U.S. patent application number 15/144422 was filed with the patent office on 2016-08-25 for pyrazolopyrimidine jak inhibitor compounds and methods.
This patent application is currently assigned to Genentech, Inc.. The applicant listed for this patent is Genentech, Inc.. Invention is credited to Jeffrey BLANEY, Paul A. GIBBONS, Emily HANAN, Joseph P. LYSSIKATOS, Steven R. MAGNUSON, Richard PASTOR, Thomas E. RAWSON, Aihe ZHOU, Bing-Yan ZHU.
Application Number | 20160244456 15/144422 |
Document ID | / |
Family ID | 42129330 |
Filed Date | 2016-08-25 |
United States Patent
Application |
20160244456 |
Kind Code |
A1 |
BLANEY; Jeffrey ; et
al. |
August 25, 2016 |
PYRAZOLOPYRIMIDINE JAK INHIBITOR COMPOUNDS AND METHODS
Abstract
The invention provides JAK kinase inhibitors of Formula Ia,
enantiomers, diasteriomers or pharmaceutically acceptable salts
thereof, wherein R.sup.1, R.sup.2, R.sup.7 and Z are defined
herein, a pharmaceutical composition that includes a compound of
Formula Ia and a pharmaceutically acceptable carrier, adjuvant or
vehicle, and methods of treating or lessening the severity of a
disease or condition responsive to the inhibition of a JAK kinase
activity in a patient. ##STR00001##
Inventors: |
BLANEY; Jeffrey; (Piedmont,
CA) ; GIBBONS; Paul A.; (San Francisco, CA) ;
HANAN; Emily; (Redwood City, CA) ; LYSSIKATOS; Joseph
P.; (Piedmont, CA) ; MAGNUSON; Steven R.;
(Dublin, CA) ; PASTOR; Richard; (South San
Francisco, CA) ; RAWSON; Thomas E.; (Mountain VIew,
CA) ; ZHOU; Aihe; (San Jose, CA) ; ZHU;
Bing-Yan; (Palo Alto, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Genentech, Inc. |
South San Francisco |
CA |
US |
|
|
Assignee: |
Genentech, Inc.
South San Francisco
CA
|
Family ID: |
42129330 |
Appl. No.: |
15/144422 |
Filed: |
May 2, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
14134150 |
Dec 19, 2013 |
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15144422 |
|
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|
13099179 |
May 2, 2011 |
8637526 |
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14134150 |
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PCT/US2009/063014 |
Nov 2, 2009 |
|
|
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13099179 |
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61110497 |
Oct 31, 2008 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61P 17/00 20180101;
A61P 19/00 20180101; A61P 37/06 20180101; A61P 35/02 20180101; A61P
25/00 20180101; A61P 29/00 20180101; A61P 37/00 20180101; A61P 3/10
20180101; A61P 17/06 20180101; A61P 7/02 20180101; A61P 5/00
20180101; A61P 9/00 20180101; A61P 31/12 20180101; C07D 487/04
20130101; A61P 35/00 20180101; A61P 31/00 20180101; A61P 43/00
20180101; A61P 1/16 20180101; A61P 37/02 20180101; A61P 11/06
20180101; A61P 25/28 20180101; A61P 9/10 20180101; A61P 37/08
20180101 |
International
Class: |
C07D 487/04 20060101
C07D487/04 |
Claims
1. A compound of Formula Ia: ##STR00549## enantiomers,
diastereomers or pharmaceutically acceptable salts thereof,
wherein: R.sup.1 is H; R.sup.2 is --OR.sup.4, --NR.sup.3R.sup.4,
--NR.sup.3NR.sup.12R.sup.4, --NR.sup.3S(O)R.sup.4 or
--NR.sup.3S(O).sub.2R.sup.4; R.sup.3 is H or C.sub.1-C.sub.6 alkyl,
C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6 alkynyl, wherein said
alkyl, alkenyl and alkynyl are optionally substituted by oxo, F,
OR.sup.a or NR.sup.aR.sup.b; R.sup.4 is H, C.sub.1-C.sub.6 alkyl,
C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6 alkynyl,
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.10 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by R.sup.8,
and said aryl, cycloalkyl, heteroaryl and heterocyclyl are
optionally substituted by R.sup.9; or R.sup.3 and R.sup.4 are taken
together with the nitrogen to which they are attached to form a
C.sub.1-C.sub.9 heterocyclyl optionally substituted by R.sup.13; Z
is --OR.sup.6 or --NR.sup.5R.sup.6; R.sup.5 is H or C.sub.1-C.sub.3
alkyl; R.sup.6 is H, C.sub.1-C.sub.10 alkyl, C.sub.2-C.sub.10
alkenyl, C.sub.2-C.sub.10 alkynyl, --(C.sub.0-C.sub.5
alkyl)(C.sub.1-C.sub.9 heterocyclyl), --(C.sub.0-C.sub.5
alkyl)(C.sub.3-C.sub.8 cycloalkyl), --(C.sub.0-C.sub.5
alkyl)(C.sub.1-C.sub.9 heteroaryl), --(C.sub.0-C.sub.5
alkyl)(C.sub.6-C.sub.9 aryl), wherein said alkyl, alkenyl and
alkynyl are optionally substituted by R.sup.10, and said aryl,
cycloalkyl, heteroaryl and heterocyclyl are optionally substituted
by R.sup.1; R.sup.7 is H, halo, C.sub.1-C.sub.3 alkyl,
C.sub.2-C.sub.3 alkenyl, C.sub.2-C.sub.3 alkynyl or
--O(C.sub.1-C.sub.3 alkyl); R.sup.8 is independently oxo, halo,
OR.sup.a or NR.sup.aR.sup.b; R.sup.9 is independently oxo, --CN,
--CF.sub.3, halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a, --(C.sub.0-C.sub.5
alkyl)SR.sup.a, --O[C(R.sup.a).sub.2].sub.1-3O--, C.sub.1-C.sub.3
alkyl optionally substituted by oxo or F, --(C.sub.0-C.sub.5
alkyl)(C.sub.3-C.sub.6 cycloalkyl) optionally substituted by oxo or
F, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)C.sub.6 aryl
optionally substituted by halo or C.sub.1-C.sub.3 alkyl
--O(C.sub.1-C.sub.3 alkyl), or --(C.sub.0-C.sub.5
alkyl)C.sub.1-C.sub.9 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl; R.sup.10 is independently oxo, halo,
OR.sup.a or NR.sup.aR.sup.b; R.sup.11 is independently oxo, --CN,
--CF.sub.3, halo, --O[C(R.sup.a).sub.2].sub.1-3O--,
--C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)OR.sup.a, C.sub.1-C.sub.6 alkyl optionally substituted by oxo
or F, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heterocyclyl
optionally substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heteroaryl optionally substituted by halo or C.sub.1-C.sub.3 alkyl,
--(C.sub.0-C.sub.5 alkyl)phenyl optionally substituted by
C.sub.1-C.sub.4 alkyl, C.sub.1-C.sub.4 alkenyl, C.sub.1-C.sub.4
alkynyl, C.sub.3-C.sub.6 cycloalkyl, --CF.sub.3, halo, --CN,
--OR.sup.a or --NR.sup.aR.sup.b, or --(C.sub.0-C.sub.5
alkyl)C.sub.3-C.sub.6 cycloalkyl optionally substituted by oxo,
--NR.sup.cR.sup.d, C.sub.1-C.sub.3 alkyl or F; R.sup.12 is H or
C.sub.1-C.sub.3 alkyl; R.sup.13 is oxo, halo, C.sub.1-C.sub.3
alkyl, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, C.sub.6 aryl,
C.sub.3-C.sub.6 cycloalkyl, C.sub.1-C.sub.5 heteroaryl or
C.sub.4-C.sub.5 heterocyclyl; wherein said aryl, cycloalkyl,
heteroaryl and heterocyclyl are optionally substituted by
C.sub.1-C.sub.4 alkyl, --(C.sub.0-C.sub.3 alkyl)OR.sup.c, oxo, halo
or NR.sup.cR.sup.d; R.sup.a and R.sup.b are independently H,
--CF.sub.3, --CHF.sub.2, --CH.sub.2F, C.sub.1-C.sub.6 alkyl,
C.sub.6 aryl, C.sub.3-C.sub.6 cycloalkyl or C.sub.4-C.sub.5
heterocyclyl; wherein said alkyl, aryl and cycloalkyl are
optionally substituted by C.sub.1-C.sub.4 alkyl, --(C.sub.0-C.sub.3
alkyl)OR.sup.c, oxo, halo, NR.sup.cR.sup.d or C.sub.4-C.sub.5
heterocyclyl; or R.sup.a and R.sup.b together with the atom to
which they are attached form a C.sub.1-C.sub.5 heterocyclyl
optionally substituted by oxo, F, C.sub.1-C.sub.3 alkyl,
--C(O)C.sub.1-C.sub.6 alkyl or --C(O)OR.sup.a; and R.sup.c and
R.sup.d are independently H, C.sub.1-C.sub.3 alkyl, C.sub.3-C.sub.6
cycloalkyl or phenyl, wherein said alkyl, cycloalkyl and phenyl are
optionally substituted by halo, CH.sub.3OH, NH.sub.2,
C(O)O(C.sub.1-C.sub.6 alkyl) or C(O)NH(C.sub.1-C.sub.6 alkyl).
2. A compound of claim 1, selected from Formula I: ##STR00550##
enantiomers, diastereomers or pharmaceutically acceptable salts
thereof, wherein: R.sup.1 is H; R.sup.2 is --OR.sup.4 or
--NR.sup.3R.sup.4; R.sup.3 is H or C.sub.1-C.sub.6 alkyl,
C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6 alkynyl, wherein said
alkyl, alkenyl and alkynyl are optionally substituted by oxo, F,
OR.sup.a or NR.sup.aR.sup.b; R.sup.4 is H, C.sub.1-C.sub.6 alkyl,
C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6 alkynyl,
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by oxo, F,
OR.sup.a or NR.sup.aR.sup.b, and said aryl, cycloalkyl, heteroaryl
and heterocyclyl are optionally substituted by oxo, --CN,
--CF.sub.3, halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a,
--O[C(R.sup.a).sub.2].sub.1-3O--C.sub.1-C.sub.3 alkyl optionally
substituted by oxo or F, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heterocyclyl optionally substituted by halo, oxo, C.sub.1-C.sub.3
alkyl or C(O)C.sub.1-C.sub.3 alkyl, or --(C.sub.0-C.sub.5
alkyl)C.sub.1-C.sub.9 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl; or R.sup.3 and R.sup.4 are taken together
with the nitrogen to which they are attached to form a
C.sub.1-C.sub.5 heterocyclyl optionally substituted by oxo, F,
C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6 alkyl or
--C(O)OR.sup.a; Z is --OR.sup.6 or --NR.sup.5R.sup.6; R.sup.5 is H
or C.sub.1-C.sub.3 alkyl; R.sup.6 is H, C.sub.1-C.sub.10alkyl,
C.sub.2-C.sub.10 alkenyl, C.sub.2-C.sub.10 alkynyl,
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.8 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by oxo, F,
OR.sup.a or NR.sup.aR.sup.b, and said aryl, cycloalkyl, heteroaryl
and heterocyclyl are optionally substituted by oxo, --CN,
--CF.sub.3, halo, --O[C(R.sup.a).sub.2].sub.1-3O--,
--C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)OR.sup.a, C.sub.1-C.sub.6 alkyl optionally substituted by oxo
or F, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heterocyclyl
optionally substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heteroaryl optionally substituted by halo or C.sub.1-C.sub.3 alkyl,
--(C.sub.0-C.sub.5 alkyl)phenyl optionally substituted by
C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo, --CN, --OR.sup.a or
--NR.sup.aR.sup.b, or --(C.sub.0-C.sub.5 alkyl)C.sub.3-C.sub.6
cycloalkyl optionally substituted by oxo, --NR.sup.cR.sup.d,
C.sub.1-C.sub.3 alkyl or F; R.sup.a and R.sup.b are independently
H, --CF.sub.3, --CHF.sub.2, --CH.sub.2F, C.sub.1-C.sub.6 alkyl,
C.sub.6 aryl, C.sub.3-C.sub.6 cycloalkyl or C.sub.4-C.sub.5
heterocyclyl; wherein said alkyl, aryl and cycloalkyl are
optionally substituted by C.sub.1-C.sub.4 alkyl, --(C.sub.0-C.sub.3
alkyl)OR.sup.c, oxo, halo, NR.sup.cR.sup.d or C.sub.4-C.sub.5
heterocyclyl; or R.sup.a and R.sup.b together with the atom to
which they are attached form a C.sub.1-C.sub.5 heterocyclyl
optionally substituted by oxo, F, C.sub.1-C.sub.3 alkyl,
--C(O)C.sub.1-C.sub.6 alkyl or --C(O)OR.sup.a; and R.sup.c and
R.sup.d are independently H, C.sub.1-C.sub.3 alkyl, C.sub.3-C.sub.6
cycloalkyl or phenyl, wherein said alkyl, cycloalkyl and phenyl are
optionally substituted by halo, CH.sub.3OH, NH.sub.2,
C(O)O(C.sub.1-C.sub.6 alkyl) or C(O)NH(C.sub.1-C.sub.6 alkyl).
3. The compound of claim 1, wherein R.sup.2 is --NHR.sup.4.
4. The compound of claim 3, wherein R.sup.2 is --NH.sub.2.
5. The compound of claim 3, wherein R.sup.4 is C.sub.1-C.sub.6
alkyl, --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.10 aryl), wherein said
alkyl is optionally substituted by R.sup.8, and said aryl,
cycloalkyl, heteroaryl and heterocyclyl are optionally substituted
by R.sup.9.
6. The compound of claim 1, wherein R.sup.3 and R.sup.4 are taken
together with the nitrogen to which they are attached to form a
C.sub.1-C.sub.9 heterocyclyl optionally substituted by
R.sup.13.
7. The compound of claim 1, wherein R.sup.2 is
--NHS(O).sub.2R.sup.4.
8. The compound of claim 7, wherein R.sup.4 is --(C.sub.6-C.sub.10
aryl) optionally substituted by R.sup.9.
9. The compound of claim 1, wherein Z is --NHR.sup.6.
10. The compound of claim 1, wherein R.sup.6 is C.sub.1-C.sub.10
alkyl, --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.8 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein said alkyl
is optionally substituted by R.sup.10, and said aryl, cycloalkyl,
heteroaryl and heterocyclyl are optionally substituted by
R.sup.11.
11. The compound of claim 1, wherein R.sup.7 is H; R.sup.2 is
--NR.sup.3S(O).sub.2R.sup.4; R.sup.3 is H; and R.sup.4 is phenyl
optionally substituted by 1-3 substituents selected from
C.sub.1-C.sub.3 alkyl, --CF.sub.3 and halo; Z is --NR.sup.5R.sup.6;
R.sup.5 is H; and R.sup.6 is cyclopropyl, cyclobutyl, cyclopentyl,
cyclohexyl, cycloheptyl or cyclooctyl, and wherein R.sup.6 is
optionally substituted by 1 to 3 substituents selected from oxo,
halo and C.sub.1-C.sub.6 alkyl.
12. The compound of claim 1, wherein R.sup.7 is H; R.sup.2 is
--NR.sup.3R.sup.4; R.sup.3 is H; R.sup.5 is H; R.sup.6 is pyrazolyl
substituted by phenyl and further optionally substituted by methyl,
and wherein said phenyl is optionally substituted by one or two
substituents selected from methyl, halo, methoxy, cyano,
trifluoromethyl, hydroxy and trifluoromethoxy.
13. A pharmaceutical composition comprising a compound of claim 1
and a pharmaceutically acceptable carrier, adjuvant or vehicle.
14. A method of treating or lessening the severity of a disease or
condition responsive to the inhibition of a JAK kinase activity in
a patient, comprising administering to said patient a
therapeutically effective amount of a compound of claim 1.
15. The method of claim 14, wherein said disease is and
immunological disorder.
16. The method of claim 15, wherein said disease is asthma,
rheumatoid arthritis, psoriasis, contact dermatitis, delayed
hypersensitivity reactions, lupus or multiple sclerosis.
17. A method of manufacturing a compound of claim 1, comprising
contacting a compound of formula i: ##STR00551## wherein R is
independently halogen, with a compound of formula NHR.sup.3R.sup.4,
under conditions sufficient to form the compound of claim 1.
18. The method of claim 15, wherein R is Cl.
19. The compound of claim 1, wherein R.sup.4 is phenyl,
--(CH.sub.2)phenyl, --(CH.sub.2CH.sub.2)phenyl,
--CH(CH.sub.3)phenyl, --CH(CH.sub.2CH.sub.3)phenyl,
--(R)--CH(CH.sub.3)phenyl, --(S)--CH(CH.sub.3)phenyl,
--(R)--CH(CH.sub.2CH.sub.3)phenyl,
--(S)--CH(CH.sub.2CH.sub.3)phenyl or --C(CH.sub.3).sub.2phenyl,
wherein said phenyl is optionally substituted by R.sup.9.
