or a pharmaceutical composition
thereof, wherein the methods include selecting, identifying, or
diagnosing a patient having a RET-associated cancer (e.g., a
RET-associated cancer having one or more RET inhibitor resistance
mutations), and selecting the patient for treatment including
administration of a therapeutically-effective amount of a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof. In some embodiments, identifying or diagnosing a
patient as having a RET-associated cancer can include a step of
performing an assay (e.g., an in vitro assay) (e.g., an assay that
utilizes next generation sequencing, immunohistochemistry, or break
apart FISH analysis) (e.g., using a regulatory agency-approved,
e.g., FDA-approved, kit) on a sample obtained from the patient to
determine whether the patient has dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same
(e.g., one or more RET inhibitor resistance mutations), and
identifying or diagnosing a patient determined to have
dysregulation of a RET gene, a RET kinase, or expression or
activity or level of any of the same, as having a RET-associated
cancer. In some embodiments, the method of selecting a treatment
can be used as a part of a clinical study that includes
administration of various treatments of a RET-associated
cancer.
[0545] In some embodiments of any of the methods or uses described
herein, an assay used to determine whether the patient has
dysregulation of a RET gene, or a RET kinase, or expression or
activity or level of any of the same (e.g., one or more RET
inhibitor resistance mutations), using a sample (e.g., a biological
sample or a biopsy sample (e.g., a paraffin-embedded biopsy sample)
from a patient (e.g., a patient suspected of having a
RET-associated cancer, a patient having one or more symptoms of a
RET-associated cancer, and/or a patient that has an increased risk
of developing a RET-associated cancer) can include, for example,
next generation sequencing, immunohistochemistry, fluorescence
microscopy, break apart FISH analysis, Southern blotting, Western
blotting, FACS analysis, Northern blotting, and PCR-based
amplification (e.g., RT-PCR and quantitative real-time RT-PCR). As
is well-known in the art, the assays are typically performed, e.g.,
with at least one labelled nucleic acid probe or at least one
labelled antibody or antigen-binding fragment thereof. Assays can
utilize other detection methods known in the art for detecting
dysregulation of a RET gene, a RET kinase, or expression or
activity or levels of any of the same (see, e.g., the references
cited herein).
[0546] In the field of medical oncology it is normal practice to
use a combination of different forms of treatment to treat each
patient with cancer. In medical oncology the other component(s) of
such conjoint treatment or therapy in addition to compositions
provided herein may be, for example, surgery, radiotherapy, and
chemotherapeutic agents, such as kinase inhibitors, signal
transduction inhibitors and/or monoclonal antibodies. Compounds of
General Formula I therefore may also be useful as adjuvants to
cancer treatment, that is, they can be used in combination with one
or more additional therapies or therapeutic agents, for example a
chemotherapeutic agent that works by the same or by a different
mechanism of action.
[0547] In some embodiments of any the methods described herein, the
compound of General Formula I (or a pharmaceutically acceptable
salt or solvate thereof) is administered in combination with a
therapeutically effective amount of at least one additional
therapeutic agent selected from one or more additional therapies or
therapeutic (e.g., chemotherapeutic) agents.
[0548] Non-limiting examples of additional therapeutic agents
include: other RET-targeted therapeutic agents (i.e. other RET
kinase inhibitors; RET inhibitors that are not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof), receptor tyrosine kinase-targeted therapeutic agents,
signal transduction pathway inhibitors, checkpoint inhibitors,
modulators of the apoptosis pathway (e.g. obataclax); cytotoxic
chemotherapeutics, angiogenesis-targeted therapies, immune-targeted
agents, and radiotherapy.
[0549] In some embodiments, the other RET-targeted therapeutic is a
multikinase inhibitor exhibiting RET inhibition activity. In some
embodiments, the other RET-targeted therapeutic inhibitor is
selective for a RET kinase. Exemplary RET-targeted therapeutics can
exhibit inhibition activity (IC.sub.50) against a RET kinase of
less than about 1000 nM, less than about 500 nM, less than about
200 nM, less than about 100 nM, less than about 50 nM, less than
about 25 nM, less than about 10 nM, or less than about 1 nM.
[0550] Non-limiting examples of RET-targeted therapeutic agents
include alectinib, apatinib, cabozantinib (XL-184), dovitinib,
lenvatinib, motesanib, nintedanib, ponatinib, regorafenib,
sitravatinib (MGCD516), sunitinib, sorafenib, vatalanib,
vandetanib, AUY-922
(5-(2,4-Dihydroxy-5-isopropyl-phenyl)-N-ethyl-4-[4-(morpholinomethyl)phen-
yl]isoxazole-3-carboxamide), BLU6864, BLU-667, DCC-2157, NVP-AST487
(1-[4-[(4-ethylpiperazin-1-yl)methyl]-3-(trifluoromethyl)phenyl]-3-[4-[6--
(methylamino)pyrimidin-4-yl]oxyphenyl]urea), PZ-1, RPI-1
(1,3-dihydro-5,6-dimethoxy-3-[(4-hydroxyphenyl)methylene]-H-indol-2-one),
RXDX-105
(1-(3-((6,7-dimethoxyquinazolin-4-yl)oxy)phenyl)-3-(5-(1,1,1-tri-
fluoro-2-methylpropan-2-yl)isoxazol-3-yl)urea), SPP86
(1-Isopropyl-3-(phenylethynyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine),
and TG101209
(N-(1,1-dimethylethyl)-3-[[5-methyl-2-[[4-(4-methyl-1-piperaziny-
l)phenyl]amino]-4-pyrimidinyl]amino]-benzenesulfonamide).
[0551] Additional examples of other RET kinase inhibitors include
those described in U.S. Pat. Nos. 9,150,517 and 9,149,464, and
International Publication No. WO 2014075035, all of which are
hereby incorporated by reference. For example, in some embodiments
the other RET inhibitor is a compound of formula I:
##STR00151##
wherein R.sub.1 is C.sub.6-C.sub.24alkyl or polyethylene glycol; or
a pharmaceutically acceptable alt form thereof. In some
embodiments, the other RET inhibitor is
4-{5-[bis-(chloroethyl)-amino]-1-methyl-1H-benzimidazol-2-yl}butyric
acid dodecyl ester.
[0552] Yet other therapeutic agents include RET inhibitors such as
those described, for example, in U.S. Pat. Nos. 7,504,509;
8,299,057; 8,399,442; 8,067,434; 8,937,071; 9,006,256; and
9,035,063; U.S. Publication Nos. 2014/0121239; 20160176865;
2011/0053934; 2011/0301157; 2010/0324065; 2009/0227556;
2009/0130229; 2009/0099167; 2005/0209195; International Publication
Nos. WO 2014/184069; WO 2014/072220; WO 2012/053606; WO
2009/017838; WO 2008/031551; WO 2007/136103; WO 2007/087245; WO
2007/057399; WO 2005/051366; WO 2005/062795; and WO 2005/044835;
and J. Med. Chem. 2012, 55 (10), 4872-4876, all of which are hereby
incorporated by reference in their entireties.
[0553] Non-limiting examples of receptor tyrosine kinase (Trk)
targeted therapeutic agents, include afatinib, cabozantinib,
cetuximab, crizotinib, dabrafenib, entrectinib, erlotinib,
gefitinib, imatinib, lapatinib, lestaurtinib, nilotinib, pazopanib,
panitumumab, pertuzumab, sunitinib, trastuzumab, 1-((3
S,4R)-4-(3-fluorophenyl)-1-(2-methoxyethyl)pyrrolidin-3-yl)-3-(4-methyl-3-
-(2-methylpyrimidin-5-yl)-1-phenyl-1H-pyrazol-5-yl)urea, AG 879,
AR-772, AR-786, AR-256, AR-618, AZ-23, AZ623, DS-6051, Go 6976,
GNF-5837, GTx-186, GW 441756, LOXO-101, MGCD516, PLX7486, RXDX101,
TPX-0005, and TSR-011. Additional Trk targeted thereapeutic agents
include those described in U.S. Pat. Nos. 8,450,322; 8,513,263;
8,933,084; 8,791,123; 8,946,226; 8,450,322; 8,299,057; and
8,912,194; U.S. Publication No. 2016/0137654; 2015/0166564;
2015/0051222; 2015/0283132; and 2015/0306086; International
Publication No. WO 2010/033941; WO 2010/048314; WO 2016/077841; WO
2011/146336; WO 2011/006074; WO 2010/033941; WO 2012/158413; WO
2014078454; WO 2014078417; WO 2014078408; WO 2014078378; WO
2014078372; WO 2014078331; WO 2014078328; WO 2014078325; WO
2014078323; WO 2014078322; WO 2015175788; WO 2009/013126; WO
2013/174876; WO 2015/124697; WO 2010/058006; WO 2015/017533; WO
2015/112806; WO 2013/183578; and WO 2013/074518, all of which are
hereby incorporated by reference in their entireties.
[0554] Further examples of Trk inhibitors can be found in U.S. Pat.
No. 8,637,516, International Publication No. WO 2012/034091, U.S.
Pat. No. 9,102,671, International Publication No. WO 2012/116217,
U.S. Publication No. 2010/0297115, International Publication No. WO
2009/053442, U.S. Pat. No. 8,642,035, International Publication No.
WO 2009092049, U.S. Pat. No. 8,691,221, International Publication
No. WO2006131952, all of which are incorporated by reference in
their entireties herein. Exemplary Trk inhibitors include GNF-4256,
described in Cancer Chemother. Pharmacol. 75(1):131-141, 2015; and
GNF-5837
(N-[3-[[2,3-dihydro-2-oxo-3-(1H-pyrrol-2-ylmethylene)-1H-indol-6-yl]amino-
]-4-methylphenyl]-N'-[2-fluoro-5-(trifluoromethyl)phenyl]-urea),
described in ACS Med. Chem. Lett. 3(2): 140-145, 2012, each of
which is incorporated by reference in its entirety herein.
[0555] Additional examples of Trk inhibitors include those
disclosed in U.S. Publication No. 2010/0152219, U.S. Pat. No.
8,114,989, and International Publication No. WO 2006/123113, all of
which are incorporated by reference in their entireties herein.
Exemplary Trk inhibitors include AZ623, described in Cancer
117(6):1321-1391, 2011; AZD6918, described in Cancer Biol. Ther.
16(3):477-483, 2015; AZ64, described in Cancer Chemother.
Pharmacol. 70:477-486, 2012; AZ-23
((S)-5-Chloro-N2-(1-(5-fluoropyridin-2-yl)ethyl)-N4-(5-isopropoxy-1H-pyra-
zol-3-yl)pyrimidine-2,4-diamine), described in Mol. Cancer Ther.
8:1818-1827, 2009; and AZD7451; each of which is incorporated by
reference in its entirety.
[0556] A Trk inhibitor can include those described in U.S. Pat.
Nos. 7,615,383; 7,384,632; 6,153,189; 6,027,927; 6,025,166;
5,910,574; 5,877,016; and 5,844,092, each of which is incorporated
by reference in its entirety.
[0557] Further examples of Trk inhibitors include CEP-751,
described in Int. J. Cancer 72:672-679, 1997; CT327, described in
Acta Derm. Venereol. 95:542-548, 2015; compounds described in
International Publication No. WO 2012/034095; compounds described
in U.S. Pat. No. 8,673,347 and International Publication No. WO
2007/022999; compounds described in U.S. Pat. No. 8,338,417;
compounds described in International Publication No. WO
2016/027754; compounds described in U.S. Pat. No. 9,242,977;
compounds described in U.S. Publication No. 2016/0000783; sunitinib
(N-(2-diethylaminoethyl)-5-[(Z)-(5-fluoro-2-oxo-1H-indol-3-ylidene)methyl-
]-2,4-dimethyl-1H-pyrrole-3-carboxamide), as described in PLoS One
9:e95628, 2014; compounds described in International Publication
No. WO 2011/133637; compounds described in U.S. Pat. No. 8,637,256;
compounds described in Expert. Opin. Ther. Pat. 24(7):731-744,
2014; compounds described in Expert Opin. Ther. Pat. 19(3):305-319,
2009; (R)-2-phenylpyrrolidine substituted imadizopyridazines, e.g.,
(4-((5-chloro-4-(methylamino)-7H-pyrrolo[2,3-d]pyrimidin-2-yl)amino)-3-me-
thoxyphenyl)(morpholino)methanone as described in ACS Med. Chem.
Lett. 6(5):562-567, 2015; GTx-186 and others, as described in PLoS
One 8(12):e83380, 2013; K252a
((9S-(9.alpha.,10.beta.,12.alpha.))-2,3,9,10,11,12-hexahydro-10-hydroxy-1-
0-(methoxycarbonyl)-9-methyl-9,12-epoxy-1H-diindolo[1,2,3-fg:3',2',1'-kl]p-
yrrolo[3,4-i][1,6]benzodiazocin-1-one), as described in Mol. Cell
Biochem. 339(1-2):201-213, 2010; 4-aminopyrazolylpyrimidines, e.g.,
AZ-23
(((S)-5-chloro-N2-(1-(5-fluoropyridin-2-yl)ethyl)-N4-(5-isopropoxy-1H-pyr-
azol-3-yl)pyrimidine-2,4-diamine)), as described in J. Med. Chem.
51(15):4672-4684, 2008; PHA-739358 (danusertib), as described in
Mol. Cancer Ther. 6:3158, 2007; Go 6976
(5,6,7,13-tetrahydro-13-methyl-5-oxo-12H-indolo[2,3-a]pyrrolo[3,4-c]carba-
zole-12-propanenitrile), as described in J. Neurochem. 72:919-924,
1999; GW441756
((3Z)-3-[(1-methylindol-3-yl)methylidene]-1H-pyrrolo[3,2-b]pyrid-
in-2-one), as described in IJAE 115:117, 2010; milciclib
(PHA-848125AC), described in J. Carcinog. 12:22, 2013; AG-879
((2E)-3-[3,5-Bis(1,1-dimethylethyl)-4-hydroxyphenyl]-2-cyano-2-propenethi-
oamide); altiratinib
(N-(4-((2-(cyclopropanecarboxamido)pyridin-4-yl)oxy)-2,5-difluorophenyl)--
N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide); cabozantinib
(N-(4-((6,7-Dimethoxyquinolin-4-yl)oxy)phenyl)-N'-(4-fluorophenyl)cyclopr-
opane-1,1-dicarboxamide); lestaurtinib
((5S,6S,8R)-6-Hydroxy-6-(hydroxymethyl)-5-methyl-7,8,14,15-tetrahydro-5H--
16-oxa-4b,8a,
14-triaza-5,8-methanodibenzo[b,h]cycloocta[jkl]cyclopenta[e]-as-indacen-1-
3(6H)-one); dovatinib
(4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]quin-
olin-2(1H)-one mono 2-hydroxypropanoate hydrate); sitravatinib
(N-(3-fluoro-4-((2-(5-(((2-methoxyethyl)amino)methyl)pyridin-2-yl)thieno[-
3,2-b]pyridin-7-yl)oxy)phenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarbox-
amide); ONO-5390556; regorafenib
(4-[4-({[4-Chloro-3-(trifluoromethyl)phenyl]carbamoyl}amino)-3-fluorophen-
oxy]-N-methylpyridine-2-carboxamide hydrate); VSR-902A; all of the
references above are incorporated by reference in their entireties
herein.
[0558] The ability of a Trk inhibitor to act as a TrkA, TrkB,
and/or Trk C inhibitor may be tested using the assays described in
Examples A and B in U.S. Pat. No. 8,513,263, which is incorporated
herein by reference.
[0559] In some embodiments, signal transduction pathway inhibitors
include Ras-Raf-MEK-ERK pathway inhibitors (e.g., binimetinib,
selumetinib, encorafinib, sorafenib, trametinib, and vemurafenib),
PI3K-Akt-mTOR-S6K pathway inhibitors (e.g. everolimus, rapamycin,
perifosine, temsirolimus), and other kinase inhibitors, such as
baricitinib, brigatinib, capmatinib, danusertib, ibrutinib,
milciclib, quercetin, regorafenib, ruxolitinib, semaxanib, AP32788,
BLU285, BLU554, INCB39110, INCB40093, INCB50465, INCB52793,
INCB54828, MGCD265, NMS-088, NMS-1286937, PF 477736
((R)-amino-N-[5,6-dihydro-2-(1-methyl-1H-pyrazol-4-yl)-6-oxo-1Hpyrrolo[4,-
3,2-ef][2,3]benzodiazepin-8-yl]-cyclohexaneacetamide), PLX3397,
PLX7486, PLX8394, PLX9486, PRN1008, PRN1371, RXDX103, RXDX106,
RXDX108, and TG101209
(N-tert-butyl-3-(5-methyl-2-(4-(4-methylpiperazin-1-yl)phenylami-
no)pyrimidin-4-ylamino)benzenesulfonamide).
[0560] Non-limiting examples of checkpoint inhibitors include
ipilimumab, tremelimumab, nivolumab, pidilizumab, MPDL3208A,
MEDI4736, MSB0010718C, BMS-936559, BMS-956559, BMS-935559
(MDX-1105), AMP-224, and pembrolizumab.
[0561] In some embodiments, cytotoxic chemotherapeutics are
selected from arsenic trioxide, bleomycin, cabazitaxel,
capecitabine, carboplatin, cisplatin, cyclophosphamide, cytarabine,
dacarbazine, daunorubicin, docetaxel, doxorubicin, etoposide,
fluorouracil, gemcitabine, irinotecan, lomustine, methotrexate,
mitomycin C, oxaliplatin, paclitaxel, pemetrexed, temozolomide, and
vincristine.
[0562] Non-limiting examples of angiogenesis-targeted therapies
include aflibercept and bevacizumab.
[0563] In some embodiments, immune-targeted agents are selected
from aldesleukin, interferon alfa-2b, ipilimumab, lambrolizumab,
nivolumab, prednisone, and sipuleucel-T.
[0564] Non-limiting examples of radiotherapy include radioiodide
therapy, external-beam radiation, and radium 223 therapy.
[0565] Additional kinase inhibitors include those described in, for
example, U.S. Pat. Nos. 7,514,446; 7,863,289; 8,026,247; 8,501,756;
8,552,002; 8,815,901; 8,912,204; 9,260,437; 9,273,051; U.S.
Publication No. US 2015/0018336; International Publication No. WO
2007/002325; WO 2007/002433; WO 2008/080001; WO 2008/079906; WO
2008/079903; WO 2008/079909; WO 2008/080015; WO 2009/012283; WO
2009/143018; WO 2009/143024; WO 2009/152083; WO 2010/111527; WO
2012/109075; WO 2014/194127; WO 2015/112806; WO 2007/110344; WO
2009/071480; WO 2009/118411; WO 2010/031816; WO 2010/145998; WO
2011/092120; WO 2012/101032; WO 2012/139930; WO 2012/143248; WO
2012/152763; WO 2013/014039; WO 2013/102059; WO 2013/050448; WO
2013/050446; WO 2014/019908; WO 2014/072220; WO 2014/184069; and WO
2016/075224 all of which are hereby incorporated by reference in
their entireties.
[0566] Further examples of kinase inhibitors include those
described in, for example, WO 2016/081450; WO 2016/022569; WO
2016/011141; WO 2016/011144; WO 2016/011147; WO 2015/191667; WO
2012/101029; WO 2012/113774; WO 2015/191666; WO 2015/161277; WO
2015/161274; WO 2015/108992; WO 2015/061572; WO 2015/058129; WO
2015/057873; WO 2015/017528; WO/2015/017533; WO 2014/160521; and WO
2014/011900, each of which is hereby incorporated by reference in
its entirety.
[0567] Accordingly, also provided herein is a method of treating
cancer, comprising administering to a patient in need thereof a
pharmaceutical combination for treating cancer which comprises (a)
a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof, (b) an additional therapeutic agent, and
(c) optionally at least one pharmaceutically acceptable carrier for
simultaneous, separate or sequential use for the treatment of
cancer, wherein the amounts of the compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof and the
additional therapeutic agent are together effective in treating the
cancer.
[0568] In some embodiments, the additional therapeutic agent(s)
includes any one of the above listed therapies or therapeutic
agents which are standards of care in cancers wherein the cancer
has a dysregulation of a RET gene, a RET protein, or expression or
activity, or level of any of the same.
[0569] These additional therapeutic agents may be administered with
one or more doses of the compound of General Formula I, or a
pharmaceutically acceptable salt or solvate thereof, or
pharmaceutical composition thereof, as part of the same or separate
dosage forms, via the same or different routes of administration,
and/or on the same or different administration schedules according
to standard pharmaceutical practice known to one skilled in the
art.
[0570] Also provided herein is (i) a pharmaceutical combination for
treating a cancer (e.g., a RET-associated cancer (e.g., a
RET-associated cancer having one or more RET inhibitor resistance
mutations)) in a patient in need thereof, which comprises (a) a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, (b) at least one additional therapeutic agent
(e.g., any of the exemplary additional therapeutic agents described
herein or known in the art), and (c) optionally at least one
pharmaceutically acceptable carrier for simultaneous, separate or
sequential use for the treatment of cancer, wherein the amounts of
the compound of General Formula I or pharmaceutically acceptable
salt or solvate thereof and of the additional therapeutic agent are
together effective in treating the cancer; (ii) a pharmaceutical
composition comprising such a combination; (iii) the use of such a
combination for the preparation of a medicament for the treatment
of cancer; and (iv) a commercial package or product comprising such
a combination as a combined preparation for simultaneous, separate
or sequential use; and to a method of treatment of cancer a patient
in need thereof. In one embodiment the patient is a human.
[0571] The term "pharmaceutical combination", as used herein,
refers to a pharmaceutical therapy resulting from the mixing or
combining of more than one active ingredient and includes both
fixed and non-fixed combinations of the active ingredients. The
term "fixed combination" means that a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof and at
least one additional therapeutic agent (e.g., a chemotherapeutic
agent), are both administered to a patient simultaneously in the
form of a single composition or dosage. The term "non-fixed
combination" means that a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof and at least
one additional therapeutic agent (e.g., chemotherapeutic agent) are
formulated as separate compositions or dosages such that they may
be administered to a patient in need thereof simultaneously,
concurrently or sequentially with variable intervening time limits,
wherein such administration provides effective levels of the two or
more compounds in the body of the patient. These also apply to
cocktail therapies, e.g. the administration of three or more active
ingredients
[0572] Accordingly, also provided herein is a method of treating a
cancer (e.g., a RET-associated cancer (e.g., a RET-associated
cancer having one or more RET inhibitor resistance mutations)),
comprising administering to a patient in need thereof a
pharmaceutical combination for treating cancer which comprises (a)
a compound of General Formula I or pharmaceutically acceptable salt
or solvate thereof, (b) an additional therapeutic agent, and (c)
optionally at least one pharmaceutically acceptable carrier for
simultaneous, separate or sequential use for the treatment of
cancer, wherein the amounts of the compound of General Formula I or
pharmaceutically acceptable salt or solvate thereof and the
additional therapeutic agent are together effective in treating the
cancer. In one embodiment, the compound of General Formula I or
pharmaceutically acceptable salt or solvate thereof, and the
additional therapeutic agent are administered simultaneously as
separate dosages. In one embodiment, the compound of General
Formula I or pharmaceutically acceptable salt or solvate thereof,
and the additional therapeutic agent are administered as separate
dosages sequentially in any order, in jointly therapeutically
effective amounts, e.g. in daily or intermittently dosages. In one
embodiment, compound of General Formula I or pharmaceutically
acceptable salt or solvate thereof, and the additional therapeutic
agent are administered simultaneously as a combined dosage.
[0573] Also provided herein is a method of treating a disease or
disorder mediated by RET (e.g., dysregulation of RET gene, a RET
kinase, or expression or activity or level of any of the same,
e.g., one or more RET inhibitor resistance mutations) in a patient
in need of such treatment, the method comprising administering to
the patient a therapeutically effective amount of a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof or a pharmaceutical composition thereof. A disease or
disorder mediated by RET (e.g., dysregulation of RET gene, a RET
kinase, or expression or activity or level of any of the same,
e.g., one or more RET inhibitor resistance mutations) can include
any disease, disorder or condition that is directly or indirectly
linked to expression or activity of RET, including overexpression
and/or abnormal activity levels. In one embodiment, the disease is
cancer (e.g., a RET-associated cancer). In one embodiment, the
cancer is any of the cancers or RET-associated cancers described
herein.
[0574] Although the genetic basis of tumorigenesis may vary between
different cancer types, the cellular and molecular mechanisms
required for metastasis appear to be similar for all solid tumor
types. During a metastatic cascade, the cancer cells lose growth
inhibitory response, undergo alterations in adhesiveness and
produce enzymes that can degrade extracellular matrix components.
This leads to detachment of tumor cells from the original tumor,
infiltration into the circulation through newly formed vasculature,
migration and extravasation of the tumor cells at favorable distant
sites where they may form colonies. A number of genes have been
identified as being promoters or suppressors of metastasis. For
example, overexpression of glial cell-derived neurotrophic factor
(GDNF) and its RET receptor tyrosine kinase have been correlated
with cancer proliferation and metastasis. See, e.g., Zeng, Q. et
al. J. Int. Med. Res. (2008) 36(4): 656-64.
[0575] Accordingly, also provided herein are methods for
inhibiting, preventing, aiding in the prevention, or decreasing the
symptoms of metastasis of a cancer in a patient in need thereof,
the method comprising administering to the patient a
therapeutically effective amount of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof or a
pharmaceutical composition thereof. Such methods can be used in the
treatment of one or more of the cancers described herein. See,
e.g., US Publication No. 2013/0029925; International Publication
No. WO 2014/083567; and U.S. Pat. No. 8,568,998. In some
embodiments, the cancer is a RET-associated cancer. In some
embodiments, the compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof is used in
combination with an additional therapy or another therapeutic
agent, including a chemotherapeutic agent, such as a kinase
inhibitor.
[0576] The term "metastasis" is an art known term and means the
formation of an additional tumor (e.g., a solid tumor) at a site
distant from a primary tumor in a subject or patient, where the
additional tumor includes the same or similar cancer cells as the
primary tumor.
[0577] Also provided are methods of decreasing the risk of
developing a metastasis or an additional metastasis in a patient
having a RET-associated cancer (e.g., a RET-associated cancer
having one or more RET inhibitor resistance mutations) that
include: selecting, identifying, or diagnosing a patient as having
a RET-associated cancer (e.g., a RET-associated cancer having one
or more RET inhibitor resistance mutations), and administering a
therapeutically effective amount of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof to the
patient selected, identified, or diagnosed as having a
RET-associated cancer. Also provided are methods of decreasing the
risk of developing a metastasis or an additional metastasis in a
patient having a RET-associated cancer (e.g., a RET-associated
cancer having one or more RET inhibitor resistance mutations) that
includes administering a therapeutically effective amount of a
compound of General Formula I or a pharmaceutically acceptable salt
or solvent thereof to a patient having a RET-associated cancer. The
decrease in the risk of developing a metastasis or an additional
metastasis in a patient having a RET-associated cancer can be
compared to the risk of developing a metastasis or an additional
metastasis in the patient prior to treatment, or as compared to a
patient or a population of patients having a similar or the same
RET-associated cancer that has received no treatment or a different
treatment.
[0578] The phrase "risk of developing a metastasis" means the risk
that a subject or patient having a primary tumor will develop an
additional tumor (e.g., a solid tumor) at a site distant from a
primary tumor in a subject or patient over a set period of time,
where the additional tumor includes the same or similar cancer
cells as the primary tumor. Methods for reducing the risk of
developing a metastasis in a subject or patient having a cancer are
described herein.
[0579] The phrase "risk of developing additional metastases" means
the risk that a subject or patient having a primary tumor and one
or more additional tumors at sites distant from the primary tumor
(where the one or more additional tumors include the same or
similar cancer cells as the primary tumor) will develop one or more
further tumors distant from the primary tumor, where the further
tumors include the same or similar cancer cells as the primary
tumor. Methods for reducing the risk of developing additional
metastasis are described herein.
[0580] In some embodiments, the presence of one or more RET
inhibitor resistance mutations in a tumor causes the tumor to be
more resistant to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof (e.g., a substitution at amino acid position
804, e.g., V804M, V804L, or V804E). Methods useful when a RET
inhibitor resistance mutation causes the tumor to be more resistant
to treatment with a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
are described below. For example, provided herein are methods of
treating a subject having a cancer that include: identifying a
subject having a cancer cell that has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, e.g., a substitution at amino acid position
804, e.g., V804M, V804L, or V804E); and administering to the
identified subject a treatment that does not include a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy (e.g., a treatment that includes a compound of General
Formula I or a pharmaceutically acceptable salt or solvate
thereof). Also provided are methods of treating a subject
identified as having a cancer cell that has one or more RET
inhibitor resistance mutations (that confer increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, e.g., a substitution at amino
acid position 804, e.g., V804M, V804L, or V804E) that include
administering to the subject a treatment that does not include a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy (e.g., a treatment that includes a compound of General
Formula I or a pharmaceutically acceptable salt or solvate
thereof). Also provided are methods of selecting a treatment for a
subject having a cancer that include: identifying a subject having
a cancer cell that has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, e.g., a substitution at amino acid position 804, e.g.,
V804M, V804L, or V804E); and selecting a treatment that does not
include a RET inhibitors that is not a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof as a
monotherapy for the identified subject (e.g., a treatment that
includes a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof). Also provided are methods of
selecting a treatment for a subject having a cancer that include:
selecting a treatment that does not include a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy (e.g., a
treatment that includes a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof) for a subject
identified as having a cancer cell that has one or more RET
inhibitor resistance mutations (that confer increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, e.g., a substitution at amino
acid position 804, e.g., V804M, V804L, or V804E). Also provided are
methods of selecting a subject having a cancer for a treatment that
does not include a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
as a monotherapy that include: identifying a subject having a
cancer cell that has one or more RET inhibitor resistance mutations
(that confer increased resistance to a cancer cell or tumor to
treatment with a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E); and selecting the identified subject for a
treatment that does not include a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof as a monotherapy (e.g., a treatment that
includes a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof). Also provided are methods of
selecting a subject having a cancer for a treatment that does not
include a RET inhibitor that is not a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof as a
monotherapy that include: selecting a subject identified as having
a cancer cell that has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, e.g., a substitution at amino acid position 804, e.g.,
V804M, V804L, or V804E), for a treatment that does not include a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy (e.g., a treatment that includes a compound of General
Formula I or a pharmaceutically acceptable salt or solvate
thereof). Also provided are methods of determining the likelihood
that a subject having a cancer will have a positive response to
treatment with a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
as a monotherapy that include: determining whether a cancer cell in
a sample obtained from the subject has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, e.g., a substitution at amino acid position
804, e.g., V804M, V804L, or V804E); and determining that a subject
having a cancer cell that has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, e.g., a substitution at amino acid position 804, e.g.,
V804M, V804L, or V804E), has a decreased likelihood of having a
positive response to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof as a monotherapy. Also provided are methods of
determining the likelihood that a subject having cancer will have a
positive response to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof as a monotherapy that include: determining that
a subject having a cancer cell that has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, e.g., a substitution at amino acid position
804, e.g., V804M, V804L, or V804E), has a decreased likelihood of
having a positive response to treatment with a RET inhibitor that
is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy. Also provided
are methods of predicting the efficacy of treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy in a subject having cancer that include: determining
whether a cancer cell in a sample obtained from the subject has one
or more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E); and determining that treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy is less likely
to be effective in a subject having a cancer cell in a sample
obtained from the subject that has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, e.g., a substitution at amino acid position
804, e.g., V804M, V804L, or V804E). Also provided are methods of
predicting the efficacy of treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy in a subject
having cancer that include: determining that treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy is less likely to be effective in a subject having a
cancer cell in a sample obtained from the subject that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E).
[0581] Also provided are methods of treating a subject having a
cancer that include: (a) administering one or more doses of a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, to the subject
for a period of time; (b) after (a), determining whether a cancer
cell in a sample obtained from the subject has at least one RET
inhibitor resistance mutation (that confers increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof of (a), e.g., a substitution at
amino acid position 804, e.g., V804M, V804L, or V804E); and (c)
administering a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy or in
conjunction with another anticancer agent (e.g., any anticancer
agent known in the art, e.g., another RET inhibitor, e.g., the same
RET inhibitor administered in step (a)) to the subject if the
subject has a cancer cell that has at least one RET inhibitor
resistance mutation (that confers increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof of (a), e.g., a substitution at amino acid
position 804, e.g., V804M, V804L, or V804E); or (d) administering
additional doses of the RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof of step (a) to the subject if the subject has a cancer cell
that does not have a RET inhibitor resistance mutation (that
confers increased resistance to a cancer cell or tumor to treatment
with a RET inhibitor that is not a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof of (a), e.g.,
a substitution at amino acid position 804, e.g., V804M, V804L, or
V804E). In some embodiments, where the subject is administered
additional doses of the RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof of step (a), the subject can also be administered another
anticancer agent (e.g., another RET inhibitor, e.g., a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof).
[0582] Also provided are methods of treating a subject having a
cancer that include: (a) administering one or more doses of a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, to the subject
for a period of time; (b) after (a), determining whether a cancer
cell in a sample obtained from the subject has at least one RET
inhibitor resistance mutation (that confers increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof of (a), e.g., a substitution at
amino acid position 804, e.g., V804M, V804L, or V804E); and (c)
administering a different RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof (different from the RET inhibitor administered in (a)) as a
monotherapy or in conjunction with another anticancer agent (e.g.,
any anticancer agent known in the art, e.g., another RET inhibitor,
e.g., the same RET inhibitor administered in (a)) to the subject if
the subject has a cancer cell that has at least one RET inhibitor
resistance mutation (that confers increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof of (a), e.g., a substitution at amino acid
position 804, e.g., V804M, V804L, or V804E); or (d) administering
additional doses of the RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof of step (a) to the subject if the subject has a cancer cell
that does not have a RET inhibitor resistance mutation (that
confers increased resistance to a cancer cell or tumor to treatment
with a RET inhibitor that is not a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof of (a), e.g.,
a substitution at amino acid position 804, e.g., V804M, V804L, or
V804E). In some embodiments, where the subject is administered
additional doses of the RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof of step (a), the subject can also be administered another
anticancer agent (e.g., another RET inhibitor, e.g., a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof).
[0583] Also provided are methods of treating a subject having a
cancer that include: (a) determining whether a cancer cell in a
sample obtained from a subject having a cancer and previously
administered one or more doses of a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof that was previously administered to the subject, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E); and (c) administering a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy or in conjunction with another anticancer agent (e.g.,
any anticancer agent known in the art, e.g., another RET inhibitor,
e.g., the same RET inhibitor previously administered to the
subject) to the subject if the subject has a cancer cell that has
at least one RET inhibitor resistance mutation (that confers
increased resistance to a cancer cell or tumor to treatment with a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof that was
previously administered to the subject, e.g., a substitution at
amino acid position 804, e.g., V804M, V804L, or V804E); or (d)
administering additional doses of the RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof previously administered to the subject if the
subject has cancer cell that does not have a RET inhibitor
resistance mutation (that confers increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof previously administered to the subject, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E). In some embodiments, where the subject is administered
additional doses of the RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof previously administered to the subject, the subject can
also be administered another anticancer agent (e.g., another RET
inhibitor, e.g., a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof).
[0584] Also provided are methods of treating a subject having a
cancer that include: (a) determining whether a cancer cell in a
sample obtained from a subject having a cancer and previously
administered one or more doses of a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof that was previously administered to the subject, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E); and (b) administering a different RET inhibitor that is not
a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof (different from the RET inhibitor
previously administered to the subject) as a monotherapy or in
conjunction with another anticancer agent (e.g., any anticancer
agent known in the art, e.g., another RET inhibitor, e.g., the same
RET inhibitor previously administered to the subject) to the
subject if the subject has a cancer cell that has at least one RET
inhibitor resistance mutation (that confers increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof that was previously administered
to the subject, e.g., a substitution at amino acid position 804,
e.g., V804M, V804L, or V804E); or (d) administering additional
doses of the RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
previously administered to the subject if the subject has cancer
cell that does not have a RET inhibitor resistance mutation (that
confers increased resistance to a cancer cell or tumor to treatment
with a RET inhibitor that is not a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof that was
previously administered to the subject, e.g., a substitution at
amino acid position 804, e.g., V804M, V804L, or V804E). In some
embodiments, where the subject is administered additional doses of
the RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof previously
administered to the subject, the subject can also be administered
another anticancer agent (e.g., another RET inhibitor, e.g., a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof).
[0585] Also provided are methods of selecting a treatment for a
subject having a cancer that include (a) administering one or more
doses of a RET inhibitor that is not a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof to the
subject for a period of time; (b) after (a), determining whether a
cancer cell in a sample obtained from the subject has at least one
RET inhibitor resistance mutation (that confers increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of (a), e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E); and (c) selecting a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy or in conjunction with another anticancer agent (e.g.,
any anticancer agent known in the art, e.g., another RET inhibitor,
e.g., the same RET inhibitor administered in step (a)) for the
subject if the subject has a cancer cell that has one or more RET
inhibitor resistance mutations (that confer increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, e.g., a substitution at amino
acid position 804, e.g., V804M, V804L, or V804E); or (d) selecting
additional doses of the RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof of step (a) for the subject if the subject has a cancer
cell that does not have a RET inhibitor resistance mutation (that
confers increased resistance to a cancer cell or tumor to treatment
with a RET inhibitor that is not a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof of (a), e.g.,
a substitution at amino acid position 804, e.g., V804M, V804L, or
V804E). In some embodiments, when additional doses of the RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of step (a) are
selected for the subject, the method can further include selecting
doses of another anticancer agent (e.g., another RET inhibitor,
e.g., a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof) for the subject.
[0586] Also provided are methods of selecting a treatment for a
subject having a cancer that include (a) administering one or more
doses of a RET inhibitor that is not a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof to the
subject for a period of time; (b) after (a), determining whether a
cancer cell in a sample obtained from the subject has at least one
RET inhibitor resistance mutation (that confers increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of (a), e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E); and (c) selecting a different RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof (different from the RET inhibitor administered
to the subject in (a)) as a monotherapy or in conjunction with
another anticancer agent (e.g., any anticancer agent known in the
art, e.g., another RET inhibitor, e.g., the same RET inhibitor
administered to the subject in (a)) for the subject if the subject
has a cancer cell that has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof of (a), e.g., a substitution at amino acid position 804,
e.g., V804M, V804L, or V804E); or (d) selecting additional doses of
the RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of step (a) for
the subject if the subject has a cancer cell that does not have a
RET inhibitor resistance mutation (that confers increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of (a), e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E). In some embodiments, when additional doses of the RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of step (a) are
selected for the subject, the method can further include selecting
doses of another anticancer agent (e.g., another RET inhibitor,
e.g., a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof) for the subject.
[0587] Also provided are methods of method of selecting a treatment
for a subject having a cancer that include (a) determining whether
a cancer cell in a sample obtained from a subject having a cancer
and previously administered one or more doses of a RET inhibitor
that is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof that was previously administered to the subject,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E); (b) selecting a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof as a
monotherapy or in conjunction with another anticancer agent (e.g.,
any anticancer agent known in the art, e.g., another RET inhibitor,
e.g., the same RET inhibitor previously administered to the
subject) for the subject if the subject has a cancer cell that has
at least one RET inhibitor resistance mutation (that confers
increased resistance to a cancer cell or tumor to treatment with a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof that was
previously administered to the subject, e.g., a substitution at
amino acid position 804, e.g., V804M, V804L, or V804E); or (c)
selecting additional doses of the RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof previously administered to the subject if the
subject has a cancer cell that does not have a RET inhibitor
resistance mutation (that confers increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof that was previously administered to the subject,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E). In some embodiments, when additional doses of the
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate previously administered
to the subject are selected for the subject, the method can further
include selecting doses of another anticancer agent (e.g., another
RET inhibitor, e.g., a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof) for the
subject.
[0588] Also provided are methods of method of selecting a treatment
for a subject having a cancer that include (a) determining whether
a cancer cell in a sample obtained from a subject having a cancer
and previously administered one or more doses of a RET inhibitor
that is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof that was previously administered to the subject,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E); (b) selecting a different RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof (different from the RET
inhibitor previously administered to the subject) as a monotherapy
or in conjunction with another anticancer agent (e.g., any
anticancer agent known in the art, e.g., another RET inhibitor,
e.g., the same RET inhibitor previously administered to the
subject) for the subject if the subject has a cancer cell that has
at least one RET inhibitor resistance mutation (that confers
increased resistance to a cancer cell or tumor to treatment with a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof that was
previously administered to the subject, e.g., a substitution at
amino acid position 804, e.g., V804M, V804L, or V804E); or (c)
selecting additional doses of the RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof previously administered to the subject if the
subject has a cancer cell that does not have a RET inhibitor
resistance mutation (that confers increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof that was previously administered to the subject,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E). In some embodiments, when additional doses of the
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate previously administered
to the subject are selected for the subject, the method can further
include selecting doses of another anticancer agent (e.g., another
RET inhibitor, e.g., a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof) for the
subject.
[0589] Also provided are methods of determining a subject's risk
for developing a cancer that has some resistance to a RET inhibitor
that is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof that include: determining
whether a cell in a sample obtained from the subject has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E); and identifying a subject having a cell that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., a
substitution at amino acid position 804, e.g., V804M, V804L, or
V804E), as having an increased likelihood of developing a cancer
that has some resistance to a RET inhibitor that is not a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof. Also provided are methods of determining a
subject's risk for developing a cancer that has some resistance to
a RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof that include:
identifying a subject having a cell that has one or more RET
inhibitor resistance mutations (that confer increased resistance to
a cancer cell or tumor to treatment with a RET inhibitor that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, e.g., a substitution at amino
acid position 804, e.g., V804M, V804L, or V804E), as having an
increased likelihood of developing a cancer that has some
resistance to a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof.
Also provided are methods of determining the presence of a cancer
that has some resistance to a RET inhibitor that is not a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof that includes: determining whether a cancer cell in
a sample obtained from the subject has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, e.g., a substitution at amino acid position
804, e.g., V804M, V804L, or V804E); and determining that a subject
having a cancer cell that has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a RET inhibitor that is not a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, e.g., a substitution at amino acid position 804, e.g.,
V804M, V804L, or V804E), has a cancer that has some resistance to a
RET inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof. Also provided
are methods of determining the presence of a cancer that has some
resistance to a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
in a subject that include: determining that a subject having a
cancer cell that has one or more RET inhibitor resistance mutations
(that confer increased resistance to a cancer cell or tumor to
treatment with a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E), has a cancer that has some resistance to a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof.
[0590] In some embodiments of any of the methods described herein,
a RET inhibitor resistance mutation that confers increased
resistance to a cancer cell or tumor to treatment with a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, can be any of
the RET inhibitor resistance mutations listed in Table 3 or 4
(e.g., a substitution at amino acid position 804, e.g., V804M,
V804L, or V804E).
[0591] In some embodiments, the presence of one or more RET
inhibitor resistance mutations in a tumor causes the tumor to be
more resistant to treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof. Methods
useful when a RET inhibitor resistance mutation causes the tumor to
be more resistant to treatment with a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof are
described below. For example, provided herein are methods of
treating a subject having a cancer that include: identifying a
subject having a cancer cell that has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof); and
administering to the identified subject a treatment that does not
include a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy. Also provided
are methods of treating a subject identified as having a cancer
cell that has one or more RET inhibitor resistance mutations (that
confer increased resistance to a cancer cell or tumor to treatment
with a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof) that include administering to
the subject a treatment that does not include a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
as a monotherapy. Also provided are methods of selecting a
treatment for a subject having a cancer that include: identifying a
subject having a cancer cell that has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof); and
selecting a treatment that does not include a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
as a monotherapy for the identified subject. Also provided are
methods of selecting a treatment for a subject having a cancer that
include: selecting a treatment that does not include a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof as a monotherapy for a subject identified as having a
cancer cell that has one or more RET inhibitor resistance mutations
(that confer increased resistance to a cancer cell or tumor to
treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof). Also provided
are methods of selecting a subject having a cancer for a treatment
that does not include a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy that include: identifying a subject having a cancer
cell that has one or more RET inhibitor resistance mutations (that
confer increased resistance to a cancer cell or tumor to treatment
with a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof); and selecting the identified
subject for a treatment that does not include a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
as a monotherapy. Also provided are methods of selecting a subject
having a cancer for a treatment that does not include a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof as a monotherapy that include: selecting a subject
identified as having a cancer cell that has one or more RET
inhibitor resistance mutations (that confer increased resistance to
a cancer cell or tumor to treatment with a compound of General
Formula I or a pharmaceutically acceptable salt or solvate
thereof), for a treatment that does not include a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof as a monotherapy. Also provided are methods of determining
the likelihood that a subject having a cancer will have a positive
response to treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy that include: determining whether a cancer cell in a
sample obtained from the subject has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof); and
determining that a subject having a cancer cell that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof), has a decreased likelihood of having a positive
response to treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy. Also provided are methods of determining the
likelihood that a subject having cancer will have a positive
response to treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy that include: determining that a subject having a
cancer cell that has one or more RET inhibitor resistance mutations
(that confer increased resistance to a cancer cell or tumor to
treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof), has a
decreased likelihood of having a positive response to treatment
with a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof as a monotherapy. Also provided
are methods of predicting the efficacy of treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof as a monotherapy in a subject having cancer that
include: determining whether a cancer cell in a sample obtained
from the subject has one or more RET inhibitor resistance mutations
(that confer increased resistance to a cancer cell or tumor to
treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof); and
determining that treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof as a
monotherapy is less likely to be effective in a subject having a
cancer cell in a sample obtained from the subject that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof). Also provided are methods of predicting the
efficacy of treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy in a subject having cancer that include: determining
that treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof as a
monotherapy is less likely to be effective in a subject having a
cancer cell in a sample obtained from the subject that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof).
[0592] Also provided are methods of treating a subject having a
cancer that include: (a) administering one or more doses of a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof for a period of time; (b) after (a), determining
whether a cancer cell in a sample obtained from the subject has one
or more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof of (a)); and (c) administering a different RET
inhibitor (e.g., a compound that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
or a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof that is different from that administered in
step (a)) as a monotherapy or in conjunction with another
anticancer agent (e.g., any of the RET inhibitors described herein,
e.g., a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, e.g., the same compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof administered in (a)) to a subject having a cancer cell that
has one or more RET inhibitor resistance mutations (that confer
increased resistance to a cancer cell or tumor to treatment with a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof of (a)); or (d) administering additional doses
of a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof of step (a) to a subject having a cancer
cell that does not have a RET inhibitor resistance mutation (that
confers increased resistance to a cancer cell or tumor to treatment
with a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof of (a)). In some embodiments,
where the subject is administered additional doses of the compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof of step (a), the subject can also be administered
another anticancer agent (e.g., another RET inhibitor, e.g., a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, or a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof that is different from the compound of step
(a)).
[0593] Also provided are methods of treating a subject having a
cancer that include: (a) determining whether a cancer cell in a
sample obtained from a subject having a cancer and previously
administered one or more doses of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof, has one
or more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof that was previously administered to the subject);
(b) administering a different RET inhibitor (e.g., a compound that
is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, or a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
that is different from the compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof previously
administered to the subject) as a monotherapy or in conjunction
with another anticancer agent (e.g., any of the RET inhibitors
described herein, e.g., a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., the same
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof previously administered to the subject) to a
subject having a cancer cell that has one or more RET inhibitor
resistance mutations (that confer increased resistance to a cancer
cell or tumor to treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof that was
previously administered to the subject); or (c) administering
additional doses of a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof previously
administered to a subject having a cancer cell that does not have a
RET inhibitor resistance mutation (that confers increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof that was previously administered to the subject).
In some embodiments, where the subject is administered additional
doses of the compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof of step (a), the subject can
also be administered another anticancer agent (e.g., another RET
inhibitor, e.g., a RET inhibitor that is not a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
or a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof that is different from the compound of step
(a)).
[0594] Also provided are methods of selecting a treatment for a
subject having a cancer that include: (a) administering one or more
doses of a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof to the subject for a period of
time; (b) after (a), determining whether a cancer cell in a sample
obtained from the subject has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof of (a)); and
(c) selecting a different RET inhibitor (e.g., a compound that is
not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, or a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
that is different from that administered in step (a)) as a
monotherapy or in conjunction with another anticancer agent (e.g.,
any of the RET inhibitors described herein, e.g., a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof, e.g., the same compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof administered in
(a)) for the subject if the subject has a cancer cell that has a
RET inhibitor resistance mutation (that confer increased resistance
to a cancer cell or tumor to treatment with a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
of (a)); or (d) selecting additional doses of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
of step (a) for the subject if the subject has a cancer cell that
does not have a RET inhibitor resistance mutation (that confers
increased resistance to a cancer cell or tumor to treatment with a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof of (a)). In some embodiments, where additional
doses of a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof of step (a) are selected for the
subject, the method can also include further selecting another
anticancer agent (e.g., another RET inhibitor, e.g., a RET
inhibitor that is not a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, or a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof that is different from the compound of step
(a)).
[0595] Also provided are methods of selecting a treatment for a
subject having a cancer that include: (a) determining whether a
cancer cell in a sample obtained from a subject having a cancer and
previously administered one or more doses of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
has one or more RET inhibitor resistance mutations (that confer
increased resistance to a cancer cell or tumor to treatment with a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof that was previously administered to the
subject); (b) selecting a different RET inhibitor (e.g., a compound
that is not a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof, or a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof
that is different from the compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof previously
administered to the subject) as a monotherapy or in conjunction
with another anticancer agent (e.g., any of the RET inhibitors
described herein, e.g., a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, e.g., the same
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof previously administered to the subject) for the
subject if the subject has a cancer cell that has a RET inhibitor
resistance mutation (that confers increased resistance to a cancer
cell or tumor to treatment with a compound of General Formula I or
a pharmaceutically acceptable salt or solvate thereof that was
previously administered to the subject); or (c) selecting
additional doses of the compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof previously
administered to the subject if the subject has a cancer cell that
does not have a RET inhibitor resistance mutation (that confers
increased resistance to a cancer cell or tumor to treatment with a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof that was previously administered to the
subject). In some embodiments, where additional doses of a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof of step (a) are selected for the subject, the
method can also include further selecting another anticancer agent
(e.g., another RET inhibitor, e.g., a RET inhibitor that is not a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, or a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof that is
different from the compound of step (a)).
[0596] Also provided are methods of determining a subject's risk
for developing a cancer that has some resistance to a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof that include: determining whether a cell in a sample
obtained from the subject has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof); and
identifying the subject if the subject has a cell that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof), as having an increased likelihood of developing a
cancer that has some resistance to a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof. Also
provided are methods of determining a subject's risk for developing
a cancer that has some resistance to a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof that
include: identifying a subject having a cell that has one or more
RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof), as having an increased likelihood of developing a
cancer that has some resistance to a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof. Also
provided are methods of determining the presence of a cancer that
has some resistance to a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof that includes:
determining whether a cancer cell in a sample obtained from the
subject has one or more RET inhibitor resistance mutations (that
confer increased resistance to a cancer cell or tumor to treatment
with a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof); and determining that a subject
having a cancer cell that has one or more RET inhibitor resistance
mutations (that confer increased resistance to a cancer cell or
tumor to treatment with a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof), has a cancer
that has some resistance to a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof. Also provided
are methods of determining the presence of a cancer that has some
resistance to a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof in a subject that include:
determining that a subject having a cancer cell that has one or
more RET inhibitor resistance mutations (that confer increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof), has a cancer that has some resistance to a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof.
[0597] In some embodiments of any of the methods described herein,
a RET inhibitor resistance mutation that confers increased
resistance to a cancer cell or tumor to treatment with a compound
of General Formula I or a pharmaceutically acceptable salt or
solvate thereof, can be any of the RET inhibitor resistance
mutations listed in Table 3 or 4.
[0598] Methods of determining the level of resistance of a cancer
cell or a tumor to a RET inhibitor (e.g., any of the RET inhibitors
described herein or known in the art) can be determined using
methods known in the art. For example, the level of resistance of a
cancer cell to a RET inhibitor can be assessed by determining the
IC.sub.50 of a RET inhibitor (e.g., any of the RET inhibitors
described herein or known in the art) on the viability of a cancer
cell. In other examples, the level of resistance of a cancer cell
to a RET inhibitor can be assessed by determining the growth rate
of the cancer cell in the presence of a RET inhibitor (e.g., any of
the RET inhibitors described herein). In other examples, the level
of resistance of a tumor to a RET inhibitor can be assessed by
determining the mass or size of one or more tumors in a subject
over time during treatment with a RET inhibitor (e.g., any of the
RET inhibitors described herein). In other examples, the level of
resistance of a cancer cell or a tumor to a RET inhibitor can be
indirectly assessed by determining the activity of a RET kinase
including one or more of the RET inhibitor resistance mutations
(i.e., the same RET kinase expressed in a cancer cell or a tumor in
a subject). The level of resistance of a cancer cell or tumor
having one or more RET inhibitor resistance mutations to a RET
inhibitor is relative to the level of resistance in a cancer cell
or tumor that does not have a RET inhibitor resistance mutation
(e.g., a cancer cell or tumor that does not have the same RET
inhibitor resistance mutations, a cancer cell or a tumor that does
not have any RET inhibitor resistance mutations, or a cancer cell
or a tumor that expresses a wildtype RET protein). For example, the
deetermined level of resistance of a cancer cell or a tumor having
one or more RET inhibitor resistance mutations can be greater than
about 1%, greater than about 2%, greater than about 3%, greater
than about 4%, greater than about 5%, greater than about 6%,
greater than about 7%, greater than about 8%, greater than about
9%, greater than about 10%, greater than about 11%, greater than
about 12%, greater than about 13%, greater than about 14%, greater
than about 15%, greater than about 20%, greater than about 25%,
greater than about 30%, greater than about 35%, greater than about
40%, greater than about 45%, greater than about 50%, greater than
about 60%, greater than about 70%, greater than about 80%, greater
than about 90%, greater than about 100%, greater than about 110%,
greater than about 120%, greater than about 130%, greater than
about 140%, greater than about 150%, greater than about 160%,
greater than about 170%, greater than about 180%, greater than
about 190%, greater than about 200%, greater than about 210%,
greater than about 220%, greater than about 230%, greater than
about 240%, greater than about 250%, greater than about 260%,
greater than about 270%, greater than about 280%, greater than
about 290%, or greater than about 300% of the level of resistance
in a cancer cell or tumor that does not have a RET inhibitor
resistance mutation (e.g., a cancer cell or tumor that does not
have the same RET inhibitor resistance mutations, a cancer cell or
a tumor that does not have any RET inhibitor resistance mutations,
or a cancer cell or a tumor that expresses a wildtype RET
protein).
[0599] RET is thought to play an important role in the development
and survival of afferent nociceptors in the skin and gut. RET
kinase knock-out mice lack enteric neurons and have other nervous
system anomalies suggesting that a functional RET kinase protein
product is necessary during development (Taraviras, S. et al.,
Development, 1999, 126:2785-2797). Moreover population studies of
patients with Hirschsprung's disease characterized by colonic
obstruction due to lack of normal colonic enervation have a higher
proportion of both familial and sporadic loss of function RET
mutations (Butler Tjaden N., et al., Transl. Res., 2013, 162:
1-15). Irritable bowel syndrome (IBS) is a common illness affecting
10-20% of individuals in developed countries and is characterized
by abnormal bowel habits, bloating and visceral hypersensitivity
(Camilleri, M., N. Engl. J. Med., 2012, 367: 1626-1635). While the
etiology of IBS is unknown it is thought to result from either a
disorder between the brain and gastrointestinal tract, a
disturbance in the gut microbiome or increased inflammation. The
resulting gastrointestinal changes affect normal bowel transit
resulting in either diarrhea or constipation. Furthermore in many
IBS patients the sensitization of the peripheral nervous system
results in visceral hypersensitivity or allodynia (Keszthelyi, D.,
Eur. J. Pain, 2012, 16: 1444-1454). See, e.g., U.S. Publication No.
2015/0099762.
[0600] Accordingly, provided herein are methods for treating a
patient diagnosed with (or identified as having) an irritable bowel
syndrome (IBS) including diarrhea-predominant,
constipation-predominant or alternating stool pattern, functional
bloating, functional constipation, functional diarrhea, unspecified
functional bowel disorder, functional abdominal pain syndrome,
chronic idiopathic constipation, functional esophageal disorders,
functional gastroduodenal disorders, functional anorectal pain, and
inflammatory bowel disease that include administering to the
patient a therapeutically effective amount of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate
thereof.
[0601] Also provided herein are methods for treating a patient
identified or diagnosed as having a RET-associated irritable bowel
syndrome (IBS) (e.g., a patient that has been identified or
diagnosed as having a RET-associated irritable bowel syndrome (IBS)
through the use of a regulatory agency-approved, e.g.,
FDA-approved, kit for identifying dysregulation of a RET gene, a
RET kinase, or expression or activity or level of any of the same,
in a patient or a biopsy sample from the patient) that include
administering to the patient a therapeutically effective amount of
a compound of General Formula I or a pharmaceutically acceptable
salt or solvate thereof.
[0602] Also provided herein are methods for treating pain
associated with IBS that include administering to the patient a
therapeutically effective amount of a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof. In some
embodiments, a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof is administered in combination
with another therapeutic agent useful for treating one or more
symptoms of IBS.
[0603] Also provided are methods for treating an irritable bowel
syndrome (IBS) in a patient in need thereof, the method comprising:
(a) determining if the irritable bowel syndrome (IBS) in the
patient is a RET-associated IBS (e.g., using a regulatory-agency
approved, e.g., FDA-approved, kit for identifying dysregulation of
a RET gene, a RET kinase, or expression or activity or level of any
of the same, in a patient or a biopsy sample from the patient, or
by performing any of the non-limiting examples of assays described
herein); and (b) if the IBS is determined to be a RET-associated
IBS, administering to the patient a therapeutically effective
amount of a compound of General Formula I or a pharmaceutically
acceptable salt or solvate thereof.
[0604] In some embodiments, the compounds of the present invention
are useful for treating irritable bowel syndrome (IBS) in
combination with one or more additional therapeutic agents or
therapies effective in treating the irritable bowel syndrome that
work by the same or a different mechanism of action. The at least
one additional therapeutic agent may be administered with a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof as part of the same or separate dosage forms,
via the same or different routes of administration, and on the same
or different administration schedules according to standard
pharmaceutical practice known to one skilled in the art.
[0605] Non-limiting examples of additional therapeutics for the
treatment of irritable bowel syndrome (IBS) include probiotics,
fiber supplements (e.g., psyllium, methylcellulose), anti-diarrheal
medications (e.g., loperamide), bile acid binders (e.g.,
cholestyramine, colestipol, colesevelam), anticholinergic and
antispasmodic medications (e.g., hyoscyamine, dicyclomine),
antidepressant medications (e.g., tricyclic antidepressant such as
imipramine or notriptyline or a selective serotonin reuptake
inhibitor (SSRI) such as fluoxetine or paroxetine), antibiotics
(e.g., rifaximin), alosetron, and lubiprostone.
[0606] Accordingly, also provided herein are methods of treating
irritable bowel syndrome (IBS), comprising administering to a
patient in need thereof a pharmaceutical combination for treating
IBS which comprises (a) a compound of General Formula I or
pharmaceutically acceptable salt or solvate thereof, (b) an
additional therapeutic agent, and (c) optionally at least one
pharmaceutically acceptable carrier for simultaneous, separate or
sequential use for the treatment of IBS, wherein the amounts of the
compound of General Formula I or pharmaceutically acceptable salt
or solvate thereof and the additional therapeutic agent are
together effective in treating the IBS. In one embodiment, the
compound of General Formula I or pharmaceutically acceptable salt
or solvate thereof, and the additional therapeutic agent are
administered simultaneously as separate dosages. In one embodiment,
the compound of General Formula I or pharmaceutically acceptable
salt or solvate thereof, and the additional therapeutic agent are
administered as separate dosages sequentially in any order, in
jointly therapeutically effective amounts, e.g. in daily or
intermittently dosages. In one embodiment, compound of General
Formula I or pharmaceutically acceptable salt or solvate thereof,
and the additional therapeutic agent are administered
simultaneously as a combined dosage.
[0607] Also provided herein is (i) a pharmaceutical combination for
treating irritable bowel syndrome in a patient in need thereof,
which comprises (a) a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, (b) at least
one additional therapeutic agent (e.g., any of the exemplary
additional therapeutic agents described herein for treating
irritable bowel syndrome or known in the art), and (c) optionally
at least one pharmaceutically acceptable carrier for simultaneous,
separate or sequential use for the treatment of irritable bowel
syndrome, wherein the amounts of the compound of General Formula I
or pharmaceutically acceptable salt or solvate thereof and of the
additional therapeutic agent are together effective in treating the
irritable bowel syndrome; (ii) a pharmaceutical composition
comprising such a combination; (iii) the use of such a combination
for the preparation of a medicament for the treatment of irritable
bowel syndrome; and (iv) a commercial package or product comprising
such a combination as a combined preparation for simultaneous,
separate or sequential use; and to a method of treatment of
irritable bowel syndrome in a patient in need thereof. In one
embodiment the patient is a human.
[0608] The term "pharmaceutical combination", as used herein,
refers to a pharmaceutical therapy resulting from the mixing or
combining of more than one active ingredient and includes both
fixed and non-fixed combinations of the active ingredients. The
term "fixed combination" means that a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof and at
least one additional therapeutic agent (e.g., an agent effective in
treating irritable bowel syndrome), are both administered to a
patient simultaneously in the form of a single composition or
dosage. The term "non-fixed combination" means that a compound of
General Formula I or a pharmaceutically acceptable salt or solvate
thereof and at least one additional therapeutic agent (e.g., an
agent effective in treating irritable bowel syndrome) are
formulated as separate compositions or dosages, such that they may
be administered to a patient in need thereof simultaneously,
concurrently or sequentially with variable intervening time limits,
wherein such administration provides effective levels of the two or
more compounds in the body of the patient. In one embodiment, the
compound of Formula I and the additional therapeutic agent are
formulated as separate unit dosage forms, wherein the separate
dosages forms are suitable for either sequential or simultaneous
administration. These also apply to cocktail therapies, e.g. the
administration of three or more active ingredients.
[0609] In some embodiments, a compound provided herein can be used
as an agent for supportive care for a patient undergoing cancer
treatment. For example, a compound of General Formula I or a
pharmaceutically acceptable salt or solvate thereof, can be useful
to reduce one or more symptoms associated with treatment with one
or more cancer therapies such as diarrheal or constipations
complications and/or abdominal pain. See, for example, U.S.
Publication No. 2015/0099762 and Hoffman, J. M. et al.
Gastroenterology (2012) 142:844-854. Accordingly, a compound, or a
pharmaceutically acceptable salt thereof, or composition provided
herein can be administered to a patient to address one or more
complications associated with cancer treatment (e.g.,
gastrointestinal complications such as diarrhea, constipation, or
abdominal pain).
[0610] In some embodiments, a therapeutically effective amount of a
compound of General Formula I or a pharmaceutically acceptable salt
or solvate thereof, can be administered to a patient undergoing
cancer treatment (e.g., a patient experiencing an adverse event
associated with cancer treatment such as an immune-related adverse
event or a gastrointestinal complication including diarrhea,
constipation, and abdominal pain). For example, a compound provided
herein, or a pharmaceutically acceptable salt thereof, can be used
in the treatment of colitis or IBS associated with administration
of a checkpoint inhibitor; see, e.g., Postow, M. A. et al. Journal
of Clinical Oncology (2015) 33: 1974-1982. In some such
embodiments, a compound provided herein, or a pharmaceutically
acceptable salt thereof, can be formulated to exhibit low
bioavailability and/or be targeted for delivery in the
gastrointestinal tract. See, for example, U.S. Pat. No.
6,531,152.
[0611] Also provided is a method for inhibiting RET kinase activity
in a cell, comprising contacting the cell with a compound of
General Formula I. In one embodiment, the contacting is in vitro.
In one embodiment, the contacting is in vivo. In one embodiment,
the contacting is in vivo, wherein the method comprises
administering an effective amount of a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof to a
subject having a cell having RET kinase activity. In some
embodiments, the cell is a cancer cell. In one embodiment, the
cancer cell is any cancer as described herein. In some embodiments,
the cancer cell is a RET-associated cancer cell. In some
embodiments, the cell is a gastrointestinal cell.
[0612] Also provided is a method for inhibiting RET kinase activity
in a mammalian cell, comprising contacting the cell with a compound
of General Formula I. In one embodiment, the contacting is in
vitro. In one embodiment, the contacting is in vivo. In one
embodiment, the contacting is in vivo, wherein the method comprises
administering an effective amount of a compound of General Formula
I or a pharmaceutically acceptable salt or solvate thereof to a
mammal having a cell having RET kinase activity. In some
embodiments, the mammalian cell is a mammalian cancer cell. In one
embodiment, the mammalian cancer cell is any cancer as described
herein. In some embodiments, the mammalian cancer cell is a
RET-associated cancer cell. In some embodiments, the mammalian cell
is a gastrointestinal cell.
[0613] As used herein, the term "contacting" refers to the bringing
together of indicated moieties in an in vitro system or an in vivo
system. For example, "contacting" a RET kinase with a compound
provided herein includes the administration of a compound provided
herein to an individual or patient, such as a human, having a RET
kinase, as well as, for example, introducing a compound provided
herein into a sample containing a cellular or purified preparation
containing the RET kinase.
[0614] Also provided herein is a method of inhibiting cell
proliferation, in vitro or in vivo, the method comprising
contacting a cell with an effective amount of a compound of General
Formula I or a pharmaceutically acceptable salt or solvate thereof,
or a pharmaceutical composition thereof as defined herein
[0615] The phrase "effective amount" means an amount of compound
that, when administered to a patient in need of such treatment, is
sufficient to (i) treat a RET kinase-associated disease or
disorder, (ii) attenuate, ameliorate, or eliminate one or more
symptoms of the particular disease, condition, or disorder, or
(iii) delay the onset of one or more symptoms of the particular
disease, condition, or disorder described herein. The amount of a
compound of General Formula I that will correspond to such an
amount will vary depending upon factors such as the particular
compound, disease condition and its severity, the identity (e.g.,
weight) of the patient in need of treatment, but can nevertheless
be routinely determined by one skilled in the art.
[0616] When employed as pharmaceuticals, the compounds of General
Formula I can be administered in the form of pharmaceutical
compositions. These compositions can be prepared in a manner well
known in the pharmaceutical art, and can be administered by a
variety of routes, depending upon whether local or systemic
treatment is desired and upon the area to be treated.
Administration may be topical (including transdermal, epidermal,
ophthalmic and to mucous membranes including intranasal, vaginal
and rectal delivery), pulmonary (e.g., by inhalation or
insufflation of powders or aerosols, including by nebulizer;
intratracheal or intranasal), oral or parenteral. Oral
administration can include a dosage form formulated for once-daily
or twice-daily (BID) administration. Parenteral administration
includes intravenous, intraarterial, subcutaneous, intraperitoneal
intramuscular or injection or infusion; or intracranial, e.g.,
intrathecal or intraventricular, administration. Parenteral
administration can be in the form of a single bolus dose, or may
be, for example, by a continuous perfusion pump. Pharmaceutical
compositions and formulations for topical administration may
include transdermal patches, ointments, lotions, creams, gels,
drops, suppositories, sprays, liquids and powders. Conventional
pharmaceutical carriers, aqueous, powder or oily bases, thickeners
and the like may be necessary or desirable
[0617] Also provided herein are pharmaceutical compositions which
contain, as the active ingredient, a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof, in
combination with one or more pharmaceutically acceptable carriers
(excipients). In some embodiments, the composition is suitable for
topical administration. In making the compositions provided herein,
the active ingredient is typically mixed with an excipient, diluted
by an excipient or enclosed within such a carrier in the form of,
for example, a capsule, sachet, paper, or other container. When the
excipient serves as a diluent, it can be a solid, semi-solid, or
liquid material, which acts as a vehicle, carrier or medium for the
active ingredient. Thus, the compositions can be in the form of
tablets, pills, powders, lozenges, sachets, cachets, elixirs,
suspensions, emulsions, solutions, syrups, aerosols (as a solid or
in a liquid medium), ointments containing, for example, up to 10%
by weight of the active compound, soft and hard gelatin capsules,
suppositories, sterile injectable solutions, and sterile packaged
powders. In one embodiment, the composition is formulated for oral
administration. In one embodiment, the composition is formulated as
a tablet or capsule.
[0618] The compositions comprising a compound of General Formula I
or a pharmaceutically acceptable salt or solvate thereof can be
formulated in a unit dosage form, each dosage containing from about
5 to about 1,000 mg (1 g), more usually about 100 mg to about 500
mg, of the active ingredient. The term "unit dosage form" refers to
physically discrete units suitable as unitary dosages for human
subjects and other patients, each unit containing a predetermined
quantity of active material (i.e., a compound for General Formula I
as provided herein) calculated to produce the desired therapeutic
effect, in association with a suitable pharmaceutical
excipient.
[0619] In some embodiments, the compositions provided herein
contain from about 5 mg to about 50 mg of the active ingredient.
One having ordinary skill in the art will appreciate that this
embodies compounds or compositions containing about 5 mg to about
10 mg, about 10 mg to about 15 mg, about 15 mg to about 20 mg,
about 20 mg to about 25 mg, about 25 mg to about 30 mg, about 30 mg
to about 35 mg, about 35 mg to about 40 mg, about 40 mg to about 45
mg, or about 45 mg to about 50 mg of the active ingredient.
[0620] In some embodiments, the compositions provided herein
contain from about 50 mg to about 500 mg of the active ingredient.
One having ordinary skill in the art will appreciate that this
embodies compounds or compositions containing about 50 mg to about
100 mg, about 100 mg to about 150 mg, about 150 mg to about 200 mg,
about 200 mg to about 250 mg, about 250 mg to about 300 mg, about
350 mg to about 400 mg, or about 450 mg to about 500 mg of the
active ingredient.
[0621] In some embodiments, the compositions provided herein
contain from about 500 mg to about 1,000 mg of the active
ingredient. One having ordinary skill in the art will appreciate
that this embodies compounds or compositions containing about 500
mg to about 550 mg, about 550 mg to about 600 mg, about 600 mg to
about 650 mg, about 650 mg to about 700 mg, about 700 mg to about
750 mg, about 750 mg to about 800 mg, about 800 mg to about 850 mg,
about 850 mg to about 900 mg, about 900 mg to about 950 mg, or
about 950 mg to about 1,000 mg of the active ingredient.
[0622] The active compound may be effective over a wide dosage
range and is generally administered in a pharmaceutically effective
amount. It will be understood, however, that the amount of the
compound actually administered will usually be determined by a
physician, according to the relevant circumstances, including the
condition to be treated, the chosen route of administration, the
actual compound administered, the age, weight, and response of the
individual patient, the severity of the patient's symptoms, and the
like.
[0623] Provided herein are pharmaceutical kits useful, for example,
in the treatment of RET-associated diseases or disorders, such as
cancer or irritable bowel syndrome (IBS), which include one or more
containers containing a pharmaceutical composition comprising a
therapeutically effective amount of a compound provided herein.
Such kits can further include, if desired, one or more of various
conventional pharmaceutical kit components, such as, for example,
containers with one or more pharmaceutically acceptable carriers,
additional containers, etc., as will be readily apparent to those
skilled in the art. Instructions, either as inserts or as labels,
indicating quantities of the components to be administered,
guidelines for administration, and/or guidelines for mixing the
components, can also be included in the kit.
[0624] One skilled in the art will recognize that, both in vivo and
in vitro trials using suitable, known and generally accepted cell
and/or animal models are predictive of the ability of a test
compound to treat or prevent a given disorder.
[0625] One skilled in the art will further recognize that human
clinical trials including first-in-human, dose ranging and efficacy
trials, in healthy patients and/or those suffering from a given
disorder, may be completed according to methods well known in the
clinical and medical arts.
EXAMPLES
[0626] The following examples illustrate the invention.
Biological Examples
Example A
RET Enzyme Assay
[0627] Compounds of General Formula I were screened for their
ability to inhibit wild type and V804M mutant RET kinase using
CisBio's HTRF.RTM. KinEASE.TM.-TK assay technology. Briefly,
N-terminal GST tagged recombinant human RET cytoplasmic domain (aa
658-end) from Eurofins (0.25 nM RET; Cat. No. 14-570M) or
N-terminal GST tagged recombinant human V804M mutant RET
cytoplasmic domain (aa 658-end) from Millipore (0.25 nM enzyme;
Cat. No. 14-760) was incubated with 250 nM TK-substrate biotin
(CisBio, part of Cat. No. 62TK0PEC) and 1 mM ATP along with test
compound in a buffer consisting of 25 mM HEPES pH 7.4, 10 mM
MgCl.sub.2, 0.01% Triton X-100, and 2% DMSO in a volume of 8 .mu.L.
Compounds were typically prepared in a threefold serial dilution in
DMSO and added to the assay to give the appropriate final
concentration. After a 30-minute incubation at 22.degree. C., the
reaction was quenched by adding 8 .mu.L of quench solution
containing 31.25 nM Sa-XL665 and 1.times.TK-ab-Cryptate in HTRF
detection buffer (all from CisBio, part of Cat. No. 62TK0PEC).
After a 1 hour incubation at 22.degree. C., the extent of reaction
was determined using a PerkinElmer EnVision multimode plate reader
via HTRF dual wavelength detection, and the percent of control
(POC) was calculated using a ratiometric emission factor. 100 POC
was determined using no test compounds and 0 POC was determined
using pre-quenched control reactions. The POC values were fit to a
4 parameter logistic curve, and the IC.sub.50 is defined as the
concentration of inhibitor at which the POC equals 50 for the
fitted curve. The IC.sub.50 values for the compounds tested in this
assay are provided in Table 5.
Example B
RET Cell Assay
[0628] The cellular potency of a compound inhibiting RET kinase was
determined in HEK-293 cells expressing a Kif5b-RET fusion protein.
Briefly, HEK-293 cells expressing a Kif5b-RET fusion protein were
plated at 50K cells/well in 96 well poly-D-Lysine coated plates the
day prior to the assay. The cells were incubated for 1 hour with
test compound in DMEM (Dulbecco's Modified Eagle Medium) at a final
DMSO concentration of 0.5%. Compounds were typically prepared in a
three fold serial dilution in DMSO and added to the assay to give
the appropriate final concentration. After 1 hour the media was
removed, the cells were fixed with 3.8% formaldehyde for 20 min,
washed with PBS, and permeabilized for 10 min with 100% methanol.
The plates were then washed with PBS-0.05% Tween20, and blocked
with LI-COR Blocking solution (LI-COR catalog #927-40000) for 1
hour. Plates were washed with PBS-0.05% Tween20, then incubated
with anti-phospho-RET(Tyr1062) (Santa Cruz catalog #sc-20252-R)
antibody and anti-GAPDH (Millipore catalog # MAB374) antibody for 2
hours. The plates were washed with PBS-0.05% Tween20, and incubated
with anti-rabbit 680 (Molecular Probes cat# A21109) and anti-mouse
800 (LI-COR catalog #926-32210) secondary antibodies for 1 hour.
All antibodies were diluted in LI-COR Block containing 0.05% Tween.
The plates were washed with PBS-0.05% Tween20, 100 .mu.L PBS was
added to each well, and the plates were read on a LI-COR Aerius
fluorescent plate reader. The phospho-RET signal was normalized to
the GAPDH signal. 100 POC (percent of control) was determined using
no test compounds and 0 POC was determined using 1 .mu.M of a
control inhibitor. The POC values were fit to a 4 parameter
logistic curve. The IC.sub.50 value is the point where the curve
crosses 50 POC. The IC.sub.50 values for the compounds tested in
this assay are provided in Table 5.
Example C
KDR Cell Assay
[0629] The cellular potency of a compound inhibiting KDR kinase was
determined in HEK-293 cells expressing an inducible human KDR
protein. Briefly, HEK-293 cells expressing KDR protein were plated
at 40K cells/well in 96-well collagen (compounds of Example Nos. 2,
88, 290, 291, 295, 297, 298, 299, 332, 333, and 339) or
poly-D-lysine (all other tested compounds) coated plates the day
prior to the assay. Cells were incubated for 4 to 6 hours to allow
them to adhere to the plate and then protein expression is induced
by the addition of 1 .mu.g/mL Doxycycline overnight. The cells were
incubated for 1 hour with test compound in DMEM at a final DMSO
concentration of 0.25%. Compounds were typically prepared in a
three-fold serial dilution in DMSO and added to the assay to give
the appropriate final concentration. After 1 hour, wells were
stimulated with VEGF (75 ng/ml final; compounds of Example Nos. #2,
88, 290, 291, 295, 297, 298, 299, 332, 333, 339) or VEGF (56 ng/ml
final; all other tested compounds) for 5 minutes at 37 C. The media
was aspirated and 35 .mu.L of a 1.times. lysis buffer was added.
Plates were shaken for 1-2 mins to finalize cell lysis. The lysate
was stored at -80 OC until ready for assay. Phospho-KDR was
measured using a phospho-KDR kit (Catalog #K151BOC) purchased from
Meso Scale Diagnostics (Rockville, Md.) according to the
manufacturer's instructions. All values are expressed as percent of
percent of control (POC). The POC values were fitted to a 4
parameter logistic curve fit and the IC.sub.50 value is point where
the curve crosses 50 POC. The IC.sub.50 values for the compounds
tested in this assay are provided in Table 5.
TABLE-US-00005 TABLE 5 IC.sub.50 values of compounds tested in the
assay of Examples A, B and/or C. RET RET KIF5B-RET pKDR Cell Enzyme
FRET_ATP_ pTYR1062 HEK 10% IC.sub.50 V804M Cell FBS Ex# (nM)
IC.sub.50 (nM) IC.sub.50 (nM) IC.sub.50 (nM) 1 35.8 302.2 47.5 N/A
2 19.6 N/A 110.8 1081.9 3 11.9 N/A 119.0 N/A 4 3.1 N/A 15.9 327.6 5
4.6 32.0 4.3 242.9 6 4.9 38.3 4.2 114.9 7 3.9 20.8 2.9 115.1 8 3.6
N/A 4.3 98.9 9 5.3 23.3 4.2 32.7 10 4.5 N/A 2.5 47.4 11 28.9 N/A
123.5 N/A 12 15.4 N/A 47.6 1190.0 13 154.5 N/A 3768.9 N/A 14 4.4
N/A 3.7 1781.0 15 12.5 N/A 21.2 642.9 16 5.7 20.9 2.1 435.0 17 19.9
N/A 29.2 83.4 18 30.6 N/A 19.8 229.4 19 12.6 N/A 54.1 546.5 20 9.8
76.8 36.8 1647.2 21 9.4 N/A 21.3 539.8 22 14.8 162.7 22.5 630.1 23
3.8 26.6 4.8 45.4 24 34.0 N/A 18.9 960.5 25 5.0 14.9 1.6 269.9 26
13.0 N/A 9.6 476.1 27 14.2 N/A 20.0 651.4 28 89.0 N/A 240.8 N/A 29
16.4 N/A 16.4 607.5 30 22.1 N/A 123.8 920.7 31 36.7 N/A 76.1 2550.8
32 23.9 N/A 108.0 749.0 33 42.9 N/A 309.5 N/A 34 34.8 N/A 61.2
3038.9 35 18.9 N/A 54.6 437.1 36 24.0 N/A 25.5 211.8 37 6.8 54.9
6.6 91.2 38 15.5 N/A 16.6 396.2 39 6.3 N/A 2.7 83.9 40 13.7 N/A
11.2 221.5 41 22.9 N/A 29.3 871.0 42 15.8 N/A 23.4 502.2 43 22.4
N/A 31.6 653.1 44 18.3 N/A 378.9 N/A 45 27.0 N/A 603.9 N/A 46 9.8
N/A 2244.2 N/A 47 12.6 N/A 2076.0 N/A 48 9.7 76.2 21.9 611.9 49 7.0
N/A 5.8 236.7 50 7.9 47.1 22.1 1192.6 51 4.1 N/A 3.5 267.2 52 17.7
N/A 340.4 N/A 53 4.4 74.6 9.9 305.2 54 12.4 N/A 66.6 1484.9 55 10.4
N/A 54.9 922.5 56 16.0 N/A 35.5 895.8 57 12.7 N/A 48.6 1036.2 58
8.3 N/A 16.6 438.9 59 16.3 N/A 26.6 554.3 60 14.8 N/A 16.9 376.4 61
5.5 N/A 5.5 148.5 62 17.3 N/A 27.7 1298.8 63 11.5 N/A 8.2 527.2 64
31.9 N/A 138.9 N/A 65 8.2 N/A 39.3 901.7 66 14.1 N/A 25.4 911.1 67
19.4 N/A 60.7 521.5 68 10.2 N/A 32.2 788.5 69 4.4 N/A 2.7 117.4 70
8.4 N/A 18.5 510.1 71 6.4 N/A 19.6 503.3 72 6.1 57.2 12.5 99.9 73
9.8 N/A 32.7 296.5 74 28.8 N/A 45.9 1346.1 75 6.3 40.1 7.0 392.1 76
8.0 N/A 13.3 1009.9 77 8.0 N/A 19.2 605.2 78 4.4 N/A 5.3 80.6 79
14.5 N/A 31.3 1263.1 80 33.6 N/A 542.2 N/A 81 12.6 N/A 66.1 761.9
82 4.8 13.2 3.1 91.2 83 7.6 20.5 3.7 135.2 84 13.0 75.0 8.3 1264.1
85 7.6 52.6 6.5 770.7 86 10.6 N/A 5.6 427.8 87 5.3 N/A 3.5 5.8 88
9.8 N/A 43.3 194.8 89 10.6 59.7 6.4 189.1 90 5.2 39.9 4.3 24.1 91
5.6 N/A 7.5 60.1 92 41.2 N/A 535.8 N/A 93 10.1 N/A 11.2 1699.2 94
8.5 N/A 8.5 1703.6 95 15.4 N/A 26.2 1307.1 96 6.3 N/A 51.9 1555.3
97 12.1 78.8 12.5 751.5 98 3.6 N/A 13.0 1596.5 99 13.9 N/A 406.3
N/A 100 15.3 N/A 455.5 N/A 101 11.7 N/A 13.6 868.4 102 11.7 N/A 8.3
551.3 103 23.5 N/A 23.5 847.6 104 23.1 N/A 33.2 637.4 105 13.9 N/A
63.0 1142.5 106 12.0 N/A 63.4 1370.3 107 22.9 N/A 42.8 893.0 108
11.1 N/A 15.6 531.0 109 8.8 36.3 2.1 359.6 110 12.0 100.5 11.7
1310.3 111 33.1 N/A 58.1 1957.3 112 10.3 N/A 22.7 868.9 113 11.5
105.6 11.4 653.8 114 25.9 N/A 36.0 2245.3 115 32.1 N/A 59.3 3180.2
116 11.7 N/A 12.7 2274.6 117 6.5 N/A 10.9 353.9 118 8.0 N/A 10.7
606.0 119 29.1 N/A 74.7 2268.8 120 17.9 N/A 54.8 2242.9 121 12.6
N/A 56.6 1340.9 122 11.3 N/A 266.7 N/A 123 19.1 N/A 67.9 1610.8 124
18.9 N/A 36.5 1859.6 125 5.6 60.5 6.1 615.8 126 11.7 N/A 10.8 347.2
127 2.7 13.4 2.7 13.5 128 11.6 127.7 11.1 554.5 129 2.9 17.3 5.0
93.5 130 20.8 152.6 33.0 2254.3 131 8.1 N/A 24.7 447.0 132 11.2
65.6 16.1 1151.0 133 4.3 10.9 1.7 147.1 134 5.5 34.2 11.5 319.9 135
12.8 93.6 35.4 1033.2 136 9.1 50.2 11.9 1580.0 137 8.3 32.1 5.2
71.3 138 5.4 N/A 5.2 16.1 139 4.5 11.3 5.4 288.9 140 25.5 N/A 59.1
711.9 141 7.4 N/A 13.2 203.1 142 50.2 N/A 332.7 N/A 143 34.1 361.4
69.8 1795.5 144 25.2 N/A 58.9 1683.1 145 13.8 N/A 29.6 682.0 146
12.3 N/A 29.0 736.5 147 19.2 N/A 25.7 1288.2 148 19.8 N/A 46.7
1062.5 149 16.5 N/A 21.9 563.5 150 28.3 N/A 49.3 728.4 151 44.0 N/A
70.4 1432.3 152 13.6 N/A 18.5 207.3 153 9.9 N/A 12.2 164.1 154 10.1
N/A 8.7 155.5 155 19.9 N/A 23.7 979.0 156 37.4 N/A 74.5 1757.6 157
29.3 N/A 56.6 893.7 158 18.0 N/A 30.2 1366.2 159 23.9 N/A 89.0
1301.4 160 13.6 N/A 11.0 191.5 161 6.6 N/A 3.7 48.5 162 6.1 35.7
5.4 42.0 163 23.1 N/A 42.8 991.4 164 6.9 N/A 8.8 73.6 165 24.8 N/A
28.9 2019.4 166 42.8 N/A 43.1 1988.9 167 34.2 N/A 48.5 779.5 168
12.1 N/A 43.3 1091.5 169 10.8 N/A 31.1 1437.8 170 54.0 N/A 200.9
N/A 171 52.6 N/A 734.6 N/A 172 68.2 N/A 264.7 N/A 173 17.2 N/A 32.8
1265.6 174 14.9 N/A 70.9 1218.5 175 21.6 N/A 221.6 N/A 176 7.6 N/A
15.3 928.4 177 47.0 N/A 69.9 1181.4 178 9.0 N/A 10.8 426.2 179 18.0
N/A 30.8 546.6 180 13.6 N/A 135.2 N/A 181 10.5 N/A 108.7 1195.3 182
11.6 N/A 27.0 563.5 183 11.9 N/A 15.8 443.7 184 4.0 N/A 2.8 75.2
185 11.5 77.8 14.3 627.7 186 14.3 N/A 22.5 451.2 187 15.9 N/A 20.4
871.4 188 16.8 N/A 9.7 613.7 189 7.7 N/A 9.5 254.6 190 14.0 N/A
20.4 277.3 191 8.3 N/A 6.3 21.8 192 12.2 N/A 30.1 932.1 193 10.1
N/A 198.7 N/A 194 6.7 N/A 11.0 242.0 195 9.4 N/A 28.1 246.5 196
10.9 102.7 45.5 629.7 197 14.0 N/A 39.6 1295.9 198 14.3 N/A 25.3
659.1 199 5.1 34.8 21.7 565.4 200 8.5 50.7 9.2 463.2 201 10.7 N/A
7.1 1152.3 202 41.7 N/A 110.4 992.3 203 5.8 16.7 5.2 559.7 204 27.3
N/A 12.2 429.4 205 14.4 N/A 309.2 N/A 206 14.1 N/A 23.3 1195.0 207
16.2 N/A 39.1 1958.3 208 98.2 N/A 221.6 4675.2 209 5.8 N/A 164.9
N/A 210 116.1 N/A 274.8 N/A 211 107.9 N/A 322.7 N/A 212 90.3 N/A
300.6 N/A 213 72.9 N/A 185.3 N/A 214 14.9 36.3 4.6 597.2 215 13.7
229.9 112.7 N/A 216 12.2 N/A 20.4 573.7 217 6.4 N/A 7.4 1672.4 218
7.2 N/A 10.7 4793.0 219 7.8 N/A 9.0 N/A 220 9.4 N/A 10.9 616.8 221
22.1 N/A 42.8 1659.8 222 6.2 N/A 1.5 257.4 223 8.7 24.2 5.8 1552.5
224 13.5 N/A 34.2 555.2 225 103.6 N/A 461.7 N/A 226 31.8 N/A 57.1
1174.2 227 201.9 N/A 277.5 N/A 228 54.4 N/A 80.7 4528.8 229 333.6
N/A N/A N/A 230 242.0 N/A N/A N/A 231 6.9 N/A 5.6 279.4 232 12.1
N/A 24.4 812.0 233 13.6 N/A 27.3 510.5 234 25.6 N/A 31.9 1209.8 235
7.4 N/A 5.1 1510.6 236 4.0 N/A 3.2 476.6 237 6.1 43.9 15.8 840.2
238 5.8 N/A 5.5 420.2 239 8.7 N/A 5.8 916.4 240 15.0 N/A 18.6 897.3
241 11.6 N/A 14.7 1835.1
242 4.5 N/A 6.3 223.2 243 5.6 N/A 5.4 103.2 244 20.9 N/A 69.2 659.7
245 30.2 N/A 190.7 N/A 246 12.0 115.0 13.6 949.5 247 48.1 N/A 167.5
N/A 248 33.2 N/A 75.3 1236.9 249 26.6 N/A 33.5 997.5 250 7.0 N/A
6.1 467.7 251 7.8 29.2 5.6 495.3 252 11.6 N/A 4.8 655.8 253 16.1
N/A 8.4 596.3 254 9.2 N/A 12.3 446.0 255 9.1 N/A 7.3 1086.2 256
12.9 N/A 4.5 735.4 257 14.9 N/A 9.3 1354.7 258 12.5 N/A 10.0 504.8
259 40.1 N/A 104.2 2770.3 260 83.3 N/A 261.0 5000.0 261 209.2 N/A
499.4 N/A 262 19.2 N/A 41.8 617.1 263 161.9 N/A 536.5 N/A 264 58.4
N/A 134.2 N/A 265 153.4 N/A 288.6 N/A 266 47.7 N/A 161.5 N/A 267
11.0 N/A 13.6 2762.2 268 6.3 30.7 4.1 496.5 269 13.2 N/A 17.6
1703.7 270 68.1 N/A 295.3 N/A 271 62.7 N/A 235.9 N/A 272 7.2 39.0
4.7 574.7 273 20.5 N/A 33.0 2138.7 274 51.2 N/A 65.6 5000.0 275
1504.1 N/A N/A N/A 276 395.1 N/A N/A N/A 277 299.5 N/A N/A N/A 278
14.7 N/A 22.7 137.6 279 317.5 N/A N/A N/A 280 176.5 N/A 376.4 N/A
281 179.9 N/A 193.0 N/A 282 8.2 N/A 8.1 662.3 283 18.1 144.4 21.4
N/A 284 12.5 N/A 5.1 663.1 285 25.8 N/A 23.8 1710.4 286 25.2 N/A
91.7 4833.8 287 137.9 N/A 259.3 N/A 288 6.1 32.2 3.7 1937.1 289
29.4 N/A 38.2 229.0 290 27.7 N/A 105.1 3442.2 291 38.2 N/A 137.7
917.6 292 20.8 N/A 69.4 1081.5 293 23.4 N/A 73.3 531.8 294 10.7 N/A
37.0 2102.4 295 14.1 N/A 56.6 720.2 296 37.4 629.4 90.6 2353.6 297
7.6 N/A 44.8 189.5 298 20.9 N/A 101.5 1831.2 299 9.6 N/A 36.8 150.7
300 235.7 N/A N/A N/A 301 20.5 N/A 129.1 158.0 302 49.6 N/A 168.9
2986.4 303 96.1 N/A 228.3 N/A 304 30.0 N/A 62.1 1614.6 305 24.3 N/A
52.2 1487.5 306 19.6 N/A 18.3 879.9 307 16.7 N/A 14.2 864.3 308
68.0 N/A 194.7 N/A 309 27.6 N/A 100.8 4777.6 310 15.7 N/A 71.0
1756.4 311 3046.3 N/A N/A N/A 312 606.7 N/A N/A N/A 313 39.3 87.4
79.2 5000.0 314 75.9 N/A 231.5 N/A 315 53.5 N/A 154.8 N/A 316 106.9
N/A 169.0 N/A 317 33.0 N/A 98.3 5000.0 318 197.1 N/A 768.2 N/A 319
104.8 N/A 464.5 N/A 320 36.4 N/A 97.9 5000.0 321 46.0 N/A 123.5 N/A
322 41.4 57.7 80.8 4860.5 323 76.4 N/A 314.3 N/A 324 144.2 N/A
673.2 N/A 325 371.8 N/A 742.0 N/A 326 75.0 N/A 70.4 579.0 327 7.4
28.0 7.1 605.7 328 62.1 239.4 60.4 1366.5 329 23.2 N/A 45.6 381.3
330 38.3 N/A 84.0 565.9 331 31.1 N/A 147.7 2352.9 332 16.2 N/A 47.0
206.6 333 63.7 251.2 155.8 2394.0 334 184.4 N/A 182.1 N/A 335 30.8
N/A 147.5 N/A 336 26.5 N/A 64.3 613.7 337 445.8 N/A N/A N/A 338
118.4 N/A 403.9 N/A 339 129.2 454.8 470.4 3697.1 340 91.8 N/A 411.6
N/A 341 23.5 66.1 4.1 237.2 342 28.6 337.2 30.8 4752.2 343 67.9
662.9 34.7 1663.9 344 15.1 111.5 10.8 385.4 345 6.1 13.9 4.5 305.1
346 10.1 73.8 15.5 1772.6 347 14.7 88.4 166.0 N/A 348 8.1 102.5
12.2 1407.4 349 10.5 31.4 5.3 403.5 350 15.9 91.1 20.8 1855.4 351
10.9 61.9 6.9 1756.0 352 13.9 184.9 13.7 2203.8 353 15.3 86.1 11.4
1708.0 354 22.1 194.7 16.2 1293.3 355 22.4 171.3 257.1 N/A 356 12.1
40.8 2.5 125.9 357 30.9 1540.1 36.8 2042.9 358 5.1 57.0 3.7 160.8
359 6.7 32.8 3.6 910.2 360 3.9 8.9 1.1 384.8 361 24.6 129.6 54.8
N/A 362 19.9 168.7 20.7 1857.7 363 11.2 48.3 6.7 2640.1 364 21.3
128.8 13.6 4360.4 365 4.0 31.7 9.9 597.3 366 7.8 42.5 9.1 422.4 367
7.7 56.2 4.9 355.4 368 18.8 161.6 11.9 1847.0 369 11.7 77.7 10.7
1268.3 370 2.5 9.4 3.8 29.8 371 61.7 382.9 19.7 1907.8 372 492.7
5686.8 N/A N/A 373 8.9 75.3 18.7 1820.4 374 11.8 93.9 12.6 N/A 375
12.3 56.7 6.9 841.0 376 24.4 150.8 32.1 1826.2 377 48.1 348.1 18.0
2027.1 378 24.8 108.9 32.7 466.8 379 41.8 331.1 126.5 N/A 380 9.8
40.9 7.3 554.6 381 22.1 198.6 21.1 811.3 382 14.4 194.2 17.3 1712.9
383 17.0 220.5 19.7 639.2 384 5.5 25.2 8.9 1042.1 385 27.1 159.0
47.3 1968.9 386 5.6 55.0 9.4 1408.0 387 25.1 171.2 53.2 N/A 388 5.7
24.6 10.0 346.5 389 5.4 29.6 11.4 856.6 390 9.0 32.5 13.0 951.2 391
8.3 49.8 14.7 985.7 392 8.5 31.3 3.6 764.5 393 22.9 151.9 65.0 N/A
394 9.0 64.5 19.7 453.2 395 6.5 20.4 13.5 489.9 396 10.6 75.0 34.7
1464.5 397 10.8 53.6 17.7 1498.9 398 11.1 108.4 18.6 1299.1 399
10.8 34.9 7.7 N/A 400 65.5 430.0 249.9 N/A 401 21.6 138.9 36.1
692.4 402 41.1 314.5 76.4 N/A 403 10.8 25.6 4.6 N/A 404 13.2 66.6
7.0 N/A 405 30.8 114.2 32.5 N/A 406 42.6 223.2 39.9 N/A 407 9.0
39.4 7.7 827.6 408 29.0 184.2 16.9 1298.2 409 49.2 283.7 36.0
1666.7 410 38.4 240.6 103.7 1633.0 411 7.9 54.3 30.1 263.3 412 21.6
146.2 18.2 2133.2 413 15.6 105.9 29.1 549.1 414 41.3 200.3 41.5
2280.9 415 25.2 157.6 25.4 2028.6 416 46.1 344.8 70.8 N/A 417 37.1
283.3 48.5 N/A 418 14.7 105.3 28.1 1510.9 419 29.2 127.9 31.1
1901.3 420 10.9 28.1 5.6 791.7 421 18.0 111.7 11.0 1620.8 422 12.9
79.3 13.1 941.5 423 7.6 29.7 5.5 1368.4 424 6.6 19.1 7.3 629.8 425
25.6 71.4 10.2 916.1 426 14.3 52.8 12.6 1252.0 427 8.2 26.1 5.3
936.7 428 10.5 22.7 7.0 879.9 429 9.1 23.9 4.6 1563.9 430 7.5 31.8
5.4 791.0 431 24.5 145.2 11.6 1498.2 432 6.1 14.2 3.6 263.0 433 9.7
52.2 6.0 1075.2 434 6.5 65.6 10.8 1695.5 435 14.0 109.6 12.7 1327.2
436 14.9 110.2 9.5 536.5 437 15.1 118.8 25.7 1971.4 438 6.1 47.3
4.8 1988.4 439 11.8 46.1 5.0 1239.7 440 13.6 127.4 17.3 1694.5 441
4.7 12.5 4.2 576.5 442 12.0 85.8 24.8 1672.7 443 6.6 23.0 5.3 652.8
444 12.2 76.6 15.0 1286.9 445 12.2 79.0 10.6 1659.3 446 10.4 120.4
20.8 1473.3 447 9.0 43.7 3.6 667.6 448 24.2 157.4 37.4 1721.4 449
12.2 68.1 12.0 1344.7 450 5.5 16.9 1.6 466.8 451 4.9 23.7 4.9 593.4
452 10.0 74.7 12.1 844.4 453 17.3 122.0 17.5 1684.5 454 12.9 34.0
3.3 697.8 455 14.7 48.2 4.2 464.3 456 44.6 357.7 65.4 N/A 457 13.1
105.9 19.5 876.9 458 6.9 17.0 2.4 323.5 459 21.4 179.2 25.0 5000.0
460 21.0 169.4 14.6 1778.9 461 7.5 14.0 1.8 129.1 462 5.7 13.9 9.6
804.1 463 9.7 47.3 17.7 677.8 464 11.6 67.8 8.0 N/A 465 26.7 187.6
87.1 N/A 466 24.8 191.1 43.9 2156.1 467 33.3 157.8 28.1 1543.6 468
11.1 45.9 10.8 N/A 469 19.9 87.2 20.0 N/A 470 99.2 397.0 38.7 N/A
471 11.5 71.2 9.6 1580.2 472 9.4 92.0 17.6 1765.0 473 6.6 28.7 4.6
968.4 474 4.5 18.9 4.0 304.7 475 44.3 356.6 81.8 N/A 476 48.2 396.6
90.7 N/A 477 33.5 197.0 59.9 N/A 478 45.1 292.5 93.1 N/A 479 49.3
373.9 81.9 N/A 480 33.6 154.9 239.3 N/A 481 49.8 248.7 118.6 N/A
482 4.4 9.3 2.4 N/A 483 8.4 50.7 4.1 77.1 484 10.2 18.2 2.0 208.7
485 6.7 41.9 13.3 4796.9 486 N/A N/A N/A N/A 487 N/A N/A N/A N/A
488 N/A N/A N/A N/A 489 4.5 5.7 3.8 19.5 490 13.9 44.7 9.6 619.4
491 31.9 63.4 3.4 119.6 492 9.0 45.9 16.6 563.2
493 6.9 38.3 10.4 927.5 494 28.1 202.0 96.9 1834.3 495 13.6 73.0
17.3 771.3 496 22.8 161.7 69.7 2119.5 497 14.6 46.1 22.5 N/A 498
17.4 70.2 34.1 N/A 499 20.1 35.3 9.0 462.0 500 9.3 29.6 12.4 457.9
501 7.7 29.7 7.2 554.3 502 8.2 35.9 8.3 436.9 503 18.5 203.3 55.5
N/A 504 47.9 409.2 42.4 2068.1 505 26.5 304.6 62.8 1304.3 506 31.3
69.4 6.5 212.5 507 6.2 10.8 1.3 24.9 508 6.6 26.2 2.1 2.9 509 13.8
55.0 2.9 9.2 510 6.7 31.1 9.6 322.9 511 27.3 62.3 11.3 1054.6 512
154.0 1006.9 213.3 N/A 513 17.1 85.7 61.4 2940.0 514 528.8 3433.0
N/A N/A 515 15.3 53.5 10.3 284.0 516 15.3 39.4 4.4 172.6 517 19.1
39.6 23.1 1785.7 518 36.7 154.1 46.4 4630.9 519 13.1 77.6 10.5
1247.6 520 69.5 572.6 164.9 N/A 521 8.8 21.0 5.8 674.6 522 50.4
489.7 103.3 N/A 523 326.5 3336.8 N/A N/A 524 109.5 693.3 230.6 N/A
525 20.4 173.9 59.7 1580.1 526 11.5 21.2 5.6 5000.0 527 14.9 110.5
29.2 917.9 528 20.2 138.9 57.0 1666.7 529 28.5 148.0 79.2 5000.0
530 18.0 109.4 40.0 1535.8 531 17.0 89.8 34.3 689.7 532 148.9
1578.6 811.5 N/A 533 10.9 43.7 22.2 4855.8 534 33.9 173.0 15.8 12.5
535 34.9 125.9 6.2 374.4 536 69.8 91.0 32.8 787.0 536 9.9 86.2 17.7
655.5 538 43.4 438.2 224.3 N/A 539 13.9 177.7 73.1 1638.5 540 5.1
52.3 98.2 1217.5 541 5.2 135.2 95.3 534.4 542 20.7 238.6 34.8 221.7
543 15.2 113.1 101.0 N/A 544 9.9 57.0 4.7 234.0 545 18.9 255.6
302.0 N/A 546 16.6 128.2 35.8 810.8 547 20.4 137.9 213.3 N/A 548
72.1 545.2 99.9 N/A 549 15.6 81.8 89.1 986.4 550 47.2 464.7 348.4
N/A 551 56.6 450.1 107.1 N/A 552 172.0 1242.2 330.4 N/A 553 173.7
1167.2 197.6 N/A 554 267.5 1695.3 N/A N/A 555 19.6 122.8 26.6
1027.6 556 50.4 397.3 38.9 1897.3 557 49.2 430.6 38.3 802.0 558
12.0 122.2 9.1 548.2 559 N/A N/A N/A N/A 560 82.7 504.6 94.6 N/A
561 23.8 144.9 37.5 1725.1 562 56.0 358.8 58.6 N/A 563 4.4 11.7 3.8
195.3 564 6.4 30.3 26.2 740.0 565 6.4 28.7 10.3 540.3 566 9.0 35.9
145.7 N/A 567 3.1 14.4 4.9 198.3 568 6.1 30.4 5000.0 N/A 569 6.2
20.6 2.8 2.2 570 4.2 7.3 2.2 N/A 571 92.0 720.5 5000.0 N/A 572 58.2
779.0 293.2 N/A 573 497.8 3063.1 N/A N/A 574 258.0 2925.4 N/A N/A
575 N/A N/A N/A N/A 576 63.2 477.9 89.6 N/A 577 N/A N/A N/A N/A 578
N/A N/A N/A N/A 579 N/A N/A N/A N/A 580 11.5 61.3 23.5 1243.5 581
13.8 96.5 21.5 670.7 582 11.6 52.5 19.3 561.0 583 865.3 6194.3 N/A
N/A 584 136.5 601.4 N/A N/A 585 13.6 58.4 13.2 N/A 586 5.2 40.0
15.6 5000.0 587 22.2 109.0 28.0 N/A 588 14.4 124.7 144.8 5000.0 589
N/A N/A N/A N/A 590 14.6 146.6 51.5 1486.1 591 5.7 19.5 4.1 1486.1
592 16.1 58.9 17.4 283.3 593 13.3 29.1 12.4 153.7 594 78.9 233.5
9.1 761.8 595 12.7 25.8 5.3 217.4 596 18.5 41.9 8.7 304.9 597 34.0
172.7 39.7 830.2 598 73.6 581.0 137.7 N/A 599 27.6 189.2 16.5
4859.0 600 53.0 526.5 96.3 N/A 601 N/A N/A N/A N/A 602 N/A N/A N/A
N/A 603 N/A N/A N/A N/A 604 N/A N/A N/A N/A 605 N/A N/A N/A N/A 606
N/A N/A N/A N/A 607 N/A N/A N/A N/A 608 N/A N/A N/A N/A 609 16.5
93.8 31.5 1982.5 610 48.1 319.3 109.4 4442.3 611 11.9 26.8 2.5
298.5 612 38.2 91.8 5.2 430.6 613 121.8 642.0 360.9 N/A 614 22.2
121.3 17.0 2303.6 615 60.0 303.3 117.3 N/A 616 60.8 269.4 85.2 N/A
617 N/A N/A N/A N/A 618 N/A N/A N/A N/A 619 62.7 414.9 128.8 5000.0
620 116.4 723.7 N/A N/A 621 883.3 10000.0 N/A N/A 622 83.0 657.6
98.8 N/A 623 63.7 486.5 101.9 N/A 624 397.4 1865.8 N/A N/A 625
304.7 2918.5 N/A N/A 626 35.7 291.9 141.2 N/A 627 66.6 513.3 69.4
N/A 628 11.4 67.5 16.7 5000.0 629 15.3 76.9 34.4 5000.0 630 10.2
26.4 11.7 N/A 631 98.1 412.1 130.2 N/A 632 147.7 417.6 N/A N/A 633
136.6 1154.3 N/A N/A 634 98.9 498.9 140.2 N/A 635 48.8 295.7 90.2
N/A 636 9.4 28.0 4.5 N/A 637 6.2 15.2 3.9 N/A 638 16.9 76.5 15.8
N/A 639 9.2 48.8 24.6 4684.4 640 N/A N/A N/A N/A 641 N/A N/A N/A
N/A 642 20.5 156.5 41.0 N/A 643 377.4 841.2 N/A N/A 644 N/A N/A N/A
N/A 645 26.7 81.9 40.3 1683.7 646 15.6 43.1 45.7 1958.1 647 34.4
101.3 63.0 N/A 648 34.1 98.4 182.9 N/A 649 656.2 1329.7 N/A N/A 650
345.4 1708.5 N/A N/A 651 208.1 382.2 N/A N/A 652 23.1 57.8 17.8
1695.6 653 86.9 169.4 69.4 N/A 654 70.6 81.8 163.7 N/A 655 N/A N/A
N/A N/A 656 N/A N/A N/A N/A 657 139.7 174.8 215.5 N/A 658 15.0 32.3
25.1 1844.2 659 74.3 92.0 173.0 N/A 660 83.2 79.7 283.4 N/A 661
112.2 413.9 N/A N/A 662 10.4 58.3 13.9 N/A 663 7.5 51.3 14.7 N/A
664 4.9 11.8 6.6 N/A 665 5.9 20.7 2.2 N/A 666 10.4 19.1 5.9 190.7
667 8.2 32.6 12.4 N/A 668 9.5 31.0 10.8 N/A 669 20.6 67.8 21.1 N/A
670 32.4 183.3 36.4 N/A 671 13.3 44.5 13.3 N/A 672 19.3 156.9 17.3
N/A 673 12.0 30.9 11.4 N/A 674 42.5 178.1 74.7 N/A 675 13.6 59.3
24.1 N/A 676 9.0 41.9 15.6 N/A 677 15.4 72.2 36.0 N/A 678 15.0 81.6
16.3 N/A 679 15.8 38.8 15.2 N/A 680 13.3 52.1 10.8 N/A 681 33.3
281.4 81.0 N/A 682 12.6 53.1 17.5 N/A 683 36.9 147.8 67.2 N/A 684
36.6 307.4 77.3 N/A 685 31.4 125.7 31.4 N/A 686 8.1 26.1 10.1 N/A
687 6.5 13.3 3.7 N/A 688 7.6 15.1 3.7 50.9 689 6.3 11.9 3.8 N/A 690
12.3 25.7 6.0 N/A 691 11.2 51.2 19.7 N/A 692 8.2 10.2 4.7 N/A 693
8.6 15.4 4.4 1015.3 694 13.1 36.7 16.3 N/A 695 14.1 148.5 27.1 N/A
696 9.6 47.3 16.1 N/A 697 28.1 60.0 13.8 N/A 698 6.7 30.3 12.4 N/A
699 19.4 115.6 24.3 N/A 700 16.8 40.1 5.3 346.7 701 16.5 37.0 8.0
N/A 702 15.3 41.0 5.6 N/A 703 16.4 48.1 9.8 N/A 704 30.1 99.3 8.3
N/A 705 16.7 41.3 5.1 N/A 706 18.3 44.9 6.4 N/A 707 20.1 49.0 6.5
N/A 708 19.4 32.0 7.0 N/A 709 26.2 70.5 9.3 N/A 710 20.0 51.6 12.6
N/A 711 15.5 31.7 26.9 N/A 712 136.8 365.1 N/A N/A 713 10.8 20.1
17.0 N/A 714 18.1 29.1 7.8 N/A 715 34.2 68.9 13.5 N/A 716 23.7 36.4
8.0 N/A 717 92.1 1003.8 185.5 N/A 718 45.4 331.9 59.5 N/A 719 87.6
356.8 121.4 N/A 720 38.4 278.6 34.2 N/A 721 36.9 174.2 76.4 N/A 722
89.4 530.4 108.6 N/A 723 17.7 62.6 18.8 N/A 724 11.8 59.7 32.8 N/A
725 116.6 520.3 N/A N/A 726 389.3 3899.9 N/A N/A 727 61.7 450.2
128.2 N/A 728 176.9 1497.8 N/A N/A 729 28.4 185.3 35.1 N/A 730 25.8
113.4 30.5 N/A 731 19.1 98.9 37.4 N/A 732 40.7 235.0 81.5 N/A 733
23.4 181.9 21.6 N/A 734 61.4 430.6 117.0 N/A 735 26.3 152.4 91.2
N/A 736 35.1 189.1 67.4 N/A 737 24.7 203.3 24.4 N/A 738 31.6 109.5
69.3 N/A 739 36.1 245.2 92.5 N/A 740 4.0 38.6 8.7 N/A 741 42.4 77.4
45.5 N/A 742 37.3 90.0 38.5 N/A 743 184.7 282.9 N/A N/A
744 46.2 103.6 66.3 N/A N/A = Not available
SYNTHETIC EXAMPLES
Synthesis of Synthetic Intermediates
Examples P1 and P2
6-bromo-4-methoxypyrazolo[1,5-a]pyridine (P1) and
4-bromo-6-methoxypyrazolo[1,5-a]pyridine (P2)
##STR00152##
[0630] Step 1: Preparation of
1-amino-3-bromo-5-methoxypyridin-1-ium
2,4,6-trimethylbenzenesulfonate
[0631] To a solution of O-(mesitylsulfonyl)hydroxylamine
(Intermediate R1, 26.6 g, 117 mmol) in DCM (570 mL) cooled to
0.degree. C. was added 3-bromo-5-methoxypyridine (22.1 g, 117 mmol)
in portions. The reaction mixture was stirred for 1 h at 0.degree.
C. then treated with additional 3-bromo-5-methoxypyridine (250 mg,
1.39 mmol) and stirred for an additional 2 h at 0.degree. C. The
reaction mixture was diluted with Et.sub.2O (600 mL), stirred at
0.degree. C. for 10 min and then vacuum filtered, rinsed with
Et.sub.2O (3.times.250 mL). Upon reduction in volume by about 1/3,
the filtrate yielded additional precipitate which was collected by
filtration. Both filter cakes were dried in vacuo to provide the
title compound (39.3 g, 83% yield). .sup.1H NMR (CDCl.sub.3)
.delta. 9.25 (br s, 1H), 8.99 (m, 1H), 8.74 (m, 1H), 7.46 (m, 1H),
6.83 (s, 2H), 3.92 (s, 3H), 2.65 (s, 6H), 2.22 (s, 3H).
Step 2: Preparation of Ethyl
6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carboxylate and Ethyl
4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carboxylate
[0632] To a magnetically stirred white suspension of
1-amino-3-bromo-5-methoxypyridin-1-ium
2,4,6-trimethylbenzenesulfonate (33.24 g, 82.42 mmol) in DMF (82
mL) at ambient temperature was added TEA (22.98 mL, 164.8 mmol),
followed by drop-wise addition of ethyl propiolate (16.71 mL, 164.8
mmol). After vigorous stirring for 2 d, the reaction was slowly
quenched via portion-wise addition to rapidly stirring ice water
(820 mL). The mixture was stirred at ambient temperature for 10 min
and then vacuum filtered. Solids collected were rinsed with water
and air-dried, yielding the title compounds as an orange solid in
an isomeric ratio of about 4:1 (by .sup.1H NMR) with the 6-Br
isomer as the major isomer (21 g). The wet solid isomeric mixture
(about 75% w/w) was directly used in Step 3 without further
purification. MS (apci) m/z=298.9, 300.9 (M+H). Regioisomeric ratio
was determined by MeO chemical shift in .sup.1H NMR (CDCl.sub.3)
.delta. 3.98 (6-Br isomer) vs. 3.83 (4-Br isomer).
Step 3: Preparation of 6-bromo-4-methoxypyrazolo[1,5-a]pyridine
(P1) and 4-bromo-6-methoxypyrazolo[1,5-a]pyridine (P2)
[0633] The isomeric mixture of ethyl
6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carboxylate and ethyl
4-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carboxylate from Step 2
(15 g, 50.1 mmol) was added to 48% HBr (114 mL) while stirring,
then heated at 80.degree. C. for 90 min followed by stirring at
ambient temperature overnight. The resulting suspension was vacuum
filtered and rinsed with water. The aqueous filtrate and the filter
cake were treated independently. The filter cake was taken up in
MTBE and vacuum filtered to remove insoluble impurities. The MTBE
filtrate was dried over anhydrous Na.sub.2SO.sub.4, filtered and
concentrated in vacuo to yield
6-bromo-4-methoxypyrazolo[1,5-a]pyridine (Intermediate P1) as a
beige solid (about 98:2 6-/4-Br; 5.08 g). MS (apci) m/z=226.9,
228.9 (M+H). .sup.1H NMR (CDCl.sub.3) .delta. 8.26 (m, 1H), 7.82
(d, 1H), 6.61 (m, 1H), 6.43 (m, 1H), 3.94 (s, 3H).
[0634] Independently the original aqueous reaction mixture filtrate
was extracted with EtOAc (2.times.500 mL). The combined organic
extracts were dried (Na.sub.2SO.sub.4), filtered and concentrated
in vacuo. The crude residue was taken up in DCM (50 mL) and then
filtered to remove insoluble solids. Concentration of the DCM
filtrate under vacuum followed by silica chromatography (0 to 50%
EtOAc/hexanes) yielded a second batch of
6-bromo-4-methoxypyrazolo[1,5-a]pyridine (Intermediate P1) as white
solid (upper R.sub.f spot, 2.06 g), as well as the minor isomer
title compound 4-bromo-6-methoxypyrazolo[1,5-a]pyridine
(Intermediate P2) also as white solid (lower R.sup.f spot, 1.32 g).
MS (apci) m/z=226.9, 228.9 (M+H). .sup.1H NMR (CDCl.sub.3) .delta.
8.02 (m, 1H), 7.85 (d, 1H), 7.17 (d, 1H), 6.55 (m, 1H), 3.80 (s,
3H).
Intermediate P3
##STR00153##
[0635] 6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde
[0636] To a 0.degree. C. solution of
6-bromo-4-methoxypyrazolo[1,5-a]pyridine (Intermediate P1, 0.75 g,
3.303 mmol) in DMF (33 mL) was slowly added POCl.sub.3 (0.92 mL,
9.909 mmol). The reaction was warmed to ambient temperature and
stirred for 4 h and then diluted with H.sub.2O (30 mL). The
resulting suspension was basified to pH 9-10 with 1 M
NaOH.sub.(aq), then stirred for 1 h and vacuum filtered, then
rinsed sequentially with H.sub.2O (25 mL) and MTBE (50 mL) to yield
the title compound (0.76 g, 90% yield). MS (apci) m/z=256.9
(M+H).
Intermediate P4
##STR00154##
[0637] 6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of
(E)-6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde
oxime
[0638] To a suspension of
6-Bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde
(Intermediate P3, 0.76 g, 3.0 mmol) and hydroxylamine hydrochloride
(0.31 g, 4.5 mmol) in EtOH (40 mL) was added water (20 mL), and the
reaction was stirred at 50.degree. C. for 4 h. After cooling to
ambient temperature the reaction mixture was concentrated in vacuo.
The residue was suspended in water, then treated with saturated
NaHCO.sub.3(aq) and vacuum filtered. The solids were rinsed
sequentially with H.sub.2O (25 mL) and MTBE (50 mL) to yield the
title compound (0.68 g, 84% yield). MS (apci) m/z=271.9 (M+H).
Step 2: Preparation of
6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
[0639] A solution of
(E)-6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde oxime
(17.15 g, 63.50 mmol) in acetic anhydride (707 mL, 7.49 mol) was
heated at 120.degree. C. overnight. Following subsequent
distillation to remove the acetic anhydride, the remaining residue
was dried in vacuo to yield the title compound (15.92 g, 99.4%
yield). .sup.1H NMR (CDCl.sub.3) .delta. 8.32 (m, 1H), 8.12 (s,
1H), 6.74 (m, 1H), 4.03 (s, 3H).
Intermediate P5
##STR00155##
[0640]
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
Step 1: Preparation of
4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[0641] To a solution of
6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P4, 50 g, 198.4 mmol) and
1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
(49.53 g, 238.0 mmol) in dioxane (660 mL) was added 2 M
Na.sub.2CO.sub.3(aq) (297.5 mL, 595.1 mmol). The reaction mixture
was sparged with nitrogen for 20 min before Pd(PPh.sub.3).sub.4
(4.584 g, 3.967 mmol) was introduced, followed by additional 5 min
of sparging with nitrogen. The reaction was heated at 80.degree. C.
for 18 h, then cooled to ambient temperature and vigorously stirred
for 2 h. The suspension was vacuum filtered, rinsed sequentially
with H.sub.2O (2.times.300 mL) and MTBE (3.times.300 mL), then
dried in vacuo overnight to yield the title compound, which was
used in the next step without further purification (52.62 g). MS
(apci), m/z=254.1 (M+H).
Step 2: Preparation of
4-hydroxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[0642] To a suspension of
4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile (52.62 g, 207.8 mmol) in DCE (2 L) was added AlCl.sub.3 (92.86
g, 696.42 mmol), and the reaction mixture was stirred at 80.degree.
C. for 3 h. Additional AlCl.sub.3 (2.5 g, 18.75 mmol) was
introduced and the reaction was refluxed overnight. After cooling
to ambient temperature the reaction mixture was diluted with DCE (1
L) and then quenched with portions of H.sub.2O (5.times.500 mL).
The mixture was stirred at ambient temperature for 3 h before the
resulting suspension was vacuum filtered and the filter cake dried
in a vacuum oven (40.degree. C.) to afford the title compound,
which was used in the next step without further purification (43.69
g). MS (apci) m/z=239.9 (M+H). .sup.1H NMR (d.sup.6-DMSO) .delta.
11.38 (s, 1H), 8.74 (d, 1H), 8.50 (s, 1H), 8.21 (s, 1H), 7.94 (s,
1H), 6.96 (d, 1H), 3.88 (s, 3H).
Step 3: Preparation of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[0643] To a suspension of
4-hydroxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile (43.69 g, 182.6 mmol) in DMA (365 mL) was added DIEA (63.6 mL,
365.3 mmol) followed by
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(71.77 g, 200.9 mmol). The resulting solution was stirred at
ambient temperature for 2 h and then slowly poured into H.sub.2O (4
L). The resulting suspension was stirred for 2 h then vacuum
filtered. The filter cake was rinsed with H.sub.2O (3.times.500 mL)
and air dried overnight. The filter cake was then dissolved in DCM
(1.6 L) and the resulting biphasic mixture was phase-separated. The
organic layer was dried over anhydrous MgSO.sub.4, filtered through
Celite.RTM. and rinsed with DCM. The combined organic layers were
concentrated to yield the title compound as a 90% pure tan solid
(64.3 g, 95% yield). The purity of the title compound can be
further improved to >95% via silica chromatography (0-90%
acetone/hexanes). .sup.19F NMR (CDCl.sub.3) .delta.-72.0. .sup.1H
NMR (CDCl.sub.3) .delta. 8.66 (d, 1H), 8.29 (s, 1H), 7.77 (d, 1H),
7.70 (s, 1H), 7.55 (d, 1H), 4.01 (s, 3H).
Intermediate P6
##STR00156##
[0644]
4-(6-Fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile
[0645] In a pressure tube a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5, 500 mg, 1.35 mmol) in
dioxane (13 mL) was treated sequentially with
2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
(451 mg, 2.02 mmol), Pd(PPh.sub.3).sub.4 (77.8 mg, 0.0673 mmol),
then 2 M Na.sub.2CO.sub.3(aq) (3367 .mu.L, 6.73 mmol). The
resulting reaction mixture was sparged with nitrogen, sealed, and
heated at 90.degree. C. overnight. After cooling to ambient
temperature the reaction mixture was diluted with water (10 mL) and
vigorously stirred. The suspension was vacuum filtered and the
filter cake was rinsed with water (3.times.5 mL), and subsequently
dried in vacuo overnight to yield the title compound (285 mg, 67%
yield). MS (apci), m/z=319.0 (M+H).
Intermediate P7
##STR00157##
[0646] 6-(1-Methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
Step 1: Preparation of
4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[0647] To a solution of 6-bromo-4-methoxypyrazolo[1,5-a]pyridine
(Intermediate P1; 2.00 g, 227.1 mmol) and
1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
(2.02 g, 208.1 mmol) in dioxane (10 mL) was added 2 M
Na.sub.2CO.sub.3(aq) (8.1 mL, 17.6 mmol) and Pd(PPh.sub.3).sub.4
(4.584 g, 3.967 mmol). The reaction mixture was purged with
nitrogen for 2 min, sealed and heated at 90.degree. C. for 4 h.
After cooling to ambient temperature, the reaction mixture was
diluted with water (50 mL) and stirred for 30 min. The resulting
suspension was vacuum filtered, rinsed sequentially with water
(2.times.20 mL) and Et.sub.2O (2.times.10 mL) to yield the crude
title compound, which was used in the next step without further
purification. MS (apci), m/z=229.1 (M+H).
Step 2: Preparation of
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol
[0648]
4-Methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine (2.1
g, 9.2 mmol) was suspended in DCE (50 mL) and treated with
AlCl.sub.3 (6.134 g, 46.00 mmol). The resulting reaction mixture
was heated at 90.degree. C. overnight. Upon cooling to ambient
temperature, the reaction mixture was quenched with
Na.sub.2SO.sub.4.10H.sub.2O in THF (50 mL) and stirred for 2 h
before filtering and concentrating in vacuo. The crude residue was
taken up in saturated NH.sub.4Cl.sub.(aq) (50 mL) and extracted
with EtOAc (2.times.100 mL). The combined organic extracts were
filtered through PS paper and concentrated in vacuo to afford the
crude title compound, which was used in the next step without
further purification. MS (apci) m/z=215.1 (M+H).
Step 3: Preparation of
6-(1-Methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[0649] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol (1.0 g,
4.67 mmol), DIEA (4.1 mL, 23.3 mmol) and
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(2.2 g, 6.07 mmol) in THF (20 mL) was stirred at ambient
temperature overnight, then concentrated in vacuo and purified by
silica chromatography (0-20% MeOH/EtOAc) to afford the title
compound (757 mg, 47% yield). MS (apci) m/z=346.9 (M+H).
Intermediate P8
##STR00158##
[0650]
3-Chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
Step 1: Preparation of
6-bromo-3-chloro-4-methoxypyrazolo[1,5-a]pyridine
[0651] To a solution of 6-bromo-4-methoxypyrazolo[1,5-a]pyridine
(Intermediate P1 as a partial HBr salt; 1000 mg, 4.40 mmol) in DCM
(16 mL) was added NCS (433.59 mg, 3.247 mmol) at ambient
temperature. After stirring overnight, additional NCS (125 mg,
0.936 mmol) was introduced and the reaction was stirred for another
2 h. The mixture was then diluted with water (25 mL) and extracted
with DCM (2.times.25 mL). The combined organic extracts were washed
with water, dried over anhydrous MgSO.sub.4, filtered and
concentrated to yield an 85:15 mixture of two components (1106 mg),
with the major component being the title compound. .sup.1H NMR
(CDCl.sub.3): Major component .delta. 8.18 (d, 1H), 7.75 (s, 1H),
6.45 (d, 1H), 3.96 (s, 3H). Minor component .delta. 8.22 (d, 1H),
7.78 (s, 1H), 6.48 (d, 1H), 2.78 (s, 3H). Major component: MS
(apci) m/z=260.1, 262.9 (M+H). This crude mixture was used in the
next without further purification.
Step 2: Preparation of
3-chloro-4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[0652] In a pressure tube a suspension of
6-bromo-3-chloro-4-methoxypyrazolo[1,5-a]pyridine (550 mg, 2.10
mmol) in dioxane (7 mL) was treated with
1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
(656 mg, 3.15 mmol), 2 M Na.sub.2CO.sub.3(aq) (3155 .mu.L, 6.31
mmol) and Pd(PPh.sub.3).sub.4 (122 mg, 0.105 mmol). The resulting
mixture was sparged with nitrogen and then heated at 90.degree. C.
overnight. After cooling to ambient temperature the reaction
mixture was diluted with water (50 mL) and extracted with DCM
(2.times.50 mL). The combined organic extracts were dried over
anhydrous MgSO.sub.4 and filtered, and the filtrate was
concentrated. The crude residue was purified by silica
chromatography (25-100% EtOAc/hexanes) to provide the title
compound (393 mg, 71% yield). MS (apci) m/z=263.0 (M+H). .sup.1H
NMR (CDCl.sub.3) .delta. 8.16 (d, 1H), 7.76 (s, 1H), 7.75 (s, 1H),
7.62 (s, 1H), 6.46 (s, 1H), 4.01 (s, 3H), 3.99 (s, 1H).
Step 3: Preparation of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol
[0653] A suspension of
3-chloro-4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
(1.0 g, 3.807 mmol) in 1 M BBr.sub.3 in DCM (19.03 mL, 19.03 mmol)
was stirred overnight at ambient temperature followed by another 22
h at 40.degree. C. Upon cooling to ambient temperature, the
reaction mixture was quenched with water (100 mL) and MeOH (10 mL).
The resulting mixture was extracted with DCM (100 mL) and 10% MeOH
in DCM (2.times.100 mL). The combined organic extracts were
concentrated in vacuo to provide the crude title compound, which
was used directly in the next step without further purification
(1959 mg). MS (apci) m/z=249.0 (M+H).
Step 4: Preparation of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[0654] To a suspension of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol
(0.95 g, 3.82 mmol) in DCM (20 mL) was added DIEA (1.33 mL, 7.64
mmol) followed by
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(1.50 g, 4.20 mmol). The resulting suspension was stirred at
ambient temperature overnight and subsequently diluted with DCM (20
mL) and quenched with water (50 mL). The aqueous phase was
extracted with DCM (3.times.50 mL) and the combined organic
extracts were dried (MgSO.sub.4), filtered, and concentrated. The
crude residue was purified by silica chromatography (25-100%
EtOAc/hexanes) to yield the title compound (860 mg, 59% yield).
.sup.1H NMR (CDCl.sub.3) .delta. 8.49 (d, 1H), 7.92 (s, 1H), 7.73
(s, 1H), 7.63 (s, 1H), 7.23 (d, 1H), 3.99 (s, 3H). .sup.19F NMR
(CDCl.sub.3) .delta.-72.5. .sup.19F NMR (CDCl.sub.3)
.delta.-72.5.
Intermediate P9
##STR00159##
[0655]
3-chloro-4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyraz-
olo[1,5-a]pyridine
[0656] In a pressure tube a solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P8; 150 mg, 0.394 mmol) in
dioxane (3 mL) was treated sequentially with
2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
(132 mg, 0.591 mmol), 2 M Na.sub.2CO.sub.3(aq) (985 .mu.L, 1.97
mmol) and Pd(PPh.sub.3).sub.4 (22.8 mg, 0.0197 mmol). The reaction
mixture was sparged with nitrogen and then heated at 90.degree. C.
overnight. After cooling to ambient temperature the reaction
mixture was diluted with water (10 mL) and vigorously stirred. The
suspension was vacuum filtered and the filter cake was rinsed
sequentially with water (10 mL) and MTBE (3.times.5 mL), and
subsequently dried in vacuo to yield the title compound (79 mg, 61%
yield). MS (apci), m/z=327.9 (M+H).
Intermediate P10
##STR00160##
[0657] 4-Bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde
[0658] A solution of 4-bromo-6-methoxypyrazolo[1,5-a]pyridine
(Intermediate P2; 5.0 g, 22 mmol) in DMF (220 mL) was cooled to
0.degree. C. and then slowly treated with POCl.sub.3 (6.2 mL, 66
mmol). The reaction was warmed to ambient temperature and stirred
overnight. The reaction mixture was cooled to 0.degree. C.,
quenched with water (220 mL), and basified with 6 M NaOH(aq) to pH
9-10. The reaction mixture was stirred for 1 h and then vacuum
filtered. The solids were rinsed sequentially with water
(3.times.50 mL) and MTBE (3.times.50 mL). The collected solid was
suspended in DCM (500 mL) and stirred in a sonicating bath for 30
min and then vacuum filtered. The filtrate was retained, while the
filter cake was taken up in water (300 mL) and extracted with DCM
(2.times.300 mL). The organic extracts, along with the retained DCM
filtrate, were combined and dried over anhydrous Na.sub.2SO.sub.4,
then filtered and concentrated in vacuo to provide the title
compound (4.84 g, 86% yield). MS (apci), m/z=256.9 (M+H).
Intermediate P11
##STR00161##
[0659] 4-Bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of
4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde oxime
[0660] To a suspension of
4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde
(Intermediate P10; 4.84 g, 19.0 mmol) in EtOH (253 mL) at ambient
temperature was added water (127 mL) and hydroxylamine
hydrochloride (1.98 g, 28.5 mmol). After stirring at 50.degree. C.
overnight, the reaction mixture was cooled to ambient temperature
and concentrated in vacuo. The residue was suspended in water (150
mL) and then quenched slowly with saturated NaHCO.sub.3(aq) (30
mL). After stirring for 1 hour at ambient temperature the
suspension was vacuum filtered and the filter cake rinsed
sequentially with H.sub.2O (500 mL) and MTBE (100 mL) to yield the
title compound as a 2:1 E/Z mixture (5.13 g, quantitative yield),
which was used in the next step without further purification. MS
(apci) m/z=271.9 (M+H).
Step 2: Preparation of
4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
[0661] The E/Z mixture from Step 1 (4.95 g, 18.33 mmol) in acetic
anhydride (172.9 mL, 1833 mmol) was stirred at 140.degree. C. for
25 h, then cooled to ambient temperature. The resulting suspension
was further cooled in an ice bath for 15 min and then vacuum
filtered and rinsed sequentially with water (200 mL) and MTBE (300
mL) to provide the title compound (3.74 g, 81% yield). .sup.1H NMR
(d.sup.6-DMSO) .delta. 8.70 (s, 1H), 8.60 (s, 1H), 7.78 (s, 1H),
3.83 (s, 3H).
Intermediate P12
##STR00162##
[0662] 4-bromo-6-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
[0663] To a suspension of
4-Bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P11; 1500 mg, 5.951 mmol) in DCE (10 mL) was added
AlCl.sub.3 (2380 mg, 17.85 mmol), and the reaction mixture was
stirred at 80.degree. C. for 4 h. Upon cooling to ambient
temperature, the reaction mixture was quenched with
Na.sub.2SO.sub.4.10H.sub.2O in THF (100 mL), then stirred overnight
and then filtered and concentrated in vacuo to afford the title
compound (963 mg, 68% yield). MS (apci) m/z=238.0 (M-H).
Intermediate P13
##STR00163##
[0664] tert-butyl
4-(5-(3-cyano-6-hydroxypyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-
e-1-carboxylate
[0665] In a pressure tube a solution of
4-bromo-6-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P12; 419 mg, 1.76 mmol) in dioxane (30 mL) was
treated with tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine-
-1-carboxylate (824 mg, 2.12 mmol), 2 M Na.sub.2CO.sub.3(aq) (1764
.mu.L, 3.53 mmol) and Pd(PPh.sub.3).sub.4 (20.4 mg, 0.0176 mmol).
The resulting reaction mixture was sparged with nitrogen for 5 min
and then stirred at 100.degree. C. for 4 h. After cooling to
ambient temperature, the reaction mixture was diluted with
saturated NH.sub.4Cl(aq) (20 mL) and brine (2 mL), and then
extracted with EtOAc (3.times.50 mL). The combined organic extracts
were filtered through PS paper and then concentrated in vacuo to
afford the crude title compound, which was used without further
purification. MS (apci) m/z=421.1 (M+H).
Intermediate P14
##STR00164##
[0666] tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate
[0667] Tert-butyl
4-(5-(3-cyano-6-hydroxypyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-
e-1-carboxylate (Intermediate P13; 750 mg, 1.78 mmol), DIEA (1553
.mu.L, 8.92 mmol) and
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(828 mg, 2.32 mmol) were combined in THF (20 mL) and stirred at
ambient temperature overnight. The reaction was subsequently
concentrated in vacuo and directly purified by silica
chromatography (20-100% EtOAc/hexanes) to yield the title compound
(723 mg, 73% yield). MS (apci) m/z=553.1 (M+H).
Intermediate P15
##STR00165##
[0668]
4-(4-(4-(3,3-Dimethylbutanoyl)piperazin-1-yl)phenyl)-6-hydroxypyraz-
olo[1,5-a]pyridine-3-carbonitrile
[0669] In a pressure tube a solution of
4-bromo-6-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile,
(Intermediate P12; 500 mg, 2.10 mmol) in dioxane (10 mL) was
treated with
3,3-dimethyl-1-(4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-
piperazin-1-yl)butan-1-one (Intermediate R11; 974 mg, 2.52 mmol), 2
M Na.sub.2CO.sub.3(aq) (2100 .mu.L, 4.20 mmol) and
Pd(PPh.sub.3).sub.4 (24.3 mg, 0.0210 mmol). The resulting reaction
mixture was sparged with nitrogen for 5 min then heated at
100.degree. C. overnight. After cooling to ambient temperature, the
reaction mixture was diluted with water and brine (2 mL each) and
then extracted with EtOAc (2.times.50 mL). The combined organic
extracts were filtered through PS paper then concentrated in vacuo
to afford the crude title compound, which was used without further
purifications (510 mg, 58% yield). MS (apci), m/z=419.1 (M+H).
Intermediate P16
##STR00166##
[0670]
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazol-
o[1,5-a]pyridin-6-yl trifluoromethanesulfonate
[0671] To a suspension of
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-hydroxypyrazolo[1,-
5-a]pyridine-3-carbonitrile (Intermediate P15; 510 mg, 1.22 mmol)
in THF (20 mL) was added DIEA (439 .mu.L, 2.44 mmol) and
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(480 mg, 1.34 mmol). This reaction mixture was stirred at ambient
temperature overnight then directly purified by silica
chromatography (0-100% EtOAc/hexanes) to yield the title compound
(611 mg, 91% yield).
Intermediate R1
##STR00167##
[0672] O-(mesitylsulfonyl)hydroxylamine
Step 1: Preparation of tert-butyl (mesitylsulfonyl)oxycarbamate
[0673] To a 0.degree. C. solution of
2,4,6-trimethylbenzene-1-sulfonyl chloride (10.0 g, 45.72 mmol) and
tert-butyl hydroxycarbamate (6.088 g, 45.72 mmol) in MTBE (100 mL)
was added TEA (14.46 mL, 48.01 mmol) drop-wise while stirring. The
resulting suspension was stirred at 0.degree. C. for an additional
30 min and then warmed to ambient temperature. The reaction was
then diluted with water (100 mL), adjusted to pH 4 with 1 N
HCl.sub.(aq). The organic layer was dried (Na.sub.2SO.sub.4),
filtered and concentrated to yield the title compound initially as
a yellowish oil, which upon drying overnight under high vacuum
became a white solid (12.89 g, 89% yield). .sup.1H NMR (CDCl.sub.3)
.delta. 7.66 (br s, 1H), 6.98 (s, 2H), 2.67 (s, 6H), 2.32 (s, 3H),
1.31 (s, 9H).
Step 2: Preparation of O-(mesitylsulfonyl)hydroxylamine
(Intermediate R1, MSH)
[0674] To TFA (117 mL, 1521 mmol) at 0.degree. C. was slowly added
tert-butyl (mesitylsulfonyl)oxycarbamate (39.0 g, 124 mmol) over 25
min. The reaction mixture was stirred at 0.degree. C. for 1.5 h and
then quenched with the sequential addition of crushed ice
(5.times.ca. 200 mL) and water (2.times.125 mL). The resulting
thick suspension was vigorously stirred at ambient temperature for
5 min. Without allowing the filter cake to run dry, the solids were
collected by careful vacuum filtration followed by subsequent
rinsing with water (4 L) until the filtrate reached pH 6 (Caution:
explosion risk exists with dry compound at ambient temperature).
The wet filter cake was taken up in DCM (150 mL) and the resulting
biphasic solution was separated. The DCM layer was dried over
MgSO.sub.4 for 30 min and then filtered and rinsed with DCM (420
mL) to provide the title compound as a 0.22 M solution in DCM.
Intermediate R2
##STR00168##
[0675] tert-butyl
7-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)-4,7-diaza-
spiro[2.5]octane-4-carboxylate
[0676] A solution of tert-butyl
4,7-diazaspiro[2.5]octane-4-carboxylate (177 mg, 0.835 mmol) and
2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
(100 mg, 0.418 mmol) in DMSO (1.4 mL) was heated to 150.degree. C.
in a pressure tube overnight. After cooling to ambient temperature
the reaction mixture was diluted with EtOAc (30 mL) and washed with
brine (3.times.25 mL). The combined organic extracts were dried
over MgSO.sub.4, filtered and concentrated. The crude residue was
purified by silica chromatography (0-100% EtOAc/hexanes) to provide
the title compound (91 mg, 53% yield). .sup.1H NMR (CDCl.sub.3)
.delta. 8.51 (d, 1H), 7.80 (dd, 1H), 6.53 (d, 1H), 3.65 (m, 2H),
3.59 (m, 2H), 3.45 (s, 2H), 1.47 (s, 9H), 1.32 (s, 12H), 1.00 (m,
2H), 0.88 (m, 2H).
[0677] The borolane intermediates shown in Table A were prepared
according the method used for the synthesis of Intermediate R2,
using the appropriate starting materials.
TABLE-US-00006 TABLE A Intermediate Structure Name Spectral Data R3
##STR00169## tert-butyl (1S,4S)-5-(5- (4,4,5,5-tetramethyl-
1,3,2-dioxaborolan-2- yl)pyridin-2-yl)-2,5- diazabicyclo[2.2.1]
heptane-2-carboxylate .sup.1H NMR (CDCl.sub.3) .delta. 8.50 (s,
1H), 7.79 (d, 1H), 6.29 (d, 1H), 4.98 (br s, 0.6H), 4.88 (br s,
0.4H), 4.67 (s, 0.6H), 4.52 (s, 0.4H), 3.35-3.55 (m, 4H), 1.93 (d,
2H), 1.46 (s, 4H), 1.41 (s, 5H), 1.32 (s, 12H). R4 ##STR00170##
tert-butyl 3-(5-(4,4,5,5- tetramethyl-1,3,2- dioxaborolan-2-
yl)pyridin-2-yl)-3,8- diazabicyclo[3.2.1] octane-8-carboxylate
.sup.1H NMR (CDCl.sub.3) .delta. 8.53 (s, 1H), 7.81 (d, 1H), 6.52
(d, 1H), 4.35 (br m, 2H), 3.99 (br m, 2H), 3.11 (br m, 2H), 1.93
(m, 2H), 1.74 (m, 2H), 1.48 (s, 9H), 1.32 (s, 12H). R5 ##STR00171##
tert-butyl ((1R,3s,5S)-8- (5-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolan-2- yl)pyridin-2-yl)-8- azabicyclo[3.2.1]
octan-3-yl)carbamate .sup.1H NMR (CDCl.sub.3) .delta. 8.53 (s, 1H),
7.80 (d, 1H), 6.59 (d, 1H), 4.57 (m, 2H), 4.07- 4.20 (m, 2H), 2.07
(m, 2H), 1.89 (m, 4H), 1.50 (m, 2H), 1.40 (s, 9H), 1.32 (s, 12H).
R6 ##STR00172## 1-(5-(4,4,5,5- tetramethyl-1,3,2- dioxaborolan-2-
yl)pyridin-2- yl)piperidin-4-ol .sup.1H NMR (CDCl.sub.3) .delta.
8.53 (s, 1H), 7.80 (d, 1H), 6.59 (d, 1H), 4.57 (m, 2H), 4.07- 4.20
(m, 2H), 2.07 (m, 2H), 1.89 (m, 4H), 1.50 (m, 2H), 1.40 (s, 9H),
1.32 (s, 12H). R7 ##STR00173## (1R,3r,5S)-8-(5-
(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2- yl)pyridin-2-yl)-8-
azabicyclo[3.2.1] octan-3-ol .sup.1H NMR (CDCl.sub.3) .delta. 8.53
(d, 1H), 7.78 (dd, 1H), 6.48 (d, 1H), 4.52 (s, 2H), 4.04 (s, 1H),
2.31 (m, 2H), 2.18 (dt, 2H), 2.06 (m, 1H), 1.69 (d, 2H), 1.31 (s,
12H). R8 ##STR00174## tert-butyl (1-(5- (4,4,5,5-tetramethyl-
1,3,2-dioxaborolan-2- yl)pyridin-2- yl)piperidin-4- yl)carbamate
.sup.1H NMR (CDCl.sub.3) .delta. 8.52 (s, 1H), 7.79 (d, 1H), 6.60
(d, 1H), 4.46 (br s, 1H), 4.30 (m, 2H), 3.71 (br s, 1H), 3.01 (t,
2H), 2.01 (m, 2H, 1.45 (s, 9H), 1.38 (m, 2H), 1.32 (s, 12H).
Intermediate R9
##STR00175##
[0678] tert-butyl
((1R,3r,5S)-8-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-y-
l)-8-azabicyclo[3.2.1]octan-3-yl)carbamate
[0679] A solution of tert-butyl
(1R,3r,5S)-8-azabicyclo[3.2.1]octan-3-ylcarbamate (378 mg, 1.67
mmol) and
2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
(200 mg, 0.835 mmol) in DMSO (3 mL) was stirred at 150.degree. C.
in a pressure tube for 3 d. After cooling to ambient temperature
the reaction mixture was diluted with water (10 mL) and the
resulting suspension was filtered, rinsed with water and dried in
vacuo to provide the title compound (228 mg, 64% yield). .sup.1H
NMR (CDCl.sub.3) .delta. 8.53 (dd, 1H), 7.79 (dd, 1H), 6.48 (d,
1H), 4.96 (br s, 1H), 4.55 (br s, 2H), 3.75 (br s, 1H), 2.14-2.27
(m, 4H), 2.01 (m, 2H), 1.67 (d, 2H), 1.44 (s, 9H), 1.32 (s,
12H).
Intermediate R10
##STR00176##
[0680] tert-butyl
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidine-1-car-
boxylate
Step 1: Preparation of tert-butyl
4-(4-bromophenyl)piperidine-1-carboxylate
[0681] At ambient temperature, a suspension of
4-(4-bromophenyl)piperidine (1000 mg, 4.164 mmol) in DCM (20 mL)
was treated with DIEA (1451 .mu.L, 8.328 mmol) followed by
Boc-anhydride (1064 .mu.L, 4.581 mmol), and then stirred overnight.
The reaction mixture was subsequently diluted with water (50 mL)
and then extracted with DCM (3.times.50 mL). The combined organic
extracts were dried (MgSO.sub.4), filtered and concentrated in
vacuo to afford the title compound (1363 mg, 96% yield). .sup.1H
NMR (CDCl.sub.3) .delta. 7.42 (m, 2H), 7.07 (m, 2H), 4.24 (m, 2H),
2.79 (dt, 2H), 2.61 (tt, 1H), 1.79 (m, 2H), 1.58 (qd, 2H), 1.48 (s,
9H).
Step 2: Preparation of tert-butyl
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidine-1-car-
boxylate
[0682] In a pressure tube a solution of tert-butyl
4-(4-bromophenyl)piperidine-1-carboxylate (1363 mg, 4.006 mmol) in
dioxane was treated with bis(pinacolato)diboron (1526 mg, 6.009
mmol), KOAc (1179 mg, 12.02 mmol), and PdCl.sub.2(dppf).DCM (327.1
mg, 0.4006 mmol). The mixture was sparged with nitrogen for 1 min
and then sealed and heated at 100.degree. C. overnight. After
cooling to ambient temperature, the reaction mixture was diluted
with a mixture of EtOAc (75 mL)/water (50 mL)/brine (25 mL), and
the resulting emulsion was filtered through Celite.RTM. and rinsed
with EtOAc. The biphasic filtrate was separated and the organic
phase was washed with brine and then dried (MgSO.sub.4), filtered
and concentrated in vacuo. The crude residue was purified by silica
chromatography (0-50% EtOAc/hexanes) to afford the title compound
(1437 mg, 93% yield). .sup.1H NMR (CDCl.sub.3) .delta. 7.76 (d,
2H), 7.22 (m, 2H), 4.24 (d, 2H), 2.79 (dt, 2H), 2.65 (tt, 1H), 1.81
(m, 2H), 1.63 (dq, 2H), 1.48 (s, 9H), 1.33 (s, 12H).
Intermediate R11
##STR00177##
[0683]
3,3-dimethyl-1-(4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)p-
henyl)piperazin-1-yl)butan-1-one
[0684] To a mixture of
1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperazine
(850 mg, 2.95 mmol) and TEA (1233 .mu.L, 8.85 mmol) in DCM (10 mL)
was added 3,3-dimethylbutanoyl chloride (486 .mu.L, 3.54 mmol). The
reaction was stirred overnight at ambient temperature and
subsequently quenched with MeOH (1 mL), concentrated in vacuo,
taken up in water (5 mL) and sonicated. The solid was collected by
filtration, washed with water (2 mL) and hexanes (3.times.5 mL) to
afford the title compound (938 mg, 82% yield).
Intermediate P17
##STR00178##
[0685] 6-bromo-4-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
[0686] A room temperature solution of
6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P4; 0.200 g, 0.793 mmol) in DCE (7.93 mL) was treated
with AlCl.sub.3 (0.529 g, 3.97 mmol), then stirred at 80.degree. C.
for 2 h. After cooling to room temperature, the reaction mixture
was quenched with water (100 mL), and extracted with DCM. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The residue
was purified by silica chromatography (0-75% EtOAc/Hexanes as the
gradient eluent) to cleanly afford the title compound (78.6 mg, 42%
yield). MS (apci) m/z=237.9 (M+H).
Intermediate P18
##STR00179##
[0687]
4-hydroxy-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyr-
idine-3-carbonitrile
[0688] A room temperature solution of
6-bromo-4-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P17; 1.00 g, 4.20 mmol) in dioxane (42.0 mL) was
treated with
1-(4-methoxybenzyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-py-
razole (1.98 g, 6.30 mmol) and 2 M aqueous K.sub.2CO.sub.3 (4.20
mL, 8.402 mmol), then sparged with N2 for 5 min. The reaction
mixture was treated with XPhos (0.401 g, 0.842 mmol) and
Pd.sub.2(dba).sub.3 (0.192 g, 0.210 mmol), then sparged with N2 for
5 min, sealed and stirred overnight at 80.degree. C. After cooling
to room temperature, the reaction mixture was diluted with water,
and extracted with EtOAc. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered and concentrated in
vacuo. The residue was purified by silica gel (Biotage Isolera, 80
g, Isco RediSep, 0-10% MeOH in DCM as the gradient eluent) to
afford the title compound (1.06 g, 73% yield).
Intermediate P19
##STR00180##
[0689]
3-cyano-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
in-4-yl trifluoromethanesulfonate
[0690] A room temperature solution of
4-hydroxy-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine--
3-carbonitrile (Intermediate P18; 1.057 g, 3.061 mmol) in DCM (15.3
mL) was treated with
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(2.187 g, 6.121 mmol) and DIEA (1.6 mL, 9.2 mmol). The reaction
mixture was stirred overnight at room temperature, and then
quenched with water. The resulting biphasic mixture was extracted
with DCM. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (0-50% DCM/EtOAc as the
gradient eluent) to afford the title compound (958 mg, 66%
yield).
Intermediate P20
##STR00181##
[0691]
6-(1,5-dimethyl-1H-pyrazol-4-yl)-4-hydroxypyrazolo[1,5-a]pyridine-3-
-carbonitrile
[0692] A room temperature solution of
6-bromo-4-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P17; 0.250 g, 1.05 mmol) in dioxane (10.5 mL) was
treated with 1,5-dimethyl-1H-pyrazole-4-boronic acid pinacol ester
(0.350 g, 1.58 mmol) and 2M aqueous K.sub.2CO.sub.3 (1.10 mL, 2.10
mmol), then sparged with N.sub.2 for 5 min. The reaction mixture
was treated with XPhos (0.100 g, 0.210 mmol) and
Pd.sub.2(dba).sub.3 (0.0481 g, 0.0525 mmol), then sparged with
N.sub.2 for 5 min, sealed, and stirred overnight at 80.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with water, and extracted with EtOAc. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. 1:1 DCM and hexanes were added to the crude
material and the solids were filtered to afford the title compound
(0.135 g, 51% yield). MS (apci) m/z=254.1 (M+H).
Intermediate P21
##STR00182##
[0693]
3-cyano-6-(1,5-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[0694] A room temperature solution of
6-(1,5-dimethyl-1H-pyrazol-4-yl)-4-hydroxypyrazolo[1,5-a]pyridine-3-carbo-
nitrile (Intermediate P20; 0.135 g, 0.533 mmol) in DCM (2.67 mL)
was treated with
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(0.209 g, 0.586 mmol) and DIEA (0.186 mL, 1.07 mmol). The reaction
mixture was stirred overnight at room temperature, and then
quenched with water. The resulting biphasic mixture was extracted
with DCM. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (0-50% DCM/EtOAc as the
gradient eluent) to afford the title compound (125 mg, 61% yield).
MS (apci) m/z=386.0 (M+H).
Intermediate P22
##STR00183##
[0695]
6-(1,3-dimethyl-1H-pyrazol-4-yl)-4-hydroxypyrazolo[1,5-a]pyridine-3-
-carbonitrile
[0696] A room temperature solution of
6-bromo-4-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P17; 0.250 g, 1.05 mmol) in dioxane (10.5 mL) was
treated with 1,3-dimethyl-1H-pyrazole-4-boronic acid pinacol ester
(0.350 g, 1.58 mmol) and 2 M aqueous K.sub.2CO.sub.3 (1.10 mL, 2.10
mmol), then sparged with N.sub.2 for 5 min. The reaction mixture
was treated with XPhos (0.100 g, 0.210 mmol) and
Pd.sub.2(dba).sub.3 (0.0481 g, 0.0525 mmol), then sparged with
N.sub.2 for 5 min, sealed and stirred overnight at 80.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with water, and extracted with EtOAc. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. 1:1 DCM and hexanes were added to the crude
material and the solids were filtered to afford the title compound
(0.192 g, 72% yield). MS (apci) m/z=254.1 (M+H).
Intermediate P23
##STR00184##
[0697]
3-cyano-6-(1,3-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[0698] A room temperature solution of
6-(1,3-dimethyl-1H-pyrazol-4-yl)-4-hydroxypyrazolo[1,5-a]pyridine-3-carbo-
nitrile (Intermediate P22; 0.192 g, 0.757 mmol) in DCM (3.79 mL)
was treated with
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(0.298 g, 0.833 mmol) and DIEA (0.264 mL, 1.51 mmol). The reaction
mixture was stirred overnight at room temperature, and then
quenched with water. The resulting biphasic mixture was extracted
with DCM. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (0-50% DCM/EtOAc as the
gradient eluent) to afford the title compound (189 mg, 65% yield).
MS (apci) m/z=386.0 (M+H).
Intermediate P24
##STR00185##
[0699]
3-iodo-4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
e
[0700] A room temperature solution of
4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
(Intermediate P7, step 1; 1.90 g, 8.32 mmol) and PPTS (0.209 g,
0.832 mmol) in DCM (20 mL) was treated with NIS (1.97 g, 8.74 mmol)
then stirred overnight at room temperature. The reaction mixture
was diluted with DCM, and washed with 2 N aqueous NaOH. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (0-50% EtOAc in Hexanes as
the gradient eluent) to afford the title compound (2.4 g, 81%
yield). MS (apci) m/z=355.0 (M+H).
Intermediate P25
##STR00186##
[0701]
4-methoxy-3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine
[0702] A mixture of
3-iodo-4-methoxy-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
(Intermediate P24; 2.4 g, 6.78 mmol),
2,4,6-trimethyl-1,3,5,2,4,6-trioxatriborinane (2.84 mL, 20.3 mmol),
PdCl.sub.2(dppf).CH.sub.2Cl.sub.2 (0.553 g, 0.678 mmol), and
K.sub.2CO.sub.3 (4.68 g, 33.9 mmol) in DMF (67.8 mL) was sparged
with Argon, then sealed and stirred for 18 h at 100.degree. C. The
reaction mixture was diluted with water (60 mL) and extracted with
EtOAc (3.times.100 mL). The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The residue was purified by silica chromatography (using
50-100% EtOAc in Hexanes as the gradient eluent) and then by
reverse phase HPLC (5-95% water/ACN with 0.1% TFA as the gradient
eluent) to afford the title compound (500 mg, 31% yield). MS (apci)
m/z=243.1 (M+H).
Intermediate P26
##STR00187##
[0703]
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-ol
[0704] A room temperature solution of
4-methoxy-3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
(Intermediate P25; 500 mg, 2.06 mmol) in DCE (20.6 mL) was treated
with AlCl.sub.3 (1.38 g, 10.3 mmol), then stirred for 2 h at
80.degree. C. After cooling to room temperature, the reaction
mixture was quenched with water (100 mL), and extracted with 20%
iPrOH in DCM. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (390 mg, 83% yield). MS (apci)
m/z=229.1 (M+H).
Intermediate P27
##STR00188##
[0705]
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[0706] A room temperature solution of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-ol
(Intermediate P26; 0.390 g, 1.71 mmol) in DCM (17.1 mL) was treated
with DIEA (0.613 mL, 3.42 mmol) and
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(0.671 g, 1.88 mmol). The reaction mixture was stirred for 5 d at
room temperature. The reaction mixture was purified directly by
silica chromatography (25-75% EtOAc/Hexanes as the gradient eluent)
to afford the title compound (400 mg, 65% yield). MS (apci)
m/z=361.0 (M+H).
Intermediate R12
##STR00189##
[0707] (R)-3-hydroxy-2-phenylpropanoic acid
Step 1: Preparation of
(S)-4-benzyl-3-(2-phenylacetyl)oxazolidin-2-one
[0708] A solution of (S)-(-)-4-benzyl-2-oxazolidinone (1.34 g, 7.57
mmol) in THF (100 mL) was cooled to -78.degree. C. then treated
with 1.0 M lithium bis(trimethylsilyl)amide in THF (7.95 mL, 7.95
mmol). The reaction mixture was stirred for 30 min at -78.degree.
C., then stirred 16 h at room temperature, before quenching with
water. The resulting biphasic mixture was extracted with EtOAc. The
combined organic extracts were washed with water and brine, then
dried over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated
in vacuo. The residue was purified by silica chromatography (5-60%
Hexanes-EtOAc as the gradient eluent) to cleanly afford the title
compound (1.55 g, 69% yield). MS (apci) m/z=252
[(M-CO.sub.2)+1].
Step 2: Preparation of
(S)-4-benzyl-3-((R)-3-hydroxy-2-phenylpropanoyl)oxazolidin-2-one
[0709] A room temperature solution of
(S)-4-benzyl-3-(2-phenylacetyl)oxazolidin-2-one (step 1; 1.55 g,
5.25 mmol) in DCM (50 mL) was sparged with N.sub.2, then cooled to
0.degree. C. The resulting degassed solution was treated with
titanium (IV) chloride (0.604 mL, 5.51 mmol), and stirred for 5 min
at 0.degree. C., before treating with DIEA (1.01 mL, 5.77 mmol).
The resulting mixture was stirred for 1 h at 0.degree. C., then
treated sequentially with 0.60 M 1,3,5-trioxane in DCM (10 mL, 6.04
mmol) and additional titanium (IV) chloride (0.604 mL, 5.51 mmol).
The reaction mixture was stirred for an additional 4 h at 0.degree.