20. The compound of claim 1, wherein R.sup.9 is independently
selected from methyl, ethyl, i-propyl, cyclopropyl, F, Cl,
--OCH.sub.2O--, --OCH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2CH.sub.2O--, --OCH.sub.2CH.sub.2NH.sub.2,
--OCH.sub.2CH.sub.2NMe.sub.2, --O(CH.sub.2).sub.1-3(C.sub.4-C.sub.5
heterocyclyl), C.sub.3-C.sub.5 heteroaryl,
--(CH.sub.2).sub.0-3C.sub.3-C.sub.5 heterocyclyl optionally
substituted by C.sub.1-C.sub.3 alkyl or halo, --OH, --OCH.sub.3,
--OCH.sub.2CH.sub.3, --SH, --SCH.sub.3, --SCH.sub.2CH.sub.3,
--N(CH.sub.3).sub.2--N(CH.sub.2CH.sub.3).sub.2, --CN, --CF.sub.3,
--OCF.sub.3, --OCHF.sub.2 and C(O)O(C.sub.1-C.sub.3 alkyl).
21. The compound of claim 1, wherein R.sup.4 is selected from: H,
methyl, ethyl, i-propyl, --CH.sub.2CH.sub.2OH, ##STR00552##
##STR00553## ##STR00554## ##STR00555## ##STR00556## ##STR00557##
##STR00558## ##STR00559## wherein the wavy lines represent the
point of attachment of R.sup.4.
22. The compound of claim 9, wherein R.sup.6 is --(C.sub.0-C.sub.1
alkyl)(C.sub.6-C.sub.8 cycloalkyl) optionally substituted by oxo,
--CN, --CF.sub.3, halo, --C(O)C.sub.1-C.sub.6 alkyl,
--C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a or
C.sub.1-C.sub.6 alkyl optionally substituted by oxo or F,
--(C.sub.0-C.sub.2 alkyl)C.sub.4-C.sub.5 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.2 alkyl)C.sub.3-C.sub.5
heteroaryl optionally substituted by halo, C.sub.1-C.sub.3 alkyl or
phenyl, wherein said phenyl is optionally substituted by
C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo, --CN, --OR.sup.a or
--NR.sup.aR.sup.b, --(C.sub.0-C.sub.2 alkyl)phenyl optionally
substituted by halo, --CN, --OR.sup.a or --NR.sup.aR.sup.b, or
--(C.sub.0-C.sub.2 alkyl)C.sub.6-C.sub.7 cycloalkyl optionally
substituted by oxo, C.sub.1-C.sub.3 alkyl or F.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. Ser. No.
14/134,150, filed on Dec. 19, 2013, which is a continuation of U.S.
Ser. No. 13/099,179, filed on May 2, 2011, now U.S. Pat. No.
8,637,526, issued Jan. 28, 2014, which is a continuation of
International Application No. PCT/US2009/063014, filed on Nov. 2,
2009, which claims the benefit of U.S. Ser. No. 61/110,497, filed
on Oct. 31, 2008, all of which are incorporated by reference herein
in their entirety.
FIELD OF THE INVENTION
[0002] Pyrazolopyrimidine compounds, inhibitors of JAK kinases, as
well as compositions containing these compounds and methods of use
including, but not limited to, in vitro, in situ and in vivo
diagnosis or treatment of mammalian cells.
BACKGROUND OF INVENTION
[0003] Cytokine pathways mediate a broad range of biological
functions, including many aspects of inflammation and immunity.
Janus kinases (JAK), including JAK1, JAK2, JAK3 and TYK2 are
cytoplasmic protein kinases that associate with type I and type II
cytokine receptors and regulate cytokine signal transduction.
Cytokine engagement with cognate receptors triggers activation of
receptor associated JAKs and this leads to JAK-mediated tyrosine
phosphorylation of signal transducer and activator of transcription
(STAT) proteins and ultimately transcriptional activation of
specific gene sets (Schindler et al., 2007, J Biol. Chem. 282:
20059-63). JAK1, JAK2 and TYK2 exhibit broad patterns of gene
expression, while JAK3 expression is limited to leukocytes.
Cytokine receptors are typically functional as heterodimers, and as
a result, more than one type of JAK kinase is usually associated
with cytokine receptor complexes. The specific JAKs associated with
different cytokine receptor complexes have been determined in many
cases through genetic studies and corroborated by other
experimental evidence.
[0004] JAK1 was initially identified in a screen for novel kinases
(Wilks A. F., 1989, Proc. Natl. Acad. Sci. U.S.A. 86:1603-1607).
Genetic and biochemical studies have shown that JAK1 is
functionally and physically associated with the type I interferon
(e.g., IFNalpha), type II interferon (e.g., IFNgamma), IL-2 and
IL-6 cytokine receptor complexes (Kisseleva et al., 2002, gene
285:1-24; Levy et al., 2005, Nat. Rev. Mol. Cell Biol. 3:651-662;
O'Shea et al., 2002, Cell, 109 (suppl.): S121-S131). JAK1 knockout
mice die perinatally due to defects in LIF receptor signaling
(Kisseleva et al., 2002, gene 285:1-24; O'Shea et al., 2002, Cell,
109 (suppl.): S121-S131). Characterization of tissues derived from
JAK1 knockout mice demonstrated critical roles for this kinase in
the IFN, IL-10, IL-2/IL-4, and IL-6 pathways. A humanized
monoclonal antibody targeting the IL-6 pathway (Tocilizumab) was
recently approved by the European Commission for the treatment of
moderate-to-severe rheumatoid arthritis (Scheinecker et al., 2009,
Nat. Rev. Drug Discov. 8:273-274).
[0005] Myeloproliferative disorders (MPD) originate in
hematopoietic stem cells and primarily manifest in elevated counts
of mostly normal cells of the myeloid lineage. A primary
distinction between Philadelphia-chromosome positive (Ph+) and
Philadelphia-chromosome negative (Ph-) can be made. Ph+MPD results
in chronic myelogenous leukemia and is driven by a bcr-abl fusion
protein that drives hematopoietic cell proliferation. Ph-MPD can be
further subclassified into three distinct disorders by related
varieties, namely polycythemia vera (PV), essential thrombocythemia
(ET) and idiopathic myelofibrosis (IMF). Dameshek, W., Blood
6(4):372-375 (1951). Patients with PV suffer from high counts of
red blood cells, whereas patients with ET have high levels of
circulating platelets. If left untreated, both diseases can result
in life-threatening thrombotic events. Patients with IMF experience
fibrosis of the bone marrow with subsequent displacement of
hematopoiesis into the spleen and liver. This primarily leads to
splenomegaly, which is followed by anemia in later stages of the
disease as hematopoiesis becomes non-productive. These patients
have a poor prognosis, although under certain conditions they can
be cured by means of an allogeneic bone marrow transplant. There is
no known cure for Ph-MPD diseases.
[0006] An activating mutation in the tyrosine kinase JAK2 is
associated with PV, ET, IMF and other diseases. Virtually all
patients with PV and about 50% patients with ET and IMF harbor this
mutation. Morgan, K. J. and Gilliland, D. G., Ann. Rev. Med.
59:213-222 (2008). The mutation is an exchange from valine to
phenylalanine at position 617 in the mature human JAK2 protein
(V617F). Additional mutations in JAK2, commonly found in exon 12
and referred to as exon 12 mutations, also have an activating
effect and can lead to MPD. Furthermore, a T875N mutation was
associated with megakaryoblastic leukemia. Finally, JAK2 fusion
proteins have been identified in acute leukemias.
[0007] The V617F mutation functions to activate JAK2, which leads
to MPD. In non-mutated form, JAK2 is linked to cytokine receptors
(i.e. EPO-R, TPO-R and others) and only gets activated if the
receptor itself is activated by stimulation with the cognate
cytokine ligand. Hematopoiesis as a whole is then regulated through
the availability of ligands. For example, the cytokine
erythropoietin (EPO) stimulates hematopoietic progenitor cells to
give rise to red blood cells. A mutation that uncouples JAK2
activation from EPO, therefore, leads to elevated levels of red
blood cells. By analogy, thrombopoietin (TPO) regulates platelet
growth by binding to the TPO-R, which in turn also signals through
JAK2. Thus, elevated levels of platelets can also result from
aberrant JAK2 activation.
[0008] Compounds are needed that inhibit JAK2, which would be
beneficial to patients with JAK2 driven myeloproliferative
disorders, as well as, other diseases that are responsive to the
inhibition of JAK2. Such diseases include both diseases in which
JAK2 is activated by mutation or amplification, as well as,
diseases in which JAK2 activation is a part of the oncogenic
cascade. Numerous tumor cell lines and tumor samples have high
levels of phospho-STAT3, which is a JAK2 target gene.
[0009] JAK3 associates exclusively with the gamma common cytokine
receptor chain, which is present in the IL-2, IL-4, IL-7, IL-9,
IL-15 and IL-21 cytokine receptor complexes. JAK3 is critical for
lymphoid cell development and proliferation and mutations in JAK3
result in severe combined immunodeficiency (SCID) (O'Shea et al.,
2002, Cell, 109 (suppl.): S121-S131). Based on its role in
regulating lymphocytes, JAK3 and JAK3-mediated pathways have been
targeted for immunosuppressive indications (e.g., transplantation
rejection and rheumatoid arthritis) (Baslund et al., 2005,
Arthritis & Rheumatism 52:2686-2692; Changelian et al., 2003,
Science 302: 875-878).
[0010] TYK2 associates with the type I interferon (e.g., IFNalpha),
IL-6, IL-10, IL-12 and IL-23 cytokine receptor complexes (Kisseleva
et al., 2002, Gene 285:1-24; Watford, W. T. & O'Shea, J. J.,
2006, Immunity 25:695-697). Consistent with this, primary cells
derived from a TYK2 deficient human are defective in type I
interferon, IL-6, IL-10, IL-12 and IL-23 signaling. A fully human
monoclonal antibody targeting the shared p40 subunit of the IL-12
and Il-23 cytokines (Ustekinumab) was recently approved by the
European Commission for the treatment of moderate-to-severe plaque
psoriasis (Krueger et al., 2007, N. Engl. J. Med. 356:580-92; Reich
et al., 2009, Nat. Rev. Drug Discov. 8:355-356). In addition, an
antibody targeting the IL-12 and IL-23 pathways underwent clinical
trials for treating Crohn's Disease (Mannon et al., 2004, N. Engl.
J. Med. 351:2069-79).
SUMMARY OF INVENTION
[0011] One embodiment includes a compound of Formula I:
##STR00002##
[0012] enantiomers, diasteriomers or pharmaceutically acceptable
salts thereof, wherein R.sup.1, R.sup.2, R.sup.7 and Z are defined
herein.
[0013] One embodiment includes a compound of Formula I:
##STR00003##
[0014] enantiomers, diasteriomers or pharmaceutically acceptable
salts thereof, wherein R.sup.1, R.sup.2 and Z are defined
herein.
[0015] Another embodiment includes a pharmaceutical composition
that includes a compound of Formula Ia and a pharmaceutically
acceptable carrier, adjuvant or vehicle.
[0016] Another embodiment includes a pharmaceutical composition
that includes a compound of Formula I and a pharmaceutically
acceptable carrier, adjuvant or vehicle.
[0017] Another embodiment includes a method of treating or
lessening the severity of a disease or condition responsive to the
inhibition of a JAK kinase activity in a patient, comprising
administering to the patient a therapeutically effective amount of
a compound of Formula Ia.
[0018] Another embodiment includes a method of treating or
lessening the severity of a disease or condition responsive to the
inhibition of JAK2 kinase activity in a patient. The method
includes administering to the patient a therapeutically effective
amount of a compound of Formula I.
[0019] Another embodiment includes a kit for treating a disease or
disorder responsive to the inhibition of a JAK kinase. The kit
includes a first pharmaceutical composition comprising a compound
of Formula I and instructions for use. In another embodiment, the
kit includes a first pharmaceutical composition comprising a
compound of Formula Ia and instructions for use.
DETAILED DESCRIPTION OF THE INVENTION
[0020] Reference will now be made in detail to certain embodiments,
examples of which are illustrated in the accompanying structures
and formulas. While the invention will be described in conjunction
with the enumerated embodiments, the invention is intended to cover
all alternatives, modifications, and equivalents, which may be
included within the scope of the present invention as defined by
the claims. One skilled in the art will recognize methods and
materials similar or equivalent to those described herein, which
could be used in the practice of the present invention.
[0021] The term "alkyl" refers to a saturated linear or
branched-chain monovalent hydrocarbon radical, wherein the alkyl
radical may be optionally substituted independently with one or
more substituents described herein. In one example, the alkyl
radical is one to eighteen carbon atoms (C.sub.1-C.sub.18). In
other examples, the alkyl radical is C.sub.0-C.sub.6,
C.sub.0-C.sub.5, C.sub.0-C.sub.3, C.sub.1-C.sub.12,
C.sub.1-C.sub.10, C.sub.1-C.sub.8, C.sub.1-C.sub.6,
C.sub.1-C.sub.5, C.sub.1-C.sub.4, or C.sub.1-C.sub.3. Examples of
alkyl groups include methyl (Me, --CH.sub.3), ethyl (Et,
--CH.sub.2CH.sub.3), 1-propyl (n-Pr, n-propyl,
--CH.sub.2CH.sub.2CH.sub.3), 2-propyl (i-Pr, i-propyl,
--CH(CH.sub.3).sub.2), 1-butyl (n-Bu, n-butyl,
--CH.sub.2CH.sub.2CH.sub.2CH.sub.3), 2-methyl-1-propyl (i-Bu,
i-butyl, --CH.sub.2CH(CH.sub.3).sub.2), 2-butyl (s-Bu, s-butyl,
--CH(CH.sub.3)CH.sub.2CH.sub.3), 2-methyl-2-propyl (t-Bu, t-butyl,
--C(CH.sub.3).sub.3), 1-pentyl (n-pentyl,
--CH.sub.2CH.sub.2CH.sub.2CH.sub.2CH.sub.3), 2-pentyl
(--CH(CH.sub.3)CH.sub.2CH.sub.2CH.sub.3), 3-pentyl
(--CH(CH.sub.2CH.sub.3).sub.2), 2-methyl-2-butyl
(--C(CH.sub.3).sub.2CH.sub.2CH.sub.3), 3-methyl-2-butyl
(--CH(CH.sub.3)CH(CH.sub.3).sub.2), 3-methyl-1-butyl
(--CH.sub.2CH.sub.2CH(CH.sub.3).sub.2), 2-methyl-1-butyl
(--CH.sub.2CH(CH.sub.3)CH.sub.2CH.sub.3), 1-hexyl
(--CH.sub.2CH.sub.2CH.sub.2CH.sub.2CH.sub.2CH.sub.3), 2-hexyl
(--CH(CH.sub.3)CH.sub.2CH.sub.2CH.sub.2CH.sub.3), 3-hexyl
(--CH(CH.sub.2CH.sub.3)(CH.sub.2CH.sub.2CH.sub.3)),
2-methyl-2-pentyl (--C(CH.sub.3).sub.2CH.sub.2CH.sub.2CH.sub.3),
3-methyl-2-pentyl (--CH(CH.sub.3)CH(CH.sub.3)CH.sub.2CH.sub.3),
4-methyl-2-pentyl (--CH(CH.sub.3)CH.sub.2CH(CH.sub.3).sub.2),
3-methyl-3-pentyl (--C(CH.sub.3)(CH.sub.2CH.sub.3).sub.2),
2-methyl-3-pentyl (--CH(CH.sub.2CH.sub.3)CH(CH.sub.3).sub.2),
2,3-dimethyl-2-butyl (--C(CH.sub.3).sub.2CH(CH.sub.3).sub.2),
3,3-dimethyl-2-butyl (--CH(CH.sub.3)C(CH.sub.3).sub.3, 1-heptyl and
1-octyl.
[0022] The term "alkenyl" refers to linear or branched-chain
monovalent hydrocarbon radical with at least one site of
unsaturation, i.e., a carbon-carbon double bond, wherein the
alkenyl radical may be optionally substituted independently with
one or more substituents described herein, and includes radicals
having "cis" and "trans" orientations, or alternatively, "E" and
"Z" orientations. In one example, the alkenyl radical is two to
eighteen carbon atoms (C.sub.2-C.sub.18). In other examples, the
alkenyl radical is C.sub.2-C.sub.12, C.sub.2-C.sub.10,
C.sub.2-C.sub.8, C.sub.2-C.sub.6 or C.sub.2-C.sub.3. Examples
include, but are not limited to, ethenyl or vinyl
(--CH.dbd.CH.sub.2), prop-1-enyl (--CH.dbd.CHCH.sub.3), prop-2-enyl
(--CH.sub.2CH.dbd.CH.sub.2), 2-methylprop-1-enyl, but-1-enyl,
but-2-enyl, but-3-enyl, buta-1,3-dienyl, 2-methylbuta-1,3-diene,
hex-1-enyl, hex-2-enyl, hex-3-enyl, hex-4-enyl and
hexa-1,3-dienyl.
[0023] The term "alkynyl" refers to a linear or branched monovalent
hydrocarbon radical with at least one site of unsaturation, i.e., a
carbon-carbon, triple bond, wherein the alkynyl radical may be
optionally substituted independently with one or more substituents
described herein. In one example, the alkynyl radical is two to
eighteen carbon atoms (C.sub.2-C.sub.18). In other examples, the
alkynyl radical is C.sub.2-C.sub.12, C.sub.2-C.sub.10,
C.sub.2-C.sub.8, C.sub.2-C.sub.6 or C.sub.2-C.sub.3. Examples
include, but are not limited to, ethynyl (--CCH), prop-1-ynyl
(--CCCH.sub.3), prop-2-ynyl (propargyl, --CH.sub.2CCH), but-1-ynyl,
but-2-ynyl and but-3-ynyl.