C., before quenching with saturated NH.sub.4Cl. The resulting
biphasic mixture was extracted with DCM. The combined organic
extracts were washed with water, then dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (5-50% DCM-Acetone as the
gradient eluent) to cleanly afford the title compound (1.22 g, 71%
yield). .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta. 7.34-7.23 (m,
10H), 5.20-5.14 (m, 2H), 4.74-4.70 (m, 1H), 4.28-4.24 (t, 1H),
4.16-4.08 (m, 2H), 3.61-3.56 (m, 1H), 3.06-2.96 (m, 2H).
Step 3: Preparation of (R)-3-hydroxy-2-phenylpropanoic Acid
[0710] A cold (0.degree. C.) solution of
(S)-4-benzyl-3-((R)-3-hydroxy-2-phenylpropanoyl)oxazolidin-2-one
(step 2; 1.22 g, 3.75 mmol) in THF (40 mL) was treated sequentially
with 30% (w/w) aqueous H.sub.2O.sub.2 (3.60 mL, 37.5 mmol) and 2 M
aqueous LiOH in (3.75 mL, 7.50 mmol). The resulting reaction
mixture was stirred for 2 h at room temperature. The reaction
mixture was treated with 2 M aqueous KOH (3.75 mL, 7.50 mmol), and
refluxed for 2 h. After cooling to room temperature, the reaction
mixture was treated with 1 M aqueous Na.sub.2SO.sub.3 (5 mL),
before concentrating in vacuo to remove the volatile organics. The
resulting aqueous residue was diluted with Et.sub.2O, and washed
with 1 M aqueous NaOH. The aqueous extracts were acidified to pH 2
using 4 M aqueous HCl, and extracted with 4:1 DCM/iPrOH. The
combined DCM/iPrOH extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by C18 reverse phase chromatography (5-95% water/ACN
with 0.1% TFA as the gradient eluent) to cleanly afford the title
compound (355.6 mg, 57% yield). .sup.1H NMR (400 MHz, DMSO-d.sub.6)
.delta. 12.34 (s, 1H), 7.34-7.23 (m, 5H), 3.93-3.89 (t, 1H),
3.65-3.54 (m, 2H).
Intermediate R13
##STR00190##
[0711] tert-butyl
3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-yl)azetidine-
-1-carboxylate
Step 1: Preparation of tert-butyl
3-(5-bromopyridin-2-yl)azetidine-1-carboxylate
[0712] A room temperature suspension of zinc dust (<10 um, 98+%;
0.353 g, 5.40 mmol) in THF (10 mL) was treated with
1,2-dibromoethane (0.0310 mL, 0.360 mmol) and chlorotrimethylsilane
(0.0457 mL, 0.360 mmol) then stirred for 15 min at 60.degree. C.
The resulting mixture was treated with a solution of tert-butyl
3-iodoazetidine-1-carboxylate (1.02 g, 3.60 mmol) in DMA (10 mL),
and stirred an additional 15 min at 60.degree. C. before cooling to
room temperature. The reaction mixture was treated with
2,5-dibromopyridine (0.896 g, 3.78 mmol),
PdCl.sub.2(dppf).CH.sub.2Cl.sub.2 (0.147 g, 0.180 mmol), and CuI
(0.0343 g, 0.180 mmol), sparged with Argon, sealed, and stirred 16
h at 80.degree. C. The reaction mixture was cooled to room
temperature, diluted with EtOAc and water, and then filtered. The
filtrate was diluted with additional EtOAc, and washed with water
and brine. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (5-70% Hexanes-EtOAc as the
gradient eluent) to cleanly afford the title compound (357.6 mg,
32% yield). .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta. 8.72-8.71
(m, 1H), 8.01-7.98 (m, 1H), 7.34-7.31 (m, 1H), 4.19-4.15 (m, 2H),
3.96-3.87 (m, 3H), 1.39 (s, 9H).
Step 2: Preparation of tert-butyl
3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-yl)azetidine-
-1-carboxylate
[0713] A room temperature solution of tert-butyl
3-(5-bromopyridin-2-yl)azetidine-1-carboxylate (step 1; 153.5 mg,
0.4901 mmol) in dioxane (4.9 mL) was treated with
bis(pinacolato)diboron (136.9 mg, 0.5391 mmol),
PdCl.sub.2(dppf).CH.sub.2Cl.sub.2 (40.02 mg, 0.04901 mmol), and
CH.sub.3CO.sub.2K (144.3 mg, 1.470 mmol). The resulting mixture was
sparged with Argon, sealed, and stirred 16 h at 100.degree. C.
before cooling to room temperature. The reaction mixture was
diluted with EtOAc, and washed with water and brine. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo to afford the title compound
(176.0 mg, 99.7% yield). MS (apci) m/z=279.1; (M(BOH)+1).
[0714] The compounds in Table DD were prepared according to the
method described for Intermediate R13, replacing tert-butyl
3-iodoazetidine-1-carboxylate with the appropriate alkyl iodide in
Step 1. Reactions were monitored by LCMS, and reaction times were
adjusted accordingly. Products were purified as in Intermediate R13
utilizing the appropriate gradient eluent in chromatography to
cleanly afford the title compounds.
TABLE-US-00007 TABLE DD MS (apci) Intermediate Structure Chemical
Name m/z R14 ##STR00191## tert-butyl 3-(5-(4,4,5,5-
tetramethyl-1,3,2- dioxaborolan-2-yl)pyridin- 2-yl)pyrrolidine-1-
carboxylate 293.1 R15 ##STR00192## tert-butyl 3-(5-(4,4,5,5-
tetramethyl-1,3,2- dioxaborolan-2-yl)pyridin- 2-yl)piperidine-1-
carboxylate 388.1
Intermediate R16
##STR00193##
[0715] 1-(5-boronopyridin-2-yl)-4-ethylpiperidine-4-carboxylic
acid
[0716] A room temperature solution of
2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
(2.0 g, 9.0 mmol) in DMSO (18 mL) was treated with
4-ethylpiperidine-4-carboxylic acid (4.7 g, 30 mmol) and
K.sub.2CO.sub.3 (5.0 g, 36 mmol), then stirred overnight at
80.degree. C. After cooling to room temperature, the reaction
mixture was diluted with water, and the resulting mixture was
extracted with 20% MeOH/DCM. The combined organic extracts were
dried over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated
in vacuo to afford the title compound containing impurities (4.2 g,
quantitative yield). The material was used without further
purification. MS (apci) m/z=279.1 (M+H).
Intermediate R17
##STR00194##
[0717]
(6-(4-ethyl-4-(isopropylcarbamoyl)piperidin-1-yl)pyridin-3-yl)boron-
ic acid
[0718] A room temperature solution of
1-(5-boronopyridin-2-yl)-4-ethylpiperidine-4-carboxylic acid
(Intermediate R16; 2.45 g, 8.81 mmol) in DMA (35.2 mL) was treated
with DIEA (8.44 mL, 48.5 mmol), propan-2-amine (2.25 mL, 26.4
mmol), and HATU (8.37 g, 22.0 mmol), then allowed to stir overnight
at room temperature. The reaction mixture was diluted with water
and extracted with 20% MeOH/DCM. The combined organic extracts were
dried over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated
in vacuo. The crude material was purified by C18 reverse phase
chromatography (0-80% ACN/water as the gradient eluent) to afford
the title compound (1.0 g, 36% yield). MS (apci) m/z=320.2
(M+H).
Intermediate R18
##STR00195##
[0719]
(S)-(6-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyridin-3-
-yl)boronic acid
[0720] A room temperature solution of
(6-(piperazin-1-yl)pyridin-3-yl)boronic acid (1.5 g, 7.25 mmol) in
DMA (36.2 mL) was treated with DIEA (5.05 mL, 29.0 mmol) and
stirred for 20 min at room temperature and then treated with
4-nitrophenyl carbonochloridate (2.92 g, 14.5 mmol). The resulting
mixture was stirred overnight at room temperature. DIEA (5 mL, 29.0
mmol) and (S)-3-methoxypyrrolidine (3.66 g, 36.2 mmol) were added,
and the reaction mixture was stirred for 48 h at room temperature.
The reaction mixture was diluted with water and extracted with 20%
MeOH/DCM. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by C18 reverse phase chromatography (0-40% ACN/water
as the gradient eluent) to afford the title compound (1.0 g, 41%
yield). MS (apci) m/z=335.1 (M+H).
Intermediate R19
##STR00196##
[0721] 1-ethyl-3-vinyl-1H-pyrazole
[0722] A room temperature solution of 1-ethyl-3-iodopyrazole (2.52
g, 11.4 mmol) in 4:1 dioxane/water (100 mL) was treated with
potassium vinyltrifluoroborate (1.67 g, 12.5 mmol), XPhos (0.107 g,
0.225 mmol) and Pd.sub.2(dba).sub.3 (0.0516 g, 0.0563 mmol), then
sparged with Argon, sealed, and stirred 16 h at 100.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with water, extracted with DCM, and filtered. The filtrate was
diluted with additional DCM, and washed with water. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The residue was purified by
silica chromatography (5-70% Hexanes-EtOAc as the gradient eluent)
to afford the title compound (689.1 mg, 50% yield). MS (apci)
m/z=123.1 (M+H).
Intermediate R20
##STR00197##
[0723] 1,3-diethyl-1H-pyrazole
[0724] A room temperature solution of 1-ethyl-3-vinyl-1H-pyrazole
(Intermediate R19; 689.1 mg, 5.641 mmol) in MeOH (28 mL) was
treated with 10% Pd/C (600.3 mg, 0.2820 mmol). The resulting
mixture was sparged with N.sub.2 and then with H.sub.2 for several
minutes, then stirred under an atmosphere of H.sub.2 for 16 h at
ambient temperature and pressure. The resulting mixture was
filtered through GF/F paper and the filtrate was concentrated in
vacuo to afford the title compound (453.3 mg, 65% yield). MS (apci)
m/z=125.2 (M+H).
Intermediate R21
##STR00198##
[0725] 4-bromo-1,3-diethyl-1H-pyrazole
[0726] A room temperature solution of 1,3-diethyl-1H-pyrazole
(Intermediate R20; 390.2 mg, 3.142 mmol) in ACN (30 mL) was treated
with NBS (559.2 mg, 3.142 mmol), then stirred for 16 h at room
temperature. The reaction mixture was concentrated in vacuo. The
residue was purified by silica chromatography (5-50% Hexanes-EtOAc
as the gradient eluent) to afford the title compound (418.2 mg, 66%
yield). MS (apci) m/z=203.0 (M+H). .sup.1H NMR (400 MHz,
DMSO-d.sub.6) .delta. 7.86 (s, 1H), 4.07-4.01 (q, 2H), 2.52-2.47
(q, 2H), 1.34-1.30 (t, 3H), 1.16-1.12 (t, 3H).
Intermediate R22
##STR00199##
[0727]
1-ethyl-3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-
-pyrazole
[0728] A -78.degree. C. solution of
4-bromo-1-ethyl-3-methyl-1H-pyrazole (404.4 mg, 2.139 mmol) in THF
(21 mL) was treated dropwise with 2.5 M n-BuLi in hexanes (1198
.mu.L, 2.995 mmol). The resulting mixture was stirred for 30 min at
-78.degree. C., then treated with
2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (916.4 .mu.L,
4.492 mmol). The reaction mixture was stirred for 30 min at room
temperature, and then treated with saturated NH.sub.4C1. The
biphasic mixture was extracted with EtOAc, and the combined organic
extracts were washed with brine. The combined organic extracts were
dried over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated
in vacuo. The residue was purified by silica chromatography (5-70%
Hexanes-EtOAc as the gradient eluent) to afford the title compound
(324.5 mg, 64% yield). .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.
7.77 (s, 1H), 4.05-3.99 (q, 2H), 2.21 (s, 3H), 1.33-1.29 (t, 3H),
1.23 (s, 12H).
[0729] The compounds in Table EE were prepared according to the
method described for Intermediate R22, replacing
4-bromo-1-ethyl-3-methyl-1H-pyrazole with the appropriate
commercially available bromopyrazole (except where noted).
Reactions were monitored by LCMS, and reaction times were adjusted
accordingly. Products were purified as in Intermediate R22
utilizing the appropriate gradient eluent in chromatography to
cleanly afford the title compounds.
TABLE-US-00008 TABLE EE Intermediate # Structure Chemical Name
Spectral data R23 ##STR00200## 3-ethyl-1-methyl-4-
(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2- yl)-1H-pyrazole .sup.1H
NMR (400 MHz, CDCl.sub.3) .quadrature..quadrature. = 7.53 (s, 1 H),
3.80 (s, 3 H), 2.76 (q, 2 H), 1.28 (s, 12 H), 1.22 (t, 3 H) R24
##STR00201## 1-isopropyl-3-methyl- 4-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolan-2- yl)-1H-pyrazole MS (apci) m/z = 251.2 (M + H)
R25 ##STR00202## 1-(tert-butyl)-3-methyl- 4-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolan-2- yl)-1H-pyrazole MS (apci) m/z = 265.2 (M + H)
R26* ##STR00203## 1,3-diethyl-4-(4,4,5,5- tetramethyl-1,3,2-
dioxaborolan-2-yl)-1H- pyrazole MS (apci) m/z = 251.2 (M + H)
*prepared from Intermediate R21
Intermediate R27
##STR00204##
[0730] tert-butyl
4-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)piperazine-
-1-carboxylate
[0731] A room temperature solution of tert-butyl
4-(6-chloropyridin-3-yl)piperazine-1-carboxylate (100 mg, 0.336
mmol) in dioxane (4 mL) was treated with bis(pinacolato)diboron
(93.8 mg, 0.369 mmol), Pd(OAc).sub.2 (9.05 mg, 0.0403 mmol), X-Phos
(28.8 mg, 0.0604 mmol), and KOAc (98.9 mg, 1.01 mmol). The
resulting mixture was sparged with Argon, sealed, and stirred
overnight at 90.degree. C. before cooling to room temperature. The
reaction mixture was concentrated in vacuo and the crude product
was used in the next step without purification, assuming
quantitative yield. MS (apci) m/z=208 (M(B(OH).sub.2--BOC).
Preparation of Synthetic Examples
Example 1
##STR00205##
[0732] tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[0733] To a mixture of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 10.0 g, 26.9 mmol) and
tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine-
-1-carboxylate (12.6 g, 32.3 mmol) in dioxane (250 mL) was added 2
M Na.sub.2CO.sub.3(aq) (14.3 g, 135 mmol), and the reaction mixture
was sparged with nitrogen for 15 min before introducing
Pd.sub.2(dba).sub.3 (1.23 g, 1.35 mmol) and X-Phos (2.57 g, 5.39
mmol). The mixture was sparged with nitrogen for an additional 5
min and then heated at 80.degree. C. overnight. After cooling to
ambient temperature, the reaction mixture was poured into H.sub.2O
(1.5 L) and stirred for 2 h. The resulting suspension was filtered
and rinsed sequentially with H.sub.2O (3.times.200 mL), MTBE
(4.times.100 mL) and hexanes (4.times.100 mL), yielding the title
compound as a solid after drying in vacuo overnight (12 g, 92%
yield). MS (apci) m/z=485.2 (M+H).
Example 2
##STR00206##
[0734]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
[0735] To a solution of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (Example 1, 12.0 g, 24.77 mmol)
in MeOH (12 mL) and DCM (50 mL) was added HCl (5-6M in iPrOH, 49.53
mL, 247.7 mmol). After stirring at ambient temperature for 21 h the
reaction was diluted with MeOH (50 mL) and DCM (50 mL). The
suspension was stirred at ambient temperature until LCMS indicated
the reaction was complete. The reaction mixture was filtered,
rinsed with Et.sub.2O (5.times.50 mL) and then dried for 19 h in a
45.degree. C. vacuum oven to yield the title compound (9.97 g, 88%
yield). MS (apci) m/z=385.1 (M+H).
Example 2a
##STR00207##
[0736]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile
[0737] To a solution of tert-Butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (Example 1, 1.26 g, 2.60 mmol)
in 20% MeOH/DCM (50 mL) was added 4 N HCl in dioxane (10 mL). The
resulting mixture was stirred overnight and then treated with water
and extracted with 20% MeOH/DCM (3.times.50 mL). After
phase-separation, the combined organic extracts and the aqueous
layer were further treated independently. The aqueous layer was
treated with saturated NaHCO.sub.3(aq), and the resulting
suspension was vacuum filtered and rinsed with water and hexanes to
provide the title compound (600 mg). The combined organic extracts
from the reaction were washed with saturated NaHCO.sub.3(aq), then
dried (Na.sub.2SO.sub.4), filtered and concentrated in vacuo to
provide a second batch of the title compound (243 mg). The two
batches of product were combined to provide the title compound (843
mg, 84% yield). MS (apci) m/z=385.1 (M+H).
Example 3
##STR00208##
[0738]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(3-(methylsulfonyl)propanoyl)p-
iperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0739] 3-(Methylsulfonyl)propanoic acid (12 mg, 0.078 mmol) and
HATU (30 mg, 0.078 mmol) were dissolved in DMA (325 .mu.L) at
ambient temperature. After 25 min,
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (Example 2a, 25 mg, 0.065 mmol) was
added in one portion followed by addition of DIEA (34 .mu.L, 0.20
mmol). After stirring overnight at ambient temperature the
resulting suspension was vacuum filtered and the solids were rinsed
successively with ice-cold MeOH (1 mL) and Et.sub.2O (3 mL) to
provide the title compound (18 mg, 52% yield). MS (apci) m/z=519.0
(M+H).
Example 4
##STR00209##
[0740]
((S)-4-(6-(4-(2-hydroxy-3-phenylpropanoyl)piperazin-1-yl)pyridin-3--
yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0741] (S)-2-Hydroxy-3-phenylpropanoic acid (8.18 mg, 0.0492 mmol)
and HATU (18.7 mg, 0.0492 mmol) were dissolved in DMA (164 .mu.L)
at ambient temperature. After 25 min,
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2, 15 mg,
0.033 mmol) was added in one portion followed by DIEA (29 .mu.L,
0.16 mmol). The reaction was stirred overnight at ambient
temperature and then directly purified by reverse phase
chromatography (5-50% ACN/water) to provide the title compound
(16.8 mg, 94% yield). MS (apci) m/z=533.1 (M+H).
[0742] The compounds in the Table B were prepared in a similar
fashion as described for the syntheses of Examples 3 and 4,
replacing 3-(methylsulfonyl)propanoic acid or
(S)-2-hydroxy-3-phenylpropanoic acid with the appropriate acid
starting material.
TABLE-US-00009 TABLE B MS (apci) Ex# Structure Chemical Name m/z 5
##STR00210## 6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4- (2-(pyridin-2-
yl)acetyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3-
carbonitrile 504.1 (M + H) 6 ##STR00211## (S)-4-(6-(4-(2-
hydroxy-2- phenylacetyl)piperazin- 1-yl)pyridin-3-yl)-6-
(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5- a]pyridine-3- carbonitrile
519.1 (M + H) 7 ##STR00212## (R)-4-(6-(4-(3- hydroxy-3-phenyl-
propanoyl)piperazin- 1-yl)pyridin-3- yl)-6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 533.1 (M + H) 8
##STR00213## (S)-4-(6-(4-(3- hydroxy-3-phenyl- propanoyl)piperazin-
1-yl)pyridin-3- yl)-6-(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 533.1 (M + H) 9 ##STR00214##
(R)-4-(6-(4-(2- hydroxy-3-phenyl- propanyl)piperazin-
1-yl)pyridin-3- yl)-6-(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 533.1 (M + H) 10 ##STR00215##
4-(6-(4-(2-(2- fluorophenyl)-2- hydroxyacetyl)piperazin-
1-yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 537.2 (M + H) 11 ##STR00216##
4-(6-(4-((1S,3S)-3- hydroxycyclopentane- 1-carbonyl)piperazin-
1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 497.1 (M + H) 12 ##STR00217##
4-(6-(4-((1S,3R)-3- hydroxycyclopentane- 1-carbonyl)piperazin-
1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 497.1 (M + H) 13 ##STR00218##
(S)-4-(6-(4-(3,3- difluorocyclopentane- 1-carbonyl)piperazin-
1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 517.1 (M + H) 14 ##STR00219##
(R)-6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4- (2-phenyl-
propanyl)piperazin- 1-yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3-
carbonitrile 517.1 (M + H) 15 ##STR00220## (S)-6-(1-methyl-1H-
pyrazol-4-yl)-4-(6-(4- (2-phenyl- propanoyl)piperazin-
1-yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 517.2
(M + H) 16 ##STR00221## 4-(6-(4-(3-hydroxy-2- phenylpropanoyl)
piperazin-1-yl)pyridin-3- yl)-6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 533.1 (M + H) 17
##STR00222## (S)-tert-butyl (3-(4-(5- (3-cyano-6-(1-methyl-
1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-
2-yl)piperazin-1-yl)-3- oxo-1- phenylpropyl)carbamate 632.1 (M + H)
18 ##STR00223## tert-butyl tert-butyl(2- (4-(5-(3-cyano-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-
2-yl)piperazin-1-yl)-2- oxoethyl)carbamate 598.2 (M + H) 19
##STR00224## 6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4-
(2-(6-methylpyridin-3- yl)acetyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 518.1 (M + H) 20
##STR00225## 6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4-
(2-(1-methyl-1H- pyrazol-5- yl)acetyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 507.1 (M + H) 21
##STR00226## 4-(6-(4- (cyclopentanecarbonyl) piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 481.2 (M + H)
Example 22
##STR00227##
[0743]
4-(6-(4-(2-(tert-butylamino)acetyl)piperazin-1-yl)pyridin-3-yl)-6-(-
1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0744] To a solution of
tert-butyl(2-(4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperazin-1-yl)-2-oxoethyl)carbamate
(Example 18, 10 mg, 0.017 mmol) in DCM (0.1 mL) was added 5 M HCl
in iPrOH (167 .mu.L, 0.84 mmol) and the reaction mixture was
stirred at ambient temperature for 1 h. The reaction mixture was
then concentrated in vacuo to afford the title compound (9 mg, 93%
yield). MS (apci) m/z=498.2 (M+H).
Example 23
##STR00228##
[0745]
(S)-4-(6-(4-(3-amino-3-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0746] To a solution of (S)-tert-butyl
(3-(4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)piperazin-1-yl)-3-oxo-1-phenylpropyl)carbamate
(Example 17, 18 mg, 0.028 mmol) in DCM (0.1 mL) was added 5 M HCl
in iPrOH (285 .mu.L, 1.4 mmol) and the reaction mixture was stirred
at ambient temperature for 1 h. The reaction mixture was then
concentrated in vacuo to afford the title compound (17 mg, 98%
yield). MS (apci) m/z=532.2 (M+H).
Example 24
##STR00229##
[0747]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(1-phenylcyclopentanecarbonyl)-
piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0748] 1-Phenylcyclopentanecarboxylic acid (12.5 mg, 0.0656 mmol)
and HATU (24.9 mg, 0.0656 mmol) were dissolved in DMA (273 .mu.L)
at ambient temperature and the reaction mixture was stirred for 25
min, followed by addition of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (25 mg, 0.0547 mmol)
and DIEA (47.6 .mu.L, 0.273 mmol), each in one portion. After
overnight stirring the resulting suspension was diluted with EtOAc
(0.5 mL) and vacuum filtered and rinsed successively with EtOAc
(3.times.0.5 mL) and Et.sub.2O (1 mL) to provide the title compound
as a white solid (21 mg, 68% yield). MS (apci) m/z=557.2 (M+H).
[0749] The compounds in Table C were prepared according the method
used for the synthesis of Example 24, replacing
1-phenylcyclopentanecarboxylic acid with the appropriate acid
starting material.
TABLE-US-00010 TABLE C MS (apci) Ex# Structure Chemical Name m/z 25
##STR00230## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(1-
phenylcyclopropane-1- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 529.1 (M + H) 26
##STR00231## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-methyl-2-
phenylpropanoyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 531.2 (M + H) 27
##STR00232## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(1-
phenylcyclobutane-1- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 543.2 (M + H) 28
##STR00233## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(1-
phenylcyclohexane-1- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 571.2 (M + H) 29
##STR00234## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(3-methyl-2-
phenylbutanoyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 545.2 (M + H)
Example 30
##STR00235##
[0750]
(S)-4-(6-(4-(2-hydroxypropanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-m-
ethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0751] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (0.030 g, 0.0780 mmol) and
L-(+)-Lactic acid (0.00729 mL, 0.0975 mmol) in DMF (2.60 mL) was
added HATU (0.0386 g, 0.101 mmol). The reaction mixture was stirred
for 24 h at ambient temperature and then quenched with water (10
mL). The reaction mixture was then extracted with EtOAc (3.times.15
mL) and the combined organic layers were dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The crude
residue was purified by silica chromatography (0-7% of a 5%
NH.sub.4OH in MeOH/DCM) to provide the title compound (0.010 g, 28%
yield). MS (apci) m/z=457.2 (M+H).
[0752] The compounds in Table D were prepared and purified
according the method used for the synthesis of Example 30,
replacing L-(+)-Lactic acid with the appropriate acid starting
material.
TABLE-US-00011 TABLE D Ex# Structure Chemical Name MS (apci) m/z 31
##STR00236## 4-(6-(4-(2-hydroxy-2- methylpropanoyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 471.2 (M + H) 32 ##STR00237##
(R)-4-(6-(4-(2-hydroxy- propanoyl)piperazin- 1-yl)pyridin-3-yl)-6-
(1-methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
457.2 (M + H)
Example 33
##STR00238##
[0753]
4-(6-(4-(3-(dimethylamino)propanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate
[0754] To a mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (30 mg 0.066 mmol) in
DCM (1 mL) at ambient temperature was sequentially added
N-methylmorpholine (14 .quadrature.L, 0.13 mmol),
3-(dimethylamino)propanoic acid (9.2 mg, 0.079 mmol), and HATU (25
mg, 0.066 mmol). The reaction mixture was stirred at ambient
temperature for 12 h, and then concentrated and purified by
reverse-phase preparative HPLC (10 to 80% acetonitrile/water with
0.1 v/v % TFA) to yield the title compound (17 mg, 36% yield). MS
(apci) m/z=484.2 (M+H).
[0755] The compounds in Table E were prepared according the method
described for the synthesis of Example 33, replacing
3-(dimethylamino)propanoic acid with the appropriate acid starting
material, and utilizing reverse-phase preparative HPLC (10 to 80%
acetonitrile/water with 0.1 v/v % TFA or 0.04 v/v % NH.sub.4OH) to
yield purified title compounds as TFA salts unless otherwise
stated.
TABLE-US-00012 TABLE E MS (apci) Ex# Structure Chemical Name m/z 34
##STR00239## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-
pivaloylpiperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 2,2,2- trifluoroacetate 469.2 (M + H) 35
##STR00240## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(1-methyl-1H-
pyrazole-4- carbonyl)piperazin-1- yl)pyridine-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 2,2,2- trifluoroacetate
493.1 (M + H) 36 ##STR00241## 4-(6-(4-(1-methyl-1H- imidazole-4-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile bis(2,2,2-
trifluoroacetate) 493.2 (M + H) 37 ##STR00242##
6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(5- methylisoxazole-3-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 2,2,2- trifluoroacetate 494.2 (M + H) 38
##STR00243## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(pyrazine-2-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 2,2,2- trifluoroacetate 491.2 (M + H) 39
##STR00244## 4-(6-(4-(2-(2,6-difluoro- phenyl)acetyl)piperazin-
1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 2,2,2- trifluoroacetate
539.2 (M + H) 40 ##STR00245## 4-(6-(4-(2-
methoxyacetyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
2,2,2- trifluoroacetate 457.2 (M + H) 41 ##STR00246##
4-(6-(4-(1,3-dimethyl-1H- pyrazole-4- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 2,2,2- trifluoroacetate
507.2 (M + H) 42 ##STR00247## 4-(6-(4-(2-(1-methyl-1H- pyrazol-3-
yl)acetyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 2,2,2- trifluoroacetate
507.2 (M + H) 43 ##STR00248## 6-(1-methyl-1H-pyrazol-4-
yl)-4-(6-(4-(3-(pyridin-3- yl)propanoyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile bis(2,2,2-
trifluoroacetate) 518.2 (M + H) 44 ##STR00249## (S)-6-(1-methyl-1H-
pyrazol-4-yl)-4-(6-(4- prolylpiperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile bis(2,2,2-
trifluoroacetate 482.1 (M + H) 45 ##STR00250## (R)-6-(1-methyl-1H-
pyrazol-4-yl)-4-(6-(4- prolylpiperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile bis(2,2,2-
trifluoroacetate) 482.2 (M + H) 46 ##STR00251##
6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(piperidine-4-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile bis(2,2,2- trifluoroacetate) 496.2 (M + H) 47
##STR00252## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(piperidine-3-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile bis(2,2,2- trifluoroacetate) 496.2 (M + H) 48
##STR00253## (R)-4-(6-(4-(2-amino-2- phenylacetyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile bis(2,2,2-
trifluoroacetate 518.2 (M + H) 49 ##STR00254##
6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(5- methylpyrazine-2-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile bis(2,2,2- trifluoroacetate) 505.1 (M + H) 50
##STR00255## (S)-4-(6-(4-(2-amino-2- phenylacetyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile bis(2,2,2-
trifluoroacetate) 518.2 (M + H) 51 ##STR00256## 4-(6-(4-(2,6-
difluorobenzoyl)piperazin- 1-yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
2,2,2- trifluoroacetate 525.1 (M + H) 52 ##STR00257## 4-(6-(4-(4-
(dimethylamino)butanoyl) piperazin-1-yl)pyridin-3-yl)-
6-(1-methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile bis(2,2,2- trifluoroacetate) 498.2 (M + H)
Example 53
##STR00258##
[0756]
(R)-4-(6-(4-(2-hydroxy-4-methylpentanoyl)piperazin-1-yl)pyridin-3-y-
l)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0757] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (25 mg, 0.065 mmol) in DMF (2.17 mL)
was added DIEA (0.0114 mL, 0.065 mmol),
(R)-2-hydroxy-4-methylpentanoic acid (8.6 mg, 0.065 mmol), and HBTU
(27.1 mg, 0.0715 mmol). The reaction mixture was heated to
40.degree. C., stirred overnight, and then quenched with water. The
reaction mixture was extracted with EtOAc (3.times.10 mL) and the
combined organic layers were dried over anhydrous Na.sub.2SO.sub.4,
filtered and concentrated in vacuo. The crude residue was purified
by silica chromatography (0-50% of a 20% MeOH/DCM in EtOAc) to
provide the title compound (0.0128 g, 40% yield). MS (apci)
m/z=499.3 (M+H).
[0758] The compounds in Table F were prepared and purified
according the method used for the synthesis of Example 53,
replacing (R)-2-hydroxy-4-methylpentanoic acid with the appropriate
acid starting material.
TABLE-US-00013 TABLE F MS (apci) Ex# Structure Chemical Name m/z 54
##STR00259## (S)-4-(6-(4-(2-hydroxy-3- methylbutanoyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 485.2 (M + H) 55
##STR00260## (R)-4-(6-(4-(3- hydroxybutanoyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 471.2 (M + H) 56
##STR00261## (S)-4-(6-(4-(2-hydroxy-4- methylpentanoyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 499.1 (M + H) 57
##STR00262## (S)-4-(6-(4-(3- hydroxybutanoyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 471.1 (M + H) 58
##STR00263## (R)-6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4-
(tetrahydrofuran-2- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 483.1 (M + H) 59
##STR00264## 4-(6-(4-(2,2- difluoropropanoyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 477.1 (M + H) 60
##STR00265## (S)-6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-
(tetrahydrofuran-2- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 483.1 (M + H) 61
##STR00266## (S)-6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(3,3,3-
trifluoro-2- hydroxypropanoyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 511.2 (M + H) 62
##STR00267## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-
(tetrahydrofuran-3- yl)acetyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 497.1 (M + H) 63
##STR00268## 4-(6-(4-(3-hydroxy-3- methylpentanoyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 499.1 (M + H)
Example 64
##STR00269##
[0759]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(pyrrolidin-1-yl)acetyl)pip-
erazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0760] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (30 mg, 0.078 mmol) and TEA (54 .mu.L,
0.39 mmol) in DMF (3 mL) was added 2-chloroacetyl chloride (9.3
.mu.L, 0.117 mmol). The reaction was stirred at ambient temperature
for 1 h then pyrrolidine (51.6 .mu.L, 0.62 mmol) was added and the
reaction was stirred for an additional 2 h. The reaction mixture
was quenched with water (15 mL) and extracted with EtOAc
(3.times.20 mL). The combined organic layers were dried over
anhydrous Na.sub.2SO.sub.4, filtered, concentrated and purified by
silica chromatography (0-50% of 20% MeOH/DCM in EtOAc) to provide
the title compound (0.0244 g, 63% yield). MS (apci) m/z=496.2
(M+H). .sup.1H NMR (DMSO) .delta. 9.20 (d, 1H), 8.61 (s, 1H), 8.37
(d, 1H), 8.36 (s, 1H), 8.09 (s, 1H), 7.82 (dd, 1H), 7.75 (d, 1H),
6.97 (d, 1H), 3.85 (s, 3H), 3.60 (m, 8H), 3.37 (s, 2H), 2.53 (s,
4H), 1.68 (s, 4H).
Example 65
##STR00270##
[0761]
4-(6-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-met-
hyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0762] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (40 mg, 0.10 mmol) and pyridine (33.7
.mu.L, 0.42 mmol) in DCM (4 mL) was added 3,3-Dimethylbutyryl
chloride (0.97 mL, 0.21 mmol). The reaction was stirred at ambient
temperature for 2 h and then quenched with water (10 mL) and
extracted with EtOAc (3.times.15 mL). The combined organic layers
were dried over anhydrous Na.sub.2SO.sub.4, filtered, concentrated
and purified by silica chromatography (0-20% MeOH with NH.sub.4OH
in DCM) to provide the title compound (0.0327 g, 65% yield). MS
(apci) m/z=483.2 (M+H).
Example 66
##STR00271##
[0763]
4-(6-(4-isobutyrylpiperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyraz-
ol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0764] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.022 mmol) in
DCM (2 mL) was added isobutyryl chloride (3.5 mg, 0.033 mmol) and
TEA (30 .mu.L, 0.22 mmol). The reaction was stirred at ambient
temperature for 1 h and then purified by reverse phase
chromatography (0-75% ACN/water) to afford the title compound (9
mg, 91% yield). MS (apci) m/z=455.1 (M+H).
Example 67
##STR00272##
[0765]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-propionylpiperazin-1-yl)pyridi-
n-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0766] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.022 mmol) in
DCM (2 mL) was added propionyl chloride (3.0 mg, 0.033 mmol) and
TEA (30 .mu.L, 0.22 mmol). The reaction mixture was stirred at
ambient temperature for 1 h, then concentrated in vacuo and
purified by reverse phase chromatography (0-75% ACN/water) to
afford the title compound (5 mg, 52% yield). MS (apci) m/z=441.1
(M+H).
[0767] The compounds in Table G were prepared and purified
according the method used for the synthesis of Example 67,
replacing propionyl chloride with the appropriate acid halide
starting material.
TABLE-US-00014 TABLE G MS (apci) Ex# Structure Chemical Name m/z 68
##STR00273## 4-(6-(4-(cyclo- propanecarbonyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 453.2 (M + H) 69
##STR00274## 4-(6-(4-benzoylpiperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 489.1 (M + H)
Example 70
##STR00275##
[0768]
4-(6-(4-butyrylpiperazin-1-yl)pyridin-3-yl)-6-(1-methyl-H-pyrazol-4-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0769] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (13 mg, 0.028 mmol) in
DCM (2 mL) was added butyryl chloride (4.5 mg, 0.043 mmol) and TEA
(40 .mu.L, 0.28 mmol). The reaction mixture was stirred overnight
at ambient temperature and then quenched with water (5 mL) and
extracted with DCM (3.times.10 mL). The combined organic extracts
were concentrated and purified by reverse phase chromatography
(0-75% ACN/water) to afford the title compound (9 mg, 65% yield).
MS (apci) m/z=455.2 (M+H).
[0770] The compounds in Table H were prepared and purified in a
similar fashion as described for the synthesis of Example 70,
replacing butyryl chloride with the appropriate acid halide
starting material and utilizing the appropriate ACN/water gradient
eluent for reverse phase chromatography.
TABLE-US-00015 TABLE H MS (apci) Ex# Structure Chemical Name m/z 71
##STR00276## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-(pyridin-3-
yl)acetyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 504.1 (M + H) 72 ##STR00277##
6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4- picolinoylpiperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 490.1 (M +
H) 73 ##STR00278## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-
nicotinoylpiperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 490.0 (M + H) 74 ##STR00279##
6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(tetrahydro-2H-
pyran-4-carbonyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 497.1 (M + H)
Example 75
##STR00280##
[0771]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(3-methylbutanoyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0772] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol) in
DCM (2 mL) was added 3-methylbutanoyl chloride (5.9 mg, 0.049 mmol)
and TEA (46 .mu.L, 0.33 mmol). The reaction was stirred overnight
at ambient temperature and then quenched with water (5 mL) and
extracted with DCM in a PS frit. The combined organic extracts were
concentrated in vacuo, and the resulting crude residue was taken up
in MeOH (0.3 mL) and sonicated. The resulting solid was collected
by vacuum filtration, washed with Et.sub.2O (3.times.2 mL) and air
dried to afford the title compound (12 mg, 78% yield). MS (apci)
m/z=469.2 (M+H).
[0773] The compounds in Table I were prepared and purified
according the method used for the synthesis of Example 75,
replacing 3-methylbutanoyl chloride with the appropriate acid
halide starting material.
TABLE-US-00016 TABLE I MS (apci) Ex# Structure Chemical Name m/z 76
##STR00281## 6-(1-methyl-1H-pyrazol-4-
yl)-4-(6-(4-(2-(tetrahydro-2H- pyran-4-yl)acetyl)piperazin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 511.2 (M +
H) 77 ##STR00282## 4-(6-(4-(2- cyclopropylacetyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 467.1 (M + H) 78
##STR00283## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-
phenylacetyl)piperazin-1- yl)pyridin-3-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 503.2 (M + H)
Example 79
##STR00284##
[0774]
4-(6-(4-(3-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0775] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (50 mg, 0.130 mmol) in DMF (4.34 mL)
were added 3-hydroxy-3-methylbutanoic acid (210 .quadrature.L,
0.195 mmol), DMAP (55.6 mg, 0.455 mmol), and EDC-HCl (31.2 mg,
0.163 mmol). After stirring overnight at ambient temperature, the
reaction mixture was diluted with water (20 mL) and extracted with
EtOAc (3.times.20 mL). The combined organic layers were dried over
anhydrous Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The
resulting crude residue was purified by silica chromatography
(0-50%, 20% MeOH/DCM in EtOAc) to provide the title compound (51.1
mg, 80% yield). MS (apci) m/z=485.1 (M+H). .sup.1H NMR (CDCl.sub.3)
.delta. 8.63 (d, 1H), 8.37 (d, 1H), 8.25 (s, 1H), 7.77 (d, 1H),
7.75 (d, 1H), 7.67 (s, 1H), 7.38 (s, 1H), 6.78 (d, 1H), 3.98 (s,
3H), 3.80 (m, 2H), 3.75 (m, 2H), 3.63 (m, 4H), 2.50 (s, 2H), 1.31
(s, 6H).
[0776] The compounds in Table J were prepared and purified
according the method used for the synthesis of Example 79,
replacing 3-hydroxy-3-methylbutanoic acid with the appropriate acid
starting material.
TABLE-US-00017 TABLE J MS (apci) Ex# Structure Chemical Name m/z 80
##STR00285## 4-(6-(4-((1r,4r)-4- hydroxycyclohexanecarbonyl)
piperazin-1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 511.2 (M + H) 81
##STR00286## 4-(6-(4-(1-hydroxycyclopropane-
1-carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 469.2 (M +
H)
Example 82
##STR00287##
[0777]
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0778] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (35 mg, 0.0910 mmol) in DMF (910
.mu.L) was added (R)-2-hydroxy-2-phenylacetic acid (13.9 mg,
0.0.0912 mmol), DMAP (33.4 mg, 0.273 mmol), and EDC-HCl (21.8 mg,
0.114 mmol). After stirring overnight at ambient temperature, the
reaction mixture was diluted with water (5 mL) and then extracted
with EtOAc (3.times.5 mL). The combined organic layers were dried
over anhydrous Na.sub.2SO.sub.4, filtered and concentrated in
vacuo. The crude residue was purified by reverse phase
chromatography (0-60%, ACN/water) to provide the title compound
(32.8 mg, 67% yield). MS (apci) m/z=519.1 (M+H). .sup.1H NMR
(CDCl.sub.3) .delta. 8.61 (d, 1H), 8.31 (d, 1H), 8.22 (s, 1H), 7.76
(m, 1H), 7.71 (m, 1H), 7.65 (m, 1H), 7.35 (m, 6H), 6.68 (d, 1H),
5.25 (s, 1H), 4.00 (m, 1H), 3.88 (s, 3H), 3.80 (m, 1H), 3.62 (m,
2H), 3.37 (m, 3H), 3.00 (s, 1H), 2.86 (m, 1H).
Example 82a
##STR00288##
[0779]
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
hydrochloride
[0780] To a solution of
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-m-
ethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (19
mg, 0.037 mmol) in DCM (5 mL) was added 5 M HCl in iPrOH (29 .mu.L,
0.15 mmol). The mixture was concentrated in vacuo to afford the
title compound (22 mg, quantitative yield). MS (apci) m/z=519.1
(M+H).
Example 83
##STR00289##
[0781]
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0782] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (15 mg, 0.0390 mmol) in DMF (390
.mu.L) was added (R)-2-methoxy-2-phenylacetic acid (9.73 mg, 0.0585
mmol), DMAP (14.3 mg, 0.117 mmol), and EDC-HCl (11.6 mg, 0.0605
mmol). After stirring overnight at ambient temperature, the
reaction mixture was diluted with MeOH and purified directly using
reverse phase chromatography (0-70% ACN/water) to provide the title
compound (9.2 mg, 44% yield). MS (apci) m/z=533.2 (M+H).
Example 84
##STR00290##
[0783]
(S)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0784] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (15 mg, 0.0390 mmol) in DMF (390
.mu.L) was added (S)-2-methoxy-2-phenylacetic acid (9.73 mg, 0.0585
mmol), DMAP (14.3 mg, 0.117 mmol), and EDC-HCl (11.6 mg, 0.0605
mmol). After stirring overnight at ambient temperature, the
reaction mixture was diluted with MeOH and then purified directly
using reverse phase chromatography (0-70% ACN/water) to provide the
title compound (4.0 mg, 19.2% yield). MS (apci) m/z=533.0
(M+H).
Example 85
##STR00291##
[0785]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0786] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (25 mg, 0.065 mmol) in DMF (2.2 mL)
was added (R)-2-hydroxy-3-methylbutanoic acid (11.5 mg, 0.098
mmol), DMAP (28 mg, 0.23 mmol), and, finally, EDC-HCl (15.6 mg,
0.081 mmol). After stirring overnight at ambient temperature, the
reaction mixture was diluted with water (15 mL) and then extracted
with EtOAc (3.times.20 mL). The combined organic layers was dried
over anhydrous Na.sub.2SO.sub.4, filtered, concentrated and
purified by silica chromatography (0-50%, 20% MeOH/DCM in EtOAc) to
provide the title compound (7.7 mg, 24.2% yield). MS (apci)
m/z=485.2 (M+H).
Example 85a
##STR00292##
[0787]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
hydrochloride
[0788] To a solution of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (17
mg, 0.035 mmol) in DCM (2 mL) was added 5 M HCl in iPrOH (21 .mu.L,
0.11 mmol). The mixture was concentrated in vacuo and dried on high
vacuum to afford the title compound (18 mg, 98% yield). MS (apci)
m/z=485.2 (M+H).
Example 86
##STR00293##
[0789]
(R)-4-(6-(4-(2-methoxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0790] NaH (1.7 mg, 0.041 mmol) was added to a solution of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (10
mg, 0.021 mmol) in THF (1 mL) and the reaction mixture was stirred
at ambient temperature for 20 min. MeI (41 .mu.L, 0.041 mmol) was
added and the reaction was stirred at ambient temperature for 1 h
and then quenched with water (1 mL). The resulting mixture was
extracted with DCM (3.times.5 mL). The combined organic extracts
were concentrated and purified by reverse phase chromatography
(0-70% ACN/water) to provide the title compound (5.5 mg, 53%
yield). MS (apci) m/z=499.1 (M+H).
Example 87
##STR00294##
[0791]
4-(6-(4-((cyclopropylmethyl)sulfonyl)piperazin-1-yl)pyridin-3-yl)-6-
-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0792] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.0219 mmol)
in DCM (2 mL) was added cyclopropylmethanesulfonyl chloride (4.4
mg, 0.028 mmol) followed by TEA (30 .mu.L, 0.22 mmol). The reaction
mixture was stirred overnight at ambient temperature and then
quenched with water (1 mL) and extracted with DCM (3.times.5 mL) in
a PS frit. The combined DCM extracts were concentrated and purified
by reverse phase chromatography (0-70% ACN/water) to provide the
title compound (10.1 mg, 87% yield). MS (apci) m/z=503.1 (M+H).
[0793] The compounds in Table K were prepared according the method
used for the synthesis of Example 87, replacing
cyclopropylmethanesulfonyl chloride with the appropriate sulfonyl
chloride starting material, and utilizing the appropriate ACN/water
gradient eluent for reverse phase chromatography purifications.
TABLE-US-00018 TABLE K MS (apci) Ex# Structure Chemical Name m/z 88
##STR00295## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-
(methylsulfonyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 463.1 (M + H) 89
##STR00296## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-
(neopentylsulfonyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 519.1 (M + H) 90
##STR00297## 4-(6-(4- (isobutylsulfonyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.1 (M + H) 91
##STR00298## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((tetrahydro-2H-
pyran-4- yl)sulfonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 533.1 (M + H)
Example 92
##STR00299##
[0794]
4-(6-(4-(4-hydroxypiperidine-1-carbonyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0795] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol)
and DIEA (34 .mu.L, 0.20 mmol) in DriSolv.RTM. DCM (164 .mu.L) was
added dropwise to a 0 OC solution of triphosgene (4.9 mg, 0.016
mmol) in DriSolv.RTM. DCM (164 .mu.L). After stirring the reaction
mixture for 1 hour at 0.degree. C., piperidin-4-ol (3.3 mg, 0.033
mmol) was added, and the reaction was stirred at ambient
temperature overnight. The reaction mixture was diluted with EtOAc
(0.5 mL), vacuum filtered, and the solids were rinsed with EtOAc
(3.times.0.5 mL) to provide the title compound as a white solid (16
mg, 93% yield). MS (apci) m/z=512.2 (M+H).
Example 93
##STR00300##
[0796]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(piperidine-1-carbonyl)piperaz-
in-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0797] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol)
and DIEA (34 .mu.L, 0.20 mmol) in DriSolv.RTM. DCM (328 .mu.L+100
.mu.L rinse) was added dropwise to a 0 OC solution of triphosgene
(4.9 mg, 0.016 mmol) in DriSolv.RTM. DCM (328 .mu.L). After
stirring for 1 hour at 0.degree. C., piperidine (4.9 .mu.L, 0.049
mmol) was added and the reaction mixture was stirred at ambient
temperature for 3 h. The reaction mixture was directly purified by
reverse phase chromatography (5-80% ACN/water) to yield a solid
that contained mostly desired product, which was triturated with
MTBE (2 mL) to provide the title compound (7.0 mg, 43% yield). MS
(apci) m/z=496.1 (M+H).
Example 94
##STR00301##
[0798]
4-(6-(4-(3,3-difluoropiperidine-1-carbonyl)piperazin-1-yl)pyridin-3-
-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0799] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol)
and DIEA (34 .mu.L, 0.20 mmol) in DriSolv.RTM. DCM (428 .mu.L) was
added dropwise to a 0 OC solution of triphosgene (4.9 mg, 0.016
mmol) in DriSolv.RTM. DCM (328 .mu.L). After the mixture was
stirred for 1 h at 0.degree. C., 3,3-difluoropiperidine
hydrochloride (7.8 mg, 0.049 mmol) was added and the reaction
mixture was stirred at ambient temperature for 3 h. The reaction
mixture was then directly purified by reverse phase chromatography
(5-80% ACN/water) to yield a solid that contained mostly desired
product, which was triturated with MTBE (2 mL) to provide the title
compound (2.2 mg, 13% yield). MS (apci) m/z=532.1 (M+H). .sup.19F
NMR (CDCl.sub.3) .delta.-102.6.
Example 95
##STR00302##
[0800]
4-(6-(4-(7-azabicyclo[2.2.1]heptane-7-carbonyl)piperazin-1-yl)pyrid-
in-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitril-
e
[0801] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol)
and DIEA (46 .mu.L, 0.26 mmol) in DriSolv.RTM. DCM (164 .mu.L) was
added dropwise to a 0 OC solution of triphosgene (4.9 mg, 0.016
mmol) in DriSolv.RTM. DCM (164 .mu.L) and stirred for 4 h, followed
by addition of 7-azabicyclo[2.2.1]heptane hydrochloride (4.4 mg,
0.033 mmol) in one portion. The reaction mixture was warmed to
ambient temperature and stirred for 3 h. Additional
7-azabicyclo[2.2.1]heptane hydrochloride (4.4 mg, 0.033 mmol) was
added and the reaction mixture was stirred for an additional 2 h to
reach completion as shown by LCMS. The reaction mixture was then
dissolved in minimal amount of warm DMSO and directly purified by
reverse-phase chromatography (C18, 5-60% ACN/water) to provide the
title compound (4.5 mg, 26% yield). MS (apci) m/z=508.1 (M+H).
Example 96
##STR00303##
[0802]
(R)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-(1-hydroxybutan-2-yl)piperazine-1-carboxamide
[0803] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (25 mg, 0.0650 mmol) and DIEA (68.0
.mu.L, 0.390 mmol) in DriSolv.RTM. DCM (325 .mu.L) was added
dropwise to a 0 OC solution of triphosgene (9.65 mg, 0.0325 mmol)
in DriSolv.RTM. DCM (325 .mu.L). After stirring this reaction
mixture for 1.5 h at 0.degree. C., (R)-2-aminobutan-1-ol (6.96 mg,
0.0780 mmol) was added and the reaction was stirred at ambient
temperature overnight. The reaction mixture was then diluted with
DMSO (0.5 mL), warmed (to solubilize particulate matter),
concentrated in vacuo to 1/2 the original volume and purified by
reverse phase chromatography (5-50% ACN/water) to provide the title
compound (11.3 mg, 34% yield). MS (apci) m/z=500.1 (M+H).
Example 97
##STR00304##
[0804]
(S)-4-(6-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyridin-
-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0805] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol)
and DIEA (34 .mu.L, 0.20) mmol) in DriSolv.RTM. DCM (164 .mu.L) was
added dropwise to a 0 OC solution of triphosgene (4.9 mg, 0.016
mmol) in DriSolv.RTM. DCM (164 .mu.L). After stirring for 30 min at
0.degree. C., (S)-3-methoxypyrrolidine hydrochloride (4.5 mg, 0.033
mmol) was added and the reaction mixture was stirred at ambient
temperature for 48 h. The reaction mixture was then directly
purified by reverse-phase chromatography (C18, 5-50% ACN/water) to
provide the title compound as a white solid (11.7 mg, 68% yield).
MS (apci) m/z=512.2 (M+H). .sup.1H NMR (CDCl.sub.3) .delta. 8.61
(d, 1H), 8.36 (d, 1H), 8.24 (s, 1H), 7.77 (d, 1H), 7.74 (dd, 1H),
7.66 (s, 1H), 7.37 (d, 1H), 6.77 (d, 1H), 3.97 (s, 3H), 3.95 (m,
1H), 3.37-3.72 (m, 12H), 3.33 (s, 3H), 1.98-2.04 (m, 1H), 1.88-1.94
(m, 1H).
[0806] The compounds in Table L were prepared in a similar fashion
as described for the syntheses of Examples 96 and 97, replacing
(R)-2-aminobutan-1-ol or (S)-3-methoxypyrrolidine hydrochloride
with the appropriate amine starting material.
TABLE-US-00019 TABLE L MS (apci) Ex# Structure Chemical Name m/z 98
##STR00305## 4-(5-(3-cyano-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-yl)-
N,N-diethylpiperazine-1- carboxamide 484.1 (M + H) 99 ##STR00306##
(R)-4-(6-(4-(3- hydroxypyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 498.2 (M + H) 100 ##STR00307##
(S)-4-(6-(4-(3- hydroxypyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 498.2 (M + H) 101 ##STR00308##
4-(6-(4-(3,3- difluoropyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 518.1 (M + H) 102 ##STR00309##
(S)-4-(6-(4-(3- fluoropyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 500.1 (M + H) 103 ##STR00310##
(R)-4-(6-(4-(3- fluoropyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 500.1 (M + H) 104 ##STR00311##
(R)-4-(6-(4-(3- methoxypyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 512.1 (M + H) 105 ##STR00312##
(S)-4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2-yl)-N- (tetrahydrofuran-3-
yl)piperazine-1-carboxamide 498.1 (M + H) 106 ##STR00313##
(R)-4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2-yl)-N- (tetrahydrofuran-3-
yl)piperazine-1-carboxamide 498.2 (M + H) 107 ##STR00314##
(R)-4-(6-(4-(3- isopropoxypyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 540.2 (M + H) 108 ##STR00315##
(S)-4-(6-(4-(3- isopropoxypyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 540.2 (M + H) 109 ##STR00316##
4-(5-(3-cyano-6-(1-methyl-1H- pyrazol-4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2-yl)-N- methyl-N-phenylpiperazine-1-
carboxamide 518.2 (M + H) 110 ##STR00317## (R)-4-(6-(4-(2-
(methoxymethyl)pyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 526.2 (M + H) 111 ##STR00318##
(S)-4-(6-(4-(2- (methoxymethyl)pyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 526.2 (M + H) 112 ##STR00319##
(S)-4-(6-(4-(2-cyanopyrrolidine- 1-carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl- 1H-pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 507.1 (M + H) 113 ##STR00320##
(S)-6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-
(trifluoromethyl)pyrrolidine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 550.1 (M +
H) 114 ##STR00321## 4-(6-(4-(4-fluoropiperidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 514.1 (M +
H) 115 ##STR00322## 4-(6-(4-(4,4-difluoropiperidine-
1-carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 532.2 (M +
H) 116 ##STR00323## 4-(6-(4-(3-fluoropiperidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 514.1 (M +
H) 117 ##STR00324## 4-(6-(4-(5-azaspiro[2.4]heptane-
5-carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 508.1 (M +
H) 118 ##STR00325## 4-(6-(4-(3,3- dimethylpyrrolidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 510.2 (M +
H) 119 ##STR00326## 6-(1-methyl-1H-pyrazol-4-yl)-
4-(6-(4-(morpholine-4- carbonyl)piperazin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 498.1 (M +
H) 120 ##STR00327## 6-(1-methyl-1H-pyrazol-4-yl)-
4-(6-(4-(4-methylpiperazine-1- carbonyl)piperazin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 511.2 (M +
H) 121 ##STR00328## 4-(5-(3-cayno-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-yl)-N-
(tetrahydro-2H-pyran-4- yl)piperazine-1-carboxamide 512.2 (M + H)
122 ##STR00329## (S)-4-(5-(3-cyano-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-yl)-N-
(1-hydroxybutan-2- yl)piperazine-1-carboxamide 500.1 (M + H) 123
##STR00330## 4-(6-(4-(hexahydro-1H- furo[3,4-c]pyrrole-5-
carobnyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 524.2 (M +
H) 124 ##STR00331## 4-(6-(4-(2,2- dimethylpyrrolidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1-methyl-
1H-pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 510.1 (M +
H)
Example 125
##STR00332##
[0807]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrrolidine-1-carbonyl)pipera-
zin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0808] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (100 mg, 0.260 mmol) and DIEA (136
.mu.L, 0.780 mmol) in DCM (1.30 mL) at ambient temperature was
treated with pyrrolidine-1-carbonyl chloride (52 mg, 0.39 mmol).
The suspension was stirred overnight at ambient temperature and
concentrated in vacuo to remove the bulk of the DCM and then
diluted with hot DMSO (1 mL). The resulting solution was directly
purified by reverse phase chromatography (5-60% ACN/water) to
provide the title compound (66.4 mg, 53% yield). MS (apci)
m/z=482.1 (M+H). .sup.1H NMR (CDCl.sub.3) .delta. 8.61 (d, 1H),
8.35 (d, 1H), 8.24 (s, 1H), 7.77 (s, 1H), 7.74 (dd, 1H), 7.66 (s,
1H), 7.37 (d, 1H), 6.76 (d, 1H), 3.97 (s, 3H), 3.65-3.68 (m, 4H),
3.38-3.44 (m, 8H), 1.82-1.86 (m, 4H).
Example 125a
##STR00333##
[0809]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrrolidine-1-carbonyl)pipera-
zin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
hydrochloride
[0810] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrrolidine-1-carbonyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example
125, 50 mg, 0.10 mmol) in DCM (5 mL) was added 5 M HCl in iPrOH (29
.mu.L, 0.15 mmol). After 30 min, the mixture was concentrated in
vacuo to afford the title compound as a white solid (55 mg,
quantitative yield). MS (apci) m/z=482.0 (M+H).
Example 126
##STR00334##
[0811]
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-isopropylpiperazine-1-carboxamide
[0812] To a mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (15 mg, 0.039 mmol) and DIEA (34
.mu.L, 0.20 mmol) in DCM (195 .mu.L) was added 2-isocyanatopropane
(3.3 mg, 0.039 mmol) in one portion at ambient temperature. The
resulting mixture was stirred overnight and then diluted with EtOAc
(0.5 mL). The resulting suspension was vacuum filtered and
successively rinsed with EtOAc (2 mL) and MTBE (1 mL). The isolated
solids were taken up in DMSO and purified by reverse phase
chromatography (5-60% ACN/water) to afford the title compound (7.9
mg, 43% yield). MS (apci) m/z=470.2. .sup.1H NMR (CDCl.sub.3)
.delta. 8.62 (d, 1H), 8.36 (d, 1H), 8.24 (s, 1H), 7.77 (s, 1H),
7.74 (dd, 1H), 7.66 (s, 1H), 7.37 (d, 1H), 6.75 (d, 1H), 4.21 (d,
1H), 4.00 (m, 1H), 3.97 (s, 3H), 3.68-3.71 (m, 4H), 3.50-3.53 (m,
4H), 1.18 (m, 6H).
Example 127
##STR00335##
[0813]
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-phenylpiperazine-1-carboxamide
[0814] To a suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (16 mg, 0.035 mmol)
and DIEA (30 .mu.L, 0.17 mmol) in DCM (175 .mu.L) was added
isocyanatobenzene (4.6 mg, 0.038 mmol). The resulting mixture was
stirred at ambient temperature for 4 h and then diluted with EtOAc
(0.5 mL), vacuum filtered and rinsed with EtOAc (2 mL) to afford
the title compound (18 mg, 100% yield). MS (apci) m/z=504.1
(M+H).
[0815] The compounds in Table M were prepared according the method
used for the synthesis of Example 127, replacing isocyanatobenzene
with the appropriate isocyanate starting material.
TABLE-US-00020 TABLE M MS (apci) Ex# Structure Chemical Name m/z
128 ##STR00336## N-(tert-butyl)-4-(5-(3- cyano-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-
yl)piperazine-1- carboxamide 484.1 (M + H) 129 ##STR00337##
N-benzyl-4-(5-(3-cyano-6- (1-methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin-4- yl)pyridin-2-yl)piperazine-
1-carboxamide 518.1 (M + H)
Example 130
##STR00338##
[0816]
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-(2-methoxyethyl)-N-methylpiperazine-1-carboxamide
2,2,2-trifluoroacetate
[0817] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (30 mg 0.066 mmol) in
DMF (1.0 mL) was added (4-nitrophenyl) carbonochloridate (18.88 mg,
0.094 mmol), DMAP (1.91 mg, 0.016 mmol) and DIEA (83 .quadrature.L,
0.47 mmol). The mixture was stirred at ambient temperature for 12
h, and then 2-methoxy-N-methyl-ethanamine (7.65 mg, 0.086 mmol) was
added in one portion. The reaction mixture was stirred at
45.degree. C. for 12 h and then directly purified by reverse-phase
preparative HPLC (10 to 80% acetonitrile/water with 0.1 v/v % TFA)
to give the title compound (10 mg, 25% yield). MS (ES-API Pos)
m/z=500.4 (M+H), 522.3 (M+Na).
[0818] The compounds in Table N were prepared according the method
described for the synthesis of Example 130, replacing
2-methoxy-N-methyl-ethanamine with the appropriate amine starting
material. All compounds were purified similarly by reverse-phase
preparative HPLC (10 to 80% acetonitrile/water with 0.1 v/v % TFA
or 0.04 v/v % NH.sub.4OH) to yield the title compound as TFA salt
unless otherwise stated.
TABLE-US-00021 TABLE N MS (apci) Ex# Structure Chemical Name m/z
131 ##STR00339## 4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N-
cyclopropylpiperazine-1- carboxamide 2,2,2- trifluoroacetate 468.2
(M + H) 132 ##STR00340## 4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N,N-
dimethylpiperazine-1- carboxamide 456.2 (M + H) 133 ##STR00341##
4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridin-
4-yl)pyridin-2-yl)-N- isobutylpiperazine-1- carboxamide 484.2 (M +
H) 134 ##STR00342## 4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N- ethylpiperazine-1-
carboxamide 456.2 (M + H) 135 ##STR00343##
4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridin-
4-yl)pyridin-2-yl)-N-(2- methoxyethyl)piperazine- 1-carboxamide
486.2 (M + H) 136 ##STR00344## 4-(5-(3-cyano-6-(1-methyl-
1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridin-
4-yl)pyridin-2-yl)-N-ethyl- N-methylpiperazine-1- carboxamide 470.2
(M + H)
Example 137
##STR00345##
[0819]
N-(tert-butyl)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1-
,5-a]pyridin-4-yl)pyridin-2-yl)piperazine-1-sulfonamide
[0820] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.022 mmol) in
DCM (2 mL) was added tert-butylsulfamoyl chloride (4.5 mg, 0.026
mmol) followed by TEA (30 .mu.L, 0.22 mmol). The mixture was
stirred overnight at ambient temperature and then quenched with
water and extracted with DCM in a PS frit. The combined DCM
extracts were concentrated and purified by reverse phase
chromatography (0-80% ACN/water) to provide the title compound (2.6
mg, 23% yield). MS (apci) m/z=520.2 (M+H).
Example 138
##STR00346##
[0821]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrrolidin-1-ylsulfonyl)piper-
azin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0822] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol) in
DCM (2 mL) was added pyrrolidine-1-sulfonyl chloride (5.6 mg, 0.033
mmol) followed by TEA (46 .mu.L, 0.33 mmol). The mixture was
stirred overnight at ambient temperature and then quenched with
water and extracted with DCM in a PS frit. The combined DCM
extracts were concentrated and purified by reverse phase
chromatography (0-80% ACN/water) to provide the title compound (13
mg, 77% yield). MS (apci) m/z=518.1 (M+H).
Example 139
##STR00347##
[0823]
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0824] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.0328 mmol)
in DMF (0.2 mL) and TEA (22.9 .mu.L, 0.164 mmol) was treated with
(bromomethyl)benzene (11.2 mg, 0.0656 mmol). The reaction mixture
was stirred at ambient temperature for 1 h and then directly
purified by reverse phase chromatography (0-70% ACN/water) to
afford the title compound (12.3 mg, 79% yield). MS (apci) m/z=475.1
(M+H).
Example 140
##STR00348##
[0825]
4-(6-(4-(4-chlorophenethyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-
-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0826] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (20 mg, 0.044 mmol),
1-(2-bromoethyl)-4-chlorobenzene (12 mg, 0.052 mmol) and
N-ethyl-N-isopropylpropan-2-amine (39 .mu.L, 0.22 mmol) in DMA (219
.mu.L) was heated at 65.degree. C. overnight, then at 100.degree.
C. for additional 2 d to reach completion as indicated by LCMS. The
reaction mixture was directly purified by reverse phase
chromatography (0-75% ACN/water) to yield the title compound (4.5
mg, 19% yield). MS (apci) m/z=523.0 (M+H).
Example 141
##STR00349##
[0827]
4-(6-(4-formylpiperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0828] The title compound was isolated as a side product from the
chromatographic purification process in Example 140 as a white
solid (1.8 mg, 9.7% yield). MS (apci) m/z=413.1 (M+H).
Example 142
##STR00350##
[0829]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(1-methyl-2-oxopyrrolidin-3-yl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0830] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (25 mg, 0.065 mmol) and
3-bromo-1-methylpyrrolidin-2-one (23 mg, 0.13 mmol) in DMF (1.3 mL)
was added Cs.sub.2CO.sub.3 (42 mg, 0.13 mmol). The reaction mixture
was heated to 80.degree. C. and stirred overnight. After cooling to
ambient temperature and diluting with water (10 mL), the reaction
pH was adjusted to 8 with 1 M HCl.sub.(aq) and subsequently
extracted with EtOAc (3.times.15 mL). The combined organic extracts
were washed with brine (15 mL), dried (Na.sub.2SO.sub.4), filtered,
concentrated and purified by silica chromatography (0-10% MeOH/DCM)
to afford the title compound (2.8 mg, 8.8% yield). MS (apci)
m/z=482.1 (M+H).
Example 143
##STR00351##
[0831]
2-(4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperazin-1-yl)-N,N-dimethylacetamide
2,2,2-trifluoroacetate
[0832] To a mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (30 mg, 0.066 mmol) in
ACN (1 mL) as ambient temperature were added K.sub.2CO.sub.3 (18
mg, 0.13 mmol) and 2-chloro-N,N-dimethylacetamide (9.6 mg, 0.079
mmol). The reaction mixture was stirred at ambient temperature for
12 h and purified by reverse-phase preparative HPLC (10 to 80%
acetonitrile/water with 0.1 v/v % TFA) to give the title compound
(23 mg, 60% yield). MS (ES-API Pos) m/z=470.3 (M+H).
[0833] The compounds in Table O were prepared according the method
described for the synthesis of Example 143, replacing
2-chloro-N,N-dimethylacetamide with the appropriate alkyl halide.
All compounds were purified similarly by reverse-phase preparative
HPLC (10 to 80% acetonitrile/water with 0.1 v/v % TFA or 0.04 v/v %
NH.sub.4OH) to yield the title compound as TFA salt unless
otherwise stated.
TABLE-US-00022 TABLE O MS (apci) Ex# Structure Chemical Name m/z
144 ##STR00352## 2-(4-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin-4- yl)pyridin-2-yl)piperazin-1-
yl)-N-isopropylacetamide 2,2,2-trifluoroacetate 484.2 (M + H) 145
##STR00353## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-oxo-2-
(pyrrolidin-1- yl)ethyl)piperazin-1- yl)pyridin-3-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 496.2 (M + H) 146
##STR00354## 3-(4-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin-4- yl)pyridin-2-yl)piperazin-1- yl)-N,N-
dimethylpropanamide 2,2,2- trifluoroacetate 484.2 (M + H)
Example 147
##STR00355##
[0834]
4-(6-(4-((1R,2R)-1-hydroxy-1-phenylpropan-2-yl)piperazin-1-yl)pyrid-
in-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitril-
e
[0835] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (25 mg, 0.0650 mmol) and
(2R,3R)-2-methyl-3-phenyloxirane (8.73 mg, 0.0650 mmol) in methanol
(325 .mu.L) was stirred in a sealed vial and heated at 75.degree.
C. for 40 h. After cooling to ambient temperature, the reaction
mixture was directly purified by reverse phase chromatography (C18,
5-50% ACN/water) to afford the title compound (17.0 mg, 50% yield).
MS (apci) m/z=519.2 (M+H).
[0836] The compounds in Table P were prepared by a similar fashion
as describe for the synthesis of Example 147, replacing
(2R,3R)-2-methyl-3-phenyloxirane with the appropriate oxirane
starting material.
TABLE-US-00023 TABLE P MS (apci) Ex# Structure Chemical Name m/z
148 ##STR00356## 4-(6-(4-(2-hydroxy-3,3- dimethylbutyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 485.1 (M + H) 149
##STR00357## 4-(6-(4-((1S,2S)-1- hydroxy-1-phenylpropan-2-
yl)piperazin-1-yl)pyridin-3- yl)-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 519.2 (M + H)
150 ##STR00358## (S)-4-(6-(4-(2- hydroxybutyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 457.2 (M + H) 151
##STR00359## (R)-4-(6-(4-(2-hydroxy-3- methoxypropyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 473.1 (M + H) 152
##STR00360## 4-(6-(4-(2-(4- chlorophenyl)-2-
hydroxyethyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
539.1 (M + H) 153 ##STR00361## (R)-4-(6-(4-(2-(3- chlorophenyl)-2-
hydroxyethyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
539.1 (M + H) 154 ##STR00362## 4-(6-(4-(2-(2,6- difluorophenyl)-2-
hydroxyethyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
541.1 (M + H)
Example 155
##STR00363##
[0837]
4-(6-(4-((1r,2r)-2-hydroxycyclohexyl)piperazin-1-yl)pyridin-3-yl)-6-
-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0838] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (25 mg, 0.065 mmol) and
7-oxabicyclo[4.1.0]heptane (6.4 mg, 0.065 mmol) in methanol (325
.mu.L) was stirred in a sealed vial at 75.degree. C. for 40 h.
After cooling to ambient temperature, the reaction mixture was
diluted with cold MeOH (325 .mu.L), vacuum filtered, and rinsed
sequentially with cold MeOH and Et.sub.2O (1 mL each) to afford the
title compound (19.9 mg, 62% yield). MS (apci) m/z=483.2 (M+H).
[0839] The compounds in Table Q were prepared according the method
used for the synthesis of Example 155, replacing
7-oxabicyclo[4.1.0]heptane with the appropriate oxirane starting
material. All compounds were purified similarly to the method
described therein, utilizing either cold MeOH alone as the solvent
for rinsing the solid product or cold MeOH and Et.sub.2O.
TABLE-US-00024 TABLE Q MS (apci) Ex# Structure Chemical Name m/z
156 ##STR00364## 4-(6-(4-(2-hydroxy-2- methylpropyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 457.2 (M + H) 157
##STR00365## (S)-4-(6-(4-(2- hydroxypropyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 443.1 (M + H) 158
##STR00366## (R)-4-(6-(4-(2- hydroxypropyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 443.1 (M + H) 159
##STR00367## 4-(6-(4-((3r,4s)-4- hydroxytetrahydrofuran-3-
yl)piperazin-1-yl)pyridin- 3-yl)-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 471.1 (M + H)
160 ##STR00368## 4-(6-(4-(2-hydroxy-3- methylbutyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 471.2 (M + H) 161
##STR00369## (R)-4-(6-(4-(2-hydroxy-2- phenylethyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.1 (M + H) 162
##STR00370## (S)-4-(6-(4-(2-hydroxy-2- phenylethyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.1 (M + H) 163
##STR00371## 4-(6-(4-((1r,2r)-2- hydroxycyclopentyl(pipera-
zin-1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 469.1 (M + H) 164
##STR00372## 4-(6-(4-(2-(4- fluorophenyl)-2-
hydroxyethyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
523.1 (M + H) 165 ##STR00373## rac-4-(6-(4-((2R*,3S*)-3-
hydroxybutan-2- yl)piperazin-1-yl)pyridin- 3-yl)-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 457.1 (M +
H)
Example 166
##STR00374##
[0840] tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate
[0841] A solution of tert-butyl
7-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)-4,7-diaza-
spiro[2.5]octane-4-carboxylate (Intermediate R2; 91 mg, 0.219 mmol)
in dioxane (1.5 mL) was added to
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 62.6 mg, 0.169 mmol).
The resulting mixture was treated with 2 M Na.sub.2CO.sub.3(aq)
(421 .mu.L, 0.843 mmol) and Pd(PPh.sub.3).sub.4 (9.74 mg, 0.00843
mmol). The resulting reaction mixture was purged with nitrogen,
then sealed and stirred at 90.degree. C. overnight. After cooling
to ambient temperature, the reaction mixture was partitioned
between H.sub.2O (10 mL) and DCM (10 mL). After phase-separation
and extracting the aqueous layer with DCM (2.times.10 mL), the
organic layers were combined and concentrated and the residue was
purified by silica chromatography (0-100% EtOAc/hexanes followed by
0-10% MeOH! EtOAc) to afford the title compound contaminated with
Ph.sub.3PO, which was removed by trituration with MTBE to yield the
title product (19.4 mg, 23% yield). MS (apci) m/z=511.2 (M+H).
Example 167
##STR00375##
[0842]
4-(6-(4,7-diazaspiro[2.5]octan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-py-
razol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0843] To a suspension of tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate (18.7 mg, 0.0366
mmol) in EtOH (0.2 mL) was added 5 M HCl in iPrOH (293 .mu.L, 1.46
mmol). The resulting suspension was stirred at ambient temperature
overnight and then filtered. The isolated solids were rinsed with
Et.sub.2O (3 mL) and then dried in vacuo to afford the title
compound (15.5 mg, 88% yield). MS (apci) m/z=411.1 (M+H).
Example 168
##STR00376##
[0844]
4-(6-(4-(3-hydroxy-3-methylbutanoyl)-4,7-diazaspiro[2.5]octan-7-yl)-
pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbon-
itrile
[0845] DIEA (22 .mu.L, 0.12 mmol), 3-hydroxy-3-methylbutanoic acid
(4.9 mg, 0.041 mmol), and HATU (12 mg, 0.031 mmol) were added
sequentially to a solution of
4-(6-(4,7-diazaspiro[2.5]octan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg,
0.021 mmol) in ACN (0.4 mL). The reaction mixture was stirred for 2
d at ambient temperature and then directly purified by reverse
phase chromatography (5-75% ACN/water) to afford the title compound
(10.8 mg, 98% yield). MS (apci) m/z=511.1 (M+H).
Example 169
##STR00377##
[0846]
4-(6-(4-(3,3-dimethylbutanoyl)-4,7-diazaspiro[2.5]octan-7-yl)pyridi-
n-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0847] To a solution of
4-(6-(4,7-diazaspiro[2.5]octan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.0103 mmol) in DCM (0.4 mL) was added DIEA (10.8 .mu.L, 0.0621
mmol) and 3,3-dimethylbutanoyl chloride (2.17 .mu.L, 0.0155 mmol)
and the reaction mixture was stirred at ambient temperature 2 d.
The resulting suspension was vacuum filtered and the filter cake
was rinsed successively with water (1 mL) and Et.sub.2O (2.times.1
mL), then dried in vacuo to afford the title compound (3.2 mg, 61%
yield). MS (apci) m/z=509.2 (M+H).
Example 170
##STR00378##
[0848] (1S,4S)-tert-butyl
5-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate
[0849]
(1S,4S)-tert-butyl5-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-
)pyridin-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate
(Intermediate R3; 48 mg, 0.12 mmol), 2 M Na.sub.2CO.sub.3(aq) (236
.mu.L, 0.47 mmol), and Pd(PPh.sub.3).sub.4 (5.5 mg, 0.0047 mmol)
were added sequentially to a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 35 mg, 0.0943 mmol) in
dioxane (0.4 mL). The resulting reaction mixture was purged with
nitrogen, then sealed and stirred at 90.degree. C. overnight. The
reaction mixture was cooled to ambient temperature and then diluted
with H.sub.2O (5 mL). After vigorous stirring the resulting
suspension was extracted with DCM (2.times.15 mL). The combined
organic extracts were concentrated and purified by silica
chromatography (25-100% EtOAc/hexanes then 0-10% MeOH/EtOAc) to
afford the title compound (12.1 mg, 26% yield). MS (apci) m/z=497.1
(M+H).
Example 171
##STR00379##
[0850]
4-(6-((1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0851] To a suspension of (1S,4S)-tert-butyl
5-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate (11 mg,
0.022 mmol) in EtOH (0.2 mL) was added 5 M HCl in iPrOH (301 .mu.L,
1.5 mmol). The resulting suspension was stirred at ambient
temperature for 4 h. LCMS indicated continued presence of starting
material. Additional 5 M HCl in iPrOH (0.2 mL) was added. The
reaction was stirred overnight and then filtered. The filter cake
was rinsed with Et.sub.2O (3 mL) and dried in vacuo to afford the
title compound (7.6 mg, 73% yield). MS (apci) m/z=397.1 (M+H).
Example 172
##STR00380##
[0852]
4-(6-((1S,4S)-5-(3,3-dimethylbutanoyl)-2,5-diazabicyclo[2.2.1]hepta-
n-2-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-
-carbonitrile
[0853] DIEA (13.4 .mu.L, 0.0767 mmol) and 3,3-dimethylbutanoyl
chloride (2.7 .mu.L, 0.019 mmol) were added sequentially to a
suspension of
4-(6-((1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-6-(1-methy-
l-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride (6 mg, 0.0128 mmol) in DCM (0.4 mL). The resulting
solution was stirred overnight at ambient temperature and then
quenched with MeOH (0.1 mL). The solution was partially
concentrated in vacuo and then purified directly by silica
chromatography (0-10% MeOH/EtOAc) to afford the title compound (5.0
mg, 79% yield). MS (apci) m/z=495.2 (M+H).
Example 173
##STR00381##
[0854] tert-butyl
3-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-3,8-diazabicyclo[3.2.1]octane-8-carboxylate
[0855] To a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate, (Intermediate P5; 41.3 mg, 0.111 mmol)
in dioxane (1 mL) was added tert-butyl
3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)-3,8-diaza-
bicyclo[3.2.1]octane-8-carboxylate (Intermediate R4; 60 mg, 0.144
mmol). The resulting mixture was treated with 2 M
Na.sub.2CO.sub.3(aq) (278 .mu.L, 0.56 mmol), and
Pd(PPh.sub.3).sub.4 (6.42 mg, 0.0056 mmol) and then sparged with
nitrogen, sealed and heated at 90.degree. C. overnight. The
reaction mixture was cooled to ambient temperature and then diluted
with H.sub.2O (10 mL) and filtered. The isolated solids were
dissolved in MTBE. The aqueous phase was washed with DCM (10 mL)
and the combined organic extracts were concentrated in vacuo. The
resulting residue was purified by silica chromatography (25-100%
EtOAc/hexanes) to afford the title compound contaminated with
Ph.sub.3PO, which was removed via trituration with MTBE (3 mL) to
yield the title compound (15.8 mg, 28% yield). MS (apci) m/z=511.1
(M+H).