[0024] "Cycloalkyl" refers to a non-aromatic, saturated or
partially unsaturated hydrocarbon ring group wherein the cycloalkyl
group may be optionally substituted independently with one or more
substituents described herein. In one example, the cycloalkyl group
is 3 to 12 carbon atoms (C.sub.3-C.sub.12). In other examples,
cycloalkyl is C.sub.3-C.sub.8, C.sub.3-C.sub.10 or
C.sub.5-C.sub.10. In other examples, the cycloalkyl group, as a
monocycle, is C.sub.3-C.sub.8, C.sub.3-C.sub.6 or C.sub.5-C.sub.6.
In another example, the cycloalkyl group, as a bicycle, is
C.sub.7-C.sub.12. In another example, the cycloalkyl group, as a
spiro system, is C.sub.5-C.sub.12. Examples of monocyclic
cycloalkyl include cyclopropyl, cyclobutyl, cyclopentyl,
1-cyclopent-1-enyl, 1-cyclopent-2-enyl, 1-cyclopent-3-enyl,
cyclohexyl, 1-cyclohex-1-enyl, 1-cyclohex-2-enyl,
1-cyclohex-3-enyl, cyclohexadienyl, cycloheptyl, cyclooctyl,
cyclononyl, cyclodecyl, cycloundecyl and cyclododecyl. Exemplary
arrangements of bicyclic cycloalkyls having 7 to 12 ring atoms
include, but are not limited to, [4,4], [4,5], [5,5], [5,6] or
[6,6] ring systems. Exemplary bridged bicyclic cycloalkyls include,
but are not limited to, bicyclo[2.2.1]heptane, bicyclo[2.2.2]octane
and bicyclo[3.2.2]nonane.
[0025] Examples of spiro cycloalkyl include, spiro[2.2]pentane,
spiro[2.3]hexane, spiro[2.4]heptane, spiro[2.5]octane and
spiro[4.5]decane.
[0026] "Aryl" refers to a cyclic aromatic hydrocarbon group
optionally substituted independently with one or more substituents
described herein. In one example, the aryl group is 6-20 carbon
atoms (C.sub.6-C.sub.20). In another example, the aryl group is
C.sub.6-C.sub.10. In another example, the aryl group is
C.sub.6-C.sub.9. In another example, the aryl group is a C.sub.6
aryl group. Aryl includes bicyclic groups comprising an aromatic
ring with a fused non-aromatic or partially saturated ring.
Bicyclic aryl groups may be attached via the aromatic, non-aromatic
or partially saturated ring, as shown, for example, below:
##STR00004##
[0027] Example aryl groups include, but are not limited to, phenyl,
naphthalenyl, anthracenyl, indenyl, indanyl, 1,2-dihydronapthalenyl
and 1,2,3,4-tetrahydronaphthyl. In one example, aryl includes
phenyl.
[0028] "Halo" refers to F, Cl, Br or I.
[0029] "Heterocyclyl" refers to a saturated, partially unsaturated
(i.e., having one or more double and/or triple bonds within the
ring) or aromatic (heteroaryl) cyclic group in which at least one
ring atom is a heteroatom independently selected from nitrogen,
oxygen, phosphorus and sulfur, the remaining ring atoms being
carbon. The heterocyclyl group may be optionally substituted with
one or more substituents described below. In one embodiment,
heterocyclyl includes monocycles or bicycles having 1 to 9 carbon
ring atoms (C.sub.1-C.sub.9) with the remaining ring atoms being
heteroatoms selected from N, O, S and P. In other examples,
heterocyclyl includes monocycles or bicycles having
C.sub.1-C.sub.5, C.sub.3-C.sub.5, C.sub.3-C.sub.9 or
C.sub.4-C.sub.5, with the remaining ring atoms being heteroatoms
selected from N, O, S and P. In another embodiment, heterocyclyl
includes monocyclic 3-, 4-, 5-, 6- and 7-membered rings, containing
one or more heteroatoms independently selected from N, O and S,
with the remaining ring atoms being carbon. In another embodiment,
heterocyclyl includes monocyclic 5-, 6- and 7-membered rings,
containing one or more heteroatoms independently selected from N,
O, S and P. Examples of bicycle systems include, but are not
limited to, [3,5], [4,5], [5,5], [3,6], [4,6], [5,6], or [6,6]
systems. In another embodiment, heterocyclyl includes bridged ring
systems having [2.2.1], [2.2.2], [3.2.2] and [4.1.0] arrangements,
and having 1 to 3 heteroatoms selected from N, O, S and P. In
another embodiment, heterocyclyl includes spiro groups having 1 to
3 heteroatoms selected from N, O, S and P. The heterocyclyl group
may be a carbon-linked group or heteroatom-linked group.
"Heterocyclyl" includes a heterocyclyl group fused to a cycloalkyl.
"Heterocyclyl" also includes a heterocyclyl group fused to an, aryl
or heteroaryl group. Additional example heterocyclyl groups include
2,3-dihydrobenzofuranyl, octahydrobenzofuranyl,
1,3-dihydroisobenzofuran, chromanyl, isochromanyl, thiochromanyl,
isothiochromanyl, 2,3-dihydrobenzo[b]thiophene,
2,3-dihydrobenzo[b]thiophene 1,1-dioxide,
1,3-dihydrobenzo[c]thiophene, 1,3-dihydrobenzo[c]thiophene
2,2-dioxide, isoindolinyl, indolinyl and
2,3-dihydro-1H-pyrrolo[2,3-b]pyridine.
[0030] Exemplary heterocyclyl groups include, but are not limited
to, oxiranyl, aziridinyl, thiiranyl, azetidinyl, oxetanyl,
thietanyl, 1,2-dithietanyl, 1,3-dithietanyl, pyrrolidinyl,
piperidinyl, morpholinyl, thiomorpholinyl, thioxanyl, piperazinyl,
homopiperazinyl, homopiperidinyl, oxepanyl, thiepanyl, oxazepinyl,
diazepinyl, thiazepinyl, dihydrothienyl, dihydropyranyl,
dihydrofuranyl, tetrahydrofuranyl, tetrahydrothienyl,
tetrahydrothienyl 1,1-dioxide, tetrahydrothienyl 1-oxide,
tetrahydropyranyl, tetrahydrothiopyranyl, 1-pyrrolinyl,
2-pyrrolinyl, 3-pyrrolinyl, indolinyl, 2H-pyranyl, 4H-pyranyl,
dioxanyl, 1,3-dioxolanyl, pyrazolinyl, pyrazolidinyl, dithianyl,
dithiolanyl, pyrazolidinylimidazolinyl, imidazolidinyl,
3-azabicyco[3.1.0]hexanyl, 3-azabicyclo[4.1.0]heptanyl and
azabicyclo[2.2.2]hexanyl. Examples of a heterocyclyl group wherein
a ring atom is substituted with oxo (.dbd.O) are pyrimidinonyl and
1,1-dioxo-thiomorpholinyl. The heterocyclyl groups herein are
optionally substituted independently with one or more substituents
described herein. Heterocycles are described in Paquette, Leo A.;
"Principles of Modern Heterocyclic Chemistry" (W. A. Benjamin, New
York, 1968), particularly Chapters 1, 3, 4, 6, 7, and 9; "The
Chemistry of Heterocyclic Compounds, A series of Monographs" (John
Wiley & Sons, New York, 1950 to present), in particular Volumes
13, 14, 16, 19, and 28; and J. Am. Chem. Soc. (1960) 82:5566.
[0031] The term "heteroaryl" refers to an aromatic carbocyclic
radical in which at least one ring atom is a heteroatom
independently selected from nitrogen, oxygen and sulfur, the
remaining ring atoms being carbon. Heteroaryl groups may be
optionally substituted with one or more substituents described
herein. In one example, the heteroaryl group contains 1 to 9 carbon
ring atoms (C.sub.1-C.sub.9). In other examples, the heteroaryl
group is C.sub.1-C.sub.5, C.sub.3-C.sub.5 or C.sub.4-C.sub.5. In
one embodiment, exemplary heteroaryl groups include monocyclic
aromatic 5-, 6- and 7-membered rings containing one or more
heteroatoms independently selected from nitrogen, oxygen, and
sulfur. In another embodiment, exemplary heteroaryl groups include
fused ring systems of up to 9 carbon atoms wherein at least one
aromatic ring contains one or more heteroatoms independently
selected from nitrogen, oxygen, and sulfur. "Heteroaryl" includes
heteroaryl groups fused with an aryl, cycloalkyl or other
heterocyclyl group. Examples of heteroaryl groups include, but are
not limited to, pyridinyl, imidazolyl, imidazopyridinyl,
pyrimidinyl, pyrazolyl, triazolyl, pyrazinyl, tetrazolyl, furyl,
thienyl, isoxazolyl, thiazolyl, oxazolyl, isothiazolyl, pyrrolyl,
quinolinyl, isoquinolinyl, indolyl, benzimidazolyl, benzofuranyl,
cinnolinyl, indazolyl, indolizinyl, phthalazinyl, pyridazinyl,
triazinyl, isoindolyl, pteridinyl, purinyl, oxadiazolyl, triazolyl,
thiadiazolyl, thiadiazolyl, furazanyl, benzofurazanyl,
benzothiophenyl, benzothiazolyl, benzoxazolyl, quinazolinyl,
quinoxalinyl, naphthyridinyl and furopyridinyl.
[0032] In certain embodiments, the heterocyclyl or heteroaryl group
is C-attached. By way of example and not limitation, carbon bonded
heterocyclyls include bonding arrangements at position 2, 3, 4, 5,
or 6 of a pyridine, position 3, 4, 5, or 6 of a pyridazine,
position 2, 4, 5, or 6 of a pyrimidine, position 2, 3, 5, or 6 of a
pyrazine, position 2, 3, 4, or 5 of a furan, tetrahydrofuran,
thiofuran, thiophene, pyrrole or tetrahydropyrrole, position 2, 4,
or 5 of an oxazole, imidazole or thiazole, position 3, 4, or 5 of
an isoxazole, pyrazole, or isothiazole, position 2 or 3 of an
aziridine, position 2, 3, or 4 of an azetidine, position 2, 3, 4,
5, 6, 7, or 8 of a quinoline or position 1, 3, 4, 5, 6, 7, or 8 of
an isoquinoline. (2-pyridyl, 3-pyridyl, 4-pyridyl, 5-pyridyl,
6-pyridyl).
[0033] In certain embodiments, the heterocyclyl or heteroaryl group
is N-attached. By way of example and not limitation, the nitrogen
bonded heterocyclyl or heteroaryl group include bonding
arrangements at position 1 of an aziridine, azetidine, pyrrole,
pyrrolidine, 2-pyrroline, 3-pyrroline, imidazole, imidazolidine,
2-imidazoline, 3-imidazoline, pyrazole, pyrazoline, 2-pyrazoline,
3-pyrazoline, piperidine, piperazine, indole, indoline,
1H-indazole, position 2 of a isoindole, or isoindoline, position 4
of a morpholine, and position 9 of a carbazole, or
.beta.-carboline.
[0034] "Treat" and "treatment" includes both therapeutic treatment
and prophylactic or preventative measures, wherein the object is to
prevent or slow down (lessen) an undesired physiological change or
disorder, such as the development or spread of cancer. For purposes
of this invention, beneficial or desired clinical results include,
but are not limited to, alleviation of symptoms, diminishment of
extent of disease, stabilized (i.e., not worsening) state of
disease, delay or slowing of disease progression, amelioration or
palliation of the disease state, 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. Those in need of treatment include those
already with the condition or disorder as well as those prone to
have the condition or disorder, (for example, through a genetic
mutation) or those in which the condition or disorder is to be
prevented.
[0035] The phrase "therapeutically effective amount" means an
amount of a compound of the present invention that (i) treats or
prevents the particular disease, condition or disorder, (ii)
attenuates, ameliorates or eliminates one or more symptoms of the
particular disease, condition, or disorder, or (iii) prevents or
delays the onset of one or more symptoms of the particular disease,
condition or disorder described herein. In one embodiment, the
therapeutic effective amount is an amount sufficient to decrease or
alleviate the symptoms of a disorder responsive to the modulation
of JAK2 kinase. In the case of cancer, the therapeutically
effective amount of the drug may reduce the number of cancer cells;
reduce the tumor size; inhibit (i.e., slow to some extent and
preferably stop) cancer cell infiltration into peripheral organs;
inhibit (i.e., slow to some extent and preferably stop) tumor
metastasis; inhibit, to some extent, tumor growth; and/or relieve
to some extent one or more of the symptoms associated with the
cancer. To the extent the drug may prevent growth and/or kill
existing cancer cells, it may be cytostatic and/or cytotoxic. For
cancer therapy, efficacy can, for example, be measured by assessing
the time to disease progression (TTP) and/or determining the
response rate (RR). In one embodiment, the therapeutic effective
amount is an amount sufficient to decrease or alleviate the
symptoms of a disorder responsive to the modulation of JAK1 TYK2 or
JAK3 kinase. In the case of immunological disorders, the
therapeutic effective amount is an amount sufficient to decrease or
alleviate an allergic disorder, the symptoms of an autoimmune
and/or inflammatory disease, or the symptoms of an acute
inflammatory reaction (e.g. asthma). In some embodiments, a
therapeutically effective amount is an amount of a chemical entity
described herein sufficient to significantly decrease the activity
or number of B-cells.
[0036] The term "inhibition" indicates a significant decrease in
the baseline activity of a biological activity or process.
"Inhibition of a JAK kinase activity" refers to a decrease in
activity of a JAK1, JAK2, JAK3 or TYK2 kinase as a response to the
presence of at least one chemical entity described herein, relative
to the activity of the JAK1, JAK2, JAK3 or TYK2 kinase in the
absence of the at least one chemical entity. Inhibition of JAK
kinase activity also refers to observable inhibition of JAK kinase
activity in a biochemical assay for JAK kinase activity, such as
the assays described herein.
[0037] The term "bioavailability" refers to the systemic
availability (i.e., blood/plasma levels) of a given amount of drug
administered to a patient. Bioavailability is an absolute term that
indicates measurement of both the time (rate) and total amount
(extent) of drug that reaches the general circulation from an
administered dosage form.
[0038] The terms "cancer" and "cancerous" refer to or describe the
physiological condition in mammals that is typically characterized
by unregulated cell growth. A "tumor" comprises one or more
cancerous cells. Examples of cancer include, but are not limited
to, carcinoma, lymphoma, blastoma, sarcoma, and leukemia or
lymphoid malignancies. More particular examples of such cancers
include squamous cell cancer (e.g., epithelial squamous cell
cancer), lung cancer including small-cell lung cancer, non-small
cell lung cancer ("NSCLC"), adenocarcinoma of the lung and squamous
carcinoma of the lung, cancer of the peritoneum, hepatocellular
cancer, gastric or stomach cancer including gastrointestinal
cancer, pancreatic cancer, glioblastoma, cervical cancer, ovarian
cancer, liver cancer, bladder cancer, hepatoma, breast cancer,
colon cancer, rectal cancer, colorectal cancer, endometrial or
uterine carcinoma, salivary gland carcinoma, kidney or renal
cancer, prostate cancer, vulval cancer, thyroid cancer, hepatic
carcinoma, anal carcinoma, penile carcinoma, as well as head and
neck cancer.
[0039] A "chemotherapeutic agent" is a chemical compound useful in
the treatment of cancer. Examples of chemotherapeutic agents
include Erlotinib (TARCEVA.RTM., Genentech, Inc./OSI Pharm.),
Trastuzumab (HERCEPTIN.RTM., Genentech, Inc.); bevacizumab
(AVASTIN.RTM., Genentech, Inc.); Rituximab (RITUXAN.RTM.,
Genentech, Inc./Biogen Idec, Inc.), Bortezomib (VELCADE.RTM.,
Millennium Pharm.), Fulvestrant (FASLODEX.RTM., AstraZeneca),
Sutent (SU11248, Pfizer), Letrozole (FEMARA.RTM., Novartis),
Imatinib mesylate (GLEEVEC.RTM., Novartis), PTK787/ZK 222584
(Novartis), Oxaliplatin (Eloxatin.RTM., Sanofi), 5-FU
(5-fluorouracil), Leucovorin, Rapamycin (Sirolimus, RAPAMUNE.RTM.,
Wyeth), Lapatinib (GSK572016, Glaxo Smith Kline), Lonafarnib (SCH
66336), Sorafenib (BAY43-9006, Bayer Labs), and Gefitinib
(IRESSA.RTM., AstraZeneca), AG1478, AG1571 (SU 5271; Sugen),
alkylating agents such as thiotepa and CYTOXAN.RTM.
cyclosphosphamide; alkyl sulfonates such as busulfan, improsulfan
and piposulfan; aziridines such as benzodopa, carboquone,
meturedopa, and uredopa; ethylenimines and methylamelamines
including altretamine, triethylenemelamine,
triethylenephosphoramide, triethylenethiophosphoramide and
trimethylomelamine; acetogenins (especially bullatacin and
bullatacinone); a camptothecin (including the synthetic analog
topotecan); bryostatin; callystatin; CC-1065 (including its
adozelesin, carzelesin and bizelesin synthetic analogs);
cryptophycins (particularly cryptophycin 1 and cryptophycin 8);
dolastatin; duocarmycin (including the synthetic analogs, KW-2189
and CB1-TM1); eleutherobin; pancratistatin; a sarcodictyin;
spongistatin; nitrogen mustards such as chlorambucil,
chlornaphazine, cholophosphamide, estramustine, ifosfamide,
mechlorethamine, mechlorethamine oxide hydrochloride, melphalan,
novembichin, phenesterine, prednimustine, trofosfamide, uracil
mustard; nitrosureas such as carmustine, chlorozotocin,
fotemustine, lomustine, nimustine, and ranimnustine; antibiotics
such as the enediyne antibiotics (e.g., calicheamicin, especially
calicheamicin gamma 1I and calicheamicin omegaI1 (Angew Chem. Intl.