Example 174
##STR00382##
[0856]
4-(6-(3,8-diazabicyclo[3.2.1]octan-3-yl)pyridin-3-yl)-6-(1-methyl-1-
H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0857] To a suspension of tert-butyl
3-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-3,8-diazabicyclo[3.2.1]octane-8-carboxylate (14.7 mg,
0.0288 mmol) in EtOH (0.2 mL) was added 5 M HCl in iPrOH (305
.mu.L, 1.53 mmol). After stirring the suspension at ambient
temperature for 2 h, additional 5 M HCl in iPrOH (0.3 mL, 1.50
mmol) was added and stirring continued overnight. The solids were
collected by filtration, rinsed with Et.sub.2O (3 mL) and then
dried in vacuo to afford the title compound (10 mg, 72% yield). MS
(apci) m/z=411.1 (M+H).
Example 175
##STR00383##
[0858]
4-(6-(8-(3,3-dimethylbutanoyl)-3,8-diazabicyclo[3.2.1]octan-3-yl)py-
ridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonit-
rile
[0859] To a solution of
4-(6-(3,8-diazabicyclo[3.2.1]octan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(4.5 mg, 0.00931 mmol) in DCM (0.4 mL) was added DIEA (9.7 .mu.L,
0.056 mmol) and 3,3-dimethylbutanoyl chloride (2.0 .mu.L, 0.014
mmol). The reaction mixture was stirred at ambient temperature
overnight. The resulting suspension was vacuum filtered and the
filter cake was rinsed with Et.sub.2O (3.times.1 mL) and then dried
in vacuo to afford the title compound (4.7 mg, 99% yield). MS
(apci) m/z=509.2 (M+H).
Example 176
##STR00384##
[0860] tert-butyl
(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperidin-4-yl)carbamate
[0861] In a pressure tube a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 53.7 mg, 0.145 mmol),
tert-butyl
(1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperidin-
-4-yl)carbamate (Intermediate R8; 70 mg, 0.174 mmol) and
Pd(PPh.sub.3).sub.4 (8.4 mg, 0.0072 mmol) in dioxane (1.2 mL) was
treated with 2 M Na.sub.2CO.sub.3(aq) (362 .mu.L, 0.72 mmol). The
resulting reaction mixture was purged with nitrogen, sealed and
then heated at 90.degree. C. overnight. The reaction mixture was
cooled to ambient temperature and diluted with water (3 mL). The
resulting suspension was vacuum filtered, and the solids were
rinsed with additional water to afford the title compound (57.9 mg,
83% yield). MS (apci) m/z=499.1 (M+H).
Example 177
##STR00385##
[0862]
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4--
yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
[0863] To a suspension of to tert-butyl
(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperidin-4-yl)carbamate (56 mg, 0.112 mmol) in EtOH
(0.2 mL) was added 5 M HCl in iPrOH (449 .mu.L, 2.25 mmol). After
stirring at ambient temperature 3 d the resulting suspension was
vacuum filtered, and the solids were rinsed with Et.sub.2O (3 mL)
and then dried in vacuo to afford the title compound (44.7 mg, 84%
yield). MS (apci) m/z=399.1 (M+H).
Example 178
##STR00386##
[0864]
(R)--N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperidin-4-yl)tetrahydrofuran-2-carboxamide
[0865]
4-(6-(4-Aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4--
yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg,
0.0212 mmol) was treated sequentially with a solution of
(R)-tetrahydrofuran-2-carboxylic acid (4.9 mg, 0.042 mmol) in DMA
(0.4 mL), DIEA (22 .mu.L, 0.13 mmol) and HATU (12.1 mg, 0.032
mmol). The resulting reaction mixture was stirred overnight at
ambient temperature and then directly purified by chromatography
(5-75% ACN/water) to afford the title compound (10.6 mg,
quantitative yield). MS (apci) m/z=497.0 (M+H).
[0866] The compounds in Table R were prepared according the method
used for the synthesis of Example 178, replacing
(R)-tetrahydrofuran-2-carboxylic acid with the appropriate acid
starting material and using either DMA (or DMF) as solvent.
TABLE-US-00025 TABLE R MS (apci) Ex# Structure Chemical Name m/z
179 ##STR00387## N-(1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)piperidin-
4-yl)-2-hydroxy-2- methylpropanamide 485.1 (M + H) 180 ##STR00388##
(S)-N-(1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)piperidin- 4-yl)-2-
hydroxypropanamide 471.1 (M + H) 181 ##STR00389##
(R)-N-(1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)piperidin- 4-yl)-2-
hydroxypropanamide 471.0 (M + H) 182 ##STR00390##
(S)-N-(1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)piperidin-
4-yl)tetrahydrofuran-2- carboxamide 497.1 (M + H)
Example 183
##STR00391##
[0867]
N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)-2-methoxyacetamide
[0868] A solution of
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.021
mmol) in DMA (0.4 mL) was treated with DIEA (15 .mu.L, 0.085 mmol)
and 2-methoxyacetyl chloride (3.5 mg, 0.032 mmol). The resulting
clear solution was stirred overnight at ambient temperature. LCMS
indicated no reaction progress and acid halide degradation to acid
was suspected. The reaction mixture was therefore treated with HATU
(20 mg, 0.0526 mmol). After stirring the reaction mixture for an
additional 2 h at ambient temperature, LCMS indicated complete
consumption of the carbonitrile starting material. The reaction
mixture was directly purified by chromatography (5-75% ACN/water)
to afford the title compound (8.5 mg, 85% yield). MS (apci)
m/z=471.1 (M+H).
Example 184
##STR00392##
[0869]
N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)benzamide
[0870] A solution of
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (8 mg, 0.017
mmol) in DCM (0.3 mL) was treated with DIEA (11.82 .mu.L, 0.068
mmol) and benzoyl chloride (3.9 .mu.L, 0.034 mmol). The resulting
clear solution was stirred 2 d at ambient temperature. The reaction
mixture was vacuum filtered, and the solids were rinse with
Et.sub.2O (3.times.1 mL) and dried in vacuo to afford the title
compound (4.8 mg, 56% yield). MS (apci) m/z=503.1 (M+H).
Example 185
##STR00393##
[0871]
N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)isobutyramide
[0872] A solution of
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (40 mg, 0.085
mmol) in DMA (0.5 mL) was treated with DIEA (59 .mu.L, 0.34 mmol)
and isobutyryl chloride (13.4 .mu.L, 0.13 mmol). The resulting
clear solution was stirred overnight at ambient temperature. The
reaction mixture was directly purified by chromatography (5-80%,
ACN/water) to afford the title compound (26.4 mg, 66% yield). MS
(apci) m/z=469.2 (M+H).
Example 185a
##STR00394##
[0873]
N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)isobutyramide hydrochloride
[0874] A solution of
N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)-
pyridin-2-yl)piperidin-4-yl)isobutyramide (26.4 mg, 0.056 mmol) in
a 4:1 solvent mixture of DCM/MeOH (3 mL) was treated with 5 M HCl
in iPrOH (113 .mu.L, 0.56 mmol). The resulting clear solution was
stirred 10 min at ambient temperature and then concentrated in
vacuo. The residue was diluted with Et.sub.2O (5 mL) and
concentrated in vacuo to afford the title compound (30.3 mg,
quantitative yield). MS (apci) m/z=469.2 (M+H).
Example 186
##STR00395##
[0875]
3-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)-1,1-dimethylurea
[0876] To a suspension of
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.02121
mmol) in DCM (0.2 mL) and DIEA (18 .mu.L, 0.11 mmol) at ambient
temperature was added dimethylcarbamic chloride (4.9 .mu.L, 0.053
mmol). The suspension was stirred overnight at ambient temperature
before treated with additional DIEA (20 .quadrature.L, 0.1148 mmol)
and dimethylcarbamic chloride (10 .quadrature.L, 0.1090 mmol). The
reaction mixture was stirred at ambient temperature for another 4
d, then diluted with ACN and directly purified by reverse phase
chromatography (5-75% ACN/water) to provide the title compound (6.4
mg, 64% yield). MS (apci) m/z=470.2 (M+H).
Example 187
##STR00396##
[0877]
1-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)-3-isopropylurea
[0878] To a suspension of
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.021
mmol) in DCM (0.2 mL) and DIEA (18 .mu.L, 0.11 mmol) was added
2-isocyanatopropane (2.7 mg, 0.032 mmol). The suspension was
stirred at ambient temperature overnight and then vacuum filtered.
The isolated solids were rinsed with Et.sub.2O and dried in vacuo
to afford the title compound (7.3 mg, 71% yield). MS (apci)
m/z=484.2 (M+H).
Example 188
##STR00397##
[0879] Isopropyl
(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperidin-4-yl)carbamate
[0880] To a suspension of
4-(6-(4-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.021
mmol) in DCM (0.2 mL) and DIEA (18 .mu.L, 0.11 mmol) was added
isopropyl carbonochloridate (3.9 mg, 0.032 mmol). The suspension
was stirred at ambient temperature overnight and then vacuum
filtered. The isolated solids were rinsed with Et.sub.2O and dried
in vacuo to afford the title compound (5.7 mg, 55% yield). MS
(apci) m/z=485.2 (M+H).
Example 189
##STR00398##
[0881]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-oxopyrrolidin-1-yl)piperidi-
n-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0882]
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile (Intermediate P6; 13.6 mg, 0.043 mmol) and
1-(piperidin-4-yl)pyrrolidin-2-one (21.6 mg, 0.13 mmol) in DMSO
(0.3 mL) were combined in a microwave vessel. The resulting thick
suspension was subjected to microwave irradiation at 125.degree. C.
for 1 h. The reaction mixture was directly purified by reverse
phase chromatography (5-90% ACN/water). The chromatographic
fractions containing the title compound were combined, concentrated
in vacuo and then triturated with MTBE to provide the title
compound (6.3 mg, 32% yield). MS (apci) m/z=467.1 (M+H).
Example 190
##STR00399##
[0883]
(S)-4-(6-(4-(3-hydroxy-2-oxopyrrolidin-1-yl)piperidin-1-yl)pyridin--
3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0884]
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile (Intermediate P6; 15 mg, 0.047 mmol) and
(S)-3-hydroxy-1-(piperidin-4-yl)pyrrolidin-2-one (26.0 mg, 0.14
mmol) was added DMSO (0.3 mL) were combined in a microwave vessel.
The resulting thick suspension was subjected to microwave
irradiation at 125.degree. C. for 1 h. The reaction mixture was
directly purified by reverse phase chromatography (5-75% ACN/water)
to afford the title compound (12.4 mg, 55% yield). MS (apci)
m/z=483.0 (M+H).
Example 191
##STR00400##
[0885]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-oxooxazolidin-3-yl)piperidi-
n-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0886] A solution of 3-(piperidin-4-yl)oxazolidin-2-one
hydrochloride (29 mg, 0.14 mmol) in MeOH (0.5 mL) was filtered
through a basic resin (Stratospheres MP-HCO3, 100 mg, 0.18 mmol/g)
and concentrated in vacuo. The resulting residue was taken up in
DMSO (0.3 mL) and added to a microwave vessel containing
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 15 mg, 0.047 mmol). The
resulting thick suspension was subjected to microwave irradiation
at 125.degree. C. for 1 h. The reaction mixture was directly
purified by reverse phase chromatography (5-75% ACN/water) to
afford the title compound (9.7 mg, 44% yield). MS (apci) m/z=469.1
(M+H).
Example 192
##STR00401##
[0887] tert-butyl
((1R,3s,5S)-8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
din-4-yl)pyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-yl)carbamate
[0888] In a pressure tube a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 45.4 mg, 0.12 mmol),
tert-butyl ((1R,3s,
5S)-8-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)-8-aza-
bicyclo[3.2.1]octan-3-yl)carbamate (Intermediate R5; 63 mg, 0.15
mmol) and Pd(PPh.sub.3).sub.4 (7.1 mg, 0.0061 mmol) in dioxane (1.2
mL) was treated with 2 M Na.sub.2CO.sub.3(aq) (306 .mu.L, 0.61
mmol). The resulting reaction mixture was sparged with nitrogen,
sealed and heated at 90.degree. C. overnight. The reaction mixture
was cooled to ambient temperature and then diluted with water (13
mL) and extracted with EtOAc (2.times.17 mL). The combined organic
extracts were dried (MgSO.sub.4), filtered, concentrated in vacuo
and purified by reverse phase chromatography (5-95% ACN/water) to
afford the title compound (32.7 mg, 51% yield). MS (apci) m/z=525.2
(M+H).
Example 193
##STR00402##
[0889]
4-(6-((1R,3s,5S)-3-amino-8-azabicyclo[3.2.1]octan-8-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0890] To a suspension of tert-butyl
((1R,3s,5S)-8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
din-4-yl)pyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-yl)carbamate (31
mg, 0.0591 mmol) in EtOH (0.2 mL) was added 5 M HCl in iPrOH (414
.mu.L, 2.07 mmol). After stirring at ambient temperature for 4 h
the reaction appeared complete by LCMS. The suspension was
filtered, and the solids were rinsed with Et.sub.2O (3 mL) and
dried in vacuo to afford the title compound (23.5 mg, 80% yield).
MS (apci) m/z=425.1 (M+H).
Example 194
##STR00403##
[0891] tert-butyl
((1R,3r,5S)-8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
din-4-yl)pyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-yl)carbamate
[0892] In a pressure tube, a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 75 mg, 0.202 mmol),
tert-butyl ((1R,3r, 5S)-8-(5-(4,4,5,5-tetramet
hyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-yl)c-
arbamate (Intermediate R9; 104 mg, 0.242 mmol) and
Pd(PPh.sub.3).sub.4 (11.7 mg, 0.0101 mmol) in dioxane (2 mL) was
treated with 2 M Na.sub.2CO.sub.3(aq) (505 .mu.L, 1.01 mmol). The
resulting reaction mixture was sparged with N.sub.2, sealed and
heated at 90.degree. C. overnight. The reaction mixture was cooled
to ambient temperature and then diluted with water (3 mL) and EtOAc
(5 mL) and stirred. The resulting emulsion was filtered and the
filtrate was diluted with additional water (10 mL) and extracted
with EtOAc (2.times.15 mL). The combined organic extracts were
dried (MgSO.sub.4), filtered, concentrated in vacuo and purified by
reverse phase chromatography (5-95% ACN/water) to afford the title
compound (25.9 mg, 24% yield). MS (apci) m/z=525.1 (M+H).
Example 195
##STR00404##
[0893]
4-(6-((1R,3r,5S)-3-amino-8-azabicyclo[3.2.1]octan-8-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0894] To a suspension of tert-butyl
((1R,3r,5S)-8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
din-4-yl)pyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-yl)carbamate
(24.8 mg, 0.0473 mmol) in EtOH (0.2 mL) was added 5 M HCl in iPrOH
(407 .mu.L, 2.03 mmol). After stirring at ambient temperature
overnight the resulting suspension was filtered, and the solids
were rinsed with Et.sub.2O (3 mL) and dried in vacuo to afford the
title compound (16.8 mg, 71% yield). MS (apci) m/z=425.1 (M+H).
Example 196
##STR00405##
[0895]
4-(6-(4-hydroxypiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0896] In a pressure tube a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 44.9 mg, 0.121 mmol),
1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperidin--
4-ol (Intermediate R6; 81 mg, 0.133 mmol) and Pd(PPh.sub.3).sub.4
(7.0 mg, 0.0061 mmol) in dioxane (1.2 mL) was treated with 2 M
Na.sub.2CO.sub.3(aq) (303 .mu.L, 0.61 mmol). The resulting reaction
mixture was sparged with nitrogen, sealed and heated at 90.degree.
C. overnight. After cooling to ambient temperature the reaction
mixture was diluted with H.sub.2O (3 mL) and EtOAc (5 mL), stirred
for 30 min and vacuum filtered, rinsing the collected solids
successively with water (20 mL) and EtOAc (20 mL). The isolated
solids were purified by reverse phase chromatography (5-75%
ACN/water) to afford the title compound (14.0 mg, 29% yield). MS
(apci) m/z=400.1 (M+H).
Example 197
##STR00406##
[0897]
4-(6-(4-isobutoxypiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazo-
l-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0898]
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile (Intermediate P6; 15 mg, 0.0471 mmol) and
4-isobutoxypiperidine (22.2 mg, 0.141 mmol) in DMSO (0.2 mL) were
combined in a microwave vessel and subjected to microwave
irradiation at 125.degree. C. for 1 h. The reaction mixture was
directly purified by reverse phase chromatography (5-75% ACN/water)
to provide the title compound (17.1 mg, 80% yield). MS (apci)
m/z=456.1 (M+H).
Example 198
##STR00407##
[0899]
4-(6-(4-methoxypiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0900]
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile (Intermediate P6; 17 mg, 0.0534 mmol) and
4-methoxypiperidine (18.5 mg, 0.160 mmol) in DMSO (0.2 mL) were
combined in a microwave vessel and subjected to microwave
irradiation at 125.degree. C. for 30 min. The reaction mixture was
directly purified by reverse phase chromatography (5-80%
ACN/water). The chromatographic fractions containing the title
compound were combined, concentrated in vacuo, and triturated with
MTBE (1 mL) to yield the title product (12.4 mg, 56% yield). MS
(apci) m/z=414.1 (M+H).
Example 199
##STR00408##
[0901]
4-(6-((1R,3r,5S)-3-hydroxy-8-azabicyclo[3.2.1]octan-8-yl)pyridin-3--
yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0902] In a pressure tube, a solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 35 mg, 0.094 mmol),
(1R,3r,5S)-8-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl-
)-8-azabicyclo[3.2.1]octan-3-ol (Intermediate R7; 33 mg, 0.100
mmol) and Pd(PPh.sub.3).sub.4 (5.4 mg, 0.0047 mmol) in dioxane (0.7
mL) was treated with 2 M Na.sub.2CO.sub.3(aq) (236 .mu.L, 0.47
mmol). The resulting reaction mixture was sparged with nitrogen,
sealed and heated at 90.degree. C. overnight. The reaction mixture
was cooled to ambient temperature, diluted with H.sub.2O (7 mL) and
extracted with DCM (2.times.15 mL). The combined organic extracts
were concentrated and purified by silica chromatography (0-10%
MeOH/EtOAc) to afford the title compound (3.5 mg, 9% yield). MS
(apci) m/z=426.1 (M+H).
Example 200
##STR00409##
[0903]
4-(6-((1R,3r,5S)-3-methoxy-8-azabicyclo[3.2.1]octan-8-yl)pyridin-3--
yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0904] A solution of (1R,3r,5S)-3-methoxy-8-azabicyclo[3.2.1]octane
hydrochloride (25 mg, 0.141 mmol) in MeOH (0.5 mL) was filtered
through a basic resin (Stratospheres MP-HCO3, 100 mg, 1.8 mmol/g)
and the filtrate was concentrated in vacuo. The residue was taken
up in DMSO (0.3 mL) and added to a microwave vessel containing
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 15 mg, 0.047 mmol). The
resulting thick suspension was subjected to microwave irradiation
at 125.degree. C. for 2 h. The reaction mixture was directly
purified by reverse phase chromatography (5-90% ACN/water) to
provide the title compound (10.7 mg, 52% yield). MS (apci)
m/z=440.1 (M+H).
Example 201
##STR00410##
[0905] tert-butyl
(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)-4-methylpiperidin-4-yl)carbamate
[0906] In a microwave vessel,
4-(6-fluoropyridin-3-yl)-6-(1-methyl-H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
ne-3-carbonitrile (Intermediate P6; 30 mg, 0.094 mmol) was treated
with a solution of tert-butyl (4-methylpiperidin-4-yl)carbamate (61
mg, 0.28 mmol) in DMSO (0.4 mL). The resulting thick suspension was
subjected to microwave irradiation at 125.degree. C. for 1 h. The
reaction mixture was directly purified by reverse phase
chromatography (5-90% ACN/water) to afford the title compound (41
mg, 85% yield). MS (apci) m/z=513.1 (M+H).
Example 202
##STR00411##
[0907]
4-(6-(4-amino-4-methylpiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-p-
yrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0908] To a suspension of tert-butyl
(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)-4-methylpiperidin-4-yl)carbamate (40 mg, 0.0780 mmol)
in EtOH (1 mL) was added 5 M HCl in iPrOH (2 mL, 10 mmol). After
stirring at ambient temperature overnight the resulting suspension
was filtered, and the solids were rinsed with Et.sub.2O (3 mL) and
dried in vacuo to afford the title compound (29.8 mg, 79% yield).
MS (apci) m/z=413.1 (M+H).
Example 203
##STR00412##
[0909]
N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)isobutyramide
[0910] A solution of
4-(6-(4-amino-4-methylpiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-
-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (8 mg,
0.016 mmol) in DMA (0.2 mL) was treated with DIEA (11.48 .mu.L,
0.066 mmol) and isobutyryl chloride (2.6 .mu.L, 0.025 mmol). The
resulting clear solution was stirred at ambient temperature
overnight. The reaction mixture was diluted with water and the
resulting mixture was directly purified by chromatography (5-80%
ACN/water) to afford the title compound (7.0 mg, 88% yield). MS
(apci) m/z=483.1 (M+H).
Example 204
##STR00413##
[0911] tert-butyl
8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,8-diazaspiro[4.5]decane-2-carboxylate
[0912] In a microwave vessel,
4-(6-fluoropyridin-3-yl)-6-(1-methyl-H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
ne-3-carbonitrile (Intermediate P6; 15 mg, 0.047 mmol) and
tert-butyl 2,8-diazaspiro[4.5]decane-2-carboxylate (34.0 mg, 0.14
mmol) were suspended in DMSO (0.4 mL). The resulting thick
suspension was subjected to microwave irradiation at 125.degree. C.
for 1 h. The reaction mixture was directly purified by reverse
phase chromatography (5-75% ACN/water) to afford the title compound
(17.0 mg, 67% yield). MS (apci) m/z=539.2 (M+H).
Example 205
##STR00414##
[0913]
4-(6-(2,8-diazaspiro[4.5]decan-8-yl)pyridin-3-yl)-6-(1-methyl-1H-py-
razol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0914] To a suspension of tert-butyl
8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,8-diazaspiro[4.5]decane-2-carboxylate (16 mg, 0.030
mmol) in EtOH (0.1 mL) and DCM (0.1 mL) was added 5 M HCl in iPrOH
(208 .mu.L, 1.04 mmol). After stirring at ambient temperature for 2
h, the resulting suspension was concentrated in vacuo to afford the
title compound (14.9 mg, 98% yield). MS (apci) m/z=439.1 (M+H).
Example 206
##STR00415##
[0915]
(R)-4-(6-(2-(2-hydroxy-3-methylbutanoyl)-2,8-diazaspiro[4.5]decan-8-
-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-ca-
rbonitrile
[0916] (R)-2-hydroxy-3-methylbutanoic acid (1.7 mg, 0.015 mmol) and
HATU (4.5 mg, 0.012 mmol) were added sequentially to a solution of
4-(6-(2,8-diazaspiro[4.5]decan-8-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.0098 mmol) and DIEA (22 .mu.L, 0.12 mmol) in DMA (0.2 mL). After
stirring at ambient temperature for 45 min, the reaction mixture
was quenched with water (0.2 mL) and directly purified by reverse
phase chromatography (5-80% ACN/water) to afford the title compound
(3.1 mg, 59% yield). MS (apci) m/z=539.2 (M+H).
Example 207
##STR00416##
[0917]
4-(6-(2-isobutyryl-2,8-diazaspiro[4.5]decan-8-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0918] To a solution of
4-(6-(2,8-diazaspiro[4.5]decan-8-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.01 mmol) and DIEA (10.2 .mu.L, 0.058 mmol) in DMA (0.2 mL) was
added isobutyryl chloride (1.5 .mu.L, 0.015 mmol). The reaction
mixture was stirred at ambient temperature for 20 h and then
diluted with water (3 mL) and stirred for another 1 h. The
resulting suspension was vacuum filtered and the filter cake was
rinsed with water and dried in vacuo to afford the title compound
(1.9 mg, 38% yield). MS (apci) m/z=509.2 (M+H).
Example 208
##STR00417##
[0919] tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,7-diazaspiro[4.5]decane-2-carboxylate
[0920] In a microwave vessel,
4-(6-fluoropyridin-3-yl)-6-(1-methyl-H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
ne-3-carbonitrile (Intermediate P6; 15 mg, 0.0471 mmol) and
tert-butyl 2,7-diazaspiro[4.5]decane-2-carboxylate (34.0 mg, 0.141
mmol) were suspended in DMSO (0.2 mL). The resulting thick
suspension was subjected to microwave irradiation at 125.degree. C.
for 1 h. The reaction mixture was directly purified by reverse
phase chromatography (5-90% ACN/water) to afford the title compound
(16.0 mg, 63% yield). MS (apci) m/z=539.2 (M+H).
Example 209
##STR00418##
[0921]
4-(6-(2,7-diazaspiro[4.5]decan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-py-
razol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0922] To a solution of tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,7-diazaspiro[4.5]decane-2-carboxylate (15 mg, 0.028
mmol) in EtOH (0.1 mL) and DCM (0.1 mL) was added 5 M HCl in iPrOH
(195 .mu.L, 0.98 mmol). After stirring at ambient temperature for 2
h the reaction mixture was concentrated in vacuo to afford the
title compound (13.9 mg, 98% yield). MS (apci) m/z=439.1 (M+H).
Example 210
##STR00419##
[0923]
4-(6-(2-((R)-2-hydroxy-3-methylbutanoyl)-2,7-diazaspiro[4.5]decan-7-
-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-ca-
rbonitrile
[0924] (R)-2-hydroxy-3-methylbutanoic acid (1.7 mg, 0.015 mmol) and
HATU (4.5 mg, 0.012 mmol) were added sequentially to a solution of
4-(6-(2,7-diazaspiro[4.5]decan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.0098 mmol) and DIEA (10 .mu.L, 0.059 mmol) in DMA (0.2 mL). After
stirring at ambient temperature for 1 h, additional HATU (4 mg,
0.011 mmol) and (R)-2-hydroxy-3-methylbutanoic acid (2 mg, 0.018
mmol) were added, and the reaction mixture was stirred for an
additional 90 min. The reaction mixture was directly purified by
reverse phase chromatography (5-80% ACN/water) to afford the title
compound (1:1 diastereomeric mixture, 1.11 mg, 21% yield. MS (apci)
m/z=539.2 (M+H)) plus the individual diastereoisomers as listed in
Examples 211 and 212 below.
Example 211
##STR00420##
[0925]
4-(6-((S)-2-((R)-2-hydroxy-3-methylbutanoyl)-2,7-diazaspiro[4.5]dec-
an-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine--
3-carbonitrile
[0926] The diastereomeric mixture prepared in Example 210 was
purified by reverse phase chromatographic separation using 5-80%
ACN/water as the gradient eluent. The higher Rfsingle
diastereomeric isomer was isolated to afford the title compound
(0.25 mg, 4.7% yield). The absolute chiral sense for the spirocycle
was arbitrarily assigned. MS (apci) m/z=539.2 (M+H).
Example 212
##STR00421##
[0927]
4-(6-((R)-2-((R)-2-hydroxy-3-methylbutanoyl)-2,7-diazaspiro[4.5]dec-
an-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine--
3-carbonitrile
[0928] The diastereomeric mixture prepared in Example 210 was
purified by reverse phase chromatographic separation using 5-80%
ACN/water as the gradient eluent. The lower R.sup.f single
diastereomeric isomer was isolated to afford the title compound
(0.52 mg, 9.8% yield). The absolute chiral sense for the spirocycle
was arbitrarily assigned. MS (apci) m/z=539.2 (M+H).
Example 213
##STR00422##
[0929]
4-(6-(2-isobutyryl-2,7-diazaspiro[4.5]decan-7-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0930] To a solution of
4-(6-(2,7-diazaspiro[4.5]decan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.01 mmol) and DIEA (10.2 .mu.L, 0.058 mmol) in DMA (0.2 mL) was
added isobutyryl chloride (1.55 .mu.L, 0.015 mmol). The reaction
mixture was stirred at ambient temperature for 20, then diluted
with water (3 mL) and stirred for 3 h. The reaction mixture was
extracted with DCM, and the combined organic extracts were
concentrated in vacuo then purified by reverse phase chromatography
(5-80% ACN/water) to afford the title compound (4.3 mg, 86% yield).
MS (apci) m/z=509.1 (M+H).
Example 214
##STR00423##
[0931] tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,7-diazaspiro[3.5]nonane-2-carboxylate
[0932]
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile (Intermediate P6; 15 mg, 0.047 mmol) and
tert-butyl 2,7-diazaspiro[3.5]nonane-2-carboxylate (32.0 mg, 0.14
mmol) were suspended in DMSO (0.2 mL) in a microwave vessel. The
resulting thick suspension was subjected to microwave irradiation
at 125.degree. C. for 1 h. The reaction mixture was then directly
purified by reverse phase chromatography (5-75% ACN/water) to
afford the title compound (14.0 mg, 57% yield). MS (apci) m/z=525.2
(M+H). .sup.1H NMR (CDCl.sub.3) .delta. 8.63 (d, 1H), 8.35 (d, 1H),
8.26 (s, 1H), 7.78 (s, 1H), 7.73 (dd, 1H), 7.68 (s, 1H), 7.39 (d,
1H), 6.81 (s, 1H), 3.99 (s, 3H), 3.72 (s, 4H), 3.62 (m, 4H), 1.85
(m, 4H), 1.46 (s, 9H).
Example 215
##STR00424##
[0933]
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-py-
razol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[0934] To a solution of tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,7-diazaspiro[3.5]nonane-2-carboxylate (13 mg, 0.025
mmol) in EtOH (0.1 mL) and DCM (0.1 mL) was added 5 M HCl in iPrOH
(198 .mu.L, 0.99 mmol). After stirring at ambient temperature for 2
h the resulting suspension was diluted with DCM and stirred for an
additional 2 d, then concentrated in vacuo to afford the title
compound (11.0 mg, 89% yield). MS (apci) m/z=425.1 (M+H).
Example 216
##STR00425##
[0935]
(R)-4-(6-(2-(2-hydroxy-3-methylbutanoyl)-2,7-diazaspiro[3.5]nonan-7-
-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-ca-
rbonitrile
[0936] (R)-2-hydroxy-3-methylbutanoic acid (1.8 mg, 0.015 mmol),
then HATU (4.6 mg, 0.012 mmol) were added sequentially to a
solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.010 mmol) and DIEA (11 .mu.L, 0.060 mmol) in DMA (0.2 mL). After
stirring at ambient temperature for 45 min the reaction mixture was
quenched with water (0.2 mL) and directly purified by reverse phase
chromatography (5-80% ACN/water) to afford the title compound (3.7
mg, 70% yield). MS (apci) m/z=525.1 (M+H). .sup.1H NMR (CDCl.sub.3)
.quadrature. 8.64 (d, 1H), 8.36 (d, 1H), 8.26 (s, 1H), 7.79 (s,
1H), 7.75 (dd, 1H), 7.68 (s, 1H), 7.39 (d, 1H), 6.83 (s, 1H), 3.99
(s, 3H), 3.91-3.98 (m, 4H), 3.81 (d, 1H), 3.65 (m, 4H), 3.19 (d,
1H), 1.86-1.93 (m, 5H), 1.05 (d, 3H), 0.88 (d, 3H).
Example 217
##STR00426##
[0937]
4-(6-(2-benzoyl-2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-me-
thyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0938] A solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5.4
mg, 0.011 mmol) in DMA (0.2 mL) was treated with DIEA (11.4 .mu.L,
0.065 mmol) and benzoyl chloride (2.5 .mu.L, 0.022 mmol). The
reaction mixture was stirred at ambient temperature for 1 h and
then quenched with water (0.1 mL) and stirred for 2 d. The reaction
mixture was diluted with water (2 mL) and vacuum filtered. The
isolated solids were rinsed with water and dried in vacuo to afford
the title compound (3.8 mg, 66% yield). MS (apci) m/z=529.2
(M+H).
[0939] The compounds in Table S were prepared according the method
used for the synthesis of Example 217, replacing benzoyl chloride
with the appropriate acid chloride starting material.
TABLE-US-00026 TABLE S MS (apci) Ex# Structure Chemical Name m/z
218 ##STR00427## 6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(2-(2-
phenylacetyl)-2,7- diazaspiro[3.5]nonan-7- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 543.2 (M + H) 219
##STR00428## 4-(6-(2- (cyclopentanecarbonyl)- 2,7-
diazaspiro[3.5]nonan-7- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 521.2 (M + H)
Example 220
##STR00429##
[0940]
4-(6-(2-acetyl-2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-met-
hyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0941] A solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (6.0
mg, 0.012 mmol) in DMA (0.2 mL) was treated with DIEA (13 .mu.L,
0.072 mmol) and 1 M acetyl chloride in DCM (24 .mu.L, 0.024 mmol).
After stirring at ambient temperature for 1 h the reaction was
quenched with water (0.1 mL) and directly purified by reverse phase
chromatography (5-80% ACN/water) to afford the title compound (4.8
mg, 85% yield). MS (apci) m/z=467.1 (M+H).
Example 221
##STR00430##
[0942]
4-(6-(2-isobutyryl-2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0943] A solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.010 mmol) in DMA (0.2 mL) was treated with DIEA (10.5 .mu.L,
0.060 mmol) and isobutyryl chloride (1.6 .mu.L, 0.015 mmol). After
stirring at ambient temperature overnight the reaction was quenched
with water (3 mL) and stirred for an additional 3 h. The reaction
mixture was extracted with DCM and the combined organic extracts
were concentrated in vacuo and directly purified by reverse phase
chromatography (5-80% ACN/water) to afford the title compound (4.4
mg, 85% yield). MS (apci) m/z=495.1 (M+H).
Example 222
##STR00431##
[0944] isopropyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,7-diazaspiro[3.5]nonane-2-carboxylate
[0945] A solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5.0
mg, 0.010 mmol) in DMA (0.2 mL) was treated with DIEA (11 .mu.L,
0.060 mmol) and 1 M isopropyl carbonochloridate in toluene (20
.mu.L, 0.020 mmol). After stirring at ambient temperature for 4 h
the reaction was quenched with water (0.1 mL), diluted with
additional water (2 mL) and vacuum filtered, rinsing the solids
with water. The solids were dried in vacuo to afford the title
compound (2.9 mg, 57% yield). MS (apci) m/z=511.2 (M+H). .sup.1H
NMR (CDCl.sub.3) .quadrature. 8.63 (d, 1H), 8.36 (d, 1H), 8.26 (s,
1H), 7.79 (s, 1H), 7.74 (dd, 1H), 7.68 (s, 1H), 7.39 (d, 1H), 6.81
(s, 1H), 4.91 (m, 1H), 3.99 (s, 3H), 3.75 (s, 4H), 3.63 (m, 4H),
1.86 (m, 4H), 1.26 (d, 6H).
Example 223
##STR00432##
[0946] tert-butyl
2-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,7-diazaspiro[3.5]nonane-7-carboxylate
[0947] In a microwave vessel, a mixture of tert-butyl
2,7-diazaspiro[3.5]nonane-7-carboxylate (85 mg, 0.38 mmol), DIEA
(44 .quadrature.L, 0.25 mmol), and
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 40 mg, 0.13 mmol) in DMSO (1
mL) was subjected to microwave irradiation at 125.degree. C. for 2
h. After cooling to ambient temperature, the reaction mixture was
directly purified by reverse-phase preparative HPLC (10 to 80%
acetonitrile/water) to give the title compound (12 mg, 18% yield).
MS (apci) m/z=525.2 (M+H).
Example 224
##STR00433##
[0948]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-morpholinopyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile
[0949] In a microwave vessel, a mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 15 mg, 0.0471 mmol) and
morpholine (12.3 .mu.L, 0.128 mmol) in DMSO (0.2 mL) was subjected
to microwave irradiation at 125.degree. C. for 1 h. The reaction
mixture was directly purified by reverse phase chromatography
(5-90% ACN/water). The chromatographic fractions containing title
compound were combined, concentrated and triturated with MTBE (2
mL) to yield the title compound (4.0 mg, 22% yield). MS (apci)
m/z=386.1 (M+H).
Example 225
##STR00434##
[0950]
(S)--N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperidin-3-yl)isobutyramide
Step 1: Preparation of
(S)-4-(6-(3-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl-
)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0951] A mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.100 g, 0.314 mmol),
(S)-tert-butyl piperidin-3-ylcarbamate (0.252 g, 1.26 mmol) and
potassium carbonate (0.174 g, 1.26 mmol) in DMSO (6.28 mL) was
stirred at 110.degree. C. overnight. The reaction mixture was then
acidified to pH 7 with 1 M HCl.sub.(aq) and the resulting
suspension was vacuum filtered and rinsed with water. The isolated
solids were dissolved in 20% MeOH/DCM (5 mL), treated with 4M HCl
in dioxane (1 mL) and concentrated in vacuo to afford the crude
title compound as a solid, which was used directly in the next step
without further purification (0.106 g, 85% yield). MS (apci)
m/z=399.2 (M+H).
Step 2: Preparation of
(S)--N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin--
4-yl)pyridin-2-yl)piperidin-3-yl)isobutyramide
[0952] To a solution of
(S)-4-(6-(3-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl-
)pyrazolo[1,5-a]pyridine-3-carbonitrile (30 mg, 0.075 mmol) and
DIEA (0.079 mL, 0.45 mmol) in DMA (2.5 mL) was added isobutyric
acid (13.3 mg, 0.15 mmol) and HATU (57.3 mg, 0.15 mmol). After
stirring at ambient temperature overnight the reaction mixture was
quenched with water and extracted with EtOAc (3.times.10 mL). The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The crude
residue was purified by silica chromatography (0-50% of 20%
MeOH/DCM in EtOAc) to afford the title compound (14.4 mg, 39%
yield). MS (apci) m/z=469.2 (M+H).
Example 226
##STR00435##
[0953]
(R)--N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperidin-3-yl)isobutyramide
Step 1: Preparation of
(R)-4-(6-(3-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl-
)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0954] A mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.100 g, 0.314 mmol),
tert-butyl (R)-tert-butyl piperidin-3-yl-carbamate (0.252 g, 1.26
mmol) and potassium carbonate (0.174 g, 1.26 mmol) in DMSO (6.28
mL) was stirred at 110.degree. C. overnight. The reaction mixture
was acidified to pH 7 with 1 M HCl.sub.(aq) and the resulting
suspension was vacuum filtered and rinsed with water. The isolated
solids were dissolved in 20% MeOH/DCM (5 mL), treated with 4 M HCl
in dioxane (1 mL) and concentrated to afford the crude title
compound as a solid, which was used directly in the next step
without further purification. MS (apci) m/z=399.2 (M+H).
Step 2: Preparation of
(R)--N-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin--
4-yl)pyridin-2-yl)piperidin-3-yl)isobutyramide
[0955] To a solution of
(R)-4-(6-(3-aminopiperidin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl-
)pyrazolo[1,5-a]pyridine-3-carbonitrile (30 mg, 0.075 mmol) and
DIEA (0.066 mL, 0.38 mmol) in DMA (2.5 mL) was added isobutyric
acid (13.3 mg, 0.15 mmol) and HATU (57.3 mg, 0.15 mmol). After
stirring at ambient temperature overnight the reaction mixture was
quenched with water and extracted with EtOAc (3.times.10 mL). The
combined organic extracts were dried (Na.sub.2SO.sub.4), filtered,
concentrated and purified by silica chromatography (0-50% of 20%
MeOH/DCM in EtOAc) to afford the title compound (0.0131 g, 37%
yield). MS (apci) m/z=469.2 (M+H).
Example 227
##STR00436##
[0956]
(R)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-isopropylmorpholine-2-carboxamide
Step 1: Preparation of
(R)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)morpholine-2-carboxylic acid
[0957] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.100 g, 0.314 mmol) in DMSO
(3.14 mL) was treated with (R)-morpholine-2-carboxylic acid
hydrochloride (0.211 g, 1.26 mmol) and potassium carbonate (0.347
g, 2.51 mmol). The resulting thick suspension was stirred and
heated at 110.degree. C. overnight. The reaction mixture was then
acidified to pH 7 with the addition of 1 M HCl.sub.(aq). The
resulting suspension was vacuum filtered rinsing solids with water
to afford the title compound (0.091 g, 68% yield). MS (apci)
m/z=430.0 (M+H).
Step 2: Preparation of
(R)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-isopropylmorpholine-2-carboxamide
[0958] DIEA (0.051 mL, 0.29 mmol), propan-2-amine (6.9 mg, 0.12
mmol) and HATU (56 mg, 0.15 mmol) were added sequentially to a
solution of
(R)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)morpholine-2-carboxylic acid (25 mg, 0.058 mmol) in
DMA (1.9 mL). After stirring at ambient temperature overnight the
reaction mixture was quenched with water and extracted with EtOAc
(3.times.20 mL). The combined organic extracts were dried
(Na.sub.2SO.sub.4), filtered, concentrated in vacuo and purified by
silica chromatography (4 stepwise separations using from 0-50% of
20% MeOH/DCM in EtOAc to 0-10% MeOH/DCM) to afford the title
compound (0.0069 g, 25% yield). MS (apci) m/z=471.2 (M+H).
Example 228
##STR00437##
[0959]
(S)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-isopropylmorpholine-2-carboxamide
Step 1: Preparation of
(S)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)morpholine-2-carboxylic acid
[0960] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.100 g, 0.31 mmol) in DMSO
(3.14 mL) was treated with (S)-Morpholine-2-carboxylic acid
hydrochloride (0.211 g, 1.26 mmol) and potassium carbonate (0.347
g, 2.51 mmol). The resulting thick suspension was stirred and
heated at 110.degree. C. overnight. The reaction mixture was
acidified to pH 7 with 1 M HCl.sub.(aq). The resulting suspension
was vacuum filtered, rinsing solids with water to afford the title
compound (0.100 g g, 74% yield). MS (apci) m/z=430.0 (M+H).
Step 2: Preparation of
(S)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-isopropylmorpholine-2-carboxamide
[0961] DIEA (0.051 mL, 0.29 mmol), propan-2-amine (6.9 mg, 0.12
mmol) and HATU (55.3 mg, 0.146 mmol) were added sequentially to a
solution
(S)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)morpholine-2-carboxylic acid (25 mg, 0.058 mmol) in
DMA (1.9 mL). After stirring at ambient temperature overnight, the
reaction mixture was quenched with water and extracted with EtOAc
(3.times.20 mL). The combined organic extracts were dried
(Na.sub.2SO.sub.4), filtered, concentrated and purified by silica
chromatography (4 stepwise separations using from 0-50% of 20%
MeOH/DCM in EtOAc to 0-10% MeOH/DCM) to afford the title compound
(5.6 mg, 20.0% yield). MS (apci) m/z=471.2 (M+H).
Example 229
##STR00438##
[0962]
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-isopropylpiperidine-3-carboxamide
Step 1: Preparation of
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)piperidine-3-carboxylic acid
[0963] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 300 mg, 0.942 mmol) in DMSO
(9.42 mL) was treated with (R)-piperidine-3-carboxylic acid (487
mg, 3.77 mmol) and potassium carbonate (521 mg, 3.77 mmol). The
resulting thick suspension was stirred and heated at 110.degree. C.
overnight. The reaction mixture was then adjusted to pH 7 with
saturated NaHCO.sub.3(aq). The resulting suspension was vacuum
filtered, rinsing solids with water to afford the title compound
(0.272 g, 68% yield). MS (apci) m/z=428.2 (M+H).
Step 2: Preparation of
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-isopropylpiperidine-3-carboxamide
[0964] Propan-2-amine (6.9 mg, 0.12 mmol), DIEA (0.051 mL, 0.29
mmol), and HATU (55.3 mg, 0.15 mmol) were added sequentially to a
solution
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)piperidine-3-carboxylic acid (25 mg, 0.058 mmol) in
DMA (2 mL). After stirring at ambient temperature overnight, the
reaction mixture was quenched with water and brine and then
extracted with EtOAc (3.times.20 mL). The combined organic extracts
were dried (Na.sub.2SO.sub.4), filtered, concentrated and purified
by silica chromatography (0-50% of 20% MeOH/DCM in EtOAc) to afford
the title compound (0.0147 g, 54% yield). MS (apci) m/z=469.2
(M+H).
Example 230
##STR00439##
[0965]
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-isopropylpiperidine-3-carboxamide
Step 1: Preparation of
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)piperidine-3-carboxylic acid
[0966] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 100 mg, 0.31 mmol) in DMSO (3
mL) was treated with (S)-piperidine-3-carboxylic acid (162 mg, 1.26
mmol) and potassium carbonate (174 mg, 1.26 mmol). The resulting
suspension was stirred and heated at 110.degree. C. overnight. The
reaction mixture was then adjusted to pH 7 with the addition of
saturated NaHCO.sub.3(aq). The resulting suspension was vacuum
filtered, rinsing solids with water to afford the title compound
(32.9 mg, 26% yield). MS (apci) m/z=428.2 (M+H).
Step 2: Preparation of
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-isopropylpiperidine-3-carboxamide
[0967] Propan-2-amine (8.3 mg, 0.14 mmol), DIEA (0.061 mL, 0.35
mmol), and HATU (53.4 mg, 0.14 mmol) were added sequentially to a
solution
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)piperidine-3-carboxylic acid (30 mg, 0.070 mmol) in
DMA (2.3 mL). After stirring at ambient temperature overnight, the
reaction mixture was quenched with water and brine, and then
extracted with EtOAc (3.times.20 mL). The combined organic extracts
were dried (Na.sub.2SO.sub.4), filtered, concentrated and purified
by silica chromatography (0-50% of 20% MeOH/DCM in EtOAc) to afford
the title compound (0.0204 g, 62% yield). MS (apci) m/z=469.2
(M+H).
Example 231
##STR00440##
[0968]
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-(1,1,1-trifluoropropan-2-yl)piperidine-4-carboxamid-
e
Step 1: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid
[0969] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 1.00 g, 3.14 mmol) in DMSO
(31.4 mL) was treated with piperidine-4-carboxylic acid (1.623 g,
12.57 mmol) and potassium carbonate (1.737 g, 12.57 mmol). The
resulting thick suspension was stirred and heated at 110.degree. C.
overnight. The reaction mixture was then adjusted to pH 7 with
saturated NaHCO.sub.3(aq). The resulting suspension was vacuum
filtered, rinsing solids with water to afford the title compound
(1.077 g, 80% yield). MS (apci) m/z=428.2 (M+H).
Step 2: Preparation of
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-(1,1,1-trifluoropropan-2-yl)piperidine-4-carboxamide
[0970] (S)-1,1,1-trifluoropropan-2-amine (13.2 mg, 0.12 mmol), DIEA
(0.051 mL, 0.29 mmol), and HATU (44.5 mg, 0.12 mmol) were added
sequentially to a solution
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid (25 mg, 0.058 mmol) in DMA
(2 mL). After stirring at ambient temperature overnight, the
reaction mixture was quenched with water and brine, and then
extracted with EtOAc (3.times.10 mL). The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, concentrated
and purified by silica chromatography (0-50% of 20% MeOH/DCM in
EtOAc) to afford the title compound (0.0151 g, 49% yield). MS
(apci) m/z=523.2 (M+H).
[0971] The compounds in Table T were prepared and purified
according the method described for the synthesis of Example 231,
replacing (S)-1,1,1-trifluoropropan-2-amine with the appropriate
amine starting materials.
TABLE-US-00027 TABLE T MS (apci) Ex# Structure Chemical Name m/z
232 ##STR00441## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-(1-
methoxypropan-2- yl)piperidine-4- carboxamide 499.3 (M + H) 233
##STR00442## (R)-1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-(1,1,1-
trifluoropropan-2- yl)piperidine-4- carboxamide 523.2 (M + H) 234
##STR00443## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-(2-iso-
propoxyethyl)piperidine- 4-carboxamide 513.3 (M + H) 235
##STR00444## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-(3,3,3-trifluoro-
2- methoxypropyl)piperidine- 4-carboxamide 553.2 (M + H) 236
##STR00445## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-(2-methoxy-3-
methylbutyl)piperidine- 4-carboxamide 527.3 (M + H) 237
##STR00446## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-
ethoxypiperidine-4- carboxamide 471.2 (M + H) 238 ##STR00447##
1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin- 2-yl)-N-(3,3-difluoro-
cyclobutyl)piperidine- 4-carboxamide 517.1 (M + H) 239 ##STR00448##
1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin- 2-yl)-N-(2- methoxypropyl)piperidine-
4-carboxamide 499.1 (M + H) 240 ##STR00449## 1-(5-(3-cyano-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-
2-yl)-N-((1r,3r)-3-meth- oxycyclobutyl)piperidine- 4-carboxamide
511.2 (M + H) 241 ##STR00450## 1-(5-(3-cyano-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-
2-yl)-N-((1s,3s)-3-meth- oxycyclobutyl)piperidine- 4-carboxamide
511.2 (M + H)
Example 242
##STR00451##
[0972]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-(3,3,3-trifluoropropyl)piperidine-4-carboxamide
[0973] To a solution of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid (25 mg, 0.058 mmol) in DMF
(2 mL) was added DIEA (0.0102 mL, 0.058 mmol),
3,3,3-trifluoropropylamine (6.6 mg, 0.058 mmol), and HBTU (24.4 mg,
0.064 mmol). After stirring at 40.degree. C. overnight, the
reaction mixture was quenched with water and brine and then
extracted with EtOAc (3.times.10 mL). The combined organic extracts
were dried (Na.sub.2SO.sub.4), filtered, concentrated and purified
by silica chromatography (0-50% of 20% MeOH/DCM in EtOAc) to afford
the title compound (0.017 g, 55% yield). MS (apci) m/z=523.1
(M+H).
Example 243
##STR00452##
[0974]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-(2,2,2-trifluoroethyl)piperidine-4-carboxamide
[0975] To a solution
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid (0.025 g, 0.05849 mmol) in
DMF (2 mL) was added DIEA (0.0102 mL, 0.0585 mmol),
2,2,2-trifluoroethanamine (5.8 mg, 0.058 mmol), and HBTU (0.0244 g,
0.0643 mmol). After stirring at 40.degree. C. overnight, the
reaction mixture was quenched with water and brine and then
extracted with EtOAc (3.times.10 mL). The combined organic extracts
were dried (Na.sub.2SO.sub.4), filtered, concentrated and purified
by reverse phase chromatography (0-80% ACN/water) to afford the
title compound (8.8 mg, 28% yield). MS (apci) m/z=509.1 (M+H).
Example 244
##STR00453##
[0976]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-isobutyl-N-methylpiperidine-4-carboxamide
[0977] N-methylisobutylamine (5.1 mg, 0.058 mmol), DIEA (0.010 mL,
0.058 mmol), and HBTU (24.4 mg, 0.064 mmol) were added sequentially
to a solution
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidine-4-carboxylic acid (25 mg, 0.058 mmol)
in DMF (2 mL). After stirring at 30.degree. C. overnight, the
reaction mixture was quenched with water then extracted with EtOAc
(3.times.10 mL). The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, concentrated in vacuo, and
purified by silica chromatography (0-50% of 20% MeOH/DCM in EtOAc)
to afford the title compound (0.019 g, 64% yield). MS (apci)
m/z=497.2 (M+H).
[0978] The compounds in Table U were prepared and purified
according to the method described for the synthesis of Example 244,
replacing N-methylisobutylamine with the appropriate amine starting
material.
TABLE-US-00028 TABLE U MS (apci) Ex# Structure Chemical Name m/z
245 ##STR00454## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-(2-
hydroxypropyl)-N- methylpiperidine-4- carboxamide 499.2 (M + H) 246
##STR00455## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-
isopropylpiperidine-4- carboxamide 469.2 (M + H) 247 ##STR00456##
1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin- 2-yl)-N-isopropyl-N- methylpiperidine-4-
carboxamide 483.3 (M + H)
Example 248
##STR00457##
[0979]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrrolidine-1-carbonyl)piperi-
din-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[0980] A solution of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid (0.100 g, 0.23 mmol) in THF
(4 mL) was cooled to -5.degree. C. and then treated with TEA (0.098
mL, 0.70 mmol) and ethyl carbonochloridate (0.11 mL, 1.170 mmol).
The resulting reaction mixture was stirred for 30 min, and then
pyrrolidine (0.097 mL, 1.17 mmol) was then added. After stirring at
-5 OC for 30 min the reaction mixture was stirred at ambient
temperature for 4 h, and then several more drops of TEA and
pyrrolidine were added. The resulting reaction mixture was stirred
at ambient temperature for an additional 1 h, then quenched with
water and extracted with EtOAc (3.times.10 mL). The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, concentrated and purified by silica chromatography (0-50%
of 20% MeOH/DCM in EtOAc) to afford the title compound (0.0045 g,
4% yield). MS (apci) m/z=481.1 (M+H).
Example 249
##STR00458##
[0981]
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperidin-4-yl)-N-isopropylacetamide
Step 1: Preparation of
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)-
pyridin-2-yl)piperidin-4-yl)acetic acid
[0982] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.309 g, 0.97 mmol) in DMSO
(9.7 mL) was treated with 2-(piperidin-4-yl)acetic acid (0.556 g,
3.88 mmol) and potassium carbonate (0.537 g, 3.88 mmol). The
resulting suspension was stirred and heated at 110.degree. C.
overnight. The reaction mixture was then adjusted to pH 7 with
saturated NaHCO.sub.3(aq). The resulting suspension was vacuum
filtered, rinsing solids with water to afford the title compound
(0.1924 g, 45% yield). MS (apci) m/z=442.2 (M+H).
Step 2: Preparation of
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)-
pyridin-2-yl)piperidin-4-yl)-N-isopropylacetamide
[0983] Propan-2-amine (0.00669 g, 0.113 mmol), DIEA (0.049 mL,
0.283 mmol), and HATU (0.0431 g, 0.113 mmol) were added
sequentially to a solution
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
din-4-yl)pyridin-2-yl)piperidin-4-yl)acetic acid (0.025 g, 0.0566
mmol) in DMA (1.89 mL). After stirring at ambient temperature for
30 min, the reaction mixture was quenched with water and brine and
then extracted with EtOAc (3.times.10 mL). The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered,
concentrated and purified by silica chromatography (0-50% of 20%
MeOH/DCM in EtOAc) to afford the title compound (0.014 g, 51%
yield). MS (apci) m/z=483.3 (M+H).
Example 250
##STR00459##
[0984]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-4-methyl-N-(3,3,3-trifluoropropyl)piperidine-4-carboxamid-
e
Step 1: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-methylpiperidine-4-carboxylic acid
[0985] A mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.45 g, 1.41 mmol),
4-methylpiperidine-4-carboxylic acid (0.81 g, 5.66 mmol) and
potassium carbonate (0.78 g, 5.66 mmol) in DMSO (14 mL) was stirred
at 110.degree. C. overnight. The reaction mixture was then adjusted
to pH 7 with saturated NaHCO.sub.3(aq). The resulting suspension
was vacuum filtered and the solids were rinsed with water to afford
the crude title product as a solid, which was directly used in the
next step without further purification. MS (apci) m/z=442.2
(M+H).
Step 2: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-methyl-N-(3,3,3-trifluoropropyl)piperidine-4-carboxamide
[0986] To a solution of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-methylpiperidine-4-carboxylic acid (25 mg, 0.056 mmol)
in DMA (1.9 mL) was added 3,3,3-trifluoropropylamine (12.8 mg, 0.11
mmol), DIEA (0.050 mL, 0.28 mmol) and HATU (43.1 mg, 0.11 mmol).
After stirring at ambient temperature for 30 min, the reaction
mixture was quenched with water and brine and then extracted with
EtOAc (3.times.10 mL). The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, concentrated and
purified by silica chromatography (0-50% of 20% MeOH/DCM in EtOAc)
to afford the title compound (0.0234 g, 73% yield). MS (apci)
m/z=537.2 (M+H).
[0987] The compounds in Table V were prepared and purified
according the method described for the synthesis of Example 250,
replacing 3,3,3-trifluoropropylamine with the appropriate amine
starting material.
TABLE-US-00029 TABLE V MS (apci) Ex# Structure Chemical Name m/z
251 ##STR00460## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)-N-isopropyl-4-
methylpiperidine-4- carboxamide 483.3 (M + H) 252 ##STR00461##
1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin- 2-yl)-N-(1- methoxypropan-2-yl)-4-
methylpiperidine-4- carboxamide 513.3 (M + H) 253 ##STR00462##
(R)-1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin- 2-yl)-4-methyl-N- (1,1,1-trifluoropropan-
2-yl)piperidine-4- carboxamide 537.3 (M + H)
Example 254
##STR00463##
[0988] Methyl
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-methylpiperidine-4-carboxylate
[0989] A mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.060 g, 0.188 mmol), methyl
4-methyl-4-piperidinecarboxylate (0.119 g, 0.754 mmol) and
potassium carbonate (0.104 g, 0.754 mmol) in DMSO (1.88 mL) was
heated overnight at 110.degree. C. The pH of the reaction mixture
was then adjusted to 7 with saturated NaHCO.sub.3(aq). The
resulting suspension was vacuum filtered and rinsed with water and
hexanes to afford the title compound (0.0451 g, 50% yield). MS
(apci) m/z=456.2 (M+H).
Example 255
##STR00464##
[0990]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-4-ethyl-N-(3,3,3-trifluoropropyl)piperidine-4-carboxamide
Step 1: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-ethylpiperidine-4-carboxylic acid
[0991] A mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.300 g, 0.942 mmol),
4-ethylpiperidine-4-carboxylic acid (0.593 g, 3.77 mmol) and
potassium carbonate (0.521 g, 3.77 mmol) in DMSO (9.4 mL) was
heated overnight at 110.degree. C. The reaction mixture pH was then
adjusted to 7 with saturated NaHCO.sub.3(aq). The resulting
suspension was vacuum filtered and rinsed with water to afford the
title compound (0.176 g, 41% yield). MS (apci) m/z=456.2 (M+H).
Step 2: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-ethyl-N-(3,3,3-trifluoropropyl)piperidine-4-carboxamide
[0992] 3,3,3-trifluoropropan-1-amine (12.4 mg, 0.11 mmol), DIEA
(0.0478 mL, 0.274 mmol), and HATU (41.7 mg, 0.110 mmol) were added
sequentially to a solution
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-4-ethylpiperidine-4-carboxylic acid (25 mg, 0.055 mmol)
in DMA (1.83 mL). After stirring at ambient temperature for 1.5 h,
the reaction mixture was quenched with water and brine and then
extracted with EtOAc (3.times.10 mL). The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, concentrated
and purified by silica chromatography (0-50% of 20% MeOH/DCM in
EtOAc) to afford the title compound (0.0072 g, 24% yield). MS
(apci) m/z=551.2 (M+H).
[0993] The compounds in the following Table W were prepared and
purified according the method described for the synthesis of
Example 255, replacing 3,3,3-trifluoropropylamine with the
appropriate amine starting material.
TABLE-US-00030 TABLE W MS (apci) Ex# Structure Chemical Name m/z
256 ##STR00465## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4- yl)pyridin-2-yl)-4- ethyl-N-
isopropylpiperidine-4- carboxamide 497.2 (M + H) 257 ##STR00466##
(R)-1-(5-(3-cyano-6- (1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4- yl)pyridin-2-yl)-4- ethyl-N-(1,1,1- trifluoropropan-2-
yl)piperidine-4- carboxamide 551.1 (M + H) 258 ##STR00467##
1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4- yl)pyridin-2-yl)-4- ethyl-N-(2-hydroxy- 2-
methylpropyl)piperidine- 4-carboxamide 527.3 (M + H) 549.3 (M +
Na)
Example 259
##STR00468##
[0994]
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-(3,3,3-trifluoropropyl)pyrrolidine-3-carboxamide
Step 1: Preparation of
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)pyrrolidine-3-carboxylic acid
[0995] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.300 g, 0.9425 mmol) in DMSO
(9.425 mL) was treated with (R)-pyrrolidine-3-carboxylic acid
(0.4340 g, 3.770 mmol) and potassium carbonate (0.5210 g, 3.770
mmol). The resulting thick suspension was stirred and heated
overnight at 110.degree. C. The reaction mixture was acidified to
pH 7 with saturated NaHCO.sub.3(aq). The resulting suspension was
diluted with water and brine and then vacuum filtered, rinsing
solids with water and hexanes to afford the title compound (0.31 g,
79% yield). MS (apci) m/z=414.1 (M+H).
Step 2: Preparation of
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-(3,3,3-trifluoropropyl)pyrrolidine-3-carboxamide
[0996] 3,3,3-trifluoropropan-1-amine (13.7 mg, 0.121 mmol), DIEA
(0.0527 mL, 0.30 mmol), and HATU (46.0 mg, 0.12 mmol) were added
sequentially to a solution
(R)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)pyrrolidine-3-carboxylic acid (25 mg, 0.060 mmol) in
DMA (2.0 mL). After stirring at ambient temperature overnight, the
reaction mixture was quenched with water and brine and then
extracted with EtOAc (3.times.20 mL). The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, concentrated
and purified by silica chromatography (0-50% of 20% MeOH/DCM in
EtOAc) to afford the title compound (18.5 mg, 59% yield). MS (apci)
m/z=509.1 (M+H).
[0997] The compounds in Table X were prepared and purified
according the method described for the synthesis of Example 259,
replacing 3,3,3-trifluoropropan-1-amine with the appropriate amine
starting material.
TABLE-US-00031 TABLE X MS (apci) Ex# Structure Chemical Name m/z
260 ##STR00469## (R)-6-(1-methyl-1H-pyrazol-
4-yl)-4-(6-(3-(pyrrolidine-1- carbonyl)pyrrolidin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 467.2 (M +
H) 261 ##STR00470## (R)-1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin-4- yl)pyridin-2-yl)-N-
isopropylpyrrolidine-3- carboxamide 455.2 (M + H)
Example 262
##STR00471##
[0998]
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-(3,3,3-trifluoropropyl)pyrrolidine-3-carboxamide
Step 1: Preparation of
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)pyrrolidine-3-carboxylic acid
[0999] A solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.300 g, 0.9425 mmol) in DMSO
(9.425 mL) was treated with (S)-pyrrolidine-3-carboxylic acid
(0.434 g, 3.77 mmol) and potassium carbonate (0.521 g, 3.77 mmol).
The resulting thick suspension was stirred and heated at
110.degree. C. overnight. The reaction mixture was then acidified
to pH 7 with saturated NaHCO.sub.3(aq). The resulting suspension
was diluted with water and brine and then vacuum filtered, rinsing
the solids with water and hexanes to afford the title compound
(0.523 g, quantitative yield). MS (apci) m/z=414.2 (M+H).
Step 2: Preparation of
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)-N-(3,3,3-trifluoropropyl)pyrrolidine-3-carboxamide
[1000] 3,3,3-trifluoropropan-1-amine (0.0137 g, 0.121 mmol), DIEA
(0.0527 mL, 0.302 mmol), and HATU (0.0460 g, 0.121 mmol) were added
sequentially to a solution
(S)-1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)pyrrolidine-3-carboxylic acid (0.025 g, 0.0605 mmol)
in DMA (2.02 mL). After stirring at ambient temperature overnight,
the reaction mixture was quenched with water and brine and then
extracted with EtOAc (3.times.10 mL). The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, concentrated
and purified by silica chromatography (0-50% of 20% MeOH/DCM in
EtOAc) to afford the title compound (0.0141 g, 45% yield). MS
(apci) m/z=509.2 (M+H).
[1001] The compounds in Table Y were prepared and purified
according the method described for the synthesis of Example 262,
replacing 3,3,3-trifluoropropan-1-amine with the appropriate amine
starting materials.
TABLE-US-00032 TABLE Y MS (apci) Ex# Structure Chemical Name m/z
263 ##STR00472## (S)-6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(3-
(pyrrolidine-1- carbonyl)pyrrolidin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 467.2 (M + H) 264
##STR00473## (S)-1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N-
isopropylpyrrolidine-3- carboxamide 455.2 (M + H)
Example 265
##STR00474##
[1002] tert-Butyl
4-(5-(3-cyano-6-(1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)piperazine-1-carboxylate
[1003] In a pressure tube tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 150 mg,
0.271 mmol),
1-(difluoromethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
-1H-pyrazole (133 mg, 0.543 mmol), Pd(PPh.sub.3).sub.4 (31.4 mg,
0.0271 mmol) and 2 M Na.sub.2CO.sub.3(aq) (679 .mu.L, 1.36 mmol) in
dioxane (20 mL) was sparged with nitrogen, then sealed and heated
at 100.degree. C. overnight with stirring. After cooling to ambient
temperature, the reaction mixture was diluted with water (10 mL)
and filtered, and the solids were rinsed with water and Et.sub.2O
and then air dried to afford the title compound (124 mg, 88%
yield). MS (apci) m/z=521.2 (M+H).
Example 266
##STR00475##
[1004]
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-
-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
[1005] To a solution of tert-butyl
4-(5-(3-cyano-6-(1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)piperazine-1-carboxylate (120 mg, 0.231 mmol)
in DCM (5 mL) was added 5 M HCl in iPrOH (231 .mu.L, 1.15 mmol).
After stirring the resulting suspension at ambient temperature
overnight the reaction mixture was concentrated in vacuo to afford
the title compound (111 mg, 98% yield). MS (apci) m/z=421.1
(M+H).
Example 267
##STR00476##
[1006]
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-(3-methylbutanoyl)pi-
perazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1007] To a solution of
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)-
pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg,
0.020 mmol) in DMF (0.2 mL) was added 3-methylbutanoyl chloride
(3.7 mg, 0.030 mmol) and TEA (8.5 .mu.L, 0.061 mmol). The reaction
mixture stirred at ambient temperature for 1 h and then directly
purified by reverse phase chromatography (0-60% ACN/water) to
afford the title compound (3.4 mg, 33% yield). MS (apci) m/z=505.1
(M+H).
Example 268
##STR00477##
[1008]
(R)-6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-(2-hydroxy-2-phe-
nylacetyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1009] To a solution of
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)-
pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg,
0.020 mmol) in DMF (0.2 mL) was added 3-methylbutanoyl chloride
(3.7 mg, 0.030 mmol) and TEA (8.5 .mu.L, 0.061 mmol). The reaction
mixture was stirred at ambient temperature for 1 h and then
directly purified by reverse phase chromatography (0-60% ACN/water)
to afford the title compound (3.4 mg, 33% yield). MS (apci)
m/z=555.1 (M+H).
Example 269
##STR00478##
[1010]
(S)-6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-(3-methoxypyrrol-
idine-1-carbonyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-car-
bonitrile
Step 1: Preparation of (S)-3-methoxypyrrolidine-1-carbonyl
chloride
[1011] Triphosgene (129 mg, 0.436 mmol) was added in small portions
over a 30 min period to a suspension of (S)-3-methoxypyrrolidine
hydrochloride (200 mg, 1.45 mmol) and DIEA (1.52 mL, 8.72 mmol) in
DCM (3.48 mL). The resulting mixture was stirred at ambient
temperature for 3 h to provide the title compound as a fine
suspension in DCM (0.25 M) which was used in the next step without
further purification.
Step 2: Preparation of
(S)-6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-(3-methoxypyrrolidine--
1-carb
onyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonit-
rile
[1012] To a mixture of
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)-
pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (20 mg,
0.0405 mmol) and DIEA (42.4 .mu.L, 0.243 mmol) in DCM (405 .mu.L)
was added (S)-3-methoxypyrrolidine-1-carbonyl chloride in DCM (0.25
M, 195 .mu.L, 0.0486 mmol). The reaction was stirred at ambient
temperature for 3 d and then directly purified by reverse phase
chromatography (0-75% ACN/water) to afford the title compound (1.8
mg, 8% yield). MS (apci) m/z=548.1 (M+H).
Example 270
##STR00479##
[1013] tert-Butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1014] tert-Butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 150 mg,
0.271
mmol),1-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-
e (113 mg, 0.543 mmol), Pd(PPh.sub.3).sub.4 (31.4 mg, 0.0271 mmol)
and 2 M Na.sub.2CO.sub.3(aq) (679 .mu.L, 1.36 mmol) in dioxane (2
mL) were combined in a pressure tube. The resulting reaction
mixture was sparged with nitrogen and then sealed and heated at
100.degree. C. overnight. The reaction mixture was cooled to
ambient temperature, then diluted with water (10 mL) and filtered.
The solids were washed with water (2.times.5 mL) and Et.sub.2O
(2.times.5 mL) and air dried to afford the title compound (108 mg,
82% yield). MS (apci) m/z=485.2 (M+H).
Example 271
##STR00480##
[1015]
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
[1016] To a solution of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (100 mg, 0.206 mmol) in DCM (5
mL) was added 5 M HCl in iPrOH (206 .mu.L, 1.03 mmol). After
stirring at ambient temperature overnight the resulting suspension
was filtered. The isolated solids were washed with Et.sub.2O
(2.times.5 mL) and then air dried to afford the title compound (95
mg, quantitative yield). MS (apci) m/z=385.1 (M+H).
Example 272
##STR00481##
[1017]
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(1-methyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1018] (R)-2-hydroxy-2-phenylacetic acid (7.5 mg, 0.049 mmol), HATU
(25 mg, 0.066 mmol), and TEA (23 .mu.L, 0.16 mmol) were added
sequentially to a solution of
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (15 mg, 0.033 mmol) in
DMF (328 .mu.L). After stirring at ambient temperature for 1 h, the
reaction mixture was purified by reverse phase chromatography
(0-60% ACN/water) to afford the title compound (4.3 mg, 25% yield).
MS (apci) m/z=519.2 (M+H).
Example 273
##STR00482##
[1019]
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(4-(3-methylbutanoyl)piperazin-1--
yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1020] A solution of
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.22 mmol) in
DMF (0.2 mL) was treated with 3-methylbutanoyl chloride (4.0 mg,
0.033 mmol) and TEA (9.1 .mu.L, 0.066 mmol). After stirring at
ambient temperature for 1 h, the reaction mixture was purified by
reverse phase chromatography (0-60% ACN/water) to afford the title
compound (5.7 mg, 56% yield). MS (apci) m/z=469.1 (M+H).
Example 274
##STR00483##
[1021]
(S)-4-(6-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyridin-
-3-yl)-6-(1-methyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1022] A solution of
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (20 mg, 0.0437 mmol)
and DIEA (45.7 .mu.L, 0.262 mmol) in DCM (437 .mu.L) was treated
with (S)-3-methoxypyrrolidine-1-carbonyl chloride (Example 269,
Step 1, 0.25 M, 210 .mu.L, 0.0525 mmol) and TEA (9.1 .mu.L, 0.066
mmol). After stirring at ambient temperature for 3 d, the reaction
mixture was purified by reverse phase chromatography (0-75%
ACN/water) to afford the title compound (2.9 mg, 13% yield). MS
(apci) m/z=512.2 (M+H).
Example 275
##STR00484##
[1023] tert-Butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)-3--
methylpyridin-2-yl)piperazine-1-carboxylate
[1024] A mixture of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 250 mg, 0.673 mmol),
tert-butyl
4-(3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)p-
iperazine-1-carboxylate (299 mg, 0.741 mmol), Pd(PPh.sub.3).sub.4
(19.5 mg, 0.0168 mmol), and 2 M K.sub.2CO.sub.3(aq) (2020 .mu.L,
4.04 mmol) in dioxane (2693 .mu.L) was sparged with nitrogen, then
sealed and heated at 85.degree. C. for 12 h. After cooling to
ambient temperature, the reaction mixture was partitioned between
EtOAc (10 mL) and 2 M K.sub.2CO.sub.3(aq) (10 mL) and the phases
were separated. The emulsified organic phase was filtered through a
PVDF (0.45 m) disc and the filtrate was washed with brine. The
combined organic extracts were concentrated in vacuo and the
residue was purified directly by reverse phase chromatography
(5-75% ACN/water) to afford the title compound (0.11 g, 32% yield).
MS (apci) m/z=499.2 (M+H).
Example 276
##STR00485##
[1025]
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-methyl-6-(piperazin-1-yl)pyridin--
3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
[1026] To a solution of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)-3--
methylpyridin-2-yl)piperazine-1-carboxylate (Example 275, 110 mg,
0.221 mmol) in DCM (4 mL) was added 5 M HCl in iPrOH (2206 .mu.L,
11.0 mmol). The resulting suspension was stirred at ambient
temperature 1 h and then concentrated to near dryness in vacuo. The
residue was treated with Et.sub.2O, concentrated, and dried in
vacuo to afford the title compound (104 mg, 98% yield). MS (apci)
m/z=399.1 (M+H).
Example 277
##STR00486##
[1027]
4-(6-(4-(3-hydroxy-3-methylbutanoyl)piperazin-1-yl)-5-methylpyridin-
-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1028] 3-hydroxy-3-methylbutanoic acid (4.51 mg, 0.0382 mmol) and
HATU (14.5 mg, 0.0382 mmol) were dissolved in DMA (159 .mu.L) and
the mixture was stirred at ambient temperature for 10 min.
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-methyl-6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 276,
15 mg, 0.0318 mmol) was added in one portion followed by DIEA (27.7
.mu.L, 0.159 mmol). After stirring for 45 min, the reaction mixture
was directly purified by reverse-phase chromatography (5-60%
ACN/water) to afford the title compound (10.2 mg, 62% yield). MS
(apci) m/z=499.2 (M+H).
Example 278
##STR00487##
[1029]
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)-5-methylpyrid-
in-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitril-
e
[1030] (R)-2-hydroxy-2-phenylacetic acid (5.8 mg, 0.038 mmol) and
HATU (15 mg, 0.038 mmol) were dissolved in DMA (159 .mu.L) and
stirred at ambient temperature for 10 min.
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-methyl-6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 276,
15 mg, 0.032 mmol) was added in one portion followed by DIEA (28
.mu.L, 0.16 mmol). After stirring for 90 min, the reaction was
directly purified by reverse-phase chromatography (5-60% ACN/water)
to afford the title compound (9.3 mg, 53% yield). MS (apci)
m/z=533.1 (M+H).
Example 279
##STR00488##
[1031]
4-(6-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)-5-methylpyridin-3-yl)-
-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1032] To a mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-methyl-6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 276,
15 mg, 0.0318 mmol) in DCM (159 .mu.L) was added DIEA (27.7 .mu.L,
0.159 mmol) followed by 3,3-dimethylbutanoyl chloride (5.14 mg,
0.0382 mmol). After stirring for 45 min at ambient temperature, the
reaction mixture was directly purified by reverse-phase
chromatography (C18, 5-75% ACN/water) to afford the title compound
(12.7 mg, 78% yield). MS (apci) m/z=497.1 (M+H).
Example 280
##STR00489##
[1033]
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-methyl-6-(4-(pyrrolidine-1-carbon-
yl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1034] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-methyl-6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 276,
20 mg, 0.0424 mmol) and DIEA (44.3 .mu.L, 0.255 mmol) in
DriSolv.RTM. DCM (212 .mu.L) was added dropwise to a 0.degree. C.
solution of triphosgene (6.30 mg, 0.0212 mmol) in DriSolv.RTM. DCM
(212 .mu.L) and the reaction mixture was stirred for 2 h, followed
by the addition of pyrrolidine (3.02 mg, 0.0424 mmol) in one
portion. The reaction mixture was stirred at ambient temperature
for 2 d and then directly purified by reverse-phase chromatography
(C18, 5-60% ACN/water) to provide the title compound (16.2 mg, 76%
yield). MS (apci) m/z=496.2 (M+H).
Example 281
##STR00490##
[1035]
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)py-
razolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
imidin-2-yl)piperazine-1-carboxylate
[1036]
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 2.00 g, 5.39 mmol),
(2-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyrimidin-5-yl)boronic
acid (2.49 g, 8.08 mmol), Pd(PPh.sub.3).sub.4 (0.124 g, 0.108 mmol)
and K.sub.3PO.sub.4 (3.43 g, 16.2 mmol) were combined in dioxane
(20 mL) in a pressure tube. The resulting reaction mixture was
sparged with nitrogen, sealed, and heated at 100.degree. C.
overnight and then cooled to ambient temperature. The reaction
mixture was diluted with water (10 mL) and extracted with several
portions of DCM in a PS frit. The combined DCM extracts were
concentrated in vacuo and purified by silica chromatography
(10-100% EtOAc/hexanes) to afford the title compound (0.148 g, 6%
yield). MS (apci) m/z=386.1 (M+H-Boc).
Step 2: Preparation of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride
[1037] To a solution tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (140 mg, 0.289 mmol) in DCM (10
mL) was added 5 M HCl in iPrOH (173 .mu.L, 0.867 mmol). The
reaction mixture was stirred at ambient temperature for 6 h and
then diluted with Et.sub.2O (10 mL). The resulting suspension was
vacuum filtered and the solids were washed with Et.sub.2O and air
dried to afford the title compound (92 mg, 70% yield). MS (apci)
m/z=386.0 (M+H).
Example 282
##STR00491##
[1038]
(R)-4-(2-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyrimidin-5-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1039] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (12 mg, 0.262 mmol)
in DMF (105 .mu.L) was treated sequentially with
(R)-2-hydroxy-2-phenylacetic acid (0.0133 g, 0.151 mmol), HATU
(19.9 mg, 0.0524 mmol), and TEA (18.2 .mu.L, 0.131 mmol). The
resulting reaction mixture was stirred at ambient temperature
overnight and then directly purified by reverse phase
chromatography (0-65% ACN/water) to afford the title compound (10.8
mg, 79.4% yield). MS (apci) m/z=520.1 (M+H).
Example 283
##STR00492##
[1040]
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(4-(3-methylbutanoyl)piperazin-1--
yl)pyrimidin-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1041] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.22 mmol)
in DMF (0.2 mL) was treated with TEA (9.1 .mu.L, 0.065 mmol) and
3-methylbutanoyl chloride (3.9 mg, 0.033 mmol). The resulting
reaction mixture was stirred at ambient temperature overnight and
then directly purified by reverse phase chromatography (0-60%
ACN/water) to afford the title compound (3.1 mg, 30% yield). MS
(apci) m/z=470.1 (M+H).
Example 284
##STR00493##
[1042]
(R)-4-(2-(4-(2-methoxy-2-phenylacetyl)piperazin-1-yl)pyrimidin-5-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1043] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.22 mmol)
in DMF (87 .mu.L) was added (R)-2-methoxy-2-phenylacetic acid (11
mg, 0.065 mmol), DMAP (2.7 mg, 0.022 mmol), DIEA (11 .mu.L, 0.065
mmol) and EDC-HCl (17 mg, 0.087 mmol). The resulting reaction
mixture was stirred at ambient temperature overnight and then
purified directly using reverse phase chromatography (0-65%
ACN/water) to provide the title compound (6.8 mg, 58% yield). MS
(apci) m/z=534.1 (M+H).
Example 285
##STR00494##
[1044]
(R)-4-(2-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyrimidin-5--
yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1045] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.022 mmol)
and EDC-HCl (17 mg, 0.087 mmol) in DMF (0.2 mL) was treated with
(R)-2-hydroxy-3-methylbutanoic acid (7.7 mg, 0.065 mmol), DMAP (2.7
mg, 0.022 mmol) and TEA (15 .mu.L, 0.11 mmol). The resulting
reaction mixture was stirred at ambient temperature overnight and
then purified directly using reverse phase chromatography (0-55%
ACN/water) to provide the title compound (6.2 mg, 59% yield). MS
(apci) m/z=486.1 (M+H).
Example 286
##STR00495##
[1046]
(S)-4-(2-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyrimid-
in-5-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitril-
e
[1047] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (20 mg, 0.044 mmol)
and DIEA (46 .mu.L, 0.26 mmol) in DCM (436 .mu.L) was treated with
(S)-3-methoxypyrrolidine-1-carbonyl chloride (Example 269, Step 1,
0.25 M, 209 .mu.L, 0.052 mmol). The reaction was stirred for 3 d at
ambient temperature and directly purified by reverse phase
chromatography (0-75% ACN/water) to provide the title compound (4.5
mg, 20% yield). MS (apci) m/z=513.1 (M+H).
Example 287
##STR00496##
[1048]
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-(piperazin-1-yl)pyrazin-2-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
azin-2-yl)piperazine-1-carboxylate
[1049]
3-Cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 100 mg, 0.269 mmol),
tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazin-2-yl)piperazine-
-1-carboxylate (105 mg, 0.269 mmol), Na.sub.2CO.sub.3 (143 mg, 1.35
mmol) and Pd(PPh.sub.3).sub.4 (15.6 mg, 0.0135 mmol) were combined
in 4:1 dioxane/water (4 mL). The resulting reaction mixture was
purged with Argon for 10 min and then heated at 90.degree. C. under
continued atmosphere of Argon overnight. The reaction mixture was
cooled to ambient temperature and then concentrated in vacuo. The
crude residue was partitioned between DCM (50 mL) and water (50 mL)
and the combined organic extracts were dried over MgSO.sub.4,
filtered and concentrated in vacuo to afford the title compound. MS
(apci) m/z=486.2 (M+H). The crude product was used directly in the
next step without further purification.
Step 2: Preparation of
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-(piperazin-1-yl)pyrazin-2-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride
[1050] A solution of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
azin-2-yl)piperazine-1-carboxylate (131 mg, 0.270 mmol) in DCM (4
mL) was treated with TFA (2 mL) at ambient temperature. The
resulting mixture was stirred overnight at ambient temperature and
then concentrated in vacuo. The crude residue was dissolved in a
solution of 20% iPrOH in DCM (50 mL) and extracted with 10%
NaHCO.sub.3(aq) (50 mL). The aqueous layer was separated and then
extracted with a solution of 20% iPrOH in DCM (50 mL). The combined
organic extracts were dried over MgSO.sub.4, filtered and
concentrated in vacuo. The resulting crude residue was purified
twice, first by silica chromatography (eluting with 10% MeOH in DCM
and then with 5% MeOH in DCM containing 2% TEA), then by reverse
phase chromatography (5-95% ACN/water) to afford the title compound
(0.051 g, 49% yield). MS (apci) m/z=386.0 (M+H).
Example 288
##STR00497##
[1051]
(R)-4-(5-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyrazin-2-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1052] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-(piperazin-1-yl)pyrazin-2-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (20 mg, 0.052 mmol) in DMF (4 mL) was
treated sequentially with D-(-)-Mandelic acid (11.84 mg, 0.07784
mmol), HATU (19.9 mg, 0.0524 mmol), and DIEA (90.38 .mu.L, 0.5189
mmol). The resulting reaction mixture was stirred at ambient
temperature overnight and then partitioned between water (50 mL)
and EtOAc (50 mL). The combined organic extracts were dried over
MgSO.sub.4, filtered and concentrated in vacuo. The crude residue
was purified by silica chromatography (1:4 hexanes/EtOAc) to afford
the title compound (0.016 g, 60% yield). MS (apci) m/z=520.2
(M+H).
Example 289
##STR00498##
[1053]
(S)-4-(5-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyrazin-
-2-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1054] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-(piperazin-1-yl)pyrazin-2-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (32 mg, 0.083 mmol) and DIEA (87
.mu.L, 0.50 mmol) in DriSolv.RTM. DCM (415 .mu.L) was cooled to
0.degree. C. and then added dropwise to a 0 OC solution of
triphosgene (11 mg, 0.037 mmol) in DriSolv.RTM. DCM (415 .mu.L).
After stirring the reaction mixture for 0.5 h at 0.degree. C.,
(S)-3-methoxypyrrolidine hydrochloride (11 mg, 0.083 mmol) was
added in one portion, and the reaction was stirred at ambient
temperature overnight. The reaction mixture was directly purified
by silica chromatography (5% MeOH in EtOAc as eluent) to afford the
title compound (0.023 g, 54% yield). MS (apci) m/z=513.3 (M+H).
Example 290
##STR00499##
[1055] tert-Butyl
4-(4-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)phe-
nyl)piperazine-1-carboxylate
[1056]
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 25 mg, 0.0673 mmol),
tert-butyl
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperazine-1-car-
boxylate (34.0 mg, 0.0875 mmol), Pd(PPh.sub.3).sub.4 (7.78 mg,
0.00673 mmol) and 2 M Na.sub.2CO.sub.3(aq) (362 .mu.L, 0.723 mmol)
were combined in dioxane (0.3 mL) in a pressure tube. The resulting
reaction mixture was sparged with nitrogen and then sealed and
heated at 100.degree. C. for 2 h. The reaction mixture was cooled
to ambient temperature, then diluted with brine (1 mL) and
extracted with several portions of DCM. The combined DCM extracts
were concentrated in vacuo and purified directly by reverse phase
chromatography (0-70% ACN/water) to afford the title compound (28
mg, 72% yield). MS (apci) m/z=215.1 (M+H-Boc).
Example 291
##STR00500##
[1057]
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride
[1058] To a solution tert-butyl
4-(4-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)phe-
nyl)piperazine-1-carboxylate (28 mg, 0.049 mmol) in DCM (1 mL) was
added 5 M HCl in iPrOH (49 .mu.L, 0.24 mmol). The reaction was
stirred at ambient temperature overnight and then vacuum filtered.
The isolated solids were washed with DCM and Et.sub.2O and air
dried to afford the title compound (19 mg, 86% yield). MS (apci)
m/z=384.1 (M+H).
Example 292
##STR00501##
[1059]
4-(4-(4-(2-methoxyacetyl)piperazin-1-yl)phenyl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1060] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (10 mg, 0.0219 mmol) in DCM
(0.1 mL) was treated with TEA (30.5 .mu.L, 0.219 mmol) and
2-methoxyacetyl chloride (4.76 mg, 0.0438 mmol). The resulting
reaction mixture was stirred at ambient temperature for 30 min,
then concentrated in vacuo and directly purified by reverse phase
chromatography (0-70% ACN/water) to afford the title compound (5.2
mg, 52.1% yield). MS (apci) m/z=456.1 (M+H).
Example 293
##STR00502##
[1061]
4-(4-(4-(2-hydroxyacetyl)piperazin-1-yl)phenyl)-6-(1-methyl-1H-pyra-
zol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile hydrochloride
[1062] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (35 mg, 0.077 mmol) in DCM
(0.5 mL) was treated with 2-chloro-2-oxoethyl acetate (31.41 mg,
0.23 mmol) and TEA (30.5 .mu.L, 0.219 mmol. The resulting reaction
mixture was stirred at ambient temperature for 30 min, then MeOH
(0.2 mL) and NaOH (383.46 .mu.L, 0.383 mmol) were added and the
reaction was stirred at ambient temperature overnight. The reaction
was quenched with water (1 mL) and extracted with several portions
of DCM in a PS frit. The DCM extracts were concentrated in vacuo
and the crude residue was dissolved in 1:1 DCM/MeOH (1 mL) and
treated with 5 M HCl in iPrOH (46 .mu.L, 0.23 mmol). The resulting
mixture was concentrated in vacuo and the residue was taken up in
DCM (2 mL) and sonicated. The suspension was vacuum filtered and
the solids were successively rinsed with DCM (2 mL) and Et.sub.2O
(3.times.2 mL) and then dried in vacuo to afford the title compound
(27 mg, 80% yield). MS (apci) m/z=442.0 (M+H).
Example 294
##STR00503##
[1063]
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-methyl-1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1064] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (12 mg, 0.026 mmol) in DCM
(1 mL) was treated with 3,3-dimethylbutanoyl chloride (11 mg, 0.079
mmol) and TEA (18 .mu.L, 0.13 mmol). The resulting reaction mixture
was stirred at ambient temperature for 1 h and then quenched with
water (1 mL) and extracted with several portions of DCM (3.times.5
mL) in a PS frit. The combined DCM extracts were concentrated in
vacuo and then taken up in MeOH (0.5 mL) and sonicated. The
resulting suspension was vacuum filtered and the solids were rinsed
with Et.sub.2O (3.times.2 mL) to afford the title compound (10 mg,
79% yield). MS (apci) m/z=482.2 (M+H).
[1065] The compounds in Table Z were prepared and purified
according to the method described for the synthesis of Example 294,
replacing 3,3-dimethylbutanoyl chloride for the appropriate acid
chloride starting material.
TABLE-US-00033 TABLE Z MS (apci) Ex# Structure Chemical Name m/z
295 ##STR00504## 4-(4-(4-acetylpiperazin- 1-yl)phenyl)-6-(1-
methl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
426.1 (M + H) 296 ##STR00505## 4-(4-(4-(2-dimethyl-
amino)acetyl)piperazin- 1-yl)phenyl)-6- (1-methyl-1H-pyrazol-
4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 469.1 (M + H)
Example 297
##STR00506##
[1066] 6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(4-(methyl
sulfonyl)piperazin-1-yl)phenyl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1067] To a solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile hydrochloride (6 mg, 0.014 mmol) in
DCM (0.2 mL) was added TEA (10 .mu.L, 0.071 mmol) followed by
methanesulfonyl chloride (29 .mu.L, 0.029 mmol). The mixture was
stirred at ambient temperature for 1 h, then concentrated in vacuo
and purified by reverse phase chromatography (0-70% ACN/water) to
provide the title compound (6.2 mg, 94% yield). MS (apci) m/z=462.1
(M+H).
Example 298
##STR00507##
[1068] Methyl
4-(4-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)phe-
nyl)piperazine-1-carboxylate
[1069]
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (10 mg, 0.022 mmol),
methyl carbonochloridate (6.2 mg, 0.066 mmol) and TEA (18 .mu.L,
0.13 mmol) were combined in DCM (0.1 mL) and stirred at ambient
temperature for 30 min. The reaction mixture was concentrated in
vacuo and purified by reverse phase chromatography (0-60%
ACN/water) to afford the title compound (5.1 mg, 53% yield). MS
(apci) m/z=442.2 (M+H).
Example 299
##STR00508##
[1070]
4-(4-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)phenyl)-N-methylpiperazine-1-sulfonamide
[1071] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (10 mg, 0.0219 mmol) in DCM
(0.2 mL) was treated with TEA (30.5 .mu.L, 0.219 mmol) and
methylsulfamoyl chloride (110 .mu.L, 0.110 mmol) and stirred at
ambient temperature overnight. The resulting mixture was
concentrated in vacuo and purified by reverse phase chromatography
(0-70% ACN/water) to afford the title compound (1.2 mg, 12% yield).
MS (apci) m/z=477.2 (M+H).
Example 300
##STR00509##
[1072] tert-butyl
4-(4-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)phe-
nyl)piperidine-1-carboxylate
[1073] A solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 30 mg, 0.0808 mmol) in
dioxane (0.8 mL) was treated with tert-butyl
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidine-1-car-
boxylate (Intermediate R10; 46.9 mg, 0.121 mmol), 2 M
Na.sub.2CO.sub.3(aq) (202 .mu.L, 0.404 mmol) and
Pd(PPh.sub.3).sub.4 (4.67 mg, 0.00404 mmol) in a pressure tube. The
resulting reaction mixture was sparged with nitrogen, sealed and
heated at 90.degree. C. overnight. The reaction mixture was cooled
to ambient temperature and then diluted with water (5 mL) and
stirred well. The resulting suspension was diluted with additional
water (3 mL) and the aqueous suspension was extracted with DCM
(2.times.10 mL). The combined organic extracts were concentrated in
vacuo and purified by silica chromatography (25-100% EtOAc/hexanes)
to afford the title compound (23.4 mg, 60% yield). MS (apci)
m/z=383.1 (M+H-Boc). .sup.1H NMR (CDCl.sub.3) .delta. 8.65 (d, 1H),
8.26 (s, 1H), 7.80 (s, 1H), 7.69 (s, 1H), 7.53 (m, 2H), 7.45 (d,
1H), 7.38 (m, 2H), 4.28 (m, 2H), 4.00 (s, 3H), 2.83 (m, 2H), 2.76
(m, 1H), 1.91 (m, 2H), 1.69 (m, 2H), 1.49 (s, 9H).
Example 301
##STR00510##
[1074]
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperidin-4-yl)phenyl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride
[1075] To a suspension of tert-butyl
4-(4-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)phe-
nyl)piperidine-1-carboxylate (22.3 mg, 0.0462 mmol) in EtOH (0.2
mL) was added 5 M HCl in iPrOH (305 .mu.L, 1.52 mmol). After
stirring at ambient temperature 2 h, the resulting suspension was
vacuum filtered, and the solids were rinsed with Et.sub.2O (2 mL)
and dried in vacuo to afford the title compound (17.0 mg, 81%
yield). MS (apci) m/z=383.1 (M+H).
Example 302
##STR00511##
[1076]
4-(4-(1-(3,3-dimethylbutanoyl)piperidin-4-yl)phenyl)-6-(1-methyl-1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1077] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperidin-4-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (8 mg, 0.0176 mmol) in DCM
(0.4 mL) was treated with 3,3-dimethylbutanoyl chloride (3.68
.mu.L, 0.0264 mmol) and DIEA (12.2 .mu.L, 0.0703 mmol), and the
resulting solution was stirred at ambient temperature for
overnight. The reaction was quenched with MeOH (0.2 mL), then
partially concentrated in vacuo and purified by silica
chromatography (0-100% EtOAc/hexanes) to afford the title compound
(6.5 mg, 77% yield). MS (apci) m/z=481.2 (M+H).
Example 303
##STR00512##
[1078]
4-(4-(1-(2-(dimethylamino)acetyl)piperidin-4-yl)phenyl)-6-(1-methyl-
-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1079] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperidin-4-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (8 mg, 0.018 mmol) in DCM
(0.4 mL) was treated with 2-(dimethylamino)acetyl chloride
hydrochloride (4.2 mg, 0.026 mmol) and DIEA (18 .mu.L, 0.11 mmol),
and the resulting solution was stirred at ambient temperature
overnight. The reaction was quenched with MeOH (0.2 mL), partially
concentrated in vacuo, and then purified by reverse phase
chromatography (5-75% MeCN/water) to afford the title compound (2.4
mg, 29% yield). MS (apci) m/z=468.1 (M+H).
Example 304
##STR00513##
[1080]
(S)-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-(2-hy-
droxypropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1081] A solution of
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1,5--
a]pyridin-6-yl trifluoromethanesulfonate (Intermediate P16; 0.030
g, 0.055 mmol) in dioxane (4 mL) was treated with
(S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)pr-
opan-2-ol (0.021 g, 0.082 mmol) and 2 M K.sub.2CO.sub.3(aq) (0.055
mL, 0.11 mmol). The resulting reaction mixture was purged with
N.sub.2 for 5 min, and then X-Phos (0.0052 g, 0.011 mmol) and
Pd.sub.2(dba).sub.3 (0.0025 g, 0.0027 mmol) were added to the
reaction mixture. The mixture was purged with nitrogen for an
additional 5 min then heated at 80.degree. C. under a nitrogen
atmosphere overnight. The reaction mixture was cooled to ambient
temperature, then diluted with water (5 mL) and extracted with
EtOAc (3.times.5 mL). The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, concentrated in vacuo and
purified by silica chromatography (0-50% 20% MeOH/DCM in EtOAc) to
afford the title compound (5.4 mg, 18% yield). MS (apci) m/z=526.2
(M+H).
Example 305
##STR00514##
[1082]
(R)-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-(2-hy-
droxypropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1083] A solution of
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1,5--
a]pyridin-6-yl trifluoromethanesulfonate (0.030 g, 0.0546 mmol) in
dioxane (4 mL) was treated with
(R)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)pr-
opan-2-ol (0.0206 g, 0.0819 mmol) and 2 M K.sub.2CO.sub.3(aq)
(0.0546 mL, 0.109 mmol). The resulting reaction mixture was purged
with nitrogen for 5 min, and then X-Phos (0.00520 g, 0.0109 mmol)
and Pd.sub.2(dba).sub.3 (0.00250 g, 0.00273 mmol) were added. The
reaction mixture was purged with nitrogen for an additional 5 min
and then heated overnight at 80.degree. C. under a nitrogen
atmosphere. The reaction mixture was cooled to ambient temperature,
then diluted with water (5 mL) and extracted with EtOAc (3.times.5
mL). The combined organic extracts were dried (Na.sub.2SO.sub.4),
filtered, concentrated and purified by silica chromatography (0-50%
of 20% MeOH/DCM in EtOAc) to afford the title compound (0.0161 g,
54% yield). MS (apci) m/z=526.2 (M+H).
Example 306
##STR00515##
[1084]
(R)-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-(3-hy-
droxy-2-methylpropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
Step 1: Preparation of
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1H-pyrazol-4-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile
[1085] A solution of
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1,5--
a]pyridin-6-yl trifluoromethanesulfonate (Intermediate P16; 0.200
g, 0.3639 mmol) in dioxane (15 mL) was treated with tert-butyl
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole-1-carboxylate
(0.1606 g, 0.5459 mmol) and 2 M K.sub.2CO.sub.3(aq) (0.3639 mL,
0.7278 mmol). The resulting reaction mixture was purged with
nitrogen for 5 min, and then X-Phos (0.03470 g, 0.07278 mmol) and
Pd.sub.2(dba).sub.3 (0.01666 g, 0.01820 mmol) were added. The
reaction mixture was purged with nitrogen for an additional 5 min
and then heated overnight at 80.degree. C. under a nitrogen
atmosphere. The reaction mixture was cooled to ambient temperature
and then diluted with water (20 mL) and extracted with EtOAc
(3.times.50 mL). The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The
crude residue was purified by silica chromatography (0-50% of 20%
MeOH/DCM in EtOAc). The fractions containing the desired mass for
tert-butyl
4-(3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1-
,5-a]pyridin-6-yl)-1H-pyrazole-1-carboxylate (by LCMS) were
combined, concentrated in vacuo, dissolved in 20% MeOH/DCM (25 mL),
treated with 4 N HCl in dioxane (5 mL) and stirred overnight. The
reaction mixture was quenched with saturated NaHCO.sub.3(aq) and
extracted with 10% MeOH/DCM (3.times.50 mL). The organic and
aqueous extracts were treated separately. The organic extracts were
combined, dried over anhydrous Na.sub.2SO.sub.4, filtered and
reserved. The aqueous layer was filtered and the insoluble solid
collected was separately washed with MeOH (50 mL) and DCM (50 mL).
The organic filtrates from both the original extraction and the
solid wash were combined and concentrated in vacuo to afford the
title compound (0.1663 g, 98% yield). MS (apci) m/z=468.1
(M+H).
Step 2: Preparation of
(R)-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-(3-hydroxy--
2-methylpropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1086] A solution of
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1H-pyrazol-4-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile (0.030 g, 0.06416 mmol) and
(S)-3-bromo-2-methylpropan-1-ol (0.0134 mL, 0.1283 mmol) in DMF
(1.283 mL, 0.0645 mmol) was treated with Cs.sub.2CO.sub.3 (0.04181
g, 0.128 mmol). The resulting mixture was heated at 80.degree. C.
and stirred overnight. After cooling to ambient temperature, the
reaction mixture was diluted with water (10 mL), pH adjusted to 8
with 1 N HCl.sub.(aq), then extracted with EtOAc (3.times.15 mL).
The combined organic extracts were washed with brine, dried
(Na.sub.2SO.sub.4), filtered, concentrated and purified by silica
chromatography (0-50% of 20% MeOH/DCM in EtOAc) to afford the title
compound (0.0131 g, 38% yield). MS (apci) m/z=540.2 (M+H).
Example 307
##STR00516##
[1087]
(S)-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-(3-hy-
droxy-2-methylpropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1088] A solution of
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1H-pyrazol-4-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile (0.030 g, 0.0645 mmol) and
(R)-3-bromo-2-methylpropan-1-ol (0.01344 mL, 0.1283 mmol) in DMF
(1.283 mL, 0.0645 mmol) was treated with Cs.sub.2CO.sub.3 (0.04181
g, 0.128 mmol). The resulting mixture was heated at 80.degree. C.
and stirred overnight. After cooling to ambient temperature, the
reaction mixture was diluted with water (10 mL), the pH adjusted to
8 with 1 N HCl.sub.(aq), and extracted with EtOAc (3.times.15 mL).
The combined organic extracts were washed with brine, dried
(Na.sub.2SO.sub.4), filtered, concentrated and purified by silica
chromatography (0-50% of 20% MeOH/DCM in EtOAc) to afford the title
compound (0.0133 g, 38% yield). MS (apci) m/z=540.2 (M+H).
Example 308
##STR00517##
[1089]
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-methyl-1H-
-imidazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1090] In a pressure tube,
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1,5--
a]pyridin-6-yl trifluoromethanesulfonate (20 mg, 0.036 mmol),
1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazole
(15 mg, 0.073 mmol), PdCl.sub.2(dppf).CH.sub.2Cl.sub.2 (3.0 mg,
0.0036 mmol) and Cs.sub.2CO.sub.3 (59 mg, 0.18 mmol) were combined
in dioxane (0.2 mL), sparged with N.sub.2, sealed and heated at
100.degree. C. for 3 h. After cooling to ambient temperature, the
reaction mixture was diluted with water (1 mL) and extracted with
DCM (3.times.5 mL). The combined organic extracts were concentrated
in vacuo and purified by reverse phase chromatography (0-75%
ACN/water with 0.1% HCl) to afford the title compound (2 mg, 11%
yield). MS (apci) m/z=482.3 (M+H).
Example 309
##STR00518##
[1091]
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(1-methyl-1H-
-pyrazol-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1092] In a pressure tube,
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1,5--
a]pyridin-6-yl trifluoromethanesulfonate (Intermediate P16; 20 mg,
0.036 mmol),
1-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazo-
le (15 mg, 0.073 mmol), Pd(PPh.sub.3).sub.4 (4.2 mg, 0.0036 mmol)
and 2 M Na.sub.2CO.sub.3(aq) (91 .mu.L, 0.18 mmol) were combined in
dioxane (0.2 mL), sparged with N.sub.2, sealed and heated at
100.degree. C. for 3 h. After cooling to ambient temperature and
stirring overnight, the reaction mixture was diluted with water (1
mL) and extracted with DCM (3.times.5 mL). The combined organic
extracts were concentrated in vacuo and purified by reverse phase
chromatography (0-95% ACN/water) to afford the title compound (4.6
mg, 26% yield). MS (apci) m/z=482.1 (M+H).
Example 310
##STR00519##
[1093]
4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)-6-(5-methyl-1H-
-pyrazol-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1094] In a pressure tube,
3-cyano-4-(4-(4-(3,3-dimethylbutanoyl)piperazin-1-yl)phenyl)pyrazolo[1,5--
a]pyridin-6-yl trifluoromethanesulfonate (Intermediate P16; 20 mg,
0.036 mmol),
5-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazo-
le (15 mg, 0.073 mmol), Pd(PPh.sub.3).sub.4 (4.2 mg, 0.0036 mmol)
and 2 M Na.sub.2CO.sub.3(aq) (91 .mu.L, 0.18 mmol) were combined in
dioxane (0.2 mL). The reaction mixture was sparged with N.sub.2,
sealed and heated at 100.degree. C. for 3 h and then stirred at
ambient temperature overnight. The reaction mixture was diluted
with water (1 mL) and extracted with DCM (3.times.5 mL). The
combined organic extracts were concentrated in vacuo then
triturated with MeOH (0.2 mL). The resulting suspension was vacuum
filtered, and the isolated solids were rinsed with Et.sub.2O and
air dried to afford the title compound (7 mg, 40% yield). MS (apci)
m/z=482.1 (M+H).
Example 311
##STR00520##
[1095] tert-Butyl
4-(5-(6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyridin-2-y-
l)piperazine-1-carboxylate
[1096] In a pressure tube,
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P7; 750 mg, 2.17 mmol),
(6-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-3-yl)boronic acid
(998 mg, 3.25 mmol), Pd(PPh.sub.3).sub.4 (250 mg, 0.217 mmol) and 2
M Na.sub.2CO.sub.3(aq) (5.42 mL, 10.8 mmol) were combined in
dioxane (20 mL). The resulting reaction mixture was sparged with
nitrogen, then sealed and heated at 100.degree. C. overnight. After
cooling to ambient temperature the reaction mixture was diluted
with water (10 mL) and extracted with several portions of DCM in a
PS frit. The combined organic extracts were concentrated in vacuo
and purified by silica chromatography (10-100% EtOAc/hexanes) to
afford the title compound (826 mg, 83% yield). MS (apci) m/z=460.1
(M+H).
Example 312
##STR00521##
[1097]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine dihydrochloride
[1098] To a solution of tert-butyl
4-(5-(6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyridin-2-y-
l)piperazine-1-carboxylate (820 mg, 1.78 mmol) in DCM (5 mL) was
added 5 M HCl in iPrOH (1784 .mu.L, 8.92 mmol). The reaction was
stirred at ambient temperature overnight. The resulting suspension
was vacuum filtered and the solids were washed with Et.sub.2O
(2.times.5 mL) then air dried to afford the title compound (640 mg,
99% yield). MS (apci) m/z=360.1 (M+H).
Example 313
##STR00522##
[1099]
(R)-2-hydroxy-1-(4-(5-(6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]p-
yridin-4-yl)pyridin-2-yl)piperazin-1-yl)-2-phenylethanone
[1100] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine dihydrochloride (24.6 mg, 0.0568984 mmol) in DCM (1.2
mL) was treated with D-(-)-Mandelic acid (12.99 mg, 0.08535 mmol),
HATU (21.63 mg, 0.05690 mmol) and DIEA (99.11 .mu.L, 0.5690 mmol).
The resulting reaction mixture was stirred at ambient temperature
overnight, then concentrated in vacuo and purified by silica
chromatography (10-80% DCM/acetone) to afford the title compound
(13.2 mg, 47% yield). MS (apci) m/z=494.1 (M+H).
[1101] The compounds in Table AA were prepared in a similar fashion
as described for the synthesis of Example 313, replacing
D-(-)-Mandelic acid with the appropriate acid starting
material.
TABLE-US-00034 TABLE AA MS (apci) Ex # Structure Chemical Name m/z
314 ##STR00523## 2-(2,6- difluorophenyl)-1-(4- (5-(6-(1-methyl-1H-
pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4- yl)pyridin-2-
yl)piperazin-1- yl)ethanone 514.1 (M + H) 315 ##STR00524## (2,6-
difluorophenyl)(4-(5- (6-(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4- yl)pyridin-2- yl)piperazin-1- yl)methanone 500.1 (M +
H) 316 ##STR00525## (R)-2-hydroxy-1-(4- (5-(6-(1-methyl-1H-
pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4- yl)pyridin-2-
yl)piperazin-1-yl)-2- (p-tolyl)ethanone 508.1 (M + H) 317
##STR00526## 2-(2,4- difluorophenyl)-2- hydroxy-1-(4-(5-(6-
(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-
yl)pyridin-2- yl)piperazin-1- yl)ethanone 530.1 (M + H) 318
##STR00527## 2-(2,6- difluorophenyl)-2- hydroxy-1-(4-(5-(6-
(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-
yl)pyridin-2- yl)piperazin-1- yl)ethanone 530.1 (M + H) 319
##STR00528## 2-(3,5- difluorophenyl)-2- hydroxy-1-(4-(5-(6-
(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-
yl)pyridin-2- yl)piperazin-1- yl)ethanone 530.1 (M + H)
Example 320
##STR00529##
[1102]
(R)-2-(2-chlorophenyl)-2-hydroxy-1-(4-(5-(6-(1-methyl-1H-pyrazol-4--
yl)pyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-1-yl)ethanone
[1103] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine dihydrochloride (17.4 mg, 0.040 mmol) in DMF (1.2 mL)
was treated with (R)-(-)-2-chloromandelic acid (9.0 mg, 0.048
mmol), HATU (18.4 mg, 0.048 mmol) and DIEA (70 .mu.L, 0.40 mmol).
The resulting reaction mixture was stirred at ambient temperature
overnight and then diluted with EtOAc (10 mL). The reaction mixture
was washed with water (2.times.10 mL) and brine (10 mL), and the
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, concentrated in vacuo and purified by
silica chromatography (10-80% DCM/acetone) to afford the title
compound (8.6 mg, 40% yield). MS (apci) m/z=528.1 (M+H).
[1104] The compounds in Table BB were prepared according the method
described for the synthesis of Example 320, replacing
D-(-)-Mandelic acid with the appropriate acid starting
material.
TABLE-US-00035 TABLE BB MS (apci) Ex # Structure Chemical Name m/z
321 ##STR00530## (R)-2-(2-fluorophenyl)- 2-hydroxy-1-(4-(5-(6-
(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-
2-yl)piperazin-1- yl)ethanone 512.2 (M + H) 322 ##STR00531##
(R)-2-(3-chlorophenyl)- 2-hydroxy-1-(4-(5-(6- (1-methyl-1H-pyrazol-
4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)piperazin-1-
yl)ethanone 528.1 (M + H)
Example 323
##STR00532##
[1105]
N-methyl-4-(5-(6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-
-yl)pyridin-2-yl)-N-phenylpiperazine-1-carboxamide
[1106] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine dihydrochloride (50.4 mg, 0.117 mmol) and DIEA (122
.mu.L, 0.699 mmol) in DriSolv.RTM. DCM (0.5 mL) was cooled to
0.degree. C. and then added dropwise to a 0 OC solution of
triphosgene (13.8 mg, 0.0466 mmol) in DriSolv.RTM. DCM (1.1 mL).
After stirring the reaction mixture for 1 h at 0.degree. C.,
N-methylaniline (13.9 .mu.L, 0.128 mmol) was added in one portion,
and the reaction was stirred at ambient temperature overnight. The
reaction mixture was diluted with DCM and washed with saturated
NaHCO.sub.3(aq). The combined organic extracts were dried
(Na.sub.2SO.sub.4), filtered, concentrated and purified by silica
chromatography (10-80% DCM/acetone) to afford the title compound
(13.1 mg, 23% yield). MS (apci) m/z=493.1 (M+H).
Example 324
##STR00533##
[1107]
(R)-2-(4-(5-(6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-y-
l)pyridin-2-yl)piperazin-1-yl)-1-phenylethanol
[1108] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine (22.1 mg, 0.0615 mmol) and (R)-(+)-Styrene oxide
(8.43 .mu.L, 0.0738 mmol) in methanol (1.2 mL) was heated at
75.degree. C. in a sealed tube overnight. The reaction mixture was
subsequently cooled to ambient temperature and directly purified by
silica chromatography (10-90% DCM/acetone) to afford the title
compound (7.8 mg, 27% yield). MS (apci) m/z=480.1 (M+H).
Example 325
##STR00534##
[1109] tert-butyl
4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperazine-1-carboxylate
[1110] In a pressure tube, a solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P8; 150 mg, 0.394 mmol) in
dioxane (3 mL) was treated with tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine-
-1-carboxylate (230 mg, 0.591 mmol), 2 M Na.sub.2CO.sub.3(aq) (985
.mu.L, 1.97 mmol) and Pd(PPh.sub.3).sub.4 (22.8 mg, 0.0197 mmol).
The reaction mixture was purged with nitrogen, sealed and heated at
90.degree. C. overnight. After cooling to ambient temperature, the
reaction mixture was diluted with H.sub.2O (10 mL) and extracted
with DCM (3.times.15 mL). The combined organic extracts were dried
over anhydrous MgSO.sub.4, vacuum filtered, and concentrated in
vacuo. The crude residue was purified by silica chromatography
(25-100% EtOAc/hexanes) to afford the title compound as a solid
contaminated with triphenylphosphine oxide (131 mg). That solid
mixture was suspended in MTBE (3 mL), sonicated then vacuum
filtered to cleanly provide the title compound (75.7 mg, 39%
yield). MS (apci) m/z=494.0 (M+H).
Example 326
##STR00535##
[1111]
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin--
3-yl)pyrazolo[1,5-a]pyridine dihydrochloride
[1112] Tert-butyl
4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperazine-1-carboxylate (70 mg, 0.14 mmol) was
suspended in EtOH (0.5 mL) and DCM (0.5 mL) and then treated with 5
M HCl in iPrOH (0.5 mL, 2.8 mmol). The reaction mixture was stirred
at ambient temperature overnight. The resulting suspension was
concentrated in vacuo. The solids were sonicated in Et.sub.2O and
then dried in vacuo to cleanly afford the title compound (75 mg,
quantitative yield). MS (apci) m/z=394.0 (M+H).
Example 327
##STR00536##
[1113]
(R)-1-(4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperazin-1-yl)-2-hydroxy-2-phenylethanone
[1114] A solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine dihydrochloride (8.0 mg, 0.017 mmol) in DCM
(0.5 mL) was treated with D-(-)-Mandelic acid (3.13 mg, 0.0206
mmol), HATU (7.82 mg, 0.0206 mmol) and DIEA (29.85 .mu.L, 0.1714
mmol). The resulting reaction mixture was stirred at ambient
temperature overnight and then directly purified by silica
chromatography (5-60% DCM/acetone) to afford the title compound
(3.9 mg, 43% yield). MS (apci) m/z=528.1 (M+H).
Example 328
##STR00537##
[1115]
1-(4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)piperazin-1-yl)-2-(dimethylamino)ethanone
[1116] A solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine dihydrochloride (10 mg, 0.021 mmol) and
2-(dimethylamino)acetyl chloride hydrochloride (5.1 mg, 0.032 mmol)
in DCM (0.4 mL) was treated with DIEA (22 .mu.L, 0.13 mmol) and the
reaction mixture was stirred at ambient temperature overnight. The
reaction was quenched with the addition of MeOH (0.2 mL), partially
concentrated in vacuo and then purified by reverse phase
chromatography (5-75% ACN/water) to afford the title compound (6.2
mg, 60% yield). MS (apci) m/z=479.0 (M+H).
Example 329
##STR00538##
[1117]
1-(4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)piperazin-1-yl)-2-methoxyethanone
[1118] A solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine dihydrochloride (10 mg, 0.021 mmol) in DCM
(0.4 mL) was treated with a 10 M solution of 2-methoxyacetyl
chloride in DCM (2.9 .mu.L, 0.032 mmol) and DIEA (19 .mu.L, 0.11
mmol) and the reaction mixture was stirred at ambient temperature
overnight. The reaction was quenched with the addition of MeOH (0.2
mL). The resulting suspension was sonicated and vacuum filtered,
rinsing the solids collected with Et.sub.2O (2.times.1 mL), to
afford the title compound (7.2 mg, 72% yield). MS (apci) m/z=466.0
(M+H).
[1119] The compounds in Table CC were prepared and purified
according the method described for the synthesis of Example 329,
replacing 2-methoxyacetyl chloride for the appropriate acid
chloride starting material. Sonication was performed using either
MeOH or Et.sub.2O.
TABLE-US-00036 TABLE CC MS (apci) Ex # Structure Chemical Name m/z
330 ##STR00539## 1-(4-(5-(3-chloro-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin- 2-yl)piperazin-1-
yl)ethanone 436.1 (M + H) 331 ##STR00540## 1-(4-(5-(3-chloro-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-
2-yl)piperazin-1-yl)-3,3- dimethylbutan-1-one 492.1 (M + H)
Example 332
##STR00541##
[1120] 3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(methyl
sulfonyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine
[1121] A solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine hydrochloride (8.9 mg, 0.021 mmol) in DCM (1
mL) was treated pyridine (8.4 .mu.L, 0.10 mmol) and methanesulfonic
anhydride (4.3 mg, 0.025 mmol) and the reaction mixture was stirred
at ambient temperature for 6 d. Additional pyridine (0.1 mL, 1.19
mmol) and methanesulfonic anhydride (20 mg, 0.115 mmol) were added
and the reaction mixture was stirred for an additional 18 h. The
crude reaction mixture was purified by silica chromatography
(25-100% EtOAc/hexanes) to cleanly provide the title compound (1.5
mg, 15% yield). MS (apci) m/z=472.0 (M+H).
Example 333
##STR00542##
[1122]
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-methylpiperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine
[1123] In a pressure tube, a solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P8; 15 mg, 0.039 mmol) in
dioxane (0.5 mL) was treated with
(6-(4-methylpiperazin-1-yl)pyridin-3-yl)boronic acid (13 mg, 0.059
mmol), 2 M Na.sub.2CO.sub.3(aq) (98 .mu.L, 0.20 mmol) and
Pd(PPh.sub.3).sub.4 (2.3 mg, 0.0020 mmol). The reaction mixture was
purged with nitrogen, sealed and then heated at 90.degree. C.
overnight. After cooling to ambient temperature, the reaction
mixture was diluted with water (25 mL) and extracted with DCM (25
mL) and then with a 5:95 solution of MeOH/DCM (2.times.25 mL). The
combined organic extracts were dried over anhydrous MgSO.sub.4,
vacuum filtered, and concentrated in vacuo. The crude residue was
purified directly by reverse phase chromatography (5-60% ACN/water)
to afford the title compound as a solid contaminated with
triphenylphosphine oxide (9.0 mg). That material was purified by
preparative thin layer silica chromatography (10:90 0.2 M NH.sub.3
in MeOH:DCM). The lower band was isolated, suspended in 10:90
MeOH/DCM with NH.sub.4OH, and then filtered. The filtrate was
concentrated in vacuo to cleanly provide the title compound (7.1
mg, 44% yield). MS (apci) m/z=408.1 (M+H).
Example 333a
##STR00543##
[1124]
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-methylpiperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine dihydrochloride
[1125] In a pressure tube a solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P8; 95 mg, 0.250 mmol) in
dioxane (3 mL) was treated with
(6-(4-methylpiperazin-1-yl)pyridin-3-yl)boronic acid (82.7 mg,
0.374 mmol), 2 M Na.sub.2CO.sub.3(aq) (624 .mu.L, 1.25 mmol) and
Pd(PPh.sub.3).sub.4 (14.4 mg, 0.0125 mmol). The reaction mixture
was purged with nitrogen, sealed and then heated at 90.degree. C.
overnight. After cooling to ambient temperature, the reaction
mixture was diluted with water (25 mL) and extracted with a 10:90
solution of MeOH/DCM (3.times.25 mL). The combined organic extracts
were dried over anhydrous MgSO.sub.4, filtered and concentrated in
vacuo. The crude residue was purified by reverse phase
chromatography (5-60% ACN/water with 0.1 N HCl). The product was
triturated in Et.sub.2O (5 mL) and then filtered. The isolated
solids were rinsed with Et.sub.2O (3 mL) and dried in vacuo to
afford the title compound (69.3 mg, 58% yield). MS (apci) m/z=408.0
(M+H).
Example 334
##STR00544##
[1126] tert-butyl
8-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)-3,8-diazabicyclo[3.2.1]octane-3-carboxylate
[1127] In a pressure tube a solution of
3-chloro-4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine (Intermediate P9; 8 mg, 0.024 mmol) and tert-butyl
3,8-diazabicyclo[3.2.1]octane-8-carboxylate hydrochloride (52 mg,
0.24 mmol) in DMSO (3 mL) was heated at 150.degree. C. for 2 d. The
reaction mixture was cooled to ambient temperature and then
directly purified by reverse phase chromatography (5-95% ACN/water)
to afford the title compound (8.0 mg, 63% yield). MS (apci)
m/z=520.2 (M+H).
Example 335
##STR00545##
[1128]
4-(6-(3,8-diazabicyclo[3.2.1]octan-8-yl)pyridin-3-yl)-3-chloro-6-(1-
-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine dihydrochloride
[1129] A mixture of t-Butyl
8-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)-3,8-diazabicyclo[3.2.1]octane-3-carboxylate (Example
334, 7.3 mg, 0.0140 mmol) in 5 M HCl in iPrOH (562 .mu.L, 2.81
mmol) was stirred at ambient temperature for 1 h and then
concentrated in vacuo to afford the title compound (6.2 mg, 90%
yield). MS (apci) m/z=420.1 (M+H).
Example 336
##STR00546##
[1130]
1-(8-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-3,8-diazabicyclo[3.2.1]octan-3-yl)-2-(dimethylamino)e-
thanone
[1131] A solution of
4-(6-(3,8-diazabicyclo[3.2.1]octan-8-yl)pyridin-3-yl)-3-chloro-6-(1-methy-
l-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine dihydrochloride (5 mg,
0.010 mmol) and 2-(dimethylamino)acetyl chloride hydrochloride (2.4
mg, 0.015 mmol) in DCM (0.4 mL) was treated with DIEA (11 .mu.L,
0.061 mmol) and the resulting solution was stirred at ambient
temperature overnight. The reaction was quenched with the addition
of MeOH (0.2 mL), concentrated in vacuo and purified by reverse
phase chromatography (5-75% ACN/water) to afford the title compound
(2.1 mg, 12% yield). MS (apci) m/z=505.1 (M+H).
Example 337
##STR00547##
[1132] tert-butyl
3-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate
[1133] In a microwave vial a solution of
3-chloro-4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine (Intermediate P9; 5 mg, 0.015 mmol) and tert-butyl
3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (9.1 mg, 0.046 mmol)
in DMSO (0.2 mL) was subjected to microwave irradiation at
130.degree. C. for 5 h and then at 150.degree. C. for 6 h. The
reaction mixture was cooled to ambient temperature and then
directly purified by reverse phase chromatography (5-95% ACN/water)
to afford the title compound (2.6 mg, 34% yield). .sup.1H NMR
(CDCl.sub.3) .delta. 8.51 (d, 1H), 8.34 (d, 1H), 7.88 (s, 1H), 7.76
(s, 1H), 7.65 (m, 2H), 7.12 (d, 1H), 6.62 (d, 1H), 4.33 (m, 2H),
4.20 (m, 2H), 3.98 (s, 3H), 3.55 (m, 2H), 1.45 (d, 2H), 1.38 (s,
9H).
Example 338
##STR00548##
[1134]
3-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-
-yl)pyridin-2-yl)-3,6-diazabicyclo[3.1.1]heptane
dihydrochloride
[1135] A mixture of t-Butyl
3-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (Example
337, 1.24 mg, 0.00245 mmol) in 5 M HCl in iPrOH (98.0 .mu.L, 0.490
mmol) was stirred at ambient temperature for 1 h and then
concentrated in vacuo to afford the title compound (0.98 mg, 84%
yield). MS (apci) m/z=406.0 (M+H).
Example 339
##STR00549##
[1136]
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(pyrrolidin-1-yl)pyridin-
-3-yl)pyrazolo[1,5-a]pyridine
[1137] In a pressure tube a solution of
3-chloro-4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine (Intermediate P9; 16 mg, 0.0488 mmol) and pyrrolidine
(40.8 .mu.L, 0.488 mmol) in DMA (0.5 mL) was heated at 110.degree.
C. overnight. The reaction mixture was cooled to ambient
temperature and then directly purified by reverse phase
chromatography (5-95% ACN/water containing 0.1% TFA) to afford the
title compound as a TFA salt (27 mg) which was subsequently
dissolved in MeOH and filtered through a basic resin (Stratospheres
SPE HCO3-MP resin, 100 mg, 0.18 mmol/g). The filtrate was
concentrated in vacuo to afford the title compound (13.3 mg, 72%
yield). MS (apci) m/z=379.0 (M+H).
Example 340
##STR00550##
[1138]
4-(6-(7-azabicyclo[2.2.1]heptan-7-yl)pyridin-3-yl)-3-chloro-6-(1-me-
thyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[1139] In a pressure tube a solution of
3-chloro-4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine (Intermediate P9; 10 mg, 0.031 mmol) and
7-azabicyclo[2.2.1]heptane hydrochloride (12 mg, 0.092 mmol) in DMA
(0.3 mL) was heated at 110.degree. C. overnight. Additional
7-azabicyclo[2.2.1]heptane hydrochloride (12 mg, 0.092 mmol) was
added along with DIEA (18 .mu.L, 0.15 mmol). The reaction mixture
was heated at 110.degree. C. for 7 d and then cooled to ambient
temperature. The reaction mixture was diluted with EtOAc (25 mL)
and washed with brine (2.times.25 mL). The combined organic
extracts were dried over anhydrous MgSO.sub.4, filtered,
concentrated and purified by reverse phase chromatography (5-95%
ACN/water) to afford the title compound (10 mg, 37% yield). MS
(apci) m/z=405.0 (M+H).
Example 341
##STR00551##
[1140]
4-(6-(4-(1-(4-chlorophenyl)cyclopropanecarbonyl)piperazin-1-yl)pyri-
din-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1141] 1-(4-chlorophenyl)cyclopropanecarboxylic acid (12.9 mg,
0.0656 mmol) and HATU (24.9 mg, 0.0656 mmol) were dissolved in DMA
(273 .mu.L) at room temperature. After 25 min,
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 25 mg,
0.0547 mmol) and DIEA (47.6 .mu.L, 0.273 mmol) were added
sequentially. The reaction mixture was stirred 18 h at room
temperature and then directly purified by C18 reverse phase
chromatography (5-85% ACN/water as the gradient eluent) to provide
the title compound (22.6 mg, 71% yield). MS (apci) m/z=563.3
(M+H).
[1142] The compounds in the Table FF were prepared according to the
method described for Example 341, replacing
1-(4-chlorophenyl)cyclopropanecarboxylic acid with the appropriate
carboxylic acid starting material. Reaction progression in each was
followed by LCMS, and reaction times were adjusted as necessary.
Products were purified as in Example 341 (except where noted),
utilizing the appropriate gradient eluent in chromatography to
cleanly afford the title compounds.
TABLE-US-00037 TABLE FF MS (apci) Ex # Structure Chemical Name m/z
342* ##STR00552## 6-(1-methyl-1H- pyrazol-4-yl)-4- (6-(4-(4-
phenyltetrahydro- 2H-pyran-4- carbonyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 573.3 (M + H) 343
##STR00553## 4-(6-(4-(1-(2,4- dichlorophenyl) cyclopropanecarbonyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 597.1 (M + H) 344
##STR00554## 4-(6-(4-(1-(4- methoxyphenyl) cyclopropanecarbonyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 559.2 (M + H) 345
##STR00555## 4-(6-(4-(1-(4- fluorophenyl) cyclopropanecarbonyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 547.2 (M + H) 346
##STR00556## 6-(1-methyl-1H- pyrazol-4-yl)-4- (6-(4-(1-
(trifluoromethyl) cyclopropanecarbonyl) piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 521.3 (M + H) 347
##STR00557## 4-(6-(4-(1- (hydroxymethyl) cyclopropanecarbonyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 483.3 (M + H) 348
##STR00558## 4-(6-(4-(1- cyano- cyclopropanecarbonyl) piperazin-
1-yl)pyridin-3- yl)-6-(1-methyl- 1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 478.3 (M + H) 349 ##STR00559##
4-(6-(4-(1-(3- fluorophenyl) cyclopropanecarbonyl) piperazin-1-
yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 547.2 (M + H) 350 ##STR00560##
6-(1-methyl-1H- pyrazol-4-yl)-4- (6-(4-(1-(pyrazin- 2-yl)
cyclopropanecarbonyl) piperazin- 1-yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 531.2 (M + H) 351 ##STR00561##
4-(6-(4-(2- (dimethylamino)- 2-(4- fluorophenyl)
acetyl)piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 564.2 (M + H) 352
##STR00562## 4-(6-(4-(3- methoxy-2,2- dimethylpropanoyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 499.2 (M + H) 353
##STR00563## 4-(6-(4-(1- (methoxymethyl) cyclopropanecarbonyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 497.2 (M + H) 354
##STR00564## 4-(6-(4-(1- (methoxymethyl) cyclobutanecarbonyl)
piperazin-1- yl)pyridin-3-yl)- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 511.2 (M + H) *Example
342: Instead of directly chromatographing the reaction mixture, it
was triturated with EtOAc and the title compound was isolated by
filtration, rinsing solids with EtOAc and Et.sub.2O and drying in
vacuo.
[1143] The compounds in Table GG were prepared according the method
described for the synthesis of Example 33, replacing
3-(dimethylamino)propanoic acid with the appropriate carboxylic
acid starting material. Reactions were monitored by LCMS, and
reaction times were adjusted as necessary. Products were purified
by reverse-phase preparative HPLC utilizing an appropriate gradient
eluent with 0.1 v/v % TFA to cleanly afford the title compounds as
TFA salts.
TABLE-US-00038 TABLE GG MS (apci) Ex # Structure Chemical Name m/z
355 ##STR00565## 6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(piperidine-
2-carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2-trifluoroacetate) 496.2 (M + H)
356 ##STR00566## 4-(6-(4-(1-(3- chlorophenyl)cyclopropane-
1-carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate
563.1 (M + H) 357 ##STR00567## 6-(1-methyl-1H-pyrazol-
4-yl)-4-(6-(4-(2-(4- (trifluoromethoxy)phenyl) acetyl)piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate 587.2 (M + H) 358 ##STR00568##
6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(2- morpholinobenzoyl)
piperazin-1-yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2-trifluoroacetate) 574.2 (M + H)
359 ##STR00569## 6-(1-methyl-1H-pyrazol-
4-yl)-4-(6-(4-(1-(pyridine- 2-yl)cyclopropane-1-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2-trifluoroacetate) 530.2 (M + H)
360 ##STR00570## 4-(6-(4-(2-(5- fluoropyridin-2-
yl)acetyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate) 522.2 (M + H) 361 ##STR00571##
6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(2-(4- methylpiperazin-1-
yl)acetyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile tris(2,2,2-trifluoroacetate) 525.2 (M +
H) 362 ##STR00572## 6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(2-
morpholinoacetyl)piperazin- 1-yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2-trifluoroacetate) 512.2 (M + H)
363 ##STR00573## 6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(2-
morpholino-2- phenylacetyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate) 588.2 (M + H) 364 ##STR00574##
4-(6-(4-(2-(diethylamino)- 2-phenylacetyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2-trifluoroacetate) 574.3 (M + H)
365 ##STR00575## 4-(6-(4-(2-(4- cyanophenyl)acetyl)piperazin-
1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 528.2 (M + H) 366
##STR00576## 4-(6-(4-(1-(2- methoxyethyl)-1H- pyrazole-3-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate) 537.2 (M + H) 367 ##STR00577##
6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(3-methyl-5-
propylisoxazole-4- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate
536.2 (M + H) 368 ##STR00578## 6-(1-methyl-1H-pyrazol-
4-yl)-4-(6-(4-(2-phenyl-2- (piperidin-1- yl)acetyl)piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate) 586.3 (M + H) 369 ##STR00579##
6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-(1-(pyridine-
3-yl)cyclopropane-1- carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate) 530.2 (M + H) 370 ##STR00580##
4-(6-(4-(5-cyclopropyl- 1H-pyrazole-3- carbonyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2-trifluoroacetate) 519.2 (M +
H)
Example 371
##STR00581##
[1144]
(S)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(3,3,3-trifluoro-2-methoxy-
-2-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-c-
arbonitrile
[1145] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 15 mg
0.033 mmol) in DMF (0.2 mL) was treated with TEA (14 .mu.L, 0.098
mmol) and (R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl chloride
(12 mg, 0.049 mmol). The reaction mixture was stirred for 1 h at
room temperature and then purified directly by C18 reverse phase
chromatography (0-60% ACN/water as the gradient eluent) to afford
the title compound (13 mg, 66% yield). MS (apci) m/z=601.1
(M+H).
Example 372
##STR00582##
[1146]
(R)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(3,3,3-trifluoro-2-methoxy-
-2-phenylpropanoyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-c-
arbonitrile
[1147] Using the procedure outlined for Example 371, replacing
(R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl chloride with
(S)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl chloride, the title
compound was cleanly isolated (16 mg, 61% yield) after purification
by C18 reverse phase chromatography (0-60% ACN/water as the
gradient eluent). MS (apci) m/z=601.2 (M+H).
Example 373
##STR00583##
[1148]
(R)-4-(6-(4-(3-hydroxy-2-phenylpropanol)piperazin-1-yl)pyridin-3-yl-
)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1149] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 50.3 mg,
0.110 mmol) in DCM (1.10 mL) was treated with
(R)-3-hydroxy-2-phenylpropanoic acid (Intermediate R12; 21.9 mg,
0.132 mmol), HATU (50.2 mg, 0.132 mmol) and DIEA (191.6 .mu.L, 1.10
mmol). The reaction was stirred overnight at room temperature, and
then directly purified by silica chromatography (10-90%
DCM/Acetone) to afford the title compound (32.0 mg, 55% yield). MS
(apci) m/z=533.2 (M+H).
Example 374
##STR00584##
[1150]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-((1-methylcyclopropyl)sulfonyl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1151] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 25 mg,
0.055 mmol), 1-methylcyclopropane-1-sulfonyl chloride (8.45 mg,
0.0547 mmol) and TEA (76 .mu.L, 0.55 mmol) in DMA (500 .mu.L) was
stirred 20 h at 70.degree. C. The crude reaction mixture was
purified directly by silica chromatography (0.2% MeOH/0.2%
NH.sub.4OH in DCM) to afford the title compound (8.5 mg, 31%
yield). MS (apci) m/z=503.2 (M+H).
Example 375
##STR00585##
[1152]
(S)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(3-phenylpyrrolidine-1-car-
bonyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1153] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 25 mg,
0.055 mmol) and DIEA (57 .mu.L, 0.33) mmol) in DriSolv.RTM. DCM
(164 .mu.L) was added dropwise to a 0 OC solution of triphosgene
(8.1 mg, 0.027 mmol) in DriSolv.RTM. DCM (273 .mu.L). After
stirring for 90 min at 0.degree. C., the reaction mixture was
treated with (S)-3-phenylpyrrolidine hydrochloride (15 mg, 0.082
mmol), then stirred for 48 h at room temperature. The resulting
mixture was purified directly by C18 reverse-phase chromatography
(5-75% ACN/water as the gradient eluent) to provide the title
compound (9.5 mg, 31% yield). MS (apci) m/z=558.2 (M+H).
[1154] The compounds in Table HH were prepared according to the
method described for the synthesis of Example 375, replacing
(S)-3-phenylpyrrolidine hydrochloride with the appropriate amine
starting material. Reactions were monitored by LCMS and reaction
times were adjusted as necessary. Products were purified by C18
reverse-phase chromatography utilizing an appropriate gradient
eluent to cleanly afford the title compound.
TABLE-US-00039 TABLE HH MS (apci) Ex # Structure Chemical Name m/z
376 ##STR00586## 4-(6-(4-(4- methoxypiperidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 526.2 (M + H) 377
##STR00587## N-butyl-4-(5-(3-cyano- 6-(1-methyl-1H- pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridine- 2-yl)-N-
phenylpiperazine-1- carboxamide 560.1 (M + H) 378 ##STR00588##
(R)-6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4- (3-phenylpyrrolidine-1-
carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3-
carbonitrile 558.2 (M + H) 379 ##STR00589## 6-(1-methyl-1H-
pyrazol-4-yl)-4-(6-(4- (3- morpholinopyrrolidine-
1-carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 567.2 (M + H) 380 ##STR00590##
4-(6-(4-(3- azabicyclo[3.1.0]hexane- 3-carbonyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 494.1 (M + H) 381 ##STR00591##
6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4- (octahydropyrrolo[1,2-
a]pyrazine-2- carbonyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 537.3 (M + H) 382 ##STR00592##
4-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridine- 2-yl)-N-(2- methoxyphenyl)-N-
methylpiperazine-1- carboxamide 548.3 (M + H) 383 ##STR00593##
4-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-4-yl)pyridin- 2-yl)-N-(4- methoxyphenyl)-N-
methylpiperazine-1- carboxamide 548.3 (M + H) 384 ##STR00594##
4-(6-(4-(6,6-dimethyl- 3- azabicyclo[3.1.0]hexane-
3-carbonyl)piperazin- 1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 522.4 (M + H) 385
##STR00595## 4-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridin-4-yl)pyridine- 2-yl)-N,N-bis(2-
methoxyethyl)piperazine- 1-carboxamide 544.2 (M + H)
[1155] The compounds in Table II were prepared according the method
described for the synthesis of Example 130, replacing
2-methoxy-N-methyl-ethanamine with the appropriate amine starting
material. Reactions were monitored by LCMS, and reaction times were
adjusted as necessary. Products were purified by reverse-phase
preparative HPLC utilizing an appropriate gradient eluent to
cleanly afford the title compounds.
TABLE-US-00040 TABLE II MS (apci) Ex # Structure Chemical Name m/z
386 ##STR00596## 4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 4-yl)pyridin-2-yl)-N- cycopropyl-N-
methylpiperazine-1- carboxamide 2,2,2- trifluoroacetate 482.2 (M +
H) 387 ##STR00597## 4-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N-
methylpiperazine-1- carboxamide 442.1 (M + H)
Example 388
##STR00598##
[1156]
4-(6-(4-(3-cyclopropylpyrrolidine-1-carbonyl)piperazin-1-yl)pyridin-
-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of 4-nitrophenyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1157] A room temperature suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 100 mg,
0.219 mmol) in DMA (2 mL) was treated sequentially with DIEA (114
.mu.L, 0.656 mmol) and 4-nitrophenyl carbonochloridate (66.1 mg,
0.328 mmol). The mixture was stirred at room temperature for 4 h,
at which point LCMS indicated that the title compound had formed as
the major product, MS (apci) m/z=550 (M+H). The reaction mixture
was divided into 6 equal fractions, and one fraction was used
directly in Step 2. The remaining five parts were reserved, and
used in the preparation of each of the compounds listed in Table
JJ.
Step 2: Preparation of
4-(6-(4-(3-cyclopropylpyrrolidine-1-carbonyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1158] A room temperature solution of 3-cyclopropylpyrrolidine (6.1
mg, 0.055 mmol) in DMA (0.1 mL) and DIEA (19 .mu.L, 0.11 mmol) was
treated with a suspension of 4-nitrophenyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idine-2-yl)piperazine-1-carboxylate (1/6th of the suspension from
Step 1; about 20 mg, 0.036 mmol) in DIEA/DMA (about 0.35 mL, about
0.33 M). The resulting mixture was stirred for 16 h at 80.degree.
C. The reaction mixture was cooled to room temperature, diluted
with water (1 mL), and then filtered. The solid filter cake was
rinsed with water, then dissolved in ACN and purified by C18
reverse-phase chromatography (5-90% ACN/water as the gradient
eluent) to cleanly afford the title compound (5.6 mg, 29% yield).
MS (apci) m/z=522.2 (M+H).
[1159] The compounds in Table JJ were prepared according the method
described in Step 2 in the synthesis of Example 388, replacing
3-cyclopropylpyrrolidine with the appropriate amine starting
material. Reactions were monitored by LCMS, and reaction times were
adjusted as necessary. Compounds were purified by C18 reverse-phase
chromatography utilizing an appropriate gradient eluent to cleanly
afford the title compound.
TABLE-US-00041 TABLE JJ MS (apci) Ex # Structure Chemical Name m/z
389 ##STR00599## 4-(6-(4-(3- ethylpyrrolidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 510.2 (M + H) 390
##STR00600## 4-(6-(4-(3- isopropylpyrrolidine-1-
carbonyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 524.2 (M + H) 391
##STR00601## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(3-
(trifluoromethyl)pyrrolidine- 1-carbonyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 550.2 (M + H)
Example 392
##STR00602##
[1160]
4-(6-(4-(2-isopropoxyethyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-
-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-3-carbonitrile
[1161] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.018 g,
0.0394 mmol) in dry DMF (0.3 mL) and TEA (54.9 .mu.L, 0.394 mmol)
was treated with 2-(2-bromoethoxy)propane (0.0197 g, 0.118 mmol).
The reaction mixture was stirred overnight at 75.degree. C., and
then additional 2-(2-bromoethoxy)propane (1 eq) and TEA (1 eq) were
added. The reaction mixture was allowed to stir 24 h at 75.degree.
C. After cooling to room temperature, the resulting reaction
mixture was directly purified by C18 reverse phase chromatography
(5-99% ACN/water as the gradient eluent) to afford the title
compound (7.4 mg, 41% yield). MS (apci) m/z=471.2 (M+H).
[1162] The compounds in Table KK were prepared according to the
method described for the synthesis of Example 392, using either DMF
or DMA as the reaction solvent, and replacing
2-(2-bromoethoxy)propane with the appropriate alkyl halide starting
materials. Reactions were monitored by LCMS, and reaction
times/temperatures were adjusted accordingly. In some cases, the
addition of extra equivalents of alkyl halide/TEA (1-5 eq) after 24
h at 75.degree. C. was required. Title compounds were cleanly
isolated following C18 reverse phase chromatography utilizing an
appropriate gradient eluent.
TABLE-US-00042 TABLE KK MS (apci) Ex # Structure Chemical Name m/z
393 ##STR00603## 4-(6-(4-isobutylpiperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 441.1 (M + H) 394
##STR00604## 4-(6-(4- (cyclopropylmethyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 439.2 (M + H) 395
##STR00605## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-(pyridine-2-
yl)ethyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 490.2 (M + H) 396 ##STR00606## 4-(6-(4-(2-
methoxyethyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
443.2 (M + H) 397 ##STR00607## 4-(6-(4-(2- ethoxyethyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 469.2 (M + H) 398
##STR00608## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-
(trifluoromethoxy)ethyl) piperazin-1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 497.1 (M + H) 399
##STR00609## 4-(6-(4-((6- methoxypyridin-2- yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 506.2 (M + H) 400
##STR00610## 4-(6-(4-((2- methoxypyridin-4- yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 506.2 (M + H) 401*
##STR00611## 4-(6-(4-((4,6- dimethylpyrimidin-2-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.2 (M + H) *Example
401: used only 1.5 eq of the alkyl halide
(2-(chloromethyl)-4,6-dimethylpyrimidine), 10 eq of TEA, and was
conducted at room temperature, but otherwise followed a similar
procedure.
Example 402
##STR00612##
[1163]
4-(6-(4-(1,1-dioxidotetrahydro-2H-thiopyran-4-yl)piperazin-1-yl)pyr-
idin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1164] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.0199 g,
0.0435 mmol) in dry DMF (1 mL) was treated with Cs.sub.2CO.sub.3
(0.0425 g, 0.131 mmol) and
4-bromotetrahydro-2H-thiopyran-1,1-dioxide (0.0185 g, 0.0870 mmol).
The resulting mixture was stirred for 4 h at 60.degree. C., then
overnight at 75.degree. C., and then additional
4-bromotetrahydro-2H-thiopyran 1,1-dioxide (20 mg, 0.939 mmol) and
Cs.sub.2CO.sub.3 (40 mg, 0.301 mmol) were added. After 3 d at
75.degree. C., this process was repeated, adding
4-bromotetrahydro-2H-thiopyran-1,1-dioxide (35 mg, 0.164 mmol) and
Cs.sub.2CO.sub.3 (60 mg, 0.451 mmol), then stirring for an
additional 24 h at 75.degree. C. The reaction mixture was purified
directly by C18 reverse phase chromatography (5-99% ACN/Water as
the gradient eluent) to afford the title compound (4.2 mg, 19%
yield). MS (apci) m/z=562.1 (M+2 Na).
Example 403
##STR00613##
[1165]
4-(6-(4-(2-(isopropylsulfonyl)ethyl)piperazin-1-yl)pyridin-3-yl)-6--
(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1166] A room temperature mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 25 mg,
0.055 mmol), 2-((2-chloroethyl)sulfonyl)propane (18.7 mg, 0.109
mmol) and TEA (76 .mu.L, 0.55 mmol) in dry DMA (500 .mu.L) was
stirred for 3 d at 70.degree. C. The reaction mixture was purified
directly by silica chromatography (2% MeOH! 0.02% NH.sub.4OH in DCM
as the eluent) to afford the title compound (8.6 mg, 30% yield). MS
(apci) m/z=519.2 (M+H).
[1167] The compounds in Table LL were prepared according to the
method described for the synthesis of Example 403, replacing
2-((2-chloroethyl)sulfonyl)propane with the appropriate alkyl
halide. Reactions were monitored for completion by LCMS, and
reaction times were adjusted accordingly. Title compounds were
cleanly isolated following silica chromatography (2% MeOH!0.02%
NH.sub.4OH in DCM as the eluent) unless otherwise noted.
TABLE-US-00043 TABLE LL MS (apci) Ex # Structure Chemical Name m/z
404* ##STR00614## 6-(1-methyl-1H-pyrazol-4-
yl)-4-(6-(4-((tetrahydro- 2H-pyran-2- yl)methyl)piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 483.3 (M +
H) 405** ##STR00615## 4-(6-(4-(3- methoxypropyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 457.2 (M + H) 406
##STR00616## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-
((tetrahydrofuran-3- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 469.2 (M + H) *isolated
following in vacuo removal of DMA followed by trituration with
EtOAc and filtration **4 eq of the alkyl halide was used
Example 407
##STR00617##
[1168]
4-(6-(4-(2-cyclopropoxyethyl)piperazin-1-yl)pyridin-3-yl)-6-(1-meth-
yl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1169] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 0.0185 g,
0.0404 mmol) in dry DMF (0.3 mL) was treated with TEA (56.3 .mu.L,
0.404 mmol) and (2-chloroethoxy)cyclopropane (0.0146 g, 0.121
mmol). The reaction mixture was stirred overnight at 75.degree. C.,
and then additional (2-chloroethoxy)cyclopropane (1 eq) and DMF
(0.2 mL) with KI (20.1 mg, 0.121 mmol) were added. The reaction was
allowed stir for 48 h at 75.degree. C., then cooled to room
temperature. The reaction mixture was purified directly by C18
reverse phase chromatography (5-80% ACN/water as the gradient
eluent) to afford the title compound (4.4 mg, 23% yield). MS (apci)
m/z=469.2 (M+H).
Example 408
##STR00618##
[1170]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-propylpiperazin-1-yl)pyridin-3-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1171] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 20 mg,
0.044 mmol) in DMF (300 .mu.L) and TEA (61 .mu.L, 0.44 mmol) was
treated with 1-iodopropane (8.5 .mu.L, 0.087 mmol). The reaction
mixture was stirred overnight at room temperature, and then
additional 1-iodopropane (8.5 .mu.L, 0.087 mmol; 1 eq) was added.
The reaction was allowed to stir at room temperature until complete
by HPLC. The reaction mixture was directly purified by C18 reverse
phase chromatography (10-99% ACN/Water as the gradient eluent) to
afford the title compound (12 mg, 64% yield). MS (apci) m/z=427.2
(M+H).
[1172] The compounds in Table MM were prepared according to the
method described for the synthesis of Example 408 (except where
noted), replacing 1-iodopropane with the appropriate alkyl halide
starting. Reactions were monitored by HPLC, and reaction times
adjusted accordingly. In some cases, additional alkyl halide (1
eq)/TEA (1.2 eq) was required after stirring overnight. Title
compounds were cleanly isolated following C18 reverse phase
chromatography utilizing an appropriate gradient eluent.
TABLE-US-00044 TABLE MM MS (apci) Ex # Structure Chemical Name m/z
409 ##STR00619## 4-(6-(4-ethylpiperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
413.2 (M + H) 410 ##STR00620## 4-(6-(4-isopropylpiperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 427.2 (M + H) 411*
##STR00621## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-
phenethylpiperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 489.2 (M + H) *reaction was conducted at 75.degree.
C.
Example 412
##STR00622##
[1173]
(R)-4-(6-(4-(2-methoxypropyl)piperazin-1-yl)pyridin-3-yl)-6-(1-meth-
yl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1174] NaH (60% w/w dispersion in mineral oil; 1.12 mg, 0.0280
mmol) was added to a cold (0.degree. C.) solution of
(R)-4-(6-(4-(2-hydroxypropyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 158;
6.2 mg, 0.0140 mmol) in dry THF (0.2 mL), and the reaction mixture
was stirred for 10 min at 0.degree. C. CH.sub.3I (1 M in THF; 1.74
.mu.L, 0.0280 mmol) was added to the 0.degree. C. mixture. The
reaction mixture was stirred at room temperature at 0.degree. C.
overnight. The reaction was quenched with water and CHCl.sub.3. The
biphasic mixture was separated, the aqueous phase was extracted
with CHCl.sub.3, and the combined organic extracts were filtered
through a PS frit. The filtrate was concentrated in vacuo, and the
residue was purified by C18 reverse phase chromatography (25-90%
ACN/water as the gradient eluent) to afford the title compound (2.8
mg, 44% yield). MS (apci) m/z=457.1 (M+H).
[1175] The compounds in Table NN were prepared according to the
method described for the synthesis of Example 412, replacing
(R)-4-(6-(4-(2-hydroxypropyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 158)
with the appropriate alcohol. Reactions were monitored for
completion by LCMS, and reaction times were adjusted accordingly.
The title compounds were cleanly isolated following C18 reverse
phase chromatography using an appropriate gradient.
TABLE-US-00045 TABLE NN MS (apci) Ex # Structure Chemical Name m/z
413* ##STR00623## 4-(6-(4-(2-methoxy-3- methylbutyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 485.2 (M + H) 414
##STR00624## 4-(6-(4-(2-methoxy-2- methylpropyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 471.2 (M + H) 415
##STR00625## (S)-4-(6-(4-(2- methoxypropyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 457.1 (M + H) 416
##STR00626## 4-(6-(4-((3r,4s)-4- methoxytetrahydrofuran-3-
yl)piperazin-1-yl)pyridin- 3-yl)-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 485.2 (M + H)
417 ##STR00627## 4-(6-(4-(2-methoxy-3,3- dimethylbutyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 499.3 (M + H) *Example
413 utilized DCM in quench/work-up.
Example 418
##STR00628##
[1176]
4-(6-(4-(2,2-difluoroethyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-
-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1177] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.0199 g,
0.0435 mmol) in DMF (0.3 mL) was treated with TEA (60.6 .mu.L,
0.435 mmol) and 2,2-difluoroethyl trifluoromethanesulfonate (0.0279
g, 0.131 mmol). The reaction mixture was stirred overnight at
65.degree. C., and then purified directly by C18 reverse phase
chromatography (5-99% ACN/water as the gradient eluent) to afford
the title compound (10.6 mg, 54% yield). MS (apci) m/z=449.2
(M+H).
Example 419
##STR00629##
[1178]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2,2,2-trifluoroethyl)piperazi-
n-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1179] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.0203 g,
0.0444 mmol) in dry DMF (0.3 mL) was treated with TEA (61.9 .mu.L,
0.444 mmol) and 1,1,1-trifluoro-2-iodoethane (0.0280 g, 0.133
mmol). The resulting suspension was stirred overnight at 70.degree.
C., and then additional dry DMF (0.2 mL), TEA (50 .mu.L, 0.359
mmol) and 2,2,2-trifluoroethyl trifluoromethanesulfonate (19.8
.mu.L, 0.133 mmol) were added. The resulting solution was stirred
for 3 d at 70.degree. C. After cooling to room temperature, the
reaction mixture was purified directly by C18 reverse phase
chromatography (5-99% ACN/water as the gradient eluent) to afford
the title compound (12.8 mg, 62% yield). MS (apci) m/z=467.1
(M+H).
Example 420
##STR00630##
[1180]
4-(6-(4-(2-(tert-butoxy)ethyl)piperazin-1-yl)pyridine-3-yl)-6-(1-me-
thyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1181] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 0.0175 g,
0.0383 mmol) in dry DMF (0.3 mL) was treated with TEA (53.3 .mu.L,
0.383 mmol) and 2-(tert-butoxy)ethyl methanesulfonate (0.0150 g,
0.0765 mmol). The reaction mixture was stirred overnight at
75.degree. C., and then additional 2-(tert-butoxy)ethyl
methanesulfonate (7.5 mg, 0.0.0383 mmol) and dry DMF (0.2 mL) were
added. The reaction was allowed to stir 48 h at 75.degree. C., then
for 24 h at 85.degree. C. The reaction mixture was cooled to room
temperature and purified directly by C18 reverse phase
chromatography (20-90% ACN/water as the gradient eluent) to afford
the title compound (8.7 mg, 47% yield). MS (apci) m/z=485.2
(M+H)
Example 421
##STR00631##
[1182]
(R)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(1-phenylethyl)piperazin-1-
-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
Step 1: Preparation of (S)-1-phenylethyl methanesulfonate
[1183] A cold (0.degree. C.) solution of (S)-1-phenylethanol (0.95
g, 7.78 mmol) and TEA (2.17 mL, 15.6 mmol) in DCM (10 mL) was
treated over a 20 min period with methanesulfonyl chloride (1.07 g,
9.33 mmol). The resulting reaction mixture was allowed to warm to
room temperature. The room temperature mixture was quenched with
water (2 mL), and the combined organic extracts were separated
using phase separation chromatography and concentrated in vacuo.
The resultant oil was used directly in Step 2.
Step 2: Preparation of
(R)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(1-phenylethyl)piperazin-1-yl)py-
ridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[1184] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.05303 g,
0.1159 mmol) in dry DMF (0.9 mL) was treated with Cs.sub.2CO.sub.3
(0.3778 g, 1.159 mmol) and (S)-1-phenylethyl methanesulfonate
(0.1393 g, 0.3478 mmol). The resulting mixture was stirred
overnight at 70.degree. C., and then additional (S)-1-phenylethyl
methanesulfonate (50 .mu.L) was added. The reaction temperature was
raised to 80.degree. C., and the reaction was allowed to stir for
an additional 24 h. The reaction mixture was quenched with
water/DCM. The combined organic extracts were separated, filtered
through PS paper, and concentrated in vacuo. The residue was
purified by C18 reverse phase chromatography (10-99%, ACN/Water
with 0.01% HCl as the gradient eluent) to afford the title compound
as the di-HCl salt (11.2 mg, 20% yield). MS (apci) m/z=489.2
(M+H).
Example 422
##STR00632##
[1185]
(S)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(1-phenylethyl)piperazin-1-
-yl)pyridine-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[1186] The title compound was prepared according to the method
described for the synthesis of Example 421, replacing
(S)-1-phenylethanol with (R)-1-phenylethanol in Step 1, and
replacing (S)-1-phenylethyl methanesulfonate with (R)-1-phenylethyl
methanesulfonate in Step 2, and increasing amounts of both the
methanesulfonate reagent (6 eq) and Cs.sub.2CO.sub.3 (13 eq).
Following C18 reverse phase chromatography (10-99%, ACN/Water with
0.01% HCl as the gradient eluent) the title compound was cleanly
isolated as the di-HCl salt (13.7 mg, 25% yield). MS (apci)
m/z=489.2 (M+H).
Example 423
##STR00633##
[1187]
4-(6-(4-((5-fluoropyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1188] A room temperature mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 30.00 mg,
78.04 mmol) and 5-fluoronicotinaldehyde (14.64 mg, 117.06 mmol) in
DMF (1.00 mL) was treated with TEA (32.45 mL, 234.12 mmol). The
mixture was acidified to pH 6 with acetic acid, and then stirred
for 2 h at 25.degree. C. NaBH.sub.3CN (9.808 mg, 156.08 mmol) was
added to the reaction mixture. The resulting mixture was stirred at
25.degree. C. for 10 h. The reaction mixture was filtered to remove
particulates, and the filtrate was purified by preparative HPLC (10
mM NH.sub.4(HCO3)/ACN) to afford the title compound (14.8 mg, 38%
yield). MS (apci) m/z=494.1 (M+H), 516.1 (M+Na).
[1189] The compounds in Table 00 were prepared according to the
method described for the synthesis of Example 423, replacing
5-fluoronicotinaldehyde with the appropriate aldehyde. Reactions
were monitored for completion by LCMS, and reaction times were
adjusted accordingly. Title compounds were cleanly isolated
following preparative HPLC using an appropriate gradient
eluent.