Ed. Engl. (1994) 33:183-186); dynemicin, including dynemicin A;
bisphosphonates, such as clodronate; an esperamicin; as well as
neocarzinostatin chromophore and related chromoprotein enediyne
antibiotic chromophores), aclacinomysins, actinomycin, authramycin,
azaserine, bleomycins, cactinomycin, carabicin, carminomycin,
carzinophilin, chromomycinis, dactinomycin, daunorubicin,
detorubicin, 6-diazo-5-oxo-L-norleucine, ADRIAMYCIN.RTM.
(doxorubicin), morpholino-doxorubicin, cyanomorpholino-doxorubicin,
2-pyrrolino-doxorubicin and deoxydoxorubicin), epirubicin,
esorubicin, idarubicin, marcellomycin, mitomycins such as mitomycin
C, mycophenolic acid, nogalamycin, olivomycins, peplomycin,
potfiromycin, puromycin, quelamycin, rodorubicin, streptonigrin,
streptozocin, tubercidin, ubenimex, zinostatin, zorubicin;
anti-metabolites such as methotrexate and 5-fluorouracil (5-FU);
folic acid analogs such as denopterin, methotrexate, pteropterin,
trimetrexate; purine analogs such as fludarabine, 6-mercaptopurine,
thiamiprine, thioguanine; pyrimidine analogs such as ancitabine,
azacitidine, 6-azauridine, carmofur, cytarabine, dideoxyuridine,
doxifluridine, enocitabine, floxuridine; androgens such as
calusterone, dromostanolone propionate, epitiostanol, mepitiostane,
testolactone; anti-adrenals such as aminoglutethimide, mitotane,
trilostane; folic acid replenisher such as frolinic acid;
aceglatone; aldophosphamide glycoside; aminolevulinic acid;
eniluracil; amsacrine; bestrabucil; bisantrene; edatraxate;
defofamine; demecolcine; diaziquone; elfornithine; elliptinium
acetate; an epothilone; etoglucid; gallium nitrate; hydroxyurea;
lentinan; lonidainine; maytansinoids such as maytansine and
ansamitocins; mitoguazone; mitoxantrone; mopidanmol; nitraerine;
pentostatin; phenamet; pirarubicin; losoxantrone; podophyllinic
acid; 2-ethylhydrazide; procarbazine; PSK.RTM. polysaccharide
complex (JHS Natural Products, Eugene, Oreg.); razoxane; rhizoxin;
sizofiran; spirogermanium; tenuazonic acid; triaziquone;
2,2',2''-trichlorotriethylamine; trichothecenes (especially T-2
toxin, verracurin A, roridin A and anguidine); urethan; vindesine;
dacarbazine; mannomustine; mitobronitol; mitolactol; pipobroman;
gacytosine; arabinoside ("Ara-C"); cyclophosphamide; thiotepa;
taxoids, e.g., TAXOL.RTM. (paclitaxel; Bristol-Myers Squibb
Oncology, Princeton, N.J.), ABRAXANE.RTM. (Cremophor-free),
albumin-engineered nanoparticle formulations of paclitaxel
(American Pharmaceutical Partners, Schaumberg, Ill.), and
TAXOTERE.RTM. (doxetaxel; Rhone-Poulenc Rorer, Antony, France);
chloranbucil; GEMZAR.RTM. (gemcitabine); 6-thioguanine;
mercaptopurine; methotrexate; platinum analogs such as cisplatin
and carboplatin; vinblastine; etoposide (VP-16); ifosfamide;
mitoxantrone; vincristine; NAVELBINE.RTM. (vinorelbine);
novantrone; teniposide; edatrexate; daunomycin; aminopterin;
xeloda; ibandronate; CPT-11; topoisomerase inhibitor RFS 2000;
difluoromethylornithine (DMFO); retinoids such as retinoic acid;
capecitabine; and pharmaceutically acceptable salts, acids and
derivatives of any of the above.
[0040] Also included in the definition of "chemotherapeutic agent"
are: (i) anti-hormonal agents that act to regulate or inhibit
hormone action on tumors such as anti-estrogens and selective
estrogen receptor modulators (SERMs), including, for example,
tamoxifen (including NOLVADEX.RTM.; tamoxifen citrate), raloxifene,
droloxifene, 4-hydroxytamoxifen, trioxifene, keoxifene, LY117018,
onapristone, and FARESTON.RTM. (toremifine citrate); (ii) aromatase
inhibitors that inhibit the enzyme aromatase, which regulates
estrogen production in the adrenal glands, such as, for example,
4(5)-imidazoles, aminoglutethimide, MEGASE.RTM. (megestrol
acetate), AROMASIN.RTM. (exemestane; Pfizer), formestanie,
fadrozole, RIVISOR.RTM. (vorozole), FEMARA.RTM. (letrozole;
Novartis), and ARIMIDEX.RTM. (anastrozole; AstraZeneca); (iii)
anti-androgens such as flutamide, nilutamide, bicalutamide,
leuprolide, and goserelin; as well as troxacitabine (a
1,3-dioxolane nucleoside cytosine analog); (iv) protein kinase
inhibitors; (v) lipid kinase inhibitors; (vi) antisense
oligonucleotides, particularly those which inhibit expression of
genes in signaling pathways implicated in aberrant cell
proliferation, such as, for example, PKC-alpha, Raf and H-Ras;
(vii) ribozymes such as VEGF inhibitors (e.g., ANGIOZYME.RTM.) and
(viii) vaccines such as gene therapy vaccines, for example,
ALLOVECTIN.RTM., LEUVECTIN.RTM., and VAXID.RTM.; PROLEUKIN.RTM.
rIL-2; a topoisomerase 1 inhibitor such as LURTOTECAN.RTM.;
ABARELIX.RTM. rmRH; (ix) anti-angiogenic agents; and (x)
pharmaceutically acceptable salts, acids and derivatives of any of
the above.
[0041] Additional chemotherapeutic agents include therapeutic
antibodies such as alemtuzumab (Campath), cetuximab (ERBITUX.RTM.,
Imclone), panitumumab (VECTIBIX.RTM., Amgen), pertuzumab
(OMNITARG.RTM., 2C4, Genentech), tositumomab (Bexxar, Corixia), and
the antibody drug conjugate, gemtuzumab ozogamicin (MYLOTARG.RTM.,
Wyeth). Additional humanized monoclonal antibodies with therapeutic
potential as agents in combination with the compounds of the
invention include: apolizumab, aselizumab, atlizumab, bapineuzumab,
bivatuzumab mertansine, cantuzumab mertansine, cedelizumab,
certolizumab pegol, cidfusituzumab, cidtuzumab, daclizumab,
eculizumab, efalizumab, epratuzumab, erlizumab, felvizumab,
fontolizumab, gemtuzumab ozogamicin, inotuzumab ozogamicin,
ipilimumab, labetuzumab, lintuzumab, matuzumab, mepolizumab,
motavizumab, motovizumab, natalizumab, nimotuzumab, nolovizumab,
numavizumab, ocrelizumab, omalizumab, palivizumab, pascolizumab,
pecfusituzumab, pectuzumab, pexelizumab, ralivizumab, ranibizumab,
reslivizumab, reslizumab, resyvizumab, rovelizumab, ruplizumab,
sibrotuzumab, siplizumab, sontuzumab, tacatuzumab tetraxetan,
tadocizumab, talizumab, tefibazumab, tocilizumab, toralizumab,
tucotuzumab celmoleukin, tucusituzumab, umavizumab, urtoxazumab,
ustekinumab, visilizumab, and the anti-interleukin-12
(ABT-874/J695, Wyeth Research and Abbott Laboratories) which is a
recombinant exclusively human-sequence, full-length
IgG.sub.1.lamda. antibody genetically modified to recognize
interleukin-12 p40 protein.
[0042] The term "prodrug" as used in this application refers to a
precursor or derivative form of a pharmaceutically active substance
that is less efficacious to the patient or cytotoxic to tumor cells
compared to the parent drug and is capable of being enzymatically
or hydrolytically activated or converted into the more active
parent form. See, e.g., Wilman, "Prodrugs in Cancer Chemotherapy"
Biochemical Society Transactions, 14, pp. 375-382, 615th Meeting
Belfast (1986) and Stella et al., "Prodrugs: A Chemical Approach to
Targeted Drug Delivery," Directed Drug Delivery, Borchardt et al.,
(ed.), pp. 247-267, Humana Press (1985). The prodrugs of this
invention include, but are not limited to, phosphate-containing
prodrugs, thiophosphate-containing prodrugs, sulfate-containing
prodrugs, peptide-containing prodrugs, D-amino acid-modified
prodrugs, glycosylated prodrugs, .beta.-lactam-containing prodrugs,
optionally substituted phenoxyacetamide-containing prodrugs or
optionally substituted phenylacetamide-containing prodrugs,
5-fluorocytosine and other 5-fluorouridine prodrugs which can be
converted into the more active cytotoxic free drug. Examples of
cytotoxic drugs that can be derivatized into a prodrug form for use
in this invention include, but are not limited to, those
chemotherapeutic agents described above.
[0043] "Liposome" refers to a vesicle composed of one or more
lipids, phospholipids and/or surfactants, which is useful for
delivery of a drug (such as a compound of the present invention
and, optionally, a chemotherapeutic agent) to a mammal. The
components of the liposome can be in a bilayer formation, similar
to the lipid arrangement of biological membranes.
[0044] The term "package insert" is used to refer to instructions
customarily included in commercial packages of therapeutic
products, that contain information about the indications, usage,
dosage, administration, contraindications and/or warnings
concerning the use of such therapeutic products.
[0045] The term "chiral" refers to molecules which have the
property of non-superimposability of the mirror image partner,
while the term "achiral" refers to molecules which are
superimposable on their mirror image partner.
[0046] The term "stereoisomers" refers to compounds which have
identical chemical constitution, but differ with regard to the
arrangement of the atoms or groups in space.
[0047] "Diastereomer" refers to a stereoisomer with two or more
centers of chirality and whose molecules are not mirror images of
one another. Diastereomers have different physical properties, e.g.
melting points, boiling points, spectral properties, and
reactivities. Mixtures of diastereomers may separate under high
resolution analytical procedures such as electrophoresis and
chromatography.
[0048] "Enantiomers" refer to two stereoisomers of a compound which
are non-superimposable mirror images of one another.
[0049] Stereochemical definitions and conventions used herein
generally follow S. P. Parker, Ed., McGraw-Hill Dictionary of
Chemical Terms (1984) McGraw-Hill Book Company, New York; and
Eliel, E. and Wilen, S., "Stereochemistry of Organic Compounds",
John Wiley & Sons, Inc., New York, 1994. Many organic compounds
exist in optically active forms, i.e., they have the ability to
rotate the plane of plane-polarized light. In describing an
optically active compound, the prefixes D and L, or R and S, are
used to denote the absolute configuration of the molecule about its
chiral center(s). The prefixes d and 1 or (+) and (-) are employed
to designate the sign of rotation of plane-polarized light by the
compound, with (-) or 1 meaning that the compound is levorotatory.
A compound prefixed with (+) or d is dextrorotatory. For a given
chemical structure, these stereoisomers are identical except that
they are mirror images of one another. A specific stereoisomer may
also be referred to as an enantiomer, and a mixture of such isomers
is often called an enantiomeric mixture. A 50:50 mixture of
enantiomers is referred to as a racemic mixture or a racemate,
which may occur where there has been no stereoselection or
stereospecificity in a chemical reaction or process. The terms
"racemic mixture" and "racemate" refer to an equimolar mixture of
two enantiomeric species, devoid of optical activity.
[0050] The phrase "pharmaceutically acceptable salt," as used
herein, refers to pharmaceutically acceptable organic or inorganic
salts of a compound of the present invention. Exemplary salts
include, but are not limited, to sulfate, citrate, acetate,
oxalate, chloride, bromide, iodide, nitrate, bisulfate, phosphate,
acid phosphate, isonicotinate, lactate, salicylate, acid citrate,
tartrate, oleate, tannate, pantothenate, bitartrate, ascorbate,
succinate, maleate, gentisinate, fumarate, gluconate, glucuronate,
saccharate, formate, benzoate, glutamate, methanesulfonate,
ethanesulfonate, benzenesulfonate, p-toluenesulfonate, and pamoate
(i.e., 1,1'-methylene-bis-(2-hydroxy-3-naphthoate)) salts. A
pharmaceutically acceptable salt may involve the inclusion of
another molecule such as an acetate ion, a succinate ion or other
counter ion. The counter ion may be any organic or inorganic moiety
that stabilizes the charge on the parent compound. Furthermore, a
pharmaceutically acceptable salt may have more than one charged
atom in its structure. Instances where multiple charged atoms are
part of the pharmaceutically acceptable salt can have multiple
counter ions. Hence, a pharmaceutically acceptable salt can have
one or more charged atoms and/or one or more counter ion.
[0051] A "solvate" refers to an association or complex of one or
more solvent molecules and a compound of the present invention.
Examples of solvents that form solvates include, but are not
limited to, water, isopropanol, ethanol, methanol, DMSO, ethyl
acetate, acetic acid, and ethanolamine. The term "hydrate" refers
to the complex where the solvent molecule is water.
[0052] The term "protecting group" or "Pg" refers to a substituent
that is commonly employed to block or protect a particular
functionality while reacting other functional groups on the
compound. For example, an "amino-protecting group" is a substituent
attached to an amino group that blocks or protects the amino
functionality in the compound. Suitable amino-protecting groups
include acetyl, trifluoroacetyl, phthalimido, t-butoxycarbonyl
(BOC), benzyloxycarbonyl (CBz) and 9-fluorenylmethylenoxycarbonyl
(Fmoc). Similarly, a "hydroxy-protecting group" refers to a
substituent of a hydroxy group that blocks or protects the hydroxy
functionality. Suitable hydroxy-protecting groups include acetyl,
trialkylsilyl, dialkylphenylsilyl, benzoyl, benzyl,
benzyloxymethyl, methyl, methoxymethyl, triarylmethyl, and
tetrahydropyranyl. A "carboxy-protecting group" refers to a
substituent of the carboxy group that blocks or protects the
carboxy functionality. Common carboxy-protecting groups include
--CH.sub.2CH.sub.2SO.sub.2Ph, cyanoethyl, 2-(trimethylsilyl)ethyl,
2-(trimethylsilyl)ethoxymethyl, 2-(p-toluenesulfonyl)ethyl,
2-(p-nitrophenylsulfenyl)ethyl, 2-(diphenylphosphino)-ethyl,
nitroethyl and the like. For a general description of protecting
groups and their use, see T. W. Greene and P. Wuts, Protective
Groups in Organic Synthesis, Third Ed., John Wiley & Sons, New
York, 1999; and P. Kocienski, Protecting Groups, Third Ed., Verlag,
2003.
[0053] The term "patient" includes human patients and animal
patients. The term "animal" includes companion animals (e.g., dogs,
cats and horses), food-source animals, zoo animals, marine animals,
birds and other similar animal species.
[0054] The phrase "pharmaceutically acceptable" indicates that the
substance or composition must be compatible chemically and/or
toxicologically, with the other ingredients comprising a
formulation, and/or the mammal being treated therewith.
[0055] The terms "compound(s) of this invention," and "compound(s)
of the present invention", unless otherwise indicated, include
compounds of Formula I and Ia, and stereoisomers, tautomers,
solvates, metabolites, salts (e.g., pharmaceutically acceptable
salts), polymorphs and prodrugs thereof. Unless otherwise stated,
structures depicted herein are also meant to include compounds that
differ only in the presence of one or more isotopically enriched
atoms. For example, compounds of Formulas I and Ia, and formulas
1a-1l, wherein one or more hydrogen atoms are replaced by deuterium
or tritium, or one or more carbon atoms are replaced by a .sup.13C-
or .sup.14C-enriched carbon are within the scope of this
invention.
Pyrazolopyrimidine JAK Inhibitor Compounds
[0056] In one embodiment, a compound of Formula Ia, and
pharmaceutical formulations thereof, are provided that are useful
in the treatment of diseases, conditions and/or disorders
responsive to the inhibition of JAK kinases.
[0057] In one embodiment, a compound of Formula I, and
pharmaceutical formulations thereof, are provided that are useful
in the treatment of diseases, conditions and/or disorders
responsive to the inhibition of JAK kinases.