TABLE-US-00046 TABLE OO MS (apci) Ex# Structure Chemical Name m/z
424 ##STR00634## 4-(6-(4-(4- fluorobenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 493.1 (M + H) 425
##STR00635## 4-(6-(4-(4- chlorobenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 509.1 (M + H) 426
##STR00636## 4-(6-(4-(2,4- difluorobenzyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 511.1 (M + H) 427
##STR00637## 4-(6-(4-(2- fluorobenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 493.2 (M + H) 428
##STR00638## 4-(6-(4-(3- fluorobenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 493.1 (M + H) 429
##STR00639## 4-(6-(4-(2,5- difluorobenzyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 511.2 (M + H) 430
##STR00640## 4-(6-(4-((5-chloropyridin- 3-yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 510.1 (M + H) 431
##STR00641## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((6-
methylpyrazin-2- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 491.2 (M + H) 432
##STR00642## 4-(6-(4-(4- methoxybenzyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.2 (M + H) 433
##STR00643## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((6-
methylpyridin-2- yl)methyl)piperazin-1- yl)pyridine-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 490.2 (M + H) 434
##STR00644## 4-(6-(4-((3-fluoropyridin- 4-yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 494.2 (M + H) 435
##STR00645## 4-(6-(4-((1,5-dimethyl-1H- pyrazol-4-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 493.2 (M + H) 436
##STR00646## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((5-
methylisoxazol-3- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 480.1 (M + H) 437
##STR00647## 4-(6-(4-((1-methyl-1H- imidazol-2-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 479.2 (M + H) 438
##STR00648## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((3-
methylpyridin-2- yl)methyl)piperazin-1- yl)pyridine-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 490.2 (M + H) 439
##STR00649## 4-(6-(4-((1-methyl-1H- pyrazol-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 479.2 (M + H) 440
##STR00650## 4-(6-(4-((1,3-dimethyl-1H- pyrazol-4-
yl)methyl)piperazin-1- yl)pyridine-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 493.2 (M + H) 441
##STR00651## 4-(6-(4-(2,6- difluorobenzyl)piperazin-
1-yl)pyridine-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 511.1 (M + H) 442
##STR00652## 4-(6-(4-((5- methoxypyridin-3- yl)methyl)piperazin-1-
yl)pyridine-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 506.2 (M + H) 443
##STR00653## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((4-
methylpyridin-2- yl)methyl)piperazin-1- yl)pyridine-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 490.2 (M + H) 444
##STR00654## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((5-
methylpyrazin-2- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 491.1 (M + H) 445
##STR00655## 4-(6-(4-((1-isopropyl-1H- pyrazol-4-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 507.2 (M + H) 446
##STR00656## 4-(6-(4-((1-ethyl-1H- pyrazol-4-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 493.2 (M + H) 447
##STR00657## 4-(6-(4-(3,5- difluorobenzyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 511.1 (M + H) 448
##STR00658## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-((1-methyl-1H-
pyrazol-4- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 479.2 (M + H) 449
##STR00659## 4-(6-(4-((1-methyl-1H- imidazol-4-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 479.2 (M + H) 450
##STR00660## 4-(6-(4-(3- methoxybenzyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.2 (M + H) 451
##STR00661## 4-(6-(4-(2- methoxybenzyl)piperazin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 505.2 (M + H) 452
##STR00662## 4-(6-(4-((2- methoxypyridin-3- yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 506.2 (M + H) 453
##STR00663## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(pyridine-2-
ylmethyl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 477.1 (M + H) 454 ##STR00664## 4-(6-(4-(2-
chlorobenzyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
509.1 (M + H) 455 ##STR00665## 4-(6-(4-(3-
chlorobenzyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
509.1 (M + H) 456 ##STR00666## 4-(6-(4-((1-acetylpiperidin-
4-yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
524.2 (M + H) 457 ##STR00667## 4-(6-(4-((5-fluoro-2-
methoxypyridin-3- yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
524.0 (M + H) 458 ##STR00668## 4-(6-(4-((5- methoxypyridin-2-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 506.2 (M + H) 459
##STR00669## 4-(6-(4-((3,3- difluorocyclobutyl)methyl)
piperazin-1-yl)pyridin-3- yl)-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 489.0 (M + H)
460 ##STR00670## 4-(6-(4-(2- (dimethylamino)benzyl)
piperazin-1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 518.0 (M + H) 461
##STR00671## 4-(6-(4-(4- (dimethylamino)benzyl)
piperazin-1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 518.2 (M + H) 462
##STR00672## 4-(6-(4-((5-fluoropyridin- 2-yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 494.1 (M + H) 463
##STR00673## 4-(6-(4-((3- methoxypyridin-2- yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile formate 506.1 (M +
H)
Example 464
##STR00674##
[1190]
4-(6-(4-(2-cyanobenzyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1191] A room temperature suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 50 mg,
0.11 mmol) in DMF (1.1 mL) was treated with 2-formylbenzonitrile
(22 mg, 0.16 mmol) and TEA (46 .mu.L, 0.33 mmol). The mixture was
acidified to pH 6 with acetic acid, and then stirred for 2 h at
room temperature. NaBH.sub.3CN (14 mg, 0.22 mmol) was added to the
reaction mixture. The resulting mixture was stirred for 18 h at
room temperature. The reaction mixture was warmed briefly, filtered
to remove particulates, and the filtrate was purified by C18
reverse phase chromatography (5-50% ACN/water as the gradient
eluent) to afford the title compound (24.8 mg, 44% yield). MS
(apci) m/z=500.2 (M+H).
[1192] The compounds in Table PP were prepared according to the
method described for the synthesis of Example 464, replacing
2-formylbenzonitrile with the appropriate aldehyde. Reactions were
monitored for completion by LCMS, and reaction times were adjusted
accordingly. The title compounds were cleanly isolated following
C18 reverse phase chromatography using an appropriate gradient
eluent, except where noted.
TABLE-US-00047 TABLE PP MS (apci) Ex. # Structure Chemical Name m/z
465* ##STR00675## 6-(1-methyl-1H-pyrazol-4-yl)-4-
(6-(4-((2-methylpyrimidin-5- yl)methyl)piperazin-1-yl)pyridin-
3-yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 491.2 (M + H) 466*
##STR00676## 6-(1-methyl-1H-pyrazol-4-yl)-4-
(6-(4-((tetrahydro-2H-pyran-4- yl)methyl)piperazin-1-yl)pyridin-
3-yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 483.2 (M + H) 467
##STR00677## 6-(1-methyl-1H-pyrazol-4-yl)-4-
(6-(4-((2-methylpyrimidin-4- yl)methyl)piperazin-1-yl)pyridin-
3-yl)pyrazolo[1,5-a]pyridine-3- carbonitrile 491.2 (M + H) 468
##STR00678## 4-(6-(4-(3- cyanobenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl-1H- pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 500.2 (M + H) 469 ##STR00679##
4-(6-(4-(4- cyanobenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl-1H- pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 500.2 (M + H) 470 ##STR00680##
4-(6-(4-(2,6- dimethylbenzyl)piperazin-1-
yl)pyridin-3-yl)-6-(1-methyl-1H- pyrazol-4-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 503.2 (M + H) *purified by an aqueous
work up: partitioned between EtOAc and water; aqueous extract was
neutralized (to pH 7) with saturated NaHCO.sub.3, then extracted
with EtOAc, and the combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo
prior to chromatographic purification.
Example 471
##STR00681##
[1193]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridin-3-ylmethyl)piperazin--
1-yl)pyridine-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1194] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 10 mg,
0.022 mmol) in DMF (0.2 mL) was treated with nicotinaldehyde (3.5
mg, 0.033 mmol), Me.sub.4N(AcO).sub.3BH (14 mg, 0.22 mmol) and TEA
(9.1 .mu.L, 0.066 mmol). The resulting mixture was stirred for 18 h
at room temperature, then purified directly by C18 reverse phase
chromatography (5-60% ACN/water as the gradient eluent) to afford
the title compound (6.5 mg, 63% yield). MS (apci) m/z=476.1
(M+H).
Example 472
##STR00682##
[1195]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrimidin-2-ylmethyl)piperazi-
n-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1196] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.128 g,
0.280 mmol) in dry DMA (3 mL) was treated with TEA (117 .mu.L,
0.840 mmol), Me.sub.4N(AcO).sub.3BH (147 mg, 0.560 mmol) and
2-pyrimidine carboxaldehyde (60.5 mg, 0.560 mmol). The resulting
mixture was stirred for 3 d at room temperature, and then
additional TEA (39 .mu.L, 0.280 mmol), Me.sub.4N(AcO).sub.3BH (73.5
mg, 0.187 mmol) and 2-pyrimidine carboxaldehyde (20.2 mg, 0.28
mmol) were added. After stirring an additional 24 h at room
temperature, the reaction mixture was quenched with water and
CHCl.sub.3, and allowed to stir for 20 min. The resulting biphasic
mixture was filtered through a PS frit, and the aqueous layer was
washed with CHCl.sub.3. The organic filtrate was concentrated in
vacuo, and the residue was purified by C18 reverse phase
chromatography (15-90% ACN/water as the gradient eluent) to afford
the title compound (60 mg, 45% yield). MS (apci) m/z=477.1
(M+H).
Example 473
##STR00683##
[1197]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-
-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1198] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 10 mg,
0.022 mmol) in DMF (0.2 mL) was treated with picolinaldehyde (3.5
mg, 0.033 mmol), Me.sub.4N(AcO).sub.3BH (12 mg, 0.044 mmol) and TEA
(9.1 .mu.L, 0.066 mmol). The resulting mixture was stirred
overnight at room temperature, then purified directly by C18
reverse phase chromatography (0-60% ACN/water as the gradient
eluent) to afford the title compound (5.5 mg, 53% yield). MS (apci)
m/z=476.2 (M+H).
Example 474
##STR00684##
[1199]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1200] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.125 g,
0.273 mmol) in dry DMA (2.5 mL) was treated with TEA (114 .mu.L,
0.820 mmol), Me.sub.4N(AcO).sub.3BH (144 mg, 0.547 mmol) and
6-methoxynicotinaldehyde (0.0750 g, 0.547 mmol). The resulting
mixture was stirred overnight at room temperature, then quenched
with water and CHCl.sub.3 and allowed to stir for 30 min. The
resulting biphasic mixture was filtered through a PS frit, and the
aqueous layer was washed with CHCl.sub.3. The organic filtrate was
concentrated in vacuo, and the residue was purified by C18
reverse-phase chromatography (5-90% ACN/water as the gradient
eluent) to afford the title compound (56 mg, 41% yield). MS (apci)
m/z=506.0 (M+H).
Example 475
##STR00685##
[1201]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(tetrahydro-2H-pyran-4-yl)pipe-
razin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1202] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridin-3-carbonitrile dihydrochloride (Example 2; 0.0208 g,
0.0455 mmol) in dry DMF (0.4 mL) was treated with TEA (19.0 .mu.L,
0.136 mmol), dihydro-2H-pyran-4(3H)-one (15.0 .mu.L, 0.091 mmol)
and Me.sub.4N(AcO).sub.3BH (23.9 mg, 0.091 mmol). The resulting
mixture was stirred overnight at 80.degree. C., and then additional
dihydro-2H-pyran-4(3H)-one (15.0 .mu.L, 0.091 mmol) was added. The
reaction mixture was allowed to stir at 80.degree. C. until
complete by LCMS, and then cooled to room temperature. The reaction
mixture was purified directly by C18 reverse phase chromatography
(10-99% ACN/Water as the gradient eluent) to afford the title
compound (4.4 mg, 21% yield). MS (apci) m/z=469.1 (M+H).
Example 476
##STR00686##
[1203]
4-(6-(4-cyclobutylpiperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyraz-
ol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1204] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.018 g,
0.0394 mmol) in dry DMF (0.3 mL) was treated with TEA (16.5 .mu.L,
0.118 mmol), cyclobutanone (10.0 .mu.L, 0.0787 mmol) and
Me.sub.4N(AcO).sub.3BH (20.7 mg, 0.0787 mmol). The mixture was
stirred overnight at 70.degree. C., and then additional
cyclobutanone (10.0 .mu.L, 0.0787 mmol) and TEA (25 .mu.L, 0.179
mmol) were added. The reaction mixture was allowed to stir at
80.degree. C. overnight, then cooled to room temperature and
purified directly by C18 reverse phase chromatography (10-99%
ACN/Water as the gradient eluent) to afford the title compound (8
mg, 46% yield). MS (apci) m/z=439.2 (M+H).
Example 477
##STR00687##
[1205]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(oxetan-3-ylmethyl)piperazin-1-
-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1206] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (Example 2a; 34.3 mg, 0.0892 mmol) in
dry DCM (1.8 mL) was treated with oxetane-3-carbaldehyde (11.5 mg,
0.134 mmol), NaBH(AcO).sub.3 (28.4 mg, 0.134 mmol) and acetic acid
(25.5 .mu.L, 0.446 mmol). The resulting reaction mixture was
allowed to stir 16 h at room temperature. The reaction mixture was
diluted with DCM, and washed with saturated NaHCO.sub.3. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by C18 reverse phase chromatography (5-95% water/ACN
with 0.1% TFA as the gradient eluent) to afford the title compound
as the TFA salt. The TFA salt was partitioned between 4:1 DCMIiPrOH
and saturated NaHCO.sub.3. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered and concentrated in vacuo
to afford the title compound (8 mg, 46% yield). MS (apci) m/z=455.2
(M+H).
[1207] The compounds in Table QQ were prepared according to the
method described for the synthesis of Example 477, replacing
oxetane-3-carbaldehyde with the appropriate aldehyde. Reactions
were monitored for completion by LCMS, and reaction times were
adjusted accordingly. The title compounds were cleanly isolated
following C18 reverse phase chromatography using an appropriate
gradient eluent.
TABLE-US-00048 TABLE QQ MS (apci) Ex. # Structure Chemical Name m/z
478 ##STR00688## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(2-
morpholinoethyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-cartbonitrile 498.2 (M + H) 479
##STR00689## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(4-(oxetan-3-
yl)piperazin-1-yl)pyridin- 3-yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 441.2 (M + H)
Example 480
##STR00690##
[1208]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(methylamino)ethyl)piperazi-
n-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1209] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (Example 2a; 41.6 mg, 0.108 mmol) in
dry DCM (1.1 mL) was treated with tert-butyl
methyl(2-oxoethyl)carbamate (28.1 mg, 0.162 mmol), and then with
NaBH(AcO).sub.3 (34.4 mg, 0.162 mmol). The reaction mixture was
allowed to stir for 16 h at room temperature. The reaction mixture
was diluted with DCM and washed with saturated NaHCO.sub.3. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was dissolved in 1:1 DCM/TFA (1.1 mL), stirred for 30 min at room
temperature, and concentrated in vacuo. The residue was purified by
C18 reverse phase chromatography (5-95% water/ACN with 0.1% TFA as
the gradient eluent) to afford the title compound as the TFA salt.
The TFA salt was partitioned between 4:1 DCM/iPrOH and saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered and concentrated in vacuo to
afford the title compound (24.5 mg, 51% yield). MS (apci) m/z=442.2
(M+H).
Example 481
##STR00691##
[1210]
4-(6-(4-(2-(dimethylamino)ethyl)piperazin-1-yl)pyridin-3-yl)-6-(1-m-
ethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1211] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(methylamino)ethyl)piperazin-1-yl-
)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 480;
18.0 mg, 0.0408 mmol) in formic acid (308 .mu.L) was treated with
formaldehyde (91.9 .mu.L, 1.22 mmol), and stirred at 80.degree. C.
for 16 h. The reaction mixture was cooled to room temperature,
concentrated in vacuo, and purified by C18 reverse phase
chromatography (5-95% water/ACN with 0.1% TFA) to afford the title
compound as the TFA salt. The TFA salt was partitioned between 4:1
DCM/iPrOH and saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to afford the title compound (9.8 mg, 53%
yield). MS (apci) m/z=456.2 (M+H).
Example 482
##STR00692##
[1212]
4-(6-(4-benzyl-3-oxopiperazin-1-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1213] In a microwave vessel, a room temperature solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 50 mg, 0.16 mmol) in DMSO (785
.mu.L) was treated with 1-benzylpiperazin-2-one (59.8 mg, 0.314
mmol) and K.sub.2CO.sub.3 (65.1 mg, 0.471 mmol). The resulting
mixture was subjected to microwave irradiation for 4 h at
150.degree. C. The reaction mixture was cooled to room temperature
and filtered. The filtrate was purified directly by C18 reverse
phase chromatography (5-65% ACN/water) to afford the title compound
(42.4 mg, 54% yield). MS (apci) m/z=489.2 (M+H).
Example 483
##STR00693##
[1214]
4-(6-((1S,4S)-5-benzyl-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-
-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of
4-(6-((1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-6-(1-methy-
l-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1215] (1S,4S)-tert-butyl
5-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idine-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate (Example
170; 75 mg, 0.15 mmol) was dissolved in 1:1 DCM/TFA (2.0 mL) at
room temperature. The reaction mixture was stirred for 1 h at room
temperature, and then concentrated in vacuo. The residue was
purified by silica chromatography (1-30% DCM/MeOH with 2%
NH.sub.4OH as the gradient eluent) to afford the title compound
(59.8 mg, quantitative yield). MS (apci) m/z=397.2 (M+H).
Step 2: Preparation of
4-(6-((1S,4S)-5-benzyl-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-6-
-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1216] A room temperature solution of
4-(6-((1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-6-(1-methy-
l-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (59.8 mg,
0.151 mmol) in DCM (1.5 mL) was treated sequentially with TEA (102
.mu.L, 0.754 mmol) and benzyl bromide (53.7 .mu.L, 0.453 mmol). The
reaction mixture was stirred for 16 h at room temperature, then
concentrated in vacuo. The residue was purified by C18 reverse
phase chromatography (5-95% water/ACN as the gradient eluent) to
afford the title compound as the TFA salt. The TFA salt was
suspended in 4:1 DCM/iPrOH and extracted with saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (35.3 mg, 48% yield). MS (apci)
m/z=487.2 (M+H).
[1217] The compounds in Table RR were prepared according to the
method described for the synthesis of Example 483, replacing
(1S,4S)-tert-butyl
5-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idine-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate (Example
170) with the appropriate amino starting materials. Reactions were
monitored by LCMS, and reaction times were adjusted accordingly to
cleanly afford the title compounds.
TABLE-US-00049 TABLE RR MS (apci) Ex. # Structure Chemical Name m/z
484 ##STR00694## 4-(6-(8-benzyl-3,8- diazabicyclo[3.2.1]octan-3
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyndine 3-carbonitrile 501.2 (M + H) 485
##STR00695## 4-(6-(7-benzyl-2,7- diazaspiro[3.5]nonan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 515.2 (M + H)
Example 486
##STR00696##
[1218]
4-(6-(3,6-Diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl--
1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
3-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridin-2-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate
[1219] A room temperature mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 48.1 mg, 0.151 mmol) in s-BuOH
(1.5 mL) was treated with
3,6-diaza-bicyclo[3.1.1]heptane-6-carboxylic acid tert-butyl ester
(31.5 mg, 0.159 mmol) and DIEA (132 .mu.L, 0.756 mmol). The
reaction mixture was stirred for 16 h at 130.degree. C., and then
DMSO (1 mL) was added to alleviate solubility issues. The reaction
mixture was stirred for an additional 24 h at 130.degree. C., after
which time additional 3,6-diaza-bicyclo[3.1.1]heptane-6-carboxylic
acid tert-butyl ester (32 mg, 0.16 mmol) and DIEA (132 .mu.L, 0.756
mmol) were added. The reaction mixture was stirred for an
additional period of 60 h at 130.degree. C., then cooled to room
temperature, diluted with EtOAc, and washed successively with water
and brine. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to afford the
title compound which was directly carried on to Step 2 without
further purification. MS (apci) m/z=497.2 (M+H).
Step 2: Preparation of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1220] The tert-butyl
3-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idine-2-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate residue
was dissolved in 1:1 DCM/TFA (2.0 mL), stirred for 1 h at room
temperature, then concentrated in vacuo. The residue was purified
by silica chromatography (1-30% DCM/MeOH with 2% NH.sub.4OH as the
gradient eluent) to cleanly afford the title compound (59.9 mg,
quantitative yield). MS (apci) m/z=397.2 (M+H).
Example 487
##STR00697##
[1221]
4-(6-(3,6-Diazabicyclo[3.1.1]heptan-6-yl)pyridine-3-yl)-6-(1-methyl-
-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
6-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridine-2-yl)-3,6-diazabicyclo[3.1.1]heptane-3-carboxylate
[1222] A room temperature mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; (38.7 mg, 0.122 mmol) in DMSO
(1.2 mL) was treated with
3,6-diaza-bicyclo[3.1.1]heptane-3-carboxylic acid tert-butyl ester
(25.3 mg, 0.128 mmol) and DIEA (106 .mu.L, 0.608 mmol). The
reaction mixture was stirred for 16 h at 130.degree. C., and then
additional 3,6-diaza-bicyclo[3.1.1]heptane-3-carboxylic acid
tert-butyl ester (25 mg, 0.13 mmol) and DIEA (106 .mu.L, 0.608
mmol) were added. The reaction mixture was stirred for an
additional 60 h at 130.degree. C., then cooled to room temperature,
diluted with EtOAc, and washed successively with water and brine.
The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to afford the
title compound which was directly carried on to Step 2 without
further purification. MS (apci) m/z=497.2 (M+H).
Step 2: Preparation of
4-(6-(3,6-Diazabicyclo[3.1.1]heptan-6-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1223] tert-butyl
6-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridin-2-yl)-3,6-diazabicyclo[3.1.1]heptane-3-carboxylate was
dissolved in 1:1 DCM/TFA (2.0 mL), stirred for 1 h at room
temperature, and then concentrated in vacuo. The residue was
purified by silica chromatography (1-30% DCM/MeOH with 2%
NH.sub.4OH as the gradient eluent) to cleanly afford the title
compound (48.2 mg, quantitative yield). MS (apci) m/z=397.2
(M+H).
Example 488
##STR00698##
[1224]
4-(6-(3,8-Diazabicyclo[3.2.1]octan-8-yl)pyridine-3-yl)-6-(1-methyl--
1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridin-2-yl)-3,8-diazabicyclo[3.2.1]octane-3-carboxylate
[1225] A room temperature mixture of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 48.1 mg, 0.151 mmol) in DMSO
(1.2 mL) was treated with tert-Butyl
3,8-diazabicyclo[3.2.1]octane-3-carboxylate (49.9 mg, 0.235 mmol)
and DIEA (102 .mu.L, 0.587 mmol). The reaction mixture was stirred
for 60 h at 130.degree. C., then cooled to room temperature,
diluted with EtOAc and washed successively with water and brine.
The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (5-50% DCM/Acetone as the
gradient eluent) to afford the title compound which was directly
carried on to Step 2. MS (apci) m/z=511.2 (M+H).
Step 2: Preparation of
4-(6-(3,8-Diazabicyclo[3.2.1]octan-8-yl)pyridine-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1226] tert-Butyl
8-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridine-2-yl)-3,8-diazabicyclo[3.2.1]octane-3-carboxylate was
dissolved in 1:1 DCM/TFA (2.0 mL), stirred for 30 min at room
temperature and then concentrated in vacuo. The residue was
purified by C18 reverse phase chromatography (5-95% water/ACN with
0.1% TFA as the gradient eluent) to afford the title compound as
the TFA salt. The TFA salt was suspended in 4:1 DCM/iPrOH and
extracted with saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to cleanly afford the title compound (20.4
mg, 42% yield). MS (apci) m/z=411.1 (M+H).
Example 489
##STR00699##
[1227]
4-(6-(6-benzyl-3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(-
1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1228] A room temperature solution of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 486; 59.9
mg, 0.151 mmol) in DCM (1.5 mL) was treated sequentially with TEA
(102 .mu.L, 0.755 mmol) and benzyl bromide (53.8 .mu.L, 0.453
mmol). The reaction mixture was stirred 16 h at room temperature,
then concentrated in vacuo. The residue was purified by C18 reverse
phase chromatography (5-95% water/ACN with 0.1% TFA as the gradient
eluent) to afford the title compound as the TFA salt. The TFA salt
was suspended in 4:1 DCM/iPrOH and extracted with saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The residue was purified by silica chromatography (1-30% DCM/MeOH
with 2% NH.sub.4OH as the gradient eluent) to cleanly afford the
title compound (9.3 mg, 13% yield). MS (apci) m/z=487.2 (M+H).
[1229] The compounds in Table SS were prepared according to the
method described for the synthesis of Example 489, replacing
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile with the
appropriate amino starting materials. The title compounds were
isolated cleanly following the free base work up (i.e. the final
silica chromatographic purification was omitted).
TABLE-US-00050 TABLE SS MS (apci) Ex. # Structure Chemical Name m/z
490 ##STR00700## 4-(6-(3-benzyl-3,6- diazabicyclo[3.1.1]heptan-
6-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 487.2 (M + H) 490
##STR00701## 4-(6-(3-benzyl-3,8- diazabicyclo[3.2.1]octan-8-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 501.2 (M + H)
Example 492
##STR00702##
[1230]
4-(6-(2-(cyclopropanecarbonyl)-2,7-diazaspiro[3.5]nonan-7-yl)pyridi-
n-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1231] A room temperature solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 215; 5.4 mg, 0.011 mmol) in DMA (0.2 mL) was treated
sequentially with DIEA (11.4 .mu.L, 0.065 mmol), then
cyclopropanecarbonyl chloride (3.0 .mu.L, 0.033 mmol). The reaction
mixture was stirred for 1 h at room temperature, then diluted with
water (2 mL) and stirred overnight. The reaction mixture was vacuum
filtered. The isolated solids were rinsed with water and Et.sub.2O,
and dried in vacuo to afford the title compound (3.9 mg, 73%
yield). MS (apci) m/z=493.1 (M+H).
[1232] The compounds in Table TT were prepared according to the
method described for the synthesis of Example 492, replacing
cyclopropanecarbonyl chloride with the appropriate acid chloride
starting material, using either DMF or DMA as the reaction solvent
and either DIEA or TEA as the base. Reactions were monitored by
LCMS, and reaction times were adjusted accordingly. Title compounds
were cleanly isolated by filtration after an aqueous quench, unless
otherwise noted.
TABLE-US-00051 TABLE TT MS (apci) Ex. # Structure Chemical Name m/z
493 ##STR00703## 4-(6-(2- (cyclobutanecarbonyl)-2,7-
diazaspiro[3.5]nonan-7- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 507.1 (M + H) 494*
##STR00704## 4-(6-(2-(2- (dimethylamino)acetyl)-
2,7-diazaspiro[3.5]nonan-7- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
510.2 (M + H) 495 ##STR00705## 4-(6-(2- (cyclohexanecarbonyl)-2,7-
diazaspiro[3.5]nonan-7- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 535.2 (M + H) 496
##STR00706## 4-(6-(2-(2-ethylbutanoyl)- 2,7-diazaspiro[3.5]nonan-7-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 523.2 (M + H) 497
##STR00707## 4-(6-(2-(2- cyclopentylacetyl)-2,7-
diazaspiro[3.5]nonan-7- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 535.2 (M + H) 498
##STR00708## 4-(6-(2-(2- cyclohexylacetyl)-2,7-
diazaspiro[3.5]nonan-7- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonilrile 549.2 (M + H) *Following
aqueous quench, the reaction mixture was directly subjected to C18
reverse phase chromatographic purification utilizing an appropriate
gradient eluent to cleanly afford the title compound.
Example 499
##STR00709##
[1233] Cyclopentyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idine-2-yl)-2,7-diazaspiro[3.5]nonane-2-carboxylate
[1234] A room temperature solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 215; 8 mg, 0.016 mmol) in DMA (0.3 mL) was treated
sequentially with DIEA (28 .mu.L, 0.16 mmol), then cyclopentyl
carbonochloridate (12 mg, 0.080 mmol). The reaction mixture was
stirred 3 d at room temperature, and then diluted with water (2
mL). The resulting white suspension was filtered. The solid was
collected, rinsed with water and Et.sub.2O, and dried in vacuo. The
crude solid was purified by silica chromatography (0-100%
acetone/hexanes as the gradient eluent) to cleanly afford the title
compound (2.1 mg, 24% yield). MS (apci) m/z=537.2 (M+H).
Example 500
##STR00710##
[1235]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(2-(pyrrolidine-1-carbonyl)-2,7-d-
iazaspiro[3.5]nonan-7-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1236] A room temperature solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 215; 5.6 mg, 0.011 mmol) in DMA (0.2 mL) was treated
sequentially with DIEA (12 .mu.L, 0.068 mmol) and
pyrrolidine-1-carbonyl chloride (3.0 mg, 0.023 mmol). The reaction
mixture was stirred 1 h at room temperature before diluting with
water (2 mL). The reaction mixture was stirred overnight, and then
the suspension was filtered. The solids were collected and rinsed
with water and Et.sub.2O. The filtrate was filtered again, rinsing
the solids rinsed with water and Et.sub.2O. The collected solids
were combined and dried in vacuo to afford the title compound (2.1
mg, 36% yield). MS (apci) m/z=522.2 (M+H).
[1237] The compounds in Table UU were according to the method
described for the synthesis of Example 500, replacing
pyrrolidine-1-carbonyl chloride with the appropriate acid halide
starting material. Reactions were monitored by LCMS and reaction
times/temperatures were adjusted accordingly. Title compounds were
cleanly isolated following filtration except where noted.
TABLE-US-00052 TABLE UU MS (apci) Ex. # Structure Chemical Name m/z
501* ##STR00711## 7-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N,N- dimethyl-2,7-
diazaspiro[3.5]nonane-2- carboxamide 496.1 (M + H) 502 ##STR00712##
7-(5-(3-cyano-6-(1-methyl- 1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridin-
4-yl)pyridin-2-yl)-N,N- diethyl-2,7- diazaspiro[3.5]nonane-2-
carboxamide 524.2 (M + H) *purified by C18 reverse phase
chromatography (5-90% ACN/water as the gradient eluent)
Example 503
##STR00713##
[1238]
4-(6-(2-benzyl-2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-met-
hyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
[1239] A room temperature solution of tert-butyl
7-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridin-2-yl)-2,7-diazaspiro[3.5]nonane-2-carboxylate (Example 214;
56 mg, 0.11 mmol) in DCM (4.0 mL) was treated with TFA (2 mL, 26
mmol). The reaction mixture was stirred for 30 min at room
temperature, then concentrated in vacuo to afford the title
compound as the putative TFA salt (45 mg, quantitative yield). This
material was carried on to Step 2 without further purification. MS
(apci) m/z=425.2 (M+H)
Step 2: Preparation of
4-(6-(2-benzyl-2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1240] A room temperature solution of
4-(6-(2,7-diazaspiro[3.5]nonan-7-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate
(45 mg, 0.1 mmol) in DMF (2 mL) was treated sequentially with
benzyl bromide (40.3 .mu.L, 0.317 mmol) and TEA (102 .mu.L, 0.754
mmol). The reaction mixture was stirred overnight at room
temperature, and then additional benzyl bromide (37.7 .mu.L, 0.339
mmol) and TEA (30.6 .mu.L, 0.226 mmol) were added. The resulting
mixture was stirred for another 5 h at room temperature. The
reaction mixture was diluted with EtOAc, and washed with water. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (eluting with a stepped
gradient of DCM/MeOH (50:1) then DCM/MeOH (25:1)) to cleanly afford
the title compound (10 mg, 18% yield). MS (apci) m/z=515.2
(M+H).
Example 504
##STR00714##
[1241] tert-Butyl
9-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idine-2-yl)-2,9-diazaspiro[5.5]undecane-2-carboxylate
[1242] In a microwave vessel, a room temperature solution of
tert-butyl 2,9-diazaspiro[5.5]undecane-2-carboxylate (95.89 mg,
0.3770 mmol) and DIEA (43.89 .mu.L, 0.2513 mmol) in DMSO (1.00 mL)
was treated with
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
in-3-carbonitrile (Intermediate P6; 40.00 mg, 0.1257 mmol) and
subjected to microwave irradiation for 2 h at 125.degree. C. After
cooling to room temperature, the reaction mixture was directly
purified by reverse-phase preparative HPLC (using 10 to 80%
ACN/water as the gradient eluent) to afford the title compound (10
mg, 14% yield). MS (apci) m/z=553.3 (M+H).
[1243] The compounds in Table VV were prepared according the method
described for the synthesis of Example 504, replacing tert-butyl
2,9-diazaspiro[5.5]undecane-2-carboxylate with the appropriate
amine starting material. Reactions were monitored by LCMS, and
reaction times were adjusted as necessary. Products were purified
by reverse-phase preparative HPLC utilizing an appropriate gradient
eluent to cleanly afford the title compounds.
TABLE-US-00053 TABLE VV MS (apci) Ex. # Structure Chemical Name m/z
505 ##STR00715## 6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-
(tetrahydrofuran-3- yl)piperazin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile bis(2,2,2- trifluoroacetate) 455.2 (M +
H) 506 ##STR00716## tert-butyl (2-(4-(5-(3- cyano-6-(1-methyl-1H-
pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-
yl)piperazin-1- yl)ethyl)carbamate 528.2 (M + H) 507 ##STR00717##
6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4- (phenylamino)piperidin-
1-yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 475.2 (M
+ H) 508 ##STR00718## 6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(4-
phenoxypiperidin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 476.1 (M + H) 509 ##STR00719##
4-(6-(4-(4- chlorophenoxy)piperidin- 1-yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
509.9 (M + H) 510 ##STR00720## 4-(6-(4-hydroxy-4-
(trifluoromethyl)piperidin- 1-yl)pyridin-3-yl)-6-
(1-methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate 468.3 (M + H) 511 ##STR00721## tert-butyl
9-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-3,9- diazaspiro[5.5]undecane-
3-carboxylate 553.3 (M + H) 512 ##STR00722## tert-butyl
2-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,9- diazaspiro[5.5]undecane-
9-carboxylate 553.3 (M + H) 513 ##STR00723## tert-butyl
8-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-1,8- diazaspiro[4.5]decane-1-
carboxylate 539.2 (M + H) 514 ##STR00724## tert-butyl
7-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-1,7- diazaspiro[4.5]decane-1-
carboxylate 539.2 (M + H) 515 ##STR00725## tert-butyl
7-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-1,7- diazaspiro[3.5]nonane-
1-carboxylate 525.2 (M + H) 516 ##STR00726## tert-butyl (7-(5-(3-
cyano-6-(1-methyl-1H- pyrazol-4- yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-7- azaspiro[3.5]nonan-2- yl)carbamate
539.2 (M + H) 517 ##STR00727## tert-butyl 2-(5-(3-cyano-
6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,8- diazaspiro[4.5]decane-8-
carboxylate 539.2 (M + H) 518 ##STR00728## tert-butyl
2-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,7- diazaspiro[4.5]decane-7-
carboxylate 539.3 (M + H) 519 ##STR00729## tert-butyl
7-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,7- diazaspiro[4.4]nonane-
2-carboxylate 525.2 (M + H) 520 ##STR00730## tert-butyl
7-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-1,7- diazaspiro[4.4]nonane-
1-carboxylate 525.2 (M + H) 521 ##STR00731## tert-butyl
6-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,6- diazaspiro[3.4]octane-2-
carboxylate 511.1 (M + H) 522 ##STR00732## tert-butyl
2-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,6- diazaspiro[3.5]nonane-
6-carboxylate 525.2 (M + H) 523 ##STR00733## tert-butyl
2-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,5- diazaspiro[3.5]nonane-
5-carboxylate 525.2 (M + H) 524 ##STR00734## tert-butyl
2-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,5- diazaspiro[3.4]octane-5-
carboxylate 511.1 (M + H) 525 ##STR00735## benzyl 2-(5-(3-cyano-6-
(1-methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-
yl)-2,5- diazaspiro[3.4]octane-5- carboxylate 2,2,2-
trifluoroacetate 545.3 (M + H) 526 ##STR00736## tert-butyl
6-(5-(3-cyano- 6-(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridin-4-yl)pyridin-2- yl)-2,6- diazaspiro[3.3]heptane-
2-carboxylate 497.1 (M + H) 527 ##STR00737## 4-(6-(7-oxa-2-
azaspiro[3.5]nonan-2- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate
426.1 (M + H) 528 ##STR00738## 4-(6-(6-oxa-2- azaspiro[3.4]octan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 412.1 (M + H) 529
##STR00739## 4-(6-(7-oxa-2- azaspiro[4.5]decan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 440.2 (M + H) 530 ##STR00740##
4-(6-(2-oxa-7- azaspiro[4.4]nonan-7- yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate 426.2 (M + H) 531 ##STR00741##
4-(6-(3-hydroxy-3- (trifluoromethyl)pyrrolidin-
1-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 454.2 (M + H) 532
##STR00742## 4-(6-(2-(4- fluorophenyl)pyrrolidin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 464.2 (M + H) 533
##STR00743## 6-(1-methyl-1H-pyrazol- 4-yl)-4-(6-(3-
phenylpyrrolidin-1- yl)pyridin-3- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 446.2 (M + H) 534
##STR00744## 4-(6-(4-(4- chlorophenyl)piperidin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate 494.3 (M + H) 535
##STR00745## 4-(6-(4-benzylpiperidin- 1-yl)pyridin-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3-carbonitrile
474.1 (M + H) 536 ##STR00746## 4-(6-(4-(4- chlorobenzyl)piperidin-
1-yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3-carbonitrile 508.0 (M + H)
Example 537
##STR00747##
[1244]
4-(6-(2,9-diazaspiro[5.5]undecan-9-yl)pyridin-3-yl)-6-(l-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[1245] A room temperature mixture of tert-butyl
9-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,9-diazaspiro[5.5]undecane-2-carboxylate (Example 504,
3 mg, 0.005 mmol) in DCM (133 .mu.L) was treated with HCl in iPrOH
[5 N, IPA](109 .mu.L, 0.543 mmol). After stirring at room
temperature for 2 h, the reaction mixture was concentrated in vacuo
to afford the title compound (2.85 mg, 98% yield). MS (apci)
m/z=453.2 (M+H).
[1246] The compounds in Table WW were prepared according to the
method described for the synthesis of Example 537, replacing
9-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridine-2-yl)-2,9-diazaspiro[5.5]undecane-2-carboxylate with the
appropriate t-Butylcarboxylate from Table VV. Reactions were
monitored by LCMS, and timing of additions, and reaction times were
adjusted as necessary. Products were isolated by vacuum filtration,
cleanly providing the title compounds.
TABLE-US-00054 TABLE WW MS (apci) Ex. # Structure Chemical Name m/z
538 ##STR00748## 4-(6-(4-(2- aminoethyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 428.1 (M
+ H) 539 ##STR00749## 4-(6-(3,9- diazaspiro[5.5]undecan-3-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 453.2 (M
+ H) 540 ##STR00750## 4-(6-(2,9- diazaspiro[5.5]undecan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 453.2 (M
+ H) 541 ##STR00751## 4-(6-(1,8- diazaspiro[4.5]decan-8-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 439.1 (M
+ H) 542 ##STR00752## 4-(6-(1,7- diazaspiro[4.5]decan-7-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 439.2 (M
+ H) 543 ##STR00753## 4-(6-(1,7- diazaspiro[3.5]nonan-7-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 425.1 (M
+ H) 544 ##STR00754## 4-(6-(2-amino-7- azaspiro[3.5]nonan-7-
yl)pyridin-3-yL)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 439.2 (M
+ H) 545 ##STR00755## 4-(6-(2,8- diazaspiro[4.5]decan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 439.1 (M
+ H) 546 ##STR00756## 4-(6-(2,7- diazaspiro[4.5]decan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 439.2 (M
+ H) 547 ##STR00757## 4-(6-(2,7- diazaspiro[4.4]nonan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 425.2 (M
+ H) 548 ##STR00758## 4-(6-(1,7- diazaspiro[4.4]nonan-7-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 425.1 (M
+ H) 549 ##STR00759## 4-(6-(2,6- diazaspiro[3.4]octan-6-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 411.1 (M
+ H) 550 ##STR00760## 4-(6-(2,7- diazaspiro[3.5]nonan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 425.1 (M
+ H) 551 ##STR00761## 4-(6-(2,6- diazaspiro[3.5]nonan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 425.1 (M
+ H) 552 ##STR00762## 4-(6-(2,5- diazaspiro[3.5]nonan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 425.1 (M
+ H) 553 ##STR00763## 4-(6-(2,5- diazaspiro[3.4]octan-2-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 411.1 (M
+ H)
Example 554
##STR00764##
[1247]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(7-methyl-2,7-diazaspiro[3.5]nona-
n-2-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1248] A room temperature solution of
4-(6-(2,7-diazaspiro[3.5]nonan-2-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (5 mg,
0.012 mmol) in dry DMF (200 .mu.L) and TEA (16 .mu.L, 0.12 mmol)
was treated with 0.1 M iodomethane in MTBE (240 .mu.L, 0.024 mmol).
The reaction mixture was stirred overnight at room temperature, and
then purified directly by C18 reverse phase chromatography (10-99%
ACN/Water as the gradient eluent) to afford the title compound (1.7
mg, 33% yield). MS (apci) m/z=439.1 (M+H).
[1249] The compounds in Table XX were prepared according to the
method described for the synthesis of 554 (except where noted),
replacing
4-(6-(2,7-diazaspiro[3.5]nonan-2-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride with
the appropriate amine dihydrochloride starting from Table WW.
Reactions were monitored by LCMS, and reaction times and
temperatures were adjusted accordingly. The title compounds were
cleanly isolated following C18 reverse phase chromatography
utilizing an appropriate gradient eluent.
TABLE-US-00055 TABLE XX MS (apci) Ex # Structure Chemical Name m/z
555 ##STR00765## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(9-methyl-2,9-
diazaspiro[5.5]undecan-2- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 467.2 (M + H) 556 ##STR00766##
6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(2-methyl-2,9-
diazaspiro[5.5]undecan-9- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 467.2 (M + H) 557* ##STR00767## 4-(6-(1-methyl-1,7-
diazaspiro[4.5]decan-7- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 453.2 (M + H)
*Additional iodomethane (1 eq), TEA (1 eq) and DMF were added after
24 h, and after an additional 48 h reaction mixture was purified as
noted in all other cases.
Example 558
##STR00768##
[1250]
4-(6-(2-benzyl-2,6-diazaspiro[3.4]octan-6-yl)pyridin-3-yl)-6-(1-met-
hyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1251] A room temperature solution of
4-(6-(2,6-diazaspiro[3.4]octan-6-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol--
4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 549; 25 mg, 0.052 mmol) in DMF (2 mL) was treated
sequentially with benzyl bromide (20 .mu.L, 0.32 mmol) and TEA (721
.mu.L, 0.517 mmol). The reaction mixture was stirred for 1 h at
room temperature, then diluted with EtOAc and washed with water.
The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (eluting with a stepped
gradient of DCM/MeOH (50:1) then DCM/MeOH (25:1)) to cleanly afford
the title compound (8 mg, 31% yield). MS (apci) m/z=501.2
(M+H).
Example 559
##STR00769##
[1252]
4-(6-(2,6-diazaspiro[3.3]heptan-2-yl)pyridin-3-yl)-6-(1-methyl-1H-p-
yrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1253] (1S,4S)-tert-butyl
5-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate (Example
526; 7.5 mg, 0.015 mmol) was dissolved in 1:1 DCM/TFA (0.3 mL). The
reaction mixture was diluted with 4:1 DCM/iPrOH and extracted with
saturated NaHCO.sub.3. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo to cleanly afford the title compound (6 mg, quantitative
yield). MS (apci) m/z=397.1 (M+H).
Example 560
##STR00770##
[1254]
4-(6-(6-benzyl-2,6-diazaspiro[3.3]heptan-2-yl)pyridin-3-yl)-6-(1-me-
thyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1255] A room temperature solution of
4-(6-(2,6-diazaspiro[3.3]heptan-2-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-
-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 559; 6.0 mg,
0.0151 mmol) in DCM (0.3 mL) was treated sequentially with TEA
(10.3 .mu.L, 0.755 mmol) and benzyl bromide (5.39 .mu.L, 0.0454
mmol). The reaction mixture was stirred for 16 h at room
temperature and then concentrated in vacuo. The residue was
purified by C18 reverse phase chromatography (5-95% water/ACN with
0.1% TFA as the gradient eluent) to afford the title compound as
the TFA salt. The TFA salt was suspended in 4:1 DCM/iPrOH and
extracted with saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to cleanly afford the title compound (4.4 mg,
54% yield). MS (apci) m/z=487.2 (M+H).
Example 561
##STR00771##
[1256]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-(2-hydroxyethyl)-N-isopropylpiperidine-4-carboxamide
2,2,2-trifluoroacetate
[1257] 2-(Isopropylamino)ethanol (0.014 mL, 0.12 mmol), DIEA (0.051
mL, 0.29 mmol), and HATU (45 mg, 0.12 mmol) were added sequentially
to a room temperature solution of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid (Example 231, Step 1; 25 mg,
0.058 mmol) in DMA (2 mL). After stirring at room temperature
overnight, the reaction mixture was quenched with water and then
extracted with EtOAc. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, concentrated in vacuo and
purified by C18 reverse phase chromatography (5-95% water/ACN with
0.1% TFA as the gradient eluent) to afford the title compound as
the TFA salt (4.7 mg, 15% yield). MS (apci) m/z=513.3 (M+H).
Example 562
##STR00772##
[1258]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-
-yl)pyridine-2-yl)-N,N-dimethylpiperidine-4-carb oxamide
2,2,2-trifluoroacetate
[1259] The title compound was isolated as a byproduct of the
reaction of Example 561 (8.8 mg, 33% yield). MS (apci) m/z=455.2
(M+H).
Example 563
##STR00773##
[1260]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-(cyclopropylmethoxy)piperidine-4-carboxamide
[1261] O-Cyclopropylmethyl-hydroxylamine hydrochloride (0.015 g,
0.12 mmol), DIEA (0.061 mL, 0.35 mmol), and HATU (45 mg, 0.12 mmol)
were added sequentially to a solution
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-carboxylic acid (Example 231, Step 1; 25 mg,
0.058 mmol) in DMA (2 mL). After stirring at ambient temperature
overnight, the reaction mixture was quenched with water and
extracted with EtOAc. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, concentrated in vacuo, and
purified by silica chromatography (0-50% of 20% MeOH/DCM in EtOAc
as the gradient eluent) to afford the title compound (8.5 mg, 28%
yield). MS (apci) m/z=497.2 (M+H).
[1262] The compounds in Table YY were prepared according to the
method described for the synthesis of Example 563, replacing
O-Cyclopropylmethyl-hydroxylamine hydrochloride with the
appropriate amines. Reactions were monitored by LCMS, and reaction
times were adjusted accordingly. The title compounds were cleanly
isolated following silica chromatography utilizing an appropriate
gradient eluent.
TABLE-US-00056 TABLE YY MS (apci) Ex # Structure Chemical Name m/z
564 ##STR00774## 1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-yl)-N-
methoxypiperidine-4- carboxamide 457.2 (M + H) 565 ##STR00775##
N-(tert-butoxy)-1-(5-(3- cyano-6-(1-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridin-4-yl)pyridin-2-
yl)piperidine-4- carboxamide 499.3 (M + H) 566 ##STR00776##
1-(5-(3-cyano-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridin-
4-yl)pyridin-2-yl)-N-(2- hydroxyethoxy)piperidine- 4-carboxamide
487.2 (M + H)
Example 567
##STR00777##
[1263] 6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(methyl
sulfonyl)piperidin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1264] A room temperature solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.030 g, 0.094 mmol) in DMSO
(6.28 mL) was treated with 4-(methylsulfonyl)piperidine (0.062 g,
0.38 mmol) and K.sub.2CO.sub.3 (0.10 g, 0.75 mmol) and stirred
overnight at 80.degree. C. The reaction mixture was adjusted to pH
7 with the addition of saturated NaHCO.sub.3. The resulting
suspension was vacuum filtered and rinsed with water to afford the
title compound (26 mg, 57% yield). MS (apci) m/z=462.1 (M+H).
Example 568
##STR00778##
[1265]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperidine-4-sulfonic acid
[1266] A room temperature solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.100 g, 0.314 mmol) in DMSO
(2.4 mL) was treated with piperidine-4-sulfonic acid (0.16 g, 0.94
mmol) and K.sub.2CO.sub.3 (0.13 g, 0.94 mmol), then stirred
overnight at 110.degree. C. The reaction mixture was adjusted to pH
7 with 1 M HCl. The resulting suspension was vacuum filtered
through a nylon membrane and rinsed with water to afford the title
compound (85 mg, 78% yield). MS (apci) m/z=462.1 (M-H).
Example 569
##STR00779##
[1267]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-isopropylpiperidine-4-sulfonamide
Step 1: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-sulfonyl chloride
[1268] A room temperature mixture of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperidine-4-sulfonic acid (Example 568; 0.025 g, 0.054
mmol) in DCE (1.1 mL) was treated sequentially with SOCl.sub.2
(0.020 mL, 0.27 mmol) and DMF (0.027 mL, 0.054 mmol). The resulting
mixture was stirred for 3 h at reflux, and then cooled to room
temperature. The reaction mixture was concentrated in vacuo to
afford the crude title compound (25 mg, 96% yield), which was used
directly in the next step without further purification.
Step 2: Preparation of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)-N-isopropylpiperidine-4-sulfonamide
[1269] A room temperature solution of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridine-2-yl)piperidine-4-sulfonyl chloride (from Step 1; 25 mg,
0.052 mmol) in DCM (2.6 mL) and DIEA (45 .mu.L, 0.259 mmol) was
treated with isopropyl amine (8.9 .mu.L, 0.10 mmol). After stirring
overnight at room temperature, the reaction mixture was quenched
with water and extracted with DCM. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica gel
(0-10% MeOH in DCM) to afford the title compound (12.2 mg, 45%
yield). MS (apci) m/z=505.2 (M+H)
Example 570
##STR00780##
[1270]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridin-2-ylmethyl)piperidin--
1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1271] In a microwave vessel, a room temperature solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 30 mg, 0.094 mmol) in DMSO
(471 .mu.L) was treated with 2-(piperidin-4-ylmethyl)pyridine
dihydrochloride (35 mg, 0.14 mmol) and K.sub.2CO.sub.3 (39 mg, 0.28
mmol). The resulting mixture was subjected to microwave irradiation
for 1 h at 100.degree. C., and then for 12 h at 150.degree. C. The
reaction mixture was cooled to room temperature, and filtered. The
filtrate was purified directly by C18 reverse phase chromatography
(5-40% ACN/water) to afford the title compound (15 mg, 33% yield).
MS (apci) m/z=475.2 (M+H).
Example 571
##STR00781##
[1272]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)azetidine-3-carboxylic acid
[1273] A room temperature solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.300 g, 0.942 mmol) in DMSO
(9.42 mL) was treated with azetidine-3-carboxylic acid (0.381 g,
3.77 mmol) and K.sub.2CO.sub.3(s) (0.521 g, 3.77 mmol), then
stirred overnight at 110.degree. C. The reaction mixture was
acidified to pH 7 with 1 M HCl. The resulting suspension was vacuum
filtered, and the solids were washed with water to cleanly afford
the title compound (0.281 g, 74.6% yield). MS (apci) m/z=400.2
(M+H).
Example 572
##STR00782##
[1274]
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)-N-isopropylazetidine-3-carboxamide
[1275] A room temperature solution of
1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)azetidine-3-carboxylic acid (Example 571; 25 mg, 0.0626
mmol) in DMA (2.09 mL) was added DIEA (54.5 .mu.L, 0.313 mmol),
propan-2-amine (7.4 mg, 0.125 mmol) and HATU (47.6 mg, 0.125 mmol).
The reaction mixture was allowed to stir overnight at room
temperature. The reaction mixture was quenched with water and
extracted with EtOAc. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The residue was purified by silica chromatography (0-50% gradient
of 20% MeOH/DCM in EtOAc as the eluent) to afford the title
compound (8.7 mg, 31% yield). MS (apci) m/z=441.2 (M+H).
Example 573
##STR00783##
[1276]
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)azetidin-3-yl)acetic acid
[1277] A room temperature solution of
4-(6-fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.225 g, 0.707 mmol) in DMSO
(7.07 mL) was treated with azetidin-3-yl-acetic acid hydrochloride
(0.4296 g, 2.83 mmol) and K.sub.2CO.sub.3 (0.782 g, 5.66 mmol),
then stirred overnight at 110.degree. C. The reaction mixture was
acidified to pH 7 with 1 M HCl. The resulting suspension was vacuum
filtered, and the solids were washed with water to cleanly afford
the title compound (0.393 g, quantitative yield). MS (apci)
m/z=414.2 (M+H).
Example 574
##STR00784##
[1278]
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)azetidin-3-yl)-N-isopropylacetamide
[1279] A room temperature solution of
2-(1-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)-
pyridin-2-yl)azetidin-3-yl)acetic acid (Example 573; 50 mg, 0.121
mmol) in DMA (2.42 mL) was treated with DIEA (0.105 mL, 0.605
mmol), propan-2-amine (14.3 mg, 0.242 mmol) and HATU (92.0 mg,
0.242 mmol). The reaction mixture was allowed to stir overnight at
room temperature. The reaction mixture was quenched with water and
extracted with EtOAc. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The residue was purified by silica chromatography (0-50% gradient
of 20% MeOH/DCM in EtOAc as the eluent) to afford the title
compound (4.6 mg, 8% yield). MS (apci) m/z=455.2 (M+H).
Example 575
##STR00785##
[1280]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperidin-4-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile
[1281] A room temperature solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 55.3 mg, 0.150 mmol) in
4:1 dioxane/water (1.5 mL) was treated with
2-(piperidin-4-yl)pyridine-5-boronic acid (61.4 mg, 0.298 mmol),
Pd.sub.2(dba).sub.3 (6.82 mg, 0.00745 mmol), XPhos (14.2 mg, 0.0298
mmol), and K.sub.2CO.sub.3 (61.8 mg, 0.447 mmol). The reaction
mixture was sparged with Argon, sealed, and then stirred 16 h at
100.degree. C. After cooling to room temperature, the reaction
mixture was diluted with 4:1 DCM/iPrOH and washed with water. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by C18 reverse phase chromatography (5-95% water/ACN
with 0.1% TFA as the gradient eluent) to afford the title compound
as the TFA salt. The TFA salt was suspended in 4:1 DCM/iPrOH and
extracted with saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to cleanly afford the title compound (18.1
mg, 32% yield). MS (apci) m/z=384.1 (M+H).
Example 576
##STR00786##
[1282]
4-(6-(1-benzylpiperidin-4-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1283] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperidin-4-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (Example 575; 18.1 mg, 0.0472 mmol) in
DCM (1.0 mL) was treated sequentially with TEA (32.0 .mu.L, 0.236
mmol) and benzyl bromide (16.8 .mu.L, 0.142 mmol). The reaction
mixture was stirred for 16 h at room temperature and then
concentrated in vacuo. The residue was purified by C18 reverse
phase chromatography (5-95% water/ACN with 0.1% TFA as the gradient
eluent) to afford the title compound as the TFA salt. The TFA salt
was suspended in 4:1 DCM/iPrOH and extracted with saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (15.6 mg, 70% yield). MS (apci)
m/z=474.2 (M+H).
Example 577
##STR00787##
[1284]
4-(6-(azetidin-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyraz-
olo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
3-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)azetidine-1-carboxylate
[1285] A room temperature solution of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl
trifluoromethanesulfonate (Intermediate P5; 89.5 mg, 0.241 mmol) in
4:1 dioxane:water (2.5 mL) was treated with tert-butyl
3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-yl)azetidine-
-1-carboxylate (Intermediate R13; 174 mg, 0.482 mmol),
Pd.sub.2(dba).sub.3 (11.0 mg, 0.0120 mmol), XPhos (23 mg, 0.0482
mmol), and K.sub.2CO.sub.3 (100 mg, 0.723 mmol). The reaction
mixture was sparged with Argon, sealed, and stirred 16 h at
100.degree. C. After cooling to room temperature, the reaction
mixture was diluted with 4:1 DCM/iPrOH and washed with water. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by C18 reverse phase chromatography (5-95% water/ACN
with 0.1% TFA as the gradient eluent) to afford the title compound
as the TFA salt. The TFA salt was suspended in 4:1 DCM/iPrOH and
extracted with saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to afford the title compound. MS (apci)
m/z=356.1 ((M-Boc)+1).
Step 2: Preparation of
4-(6-(3,8-Diazabicyclo[3.2.1]octan-8-yl)pyridine-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1286] The tert-butyl
3-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridine-2-yl)azetidine-1-carboxylate was diluted with 1:1 DCM/TFA
(2.0 mL), stirred for 30 min at room temperature, and then
concentrated in vacuo. The residue was purified by C18 reverse
phase chromatography (5-95% water/ACN with 0.1% TFA as the gradient
eluent) to afford the title compound as the TFA salt. The TFA salt
was suspended in 4:1 DCM/iPrOH and extracted with saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (12.7 mg, 15% yield). MS (apci)
m/z=356.1 (M+H).
[1287] The compounds in the Table ZZ were prepared according to the
method described for the synthesis of Example 577, replacing
tert-butyl
3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-yl)azetidine-
-1-carboxylate in Step 1, with the appropriate boronate ester from
Table DD. Reaction progression was followed by LCMS, and reaction
times were adjusted as necessary. Products in each step were
purified according to method described for the synthesis of Example
577, employing the appropriate stationary phase and gradient
eluent.
TABLE-US-00057 TABLE ZZ MS (apci) Ex # Structure Chemical Name m/z
578 ##STR00788## 6-(1-methyl-1H-pyrazol-4- yl)-4-(6-(pyrrolidin-3-
yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 370.1 (M +
H) 579 ##STR00789## 6-(1-methyl-1H-pyrazol-4-
yl)-4-(6-(piperidin-3- yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 384.2 (M + H)
Example 580
##STR00790##
[1288]
4-(6-(1-benzylazetidin-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4--
yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1289] A room temperature solution of
4-(6-(azetidin-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine-3-carbonitrile (Example 577; 12.7 mg, 0.0357 mmol) in
DCM (0.7 mL) was treated sequentially with TEA (24.2 .mu.L, 0.179
mmol) and benzyl bromide (12.7 L, 0.107 mmol). The reaction mixture
was stirred for 16 h at room temperature, and then concentrated in
vacuo. The residue was purified by C18 reverse phase chromatography
(5-95% water/ACN with 0.1% TFA as the gradient eluent) to afford
the title compound as the TFA salt. The TFA salt was suspended in
4:1 DCM/iPrOH and extracted with saturated NaHCO.sub.3. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to cleanly
afford the title compound (4.1 mg, 26% yield). MS (apci) m/z=446.2
(M+H).
[1290] The compounds in the Table AAA were prepared according to
the method described for the synthesis of Example 580, replacing
4-(6-(azetidin-3-yl)pyridine-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile with the appropriate amine from Table
ZZ. Products were purified according to the method described for
the synthesis of Example 580, employing the appropriate gradient
eluent.
TABLE-US-00058 TABLE AAA MS (apci) Ex # Structure Chemical Name m/z
581 ##STR00791## 4-(6-(1-benzylpiperidin-3- yl)pyridine-3-yl)-6-(1-
methyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
474.2 (M + H) 582 ##STR00792## 4-(6-(1-benzylpyrrolidin-3-
yl)pyridine-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 460.2 (M + H)
Example 583
##STR00793##
[1291]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(1-((tetrahydro-2H-pyran-4-yl)met-
hyl)pyrrolidin-3-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1292] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(pyrrolidin-3-yl)pyridin-3-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile (Example 578; 31.3 mg, 0.0847 mmol)
in 1:1 DCM/MeOH (1.7 mL) was treated with 4-formyltetrahydropyran
(19.3 mg, 0.169 mmol), NaBH(AcO).sub.3 (35.9 mg, 0.169 mmol) and a
drop of acetic acid. The reaction mixture was allowed to stir 16 h
at room temperature. The reaction mixture was purified directly by
C18 reverse phase chromatography (5->95% water/ACN with 0.1%
TFA) to afford the title compound as the TFA salt. The TFA salt was
suspended in 4:1 DCM/iPrOH and extracted with saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (29.0 mg, 73% yield). MS (apci)
m/z=468.2 (M+H).
Example 584
##STR00794##
[1293]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(1-(pyrimidin-2-ylmethyl)pyrrolid-
in-3-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1294] Following a method similar to that used for Example 583, but
replacing 4-formyltetrahydropyran with pyrimidine carboxaldehyde,
the title compound was isolated cleanly (24.2 mg, 46% yield). MS
(apci) m/z=462.2 (M+H).
Example 585
##STR00795##
[1295]
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-(2-isopropoxyethyl)p-
iperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1296] A room temperature solution of
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)-
pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example
266; 20 mg, 0.041 mmol) in dry DMA (400 .mu.L) was treated with TEA
(76 .mu.L, 0.55 mmol) and 2-(2-bromoethoxy)propane (0.0203 g, 0.122
mmol). The resulting reaction mixture was stirred overnight at
75.degree. C. The reaction mixture was purified directly by C18
reverse phase chromatography (15-90% ACN/Water as the eluent) to
afford the title compound (12.4 mg, 60% yield). MS (apci) m/z=507.2
(M+H).
Example 586
##STR00796##
[1297]
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1298] A room temperature solution of
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)-
pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example
266; 10 mg, 0.020 mmol) and Me.sub.4N(AcO).sub.3BH (16 mg, 0.061
mmol) in DMF (0.2 mL) was treated with picolinaldehyde (3.3 mg,
0.030 mmol) and TEA (8.5 .mu.L, 0.061 mmol). The resulting mixture
was stirred overnight at room temperature, and then purified
directly by C18 reverse phase chromatography (0-60% ACN/water as
the gradient eluent) to afford the title compound (2.4 mg, 23%
yield). MS (apci) m/z=512.2 (M+H).
Example 587
##STR00797##
[1299]
4-(6-(4-(2-isopropoxyethyl)piperazin-1-yl)pyridin-3-yl)-6-(1-methyl-
-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1300] A room temperature solution of
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 271; 21 mg,
0.046 mmol) in dry DMA (400 .mu.L) was treated with TEA (64 .mu.L,
0.46 mmol) and 2-(2-bromoethoxy)propane (23 mg, 0.138 mmol). The
resulting reaction mixture was stirred overnight at 75.degree. C.
The reaction mixture was purified directly by C18 reverse phase
chromatography (15-90% ACN/Water as the eluent) to afford the title
compound (12.4 mg, 57% yield). MS (apci) m/z=471.2 (M+H).
Example 588
##STR00798##
[1301]
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(4-(pyridine-2-ylmethyl)piperazin-
-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1302] A room temperature solution of
6-(1-methyl-1H-pyrazol-3-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 271; 10 mg,
0.022 mmol) in DMF (0.2 mL) was treated with picolinaldehyde (3.5
mg, 0.033 mmol), Me.sub.4N(AcO).sub.3BH (17 mg, 0.066 mmol) and TEA
(9.1 .mu.L, 0.066 mmol). The resulting mixture was stirred
overnight at room temperature, and then purified directly by C18
reverse phase chromatography (0-60% ACN/water as the gradient
eluent) to afford the title compound (2.3 mg, 22% yield). MS (apci)
m/z=476.2 (M+H).
Example 589
##STR00799##
[1303] tert-Butyl
4-(5-(3-cyano-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
in-4-yl)pyridine-2-yl)piperazine-1-carboxylate
[1304] A room temperature solution of
3-cyano-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-y-
l trifluoromethanesulfonate (Intermediate P19; 0.538 g, 1.13 mmol)
in dioxane (28.2 mL) was treated with tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-yl)piperazin-
e-1-carboxylate (0.658 g, 1.69 mmol) and 2 M K.sub.2CO.sub.3 (1.13
mL, 2.25 mmol), then sparged with N.sub.2 for 5 min. The reaction
mixture was treated with XPhos (0.107 g, 0.225 mmol) and
Pd.sub.2(dba).sub.3 (0.0516 g, 0.0563 mmol), then sparged with
N.sub.2 for 5 min, sealed, and stirred overnight at 80.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with water, and extracted with EtOAc. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was triturated with hexanes and
vacuum filtered to afford the title compound (0.615 g, 92% yield).
MS (apci) m/z=591.3 (M+H)
Example 590
##STR00800##
[1305]
6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridi-
ng-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1306] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
in-4-yl)pyridin-2-yl)piperazine-1-carboxylate (Example 589; 0.615
g, 1.04 mmol) in DCM (10.4 mL) was treated with TFA (5.21 mL, 1.04
mmol) and stirred for 30 min at room temperature. The reaction
mixture was concentrated in vacuo. The residue was diluted with DCM
and concentrated in vacuo to remove residual TFA. The residue was
partitioned between 10% MeOH in DCM and saturated NaHCO.sub.3, and
the aqueous phase was extracted with 10% MeOH in DCM. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo to cleanly afford the title
compound (0.489 g, 96% yield). MS (apci) m/z=491.2 (M+H).
Example 591
##STR00801##
[1307]
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyraz-
olo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of
4-(6-(4-benzylpiperazin-1-yl)-6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile
[1308] A room temperature solution of
6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl-
)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 590; 0.240 g,
0.489 mmol) in DMA (4.89 mL) was treated sequentially with TEA
(0.341 mL, 2.45 mmol) and benzyl bromide (0.116 mL, 0.978 mmol).
The reaction mixture was stirred overnight at room temperature and
then quenched with water, and the biphasic mixture was extracted
with EtOAc. The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to cleanly
afford the title compound (0.284 g, quantitative yield). MS (apci)
m/z=581.2 (M+H).
Step 2: Preparation of
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine-3-carbonitrile
[1309]
4-(6-(4-Benzylpiperazin-1-yl)pyridin-3-yl)-6-(1-(4-methoxybenzyl)-1-
H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (0.284 g,
0.489 mmol) was treated with TFA (9.78 mL, 4.89 mmol). The reaction
was stirred overnight at 70.degree. C. and then concentrated in
vacuo. The residue was diluted with DCM (15 mL) and treated with
saturated NaHCO.sub.3(60 mL) and water (5 mL). The biphasic mixture
was diluted with 20% MeOH/DCM (50 mL), and the resulting suspension
was vacuum filtered. The biphasic filtrate was separated, and the
organic phase was reserved. The aqueous extracts were washed with
20% MeOH/DCM. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The residue was purified by C18 reverse phase chromatography (0-60%
ACN/H.sub.2O as the gradient eluent) to afford the title compound
(0.221 g, 98% yield). MS (apci) m/z=461.2 (M+H).
Example 592
##STR00802##
[1310]
(R)-4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1-(3-hydroxy-2-me-
thylpropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1311] A room temperature solution of
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridine-3-carbonitrile (Example 591; 0.014 g, 0.030 mmol) in
dry DMF (1 mL) was treated with Cs.sub.2CO.sub.3 (0.050 g, 0.15
mmol) and (S)-3-bromo-2-methylpropan-1-ol (16 .mu.L, 0.15 mmol).
The resulting mixture was stirred for 6 hr at 70.degree. C., and
then quenched with water. The biphasic mixture was extracted with
DCM and then filtered through a PS frit. The combined organic
extracts then were concentrated in vacuo. The residue was purified
by C18 reverse phase chromatography (10-80% ACN/Water with 0.1%
Formic Acid as the gradient eluent) to afford the title compound
(10.6 mg, 66% yield). MS (apci) m/z=533.2 (M+H).
Example 593
##STR00803##
[1312]
(S)-4-(6-(4-benzylpiperazin-1-yl)pyridine-3-yl)-6-(1-(3-hydroxy-2-m-
ethylpropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1313] The title compound was prepared according to the method
described for the synthesis of
(R)-4-(6-(4-benzylpiperazin-1-yl)pyridine-3-yl)-6-(1-(3-hydroxy-2-methylp-
ropyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
(Example 592), replacing (S)-3-bromo-2-methylpropan-1-ol with
(R)-3-bromo-2-methylpropan-1-ol. The crude material was purified by
C18 reverse phase chromatography (10-80% ACN/Water with 0.1% Formic
Acid as the gradient eluent) to provide the title compound (17.4
mg, 56% yield). MS (apci) m/z=533.2 (M+H).
Example 594
##STR00804##
[1314] tert-butyl
3-(4-(4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-3-cyanopyrazolo[1,5-a]py-
ridine-6-yl)-1H-pyrazol-1-yl)azetidine-1-carboxylate
[1315] A room temperature solution of
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyrazolo[1,-
5-a]pyridin-3-carbonitrile (Example 591; 0.1165, 0.2530 mmol) in
dry DMF (0.5 mL) was treated with Cs.sub.2CO.sub.3 (0.3778 g, 1.159
mmol) and tert-butyl 3-((methyl
sulfonyl)oxy)azetidine-1-carboxylate (0.1271 g, 0.5059 mmol). The
resulting mixture was sealed in a pressure tube and stirred
overnight at 70.degree. C., and then quenched with water. The
biphasic mixture was extracted with EtOAc and then with CHCl.sub.3.
The combined organic extracts were concentrated in vacuo, and the
residue was purified by C18 reverse phase chromatography (5-99%,
ACN/Water as the gradient eluent) to afford the title compound (26
mg, 17% yield). MS (apci) m/z=616.2 (M+H).
Example 595
##STR00805##
[1316]
6-(1-(azetidin-3-yl)-1H-pyrazol-4-yl)-4-(6-(4-benzylpiperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[1317] A room temperature solution of tert-butyl
3-(4-(4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-3-cyanopyrazolo[1,5-a]py-
ridin-6-yl)-1H-pyrazol-1-yl)azetidine-1-carboxylate (Example 594;
0.024 g, 0.039 mmol) in dry DCM (0.2 mL) was treated with 5 M HCl
in iPrOH (39 .mu.L, 0.19 mmol). After stirring at room temperature
for 2 d, additional 5 M HCl in iPrOH (7.8 .mu.L, 0.038 mmol) was
added. The reaction mixture was stirred overnight at room
temperature and then concentrated in vacuo to afford the title
compound as the dihydrochloride salt (25 mg, quantitative yield).
MS (apci) m/z=516.2 (M+H).
Example 596
##STR00806##
[1318]
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(1-(1-isopropylazetidi-
n-3-yl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1319] A room temperature solution of
6-(1-(azetidin-3-yl)-1H-pyrazol-4-yl)-4-(6-(4-benzylpiperazin-1-yl)pyridi-
n-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 595; 0.007 g, 0.012 mmol) in dry DMF (300 .mu.L) was
treated with TEA (17 .mu.L, 0.12 mmol) and 2-iodopropane (3.6
.mu.L, 0.036 mmol). The reaction mixture was stirred overnight at
70.degree. C., then directly purified by C18 reverse phase
chromatography using 5-85% ACN/Water as the gradient eluent and
then further purified by C18 reverse phase chromatography using
70-99% ACN/Water with 0.1% Formic Acid as the gradient eluent to
afford the title compound (1.6 mg, 24% yield). MS (apci) m/z=558.2
(M+H).
Example 597
##STR00807##
[1320]
1-(5-(3-cyano-6-(1,5-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-4-ethyl-N-isopropylpiperidine-4-carboxamide
[1321] A room temperature solution of
3-cyano-6-(1,5-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P21; 0.030 g, 0.078 mmol)
in dioxane (1.95 mL) was treated with
(6-(4-ethyl-4-(isopropylcarbamoyl)piperidin-1-yl)pyridin-3-yl)boronic
acid (Intermediate R17; 0.037 g, 0.12 mmol) and 2 M K.sub.2CO.sub.3
(0.078 mL, 0.16 mmol), then sparged with N.sub.2 for 5 min. The
reaction mixture was treated with XPhos (0.0074 g, 0.016 mmol) and
Pd.sub.2(dba).sub.3 (0.0036 g, 0.0039 mmol), then sparged with
N.sub.2 for 5 min, sealed, and stirred overnight at 80.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with water and extracted with EtOAc. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica gel
(0-10% MeOH in DCM) to afford the title compound (0.0187 g, 47%
yield). MS (apci) m/z=511.3 (M+H).
Example 598
##STR00808##
[1322]
(S)-6-(1,5-dimethyl-1H-pyrazol-4-yl)-4-(6-(4-(3-methoxypyrrolidine--
1-carbonyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1323] A room temperature solution of
3-cyano-6-(1,5-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P21; 0.030 g, 0.078 mmol)
in dioxane (1.95 mL) was treated with
(S)-(6-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyridine-3-yl)b-
oronic acid (Intermediate R18; 0.039 g, 0.12 mmol) and 2 M
K.sub.2CO.sub.3 (0.078 mL, 0.16 mmol), then sparged with N.sub.2
for 5 min. The reaction mixture was treated with XPhos (0.0074 g,
0.016 mmol) and Pd.sub.2(dba).sub.3 (0.0036 g, 0.0039 mmol), then
sparged with N.sub.2 for 5 min, sealed, and stirred overnight at
80.degree. C. After cooling to room temperature, the reaction
mixture was diluted with water, and extracted with EtOAc. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The residue
was purified by silica chromatography (0-50% gradient of 20%
MeOH/DCM in EtOAc as the gradient eluent) to afford the title
compound (24.2 mg, 57% yield). MS (apci) m/z=526.3 (M+H).
Example 599
##STR00809##
[1324]
1-(5-(3-cyano-6-(1,3-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-4-ethyl-N-isopropylpiperidine-4-carboxamide
[1325] A room temperature solution of
3-cyano-6-(1,3-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P23; 0.030 g, 0.078 mmol)
in dioxane (1.95 mL) was treated with
(6-(4-ethyl-4-(isopropylcarbamoyl)piperidin-1-yl)pyridine-3-yl)boronic
acid (Intermediate R17; 0.037 g, 0.12 mmol) and 2 M K.sub.2CO.sub.3
(0.078 mL, 0.16 mmol), then sparged with N.sub.2 for 5 min. The
reaction mixture was treated with XPhos (0.0074 g, 0.016 mmol) and
Pd.sub.2(dba).sub.3 (0.0036 g, 0.0039 mmol), then sparged with
N.sub.2 for 5 min, sealed, and stirred overnight at 80.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with water and extracted with EtOAc. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica
chromatography (0-50% gradient of 20% MeOH/DCM in EtOAc as the
eluent) to afford the title compound (0.0357 g, 89% yield). MS
(apci) m/z=511.3 (M+H).
Example 600
##STR00810##
[1326]
(S)-6-(1,3-dimethyl-1H-pyrazol-4-yl)-4-(6-(4-(3-methoxypyrrolidine--
1-carbonyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1327] A room temperature solution of
3-cyano-6-(1,3-dimethyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl
trifluoromethanesulfonate (Intermediate P23; 0.030 g, 0.078 mmol)
in dioxane (1.9 mL) was treated with
(S)-(6-(4-(3-methoxypyrrolidine-1-carbonyl)piperazin-1-yl)pyridine-3-yl)b-
oronic acid (Intermediate R18; 0.039 g, 0.12 mmol) and 2 M
K.sub.2CO.sub.3 (0.078 mL, 0.16 mmol) and sparged with N.sub.2 for
5 min. The reaction mixture was treated with XPhos (0.0074 g, 0.016
mmol) and Pd.sub.2(dba).sub.3 (0.0036 g, 0.0039 mmol), then sparged
with N.sub.2 for 5 min, sealed, and stirred overnight at 80.degree.
C. After cooling to room temperature, the reaction mixture was
diluted with water and extracted with EtOAc. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica
chromatography (0-50% gradient of 20% MeOH/DCM in EtOAc as the
eluent) to afford the title compound (7.7 mg, 19% yield). MS (apci)
m/z=526.3 (M+H).
Example 601
##STR00811##
[1328]
6-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-(1-ethyl-3-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-
-4-yl)pyridin-2-yl)piperazine-1-carboxylate
[1329] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridine-4-
-yl)pyridine-2-yl)piperazine-1-carboxylate (Intermediate P14; 98.6
mg, 0.178 mmol) in 4:1 dioxane/water (2.0 mL) was treated with
1-ethyl-3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyraz-
ole (Intermediate R22; 46.3 mg, 0.196 mmol), Pd.sub.2(dba).sub.3
(8.17 mg, 0.00892 mmol), XPhos (17.0 mg, 0.0357 mmol) and
K.sub.2CO.sub.3(s) (74.0 mg, 0.535 mmol). The reaction mixture was
sparged with Argon, sealed, and stirred for 16 h at 100.degree. C.
After cooling to room temperature, the reaction mixture was diluted
with 4:1 DCM/iPrOH and washed with water. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica
chromatography (5-60% DCM-Acetone as the gradient eluent) to afford
the title compound (44.6 mg, 61% yield). MS (apci) m/z=413.2
(M+H).
Step 2: Preparation of
6-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile
[1330] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(1-ethyl-3-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-
-4-yl)pyridine-2-yl)piperazine-1-carboxylate (Step 1; 44.6 mg,
0.108 mmol) in 1:1 DCM/TFA (3.0 mL) was stirred for 30 min at room
temperature and then concentrated in vacuo. The residue was
purified by silica chromatography (5-95% water/ACN with 0.1% TFA as
the gradient eluent) to afford the title compound as the TFA salt.
The TFA salt was suspended in 4:1 DCM/iPrOH and extracted with
saturated NaHCO.sub.3. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo to cleanly afford the title compound (44.6 mg, 61% yield). MS
(apci) m/z=591.3 (M+H).
[1331] The compounds in Table BBB were prepared according to the
method described for the synthesis of Example 601, replacing
1-ethyl-3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyraz-
ole with the appropriate boronate ester starting materials from
Table EE. Reactions were monitored by LCMS, and reaction times were
adjusted accordingly.
TABLE-US-00059 TABLE BBB MS (apci) Ex # Structure Chemical Name m/z
602 ##STR00812## 6-(3-ethyl-1-methyl-1H- pyrazol-4-yl)-4-(6-
(piperazin-1-yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 413.2 (M + H) 603 ##STR00813##
6-(1-isopropyl-1H-pyrazol- 4-yl)-4-(6-(piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 413.2 (M + H) 604
##STR00814## 6-(1-isobutyl-1H-pyrazol- 4-yl)-4-(6-(piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 427.2 (M +
H) 605 ##STR00815## 4-(6-(piperazin-1- yl)pyridin-3-yl)-6-(1,3,5-
trimethyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
413.2 (M + H) 606 ##STR00816## 6-(1-isopropyl-3-methyl-
1H-pyrazol-4-yl)-4-(6- (piperazin-1-yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 427.2 (M + H) 607
##STR00817## 6-(1-(tert-butyl)-3-methyl- 1H-pyrazol-4-yl)-4-(6-
(piperazin-1-yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 441.2 (M + H) 608 ##STR00818##
6-(1,3-diethyl-1H-pyrazol- 4-yl)-4-(6-(piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 427.2 (M + H)
Example 609
##STR00819##
[1332] 4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(l
1-ethyl-3-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1333] A room temperature solution of
6-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)py-
razolo[1,5-a]pyridine-3-carbonitrile (Example 601; 28.8 mg, 0.0698
mmol) in DCM (1.4 mL) was treated sequentially with TEA (47.4
.mu.L, 0.349 mmol) and benzyl bromide (24.9 .mu.L, 0.209 mmol). The
reaction mixture was stirred for 16 h at room temperature and then
concentrated in vacuo. The residue was purified by C18 reverse
phase chromatography (5-95% water/ACN with 0.1% TFA as the gradient
eluent) to afford the title compound as the TFA salt. The TFA salt
was suspended in 4:1 DCM/iPrOH and extracted with saturated
NaHCO.sub.3. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (17.9 mg, 51% yield). MS (apci)
m/z=503.2 (M+H).
[1334] Except where noted, the compounds in Table CCC were prepared
according to the method described for the synthesis of Example 609,
replacing
6-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyrid-
in-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile with the appropriate
amino starting materials. Reactions were monitored by LCMS, and
reaction times were adjusted accordingly to cleanly afford the
title compounds.
TABLE-US-00060 TABLE CCC MS (apci) Ex # Structure Chemical Name m/z
610 ##STR00820## 4-(6-(4-benzylpiperazin-1-
yl)pyridin-3-yl)-6-(3-ethyl- 1-methyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 503.2 (M + H) 611
##STR00821## 4-(6-(4-benzylpiperazin-1- yl)pyridin-3-yl)-6-(1-
isopropyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
503.2 (M + H) 612 ##STR00822## 4-(6-(4-benzylpiperazin-1-
yl)pyridin-3-yl)-6-(1- isobutyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 517.2 (M + H) 613
##STR00823## 4-(6-(4-benzylpiperazin-1- yl)pyridin-3-yl)-6-(1,3,5-
trimethyl-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
503.2 (M + H) 614* ##STR00824## 4-(6-(4-benzylpiperazin-1-
yl)pyridin-3-yl)-6-(1- isopropyl-3-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 517.3 (M + H)
615 ##STR00825## 4-(6-(4-benzylpiperazin-1-
yl)pyridin-3-yl)-6-(1,3- diethyl-1H-pyrazol-4-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile 517.3 (M + H) 616
##STR00826## 4-(6-(4-benzylpiperazin-1-
yl)pyridin-3-yl)-6-(1-(tert- butyl)-3-methyl-1H-
pyrazol-4-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 531.2 (M + H)
*Aqueous free-basing step was replaced with a silica chromatography
using 1-30% DCM/MeOH with 2% NH.sub.4OH as the gradient eluent for
free-basing the TFA salt.
Example 617
##STR00827##
[1335] tert-butyl
4-(5-(3-cyano-6-(3-cyclopropyl-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate
[1336] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridine-4-
-yl)pyridine-2-yl)piperazine-1-carboxylate (Intermediate P14; 60.0
mg, 0.11 mmol) in 4:1 dioxane/water (8 mL) was treated with
3-cyclopropyl-1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-
-pyrazole (40 mg, 0.16 mmol), K.sub.2CO.sub.3 (30 mg, 0.22 mmol),
XPhos (10 mg, 0.022 mmol) and Pd.sub.2(dba).sub.3 (5.0 mg, 0.0054
mmol). The mixture was sparged with Argon for 10 min, sealed, and
stirred overnight at 90.degree. C. After cooling to room
temperature, the reaction mixture was diluted with water and
extracted with EtOAc. The combined organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The residue was purified by silica chromatography (using 30-50%
EtOAc in Hexanes as the eluent) to afford the title compound (0.032
g, 56% yield). MS (apci) m/z=525.3 (M+H).
Example 618
##STR00828##
[1337]
6-(3-cyclopropyl-1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyr-
idin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1338] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(3-cyclopropyl-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
ridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate (Example 617; 32
mg, 0.061 mmol) in DCM (4 mL) was treated with TFA (2 mL, 0.40
mmol) and stirred for 30 min at room temperature. The reaction
mixture was concentrated in vacuo. The residue was dissolved in 20%
iPrOH in DCM and extracted with 10% NaHCO.sub.3. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo to afford the title compound in
sufficient purity (0.024 g, 92% yield). MS (apci) m/z=425.2
(M+H).
Example 619
##STR00829##
[1339]
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(3-cyclopropyl-1-methy-
l-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1340] A room temperature solution of
6-(3-cyclopropyl-1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 618; 12 mg,
0.028 mmol) in DMF (2 mL) was treated sequentially with benzyl
bromide (10.7 .mu.L, 0.0905 mmol) and TEA (19.7 .mu.L, 0.141 mmol).
The reaction mixture was stirred overnight at room temperature,
then diluted with EtOAc and washed with water. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica
chromatography (20% Hexanes in EtOAc as the gradient eluent) to
cleanly afford the title compound (10 mg, 69% yield). MS (apci)
m/z=515.2 (M+H).
Example 620
##STR00830##
[1341]
6-(3-cyclopropyl-1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridin-2-ylmet-
hyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1342] A room temperature solution of
6-(3-cyclopropyl-1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-
-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (12 mg, 0.028 mmol) in
DMF (2 mL) was treated successively with picolinaldehyde (11 mg,
0.099 mmol) and acetic acid (17 mg, 0.28 mmol). The resulting
reaction mixture was stirred overnight at room temperature. The
reaction mixture was diluted with EtOAc and washed with water. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by reverse phase HPLC (5-95% water/ACN with 0.1% TFA
as the gradient eluent) to afford the title compound (10 mg, 69%
yield). MS (apci) m/z=516.3 (M+H).
Example 621
##STR00831##
[1343] tert-butyl
4-(5-(3-cyano-6-(3-methylisoxazol-5-yl)pyrazolo[1,5-a]pyridin-4-yl)pyridi-
n-2-yl)piperazine-1-carboxylate
[1344] A mixture of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 150 mg,
0.271 mmol),
3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoxazole
(85.1 mg, 0.407 mmol), Pd(PPh.sub.3).sub.4 (31.4 mg, 0.0271 mmol)
and 2 M Na.sub.2CO.sub.3 (679 .mu.L, 1.36 mmol) in dioxane (20 mL)
was sparged with N.sub.2(g), then sealed, and stirred 4 h at
100.degree. C. The reaction mixture was cooled to room temperature,
diluted with water (10 mL) and extracted with EtOAc. The combined
organic extracts were filtered through PS paper, concentrated in
vacuo, and purified by silica chromatography (0-100% EtOAc/hexanes
as the eluent) to afford the title compound (124 mg, 94% yield). MS
(apci) m/z=486.2 (M+H).
[1345] The compound in Table DDD was prepared according to the
method described for the synthesis of Example 621, replacing
3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoxazole
with the appropriate boronic ester.
TABLE-US-00061 TABLE DDD MS (apci) Ex # Structure Chemical Name m/z
622 ##STR00832## tert-butyl 4-(5-(3-cyano-6-
(3-methyl-1H-pyrazol-5- yl)pyrazolo[1,5-a]pyridin- 4-yl)pyridin-2-
yl)piperazine-1- carboxylate 485.2 (M + H)
Example 623
##STR00833##
[1346] tert-butyl
4-(5-(3-cyano-6-(1,5-dimethyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridin-4-yl-
)pyridin-2-yl)piperazine-1-carboxylate
[1347] A mixture of tert-butyl
4-(5-(3-cyano-6-(3-methyl-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridine-2-yl)piperazine-1-carboxylate (200 mg, 0.413 mmol),
CH.sub.3I (38.6 .mu.L, 0.619 mmol) and Cs.sub.2CO.sub.3 (538 mg,
1.65 mmol) in DMF (2 mL) was stirred overnight at room temperature.
The reaction was diluted with water (20 mL), and the resulting
precipitate was vacuum filtered. The solids were washed with water
and hexanes and then air-dried to cleanly afford the title compound
(182 mg, 88% yield). MS (apci) m/z=499.2 (M+H).
Example 624
##STR00834##
[1348]
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile dihydrochloride
[1349] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-4-yl)pyridin-
-2-yl)piperazine-1-carboxylate (120 mg, 0.247 mmol) in DCM (2 mL)
was treated with 5 M HCl in iPrOH (49.4 .mu.L, 0.247 mmol). The
reaction was stirred for 72 h at room temperature and then
filtered. The solid was washed with Et.sub.2O and air-dried to
afford the title compound (50 mg, 53% yield). MS (apci) m/z=386.1
(M+H).
[1350] The compounds in Table EEE were prepared using a method
similar to that used for Example 624, replacing tert-butyl
4-(5-(3-cyano-6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-4-yl)pyridin-
e-2-yl)piperazine-1-carboxylate with the appropriate Boc-protected
piperazine compound. Reactions were followed by LCMS, and reaction
times were adjusted as necessary.
TABLE-US-00062 TABLE EEE MS (apci) Ex # Structure Chemical Name m/z
625* ##STR00835## 6-(3-methylisoxazol-5-yl)- 4-(6-(piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile
hydrochloride 386.1 (M + H) 626 ##STR00836##
6-(3-methyl-1H-pyrazol-5- yl)-4-(6-(piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile dihydrochloride 385.2 (M
+ H) 627 ##STR00837## 6-(1,5-dimethyl-1H- pyrazol-3-yl)-4-(6-
(piperazin-1-yl)pyridin-3- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile dihydrochloride 399.1 (M + H) *The starting
material, tert-butyl
4-(5-(3-cyano-6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridin-4-yl)pyridin--
2-yl)piperazine-1-carboxylate, was prepared according to example
621.
Example 628
##STR00838##
[1351]
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-6-(2-methyloxazol-5-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile
[1352] A room temperature solution of
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]-
pyridine-3-carbonitrile dihydrochloride (Example 624; 12 mg, 0.0262
mmol) in DMF (0.2 mL) was treated with TEA (10.9 .mu.L, 0.0785
mmol) and (bromomethyl)benzene (4.04 .mu.L, 0.0340 mmol). The
resulting mixture was stirred for 1 h at room temperature and then
directly purified by C18 reverse phase chromatography (0-60%
ACN/water as the gradient eluent) to afford the title compound (6.8
mg, 55% yield). MS (apci) m/z=476.2 (M+H).
Example 629
##STR00839##
[1353]
4-(6-(4-benzylpiperazin-1-yl)pyridine-3-yl)-6-(3-methylisoxazol-5-y-
l)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1354] The title compound was prepared (3.3 mg, 32% yield)
according to the method described for the synthesis of Example 628,
replacing
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile dihydrochloride with
6-(3-methylisoxazol-5-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[1,5-
-a]pyridine-3-carbonitrile dihydrochloride (Example 625). Following
C18 reverse phase chromatography (0-60% ACN/water as the gradient
eluent) the title compound was isolated cleanly (3.3 mg, 32%
yield). MS (apci) m/z=476.2 (M+H).
Example 630
##STR00840##
[1355]
4-(6-(4-(2-isopropoxyethyl)piperazin-1-yl)pyridin-3-yl)-6-(3-methyl-
-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1356] A room temperature solution of
6-(3-methyl-1H-pyrazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (Example 626; 10 mg, 0.026 mmol) in
DMF (0.2 mL) was treated with TEA (18 .mu.L, 0.13 mmol) and
2-(2-bromoethoxy)propane (8.7 mg, 0.052 mmol). The reaction mixture
was stirred overnight at room temperature, then for 4 h at
60.degree. C. After cooling to room temperature, the reaction
mixture was purified directly by C18 reverse phase chromatography
(0-60% ACN/water as the gradient eluent) to afford the title
compound (3.4 mg, 28% yield). MS (apci) m/z=471.2 (M+H).
Example 631
##STR00841##
[1357]
4-(6-(4-(2-isopropoxyethyl)piperazin-1-yl)pyridin-3-yl)-6-(3-methyl-
isoxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1358] A room temperature solution of
6-(3-methylisoxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5--
a]pyridine-3-carbonitrile hydrochloride (Example 625; 5 mg, 0.012
mmol) in dry DMA (0.2 mL) was treated with TEA (16.5 .mu.L, 0.12
mmol) and 2-(2-bromoethoxy)propane (6 mg, 0.036 mmol). The reaction
mixture was stirred overnight at 75.degree. C., and then additional
TEA (7.2 .mu.L, 0.052 mmol) and 2-(2-bromoethoxy)propane (6 mg,
0.036 mmol) were added. The resulting mixture was stirred at
75.degree. C. for 36 hr until the reaction was complete by LCMS.
After cooling to room temperature, the reaction mixture was
purified directly by C18 reverse phase chromatography (20-80%
ACN/water as the gradient eluent) to afford the title compound (2
mg, 36% yield). MS (apci) m/z=472.2 (M+H).
Example 632
##STR00842##
[1359]
4-(6-(4-ethylpiperazin-1-yl)pyridine-3-yl)-6-(2-methyloxazol-5-yl)p-
yrazolo[1,5-a]pyridin-3-carbonitrile
[1360] A room temperature solution of
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]-
pyridine-3-carbonitrile dihydrochloride (Example 624; 8 mg, 0.02
mmol) in DMF (0.2 mL) was treated with DIEA (12.2 .mu.L, 0.0698
mmol) and bromoethane (5 .mu.L, 0.067 mmol). The reaction mixture
was stirred for 15 h at 50.degree. C., and then additional DIEA (20
.mu.L, 0.114 mmol) and bromoethane (5 .mu.L, 0.067 mmol) were
added. The resulting mixture was stirred for 4 d at 75.degree. C.
After cooling to room temperature, the reaction mixture was
purified directly by C18 reverse phase chromatography (5-70%
ACN/water as the gradient eluent) to afford the title compound (3.2
mg, 44% yield). MS (apci) m/z=414.1 (M+H).
[1361] The compounds in Table FFF were prepared according to the
method described for the synthesis of Example 632, replacing
bromoethane with the appropriate alkyl halide. Reactions were
followed by LCMS, and reaction times, as well as additions of
supplemental DIEA and alkyl halide were adjusted as necessary.
Purifications were accomplished by C18 reverse phase chromatography
using an appropriate gradient eluent allowing the clean isolation
of the title compounds.
TABLE-US-00063 TABLE FFF MS (apci) Ex # Structure Chemical Name m/z
633 ##STR00843## 4-(6-(4-(2- ethoxyethyl)piperazin-1-
yl)pyridin-3-yl)-6-(2- methyloxazol-5- yl)pyrazolo[1,5-a]pyridine-
3-carbonitrile 458.2 (M + H) 634 ##STR00844## 4-(6-(4-(2-
isopropoxyethyl)piperazin- 1-yl)pyridin-3-yl)-6-(2- methyloxazol-5-
yl)pyrazolo[1,5-a]pyridine- 3-carbonitrile MS (apci) m/z = 472.2 (M
+ H)
Example 635
##STR00845##
[1362]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(3-methylisoxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1363] A room temperature solution of
6-(3-methylisoxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5--
a]pyridine-3-carbonitrile hydrochloride (Example 625; 6 mg, 0.014
mmol) in dry DMA (0.4 mL) was treated with TEA (6 .mu.L, 0.043
mmol), Me.sub.4N(AcO).sub.3BH (7.5 mg, 0.028 mmol) and
6-methoxynicotinaldehyde (4 mg, 0.0284 mmol). The resulting mixture
was stirred overnight at room temperature, and then additional TEA
(4 .mu.L, 0.22 mmol), Me.sub.4N(AcO).sub.3BH (7.5 mg, 0.028 mmol)
and 6-methoxynicotinaldehyde (4 mg, 0.0284 mmol) were added. The
reaction was stirred at room temperature for 84 hr, then quenched
with water and CHCl.sub.3, and allowed to stir for 30 min at room
temperature. The resulting mixture was filtered through a PS frit,
and the organics were extracted with EtOAc. The combined organic
extracts were purified directly by C18 reverse phase chromatography
(20-80% ACN/water as the gradient eluent) to afford the title
compound (1.3 mg, 18% yield). MS (apci) m/z=507.1 (M+H).
Example 636
##STR00846##
[1364]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(3-methyl-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1365] A room temperature solution of
6-(3-methyl-1H-pyrazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 626; 40 mg,
0.087 mmol) in DMF (0.4 mL) was treated with TEA (61 .mu.L, 0.44
mmol), 6-methoxynicotinaldehyde (36 mg, 0.26 mmol) and
Me.sub.4N(AcO).sub.3BH (23 mg, 0.087 mmol). The resulting mixture
was stirred for 48 h at room temperature and then directly purified
by C18 reverse phase chromatography (0-60% ACN/water as the
gradient eluent) to afford the title compound (30 mg, 68% yield).
MS (apci) m/z=506.2 (M+H).
[1366] The compounds in Table GGG were prepared according to the
method described for the synthesis of Example 636, replacing
6-(3-methyl-1H-pyrazol-5-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile dihydrochloride and
6-methoxynicotinaldehyde with the appropriate piperazine from Table
DDD, and the appropriate commercial aldehyde. Reactions were
followed by LCMS, and reaction times were adjusted as necessary. In
each example, title compounds were isolated cleanly following C18
reverse phase chromatography utilizing an appropriate gradient
eluent.
TABLE-US-00064 TABLE GGG MS (apci) Ex # Structure Chemical Name m/z
637 ##STR00847## 6-(1,5-dimethyl-1H-pyrazol- 3-yl)-4-(6-(4-((6-
methoxypyridin-3- yl)methyl)piperazin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 520.2 (M +
H) 638 ##STR00848## 6-(1,5-dimethyl-1H-pyrazol-
3-yl)-4-(6-(4-(pyrimidin-2- ylmethyl)piperazin-1-
yl)pyridin-3-yl)pyrazolo[1,5- a]pyridine-3-carbonitrile 491.2 (M +
H)
Example 639
##STR00849##
[1367]
4-(2-(4-benzylpiperazin-1-yl)pyrimidin-5-yl)-6-(1-methyl-1H-pyrazol-
-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1368] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 281; 15 mg,
0.033 mmol) in DMF (0.2 mL) was treated with (bromomethyl)benzene
(8.4 mg, 0.049 mmol) and TEA (14 .mu.L, 0.098 mmol). The resulting
mixture was stirred for 1 h at room temperature, then directly
purified by C18 reverse phase chromatography (using 0-60% ACN/water
as the gradient eluent) to afford the title compound (9.5 mg, 61%
yield). MS (apci) m/z=476.2 (M+H).
Example 640
##STR00850##
[1369] tert-butyl
4-(6-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridin-3-yl)piperazine-1-carboxylate
[1370] A mixture of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 100 mg, 0.269 mmol),
tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-yl)piperazin-
e-1-carboxylate (131 mg, 0.269 mmol), Na.sub.2CO.sub.3 (143 mg,
1.35 mmol), and Pd(PPh.sub.3).sub.4 (15.6 mg, 0.0135 mmol) in 4:1
dioxane/water (4 mL) was sparged with Argon and then stirred
overnight at 90.degree. C. After cooling to room temperature, the
reaction mixture was concentrated in vacuo, and the residue was
partitioned between EtOAc and water. The aqueous extracts were
washed with EtOAc, and the combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The residue was purified by silica chromatography (eluted
with a stepped gradient of 50-50% Hexanes/EtOAc followed by 25-75%
Hexanes/EtOAc) to cleanly afford the title compound (13 mg, 10%
yield). MS (apci) m/z=485.1 (M+H).
Example 641
##STR00851##
[1371]
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-(piperazin-1-yl)pyridin-2-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile
[1372] A room temperature solution of tert-butyl
4-(6-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)py-
ridin-3-yl)piperazine-1-carboxylate (Example 640; 13 mg, 0.027
mmol) in DCM (4 mL) was treated with TFA (2 mL, 0.4 mmol), and
stirred for 4 h at room temperature. The reaction mixture was
purified directly by reverse phase HPLC (5-95% water/ACN with 0.1%
TFA as the gradient eluent) to afford the title compound as the TFA
salt. The TFA salt was suspended in 4:1 DCM/iPrOH and washed with
saturated NaHCO.sub.3. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo to cleanly afford the title compound (9 mg, 87% yield). MS
(apci) m/z=385.1 (M+H).
Example 642
##STR00852##
[1373]
(R)-4-(5-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-2-yl)--
6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1374] A room temperature solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(5-(piperazin-1-yl)pyridine-2-yl)pyrazolo[-
1,5-a]pyridine-3-carbonitrile (Example 641; 9 mg, 0.023 mmol) in
DMF (4 mL) was treated with D-(-)-mandelic acid (5.34 mg, 0.351
mmol), HATU (8.90 mg, 0.023 mmol) and DIEA (40.8 .mu.L, 0.234
mmol). The reaction was stirred for 16 h at room temperature and
then directly purified by silica chromatography (using a stepped
gradient eluent of 100% EtOAc followed by 5% MeOH in EtOAc) to
provide the title compound (3.2 mg, 26% yield). MS (apci) m/z=519.2
(M+H).
Example 643
##STR00853##
[1375]
(S)-(3-methoxypyrrolidin-1-yl)(4-(5-(6-(1-methyl-1H-pyrazol-4-yl)py-
razolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-1-yl)methanone
[1376] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine dihydrochloride (Example 312; 28.4 mg, 0.0657 mmol)
and DIEA (114 .mu.L, 0.657) mmol) in DCM (500 .mu.L) was added
dropwise to a 0 OC solution of triphosgene (7.80 mg, 0.0263 mmol)
in DCM (273 .mu.L). After stirring for 1 h at 0.degree. C., the
reaction mixture was treated with (S)-3-methoxypyrrolidine
hydrochloride (9.94 mg, 0.0723 mmol) and then stirred for 16 h at
room temperature. The resulting mixture was purified directly by
silica chromatography (40-100% DCM/acetone as the gradient eluent)
to provide the title compound (13.5 mg, 42% yield). MS (apci)
m/z=487.1 (M+H).
Example 644
##STR00854##
[1377]
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin--
3-yl)pyrazolo[1,5-a]pyridine
[1378] A room temperature solution of tert-butyl
4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperazine-1-carboxylate (Example 325; 1.55 g, 3.13
mmol) in 1:1 DCM/TFA (15.0 mL) was stirred for 30 min at room
temperature, then concentrated in vacuo to afford the title
compound as the TFA salt. The TFA salt was suspended in 4:1
DCM/iPrOH and extracted with saturated NaHCO.sub.3. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The residue was purified by
silica chromatography (1-30% DCM/MeOH with 2% NH.sub.4OH as the
gradient eluent) to afford the title compound (716 mg, 58% yield).
MS (apci) m/z=494.2 (M+H), 495.2 (M+2), with C1 pattern.
Example 645
##STR00855##
[1379]
(S)-(4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
din-4-yl)pyridin-2-yl)piperazin-1-yl)(3-methoxypyrrolidin-1-yl)methanone
[1380] A suspension of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)-
pyrazolo[1,5-a]pyridine dihydrochloride (Example 326; 14.1 mg,
0.0302 mmol) and DIEA (52.6 .mu.L, 0.302) mmol) in DCM (500 .mu.L)
was added dropwise to a 0 OC solution of triphosgene (3.59 mg,
0.0121 mmol) in DCM (500 .mu.L). After stirring for 1 h at
0.degree. C., the reaction mixture was treated with
(S)-3-methoxypyrrolidine hydrochloride (4.57 mg, 0.0332 mmol) and
then stirred for 16 h at room temperature. The resulting mixture
was diluted with DCM and washed with saturated NaHCO.sub.3. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (40-100% DCM/acetone as the
gradient eluent) to provide the title compound (7.2 mg, 46% yield).
MS (apci) m/z=521.1 (M+H), 522.1 (M+2H).
Example 646
##STR00856##
[1381]
1-(4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)piperazin-1-yl)-3-methylbutan-1-one
[1382] A room temperature solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine (Example 644; 51.7 mg, 0.131 mmol) in DCM
(1.3 mL) was treated sequentially with DIEA (45.7 .mu.L, 0.263
mmol) and isovaleryl chloride (19.2 .mu.L, 0.158 mmol). The
reaction mixture was stirred for 16 h at room temperature and then
directly purified by C18 reverse phase chromatography (5-95%
water/ACN with 0.1% TFA as the gradient eluent) to afford the title
compound as the TFA salt. The TFA salt was suspended in 4:1
DCM/iPrOH and extracted with saturated NaHCO.sub.3. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo to cleanly afford the title
compound (48.9 mg, 78% yield). MS (apci) m/z=478.1 (M+H), 479.1
(M+2H).
Example 647
##STR00857##
[1383]
4-(6-(4-benzylpiperazin-1-yl)pyridine-3-yl)-3-chloro-6-(1-methyl-1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[1384] A room temperature solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridine-3-yl)-
pyrazolo[1,5-a]pyridine (Example 644; 52.3 mg, 0.133 mmol) in DCM
(1.3 mL) was treated sequentially with TEA (90.1 .mu.L, 0.664 mmol)
and benzyl bromide (47.3 .mu.L, 0.398 mmol). The resulting mixture
was stirred for 16 h at room temperature and then directly purified
by silica chromatography (1-25% DCM/MeOH with 2% NH.sub.4OH as the
gradient eluent) to afford the title compound (43.5 mg, 68% yield).
MS (apci) m/z=484.1 (M+H), 485.1 (M+2H).
Example 648
##STR00858##
[1385]
1-(4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridine-2-yl)piperazin-1-yl)-3-methylbutan-2-ol
[1386] A room temperature solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine (Example 644; 52.6 mg, 0.134 mmol) in MeOH
(1.3 mL) was treated with 1,2-epoxy-3-methylbutane (13.8 mg, 0.160
mmol). The resulting mixture was sealed and stirred for 16 h at
80.degree. C. After cooling to room temperature, the reaction
mixture was concentrated in vacuo, and the residue was purified by
silica chromatography (1-25% DCM/MeOH with 2% NH.sub.4OH as the
gradient eluent) to afford the title compound (46.2 mg, 72% yield).
MS (apci) m/z=480.2 (M+H), 481.2 (M+2), with C1 pattern.
Example 649
##STR00859##
[1387] tert-butyl
4-(5-(3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1388] A cold (0.degree. C.) solution of tert-butyl
4-(5-(6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl)pyridine-2-
-yl)piperazine-1-carboxylate (Example 311; 0.203 g, 0.442 mmol) in
DMF (4 mL) was treated with NBS (0.0865 g, 0.486 mmol). After
stirring for 1 h at room temperature, the reaction mixture was
diluted with EtOAc and washed with brine. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by silica
chromatography (0-50% EtOAc in Hexanes as the gradient eluent) to
afford the title compound (0.157 g, 66% yield). MS (apci) m/z=538.0
(M+H).
Example 650
##STR00860##
[1389] tert-butyl
4-(5-(3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperazine-1-carboxylate
[1390] A mixture of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-4-yl
trifluoromethanesulfonate (Intermediate 27; 250 mg, 0.694 mmol),
tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazin-2-yl)piperazine-
-1-carboxylate (297 mg, 0.763 mmol), Na.sub.2CO.sub.3 (368 mg, 3.47
mmol), and Pd(PPh.sub.3).sub.4 (40.1 mg, 0.0347 mmol) in 4:1
dioxane/water (4 mL) was sparged with Argon for 10 min, then
stirred overnight at 90.degree. C. under an Argon atmosphere. After
cooling to room temperature, the reaction mixture was concentrated
in vacuo, and the residue was partitioned between EtOAc and water.
The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by silica chromatography (using 50-100% EtOAc in
Hexanes as the gradient eluent) to cleanly afford the title
compound (225 mg, 69% yield). MS (apci) m/z=485.1 (M+H). MS (apci)
m/z=474.2 (M+H).
Example 651
##STR00861##
[1391]
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin--
3-yl)pyrazolo[1,5-a]pyridine
[1392] A room temperature solution of tert-butyl
4-(5-(3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)py-
ridin-2-yl)piperazine-1-carboxylate (Example 650; 1.55 g, 3.13
mmol) in DCM (4.0 mL) was treated with TFA, then stirred overnight
at room temperature. The reaction mixture was concentrated in vacuo
and the residue was purified by reverse phase HPLC (5-95% water/ACN
with 0.1% TFA as the gradient eluent) to afford the title compound
as the TFA salt. The TFA salt was suspended in 4:1 DCM/iPrOH and
washed with saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to afford the title compound (151 mg, 79%
yield). MS (apci) m/z=374.2 (M+H).
Example 652
##STR00862##
[1393]
(R)-2-hydroxy-1-(4-(5-(3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazol-
o[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-1-yl)-2-phenylethan-1-one
[1394] A room temperature solution of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine (Example 651; 20 mg, 0.054 mmol) in DMF (4
mL) was treated with D-(-)-mandelic acid (12 mg, 0.080 mmol), HATU
(20 mg, 0.054 mmol) and DIEA (93 .mu.L, 0.54 mmol). The reaction
was stirred for 16 h at room temperature, and then diluted with
EtOAc and washed with water. The combined organic extracts were
dried over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated
in vacuo. The residue was purified by silica chromatography (using
a stepped gradient of 25% Hexanes in EtOAc followed by 100% EtOAc)
to provide the title compound (20 mg, 74% yield). MS (apci)
m/z=508.2 (M+H).
Example 653
##STR00863##
[1395]
4-(6-(4-benzylpiperazin-1-yl)pyridin-3-yl)-3-methyl-6-(1-methyl-1H--
pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[1396] A room temperature solution of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine (Example 651; 17 mg, 0.0455 mmol) in DMF (2
mL) was treated sequentially with benzyl bromide (17.3 .mu.L,
0.0905 mmol) and TEA (31.7 .mu.L, 0.146 mmol). The reaction mixture
was stirred overnight at room temperature, then diluted with EtOAc
and washed with water. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The residue was purified by silica chromatography (using a
stepped gradient eluent of 25% Hexanes in EtOAc followed by 100%
EtOAc) to cleanly afford the title compound (16 mg, 76% yield). MS
(apci) m/z=464.2 (M+H).
Example 654
##STR00864##
[1397]
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyridine-2-ylmethyl)-
piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine
[1398] A room temperature solution of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine (Example 651; 21 mg, 0.56 mmol) in DMF (2
mL) was treated sequentially with picolinaldehyde (0.021 g, 0.20
mmol), TEA (39 .mu.L, 0.28 mmol) and NaBH(AcO).sub.3 (28.4 mg,
0.134 mmol). The resulting reaction mixture was allowed to stir for
1 h at room temperature and then acetic acid (10 eq) was added. The
reaction mixture was stirred overnight at room temperature. The
reaction mixture was diluted with EtOAc and washed with water. The
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The residue
was purified by reverse phase HPLC (5-95% water/ACN with 0.1% TFA
as the gradient eluent) to afford the title compound as the TFA
salt. The TFA salt was suspended in 4:1 DCM/iPrOH and washed with
saturated NaHCO.sub.3. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo to afford the title compound (20 mg, 77% yield) MS (apci)
m/z=465.2 (M+H).
Example 655
##STR00865##
[1399] tert-butyl
4-(5-(6-(1-methyl-1H-pyrazol-4-yl)-3-vinylpyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1400] A room temperature suspension of tert-butyl
4-(5-(3-bromo-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (Example 649; 0.220 g, 0.409
mmol), potassium vinyltrifluoroborate (350 mg, 1.23 mmol),
Pd.sub.2(dba).sub.3 (59.9 mg, 0.0654 mmol), XPhos (62.3 mg, 0.131
mmol) and K.sub.2CO.sub.3 (169 mg, 1.23 mmol) in 4:1 dioxane/water
(8 mL) was sparged with Argon and then stirred for 4 h at
90.degree. C. under an atmosphere of Argon. After cooling to room
temperature, the reaction mixture was concentrated in vacuo, then
diluted with EtOAc and extracted with water. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered and
concentrated in vacuo. The residue was purified by silica
chromatography (30-75% EtOAc in Hexanes as the gradient eluent) to
afford the title compound (120 mg, 61% yield). MS (apci) m/z=486.1
(M+H).
Example 656
##STR00866##
[1401] tert-butyl
4-(5-(3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1402] A room temperature solution of tert-butyl
4-(5-(6-(1-methyl-1H-pyrazol-4-yl)-3-vinylpyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (Example 655; 0.120 g, 0.247
mmol) in EtOAc (6 mL) was treated with 10% Pd/C (0.0263 g, 0.0247
mmol), then sparged with H.sub.2 for 10 min and stirred under an
atmosphere of H.sub.2 overnight at room temperature. The reaction
mixture was filtered through GF/F paper and the filtrate was
concentrated in vacuo to afford the title compound (120 mg,
quantitative yield) in sufficient purity. MS (apci) m/z=488.1
(M+H).
Example 657
##STR00867##
[1403]
3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-
-yl)pyrazolo[1,5-a]pyridine
[1404] A room temperature solution of tert-butyl
4-(5-(3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (Example 656; 0.120 g, 0.246
mmol) in DCM (4.0 mL) was treated with TFA (2 mL), then stirred for
4 h at room temperature. The reaction mixture was concentrated in
vacuo, and the residue was purified by reverse phase HPLC (5-95%
water/ACN with 0.1% TFA as the gradient eluent) to afford the title
compound as the TFA salt. The TFA salt was suspended in 4:1
DCM/iPrOH and washed with saturated NaHCO.sub.3. The combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo to afford the title compound
(70 mg, 73% yield). MS (apci) m/z=388.2 (M+H).
Example 658
##STR00868##
[1405]
(R)-1-(4-(5-(3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyr-
idin-4-yl)pyridin-2-yl)piperazin-1-yl)-2-hydroxy-2-phenylethanone
[1406] A room temperature solution of
3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)py-
razolo[1,5-a]pyridine (Example 657; 27 mg, 0.070 mmol) in DMF (4
mL) was treated with D-(-)-mandelic acid (16 mg, 0.10 mmol), HATU
(26 mg, 0.070 mmol) and DIEA (121 .mu.L, 0.70 mmol). The reaction
was stirred 16 h at room temperature, and then diluted with EtOAc
and washed with water. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The residue was purified by silica chromatography (using a
stepped gradient of 1:2 Hexanes in EtOAc followed by 1:4 Hexanes in
EtOAc) to provide the title compound (20 mg, 55% yield). MS (apci)
m/z=522.2 (M+H).
Example 659
##STR00869##
[1407]
(S)-(4-(5-(3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
in-4-yl)pyridin-2-yl)piperazin-1-yl)(3-methoxypyrrolidin-1-yl)methanone
[1408] A suspension of
3-ethyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)py-
razolo[1,5-a]pyridine (Example 657; 38 mg, 0.098 mmol) and DIEA
(102 .mu.L, 0.59) mmol) in DriSolv.RTM. DCM (490 .mu.L) was added
dropwise to a 0 OC solution of triphosgene (13 mg, 0.044 mmol) in
DriSolv.RTM. DCM (490 .mu.L). After stirring for 30 min at
0.degree. C., the reaction mixture was treated with
(S)-3-methoxypyrrolidine hydrochloride (13 mg, 0.098 mmol), then
stirred for 48 h at room temperature. The resulting mixture was
diluted with EtOAc and washed with water. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by reverse-phase
HPLC (5-95% water/ACN with 0.1% TFA as the gradient eluent) to
afford the title compound as the TFA salt. The TFA salt was
suspended in 4:1 DCM/iPrOH and washed with saturated NaHCO.sub.3.
The combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to provide
the title compound (30 mg, 59% yield). MS (apci) m/z=515.2
(M+H).
Example 660
##STR00870##
[1409]
3-cyclopropyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyr-
idin-3-yl)pyrazolo[1,5-a]pyridine
[1410] In a sealed vessel, a -35.degree. C. solution of tert-butyl
4-(5-(6-(1-methyl-1H-pyrazol-4-yl)-3-vinylpyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (Example 655; 0.100 g, 0.206
mmol) in DCE (2 mL) was treated sequentially with 1.0 M diethylzinc
in Hexanes (4.12 mL, 4.12 mmol) and diiodomethane (0.332 mL, 4.12
mmol). The resulting mixture was brought to room temperature, and
then stirred overnight at 75.degree. C. The reaction mixture was
diluted with DCM and washed with water. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to afford tert-butyl
4-(5-(3-cyclopropyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate. The crude material was
immediately suspended in 1:2 TFA/DCM (3 mL), and stirred for 30 min
at room temperature. The reaction mixture was concentrated in vacuo
and the residue was purified by reverse phase HPLC (5-95% water/ACN
with 0.1% TFA as the gradient eluent) to afford the title compound
as the TFA salt. The TFA salt was suspended in 4:1 DCM/iPrOH and
extracted with saturated NaHCO.sub.3. The combined organic extracts
were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to afford the title compound (1.1 mg, 1.3%
yield). MS (apci) m/z=400.2 (M+H).
Example 661
##STR00871##
[1411]
(S)-4-(6-(4-(2-(dimethylamino)-2-phenylacetyl)piperazin-1-yl)pyridi-
n-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1412] A suspension of
(S)-4-(6-(4-(2-amino-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)-6-(1-met-
hyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate) (Example 50; 7 mg, 0.014 mmol) in
anhydrous MeOH (0.4 mL) was treated sequentially with formaldehyde
(20.3 .quadrature.L, 0.27 mmol) and Me.sub.4N(AcO).sub.3BH (21.3
mg, 0.0811 mmol). The reaction mixture was allowed to stir
overnight at ambient temperature, before introducing additional
formaldehyde (5 .quadrature.L, 0.066 mmol), and
Me.sub.4N(AcO).sub.3BH (5 mg, 0.019 mmol). After stirring an
additional period of 3 d at ambient temperature, the mixture was
quenched with water and CHCl.sub.3, and then extracted with
CHCl.sub.3 in a PS frit. The combined organic extracts were
concentrated in vacuo, and the resulting residue was purified by
C18 reverse-phase chromatography (25-80% ACN in water as the
gradient eluent) to afford the title compound (3 mg, 41% yield). MS
(apci) m/z=546.3 (M+H).
Example 662
##STR00872##
[1413] Isobutyl
4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1414] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 50 mg,
0.11 mmol), isobutyl carbonochloridate (28 .mu.L, 0.22 mmol), DMAP
(1.3 mg, 0.011 mmol) and DIEA (98 .quadrature.L, 0.55 mmol) in DCM
(1.0 mL) was stirred overnight at ambient temperature. The reaction
mixture was washed with water, and the organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, concentrated in vacuo.
The resulting residue was purified by silica chromatography (0-20%
acetone in DCM as the gradient eluent) to afford the title compound
(4.2 mg, 8% yield). MS (apci) m/z=484.9 (M+H).
Example 663
##STR00873##
[1415]
(R)-4-(5-(3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl)pyridin-2-yl)-N-(1-(4-fluorophenyl)ethyl)piperazine-1-carboxamide
[1416] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 34 mg
0.074 mmol) in anhydrous DMA (0.9 mL) was treated with
(R)-1-fluoro-4-(1-isocyanatoethyl)benzene (14.7 mg, 0.089 mmol) and
TEA (52 .quadrature.L, 0.37 mmol). While monitoring by LCMS, the
resulting reaction mixture was stirred at ambient temperature until
complete. The mixture was directly purified by C18 reverse-phase
chromatography (20-80% ACN/water with 0.1% formic acid) to afford
the title compound (29.2 mg, 72% yield). MS (apci) m/z=550.3
(M+H).
Example 664
##STR00874##
[1417]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(2-(phenylsulfonyl)ethyl)piper-
azin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1418] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 19.6 mg,
0.0429 mmol), ((2-chloroethyl)sulfonyl)benzene (26.3 mg, 0.129
mmol) and TEA (59.7 .mu.L, 0.429 mmol) in dry DMA (500 .mu.L) was
stirred overnight at 75.degree. C. The reaction mixture was
purified directly by C18 reverse-phase chromatography (20-80%
ACN/Water as the gradient eluent) to afford the title compound
(10.2 mg, 43% yield). MS (apci) m/z=553.2 (M+H).
Example 665
##STR00875##
[1419]
4-(6-(4-((6-(dimethylamino)pyridin-3-yl)methyl)piperazin-1-yl)pyrid-
in-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitril-
e
[1420] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 0.125 g,
0.273 mmol) in dry DMA (500 .mu.L) was treated sequentially with
TEA (40.7 .mu.L, 0.292 mmol), Me.sub.4N(AcO).sub.3BH (23.0 mg,
0.0876 mmol), 6-(dimethylamino)nicotinaldehyde (13.2 mg, 0.0876
mmol) and 1 drop of glacial acetic acid. After stirring overnight
at ambient temperature, the mixture was quenched with
water/CHCl.sub.3 and extracted with CHCl.sub.3 in a PS frit. The
combined organic extracts were concentrated in vacuo, and the
residue was purified by C18 reverse-phase chromatography (20-80%
ACN in water as the gradient eluent) to afford the title compound
(15 mg, 50% yield). MS (apci) m/z=519.2 (M+H).
Example 666
##STR00876##
[1421]
4-(6-(4-((5-fluoro-6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyri-
din-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1422] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 100 mg,
0.219 mmol) in DCM (3 mL) was treated with DIEA (95.5 .mu.L, 0.547
mmol). After stirring for 5 min at ambient temperature, the mixture
was treated sequentially with 5-fluoro-6-methoxynicotinaldehyde
(37.3 mg, 0.241 mmol) and NaBH(AcO).sub.3 (92.7 mg, 0.437 mmol).
After stirring for 12 h at room temperature, the reaction mixture
was diluted with DCM and washed with 10% Na.sub.2CO.sub.3(aq). The
organic extracts were dried over anhydrous MgSO.sub.4, filtered,
and concentrated in vacuo. The crude residue was purified by silica
chromatography (10% MeOH/DCM with 1% NH.sub.4OH as the eluent) to
afford the title compound (85 mg, 74% yield). MS (apci) m/z=524.2
(M+H).
Example 667
##STR00877##
[1423]
4-(6-(4-((5-chloro-6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyri-
din-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1424] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 30 mg,
0.066 mmol) in DCM (1 mL) was treated with DIEA (29 .mu.L, 0.16
mmol). After stirring for 5 min at ambient temperature, the mixture
was treated sequentially with 3-chloro-5-formyl-2-methoxypyridine
(17 mg, 0.098 mmol) and NaBH(AcO).sub.3 (28 mg, 0.13 mmol). The
resulting mixture was stirred for 12 h at room temperature, and
then concentrated in vacuo. The residue was purified by C18
reverse-phase chromatography (5-95% ACN/water with 0.1% TFA as the
gradient eluent) to afford the title compound as the TFA salt. The
salt was diluted with EtOAc, treated with saturated
NaHCO.sub.3(aq), and stirred for 10 min at ambient temperature. The
organic extracts were separated, dried over anhydrous MgSO.sub.4,
filtered, and concentrated in vacuo to cleanly afford the title
compound (29 mg, 82% yield). MS (apci) m/z=540.2 (M+H).
[1425] The compounds in Table HHH were prepared and purified
according the method described for the synthesis of Example 667,
replacing 3-chloro-5-formyl-2-methoxypyridine with the appropriate
aldehyde starting material.
TABLE-US-00065 TABLE HHH MS Ex apci # Structure Chemical Name (m/z)
668 ##STR00878## 4-(6-(4-((6- ethoxypyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a[pyridine-3- carbonitrile 520.3 (M + H) 669
##STR00879## 4-(6-(4-((6- isopropoxypyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 534.3 (M + H) 670
##STR00880## 4-(6-(4-((5,6- dimethoxypyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 536.2 (M + H) 671
##STR00881## 4-(6-(4-((2,6- dimethoxypyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 536.3 (M + H) 672
##STR00882## 4-(6-(4-((6-methoxy-4- methylpyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 520.2 (M + H) 673
##STR00883## 4-(6-(4-((6-ethoxy-5- fluoropyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 538.3 (M + H) 674
##STR00884## 6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4- ((6-(2,2,2-
trifluoroethoxy)pyridin- 3-yl)methyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 574.2 (M + H) 675
##STR00885## 4-(6-(4-((6- (difluoromethoxy) pyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 542.2 (M + H) 676
##STR00886## 4-(6-(4-((6-methoxy-5- methylpyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 520.2 (M + H) 677
##STR00887## 6-(1-methyl-1H- pyrazol-4-yl)-4-(6-(4- ((6-
(trifluoromethyl)pyridin- 3-yl)methyl)piperazin- 1-yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 544.2 (M + H) 678
##STR00888## 4-(6-(4-((6-methoxy-2- methylpyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 520.3 (M + H) 679
##STR00889## 4-(6-(4-((6-(tert- butyl)pyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 532.3 (M + H) 680
##STR00890## 4-(6-(4-((6-(2- hydroxypropan-2- yl)pyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 534.3 (M + H) 681
##STR00891## 4-(6-(4-((6- cyanopyridin-3- yl)methyl)piperazin-1-
yl)pyridin-3-yl)-6-(1- methyl-1H-pyrazol-4- yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 501.2 (M + H)
Example 682
##STR00892##
[1426]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-((1-methyl-2-oxo-1,2-dihydropy-
ridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-ca-
rbonitrile dihydrochloride
[1427] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 50 mg,
0.109 mmol) in DMF (1093 .mu.L) was treated with
1-methyl-2-oxo-1,2-dihydropyridine-3-carbaldehyde (22.5 mg, 0.164
mmol) and TEA (45.7 .mu.L, 0.328 mmol). The mixture was acidified
to about pH 6 with AcOH, and then stirred for 1 h at ambient
temperature. The reaction mixture was treated with NaBH.sub.3CN
(10.3 mg, 0.164 mmol), and stirred for 2 d at ambient temperature.
The resulting suspension was warmed to dissolve particulates, and
directly purified by C18 reverse-phase chromatography (5-60%
ACN/water as the gradient eluent) to afford the title compound
together with impurities. Additional purification by C18
reverse-phase chromatography (5-45% ACN/water with 0.1%
HCl.sub.(aq) as the gradient eluent) cleanly afforded the title
compound as the dihydrochloride salt (11.2 mg, 19% yield). MS
(apci) m/z=506.2 (M+H).
Example 683
##STR00893##
[1428]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-((1-methyl-2-oxo-1,2-dihydriop-
yridin-4-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-c-
arbonitrile dihydrochloride
[1429] A suspension of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 50 mg,
0.109 mmol) in DMF (1093 .mu.L) was treated with
1-methyl-2-oxo-1,2-dihydropyridine-4-carbaldehyde (22.5 mg, 0.164
mmol) and TEA (45.7 .mu.L, 0.328 mmol). The mixture was acidified
to about pH 6 with AcOH, and then stirred for 2 h at ambient
temperature. The reaction mixture was treated with NaBH.sub.3CN
(10.3 mg, 0.164 mmol), and stirred for 2 d at ambient temperature.
The resulting suspension was warmed to dissolve particulates, and
directly purified by C18 reverse-phase chromatography (5-50%
ACN/water as the gradient eluent) to afford semi pure title
compound. Additional purification, of this semi pure material, by
C18 reverse-phase chromatography (5-50% ACN/water with 0.1%
HCl.sub.(aq) as the gradient eluent) cleanly afforded the title
compound as the dihydrochloride salt (20.2 mg, 32% yield). MS
(apci) m/z=506.2 (M+H).
Example 684
##STR00894##
[1430]
(S)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-((tetrahydro-2H-pyran-2-yl-
)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of (S)-(tetrahydro-2H-pyran-2-yl)methyl
4-methylbenzenesulfonate
[1431] A mixture of (S)-(tetrahydro-2H-pyran-2-yl)methanol (1 g,
8.61 mmol), sulfur (0.276 g, 8.61 mmol), TsCl (1.81 g, 9.47 mmol),
and KOH(s) (0.725 g, 12.9 mmol) in THF (10 mL) was stirred
overnight at ambient temperature. The resulting suspension was
filtered through a glass frit, rinsing with THF. The filtrate was
concentrated in vacuo, and the resulting residue was purified by
silica chromatography (100% DCM as eluent) to afford the title
compound (1.33 g, 57% yield). .sup.1H NMR (CDCl.sub.3) .delta. 7.79
(d, 2H), 7.33 (d, 2H), 3.95 (d, 2H), 3.91-3.96 (m, 1H), 3.50-3.56
(m, 1H), 3.34-3.40 (m, 1H), 2.44 (s, 3H), 1.82-1.86 (m, 1H),
1.41-1.59 (m, 4H), 1.22-1.31 (m, 1H).
Step 2: Preparation of
(S)-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-((tetrahydro-2H-pyran-2-yl)methy-
l)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1432] A mixture of
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride (Example 2; 50 mg,
0.109 mmol), (S)-(tetrahydro-2H-pyran-2-yl)methyl
4-methylbenzenesulfonate (Step 1; 35.5 mg, 0.131 mmol) and TEA
(76.2 .mu.L, 0.547 mmol) was dissolved in 1:1 DCM:DMA (2 mL). After
stirring overnight at 90.degree. C., additional
(S)-(tetrahydro-2H-pyran-2-yl)methyl 4-methylbenzenesulfonate (Step
1; 35.5 mg, 0.131 mmol) and a drop of TEA were added and reaction
was stirred for another day to reach completion. The crude mixture
was directly purified by reverse-phase chromatography (5-50%
ACN/water) to afford the title compound (26.5 mg, 50% yield). MS
(apci) m/z=483.2 (M+H).
Example 685
##STR00895##
[1433]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)-2-oxopiperazin-1-yl)pyridin-
-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
4-(5-bromopyridin-2-yl)-3-oxopiperazine-1-carboxylate
[1434] A mixture of 5-bromo-2-fluoropyridine (0.175 mL, 1.70 mmol),
tert-butyl 3-oxopiperazine-1-carboxylate (0.512 g, 2.56 mmol) and
potassium t-butoxide (0.287 g, 2.56 mmol) in toluene (17.0 mL) was
refluxed overnight. After cooling to ambient temperature, the
mixture was extracted with EtOAc and water. The organic extracts
were washed with brine, then dried over anhydrous Na.sub.2SO.sub.4,
filtered and concentrated in vacuo. The crude residue (607 mg,
quantitative yield) was carried forward without further
purification.
Step 2: Preparation of 1-(5-bromopyridin-2-yl)piperazin-2-one
[1435] A mixture of tert-butyl
4-(5-bromopyridin-2-yl)-3-oxopiperazine-1-carboxylate (607 mg, 1.70
mmol) in TFA (8 mL, 1.70 mmol) and DCM (8.52 mL) was stirred for 30
min at ambient temperature. The reaction mixture was concentrated
in vacuo. The resulting residue was purified by silica
chromatography (5-95% Hexanes:EtOAc as the gradient eluent) to
afford the title compound (208 mg, 48% yield). MS (apci) m/z=258.0
(M+2), with bromine isotopic ratio.
Step 3: Preparation of
1-(5-bromopyridin-2-yl)-4-((6-methoxypyridin-3-yl)methyl)piperazin-2-one
[1436] A mixture of 1-(5-bromopyridin-2-yl)piperazin-2-one (208 mg,
0.812 mmol) and 6-methoxynicotinaldehyde (0.134 g, 0.975 mmol) in
DCE (8.12 mL) was stirred for 10 min at ambient temperature, and
then NaBH(AcO).sub.3 (0.344 g, 1.62 mmol) was added. The resulting
mixture was stirred for an additional 2 h at ambient temperature
before extracting with DCM and water. The aqueous extracts were
back-extracted with additional DCM. The combined DCM extracts were
washed with brine, dried over anhydrous Na.sub.2SO.sub.4, filtered
and concentrated in vacuo. The crude residue was purified by silica
chromatography (5-95% EtOAc:Hexanes as the gradient eluent) to
afford the title compound (274 mg, 89% yield). MS (apci) m/z=377.0
(M+), 379.1 (M+2), with bromine isotopic ratio.
Step 4: Preparation of
4-((6-methoxypyridin-3-yl)methyl)-1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazin-2-one
[1437] A mixture of
1-(5-bromopyridin-2-yl)-4-((6-methoxypyridin-3-yl)methyl)piperazin-2-one
(274 mg, 0.726 mmol),
4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane) (738
mg, 2.91 mmol), KOAc (143 mg, 1.45 mmol) and
PdCl.sub.2(dppf).CH.sub.2Cl.sub.2 (59.3 mg, 0.0726 mmol) in dioxane
(7.26 mL) was stirred overnight at 90.degree. C. After cooling to
ambient temperature, the reaction mixture was filtered through GF/F
paper. The filtrate was concentrated in vacuo, and the resulting
residue was purified by silica chromatography (5-95% Hexanes:EtOAc
as the gradient eluent) to afford the title compound (60 mg, 20%
yield). MS (apci) m/z=425.2 (M+H).
Step 5: Preparation of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)-2-oxopiperazin-1-yl)pyridin-3-yl)-
-6-(1-methyl-H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1438] A mixture of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 45 mg, 0.12 mmol)
4-((6-methoxypyridin-3-yl)methyl)-1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazin-2-one (62 mg, 0.15 mmol),
Pd.sub.2(dba).sub.3 (5.6 mg, 0.0061 mmol), X-Phos (12 mg, 0.024
mmol) and 2 M Na.sub.2CO.sub.3(aq) (0.15 mL, 0.303 mmol) in dioxane
(0.61 mL) was degassed with Ar for 5 min. The mixture was stirred
for 3 h at 90.degree. C. After cooling to ambient temperature, the
reaction mixture was filtered through GF/F paper and then
concentrated in vacuo. The residue was purified by C18
reverse-phase chromatography (5-95% ACN/water containing 0.1% TFA)
to afford the title compound as a TFA salt (27 mg). The TFA salt
was partitioned between DCM and saturated Na.sub.2CO.sub.3(aq). The
organic extracts were washed with brine, dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo to cleanly
afford the title compound (20.4 mg, 32% yield). MS (apci) m/z=520.2
(M+H).
Example 686
##STR00896##
[1439]
4-(6-(2-benzyl-3-oxohexahydroimidazo[1,5-a]pyrazin-7(1H)-yl)pyridin-
-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1440] In a microwave vessel, a room temperature mixture of
4-(6-Fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 30 mg, 0.094 mmol) and
2-benzylhexahydroimidazo[1,5-a]pyrazin-3(2H)-one (44 mg, 0.19 mmol)
in DMSO (471 .mu.L) was subjected to microwave irradiation for 28 h
at 150.degree. C. The reaction mixture was cooled to room
temperature, and then purified directly by C18 reverse-phase
chromatography (5-60% ACN/water as the gradient eluent) to afford
the title compound (8.1 mg, 15% yield). MS (apci) m/z=530.2
(M+H).
Example 687
##STR00897##
[1441]
4-(6-(6-(6-methoxynicotinoyl)-3,6-diazabicyclo[3.1.1]heptan-3-yl)py-
ridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonit-
rile
[1442] At ambient temperature, a mixture of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 486; 21
mg, 0.053 mmol), 2-methoxy-5-pyridinecarboxylic acid (12.2 mg,
0.0795 mmol) and HATU (22.2 mg, 0.0583 mmol) in DCM (530 .mu.L) was
treated with DIEA (46.3 .mu.L, 0.265 mmol). The resulting mixture
was stirred for 1 h at ambient temperature before concentrating in
vacuo. The crude residue was purified by C18 reverse-phase
chromatography (5-95% ACN/water containing 0.1% TFA as the gradient
eluent) to afford the title compound as the TFA salt. The TFA salt
was partitioned between DCM and saturated NaHCO.sub.3(aq). The DCM
extracts were reserved and the aqueous extracts were back-extracted
with DCM. The DCM extracts were combined, washed with brine, dried
over anhydrous Na.sub.2SO.sub.4, filtered and concentrated in vacuo
to cleanly afford the title compound (19.1 mg, 68% yield). MS
(apci) m/z=532.2 (M+H).
[1443] The compounds in the Table III were prepared, purified and
free-based in a similar fashion as described for the synthesis of
Example 687, replacing 2-methoxy-5-pyridinecarboxylic acid with the
appropriate carboxylic acid starting material. Reaction progression
in each example was followed by LCMS, and reaction times were
adjusted as necessary.
TABLE-US-00066 TABLE III MS apci Ex # Structure Chemical Name (m/z)
688 ##STR00898## 4-(6-(6-(5-fluoro-6- methoxynicotinoyl)- 3,6-
diazabicyclo[3.1.1] heptan-3-yl)pyridin-3-yl)-6-
(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5- a]pyridine-3- carbonitrile
550.2 (M + H) 689 ##STR00899## 4-(6-(6-(3-fluoro-4-
methoxybenzoyl)-3,6- diazabicyclo[3.1.1]heptan-
3-yl)pyridin-3-yl)-6- (1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5-
a]pyridine-3- carbonitrile 549.2 (M + H) 690 ##STR00900##
4-(6-(6-(3-chloro-4- methoxybenzoyl)-3,6-
diazabicyclo[3.1.1]heptan- 3-yl)pyridin-3-yl)-6-
(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5- a]pyridine-3- carbonitrile
565.2 (M + H) 691 ##STR00901## 4-(6-(6-(2-(5- fluoropyridin-2-
yl)acetyl)-3,6- diazabicyclo[3.1.1]heptan- 3-yl)pyridin-3-yl)-6-
(1-methyl-1H-pyrazol- 4-yl)pyrazolo[1,5- a]pyridine-3- carbonitrile
534.2 (M + H)
Example 692
##STR00902##
[1444]
4-(6-(6-((6-methoxypyridin-3-yl)methyl)-3,6-diazabicyclo[3.1.1]hept-
an-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine--
3-carbonitrile
Step 1: Preparation of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[1445] A solution of
4-(6-Fluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrid-
ine-3-carbonitrile (Intermediate P6; 0.10 g, 0.31 mmol) in DMSO (5
mL) was treated with tert-butyl
3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (69 mg, 0.35 mmol) and
K.sub.2CO.sub.3 (0.22 g, 1.6 mmol). The resulting mixture was
stirred overnight at 90.degree. C. before introducing additional
tert-butyl 3,6-diazabicyclo[3.1.1]heptane-6-carboxylate (70 mg,
0.36 mmol) and K.sub.2CO.sub.3 (0.1 g, 0.73 mmol). The reaction
mixture was stirred for an additional 24 h at 90.degree. C. After
cooling to ambient temperature, the reaction mixture was diluted
with EtOAc (10 mL), and washed with water. The combined organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, then filtered
and concentrated in vacuo. The isolated solids were dissolved in
DCM (2.5 mL), treated with 5M HCl in iPrOH, (0.3 mL) and stirred
overnight at ambient temperature. Concentration of the reaction
mixture in vacuo afforded the title compound as the dihydrochloride
salt, which was used directly in the next step without further
purification (133.7 mg, 89% yield). MS (apci) m/z=397.2 (M+H).
Step 2: Preparation of
4-(6-(6-((6-methoxypyridin-3-yl)methyl)-3,6-diazabicyclo[3.1.1]heptan-3-y-
l)pyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carb-
onitrile
[1446] A solution of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Step 1; 26 mg, 0.055 mmol) in DMA (1 mL) was treated with TEA
(23.2 .mu.L, 0.166 mmol), NaBH(AcO).sub.3 (17.6 mg, 0.0831 mmol)
and 6-methoxynicotinaldehyde (11.4 mg, 0.0831 mmol). The resulting
mixture was stirred for 2 d at room temperature, before quenching
with water. The mixture was extracted with DCM, and the combined
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo. The crude residue was purified
by C18 reverse-phase chromatography (20-80% ACN/water as the
gradient) to afford the title compound (5.3 mg, 19% yield). MS
(apci) m/z=518.2 (M+H).
Example 693
##STR00903##
[1447]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(6-(pyridin-2-ylmethyl)-3,6-diaza-
bicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1448] Following a similar method to that used in Step 2 for the
preparation and purification of Example 692, replacing
6-methoxynicotinaldehyde with picolinaldehyde, the title compound
was isolated cleanly (7.4 mg, 26% yield). MS (apci) m/z=488.2
(M+H).
Example 694
##STR00904##
[1449]
4-(6-(6-(2-ethoxyethyl)-3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin--
3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1450] A solution of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 692, Step 1; 20 mg, 0.0426 mmol) in DMA (500 .mu.L) was
treated with TEA (59.4 .mu.L, 0.426 mmol), and
1-bromo-2-ethoxyethane (16.1 .mu.L, 0.128 mmol). The resulting
mixture was stirred overnight at 75.degree. C., then cooled to
ambient temperature and directly purified by C18 reverse-phase
chromatography (20-80% ACN/water as the gradient eluent) to afford
the title compound (2 mg, 10% yield). MS (apci) m/z=469.2
(M+H).
Example 695
##STR00905##
[1451]
6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(6-propyl-3,6-diazabicyclo[3.1.1]-
heptan-3-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1452] A solution of
4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(1-methyl-1H-pyr-
azol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 692, Step 1; 20 mg, 0.0426 mmol) in DMA (500 .mu.L) was
treated with TEA (5.94 .mu.L, 0.0426 mmol), and 1-iodopropane (7.24
mg, 0.0426 mmol). The resulting mixture was stirred overnight at
ambient temperature, and then directly purified by C18
reverse-phase chromatography (20-80% ACN/water as the gradient
eluent) to afford the title compound (2 mg, 10% yield). MS (apci)
m/z=439.2 (M+H).
Example 696
##STR00906##
[1453]
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyridin-3-
-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1454] A solution of
6-(1-(difluoromethyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)-
pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example
266; 21 mg, 0.043 mmol) in DMA (0.5 mL) was treated with TEA (17.8
.mu.L, 0.128 mmol), Me.sub.4N(AcO).sub.3BH (16.8 mg, 0.0638 mmol)
and 6-methoxynicotinaldehyde (7 mg, 0.05 mmol). The resulting
mixture was stirred overnight at room temperature before
introducing additional TEA (20 .mu.L, 0.144 mmol),
Me.sub.4N(AcO).sub.3BH (10 mg, 0.038 mmol) and
6-methoxynicotinaldehyde (7.01 mg, 0.0511 mmol). The reaction
mixture was stirred for an additional period of 3 d prior and then
quenched with water/CHCl.sub.3. The quenched mixture was extracted
with CHCl.sub.3 in a PS Frit, and the combined organic extracts
were concentrated in vacuo. The crude residue was purified by C18
reverse-phase chromatography (20-80% ACN/water as the gradient
eluent) to afford the title compound (6.9 mg, 30% yield). MS (apci)
m/z=519.2 (M+H).
Example 697
##STR00907##
[1455]
6-(1-isopropyl-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyridin-3-yl)met-
hyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of 1-amino-3,5-dibromopyridin-1-ium
2,4,6-trimethylbenzenesulfonate
[1456] To a solution of O-(mesitylsulfonyl)hydroxylamine
(Intermediate R1; 409 g, 1.90 mol) in DCM (2 L) was added a
solution of 3,5-dibromopyridine (320 g, 1.35 mol) in DCM (2.5 L) at
0-5.degree. C. The reaction was stirred for 16 h at this
temperature before ether (5 L) was added at 0-5.degree. C. The
suspension was filtered and the filter cake was washed with
Et.sub.2O (4 L) to give the title product (500 g, 82% yield), which
was directly used for the next step without further purifications.
.sup.1H NMR (d.sup.6-DMSO) .quadrature. 9.11 (s, 2H), 8.92 (s, 1H),
8.73 (s, 2H), 6.75 (s, 2H), 2.50 (s, 3H), 2.17 (s, 3H).
Step 2: Preparation of
4,6-dibromopyrazolo[1,5-a]pyridine-3-carbonitrile
[1457] To a mixture of 1-amino-3,5-dibromopyridin-1-ium
2,4,6-trimethylbenzenesulfonate (40 g, 88.5 mmol) in dioxane (400
mL) was added acrylonitrile (10.72 g, 202 mmol) and DIEA (14.8 g,
11.5 mmol), then stirred at ambient temperature for 3 h.
2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (41.8 g, 184 mmol) was
added to the reaction mixture and stirred at ambient temperature
for 3 hrs. The reaction mixture was poured into water (1.6 L),
filtered, and the resulting solid was purified by silica
chromatography (eluent=EtOAc/Petroleum ether 1:2) to afford the
title product as white solid (13.8 g, 52% yield). .sup.1H NMR
(CDCl.sub.3) .quadrature. 8.69 (d, J=1.4 Hz, 1H), 8.28 (s, 1H),
7.73 (d, J=1.4 Hz, 1H).
Step 3: Preparation of
1-((6-methoxypyridin-3-yl)methyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazine
[1458] A cold (0.degree. C.) solution of
1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine
(20.00 g, 69.16 mmol), 6-methoxynicotinaldehyde (10.43 g, 76.08
mmol), and acetic acid (0.40 mL, 6.916 mmol) in anhydrous DCM (350
mL) was treated with NaBH(OAc).sub.3 (21.99 g, 103.7 mmol), added
in 2 portions approximately 1 min apart. The resulting mixture was
stirred overnight at ambient temperature. The reaction mixture was
quenched with the addition of silica gel (40 g) and Celite.RTM. (40
g). The quenched mixture was stirred for 5 min at ambient
temperature before activated charcoal (20 g) was introduced. After
stirring for 10 min at ambient temperature, the mixture was
filtered through a silica gel plug (100 g) topped with Celite.RTM.
and the plug was rinsed with a solution of 70% acetone in DCM
(5.times.250 mL). The resultant filtrate was concentrated in vacuo.
The crude residue was diluted with heptane (80 mL), and the
solution was slowly treated with saturated NaHCO.sub.3(aq) (300
mL). The biphasic suspension was cooled in an ice bath to an
internal temperature of 10.degree. C., and subsequently vacuum
filtered, rinsing the filter cake with minimal cool water and cool
heptane. The filter cake was dissolved in MTBE, concentrated in
vacuo, and dried in a vacuum oven to cleanly afford the title
compound (20.66 g, 73% yield). MS (apci) m/z=411.2 (M+H).
Step 4: Preparation of
6-bromo-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-y-
l)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1459] A mixture of
4,6-dibromopyrazolo[1,5-a]pyridine-3-carbonitrile (55 mg, 0.18
mmol),
1-((6-methoxypyridin-3-yl)methyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazine (67 mg, 0.16 mmol),
Pd(PPh.sub.3).sub.4 (5.3 mg, 0.0046 mmol) and 2 M
Na.sub.2CO.sub.3(aq) (15 .mu.L, 135 mmol) in DMF (1.8 mL) was
stirred overnight at 60.degree. C. After cooling to ambient
temperature, the reaction mixture was directly purified by silica
chromatography (1-10% DCM:MeOH as the eluent) to afford the title
compound (79 mg, 86% yield). MS (apci) m/z=505.1 (M+1). .sup.1H NMR
showed 7:1 selectivity. .sup.1H NMR (400 MHz, CDCl.sub.3-d)
.quadrature. .quadrature. 8.68 (d, 1H), 8.32 (d, 1H), 8.25 (s, 1H),
8.08 (d, 1H), 7.68 (dd, 1H), 7.62 (dd, 1H), 7.37 (d, 1H), 6.74 (d,
2H), 3.94 (s, 3H), 3.65 (t, 4H), 3.49 (s, 2H), 2.55 (t, 4H).
Step 5: Preparation of
6-(1-isopropyl-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyridin-3-yl)methyl)pi-
perazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1460] A mixture of
6-bromo-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-y-
l)pyrazolo[1,5-a]pyridine-3-carbonitrile (24 mg, 0.0476 mmol),
1-isopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
(13.5 mg, 0.0571 mmol), Pd(PPh.sub.3).sub.4 (1.37 mg, 0.00119 mmol)
and 2 M Na.sub.2CO.sub.3(aq) (59.5 .mu.L, 0.119 mmol) in dioxane
(476 .mu.L) was stirred overnight at 90.degree. C. After cooling to
ambient temperature, the reaction mixture was directly purified by
C18 reverse-phase chromatography (5-95% water/ACN with 1% TFA as
the gradient eluent) to afford the title compound as the TFA salt.
The TFA salt was partitioned between DCM and saturated
NaHCO.sub.3(aq). After back-extracting the aqueous layer with DCM,
the combined organic extracts were washed with brine, dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to
cleanly afford the title compound (15.7 mg, 62% yield). MS (apci)
m/z=534.4 (M+H).
Example 698
##STR00908##
[1461]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of
4-(6-(piperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
dine-3-carbonitrile bis(2,2,2-trifluoroacetate)
[1462] A solution of
6-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl-
)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 590; 250 mg, 0.510
mmol) in TFA (10.2 mL, 5.10 mmol) was stirred overnight at
65.degree. C. After cooling to ambient temperature, the mixture was
concentrated in vacuo to afford the title compound (288 mg, 94%
yield), which was used in the next step without further
purification or analysis.
Step 2: Preparation of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1463] A solution of
4-(6-(piperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
dine-3-carbonitrile bis(2,2,2-trifluoroacetate) (288 mg, 0.481
mmol) in dry DMA (3 mL) was treated with TEA (213 .mu.L, 1.53
mmol), Me.sub.4N(AcO).sub.3BH (201 mg, 0.765 mmol) and
6-methoxynicotinaldehyde (84.0 mg, 0.612 mmol). The mixture was
stirred overnight at room temperature and then quenched with water
and CHCl.sub.3. The mixture was extracted with CHCl.sub.3, and the
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo. The crude
residue was first purified by C18 reverse-phase chromatography
using 15-50% ACN/water with 1% HCl as the gradient eluent and then
purified by C18 reverse-phase chromatography using 5-50 ACN/water
with 0.1% formic acid as the gradient eluent to afford the title
compound (40 mg, 16% yield). MS (apci) m/z=492.2 (M+H).
Example 699
##STR00909##
[1464]
4-(6-(4-((6-methoxypyridin-2-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1465] A room temperature solution of
4-(6-(piperazin-1-yl)pyridin-3-yl)-6-(1H-pyrazol-4-yl)pyrazolo[1,5-a]pyri-
dine-3-carbonitrile bis(2,2,2-trifluoroacetate) (Example 698, Step
1; 6 mg, 0.0162 mmol) in dry DMA (900 .mu.L) was treated
sequentially with TEA (22.6 .mu.L, 0.162 mmol) and
2-(bromomethyl)-6-methoxypyridine (9.82 mg, 0.0486 mmol). The
reaction mixture was stirred overnight at room temperature before
introducing additional TEA (1 .mu.L, 0.01 mmol) and
2-(bromomethyl)-6-methoxypyridine (2 mg, 0.01 mmol). The reaction
mixture was stirred at room temperature until LCMS indicated the
reaction was complete. The reaction mixture was directly purified
by C18 reverse-phase chromatography (15-80% ACN/water with 0.1%
formic acid as the gradient eluent) to cleanly afford the title
compound (2.5 mg, 51% yield). MS (apci) m/z=492.2 (M+H).
Example 700
##STR00910##
[1466]
(R)-6-(1-(2-hydroxypropyl)-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyri-
din-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carb-
onitrile
[1467] A solution of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 698;
Step 2; 18 mg, 0.0366 mmol) in 2-methoxyethanol (1 mL) was treated
sequentially with Cs.sub.2CO.sub.3 (40 mg, 0.123 mmol) and
(R)-2-methyloxirane (7.7 .mu.L, 0.110 mmol). The mixture was
stirred for 40 h at 75.degree. C. After cooling to ambient
temperature, the mixture was filtered to remove the inorganic
material (Cs.sub.2CO.sub.3), and the filtrate was directly purified
by C18 reverse-phase chromatography (10-80% ACN/water with 0.1%
formic acid as the gradient eluent) to afford the title compound
(13 mg, 65% yield). MS (apci) m/z=550.3 (M+H).
Example 701
##STR00911##
[1468]
(S)-6-(1-(2-hydroxypropyl)-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyri-
din-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carb-
onitrile
[1469] A solution of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 698;
Step 2; 23 mg, 0.0468 mmol) in 2-methoxyethanol (500 .mu.L) was
treated sequentially with Cs.sub.2CO.sub.3 (45.7 mg, 0.140 mmol)
and (S)-2-methyloxirane (8.2 mg, 0.140 mmol). The resulting mixture
was stirred at 75.degree. C. and monitored for completion by LCMS.
Upon completion the reaction mixture was cooled to ambient
temperature, then diluted with DCM and quenched with saturated
NH.sub.4Cl.sub.(aq). The biphasic mixture was extracted with DCM,
and the combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The crude
residue was purified by C18 reverse-phase chromatography (10-70%
ACN/water with 0.1% formic acid as the gradient eluent) to afford
the title compound (14.6 mg, 57% yield). MS (apci) m/z=550.3
(M+H).
Example 702
##STR00912##
[1470]
6-(1-(2-hydroxy-2-methylpropyl)-1H-pyrazol-4-yl)-4-(6-(4-((6-methox-
ypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-
-carbonitrile
[1471] A solution of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 698;
Step 2; 11.8 mg, 0.02401 mmol) in dry DMA (500 .mu.L) was treated
sequentially with Cs.sub.2CO.sub.3 (78.2 mg, 0.240 mmol) and
1-chloro-2-methylpropan-2-ol (12.3 .mu.L, 0.110 mmol). The
resulting mixture was stirred overnight at ambient temperature
before introducing additional 1-chloro-2-methylpropan-2-ol (12
.mu.L, 0.110 mmol). After stirring for 24 h at ambient temperature,
additional 1-chloro-2-methylpropan-2-ol (12.3 .mu.L, 0.110 mmol)
was introduced, and the reaction was monitored for completion by
LCMS. Upon completion, the reaction mixture was quenched with
water/CHCl.sub.3, and the biphasic mixture was extracted with
CHCl.sub.3 in a PS Frit. The combined organic extracts were
concentrated in vacuo, and the crude residue was purified by C18
reverse-phase chromatography (15-80% ACN/water with 0.1% formic
acid as the gradient eluent) to afford the title compound (1.9 mg,
14% yield). MS (apci) m/z=564.3 (M+H).
Example 703
##STR00913##
[1472]
6-(1-(2-(isopropylsulfonyl)ethyl)-1H-pyrazol-4-yl)-4-(6-(4-((6-meth-
oxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-
-3-carbonitrile
[1473] A solution of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 698;
Step 2; 23 mg, 0.047 mmol) in dry DMA (500 .mu.L) was treated
sequentially with Cs.sub.2CO.sub.3 (91 mg, 0.28 mmol) and
2-((2-chloroethyl)sulfonyl)propane (24 mg, 0.14 mmol). The
resulting mixture was stirred overnight at 60.degree. C. After
cooling to ambient temperature, the reaction mixture was diluted
with CHCl.sub.3 and quenched with saturated NH.sub.4Cl.sub.(aq).
The resulting biphasic mixture was extracted with CHCl.sub.3 in a
PS Frit. The combined organic extracts then were concentrated in
vacuo, and the crude residue was purified by C18 reverse-phase
chromatography (10-70% ACN/water with 0.1% formic acid as the
gradient eluent) to afford the title compound (14 mg, 48% yield).
MS (apci) m/z=626.3 (M+H).
[1474] The compounds in Table JJJ were prepared using a similar
method to that described for the synthesis of Example 703,
replacing 2-((2-chloroethyl)sulfonyl)propane with the appropriate
alkyl halide starting material and using temperatures ranging from
60.degree. C.-75.degree. C. Reaction progression in each example
was monitored by LCMS, and reaction times were adjusted as
necessary. Upon completion, reactions were quenched using
CHCl.sub.3 and either water or saturated NH.sub.4Cl.sub.(aq), then
worked up and purified using a method similar to that described in
Example 703 using the appropriate gradient eluent in C18
reverse-phase chromatographic purification.
TABLE-US-00067 TABLE JJJ MS Ex apci # Structure Chemical Name (m/z)
704 ##STR00914## 6-(1-(2- isopropoxyethyl)-1H-
pyrazol-4-yl)-4-(6-(4- ((6-methoxypyridin-3- yl)methyl)piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 578.4 (M
+ H) 705 ##STR00915## 4-(6-(4-((6- methoxypyridin-3-
yl)methyl)piperazin-1- yl)pyridin-3-yl)-6-(1- (tetrahydro-2H-pyran-
4-yl)-1H-pyrazol-4- yl)pyrazolo[1,5- a]pyridine-3- carbonitrile
576.4 (M + H) 706 ##STR00916## 3-(4-(3-cyano-4-(6-(4-
((6-methoxypyridin-3- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridin-6-yl)-1H- pyrazol-1-yl)-N,N-
dimethylpropanamide 591.3 (M + H) 707 ##STR00917##
(R)-6-(1-(3-hydroxy-2- methylpropyl)-1H- pyrazol-4-yl)-4-(6-(4-
((6-methoxypyridin-3- yl)methyl)piperazin-1- yl)pyridin-3-
yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 564.3 (M + H) 708
##STR00918## (S)-6-(1-(3-hydroxy-2- methylpropyl)-1H-
pyrazol-4-yl)-4-(6-(4- ((6-methoxypyridin-3- yl)methyl)piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 564.3 (M
+ H) 709 ##STR00919## 6-(1-(2- methoxypropyl)-1H-
pyrazol-4-yl)-4-(6-(4- ((6-methoxypyridin-3- yl)methyl)piperazin-1-
yl)pyridin-3- yl)pyrazolo[1,5- a]pyridine-3- carbonitrile 564.3 (M
+ H) 710 ##STR00920## 2-(4-(3-cyano-4-(6-(4- ((6-methoxypyridin-3-
yl)methyl)piperazin-1- yl)pyridiin-3- yl)pyrazolo[1,5-
a]pyridin-6-yl)-1H- pyrazol-1-yl)-N,N- dimethylacetamide 577.3 (M +
H)
Example 711
##STR00921##
[1475]
6-(1-(azetidin-3-Yl)-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyridin-3--
yl)methyl)-piperazin-1-1)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le bis(2,2,2-trifluoroacetate)
Step 1: Preparation of tert-butyl
3-(4-(3-cyano-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyrid-
in-3-yl)pyrazolo[1,5-a]pyridin-6-yl)-1H-pyrazol-1-yl)azetidine-1-carboxyla-
te
[1476] A solution of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 698;
Step 2; 60 mg, 0.12 mmol) in DMA (1 mL) was treated sequentially
with Cs.sub.2CO.sub.3 (240 mg, 0.73 mmol) and tert-butyl
3-iodoazetidine-1-carboxylate (100 mg, 0.370 mmol). The resulting
mixture was stirred for 4 h at 60.degree. C. After cooling to
ambient temperature, the reaction mixture was quenched with
saturated NH.sub.4Cl(aq). The resulting biphasic mixture was
extracted with CHCl.sub.3. The combined organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered and concentrated in
vacuo. The crude residue was purified by silica chromatography
(0-15% MeOH/EtOAc as the gradient eluent) to afford the title
compound (70 mg, 89% yield). MS (apci) m/z=647.3 (M+H).
Step 2: Preparation of
6-(1-(azetidin-3-yl)-1H-pyrazol-4-yl)-4-(6-(4-((6-methoxypyridin-3-yl)met-
hyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate)
[1477] A suspension of tert-butyl
3-(4-(3-cyano-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyrid-
in-3-yl)pyrazolo[1,5-a]pyridin-6-yl)-1H-pyrazol-1-yl)azetidine-1-carboxyla-
te (Step 1; 70 mg, 0.11 mmol) in DCM (1 mL) was treated with 5 M
HCl in iPrOH (110 .mu.L, 0.54 mmol). The resulting suspension was
stirred overnight at ambient temperature. The mixture was
solubilized using 1 M HCl.sub.(aq) and adjusted to pH 7 using 1 M
NaOH.sub.(aq). The biphasic mixture was extracted with DCM, and the
combined organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered and concentrated in vacuo. The crude
residue was purified by C18 reverse-phase chromatography (5-95%
ACN/water with 0.1% TFA as the gradient eluent) to cleanly afford
the title compound (4.4 mg, 7% yield). MS (apci) m/z=547.3
(M+H).
Example 712
##STR00922##
[1478] tert-butyl
4-(4-(3-cyano-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyrid-
in-3-yl)pyrazolo[1,5-a]pyridin-6-yl)-1H-pyrazol-1-yl)piperidine-1-carboxyl-
ate
[1479] A mixture of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(1H-
-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (Example 698;
Step 2; 0.070 g, 0.142 mmol) and Cs.sub.2CO.sub.3 (0.199 g, 0.610
mmol) in DMA (1 mL) was treated sequentially with tert-butyl
4-bromopiperidine-1-carboxylate (113 mg, 0.427 mmol). The resulting
mixture was stirred overnight at 75.degree. C. before introducing
additional Cs.sub.2CO.sub.3 (278 mg, 0.142 mmol) and tert-butyl
4-bromopiperidine-1-carboxylate (38 mg, 0.142 mmol). The resulting
mixture was stirred for 3 h at 75.degree. C. After cooling to
ambient temperature, the reaction mixture was diluted with DCM, and
quenched with saturated NH.sub.4Cl.sub.(aq). The resulting biphasic
mixture was extracted with DCM. The combined organic extracts were
dried over anhydrous Na.sub.2SO.sub.4, filtered and concentrated in
vacuo. The crude residue was purified by silica chromatography
(0-10% MeOH/EtOAc as the gradient eluent) to afford the title
compound (113 mg, quantitative yield). MS (apci) m/z=675.3
(M+H).