[0058] Another embodiment includes compounds of Formula Ia:
##STR00005## [0059] enantiomers, diastereomers or pharmaceutically
acceptable salts thereof, wherein: [0060] R.sup.1 is H; [0061]
R.sup.2 is --OR.sup.4, --NR.sup.3R.sup.4,
--NR.sup.3NR.sup.12R.sup.4, --NR.sup.3S(O)R.sup.4 or
--NR.sup.3S(O).sub.2R.sup.4; [0062] R.sup.3 is H or C.sub.1-C.sub.6
alkyl, C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6 alkynyl, wherein
said alkyl, alkenyl and alkynyl are optionally substituted by oxo,
F, OR.sup.a or NR.sup.aR.sup.b; [0063] R.sup.4 is H,
C.sub.1-C.sub.6 alkyl, C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6
alkynyl, --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.10 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by R.sup.8,
and said aryl, cycloalkyl, heteroaryl and heterocyclyl are
optionally substituted by R.sup.9; or [0064] R.sup.3 and R.sup.4
are taken together with the nitrogen to which they are attached to
form a C.sub.1-C.sub.9 heterocyclyl optionally substituted by
R.sup.13; [0065] Z is --OR.sup.6 or --NR.sup.5R.sup.6; [0066]
R.sup.5 is H or C.sub.1-C.sub.3 alkyl; [0067] R.sup.6 is H,
C.sub.1-C.sub.10 alkyl, C.sub.2-C.sub.10 alkenyl, C.sub.2-C.sub.10
alkynyl, --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.8 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by R.sup.10,
and said aryl, cycloalkyl, heteroaryl and heterocyclyl are
optionally substituted by R.sup.11; [0068] R.sup.7 is H, halo,
C.sub.1-C.sub.3 alkyl, C.sub.2-C.sub.3 alkenyl, C.sub.2-C.sub.3
alkynyl or --O(C.sub.1-C.sub.3 alkyl); [0069] R.sup.8 is
independently oxo, F, OR.sup.a or NR.sup.aR.sup.b; [0070] R.sup.9
is independently oxo, --CN, --CF.sub.3, halo, --C(O)C.sub.1-C.sub.6
alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a,
--(C.sub.0-C.sub.5 alkyl)SR.sup.a,
--O[C(R.sup.a).sub.2].sub.1-3O--, C.sub.1-C.sub.3 alkyl optionally
substituted by oxo or F, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heterocyclyl optionally substituted by halo, oxo, C.sub.1-C.sub.3
alkyl or C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5
alkyl)C.sub.6 aryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl --O(C.sub.1-C.sub.3 alkyl), or
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heteroaryl optionally
substituted by halo or C.sub.1-C.sub.3 alkyl; [0071] R.sup.10 is
independently oxo, F, OR.sup.a or NR.sup.aR.sup.b; [0072] R.sup.11
is independently oxo, --CN, --CF.sub.3, halo,
--O[C(R.sup.a).sub.2].sub.1-3O--, --C(O)C.sub.1-C.sub.6 alkyl,
--C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a,
C.sub.1-C.sub.6 alkyl optionally substituted by oxo or F,
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heteroaryl optionally substituted by halo or C.sub.1-C.sub.3 alkyl,
--(C.sub.0-C.sub.5 alkyl)phenyl optionally substituted by
C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo, --CN, --OR.sup.a or
--NR.sup.aR.sup.b, or --(C.sub.0-C.sub.5 alkyl)C.sub.3-C.sub.6
cycloalkyl optionally substituted by oxo, --NR.sup.cR.sup.d,
C.sub.1-C.sub.3 alkyl or F; [0073] R.sup.12 is H or C.sub.1-C.sub.3
alkyl; [0074] R.sup.13 is oxo, halo, C.sub.1-C.sub.3 alkyl,
--C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, C.sub.6 aryl,
C.sub.3-C.sub.6 cycloalkyl, C.sub.1-C.sub.5 heteroaryl or
C.sub.4-C.sub.5 heterocyclyl; wherein said aryl, cycloalkyl,
heteroaryl and heterocyclyl are optionally substituted by
C.sub.1-C.sub.4 alkyl, --(C.sub.0-C.sub.3 alkyl)OR.sup.c, oxo, halo
or NR.sup.cR.sup.d; [0075] R.sup.a and R.sup.b are independently H,
--CF.sub.3, --CHF.sub.2, --CH.sub.2F, C.sub.1-C.sub.6 alkyl,
C.sub.6 aryl, C.sub.3-C.sub.6 cycloalkyl or C.sub.4-C.sub.5
heterocyclyl; wherein said alkyl, aryl and cycloalkyl are
optionally substituted by C.sub.1-C.sub.4 alkyl, --(C.sub.0-C.sub.3
alkyl)OR, oxo, halo, NR.sup.cR.sup.d or C.sub.4-C.sub.5
heterocyclyl; or [0076] R.sup.a and R.sup.b together with the atom
to which they are attached form a C.sub.1-C.sub.5 heterocyclyl
optionally substituted by oxo, F, C.sub.1-C.sub.3 alkyl,
--C(O)C.sub.1-C.sub.6 alkyl or --C(O)OR.sup.a; and [0077] R.sup.c
and R.sup.d are independently H, C.sub.1-C.sub.3 alkyl,
C.sub.3-C.sub.6 cycloalkyl or phenyl, wherein said alkyl,
cycloalkyl and phenyl are optionally substituted by halo,
CH.sub.3OH, NH.sub.2, C(O)O(C.sub.1-C.sub.6 alkyl) or
C(O)NH(C.sub.1-C.sub.6 alkyl).
[0078] Another embodiment includes compounds of Formula I:
##STR00006## [0079] enantiomers, diastereomers or pharmaceutically
acceptable salts thereof, wherein: [0080] R.sup.1 is H; [0081]
R.sup.2 is --OR.sup.4 or --NR.sup.3R.sup.4; [0082] R.sup.3 is H or
C.sub.1-C.sub.6 alkyl, C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6
alkynyl, wherein said alkyl, alkenyl and alkynyl are optionally
substituted by oxo, F, OR.sup.a or NR.sup.aR.sup.b; [0083] R.sup.4
is H, C.sub.1-C.sub.6 alkyl, C.sub.2-C.sub.6 alkenyl,
C.sub.2-C.sub.6 alkynyl, --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9
heterocyclyl), --(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6
cycloalkyl), --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by oxo, F,
OR.sup.a or NR.sup.aR.sup.b, and said aryl, cycloalkyl, heteroaryl
and heterocyclyl are optionally substituted by [0084] oxo, --CN,
--CF.sub.3, halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a,
--O[C(R.sup.a).sub.2].sub.1-3O--, [0085] C.sub.1-C.sub.3 alkyl
optionally substituted by oxo or F, [0086] --(C.sub.0-C.sub.5
alkyl)C.sub.1-C.sub.9 heterocyclyl optionally substituted by halo,
oxo, C.sub.1-C.sub.3 alkyl or C(O)C.sub.1-C.sub.3 alkyl, or [0087]
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heteroaryl optionally
substituted by halo or C.sub.1-C.sub.3 alkyl; [0088] R.sup.3 and
R.sup.4 are taken together with the nitrogen to which they are
attached to form a C.sub.1-C.sub.5 heterocyclyl optionally
substituted by oxo, F, C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6
alkyl or --C(O)OR.sup.a; [0089] R.sup.3 and R.sup.4 are taken
together with the nitrogen to which they are attached to form a
C.sub.1-C.sub.5 heterocyclyl optionally substituted by oxo, F,
C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6 alkyl or
--C(O)OR.sup.a; [0090] Z is --OR.sup.6 or --NR.sup.5R.sup.6; [0091]
R.sup.5 is H or C.sub.1-C.sub.3 alkyl; [0092] R.sup.6 is H,
C.sub.1-C.sub.10alkyl, C.sub.2-C.sub.10 alkenyl, C.sub.2-C.sub.10
alkynyl, --(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.8 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein said
alkyl, alkenyl and alkynyl are optionally substituted by oxo, F,
OR.sup.a or NR.sup.aR.sup.b, and said aryl, cycloalkyl, heteroaryl
and heterocyclyl are optionally substituted by [0093] oxo, --CN,
--CF.sub.3, halo, --O[C(R.sup.a).sub.2].sub.1-3O--,
--C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)OR.sup.a, [0094] C.sub.1-C.sub.6 alkyl optionally substituted
by oxo or F, [0095] --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heterocyclyl optionally substituted by halo, oxo, C.sub.1-C.sub.3
alkyl or C(O)C.sub.1-C.sub.3 alkyl, [0096] --(C.sub.0-C.sub.5
alkyl)C.sub.1-C.sub.9 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl, [0097] --(C.sub.0-C.sub.5 alkyl)phenyl
optionally substituted by C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo,
--CN, --OR.sup.a or --NR.sup.aR.sup.b, or [0098] --(C.sub.0-C.sub.5
alkyl)C.sub.3-C.sub.6 cycloalkyl optionally substituted by oxo,
--NR.sup.cR.sup.d, C.sub.1-C.sub.3 alkyl or F; [0099] R.sup.a and
R.sup.b are independently H, --CF.sub.3, --CHF.sub.2, --CH.sub.2F,
C.sub.1-C.sub.6 alkyl, C.sub.6 aryl, C.sub.3-C.sub.6 cycloalkyl or
C.sub.4-C.sub.5 heterocyclyl; wherein said alkyl, aryl and
cycloalkyl are optionally substituted by C.sub.1-C.sub.4 alkyl,
(C.sub.0-C.sub.3 alkyl)OR.sup.c, oxo, halo, NR.sup.cR.sup.d or
C.sub.4-C.sub.5 heterocyclyl; or [0100] R.sup.a and R.sup.b
together with the atom to which they are attached form a
C.sub.1-C.sub.5 heterocyclyl optionally substituted by oxo, F,
C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6 alkyl or
--C(O)OR.sup.a; and [0101] R.sup.c and R.sup.d are independently H,
C.sub.1-C.sub.3 alkyl, C.sub.3-C.sub.6 cycloalkyl or phenyl,
wherein said alkyl, cycloalkyl and phenyl are optionally
substituted by halo, CH.sub.3OH or NH.sub.2, C(O)O(C.sub.1-C.sub.6
alkyl) or C(O)NH(C.sub.1-C.sub.6 alkyl).
[0102] In one embodiment, R.sup.2 is --NR.sup.3R.sup.4,
--NR.sup.3NR.sup.12R.sup.4, --NR.sup.3S(O)R.sup.4 or
--NR.sup.3S(O).sub.2R.sup.4. In another embodiment, R.sup.2 is
--NR.sup.3R.sup.4, --NR.sup.3NR.sup.12R.sup.4 or
--NR.sup.3S(O).sub.2R.sup.4. In another embodiment, R.sup.2 is
--NR.sup.3S(O).sub.2R.sup.4. In another embodiment, R.sup.2 is
--NR.sup.3NR.sup.12R.sup.4. In one embodiment, R.sup.2 is
--NR.sup.3R.sup.4. In one embodiment, R.sup.2 is --NHR.sup.4.
[0103] In one embodiment of Formula I, R.sup.2 is
--NR.sup.3R.sup.4.
[0104] In one embodiment of Formula I, R.sup.2 is --NHR.sup.4.
[0105] In one embodiment of Formula I, R.sup.2 is --OR.sup.4.
[0106] In one embodiment of Formula I, R.sup.2 is
--NR.sup.3R.sup.4, and R.sup.3 is H or C.sub.1-C.sub.4 alkyl
optionally substituted by OH.
[0107] In one embodiment of Formula I, R.sup.4 is H or
C.sub.1-C.sub.4 alkyl optionally substituted by OH.
[0108] In one embodiment of Formula I, R.sup.4 is H, methyl, ethyl,
i-propyl or --CH.sub.2CH.sub.2OH.
[0109] In one embodiment of Formula I, R.sup.2 is
--NR.sup.3R.sup.4, and R.sup.3 and R.sup.4 are H.
[0110] In one embodiment of Formula I, R.sup.4 is C.sub.1-C.sub.6
alkyl, --(C.sub.0-C.sub.3 alkyl)phenyl, (C.sub.0-C.sub.3
alkyl)(C.sub.3-C.sub.5 heterocyclyl), --(C.sub.0-C.sub.3
alkyl)(C.sub.6-C.sub.7 cycloalkyl), --(C.sub.0-C.sub.3
alkyl)(C.sub.3-C.sub.5 heteroaryl), wherein said alkyl is
optionally substituted by oxo, F, OR.sup.a or NR.sup.aR.sup.b, and
said phenyl, cycloalkyl, heteroaryl and heterocyclyl are optionally
substituted by [0111] C.sub.1-C.sub.3 alkyl optionally substituted
by F, [0112] --O[C(R.sup.a).sub.2].sub.1-3O--, --CF.sub.3,
--OCF.sub.3, --OCHF.sub.2, halo, --C(O)C.sub.1-C.sub.6 alkyl,
--C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a, [0113]
--(C.sub.0-C.sub.3 alkyl)C.sub.3-C.sub.5 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.6 alkyl, or [0114] --(C.sub.0-C.sub.3
alkyl)C.sub.3-C.sub.5 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl.
[0115] In one embodiment, R.sup.4 is C.sub.1-C.sub.6 alkyl,
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.10 aryl), wherein said
alkyl is optionally substituted by R.sup.8, and said aryl,
cycloalkyl, heteroaryl and heterocyclyl are optionally substituted
by R.sup.9.
[0116] In another embodiment, R.sup.3 and R.sup.4 are taken
together with the nitrogen to which they are attached to form a
C.sub.1-C.sub.5 heterocyclyl optionally substituted by
R.sup.13.
[0117] In one embodiment of Formula I, R.sup.3 and R.sup.4 are
taken together with the nitrogen to which they are attached to form
a C.sub.4-C.sub.5 heterocyclyl optionally substituted by oxo, F,
C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6 alkyl or
--C(O)OR.sup.a.
[0118] In one embodiment of Formula I, R.sup.4 is phenyl,
--(CH.sub.2)phenyl, --(CH.sub.2CH.sub.2)phenyl,
--CH(CH.sub.3)phenyl, --C(CH.sub.3).sub.2phenyl, --(C.sub.0-C.sub.3
alkyl)C.sub.4-C.sub.5 heterocyclyl or --(C.sub.0-C.sub.3
alkyl)C.sub.3-C.sub.5 heteroaryl, wherein said phenyl is optionally
substituted by 1 or 2 substituents independently selected from
methyl, ethyl, i-propyl, F, Cl, --OCH.sub.2O--,
--OCH.sub.2CH.sub.2O--, --OCH.sub.2CH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2NH.sub.2, --OCH.sub.2CH.sub.2NMe.sub.2,
--OCH.sub.2(C.sub.4-C.sub.5 heterocyclyl), --OH, --OCH.sub.3,
--OCH.sub.2CH.sub.3, --CF.sub.3, --OCF.sub.3 and --OCHF.sub.2, said
heterocyclyl is selected from tetrahydropyranyl, tetrahydrofuranyl,
pyrrolidinyl, morpholinyl, piperazinyl and piperidinyl, said
heterocyclyl is optionally substituted by halo, methyl or
C(O)O(t-butyl), said heteroaryl is selected from pyrazolyl,
imidazolyl, furanyl and thienyl, and said heteroaryl is optionally
substituted by halo or methyl.
[0119] In one embodiment, R.sup.4 is --(C.sub.0-C.sub.5
alkyl)(C.sub.6-C.sub.10 aryl) optionally substituted by R.sup.9. In
one example, R.sup.4 is --(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.10
aryl) optionally substituted by (C.sub.1-C.sub.3 alkyl) or halo,
and said aryl is phenyl, naphthalenyl, indenyl, indanyl,
1,2-dihydronapthalenyl and 1,2,3,4-tetrahydronaphthyl. In another
example, R.sup.4 is selected from:
##STR00007##
[0120] wherein the wavy lines represent the point of attachment of
R.sup.4 in the compound of the invention.
[0121] In one embodiment, R.sup.4 is phenyl, --(CH.sub.2)phenyl,
--(CH.sub.2CH.sub.2)phenyl, --CH(CH.sub.3)phenyl,
--CH(CH.sub.2CH.sub.3)phenyl, --(R)--CH(CH.sub.3)phenyl,
--(S)--CH(CH.sub.3)phenyl, --(R)--CH(CH.sub.2CH.sub.3)phenyl,
--(S)--CH(CH.sub.2CH.sub.3)phenyl or --C(CH.sub.3).sub.2phenyl,
wherein said phenyl is optionally substituted by R.sup.9. In one
example, said phenyl is optionally substituted by 1 or 2 R.sup.9,
wherein R.sup.9 is independently selected from methyl, ethyl,
i-propyl, cyclopropyl, F, Cl, --OCH.sub.2O--,
--OCH.sub.2CH.sub.2O--, --OCH.sub.2CH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2NH.sub.2, --OCH.sub.2CH.sub.2NMe.sub.2,
--O(CH.sub.2).sub.1-3(C.sub.4-C.sub.5 heterocyclyl),
C.sub.3-C.sub.5 heteroaryl, --(CH.sub.2).sub.0-3C.sub.3-C.sub.5
heterocyclyl optionally substituted by C.sub.1-C.sub.3 alkyl or
halo, --OH, --OCH.sub.3, --OCH.sub.2CH.sub.3, --SH, --SCH.sub.3,
--SCH.sub.2CH.sub.3,
--N(CH.sub.3).sub.2--N(CH.sub.2CH.sub.3).sub.2, --CN, --CF.sub.3,
--OCF.sub.3, --OCHF.sub.2 and C(O)O(C.sub.1-C.sub.3 alkyl). In
another example, R.sup.4 is selected from:
##STR00008## ##STR00009## ##STR00010## ##STR00011##
##STR00012##
[0122] wherein the wavy lines represent the point of attachment of
R.sup.4.