Example 713
##STR00923##
[1480]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1-(piperidin-4-yl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1481] A solution of tert-butyl
4-(4-(3-cyano-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyrid-
in-3-yl)pyrazolo[1,5-a]pyridin-6-yl)-1H-pyrazol-1-yl)piperidine-1-carboxyl-
ate (Example 712; 113 mg, 0.167 mmol) in DCM (1 mL) was treated
with 5 M HCl in iPrOH (200 .mu.L, 0.837 mmol). The resulting
mixture was stirred for 2 h at ambient temperature, before
concentrating in vacuo. The residue was solubilized using 1 M
HCl.sub.(aq), and then treated with 1 M NaOH.sub.(aq). The
resulting suspension was concentrated in vacuo, and the crude
residue was purified by C18 reverse-phase chromatography (10-70%
ACN/water with 0.1% formic acid as the gradient eluent) to cleanly
afford the title compound (42.3 mg, 52% yield). MS (apci) m/z=575.3
(M+H).
Example 714
##STR00924##
[1482]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(1-(1-methylpiperidin-4-yl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-c-
arbonitrile bis(2,2,2-trifluoroacetate)
[1483] A solution of tert-butyl
4-(4-(3-cyano-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyrid-
in-3-yl)pyrazolo[1,5-a]pyridin-6-yl)-1H-pyrazol-1-yl)piperidine-1-carboxyl-
ate (Example 712; 8 mg, 0.01 mmol) in Formic acid (89.4 .mu.L, 2.37
mmol) and formaldehyde (35.6 .mu.L, 0.474 mmol) was sealed and
stirred for 4 h at 90.degree. C. After cooling to ambient
temperature, the reaction mixture was concentrated in vacuo then
purified by C18 reverse-phase chromatography (5-95% ACN/water with
0.1% TFA as the gradient eluent) to cleanly afford the title
compound as the bis-TFA salt (3.8 mg, 54% yield). MS (apci)
m/z=589.3 (M+H).
Example 715
##STR00925##
[1484]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-(1-(2-methoxyethyl)piperidin-4-yl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile
Step 1: Preparation of
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperi-
dine hydrochloride
[1485] Cold (0.degree. C.) TFA (2 mL) was added to tert-butyl
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperi-
dine-1-carboxylate (1.5 g, 4.0 mmol), and the mixture was stirred
for 10 min at ambient temperature. The mixture was concentrated in
vacuo, and the resulting residue was treated with 4N HCl in dioxane
(5 mL). The reaction mixture was concentrated in vacuo, azeotroping
with ACN, and then dried under high vacuum to cleanly afford the
title compound (1.7 g, quantitative yield). MS (apci) m/z=278.2
(M+H).
Step 2: Preparation of
1-(2-methoxyethyl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H--
pyrazol-1-yl)piperidine
[1486] At ambient temperature, a solution
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperi-
dine hydrochloride (Step 1; 1.5 g, 4.8 mmol) in DMF (19 mL) was
treated sequentially with K.sub.2CO.sub.3 (2.3 g, 17 mmol) and
1-bromo-2-methoxyethane (1.1 mL, 12 mmol). The resulting mixture
was stirred for 3 h at 70.degree. C., then overnight at ambient
temperature. The reaction mixture was filtered, and the filtrate
was concentrated in vacuo. The resulting residue was suspended in
5% iPrOH/DCM (100 mL), and stirred for 5-10 min at ambient
temperature. The mixture was filtered through GF/F paper, and the
filtrate was concentrated and dried in vacuo. The resulting residue
was triturated with hexanes (5 mL) to afford the title compound
(2.43 g, quantitative yield). MS (apci) m/z=336.2 (M+H).
Step 3: Preparation of tert-butyl
4-(5-(3-cyano-6-(1-(1-(2-methoxyethyl)piperidin-4-yl)-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate
[1487] In a pressure tube, a mixture of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 100 mg,
0.181 mmol),
1-(2-methoxyethyl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2--
yl)-1H-pyrazol-1-yl)piperidine (60.7 mg, 0.181 mmol),
Pd.sub.2(dba).sub.3.CHCl.sub.3 (9.37 mg, 0.00905 mmol), XPhos (17.3
mg, 0.0362 mmol) and K.sub.2CO.sub.3(s) (75.0 mg, 0.543 mmol) in
4:1 dioxane/water (1.81 mL) was sparged for 5 min with N.sub.2(g),
and the pressure tube was sealed. The reaction mixture was stirred
overnight at 100.degree. C. After cooling to room temperature, the
reaction mixture was diluted with a solution of 5% iPrOH/DCM (20
mL) and washed with water (5 mL). The organic extracts were dried
over anhydrous MgSO.sub.4, filtered, and concentrated in vacuo to
afford the title compound which was carried forward without further
purification. MS (apci) m/z=611.9, 612.8 (M+H).
Step 4: Preparation of
6-(1-(1-(2-methoxyethyl)piperidin-4-yl)-1H-pyrazol-4-yl)-4-(6-(piperazin--
1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride
[1488] A room temperature solution of tert-butyl
4-(5-(3-cyano-6-(1-(1-(2-methoxyethyl)piperidin-4-yl)-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate in
TFA (2 mL) was stirred for 1 h at room temperature, and then
concentrated in vacuo. The crude residue was purified by C18
reverse-phase chromatography (5-80% ACN/water with 0.1% TFA as the
gradient eluent) to cleanly afford the title compound as the TFA
salt. The TFA salt was suspended in DCM (1 mL) containing a few
drops of MeOH, then treated with 4 N HCl in dioxane (2 mL). The
resulting mixture was concentrated and dried in vacuo to cleanly
afford the title compound as the dihydrochloride salt (45 mg, 43%
yield). MS (apci) m/z=511.9 (M+H).
Step 5: Preparation of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-(1-(2-methoxyethyl)piperidin-4-yl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-
e-3-carbonitrile
[1489] A solution of
6-(1-(1-(2-methoxyethyl)piperidin-4-yl)-1H-pyrazol-4-yl)-4-(6-(piperazin--
1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
dihydrochloride (31 mg, 0.053 mmol) in DMF (1.1 mL) was treated
with D-alpha-Hydroxyisovaleric acid (7.5 mg, 0.064 mmol), HATU
(24.2 mg, 0.0636 mmol) and DIEA (46.2 .mu.L, 0.265 mmol). The
resulting solution was stirred overnight at ambient temperature.
The reaction mixture was diluted with 5% MeOH/DCM (20 mL) and
washed with water (5 mL). The combined organic extracts were dried
over anhydrous MgSO.sub.4, then filtered and concentrated in vacuo.
The crude residue was purified by silica chromatography (8%
MeOH/DCM with 2% NH.sub.4OH.sub.(aq) as the eluent) to cleanly
afford the title compound (20 mg, 62% yield). MS (apci) m/z=611.9,
612.9 (M+1).
Example 716
##STR00926##
[1490]
(R)-6-(1-(3-hydroxy-2-methylpropyl)-5-methyl-1H-pyrazol-3-yl)-4-(6--
(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-
-a]pyridine-3-carbonitrile
[1491] A mixture of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(3--
methyl-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
(Example 636; 8 mg, 0.0158 mmol), (S)-3-bromo-2-methylpropan-1-ol
(2.91 mg, 0.0190 mmol) and Cs.sub.2CO.sub.3 (25.8 mg, 0.0791 mmol)
in DMA (200 .mu.L) was stirred overnight at ambient temperature,
then purified directly by C18 reverse-phase chromatography (0-60%
ACN/water as the gradient eluent) to afford the title compound (3.3
mg, 36% yield). MS (apci) m/z=578.3 (M+H).
Example 717
##STR00927##
[1492]
(S)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1493] A solution of
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]-
pyridine-3-carbonitrile dihydrochloride (Example 624; 21.3 mg,
0.0465 mmol) in dry DMF (500 .mu.L) was treated sequentially with
DIEA (24.3 .mu.L, 0.139 mmol), HATU (26.5 mg, 0.0697 mmol) and
(S)-2-hydroxy-2-phenylacetic acid (10.6 mg, 0.0697 mmol). The
resulting solution was stirred 4 d at ambient temperature, during
which time additional amounts of DIEA, HATU and
(R)-2-hydroxy-2-phenylacetic acid were added (1 equivalent/day of
each, total of 3 additional equivalents of each reagent) in an
effort to drive the reaction to completion. The reaction mixture
was quenched with water/CHCl.sub.3, and the resulting biphasic
mixture was extracted with CHCl.sub.3 in a PS Frit. The combined
organic extracts were concentrated in vacuo and purified by C18
reverse-phase chromatography (25-80% ACN in water with 0.1% formic
acid as the gradient eluent) to afford the title compound (2.3 mg,
10% yield). MS (apci) m/z=520.2 (M+H).
Example 718
##STR00928##
[1494]
(R)-4-(6-(4-(2-hydroxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1495] Following a similar method to that used in Step 2 for the
preparation and purification of Example 717, replacing
(S)-2-hydroxy-2-phenylacetic acid with (R)-2-hydroxy-2-phenylacetic
acid, the title compound was isolated cleanly (2.6 mg, 11% yield).
MS (apci) m/z=520.2 (M+H).
Example 719
##STR00929##
[1496]
(S)-4-(6-(4-(2-methoxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1497] Following a similar method to that used in Step 2 for the
preparation and purification of Example 717, replacing
(S)-2-hydroxy-2-phenylacetic acid with (S)-2-methoxy-2-phenylacetic
acid, omitting the addition of extra reagents and using anhydrous
Na.sub.2SO.sub.4 rather than the PS Frit as the drying agent, the
title compound was isolated cleanly (6.3 mg, 32% yield). MS (apci)
m/z=534.2 (M+H).
Example 720
##STR00930##
[1498]
(R)-4-(6-(4-(2-methoxy-2-phenylacetyl)piperazin-1-yl)pyridin-3-yl)--
6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1499] Following a similar method to that used in Step 2 for the
preparation and purification of Example 717, replacing
(S)-2-hydroxy-2-phenylacetic acid with (R)-2-methoxy-2-phenylacetic
acid, and omitting the addition of extra reagents, the title
compound was isolated cleanly (4.3 mg, 18% yield). MS (apci)
m/z=534.2 (M+H).
Example 721
##STR00931##
[1500]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(2-methyloxazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1501] A solution of
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]-
pyridine-3-carbonitrile dihydrochloride (Example 624; 20.1 mg,
0.0439 mmol) in dry DMA (500 .mu.L) was treated with TEA (18.3
.mu.L, 0.132 mmol), Me.sub.4N(AcO).sub.3BH (17.3 mg, 0.0658 mmol)
and 6-methoxynicotinaldehyde (9.02 mg, 0.0658 mmol). The resulting
mixture was stirred at ambient temperature for 5 hours, before
introducing additional TEA (6.1 .mu.L, 0.044 mmol),
Me.sub.4N(AcO).sub.3BH (11.5 mg, 0.044 mmol) and
6-methoxynicotinaldehyde (6.01 mg, 0.044 mmol). The reaction
mixture was stirred overnight at ambient temperature, then treated
with additional TEA and 6-methoxynicotinaldehyde (20 .mu.L of
each). The reaction mixture was stirred for an additional 3 d
before quenching with water/CHCl.sub.3. The quenched mixture was
extracted with CHCl.sub.3 in a PS Frit, and the combined organic
extracts were concentrated in vacuo. The crude residue was purified
by C18 reverse-phase chromatography (15-80% ACN/water as the
gradient eluent) to afford the title compound (2.7 mg, 12% yield).
MS (apci) m/z=506.8 (M+H).
Example 722
##STR00932##
[1502]
6-(2-methyloxazol-5-yl)-4-(6-(4-(pyridin-2-ylmethyl)piperazin-1-yl)-
pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1503] A solution of
6-(2-methyloxazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]-
pyridine-3-carbonitrile dihydrochloride (Example 624; 21.7 mg,
0.0473 mmol) in dry DMA (500 .mu.L) was treated sequentially with
TEA (19.8 .mu.L, 0.142 mmol), Me.sub.4N(AcO).sub.3BH (18.7 mg,
0.071 mmol) and picolinaldehyde (6.8 .mu.L, 0.071 mmol). The
resulting mixture was stirred at ambient temperature for 5 hours
before introducing additional TEA (6.6 .mu.L, 0.048 mmol),
Me.sub.4N(AcO).sub.3BH (12.5 mg, 0.047 mmol) and picolinaldehyde
(4.5 .mu.L, 0.047 mmol). The reaction mixture was stirred overnight
at ambient temperature, then quenched with water/CHCl.sub.3. The
quenched mixture was extracted with CHCl.sub.3 in a PS Frit, and
the combined organic extracts were concentrated in vacuo. The crude
residue was purified by C18 reverse-phase chromatography (15-90%
ACN/water as the gradient eluent) to afford the title compound (4.4
mg, 20% yield). MS (apci) m/z=477.2 (M+H).
Example 723
##STR00933##
[1504]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(2-methylthiazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-(2-methylthiazol-5-yl)pyrazolo[1,5-a]pyridin-4-yl)pyridin-
-2-yl)piperazine-1-carboxylate
[1505] In a pressure tube, a mixture of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 100 mg,
0.181 mmol),
2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole
(48.9 mg, 0.217 mmol), Pd.sub.2(dba).sub.3.CHCl.sub.3 (9.37 mg,
0.00905 mmol), XPhos (17.3 mg, 0.0362 mmol) and K.sub.2CO.sub.3(s)
(75.0 mg, 0.543 mmol) in 4:1 dioxane/water (1.81 mL) was sparged
for 5 min with N.sub.2(g). The vessel was sealed and the reaction
mixture was stirred overnight at 100.degree. C. After cooling to
room temperature, the reaction mixture was diluted with EtOAc (20
mL) and washed with water (5 mL). The organic extracts were dried
over anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
crude residue was purified by silica chromatography (2-40%
acetone/DCM as the gradient eluent) to afford the title compound
(80 mg, 88% yield). MS (apci) m/z=502.2 (M+H).
Step 2: Preparation of
6-(2-methylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile dihydrochloride
[1506] A solution of tert-butyl 4-(5-(3-cyano-6-(2-methylthiazol
5-yl)pyrazo
pyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate
(78 g, 156 mmol) in TFA (2 mL) was stirred for 30 min at ambient
temperature, and then concentrated in vacuo. The residue was
dissolve in DCM (1 mL) and treated with 4 N HCl (2 mL) in dioxane.
The resulting suspension was stirred for 10 min at ambient
temperature. The mixture was concentrated in vacuo, azeotroping
with ACN to cleanly afford the title compound as the
dihydrochloride salt which was carried on without further
purification. MS (apci) m/z=402.1 (M+H).
Step 3: Preparation of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(2-
-methylthiazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
[1507] A solution of
6-(2-methylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile dihydrochloride (42 mg, 0.0885 mmol) in
DCM (3 mL) was treated with DIEA (61.7 .mu.L, 0.354 mmol),
D-alpha-Hydroxyisovaleric acid (12.5 mg, 0.106 mmol) and HATU (40.4
mg, 0.106 mmol). The resulting solution was stirred overnight at
ambient temperature. The reaction mixture was concentrated in
vacuo, and the crude residue was purified by C18 reverse-phase
chromatography (5-95% ACN/water with 0.1% TFA as the gradient
eluent) to cleanly afford the title compound as the
bistrifluoroacetate salt (15 mg, 28% yield). MS (apci) m/z=502.2
(M+H).
Example 724
##STR00934##
[1508]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-6-(2-methylthiazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
Step 1: Preparation of
6-(2-methylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile
[1509] A solution of
6-(2-methylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile dihydrochloride (Example 723, Step 2; 37
mg, 0.0780 mmol) in MeOH (7.8 mL) and water (2 mL) containing
several drops of AcOH was extracted with 5% iPrOH/DCM (30 mL). The
organic extracts were washed with saturated NaHCO.sub.3(aq) and
brine. The neutralized organic phase was then dried over anhydrous
MgSO.sub.4, filtered, and concentrated in vacuo to afford the title
compound as the free base (28 mg, 90% recovery). MS (apci)
m/z=502.2 (M+H).
Step 2: Preparation of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(2--
methylthiazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
[1510] A solution of
6-(2-methylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a-
]pyridine-3-carbonitrile (28.0 mg, 0.0697 mmol) in MeOH (2.0 mL)
was treated sequentially with 6-methoxynicotinaldehyde (19.1 mg,
0.139 mmol), NaBH(AcO).sub.3 (41 mg, 0.209 mmol) and 2-3 drops of
AcOH. The resulting mixture was stirred at ambient temperature
overnight. About 60% of unreacted starting material remained in the
mixture. Therefore, additional acetic acid (0.5 mL) was added and
the reaction mixture was stirred for another 24 h, but this failed
to drive the reaction to completion. Therefore the mixture was
concentrated in vacuo. The residue obtained was re-suspended in DCM
(10 mL) and re-treated with 6-methoxynicotinaldehyde (30.7 mg,
0.224 mmol), NaBH(AcO).sub.3 (65.8 mg, 0.336 mmol) and AcOH (1 mL).
The resulting mixture was stirred for 36 h at ambient temperature
and then quenched with water. The quenched mixture was extracted
with DCM. The combined organic extracts were dried over anhydrous
MgSO.sub.4, filtered, and concentrated in vacuo. The crude residue
was purified by C18 reverse-phase chromatography (5-95% ACN/water
with 0.1% TFA as the gradient eluent) to afford the title compound
as the mono trifluoroacetate salt (12.7 mg, 12% yield). MS (apci)
m/z=523.2 (M+H).
Example 725
##STR00935##
[1511]
6-(2,4-dimethylthiazol-5-yl)-4-(6-(4-((6-methoxypyridin-3-yl)methyl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-(2,4-dimethylthiazol-5-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate
[1512] In a pressure tube, a mixture of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 50 mg,
0.0905 mmol),
2,4-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazo-
le (26.0 mg, 0.109 mmol), Pd.sub.2(dba).sub.3.CHCl.sub.3 (4.68 mg,
0.00452 mmol), XPhos (8.63 mg, 0.0181 mmol) and K.sub.2CO.sub.3(s)
(37.5 mg, 0.271 mmol) in 4:1 dioxane/water (0.91 mL) was sparged
for 5 min with N.sub.2(g). The pressure tube was sealed and the
reaction mixture was stirred overnight at 100.degree. C. After
cooling to room temperature, the reaction mixture was diluted with
EtOAc (20 mL) and washed with water (5 mL). The organic layer was
dried over anhydrous MgSO.sub.4, filtered, and concentrated in
vacuo. The crude residue was purified by silica chromatography (30%
acetone/DCM as the eluent) to afford the title compound (58.2 mg,
quantitative yield). MS (apci) m/z=516.2 (M+H).
Step 2: Preparation of
6-(2,4-dimethylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile dihydrochloride
[1513] A solution of tert-butyl
4-(5-(3-cyano-6-(2,4-dimethylthiazol-5-yl)pyrazolo[1,5-a]pyridin-4-yl)pyr-
idin-2-yl)piperazine-1-carboxylate (45 mg, 0.087 mmol) in TFA (2
mL) was stirred for 20 min at ambient temperature, and then
concentrated in vacuo. The residue was dissolved in DCM (2 mL) and
treated with a solution of 4 N HCl in dioxane (2 mL). After
stirring for 10 min at ambient temperature, the suspension was
concentrated in vacuo to afford the title compound as the
dihydrochloride salt which was used in the next step without
further purification (41 mg, 96% yield). MS (apci) m/z=416.2
(M+H).
Step 3: Preparation of
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-6-(2--
methylthiazol-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
[1514] A mixture of
6-(2,4-dimethylthiazol-5-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (45 mg, 0.108 mmol) in methanol (1083
.mu.L, 0.108 mmol) was sequentially treated with
6-methoxynicotinaldehyde (29.7 mg, 0.217 mmol), Na(OAc).sub.3BH
(63.7 mg, 0.325 mmol) and 2-3 drops of acetic acid. The resulting
mixture was stirred at ambient temperature overnight to reach about
50% conversion by LCMS. The mixture was re-treated with additional
6-methoxynicotinaldehyde (29.7 mg, 0.217 mmol), Na(OAc).sub.3BH
(63.7 mg, 0.325 mmol) and a few drops of acetic acid and allowed to
stir at ambient temperature over 48 h. The reaction still did not
go to completion (LCMS). Additional acetic acid (0.5 mL) was added
and the mixture was allowed to stir at ambient temperature for
another 24 h. This failed to drive the reaction to completion. The
mixture was retreated with additional acetic acid (0.5 mL) and
stirred at 45.degree. C. for 4 hours before it was concentrated in
vacuo. The resulting residue was taken up in DCE (5 mL), then
re-treated with 6-methoxynicotinaldehyde (29.7 mg, 0.217 mmol),
Na(OAc).sub.3BH (63.7 mg, 0.325 mmol) and few drops of acetic acid.
The resulting mixture was stirred at ambient temperature. After 24
h the mixture was diluted with DCM (15 mL) and washed with brine (5
mL). The organic layer was separated, dried over MgSO.sub.4 and
concentrated in vacuo. The residue was purified by silica
chromatography (5-75% acetone/hexanes) to provide the title product
as a solid (10.1 mg, 17.4% yield). MS (apci) m/z=537.2 (M+H).
Example 726
##STR00936##
[1515]
6-(1-methyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-y-
l)pyrazolo[1,5-a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-((trimethylsilyl)ethynyl)pyrazolo[1,5-a]pyridin-4-yl)pyri-
din-2-yl)piperazine-1-carboxylate
[1516] In a pressure tube, a mixture of tert-butyl
4-(5-(3-cyano-6-(((trifluoromethyl)sulfonyl)oxy)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (Intermediate P14; 200 mg,
0.362 mmol), Cu(I)I (13.8 mg, 0.0724 mmol),
PdCl.sub.2(PPh.sub.3).sub.2 (25.4 mg, 0.0362 mmol), TEA (151 .mu.L,
1.09 mmol), and PPh.sub.3 (4.75 mg, 0.0181 mmol) in DMF (1.45 mL)
was sparged for 5 min with N.sub.2(g). The sparged mixture was
treated with ethynyltrimethylsilane (60.2 .mu.L, 0.434 mmol), and
sparged again for 5 min with N.sub.2(g), before sealing the vessel.
The reaction mixture was stirred for 6 h at 65.degree. C., then
overnight at ambient temperature. The reaction mixture was poured
into water (10 mL), and extracted with EtOAc. The combined organic
extracts were washed with brine, then dried over anhydrous
MgSO.sub.4, filtered, and concentrated in vacuo. The crude product
residue was purified by silica chromatography (2-40% EtOAc/hexanes
as the gradient eluent) to afford the title compound (142 mg, 78%
yield). MS (apci) m/z=501.2 (M+H).
Step 2: Preparation of tert-butyl
4-(5-(3-cyano-6-ethynylpyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-
e-1-carboxylate
[1517] A solution of tert-butyl 4-(5-(3-cyano-6-((trimethyl
silyl)ethynyl)pyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazine-1-carbo-
xylate (140 mg, 0.280 mmol) in MeOH (2.8 mL) was treated with
powdered K.sub.2CO.sub.3 (11.6 mg, 0.0839 mmol). The resulting
mixture was stirred for 3 h at ambient temperature, before
concentrating the mixture in vacuo. The resulting residue was
partitioned between EtOAc (50 mL) and water (10 mL). The organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo. The crude product residue was purified by
silica chromatography (10-70% acetone/DCM as the gradient eluent)
to afford the title compound (121.3 mg, quantitative yield). MS
(apci) m/z=492.2 (M+H).
Step 3: Preparation of tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate
[1518] A slurry of tert-butyl
4-(5-(3-cyano-6-ethynylpyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazin-
e-1-carboxylate (55 mg, 0.13 mmol) in 1:1 t-BuOH:H.sub.2O (2 mL)
was treated with CuSO4 (4.1 mg, 0.026 mmol), sodium
(R)-5-((S)-1,2-dihydroxyethyl)-4-hydroxy-2-oxo-2,5-dihydrofuran-3-olate
(13 mg, 0.064 mmol) and (azidomethyl)trimethylsilane (17 mg, 0.13
mmol). The resulting reaction mixture was stirred for 15 h at
ambient temperature before introducing additional
(azidomethyl)trimethylsilane (10 mg, 0.076 mmol), and sodium
(R)-5-((S)-1,2-dihydroxyethyl)-4-hydroxy-2-oxo-2,5-dihydrofuran-3-olate
(13 mg, 0.064 mmol), CuSO4 (4.1 mg, 0.026 mmol). The mixture then
was stirred for an additional 3d at ambient temperature before
diluting the mixture with water (20 mL). The aqueous mixture was
extracted with EtOAc (3.times.30 mL). The combined organic extracts
were dried over anhydrous MgSO.sub.4, filtered, and concentrated in
vacuo to afford the intermediate tert-butyl
4-(5-(3-cyano-6-(1-((trimethylsilyl)methyl)-1H-1,2,3-triazol-4-yl)pyrazol-
o[1,5-a]pyridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate (MS apci
(m/z)=558.3 (M+H)) and unreacted alkyne. The crude mixture was
dissolved in THF (2 mL), and treated with 1 M TBAF in THF (128 L,
0.13 mmol). The resulting reaction mixture was stirred for 2 h at
ambient temperature, then diluted with EtOAc (30 mL) and washed
with water (10 mL). The organic extracts were washed with brine (10
mL), dried over anhydrous MgSO.sub.4, filtered, and concentrated in
vacuo to afford a 2:1 mixture of the title compound (about 41 mg,
66% yield, based on LCMS % and total mass; MS (apci) m/z=486.2
(M+H)) and some unreacted alkyne. The crude mixture was used in the
next step without purification.
Step 4: Preparation of
6-(1-methyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate
[1519] A solution of the impure tert-butyl
4-(5-(3-cyano-6-(1-methyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4--
yl)pyridin-2-yl)piperazine-1-carboxylate (41 mg, 0.084 mmol) in TFA
(2 mL) was stirred for 1 h at ambient temperature, and then
concentrated in vacuo to afford the title compound in a 2:1 ratio
with the unreacted alkyne carried over from Step 3. The TFA salt of
the pure title compound (27 mg, 42% overall yield from Step 2) was
isolated by purification of the impure mixture by C18 reverse-phase
chromatography (5-95% ACN/water with 0.1% TFA as the gradient
eluent). MS (apci) m/z=385.9, 386.9 (M+H).
Example 727
##STR00937##
[1520]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
-6-(1-methyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
Step 1: Preparation of
6-(1-methyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile hydrochloride
[1521] A solution of
6-(1-methyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile 2,2,2-trifluoroacetate (Example
726, Step 4; 27 mg, 0.0541 mmol) in 4 N HCl in dioxane (2 mL) was
stirred for 5 min at ambient temperature. The mixture was
concentrated in vacuo, azeotroping with MeOH, to afford the title
compound (22 mg, 96% yield). This material was used directly in
Step 2 without further purification or analysis.
Step 2: Preparation of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-methyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
[1522] A suspension of
6-(1-methyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)pyra-
zolo[1,5-a]pyridine-3-carbonitrile hydrochloride (22 mg, 0.0521
mmol) in DMF (1.5 mL) was treated with DIEA (45.4 .mu.L, 0.261
mmol), D-alpha-Hydroxyisovaleric acid (7.39 mg, 0.0626 mmol) and
HATU (23.8 mg, 0.0626 mmol). The resulting solution was stirred
overnight at ambient temperature. The reaction mixture was diluted
with 5% MeOH/DCM (20 mL) and washed with water (5 mL). The organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo. The crude residue was triturated with 2:1
MeOH:TFA (2.25 mL). The precipitate that formed was collected by
filtration, then rinsed with ACN (0.5 mL) and dried in vacuo to
cleanly afford the title compound as the trifluoroacetate salt (12
mg, 38% yield). MS (apci) m/z=485.8, 486.9 (M+H).
Example 728
##STR00938##
[1523] tert-butyl
4-(5-(3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperazine-1-carboxylate
Step 1: Preparation of
4-methoxy-6-((trimethylsilyl)ethynyl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
[1524] In a pressure tube, a mixture of
6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P4; 1.0 g, 3.97 mmol), Cu(I)I (0.151 g, 0.793 mmol),
PdCl.sub.2(PPh.sub.3).sub.2 (0.278 g, 0.397 mmol), TEA (1.66 mL,
11.9 mmol), and PPh.sub.3 (52 mg, 0.198 mmol) in DMF (16 mL) was
sparged for 5 min with N.sub.2(g). The sparged mixture was treated
with ethynyltrimethylsilane (659 .mu.L, 4.76 mmol) and flushed with
N.sub.2(g), before sealing the vessel. The reaction mixture was
stirred for 6 h at 65.degree. C., then overnight at ambient
temperature. At room temperature, the reaction mixture was poured
into water (20 mL), and extracted with EtOAc (2.times.50 mL). The
combined organic extracts were washed with brine (10 mL), then
dried over anhydrous MgSO.sub.4, filtered, and concentrated in
vacuo. The crude product residue was purified by silica
chromatography (2-40% EtOAc/hexanes as the gradient eluent) to
afford the title compound (700 mg, 66% yield). .sup.1H NMR (400
MHz, CDCl.sub.3) .quadrature..quadrature. 8.30 (d, J=0.78 Hz, 1H),
8.16 (s, 1H), 6.64 (d, J=0.78 Hz, 1H), 4.02 (s, 3H), 0.26 (s,
9H)
Step 2: Preparation of
6-ethynyl-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile
[1525] A solution of
4-methoxy-6-((trimethylsilyl)ethynyl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le (Step 1; 0.7 g, 2.60 mmol) in MeOH (26 mL) was treated with
powdered K.sub.2CO.sub.3 (0.108 g, 0.780 mmol). The resulting
mixture was stirred for 3 h at ambient temperature before
concentrating the mixture in vacuo. The resulting residue was
partitioned between EtOAc (100 mL) and water (30 mL). The organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo to afford the title compound (530 mg,
quantitative yield), which was carried on without further
purification. .sup.1HNMR (400 MHz, CDCl.sub.3) .quadrature.
.quadrature. 8.331 (d, J=1.17 Hz, 1H), 8.17 (s, 1H), 6.66 (d,
J=0.78 Hz, 1H), 4.04 (s, 3H), 3.16 (s, 1H).
Step 3: Preparation of
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-methoxypyrazolo[1,5-a]pyridine-3--
carbonitrile
[1526] A mixture of isopropyl bromide (1.43 mL, 15.2 mmol) and
sodium azide (989 mg, 15.2 mmol) in 1:2 t-BuOH:H.sub.2O (3 mL) was
stirred for 2 h at 80.degree. C. After cooling to ambient
temperature, the reaction mixture was treated with
6-ethynyl-4-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile (300 mg,
1.52 mmol) and Cu(I)I (29.0 mg, 0.152 mmol). The resulting reaction
mixture was stirred for 16 h at 80.degree. C. The mixture was
cooled to ambient temperature, diluted with EtOAc (100 mL) and
washed with water (30 mL). The organic extracts were dried over
anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
crude residue was triturated with ACN. The precipitate that formed
was collected by filtration, then rinsed with ACN and dried in
vacuo to cleanly afford the title compound (294 mg, 69% yield). MS
(apci) m/z=283.0 (M+H).
Step 4: Preparation of
4-hydroxy-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3--
carbonitrile
[1527] Two batches of
6-(1-Isopropyl-1H-1,2,3-triazol-4-yl)-4-methoxypyrazolo[1,5-a]pyridine-3--
carbonitrile (total 290 mg) were processed as described below to
provide the title compound.
[1528] Batch 1:
6-(1-Isopropyl-1H-1,2,3-triazol-4-yl)-4-methoxypyrazolo[1,5-a]pyridine-3--
carbonitrile (150 mg, 0.531 mmol) was suspended in
1,2-dichloroethane (5.3 mL, 0.531 mmol) and heated to 80.degree. C.
At 50.degree. C. the mixture became a clear solution. The resulting
solution was cooled to 50.degree. C. and treated with AlCl.sub.3
(283 mg, 2.13 mmol) and heated at reflux for 4 h with vigorous
stirring. The mixture was then allowed to stir at ambient
temperature overnight and 80.degree. C. for 3 h. The mixture was
cooled to 0.degree. C. and poured into a mixture of
Na.sub.2SO.sub.4-10H.sub.2O (3355 mg, 10.4 mmol) in THF (20
mL).
[1529] Batch 2: A second batch of
6-(1-Isopropyl-1H-1,2,3-triazol-4-yl)-4-methoxypyrazolo[1,5-a]pyridine-3--
carbonitrile (140 mg) was also processed as described above to
obtain a second crude batch of the title compound. The crude
products obtained from the two reactions were combined and purified
by silica chromatography (1-10% MeOH/DCM) to provide the title
compound (200 mg, 71.6% yield, from 290 mg of starting material).
MS (APCI+) m/z 269.1 (M+1).
Step 5: Preparation of
3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate
[1530] An ambient temperature solution of
4-hydroxy-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3--
carbonitrile (200 mg, 0.746 mmol) and DIEA (649 .mu.L, 3.73 mmol)
in THF (7.46 .mu.L) was treated with
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide
(533 mg, 1.49 mmol). The resulting mixture was stirred for 6 h at
ambient temperature, and then stored in the freezer 3 d. The
mixture was poured into water (20 mL), and extracted with DCM (100
mL). The organic extracts were dried over anhydrous MgSO.sub.4,
filtered, and concentrated in vacuo. The residue obtained was
purified by silica chromatography (10-90% EtOAc/hexane as the
gradient eluent) to afford the title compound (220 mg, 74% yield).
.sup.1H NMR (400 MHz, CDCl.sub.3) 09.08 (d, J=0.74 Hz, 1H), 8.31
(s, 1H), 7.91 (d, J=0.78, 1H), 7.86 (s, 1H), 4.95-4.88 (m, 1H),
1.65 (d, 6H).
Step 6: Preparation tert-butyl
4-(5-(3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperazine-1-carboxylate
[1531] In a pressure tube, a mixture of
3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (50 mg, 0.12 mmol), tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine-
-1-carboxylate (49 mg, 0.12 mmol), Pd.sub.2(dba).sub.3.CHCl.sub.3
(6.5 mg, 0.0062 mmol), XPhos (12 mg, 0.025 mmol),
K.sub.2CO.sub.3(s) (52 mg, 0.37 mmol) in 4:1 dioxane/water (1.25
mL) was sparged for 5 min with N.sub.2(g), and subsequently the
vessel was sealed. The reaction mixture was stirred overnight at
100.degree. C. After cooling to room temperature, the reaction
mixture was diluted with DCM (20 mL) and washed with water (5 mL).
The organic extracts were dried over anhydrous MgSO.sub.4,
filtered, and concentrated in vacuo. The residue obtained was
purified by silica chromatography (1-40% acetone/DCM as the
gradient eluent) to afford the title compound (60 mg, 94% yield).
MS(apci) m/z=513.8 (M+H).
Example 729
##STR00939##
[1532]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile 2,2,2-trifluoroacetate
Step 1: Preparation of
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile hydrochloride
[1533] A solution of tert-butyl
4-(5-(3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-
-4-yl)pyridin-2-yl)piperazine-1-carboxylate (Example 728, Step 6;
59 mg, 0.11 mmol) in TFA (2 mL) was stirred for 1 h at ambient
temperature. The resulting mixture was concentrated in vacuo. The
residue was dissolved in DCM (1 mL) and treated with 4 N HCl in
dioxane (2 mL). The resulting suspension was stirred for 10 min at
ambient temperature and then concentrated in vacuo to afford the
title compound (55 mg, quantitative yield). MS (apci) m/z=413.9
(M+H).
Step 2: Preparation of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
2,2,2-trifluoroacetate
[1534] A suspension of
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine-3-carbonitrile hydrochloride (50 mg, 0.111
mmol) in DMF (1.5 mL) was treated with DIEA (96.8 .mu.L, 0.556
mmol), D-alpha-Hydroxyisovaleric acid (15.8 mg, 0.133 mmol) and
HATU (50.7 mg, 0.133 mmol). The resulting solution was stirred
overnight at ambient temperature. The reaction mixture was diluted
with 5% MeOH/DCM (20 mL), and washed with water (5 mL). The organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo. The crude residue was purified by C18
reverse-phase chromatography (5-95% ACN/water with 0.1% TFA as the
gradient eluent) to cleanly afford the title compound as the
trifluoroacetate salt (12 mg, 17% yield). MS (apci) m/z=513.9
(M+H).
Example 730
##STR00940##
[1535]
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(4-((6-methoxypyridin-3--
yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le bis(2,2,2-trifluoroacetate)
[1536] In a pressure tube, a mixture of
3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Example 728, Step 5; 50 mg, 0.12 mmol),
1-((6-methoxypyridin-3-yl)methyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazine (Example 697, Step 3; 61 mg,
0.15 mmol), Pd.sub.2(dba).sub.3.CHCl.sub.3 (6.5 mg, 0.0062 mmol),
XPhos (12 mg, 0.025 mmol), K.sub.2CO.sub.3(s) (52 mg, 0.37 mmol) in
4:1 dioxane/water (1.25 mL) was sparged for 5 min with N.sub.2(g),
and subsequently the vessel was sealed. The reaction mixture was
stirred overnight at 100.degree. C. After cooling to room
temperature, the reaction mixture was diluted with 5% MeOH/DCM (20
mL), and washed with water (5 mL). The organic extracts were dried
over anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
residue obtained was purified by silica chromatography (5-70%
acetone/DCM as the gradient eluent), and then again by C18
reverse-phase chromatography (5-95% ACN/water with 0.1% TFA as the
gradient eluent) to afford the title compound as the
bistrifluoroacetate salt (55 mg, 58% yield). MS(apci) m/z=534.8,
535.8 (M+H).
Example 731
##STR00941##
[1537]
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(4-(pyridin-2-ylmethyl)p-
iperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bi s(2,2,2-trifluoroacetate)
Step 1: Preparation of
1-(pyridin-2-ylmethyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
pyridin-2-yl)piperazine
[1538] A solution of
1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine
(3 g, 10.4 mmol), in DCM (85 mL) was treated with picolinaldehyde
(1.22 g, 11.4 mmol). The resulting mixture was stirred for 1 h at
ambient temperature before introducing NaBH(OAc).sub.3 (4.40 g,
20.7 mmol). The resulting mixture was stirred overnight at ambient
temperature, and then concentrated in vacuo. The residue was
dissolved in EtOAc, and washed sequentially with saturated
NaHCO.sub.3(aq) and brine. The organic extracts were dried over
anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in vacuo.
The resulting thick oil was dissolved in minimal boiling EtOAc, and
the resulting solution was allowed to cool. The crystals that
formed were collected by vacuum filtration, washed with hexanes and
dried under high vacuum to cleanly afford the title compound (2.88
g, 73% yield). .sup.1H NMR (CDCl.sub.3) .delta. 8.58-8.59 (m, 1H),
8.53 (m, 1H), 7.79-7.82 (m, 1H), 7.65-7.69 (m, 1H), 7.43-7.45 (m,
1H), 7.16-7.20 (m, 1H), 6.56-6.59 (m, 1H), 3.71 (s, 2H), 3.65 (t,
4H), 2.61 (t, 4H), 1.31 (s, 12H).
Step 2: Preparation of
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(4-(pyridin-2-ylmethyl)piperaz-
in-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate)
[1539] In a pressure tube, a mixture of
3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Example 728, Step 5; 50 mg, 0.12 mmol),
1-(pyridin-2-ylmethyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
pyridin-2-yl)piperazine (Step 1; 57 mg, 0.15 mmol),
Pd.sub.2(dba).sub.3.CHCl.sub.3 (6.5 mg, 0.0062 mmol), XPhos (12 mg,
0.025 mmol), K.sub.2CO.sub.3(s) (52 mg, 0.37 mmol) in 4:1
dioxane/water (1.25 mL) was sparged for 5 min with N.sub.2(g), and
subsequently the vessel was sealed. The reaction mixture was
stirred overnight at 90.degree. C. After cooling to room
temperature, the reaction mixture was diluted with 5% MeOH/DCM (20
mL), and washed with water (5 mL). The organic layer was dried over
anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
residue obtained was purified by C18 reverse-phase chromatography
(5-80% ACN/water with 0.1% TFA as the gradient eluent) to afford
the title compound as the bistrifluoroacetate salt (3 mg, 3%
yield). MS(apci) m/z=504.8 (M+H).
Example 732
##STR00942##
[1540]
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(4-(pyrimidin-2-ylmethyl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bi s(2,2,2-trifluoroacetate)
Step 1: Preparation of
2-((4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)pipera-
zin-1-yl)methyl)pyrimidine
[1541] A solution of
1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine
(1.0 g, 3.5 mmol), 2-(chloromethyl)pyrimidine hydrochloride (0.68
g, 4.1 mmol), and Cs.sub.2CO.sub.3 (2.8 g, 8.6 mmol) in DMF (6 mL)
was stirred overnight at ambient temperature, and then at
50.degree. C. until LCMS indicated reaction completion. After
cooling to ambient temperature, the reaction mixture was diluted
with MTBE (20 mL), and extracted sequentially with 1:1 water:
saturated NaHCO.sub.3(aq) (5 mL) and brine (3.times.5 mL). The
organic extracts were dried over anhydrous MgSO.sub.4, filtered,
and concentrated in vacuo. The residue obtained was purified by
silica chromatography (1-25% DCM-MeOH as the gradient eluent) to
afford the title compound (500 mg, 38% yield). .sup.1H NMR (400
MHz, CDCl.sub.3) .delta. 8.76-8.75 (d, 2H), 8.54-8.53 (d, 1H),
7.82-7.79 (dd, 1H), 7.22-7.20 (t, 1H), 6.59-6.57 (d, 1H), 3.88 (s,
2H), 3.71-3.68 (m, 4H), 2.70-2.68 (m, 4H), 1.31 (s, 12H).
Step 2: Preparation of
6-(1-isopropyl-1H-1,2,3-triazol-4-yl)-4-(6-(4-(pyrimidin-2-ylmethyl)piper-
azin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
bis(2,2,2-trifluoroacetate)
[1542] In a pressure tube, a mixture of
3-cyano-6-(1-isopropyl-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Example 728, Step 5; 50 mg, 0.12 mmol),
2-((4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)pipera-
zin-1-yl)methyl)pyrimidine (Step 1; 57 mg, 0.15 mmol),
Pd.sub.2(dba).sub.3.CHCl.sub.3 (6.5 mg, 0.0062 mmol), XPhos (12 mg,
0.025 mmol), and K.sub.2CO.sub.3(s) (52 mg, 0.37 mmol) in 4:1
dioxane/water (1.25 mL) was sparged for 5 min with N.sub.2(g), and
the vessel was sealed. The reaction mixture was stirred overnight
at 100.degree. C. After cooling to room temperature, the reaction
mixture was diluted with 5% MeOH/DCM (20 mL), and washed with water
(5 mL). The organic extracts were dried over anhydrous MgSO.sub.4,
filtered, and concentrated in vacuo. The residue obtained was
purified by C18 reverse-phase chromatography (5-80% ACN/water with
0.1% TFA as the gradient eluent) to afford the title compound as
the bistrifluoroacetate salt (42 mg, 46% yield). MS(apci)
m/z=505.8, 506.8 (M+H).
Example 733
##STR00943##
[1543]
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(6-(4-((6-methoxypyr-
idin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-car-
bonitrile
Step 1: Preparation of
6-bromo-4-(methoxymethoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1544] A solution of
6-bromo-4-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile
(Intermediate P17; 2.0 g, 8.40 mmol) in DMA (33.6 mL) was treated
with K.sub.2CO.sub.3(s) (3.48 g, 25.2 mmol), and stirred for 10 min
at ambient temperature before reducing the temperature to 0.degree.
C. The 0.degree. C. mixture then was treated dropwise with
chloro(methoxy)methane (0.766 mL, 10.1 mmol). After stirring the
resultant mixture for 10 min at 0.degree. C., the mixture was
stirred overnight at ambient temperature. The reaction mixture was
poured into ice water (300 mL) and stirred for 1 h at ambient
temperature. The resulting suspension was filtered, and the
isolated solids were rinse with water and reserved. The filtrate
was extracted with DCM (4.times.50 mL). The combined organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo. The crude product residue was triturated
with ACN/Hexanes. The solid from the trituration was combined with
the reserved solids to afford the title compound (2.34 mg, 99%
yield). .sup.1H NMR (400 MHz, CDCl.sub.3) .delta. 8.36 (d, J=1.17
Hz, 1H), 8.137 (s, 1H), 7.09 (d, J=1.17 Hz, 1H), 5.38 (s, 2H), 3.56
(s, 3H).
Step 2: Preparation of
4-(methoxymethoxy)-6-((trimethylsilvl)ethynyl)pyrazolo[1,5-a]pyridine-3-c-
arbonitrile
[1545] A solution of
6-bromo-4-(methoxymethoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile
(1.22 g, 4.32 mmol), Cu(I)I (0.165 g, 0.865 mmol),
PdCl.sub.2(PPh.sub.3).sub.2 (0.304 g, 0.432 mmol), TEA (1.81 mL,
13.0 mmol), and PPh.sub.3 (56.7 mg, 0.216 mmol) in DMF (17 mL) was
sparged for 5 min with N.sub.2(g). The sparged mixture was treated
with ethynyltrimethylsilane (659 .mu.L, 4.76 mmol), and sparged
again for 5 min with N.sub.2(g). The reaction mixture was stirred
under a N.sub.2(g) atmosphere for 5 h at ambient temperature. The
resulting mixture was poured into water (50 mL) and extracted with
EtOAc (3.times.70 mL). The combined organic extracts were washed
with brine (20 mL), then dried over anhydrous MgSO.sub.4, filtered,
and concentrated in vacuo. The crude product residue was purified
by silica chromatography (1-25% EtOAc/hexanes as the gradient
eluent) to afford the title compound (1.1 g, 85% yield). .sup.1H
NMR (400 MHz, CDCl.sub.3) .delta. 8.34 (d, J=1.17 Hz, 1H), 8.17 (s,
1H), 6.96 (d, J=1.17 Hz, 1H), 5.38 (s, 2H), 3.56 (s, 3H), 0.253 (s,
9H).
Step 3: Preparation of
6-ethynyl-4-(methoxymethoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1546] A solution of
4-(methoxymethoxy)-6-((trimethylsilyl)ethynyl)pyrazolo[1,5-a]pyridine-3-c-
arbonitrile (1.1 g, 3.67 mmol) in MeOH (37 mL) was treated with
powdered K.sub.2CO.sub.3 (0.152 g, 1.10 mmol). The resulting
mixture was stirred overnight at ambient temperature, before
concentrating the mixture in vacuo. The resulting residue was
partitioned between EtOAc (150 mL) and water (30 mL). The organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo. The crude product residue was purified by
silica chromatography (1-40% EtOAc/Hexanes as the gradient eluent)
to afford the title compound (760 mg, 91% yield). .sup.1H NMR (400
MHz, CDCl.sub.3) .delta. 8.37 (d, J=0.78 Hz, 1H), 8.19 (s, 1H),
7.00 (d, J=1.17 Hz, 1H), 5.38 (s, 2H), 3.56 (s, 3H), 3.16 (s,
1H).
Step 4: Preparation of
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(methoxymethoxy)pyrazolo[1-
,5-a]pyridine-3-carbonitrile
[1547] A mixture of 1-bromo-2-methoxyethane (901.6 .mu.L, 9.59
mmol) and sodium azide (623.7 mg, 9.59 mmol) in 1:2 t-BuOH:H.sub.2O
(1.92 mL) was stirred for 2 h at 80.degree. C. After cooling to
ambient temperature, the reaction mixture was treated with
6-ethynyl-4-(methoxymethoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile
(218 mg, 0.96 mmol) and Cu(I)I (18.27 mg, 0.096 mmol). The
resulting reaction mixture was stirred for 1 h at 80.degree. C. The
mixture was cooled to ambient temperature and diluted with water
(50 mL). The resulting suspension was stirred for 30 min at ambient
temperature. The precipitate that formed was collected by
filtration, then rinsed with water (2.times.10 mL), and dried in
vacuo to cleanly afford the title compound (316 mg, 100% yield). MS
(apci) m/z=328.9, 329.9 (M+H).
Step 5: Preparation of
4-hydroxy-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyri-
dine-3-carbonitrile hydrochloride
[1548] A suspension of
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(methoxymethoxy)pyrazolo[1-
,5-a]pyridine-3-carbonitrile (315 mg, 0.959 mmol) in THF (4 mL) was
treated with 4 N HCl.sub.(aq) and stirred overnight at ambient
temperature. The mixture was concentrated in vacuo and the residue
was dried under high vacuum to afford the title compound as the
hydrochloride salt (257 mg, 84% yield). MS (apci) m/z=284.9
(M+H).
Step 6: Preparation of
3-cyano-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl trifluoromethanesulfonate
[1549] An ambient temperature solution of
4-hydroxy-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyri-
dine-3-carbonitrile hydrochloride (Step 5; 255 mg, 0.795 mmol) in
THF (7.46 .mu.L) was treated sequentially with DIEA (831 .mu.L,
4.77 mmol) and
1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)-methanesulfona-
mide (568 mg, 1.59 mmol). The resulting mixture was stirred for 2 h
at ambient temperature. The mixture was poured into water (20 mL),
and extracted with EtOAc (100 mL). The organic extracts were dried
over anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
residue obtained was purified by silica chromatography (1-55%
acetone/DCM as the gradient eluent) to afford the title compound
(380 mg, quantitative yield). .sup.1H NMR (400 MHz, CDCl.sub.3)
.delta. 9.07 (d, J=1.17 Hz, 1H), 8.31 (s, 1H), 7.94 (d, J=1.17 Hz,
1H), 4.62 (m, 2H), 3.79 (m, 2H), 3.39 (s, 3H).
Step 7: Preparation
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(6-(4-((6-methoxypyridin-3-
-yl)methyl)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitr-
ile
[1550] In a pressure tube, a mixture of
3-cyano-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl trifluoromethanesulfonate (50 mg, 0.12 mmol),
1-((6-methoxypyridin-3-yl)methyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazine (Example 697, Step 3; 59 mg,
0.14 mmol), Pd.sub.2(dba).sub.3 (6.2 mg, 0.0060 mmol), XPhos (11
mg, 0.024 mmol), K.sub.2CO.sub.3(s) (50 mg, 0.36 mmol) in 4:1
dioxane/water (1.20 mL) was sparged for 5 min with N.sub.2(g), and
subsequently the vessel was sealed. The reaction mixture was
stirred overnight at 100.degree. C. After cooling to room
temperature, the reaction mixture was diluted with 5% MeOH/DCM (20
mL), and washed with water (5 mL). The organic extracts were dried
over anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
residue was purified by silica chromatography (5-70% acetone/DCM as
the gradient eluent), and the isolated solids were triturated with
MeOH to cleanly afford the title compound (4.5 mg, 7% yield).
MS(apci) m/z=551.2 (M+H).
Example 734
##STR00944##
[1551]
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl-
)-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridine-3-ca-
rbonitrile
Step 1: Preparation of tert-butyl
4-(5-(3-cyano-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]-
pyridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate
[1552] In a pressure tube, a mixture of
3-cyano-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]pyridi-
n-4-yl trifluoromethanesulfonate (Example 733, Step 6; 150 mg,
0.360 mmol), tert-butyl
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine-
-1-carboxylate (154 mg, 0.396 mmol), Pd.sub.2(dba).sub.3.CHCl.sub.3
(18.6 mg, 0.0180 mmol), XPhos (34.4 mg, 0.0721 mmol), and
K.sub.2CO.sub.3(s) (149 mg, 1.08 mmol) were combined in 4:1
dioxane/water (3.60 mL). The mixture was sparged for 5 min with
N.sub.2(g), and the vessel was sealed. The reaction mixture was
stirred overnight at 100.degree. C. After cooling to room
temperature, the reaction mixture was diluted with DCM (20 mL), and
washed with water (5 mL). The organic extracts were dried over
anhydrous MgSO.sub.4, filtered, and concentrated in vacuo. The
residue obtained was purified by silica chromatography (1-40%
acetone/DCM as the gradient eluent), and subsequently the isolated
solids were triturated with MeOH to cleanly afford the title
compound (130 mg, 68% yield). MS(apci) m/z=530.2 (M+H).
Step 2: Preparation of
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-
-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
[1553] A solution of tert-butyl
4-(5-(3-cyano-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[1,5-a]-
pyridin-4-yl)pyridin-2-yl)piperazine-1-carboxylate (128 mg, 0.242
mmol) in TFA (3 mL) was stirred for 1 h at ambient temperature. The
resulting mixture was concentrated in vacuo. The residue obtained
was dissolved in DCM (1 mL) and treated with 4 N HCl in dioxane (3
mL). The resulting suspension was stirred for 5 min at ambient
temperature before concentrating the mixture in vacuo to afford the
title compound (130 mg, quantitative yield). MS (apci) m/z=430.2
(M+H).
Step 3: Preparation of
(R)-4-(6-(4-(2-hydroxy-3-methylbutanoyl)piperazin-1-yl)pyridin-3-yl)-6-(1-
-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolor 1,
[5-a]pyridine-3-carbonitrile
[1554] A solution of
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-
-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride (40
mg, 0.0796 mmol) in DMF (1.6 mL) was treated with
D-alpha-Hydroxyisovaleric acid (11.3 mg, 0.0955 mmol), HATU (36.3
mg, 0.0955 mmol) and DIEA (69.3 l, 0.398 mmol). The resulting
solution was stirred overnight at ambient temperature. The reaction
mixture was diluted with 5% MeOH/DCM (20 mL) and washed with water
(5 mL). The organic extracts were dried over anhydrous MgSO.sub.4,
filtered, and concentrated in vacuo. The crude residue was purified
by silica chromatography (1-55% acetone/DCM as the gradient eluent)
to cleanly afford the title compound (2 mg, 5% yield). MS (apci)
m/z=530.2 (M+H).
Example 735
##STR00945##
[1555]
4-(5-(3-cyano-6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)pyrazolo[-
1,5-a]pyridin-4-yl)pyridin-2-yl)-N-isobutylpiperazine-1-carboxamide
[1556] A solution of
6-(1-(2-methoxyethyl)-1H-1,2,3-triazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-
-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile dihydrochloride
(Example 734, Step 2; 40 mg, 0.0796 mmol) in DCM (2.65 mL) was
treated with TEA (66.6 .mu.L, 0.478 mmol), and stirred for 15 min
at ambient temperature. The reaction mixture was treated with
1-isocyanato-2-methylpropane (9.87 .mu.L, 0.0876 mmol). The
resulting mixture was stirred for 3 h at ambient temperature,
before quenching with water (1 mL). The quenched reaction mixture
was extracted with DCM (3.times.10 mL), and the combined organic
extracts were dried over anhydrous MgSO.sub.4, filtered, and
concentrated in vacuo. The residue was triturated with MeOH (2 mL).
The resulting solids were filtered, washed with additional MeOH (1
mL) and dried in vacuo to cleanly afford the title compound (2 mg,
5% yield). MS (apci) m/z=529.2 (M+H).
Example 736
##STR00946##
[1557]
4-(5-fluoro-6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyri-
din-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitri-
le
Step 1: Preparation of
4-(5,6-difluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile
[1558] A mixture of
3-cyano-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P5; 150 mg, 0.404 mmol),
(5,6-difluoropyridin-3-yl)boronic acid (89.9 mg, 0.566 mmol),
Pd.sub.2(dba).sub.3 (18.5 mg, 0.0202 mmol), XPhos (38.5 mg, 0.0808
mmol), and 2 M Na.sub.2CO.sub.3(aq) (0.505 mL, 1.01 mmol) in
dioxane (2.0 mL) was sparged for 5 min with argon. The vessel was
sealed and the reaction mixture was stirred overnight at 90.degree.
C. After cooling to room temperature, the reaction mixture was
purified directly by silica chromatography (1-10% DCM:MeOH as the
gradient eluent) to cleanly afford the title compound (36 mg, 27%
yield).
Step 2: Preparation of
4-(5-fluoro-6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3--
yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1559] A mixture of
4-(5,6-difluoropyridin-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile (0.036 g, 0.107 mmol),
1-((6-methoxypyridin-3-yl)methyl)piperazine (26.6 mg, 0.128 mmol)
and K.sub.2CO.sub.3 (29.6 mg, 0.214 mmol) in DMSO (1.07 mL) was
stirred overnight at 80.degree. C. After cooling to ambient
temperature, the reaction mixture was partitioned between DCM and
water. The organic extracts were washed sequentially with water and
brine, then dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The crude product residue was purified by
C18 reverse-phase chromatography (5-95% ACN/water with 0.1% TFA as
the gradient eluent) to afford the title compound as the TFA salt.
The TFA salt was dissolved in DCM and extracted with saturated
Na.sub.2CO.sub.3(aq). The organic extracts were washed with brine,
then dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to afford the title compound (29.2 mg, 52%
yield). MS (apci) m/z=524.2 (M+H).
Example 737
##STR00947##
[1560]
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(4-(pyridin-2-ylmethyl)piperazin--
1-yl)pyrimidin-5-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1561] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(2-(piperazin-1-yl)pyrimidin-5-yl)pyrazolo-
[1,5-a]pyridine-3-carbonitrile dihydrochloride (Example 281; 10 mg,
0.022 mmol) in DMA (0.1 mL) was treated sequentially with
picolinaldehyde (3.0 mg, 0.028 mmol), Me.sub.4N(AcO).sub.3BH (8.6
mg, 0.033 mmol) and TEA (9.1 .mu.L, 0.065 mmol). The reaction
mixture was stirred for 20 h at ambient temperature, and then
directly purified by C18 reverse-phase chromatography (0-70%
ACN/water as the gradient eluent) followed by C18 reverse-phase
chromatography (0-70% ACN/water with 0.1% formic acid as the
gradient eluent) to cleanly afford the title compound (1.2 mg, 12%
yield). MS (apci) m/z=477.2 (M+H).
Example 738
##STR00948##
[1562]
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(4-(pyridin-2-ylmethyl)piperazin--
1-yl)phenyl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1563] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (Example 291; 25 mg, 0.055
mmol) in DMA (0.1 mL) was treated sequentially with picolinaldehyde
(7.6 mg, 0.071 mmol), Me.sub.4N(AcO).sub.3BH (22 mg, 0.082 mmol)
and TEA (23 .mu.L, 0.16 mmol). The reaction mixture was stirred for
20 h at ambient temperature, and then directly purified by C18
reverse-phase chromatography (0-70% ACN/water as the gradient
eluent) to afford the title compound (23 mg, 88% yield). MS (apci)
m/z=475.2 (M+H).
Example 739
##STR00949##
[1564]
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(4-(pyrimidin-2-ylmethyl)piperazi-
n-1-yl)phenyl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1565] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (Example 291; 10 mg, 0.022
mmol) in DMA (0.1 mL) was treated sequentially with
pyrimidine-2-carbaldehyde (3.1 mg, 0.028 mmol),
Me.sub.4N(AcO).sub.3BH (8.6 mg, 0.033 mmol) and TEA (9.2 .mu.L,
0.066 mmol). The reaction mixture was stirred for 20 h at ambient
temperature, and then directly purified by C18 reverse-phase
chromatography (0-70% ACN/water as the gradient eluent) to afford
the title compound (6.5 mg, 62% yield). MS (apci) m/z=476.2
(M+H).
Example 740
##STR00950##
[1566]
4-(4-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)phenyl)-6-(1--
methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile
[1567] A solution of
6-(1-methyl-1H-pyrazol-4-yl)-4-(4-(piperazin-1-yl)phenyl)pyrazolo[1,5-a]p-
yridine-3-carbonitrile dihydrochloride (Example 291; 25 mg, 0.055
mmol) in DMA (0.1 mL) was treated sequentially with
6-methoxynicotinaldehyde (3.9 mg, 0.028 mmol),
Me.sub.4N(AcO).sub.3BH (8.6 mg, 0.033 mmol) and TEA (9.2 .mu.L,
0.066 mmol). The reaction mixture was stirred for 20 h at ambient
temperature, and then directly purified by C18 reverse-phase
chromatography (0-65% ACN/water as the gradient eluent) to afford
the title compound (2.3 mg, 21% yield). MS (apci) m/z=505.2
(M+H).
Example 741
##STR00951##
[1568]
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrimidin-2-ylmethyl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine
[1569] A mixture of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(piperazin-1-yl)pyridin-3-yl)p-
yrazolo[1,5-a]pyridine (Example 644; 49.9 mg, 0.127 mmol) in 1:1
DCM:MeOH (1.2 mL) was treated with DIEA (29 .mu.L, 0.16 mmol).
After stirring for 5 min, the mixture was treated sequentially with
2-pyrimidinecarboxaldehyde (27.4 mg, 0.253 mmol), NaBH(AcO).sub.3
(53.7 mg, 0.253 mmol) and a couple of drops of AcOH. The resulting
mixture was stirred at ambient temperature for 5 d, introducing
additional reagents, 2-pyrimidinecarboxaldehyde (27 mg),
NaBH(AcO).sub.3 (54 mg) and AcOH (2 drops), 3 times at 24 h
intervals during the first 3 days of the time course. Upon
completion, as determined by LCMS, the reaction mixture was diluted
with DCM, and washed with saturated NaHCO.sub.3(aq). The organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo. The residue was purified by C18
reverse-phase chromatography (5-95% ACN/water with 0.1% TFA as the
gradient eluent) to afford the title compound as the TFA salt. The
salt was dissolved in 4:1 DCM:iPrOH, and extracted with saturated
NaHCO.sub.3(aq). The organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to cleanly
afford the title compound (41.9 mg, 68% yield). MS (apci)
m/z=486.2, 487.2 (M+H).
Example 742
##STR00952##
[1570]
3-chloro-4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyri-
din-3-yl)-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[1571] In a pressure vessel, a solution of
3-chloro-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (52.7 mg, 0.138 mmol) (Intermediate P8;
52.7 mg, 0.138 mmol) in 4:1 dioxane:water (1.4 mL) was treated with
1-((6-methoxypyridin-3-yl)methyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazine (Example 697, Step 3; 62.5 mg,
0.152 mmol), Pd.sub.2(dba).sub.3 (6.3 mg, 0.0069 mmol), XPhos (13.2
mg, 0.028 mmol), and K.sub.2CO.sub.3(aq) (57.4 mg, 0.415 mmol).
After sparging the mixture with Ar.sub.(g), the vessel was sealed.
The reaction mixture was stirred for 16 h at 90.degree. C. After
cooling to ambient temperature, the mixture was diluted 4:1
DCM:iPrOH, and washed with water. The organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The residue was purified by C18 reverse-phase chromatography
(5-95% ACN/water with 0.1% TFA as the gradient eluent) to afford
the title compound as the TFA salt. The salt was diluted with 4:1
DCM:iPrOH, and treated with saturated NaHCO.sub.3(aq). The organic
extracts were dried over anhydrous Na.sub.2SO.sub.4, filtered, and
concentrated in vacuo to cleanly afford the title compound (49 mg,
69% yield). MS (apci) m/z=515.2, 516.2 (M+H).
Example 743
##STR00953##
[1572]
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)-4-(6-(4-(pyrimidin-2-ylmethyl-
)piperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine
[1573] A solution of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P27; 52.0 mg, 0.144 mmol)
in 4:1 dioxane:water (1.4 mL) was treated with
2-((4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)pipera-
zin-1-yl)methyl)pyrimidine (Example 732, Step 1; 60.5 mg, 0.159
mmol), Pd.sub.2(dba).sub.3 (6.6 mg, 0.0069 mmol), XPhos (13.8 mg,
0.029 mmol), and Na.sub.2CO.sub.3(s) (45.9 mg, 0.433 mmol). After
sparging the mixture with Ar.sub.(g), the reaction vessel was
sealed. The reaction mixture was stirred for 16 h at 100.degree. C.
After cooling to ambient temperature, the mixture was diluted 4:1
DCM:iPrOH, and washed with water. The organic extracts were dried
over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated in
vacuo. The residue was purified by C18 reverse-phase chromatography
(5-95% ACN/water with 0.1% TFA as the gradient eluent) to afford
the title compound as the TFA salt. The salt was dissolved in 4:1
DCM:iPrOH, and extracted with saturated NaHCO.sub.3(aq). The
organic extracts were dried over anhydrous Na.sub.2SO.sub.4,
filtered, and concentrated in vacuo to cleanly afford the title
compound (36.9 mg, 59% yield). MS (apci) m/z=466.2 (M+H).
Example 744
##STR00954##
[1574]
4-(6-(4-((6-methoxypyridin-3-yl)methyl)piperazin-1-yl)pyridin-3-yl)-
-3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridine
[1575] A solution of
3-methyl-6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-4-yl
trifluoromethanesulfonate (Intermediate P27; 50.1 mg, 0.139 mmol)
in 4:1 dioxane:water (1.4 mL) was treated with
1-((6-methoxypyridin-3-yl)methyl)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxabo-
rolan-2-yl)pyridin-2-yl)piperazine (Example 697, Step 3; 62.8 mg,
0.153 mmol), Pd.sub.2(dba).sub.3 (6.4 mg, 0.0070 mmol), XPhos (13.3
mg, 0.028 mmol), and Na.sub.2CO.sub.3(s) (44.2 mg, 0.417 mmol).
After sparging the mixture with Ar.sub.(g), the reaction vessel was
sealed. The reaction mixture was stirred for 16 h at 100.degree. C.
After cooling to ambient temperature, the mixture was diluted with
4:1 DCM:iPrOH, and washed with water The organic extracts were
dried over anhydrous Na.sub.2SO.sub.4, filtered, and concentrated
in vacuo. The residue was purified by C18 reverse-phase
chromatography (5-95% ACN/water with 0.1% TFA as the gradient
eluent) to afford the title compound as the TFA salt. The salt then
was diluted with 4:1 DCM:iPrOH, and treated with saturated
NaHCO.sub.3(aq). The organic extracts were dried over anhydrous
Na.sub.2SO.sub.4, filtered, and concentrated in vacuo to cleanly
afford the title compound (43.6 mg, 63% yield). MS (apci) m/z=495.2
(M+H).
Abbreviations
TABLE-US-00068 [1576] ACN Acetonitrile AcOH Acetic Acid
Boc-anhydride di-tert-butyl dicarbonate n-BuLi n-butyllithium or
1-butyllithium s-BuOH Sec-Butanol or 2-Butanol t-BuOH tert-Butanol
or 2-Methylpropan-2-ol CuI Copper (I) Iodide d day, days DCE
1,2-Dichloroethane DCM Dichloromethane DIEA
N,N-Diisopropylethylamine DMA N,N-Dimethylacetamide DMAP
4-Dimethylaminopyridine DME 1,2-Dimethoxyethane DMF
N,N-Dimethylformamide DMSO Dimethylsulfoxide EDC-HCl
1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride eq
equivalent Et.sub.2O Diethyl Ether EtOAc Ethyl Acetate EtOH Ethanol
GF/F paper GF/F glass microfiber filter paper h hour, hours HATU
1-[Bis(dimethylamino)methylene]-1H-1,2,3- triazolo[4,5-b]pyridinium
3-oxide hexafluorophosphate or 2-(7-Aza-1H-
benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate
HBTU 3-[Bis(dimethylamino)methyliumyl]-3H- benzotriazol-1-oxide
hexafluorophosphate or 2-(1H-benzotriazole-1-yl)-1,1,3,3-
tetramethyluronium hexafluorophosphate iPrOH Isopropanol KOAc
Potassium Acetate K.sub.2HPO.sub.4 Potassium Phosphate, Dibasic
LCMS Liquid chromatography-mass spectrometry Me.sub.4N(AcO).sub.3BH
Tetramethylammonium Triacetoxyborohydride NaBH(AcO).sub.3 Sodium
Triacetoxyborohydride MeOH Methanol min minute, minutes MSH
o-(mesitylsulfonyl)hydroxylamine MTBE Methyl tert-Butyl Ether NBS
N-Bromosuccinimide NCS N-Chlorosuccinimide NIS N-Iodosuccinimide
10% Pd/C Palladium 10 wt. % (dry basis), active carbon, wet,
Degussa Pd(PPh.sub.3).sub.4 Tetrakis(triphenylphosphine)palladium
(0) Pd.sub.2(dba).sub.3 tris(dibenzylideneacetone)dipalladium (0)
PdCl.sub.2(dppf).cndot.CH.sub.2Cl.sub.2
1,1'-Bis(diphenylphosphino)ferrocene- palladium(II)dichloride
dichloromethane complex PdCl.sub.2(PPh.sub.3).sub.2
Palladium(II)bis(triphenylphosphine) dichloride, PPTS Pyridinium
p-toluenesulfonate PS frit Biotage .RTM. "Isolute Phase Separators"
PS paper Whatman .RTM. silicone treated Phase Separators filter
paper PVDF (0.45 .mu.m) disc polyvinylidene difluoride membrane
with a 0.45- micron pore size rt Room temperature TBAF
Tetra-n-butylammonium fluoride TEA Triethylamine TFA
Trifluoroacetic acid THF tetrahydrofuran TsCl 4-Toluenesulfonyl
chloride Triphosgene (bis(trichloromethyl) carbonate X-phos
dicyclohexyl(2',4',6'-triisopropyl-[1,1'-biphenyl]- 2-yl)phosphine
Sequence CWU 1
1
111114PRTHomo sapiens 1Met Ala Lys Ala Thr Ser Gly Ala Ala Gly Leu
Arg Leu Leu Leu Leu1 5 10 15Leu Leu Leu Pro Leu Leu Gly Lys Val Ala
Leu Gly Leu Tyr Phe Ser 20 25 30Arg Asp Ala Tyr Trp Glu Lys Leu Tyr
Val Asp Gln Ala Ala Gly Thr 35 40 45Pro Leu Leu Tyr Val His Ala Leu
Arg Asp Ala Pro Glu Glu Val Pro 50 55 60Ser Phe Arg Leu Gly Gln His
Leu Tyr Gly Thr Tyr Arg Thr Arg Leu65 70 75 80His Glu Asn Asn Trp
Ile Cys Ile Gln Glu Asp Thr Gly Leu Leu Tyr 85 90 95Leu Asn Arg Ser
Leu Asp His Ser Ser Trp Glu Lys Leu Ser Val Arg 100 105 110Asn Arg
Gly Phe Pro Leu Leu Thr Val Tyr Leu Lys Val Phe Leu Ser 115 120
125Pro Thr Ser Leu Arg Glu Gly Glu Cys Gln Trp Pro Gly Cys Ala Arg
130 135 140Val Tyr Phe Ser Phe Phe Asn Thr Ser Phe Pro Ala Cys Ser
Ser Leu145 150 155 160Lys Pro Arg Glu Leu Cys Phe Pro Glu Thr Arg
Pro Ser Phe Arg Ile 165 170 175Arg Glu Asn Arg Pro Pro Gly Thr Phe
His Gln Phe Arg Leu Leu Pro 180 185 190Val Gln Phe Leu Cys Pro Asn
Ile Ser Val Ala Tyr Arg Leu Leu Glu 195 200 205Gly Glu Gly Leu Pro
Phe Arg Cys Ala Pro Asp Ser Leu Glu Val Ser 210 215 220Thr Arg Trp
Ala Leu Asp Arg Glu Gln Arg Glu Lys Tyr Glu Leu Val225 230 235
240Ala Val Cys Thr Val His Ala Gly Ala Arg Glu Glu Val Val Met Val
245 250 255Pro Phe Pro Val Thr Val Tyr Asp Glu Asp Asp Ser Ala Pro
Thr Phe 260 265 270Pro Ala Gly Val Asp Thr Ala Ser Ala Val Val Glu
Phe Lys Arg Lys 275 280 285Glu Asp Thr Val Val Ala Thr Leu Arg Val
Phe Asp Ala Asp Val Val 290 295 300Pro Ala Ser Gly Glu Leu Val Arg
Arg Tyr Thr Ser Thr Leu Leu Pro305 310 315 320Gly Asp Thr Trp Ala
Gln Gln Thr Phe Arg Val Glu His Trp Pro Asn 325 330 335Glu Thr Ser
Val Gln Ala Asn Gly Ser Phe Val Arg Ala Thr Val His 340 345 350Asp
Tyr Arg Leu Val Leu Asn Arg Asn Leu Ser Ile Ser Glu Asn Arg 355 360
365Thr Met Gln Leu Ala Val Leu Val Asn Asp Ser Asp Phe Gln Gly Pro
370 375 380Gly Ala Gly Val Leu Leu Leu His Phe Asn Val Ser Val Leu
Pro Val385 390 395 400Ser Leu His Leu Pro Ser Thr Tyr Ser Leu Ser
Val Ser Arg Arg Ala 405 410 415Arg Arg Phe Ala Gln Ile Gly Lys Val
Cys Val Glu Asn Cys Gln Ala 420 425 430Phe Ser Gly Ile Asn Val Gln
Tyr Lys Leu His Ser Ser Gly Ala Asn 435 440 445Cys Ser Thr Leu Gly
Val Val Thr Ser Ala Glu Asp Thr Ser Gly Ile 450 455 460Leu Phe Val
Asn Asp Thr Lys Ala Leu Arg Arg Pro Lys Cys Ala Glu465 470 475
480Leu His Tyr Met Val Val Ala Thr Asp Gln Gln Thr Ser Arg Gln Ala
485 490 495Gln Ala Gln Leu Leu Val Thr Val Glu Gly Ser Tyr Val Ala
Glu Glu 500 505 510Ala Gly Cys Pro Leu Ser Cys Ala Val Ser Lys Arg
Arg Leu Glu Cys 515 520 525Glu Glu Cys Gly Gly Leu Gly Ser Pro Thr
Gly Arg Cys Glu Trp Arg 530 535 540Gln Gly Asp Gly Lys Gly Ile Thr
Arg Asn Phe Ser Thr Cys Ser Pro545 550 555 560Ser Thr Lys Thr Cys
Pro Asp Gly His Cys Asp Val Val Glu Thr Gln 565 570 575Asp Ile Asn
Ile Cys Pro Gln Asp Cys Leu Arg Gly Ser Ile Val Gly 580 585 590Gly
His Glu Pro Gly Glu Pro Arg Gly Ile Lys Ala Gly Tyr Gly Thr 595 600
605Cys Asn Cys Phe Pro Glu Glu Glu Lys Cys Phe Cys Glu Pro Glu Asp
610 615 620Ile Gln Asp Pro Leu Cys Asp Glu Leu Cys Arg Thr Val Ile
Ala Ala625 630 635 640Ala Val Leu Phe Ser Phe Ile Val Ser Val Leu
Leu Ser Ala Phe Cys 645 650 655Ile His Cys Tyr His Lys Phe Ala His
Lys Pro Pro Ile Ser Ser Ala 660 665 670Glu Met Thr Phe Arg Arg Pro
Ala Gln Ala Phe Pro Val Ser Tyr Ser 675 680 685Ser Ser Gly Ala Arg
Arg Pro Ser Leu Asp Ser Met Glu Asn Gln Val 690 695 700Ser Val Asp
Ala Phe Lys Ile Leu Glu Asp Pro Lys Trp Glu Phe Pro705 710 715
720Arg Lys Asn Leu Val Leu Gly Lys Thr Leu Gly Glu Gly Glu Phe Gly
725 730 735Lys Val Val Lys Ala Thr Ala Phe His Leu Lys Gly Arg Ala
Gly Tyr 740 745 750Thr Thr Val Ala Val Lys Met Leu Lys Glu Asn Ala
Ser Pro Ser Glu 755 760 765Leu Arg Asp Leu Leu Ser Glu Phe Asn Val
Leu Lys Gln Val Asn His 770 775 780Pro His Val Ile Lys Leu Tyr Gly
Ala Cys Ser Gln Asp Gly Pro Leu785 790 795 800Leu Leu Ile Val Glu
Tyr Ala Lys Tyr Gly Ser Leu Arg Gly Phe Leu 805 810 815Arg Glu Ser
Arg Lys Val Gly Pro Gly Tyr Leu Gly Ser Gly Gly Ser 820 825 830Arg
Asn Ser Ser Ser Leu Asp His Pro Asp Glu Arg Ala Leu Thr Met 835 840
845Gly Asp Leu Ile Ser Phe Ala Trp Gln Ile Ser Gln Gly Met Gln Tyr
850 855 860Leu Ala Glu Met Lys Leu Val His Arg Asp Leu Ala Ala Arg
Asn Ile865 870 875 880Leu Val Ala Glu Gly Arg Lys Met Lys Ile Ser
Asp Phe Gly Leu Ser 885 890 895Arg Asp Val Tyr Glu Glu Asp Ser Tyr
Val Lys Arg Ser Gln Gly Arg 900 905 910Ile Pro Val Lys Trp Met Ala
Ile Glu Ser Leu Phe Asp His Ile Tyr 915 920 925Thr Thr Gln Ser Asp
Val Trp Ser Phe Gly Val Leu Leu Trp Glu Ile 930 935 940Val Thr Leu
Gly Gly Asn Pro Tyr Pro Gly Ile Pro Pro Glu Arg Leu945 950 955
960Phe Asn Leu Leu Lys Thr Gly His Arg Met Glu Arg Pro Asp Asn Cys
965 970 975Ser Glu Glu Met Tyr Arg Leu Met Leu Gln Cys Trp Lys Gln
Glu Pro 980 985 990Asp Lys Arg Pro Val Phe Ala Asp Ile Ser Lys Asp
Leu Glu Lys Met 995 1000 1005Met Val Lys Arg Arg Asp Tyr Leu Asp
Leu Ala Ala Ser Thr Pro 1010 1015 1020Ser Asp Ser Leu Ile Tyr Asp
Asp Gly Leu Ser Glu Glu Glu Thr 1025 1030 1035Pro Leu Val Asp Cys
Asn Asn Ala Pro Leu Pro Arg Ala Leu Pro 1040 1045 1050Ser Thr Trp
Ile Glu Asn Lys Leu Tyr Gly Met Ser Asp Pro Asn 1055 1060 1065Trp
Pro Gly Glu Ser Pro Val Pro Leu Thr Arg Ala Asp Gly Thr 1070 1075
1080Asn Thr Gly Phe Pro Arg Tyr Pro Asn Asp Ser Val Tyr Ala Asn
1085 1090 1095Trp Met Leu Ser Pro Ser Ala Ala Lys Leu Met Asp Thr
Phe Asp 1100 1105 1110Ser
* * * * *