[0123] In another embodiment, R.sup.4 is --(C.sub.0-C.sub.5
alkyl)(C.sub.1-C.sub.9 heterocyclyl) or --(C.sub.0-C.sub.5
alkyl)(C.sub.1-C.sub.9 heteroaryl), wherein said heteroaryl and
heterocyclyl are optionally substituted by R.sup.9. In one example,
R.sup.4 is pyridinyl, --(CH.sub.2)pyridinyl,
--(CH.sub.2CH.sub.2)pyridinyl, --CH(CH.sub.3)pyridinyl,
pyrimidinyl, --(CH.sub.2)pyrimidinyl, imidazolyl,
--(CH.sub.2)imidazolyl, pyrazolyl, --(CH.sub.2)pyrazolyl,
tetrahydropyranyl, tetrahydrofuranyl, pyrrolidinyl, morpholinyl,
piperazinyl or piperidinyl optionally substituted by R.sup.9. In
one example, R.sup.9 is methyl, ethyl, i-propyl, F, Cl, --NH.sub.2,
--NMe.sub.2, --OCH.sub.3, --OH, --OCH.sub.2CH.sub.3, --CF.sub.3,
--OCF.sub.3--OCHF.sub.2, C(O)O(t-butyl) or phenyl. In another
example, R.sup.4 is selected from:
##STR00013## ##STR00014##
[0124] wherein the wavy lines represent the point of attachment of
R.sup.4.
[0125] In one embodiment of Formula I, R.sup.4 is C.sub.4-C.sub.5
heterocyclyl or --(CH.sub.2)C.sub.4-C.sub.5 heterocyclyl, wherein
said heterocyclyl is tetrahydropyranyl, tetrahydrofuranyl,
pyrrolidinyl, piperazinyl, piperidinyl or morpholinyl optionally
substituted by methyl or C(O)O(t-butyl).
[0126] In one embodiment of Formula I, R.sup.3 and R.sup.4 are
taken together with the nitrogen to which they are attached to form
a pyrrolidinyl, piperazinyl, piperidinyl or morpholinyl optionally
substituted by methyl.
[0127] In one embodiment, R.sup.3 and R.sup.4 are taken together
with the nitrogen to which they are attached to form azetidinyl
optionally substituted by R.sup.13. In another embodiment, R.sup.3
and R.sup.4 are taken together with the nitrogen to which they are
attached to form azetidinyl optionally substituted by phenyl.
[0128] In one embodiment of Formula I, R.sup.4 is pyridinyl or
--(CH.sub.2)pyridinyl, wherein said pyridinyl is optionally
substituted by methyl, F or Cl.
[0129] In one embodiment, R.sup.4 is cyclopropyl, cyclobuytl,
cyclopentyl, cyclohexyl, cycloheptyl, --(CH.sub.2)cyclopropyl,
--(CH.sub.2)cyclobutyl, --(CH.sub.2)cyclopentyl,
--(CH.sub.2)cyclohexyl, --(CH.sub.2)cycloheptyl, indanyl or
tetrahydronaphthalenyl and said R.sup.4 is independently optionally
substituted by R.sup.9. In one example, R.sup.9 is F, oxo, methyl
or CH.sub.2NH.sub.2.
[0130] In one embodiment of Formula I, R.sup.4 is cyclohexyl,
cycloheptyl, --(CH.sub.2)cyclohexyl or --(CH.sub.2)cycloheptyl and
said cyclohexyl and cycloheptyl are independently optionally
substituted by oxo, methyl or CH.sub.2NH.sub.2.
[0131] In one embodiment, Z is --NR.sup.5R.sup.6. In one
embodiment, Z is --NR.sup.5R.sup.6, and R.sup.5 is H. In one
embodiment, Z is --NR.sup.5R.sup.6, R.sup.5 is H and R.sup.6 is
H.
[0132] In one embodiment of Formula I, Z is --NR.sup.5R.sup.6.
[0133] In one embodiment of Formula I, Z is --OR.sup.6.
[0134] In one embodiment of Formula I, Z is --NR.sup.5R.sup.6, and
R.sup.5 is H.
[0135] In one embodiment, R.sup.6 is C.sub.1-C.sub.10 alkyl,
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.8 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), wherein alkyl is
optionally substituted by R.sup.10, and wherein aryl, cycloalkyl,
heteroaryl and heterocyclyl are optionally substituted by
R.sup.11.
[0136] In one embodiment of Formula I, R.sup.6 is C.sub.1-C.sub.8
alkyl, --(C.sub.0-C.sub.3 alkyl)(C.sub.3-C.sub.5 heterocyclyl),
--(C.sub.0-C.sub.3 alkyl)(C.sub.3-C.sub.8 cycloalkyl),
--(C.sub.0-C.sub.3 alkyl)(C.sub.3-C.sub.5 heteroaryl) or
--(C.sub.0-C.sub.1 alkyl)(phenyl), wherein said alkyl is optionally
substituted by oxo, F, OR.sup.a or NR.sup.aR.sup.b, and said
phenyl, cycloalkyl, heteroaryl and heterocyclyl are optionally
substituted by [0137] oxo, --CN, --CF.sub.3, halo,
--C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)OR.sup.a, [0138] C.sub.1-C.sub.6 alkyl optionally substituted
by oxo or F, [0139] --(C.sub.0-C.sub.2 alkyl)C.sub.3-C.sub.5
heterocyclyl optionally substituted by halo, oxo, C.sub.1-C.sub.3
alkyl or C(O)C.sub.1-C.sub.3 alkyl, [0140] --(C.sub.0-C.sub.2
alkyl)C.sub.3-C.sub.5 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl, [0141] --(C.sub.0-C.sub.2 alkyl)phenyl
optionally substituted by C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo,
--CN, --OR.sup.a or --NR.sup.aR.sup.b, or [0142] --(C.sub.0-C.sub.2
alkyl)C.sub.6-C.sub.8 cycloalkyl optionally substituted by oxo,
--NR.sup.cR.sup.d, C.sub.1-C.sub.3 alkyl or F.
[0143] In one embodiment, R.sup.6 is C.sub.1-C.sub.8 alkyl,
optionally substituted by R.sup.10. In one embodiment, R.sup.6 is
methyl, ethyl, i-propyl, n-butyl, s-butyl, t-butyl,
3,3-dimethylbut-1-yl, pent-3-yl, octyl,
--C(CH.sub.2).sub.2CH.sub.2OH, --CH.sub.2CH.sub.2OH or
--CH.sub.2CH.sub.2OCH.sub.3.
[0144] In one embodiment of Formula I, R.sup.6 is C.sub.1-C.sub.8
alkyl, optionally substituted by oxo, F, OR.sup.a or
NR.sup.aR.sup.b.
[0145] In one embodiment of Formula I, R.sup.6 is methyl, ethyl,
i-propyl, n-butyl, s-butyl, t-butyl, 3,3-dimethylbut-1-yl,
pent-3-yl, octyl, --C(CH.sub.2).sub.2CH.sub.2OH,
--CH.sub.2CH.sub.2OH or --CH.sub.2CH.sub.2OCH.sub.3.
[0146] In one embodiment, R.sup.6 is C.sub.3-C.sub.5 heterocyclyl
or --(CH.sub.2)C.sub.3-C.sub.5 heterocyclyl optionally substituted
by R.sup.11. In another embodiment, R.sup.6 is C.sub.3-C.sub.5
heterocyclyl or --(CH.sub.2)C.sub.3-C.sub.5 heterocyclyl optionally
substituted by R.sup.11, wherein said heterocyclyl is
tetrahydrofuranyl, tetrahydropyranyl, piperazinyl, piperidinyl,
morpholinyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl,
thiazolyl, isothiazolyl, pyridinyl, and wherein said R.sup.11 is
independently oxo, --CN, --CF.sub.3, halo, --C(O)C.sub.1-C.sub.6
alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a,
C.sub.1-C.sub.6 alkyl optionally substituted by oxo or F,
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heteroaryl optionally substituted by halo or C.sub.1-C.sub.3 alkyl,
--(C.sub.0-C.sub.5 alkyl)phenyl optionally substituted by
C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo, --CN, --OR.sup.a or
--NR.sup.aR.sup.b, or --(C.sub.0-C.sub.5 alkyl)C.sub.3-C.sub.6
cycloalkyl optionally substituted by oxo, --NR.sup.cR.sup.d,
C.sub.1-C.sub.3 alkyl or F. In one example, R.sup.6 is
C.sub.3-C.sub.5 heteroaryl optionally substituted by 1-4 R.sup.11.
In another example, R.sup.6 is C.sub.3-C.sub.5 heteroaryl, wherein
said heteroaryl is substituted with phenyl optionally substituted
by C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo, --CN, --OR.sup.a or
--NR.sup.aR.sup.b, and wherein said heteroaryl is further
optionally substituted by 1-2 R.sup.11 independently selected from
halo, --CF.sub.3 or C.sub.1-C.sub.6 alkyl optionally substituted by
oxo or F
[0147] In one embodiment of Formula I, R.sup.6 is C.sub.3-C.sub.5
heterocyclyl or --(CH.sub.2)C.sub.3-C.sub.5 heterocyclyl, wherein
said heterocyclyl is tetrahydrofuranyl, piperazinyl, piperidinyl or
morpholinyl optionally substituted by methyl, ethyl or
C(O)Ot-butyl.
[0148] In one embodiment of Formula I, R.sup.6 is
--(C.sub.0-C.sub.2 alkyl)C.sub.3-C.sub.8 cycloalkyl, wherein said
cycloalkyl is optionally substituted by C.sub.1-C.sub.6 alkyl,
C(O)OCH.sub.3, C(O)OH, OH, CN, C(O)cyclohexyl, C(O)(C.sub.4-C.sub.5
heterocyclyl) or --CH.sub.2cyclohexyl optionally substituted by
NH.sub.2, and wherein said heterocyclyl is selected from
piperazinyl, piperidinyl or morpholinyl, and said heterocyclyl is
optionally substituted by methyl or CH.sub.2NH.sub.2.
[0149] In one embodiment, R.sup.6 is cyclopropyl, cyclobutyl,
cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl,
--(CH.sub.2)cyclohexyl, --(CH.sub.2CH.sub.2)cyclohexyl,
--(CH.sub.2)cycloheptyl, bicyclo[2.2.1]heptyl or
--(CH.sub.2)bicyclo[2.2.1]heptyl, and wherein R.sup.6 is optionally
substituted by 1 to 3 substituents selected from oxo, halo,
C.sub.1-C.sub.6 alkyl, C(O)OCH.sub.3, C(O)OH, OH, CN,
C(O)cyclohexyl, C(O)(C.sub.4-C.sub.5 heterocyclyl) and
--CH.sub.2cyclohexyl optionally substituted by NH.sub.2, and
wherein said heterocyclyl is selected from piperazinyl, piperidinyl
or morpholinyl, and said heterocyclyl is optionally substituted by
methyl or CH.sub.2NH.sub.2.
[0150] In one embodiment of Formula I, R.sup.6 is cyclopropyl,
cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl,
--(CH.sub.2)cyclohexyl, --(CH.sub.2CH.sub.2)cyclohexyl,
--(CH.sub.2)cycloheptyl, bicyclo[2.2.1]heptyl or
--(CH.sub.2)bicyclo[2.2.1]heptyl, and wherein R.sup.6 is optionally
substituted by 1 to 3 C.sub.1-C.sub.6 alkyl, C(O)OCH.sub.3, C(O)OH,
OH, CN, C(O)cyclohexyl, C(O)(C.sub.4-C.sub.5 heterocyclyl) or
--CH.sub.2cyclohexyl optionally substituted by NH.sub.2, and
wherein said heterocyclyl is selected from piperazinyl, piperidinyl
or morpholinyl, and said heterocyclyl is optionally substituted by
methyl or CH.sub.2NH.sub.2.
[0151] In one embodiment, R.sup.6 is C.sub.3-C.sub.5 heteroaryl or
--(CH.sub.2)C.sub.3-C.sub.5 heteroaryl, and wherein R.sup.6 is
optionally substituted by R.sup.11.
[0152] In one embodiment of Formula I, R.sup.6 is C.sub.3-C.sub.5
heteroaryl or --(CH.sub.2)C.sub.3-C.sub.5 heteroaryl, and wherein
R.sup.6 is optionally substituted by one or more substituents
selected from oxo, --CN, --CF.sub.3, halo, --C(O)C.sub.1-C.sub.6
alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a, [0153]
C.sub.1-C.sub.6 alkyl optionally substituted by oxo or F, [0154]
--(C.sub.0-C.sub.2 alkyl)C.sub.4-C.sub.5 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, [0155] --(C.sub.0-C.sub.2
alkyl)C.sub.3-C.sub.5 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl, [0156] --(C.sub.0-C.sub.2 alkyl)phenyl
optionally substituted by C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo,
--CN, --OR.sup.a or --NR.sup.aR.sup.b, and [0157]
--(C.sub.0-C.sub.2 alkyl)C.sub.6-C.sub.7 cycloalkyl optionally
substituted by oxo, C.sub.1-C.sub.3 alkyl or F.
[0158] In one embodiment, R.sup.6 is isoxazolyl, oxazolyl,
isothiazolyl, thiazolyl, imidazolyl, pyrazolyl or pyridinyl, and
wherein R.sup.6 is optionally substituted by 1 to 3 substituents
selected from --CF.sub.3, halo, C.sub.1-C.sub.6 alkyl optionally
substituted by oxo or F, --(C.sub.1-C.sub.6 alkyl)OR.sup.a, phenyl
optionally substituted by methyl, ethyl, isopropyl, --CF.sub.3,
--CN, OR.sup.a, Cl, F, Br or I, and pyridinyl optionally
substituted by methyl, ethyl, isopropyl, --CF.sub.3, --CN,
OR.sup.a, Cl, F, Br or I.
[0159] In one embodiment of Formula I, R.sup.6 is pyrazolyl or
pyridinyl, and wherein R.sup.6 is optionally substituted by 1 to 3
substituents selected from C.sub.1-C.sub.6 alkyl optionally
substituted by oxo or F, halo and phenyl, and wherein said phenyl
is optionally substituted by methyl, ethyl, isopropyl, --CF.sub.3,
--CN, OR.sup.a, Cl or F.
[0160] In one embodiment of Formula I, R.sup.6 is phenyl or
--CH.sub.2phenyl, and wherein said phenyl is optionally substituted
by F, Cl, --OH, --OCH.sub.3, --OCH.sub.2CH.sub.3, --Ophenyl,
--C(O)NH.sub.2, --C(O)OH, --C(O)OCH.sub.3, cyclohexyl, methyl,
ethyl or i-propyl.
[0161] In one embodiment, R.sup.7 is halo. In one embodiment,
R.sup.7 is Cl. In one embodiment, R.sup.7 is H.
[0162] In one embodiment, R.sup.8 is independently oxo, halo,
OR.sup.a or NR.sup.aR.sup.b. In one embodiment, R.sup.8 is
independently halo. In one embodiment, R.sup.8 is F.
[0163] In one embodiment, R.sup.9 is independently --CF.sub.3,
halo, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)OR.sup.a, --(C.sub.0-C.sub.5 alkyl)SR.sup.a,
--O[C(R.sup.a).sub.2].sub.1-3O--, C.sub.1-C.sub.3 alkyl optionally
substituted by oxo or F, --(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6
cycloalkyl) optionally substituted by oxo or F, --(C.sub.0-C.sub.5
alkyl)C.sub.1-C.sub.9 heterocyclyl optionally substituted by halo,
oxo, C.sub.1-C.sub.3 alkyl or C(O)C.sub.1-C.sub.3 alkyl,
--(C.sub.0-C.sub.5 alkyl)C.sub.6 aryl optionally substituted by
halo or C.sub.1-C.sub.3 alkyl --O(C.sub.1-C.sub.3 alkyl), or
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heteroaryl optionally
substituted by halo or C.sub.1-C.sub.3 alkyl. In one embodiment,
R.sup.9 is independently Cl, F, --CF.sub.3, --CH.sub.3, --OH,
--OCH.sub.3, --OCH.sub.2CH.sub.3, --O(CH.sub.2).sub.2O--,
--O(CH.sub.2).sub.3O--, --OCHF.sub.2, --OCF.sub.3,
--N(CH.sub.3).sub.2, --NH.sub.2, morpholinyl, pyrolidinyl,
pyrazolyl, --OCH.sub.2(pyrazolyl), N-methyl-piperidinyl or
--O(CH.sub.2).sub.2(morpholinyl).
[0164] In one embodiment, R.sup.10 is independently oxo, halo,
OR.sup.a or NR.sup.aR.sup.b. In one embodiment, R.sup.10 is
independently halo. In one embodiment, R.sup.10 is F.
[0165] In one embodiment, R.sup.11 is independently oxo,
--CF.sub.3, halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a, C.sub.1-C.sub.6 alkyl optionally
substituted by oxo or F, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heterocyclyl optionally substituted by halo, oxo, C.sub.1-C.sub.3
alkyl or C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5
alkyl)C.sub.1-C.sub.9 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)phenyl optionally
substituted by C.sub.1-C.sub.4 alkyl, C.sub.1-C.sub.4 alkenyl,
C.sub.1-C.sub.4 alkynyl, C.sub.3-C.sub.6 cycloalkyl, --CF.sub.3,
halo, --CN, --OR.sup.a or --NR.sup.aR.sup.b, or --(C.sub.0-C.sub.5
alkyl)C.sub.3-C.sub.6 cycloalkyl optionally substituted by oxo,
--NR.sup.cR.sup.d, C.sub.1-C.sub.3 alkyl or F. In one embodiment,
R.sup.11 is independently Cl, F, --CF.sub.3, --CH.sub.3,
--CH.sub.2CH.sub.3, --OH, --OCH.sub.3, --OCH.sub.2CH.sub.3,
2-methyl-5-chlorophenyl, 2,5-dichlorophenyl, 2,5-difluorophenyl,
2,5-dimethylphenyl, gem-difluoro, gem-dimethyl, 2-hydroxyethyl,
2-methoxyethyl, 3,5-dimethylphenyl, 3,5-dichlorophenyl,
3,5-difluorophenyl, 2,4-difluorophenyl, 2-chloro-5-methylphenyl,
2-methylphenyl, 2-trifluoromethylphenyl, 2-chlorophenyl,
2-fluorophenyl, 3-methylphenyl, 3-fluorophenyl, 3-chlorophenyl,
3-cyanophenyl, 2-iodophenyl, 2-bromophenyl, phenyl, pyridyl,
--C(O)OCH.sub.3, --CH.sub.2(4-aminocyclohex-1-yl),
2-chloro-6-iodophenyl, 2,6-dichlorophenyl, 2,6-dimethylphenyl,
2,6-dibromophenyl, 2-chloro-6-methylphenyl,
2-chloro-6-fluorophenyl, 2-bromo-6-fluorophenyl,
2-bromo-6-methylphenyl, 2-fluoro-6-methylphenyl,
2-chloro-6-trifluoromethylphenyl, 2-thiomethylphenyl,
2-ethylphenyl, 2-ethynyl-6-methylphenyl, 2-ethynyl-6-fluorophenyl,
2-chloro-5-cyanophenyl, 2-methoxyphenyl, 2-cyclopropylphenyl,
2-methoxy-6-methylphenyl2-ethynylphenyl, 2-chloro-4-cyanophenyl,
2-isopropylphenyl or 2-trifluoromethoxyphenyl.
[0166] In one embodiment of Formula I, R.sup.6 is: [0167]
--(C.sub.0-C.sub.1 alkyl)(C.sub.6-C.sub.8 cycloalkyl) optionally
substituted by oxo, --CN, --CF.sub.3, halo, --C(O)C.sub.1-C.sub.6
alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a or
C.sub.1-C.sub.6 alkyl optionally substituted by oxo or F, [0168]
--(C.sub.0-C.sub.2 alkyl)C.sub.4-C.sub.5 heterocyclyl optionally
substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, [0169] --(C.sub.0-C.sub.2
alkyl)C.sub.3-C.sub.5 heteroaryl optionally substituted by halo,
C.sub.1-C.sub.3 alkyl or phenyl, wherein said phenyl is optionally
substituted by C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo, --CN,
--OR.sup.a or --NR.sup.aR.sup.b, [0170] --(C.sub.0-C.sub.2
alkyl)phenyl optionally substituted by halo, --CN, --OR.sup.a or
--NR.sup.aR.sup.b, or [0171] --(C.sub.0-C.sub.2
alkyl)C.sub.6-C.sub.7 cycloalkyl optionally substituted by oxo,
C.sub.1-C.sub.3 alkyl or F; and [0172] R.sup.4 is H or
--(C.sub.0-C.sub.3 alkyl)phenyl, wherein said phenyl is optionally
substituted by: [0173] C.sub.1-C.sub.3 alkyl optionally substituted
by F, [0174] --OCH.sub.2O--, --OCH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2CH.sub.2O--, --CF.sub.3, --OCF.sub.3,
--OCHF.sub.2, halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a, [0175] --(C.sub.0-C.sub.3
alkyl)C.sub.4-C.sub.4 heterocyclyl optionally substituted by halo,
oxo, C.sub.1-C.sub.3 alkyl or C(O)C.sub.1-C.sub.3 alkyl, or [0176]
--(C.sub.0-C.sub.3 alkyl)C.sub.3-C.sub.5 heteroaryl optionally
substituted by halo or C.sub.1-C.sub.3 alkyl.
[0177] In another embodiment, R.sup.6 is cyclohexyl optionally
substituted by 1 or 2 substituents independently selected from
methyl, ethyl, pentyl, C(O)OCH.sub.3, C(O)OH, OH, CN,
C(O)cyclohexyl and C(O)(C.sub.4-C.sub.5 heterocyclyl), wherein said
heterocyclyl is piperazinyl, piperidinyl or morpholinyl, optionally
substituted by methyl, CH.sub.2NH.sub.2, or CH.sub.2cyclohexyl
optionally substituted by NH.sub.2; and R.sup.4 is
--(CH.sub.2)phenyl, wherein said phenyl is optionally substituted
by 1 or 2 substituents independently selected from methyl, F, Cl,
--OCH.sub.2O--, --OCH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2CH.sub.2O--, --OCH.sub.2CH.sub.2NMe.sub.2,
--OCH.sub.2(C.sub.4-C.sub.5 heterocyclyl), --OH, --CF.sub.3,
--OCF.sub.3, --OCH.sub.3, --OCH.sub.2CH.sub.3, --OCHF.sub.2,
--(C.sub.0-C.sub.1 alkyl)C.sub.4-C.sub.5 heterocyclyl, wherein said
heterocyclyl is selected from pyrrolidinyl, morpholinyl,
piperazinyl or piperidinyl and is optionally substituted by methyl,
and --(C.sub.0-C.sub.1 alkyl)C.sub.4-C.sub.5 heteroaryl, wherein
said heteroaryl is selected from pyrazolyl, imidazolyl, furanyl and
thienyl and is optionally substituted by methyl. In an example of
this embodiment, R.sup.2 is --NR.sup.3R.sup.4, and R.sup.1 and
R.sup.3 are H.
[0178] In one embodiment of Formula I, R.sup.6 is
--(C.sub.0-C.sub.1 alkyl)(C.sub.6-C.sub.7 cycloalkyl), wherein said
cycloalkyl is optionally substituted by oxo, --CN, --CF.sub.3,
halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a, [0179] C.sub.1-C.sub.6 alkyl
optionally substituted by oxo or F, [0180] --(C.sub.0-C.sub.2
alkyl)C.sub.4-C.sub.5 heterocyclyl optionally substituted by halo,
oxo, C.sub.1-C.sub.3 alkyl or C(O)C.sub.1-C.sub.3 alkyl, [0181]
--(C.sub.0-C.sub.2 alkyl)C.sub.3-C.sub.5 heteroaryl optionally
substituted by halo or C.sub.1-C.sub.3 alkyl, [0182]
--(C.sub.0-C.sub.2 alkyl)phenyl optionally substituted by halo,
--CN, --OR.sup.a or --NR.sup.aR.sup.b, or [0183] --(C.sub.0-C.sub.2
alkyl)C.sub.6-C.sub.7 cycloalkyl optionally substituted by oxo,
C.sub.1-C.sub.3 alkyl or F; and [0184] R.sup.4 is
--(C.sub.0-C.sub.2 alkyl)pyridinyl, wherein said pyridinyl is
optionally substituted by --OCH.sub.2O--, --OCH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2CH.sub.2O--, --CF.sub.3, --OCF.sub.3,
--OCHF.sub.2, halo, --C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a,
--C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)OR.sup.a, [0185] C.sub.1-C.sub.3 alkyl
optionally substituted by F, [0186] --(C.sub.0-C.sub.3
alkyl)C.sub.4-C.sub.4 heterocyclyl optionally substituted by halo,
oxo, C.sub.1-C.sub.3 alkyl or C(O)C.sub.1-C.sub.3 alkyl, or [0187]
--(C.sub.0-C.sub.3 alkyl)C.sub.3-C.sub.5 heteroaryl optionally
substituted by halo or C.sub.1-C.sub.3 alkyl.
[0188] In one embodiment of Formula I, R.sup.6 is cyclohexyl
optionally substituted by 1 or 2 substituents independently
selected from methyl, ethyl, pentyl, C(O)OCH.sub.3, C(O)OH, OH, CN,
C(O)cyclohexyl, C(O)(C.sub.4-C.sub.5 heterocyclyl), wherein said
heterocyclyl is piperazinyl, piperidinyl or morpholinyl optionally
substituted by methyl, CH.sub.2NH.sub.2, or CH.sub.2cyclohexyl
optionally substituted by NH.sub.2; and R.sup.4 is pyridinyl or
--(CH.sub.2)pyridinyl, wherein said pyridinyl is optionally
substituted by methyl, F or Cl. In another example of this
embodiment, R.sup.2 is --NR.sup.3R.sup.4, and R.sup.1 and R.sup.3
are H.
[0189] In one embodiment, R.sup.6 is C.sub.1-C.sub.4 alkyl
optionally substituted by R.sup.10, C.sub.3-C.sub.5 heterocyclyl,
C.sub.3-C.sub.5 heteroaryl or C.sub.3-C.sub.7 cycloalkyl, wherein
said heterocyclyl, heteroaryl and cycloalkyl are optionally
substituted by R.sup.11; and R.sup.4 is H, --(C.sub.0-C.sub.5
alkyl)(C.sub.1-C.sub.9 heterocyclyl), --(C.sub.0-C.sub.5
alkyl)(C.sub.3-C.sub.6 cycloalkyl), --(C.sub.0-C.sub.5
alkyl)(C.sub.1-C.sub.9 heteroaryl), --(C.sub.0-C.sub.5
alkyl)(C.sub.6-C.sub.10 aryl), wherein said alkyl is optionally
substituted by R.sup.8, and said aryl, cycloalkyl, heteroaryl and
heterocyclyl are optionally substituted by R.sup.9.
[0190] In one embodiment of Formula I, R.sup.1 is H; R.sup.2 is
--NR.sup.3R.sup.4; R.sup.3 is H; and R.sup.6 is C.sub.3-C.sub.5
heteroaryl, optionally substituted by one or more substituents
selected from oxo, --CF.sub.3, halo, --C(O)C.sub.1-C.sub.6 alkyl,
[0191] C.sub.1-C.sub.6 alkyl optionally substituted by oxo or F,
[0192] --(C.sub.0-C.sub.2 alkyl)C.sub.4-C.sub.5 heterocyclyl
optionally substituted by halo, oxo, C.sub.1-C.sub.3 alkyl or
C(O)C.sub.1-C.sub.3 alkyl, [0193] --(C.sub.0-C.sub.2
alkyl)C.sub.3-C.sub.5 heteroaryl optionally substituted by halo or
C.sub.1-C.sub.3 alkyl, [0194] --(C.sub.0-C.sub.2 alkyl)phenyl
optionally substituted by C.sub.1-C.sub.3 alkyl, --CF.sub.3, halo,
--CN, --OR.sup.a or --NR.sup.aR.sup.b, and [0195]
--(C.sub.0-C.sub.2 alkyl)C.sub.6-C.sub.7 cycloalkyl optionally
substituted by oxo, C.sub.1-C.sub.3 alkyl or F. And in one example
of this embodiment, R.sup.4 is H.
[0196] In an embodiment of Formula I, when R.sup.4 is
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.5 heterocyclyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.3-C.sub.6 cycloalkyl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.1-C.sub.9 heteroaryl),
--(C.sub.0-C.sub.5 alkyl)(C.sub.6-C.sub.9 aryl), then the aryl,
cycloalkyl, heteroaryl and heterocyclyl are optionally substituted
by 1-3 substitutents independently selected from oxo,
C.sub.1-C.sub.3 alkyl optionally substituted by 1-3 substitutents
independently selected from oxo and F, --CN, --CF.sub.3, halo,
--C(O)C.sub.1-C.sub.6 alkyl, --C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b,
--(C.sub.0-C.sub.5 alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)OR.sup.a, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heterocyclyl optionally substituted by 1-3 substitutents
independently selected from halo, oxo, C.sub.1-C.sub.3 alkyl and
C(O)C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9
heteroaryl optionally substituted by 1-3 substitutents
independently selected from halo and C.sub.1-C.sub.3 alkyl,
--OCH.sub.2O--, --OCH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2CH.sub.2O-- and --OCH.sub.2(C.sub.4-C.sub.5
heterocyclyl). When R.sup.4 is alkyl, alkenyl or alkynyl, then the
alkyl, alkenyl and alkynyl are optionally substituted by 1-3
substituents independently selected from oxo, F, OR.sup.a and
NR.sup.aR.sup.b.
[0197] In an embodiment of Formula I, when R.sup.3 and R.sup.4 are
taken together with the nitrogen to which they are attached to form
a C.sub.1-C.sub.5 heterocyclyl, then the heterocyclyl is optionally
substituted by 1-3 substituents independently selected from oxo, F,
C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6 alkyl and
--C(O)OR.sup.a.
[0198] In an embodiment of Formula I, when R.sup.6 is C.sub.6 aryl,
C.sub.3-C.sub.8 cycloalkyl, C.sub.3-C.sub.5 heteroaryl and
C.sub.3-C.sub.5 heterocyclyl, then the aryl, cycloalkyl, heteroaryl
and heterocyclyl are optionally substituted by 1-3 substituents
independently selected from oxo, C.sub.1-C.sub.6 alkyl optionally
substituted by 1-3 substituents independently selected from oxo and
F, --CN, --CF.sub.3, halo, --OCH.sub.2O--, --OCH.sub.2CH.sub.2O--,
--OCH.sub.2CH.sub.2CH.sub.2O--, --C(O)C.sub.1-C.sub.6 alkyl,
--C(O)OR.sup.a, --C(O)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5
alkyl)NR.sup.aR.sup.b, --(C.sub.0-C.sub.5 alkyl)OR.sup.a,
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heterocyclyl optionally
substituted by 1-3 substituents independently selected from halo,
oxo, C.sub.1-C.sub.3 alkyl and C(O)C.sub.1-C.sub.3 alkyl,
--(C.sub.0-C.sub.5 alkyl)C.sub.1-C.sub.9 heteroaryl optionally
substituted by 1-3 substituents independently selected from halo
and C.sub.1-C.sub.3 alkyl, --(C.sub.0-C.sub.5 alkyl)phenyl
optionally substituted by 1-3 substituents independently selected
from halo, --CN, --CF.sub.3, --OR.sup.a and --NR.sup.aR.sup.b, and
--(C.sub.0-C.sub.5 alkyl)C.sub.3-C.sub.6 cycloalkyl optionally
substituted by 1-3 substituents independently selected from oxo,
C.sub.1-C.sub.3 alkyl and F. When R.sup.6 is alkyl, alkenyl or
alkynyl, then alkyl, alkenyl and alkynyl are optionally substituted
by 1-3 substituents independently selected from oxo, F, OR.sup.a
and NR.sup.aR.sup.b.
[0199] In an embodiment of Formula I, when R.sup.a and R.sup.b are
C.sub.1-C.sub.6 alkyl, C.sub.6 aryl, C.sub.3-C.sub.6 cycloalkyl or
C.sub.4-C.sub.5 heterocyclyl, then the alkyl, aryl, cycloalkyl and
heterocyclyl are optionally substituted by 1-3 substituents
independently selected from C.sub.1-C.sub.4 alkyl, (C.sub.0-C.sub.3
alkyl)OR.sup.c, oxo, halo, NR.sup.cR.sup.d and C.sub.4-C.sub.5
heterocyclyl. When R.sup.a and R.sup.b together with the atom to
which they are attached form a C.sub.1-C.sub.5 heterocyclyl, then
the heterocyclyl is optionally substituted by 1-3 substituents
independently selected from oxo, F, C.sub.1-C.sub.3 alkyl,
--C(O)C.sub.1-C.sub.6 alkyl and --C(O)OR.sup.a.
[0200] In an embodiment of Formula I, when R.sup.c and R.sup.d are
C.sub.1-C.sub.3 alkyl, C.sub.3-C.sub.6 cycloalkyl or phenyl, then
the alkyl, cycloalkyl and phenyl are optionally substituted by 1-3
substituents independently selected from halo, CH.sub.3OH,
NH.sub.2, C(O)O(C.sub.1-C.sub.6 alkyl) and C(O)NH(C.sub.1-C.sub.6
alkyl).
[0201] In one embodiment, R.sup.a and R.sup.b are independently H,
--CF.sub.3, --CHF.sub.2, --CH.sub.2F, C.sub.1-C.sub.6 alkyl,
phenyl, C.sub.3-C.sub.6 cycloalkyl or C.sub.4-C.sub.5 heterocyclyl;
wherein said alkyl, aryl and cycloalkyl are optionally substituted
by C.sub.1-C.sub.4 alkyl, --(C.sub.0-C.sub.3 alkyl)OR.sup.c, oxo,
halo, NR.sup.cR.sup.d or C.sub.4-C.sub.5 heterocyclyl. In one
embodiment, R.sup.a and R.sup.b together with the atom to which
they are attached form a C.sub.1-C.sub.5 heterocyclyl optionally
substituted by oxo, F, C.sub.1-C.sub.3 alkyl, --C(O)C.sub.1-C.sub.6
alkyl or --C(O)OR.sup.a. In one embodiment, R.sup.a and R.sup.b are
independently H or C.sub.1-C.sub.3 alkyl.
[0202] In one embodiment, R.sup.c and R.sup.d are independently H,
C.sub.1-C.sub.3 alkyl, C.sub.3-C.sub.6 cycloalkyl or phenyl,
wherein said alkyl, cycloalkyl and phenyl are optionally
substituted by halo, CH.sub.3OH, NH.sub.2, C(O)O(C.sub.1-C.sub.6
alkyl) or C(O)NH(C.sub.1-C.sub.6 alkyl). In one embodiment, R.sup.c
and R.sup.d are independently H or C.sub.1-C.sub.3 alkyl.
[0203] In one embodiment, R.sup.7 is H; R.sup.2 is
--NR.sup.3S(O).sub.2R.sup.4; R.sup.3 is H; and R.sup.4 is phenyl
optionally substituted by 1-3 R.sup.9. In one embodiment, R.sup.2
is --NR.sup.3S(O).sub.2R.sup.4; R.sup.3 is H; R.sup.4 is phenyl
optionally substituted by 1-3 substituents selected from
C.sub.1-C.sub.3 alkyl, --CF.sub.3 and halo; Z is --NR.sup.5R.sup.6;
R.sup.5 is H; and R.sup.6 is cyclopropyl, cyclobutyl, cyclopentyl,
cyclohexyl, cycloheptyl or cyclooctyl, and wherein R.sup.6 is
optionally substituted by 1 to 3 substituents selected from oxo,
halo and C.sub.1-C.sub.6 alkyl.
[0204] In one embodiment, R.sup.7 is H; R.sup.2 is
--NR.sup.3R.sup.4; R.sup.3 is H; R.sup.5 is H; R.sup.6 is pyrazolyl
optionally substituted by methyl and substituted by phenyl, wherein
said phenyl is optionally substituted by one or two methyl, halo,
methoxy, cyano, trifluoromethyl, hydroxy or trifluoromethoxy.
[0205] In one embodiment, a compound of Formula I is at least 10
fold or more selective in inhibiting JAK2 kinase activity over
inhibiting each of JAK1, JAK3 and Tyk-2 activity.
[0206] In one embodiment, a compound of the present invention is
about 5 fold or more selective in inhibiting JAK3 kinase activity
over inhibiting JAK2 kinase activity. In another embodiment, a
compound of the present invention is about 10 fold or more
selective in inhibiting JAK3 kinase activity over inhibiting JAK2
kinase activity.
[0207] The compounds of the present invention may contain
asymmetric or chiral centers, and, therefore, exist in different
stereoisomeric forms. It is intended that all stereoisomeric forms
of the compounds of the present invention, including but not
limited to: diastereomers, enantiomers, and atropisomers as well as
mixtures thereof such as racemic mixtures, form part of the present
invention. In addition, the present invention embraces all
geometric and positional isomers. For example, if a compound of the
present invention incorporates a double bond or a fused ring, both
the cis- and trans-forms, as well as mixtures, are embraced within
the scope of the invention. Both the single positional isomers and
mixture of positional isomers, e.g., resulting from the N-oxidation
of the pyrimidinyl and pyrrozolyl rings, or the E and Z forms of
compounds of the present invention (for example oxime moieties),
are also within the scope of the present invention.
[0208] In the structures shown herein, where the stereochemistry of
any particular chiral atom is not specified, then all stereoisomers
are contemplated and included as the compounds of the invention.
Where stereochemistry is specified by a solid wedge or dashed line
representing a particular configuration, then that stereoisomer is
so specified and defined.
[0209] The compounds of the present invention may exist in
unsolvated as well as solvated forms with pharmaceutically
acceptable solvents such as water, ethanol, and the like, and it is
intended that the invention, as defined by the claims, embrace both
solvated and unsolvated forms.
[0210] In an embodiment, compounds of the present invention may
exist in different tautomeric forms, and all such forms are
embraced within the scope of the invention, as defined by the
claims. The term "tautomer" or "tautomeric form" refers to
structural isomers of different energies which are interconvertible
via a low energy barrier. For example, proton tautomers (also known
as prototropic tautomers) include interconversions via migration of
a proton, such as keto-enol and imine-enamine isomerizations.
Valence tautomers include interconversions by reorganization of
some of the bonding electrons.
[0211] The present invention also embraces isotopically-labeled
compounds of the present invention, which are identical to those
recited herein, but for the fact that one or more atoms are
replaced by an atom having an atomic mass or mass number different
from the atomic mass or mass number usually found in nature. All
isotopes of any particular atom or element as specified are
contemplated within the scope of the invention. Exemplary isotopes
that can be incorporated into compounds of the present invention
include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus,
sulfur, fluorine, chlorine, and iodine, such as .sup.2H, .sup.3H,
.sup.11C, .sup.13C, .sup.14C, .sup.13N, .sup.15N, .sup.15O,
.sup.17O, .sup.18O, .sup.32P, .sup.33P, .sup.35S, .sup.18F,
.sup.36Cl, .sup.123I, and .sup.125I, respectively. Certain
isotopically-labeled compounds of the present invention (e.g.,
those labeled with .sup.3H and .sup.14C) are useful in compound
and/or substrate tissue distribution assays. Tritiated (i.e.,
.sup.3H) and carbon-14 (i.e., .sup.14C) isotopes are useful for
their ease of preparation and detectability. Further, substitution
with heavier isotopes such as deuterium (i.e., .sup.2H) may afford
certain therapeutic advantages resulting from greater metabolic
stability (e.g., increased in vivo half-life or reduced dosage
requirements) and hence may be preferred in some circumstances.
Positron emitting isotopes such as .sup.15O, .sup.13N, .sup.11C,
and .sup.18F are useful for positron emission tomography (PET)
studies to examine substrate receptor occupancy. Isotopically
labeled compounds of the present invention can generally be
prepared by following procedures analogous to those disclosed in
the Schemes and/or in the Examples herein below, by substituting an
isotopically labeled reagent for a non-isotopically labeled
reagent.
Synthesis of Pyrazolopyrimidine JAK Inhibitor Compounds
[0212] Compounds of the present invention may be synthesized by
synthetic routes described herein. In certain embodiments,
processes well-known in the chemical arts can be used, in addition
to, or in light of, the description contained herein. The starting
materials are generally available from commercial sources such as
Aldrich Chemicals (Milwaukee, Wis.) or are readily prepared using
methods well known to those skilled in the art (e.g., prepared by
methods generally described in Louis F. Fieser and Mary Fieser,
Reagents for Organic Synthesis, v. 1-19, Wiley, N.Y. (1967-1999
ed.), Beilsteins Handbuch der organischen Chemie, 4, Aufl. ed.
Springer-Verlag, Berlin, including supplements (also available via
the Beilstein online database)), or Comprehensive Heterocyclic
Chemistry, Editors Katrizky and Rees, Pergamon Press, 1984.
[0213] Compounds of the present invention may be prepared singly or
as compound libraries comprising at least 2, for example 5 to 1,000
compounds, or 10 to 100 compounds of the present invention.
Libraries of compounds of the present invention may be prepared by
a combinatorial `split and mix` approach or by multiple parallel
syntheses using either solution phase or solid phase chemistry, by
procedures known to those skilled in the art. Thus according to a
further aspect of the invention there is provided a compound
library comprising at least 2 compounds of the present invention,
enantiomers, diasteriomers or pharmaceutically acceptable salts
thereof.
[0214] For illustrative purposes, reaction scheme 1 depicted below
provides routes for synthesizing the compounds of the present
invention 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.
[0215] Compounds of the invention may be prepared from commercially
available starting materials using the general methods illustrated
herein.
##STR00015##
[0216] Compounds of Formula 1 can be synthesized as shown in
Reaction Scheme 1. For example, commercially available compounds
3-aminopyrazole and 1,3-dimethyluracil can be reacted together in
sodium ethoxide solution to give compound 2a, which can be
converted from the sodium salt form to 2b by treatment with dilute
acid. Compound 2b can be iodinated with N-iodosuccinimide (NIS) in
DMF to give compound 3. Carbonylation of compound 3 under basic
conditions (such as triethylamine (TEA)) with carbon monoxide and a
palladium catalyst in methanol gives methyl ester compound 4, which
can be hydrolyzed in aqueous lithium hydroxide to compound 5.
Heating compound 5 in a mixture of phosphorous oxychloride and
diisopropylethylamine (DIPEA) produces the dichlorinated compound
6, which is a common intermediate for the ultimate synthesis of
compounds 1a, 1b and 1c. Thus, compound 6 can be reacted with a
primary or secondary amine under mild conditions to give amide
compound 7 then under more vigorous conditions with a second amine
or an alkoxide to give compounds 1c or 1b respectively.
Alternatively, compound 6 can be reacted under basic conditions
with an alcohol to give esters of formula 8 which may then be
further reacted with a primary or secondary amine to give compounds
of formula 1a.
##STR00016##
[0217] Compounds of the present invention can be synthesized as
shown in Scheme 2. For example, commercially available benzoic
acids can be reacted with potassium 3-ethoxy-3-oxopropanoate in the
presence of carbonyldiimidazole (CDI) and magnesium chloride to
give .beta.-keto-ester 9 (where R is alkyl, for example ethyl).
Compound 9 can be heated with 1,1-dimethoxy-N,N-dimethylmethanamine
(N,N-dimethylformamideDMA) to give compound 10. Cyclization of
compound 10 with hydrazine in ethanol provides pyrazole compound
11. Alkylation of compound 11 with alkyl halides in the presence of
a base such as cesium carbonate affords a mixture of the
regioisomers 12a and 12b (wherein R.sup.11' is optionally
substituted alkyl). Hydrolysis of the ethyl ester, followed by
Curtius rearrangement utilizing diphenylphosphonic azide (dppa) and
t-butanol provides the t-butylcarbamate protected amino-pyrazole,
which is unmasked with HCl to give amino-pyrazole compounds 13a and
13b. The regioisomers 13a and 13b can be separated using silica
chromatography. Acylation of each regioisomer separately with
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (compound 6)
in the presence of triethylamine, followed by microwave assisted
amination provides compounds of Formula 1d and 1e.
##STR00017##
[0218] An alternative method for the synthesis of compounds of the
present invention is illustrated in Reaction Scheme 3. Alkylation
of di-tert-butyl iminodicarbonate with sodium hydride and various
a-bromoketones 14 generates compound 15. Compound 15 can be heated
with N,N-dimethylformamideDMA to give compound 16. Cyclization of
compound 16 with hydrazine in ethanol provides pyrazole compound
17. Acylation of each regioisomer separately with compound 6 in the
presence of triethylamine, followed by alkylation of the pyrazole
with alkyl halides provides compounds 18a and 18b (where R.sup.11'
is optionally substituted alkyl). Microwave assisted amination
yields compounds of Formula 1d and 1e.
##STR00018##
[0219] Reaction Scheme 4 illustrates the synthesis of compounds of
Formula 1f. Subjection of commercially available anilines to
diazotization and tin chloride mediated reduction provides compound
19. Condensation of compound 19 with 3-aminocrotonitrile in
ethanolic hydrochloric acid generates amino-pyrazole compound 20.
Acylation with compound 6 in the presence of triethylamine,
followed by microwave assisted amination provides compounds of
Formula 1f.
##STR00019##
[0220] An alternative method for the synthesis of compounds of
Formula 1 is described in Reaction Scheme 5. Alkylation of
potassium phthalimide with .alpha.-bromoketones generates compound
21. Condensation with N,N-dimethylformamideDMA yields compounds 22.
Compounds of Formula 22 may be cyclized with N-methylhydrazine to
provide the alkylated pyrazole 23. Acylation of compound 23 with
compound 6 in the presence of triethylamine, followed by microwave
assisted amination with substituted amines provides compounds of
Formula 1d.
##STR00020##
[0221] Compounds of Formula 1g can be synthesized as shown in
Scheme 6. Addition of primary sulfonamides to
5-chloropyrazolo[1,5-a]pyrimidine intermediate 7 mediated by a base
such as cesium carbonate in a polar aprotic solvent such as
1,2-dimethoxyethane affords compounds of Formula 1g.
##STR00021##
[0222] Compounds of Formula 1f can be synthesized as shown in
Scheme 7. Coupling of amino substituted R.sup.4 with
5-chloropyrazolo[1,5-a]pyrimidine intermediate 8 under palladium
mediated conditions with a ligand such as Xantphos arrives at
compound 24. Ester hydrolysis under basic conditions affords acid
25. Amide formation to arrive at compounds of formula 1f may occur
via addition of amines to the acid chloride of acid 25.
##STR00022##
[0223] Compounds of Formula 1i can be synthesized as shown in
Scheme 8. Bromination of aryl ketoester 9 (where R is alkyl, for
example ethyl) furnishes bromide 26. Alkylation of bromide 26 with
thioacetamide followed by cyclodehydration under thermal conditions
affords thiazole 27. Hydrolysis of ester 27 under basic conditions
followed by Curtius rearrangement using diphenyl phosphorylazide
provides carbamate 28 after trapping with an alcohol such as
t-butanol. Removal of the carbamate of 28 under acidic conditions
arrives at 5-aminothiazole 29, which upon coupling with acid
chloride 6 provides amide 30. Microwave assisted amination of
chloride 30 affords compounds of Formula 1i.
##STR00023##
[0224] Compounds of formula 1j can be synthesized as shown in
Scheme 9. Condensation of aryl ketoester 9 (where R is alkyl, for
example ethyl) with 1,1-dimethoxy-N,N-dimethylmethanamine furnishes
aminoester 31, which upon treatment with hydroxylamine and heat
affords isoxazole 32. Hydrolysis of ester 32 under acidic
conditions followed by Curtius rearrangement will provide carbamate
33 after trapping with an alcohol such as t-butanol. Removal of the
carbamate of 33 under acidic conditions arrives at 4-aminoisoxazole
34, which upon coupling with acid chloride 6 provides amide 35.
Microwave assisted amination of chloride 35 affords compounds of
Formula 1j.
##STR00024##
[0225] Compounds of Formula 1k can be synthesized according to
Scheme 10. Chlorination of aryl oxime 36 with N-chlorosuccinimide
provides a-chlorobenzaldoxime 37.
[0226] Treatment of a-chlorobenzaldoxime 37 with a tertiary amine
base such as triethylamine forms benzonitrile N-oxide that
participate in dipolar cycloaddition with 3-pyrrolidin-1-yl-acrylic
acid ester to afford isoxazole 38 (where R is alkyl, for example
ethyl). Hydrolysis of ester 38 under acidic conditions followed by
Curtius rearrangement using diphenyl phosphorylazide provides
carbamate 39 after trapping with an alcohol such as t-butanol.
Removal of the carbamate of 39 under acidic conditions arrives at
4-aminoisoxazole 40, which upon coupling with acid chloride 6
provides amide 41. Microwave assisted amination of chloride 41
affords compounds of Formula 1k.
##STR00025##
[0227] Compounds of Formula 11 can be synthesized according to
Scheme 11. Addition of arylhydrazine 42 to ethyl
2-cyano-3-ethoxyacrylate provides 5-amino-1-arylpyrazole 43.
Hydrolysis of ester 43 followed by decarboxylation of the resulting
acid occurs under acidic conditions to afford
5-amino-1-arylpyrazole 44, which upon coupling with acid chloride 6
provides amide 45. Microwave assisted amination of chloride 45
affords compounds of Formula 11.
[0228] In the preparation of compounds of the present invention,
protection of remote functionality (e.g., primary or secondary
amine) of intermediates may be necessary. The need for such
protection will vary depending on the nature of the remote
functionality and the conditions of the preparation methods.
Suitable amino-protecting groups (NH-Pg) include acetyl,
trifluoroacetyl, t-butoxycarbonyl (BOC), benzyloxycarbonyl (CBz)
and 9-fluorenylmethyleneoxycarbonyl (Fmoc). The need for such
protection is readily determined by one skilled in the art. For a
general description of protecting groups and their use, see T. W.
Greene, Protective Groups in Organic Synthesis, John Wiley &
Sons, New York, 1991.
[0229] Compounds of the invention may be prepared from readily
available starting materials using the general methods illustrated
herein.
Methods of Separation
[0230] In each of the exemplary Schemes it may be advantageous to
separate reaction products from one another and/or from starting
materials. The desired products of each step or series of steps is
separated and/or purified (hereinafter separated) to the desired
degree of homogeneity by the techniques common in the art.
Typically such separations involve multiphase extraction,
crystallization from a solvent or solvent mixture, distillation,
sublimation, or chromatography. Chromatography can involve any
number of methods including, for example: reverse-phase and normal
phase; size exclusion; ion exchange; high, medium, and low pressure
liquid chromatography methods and apparatus; small scale
analytical; simulated moving bed (SMB) and preparative thin or
thick layer chromatography, as well as techniques of small scale
thin layer and flash chromatography.
[0231] Another class of separation methods involves treatment of a
mixture with a reagent selected to bind to or render otherwise
separable a desired product, unreacted starting material, reaction
by product, or the like. Such reagents include adsorbents or
absorbents such as activated carbon, molecular sieves, ion exchange
media, or the like. Alternatively, the reagents can be acids in the
case of a basic material, bases in the case of an acidic material,
binding reagents such as antibodies, binding proteins, selective
chelators such as crown ethers, liquid/liquid ion extraction
reagents (LIX), or the like.
[0232] Selection of appropriate methods of separation depends on
the nature of the materials involved. For example, boiling point,
and molecular weight in distillation and sublimation, presence or
absence of polar functional groups in chromatography, stability of
materials in acidic and basic media in multiphase extraction, and
the like. One skilled in the art will apply techniques most likely
to achieve the desired separation.
[0233] Diastereomeric mixtures can be separated into their
individual diastereoisomers on the basis of their physical chemical
differences by methods well known to those skilled in the art, such
as by chromatography and/or fractional crystallization. Enantiomers
can be separated by converting the enantiomeric mixture into a
diastereomeric mixture by reaction with an appropriate optically
active compound (e.g., chiral auxiliary such as a chiral alcohol or
Mosher's acid chloride), separating the diastereoisomers and
converting (e.g., hydrolyzing) the individual diastereoisomers to
the corresponding pure enantiomers. Also, some of the compounds of
the present invention may be atropisomers (e.g., substituted
biaryls) and are considered as part of this invention. Enantiomers
can also be separated by use of a chiral HPLC column.
[0234] A single stereoisomer, e.g. an enantiomer, substantially
free of its stereoisomer may be obtained by resolution of the
racemic mixture using a method such as formation of diastereomers
using optically active resolving agents (Eliel, E. and Wilen, S.,
Stereochemistry of Organic Compounds, John Wiley & Sons, Inc.,
New York, 1994; Lochmuller, C. H., J. Chromatogr., 113(3):283-302
(1975)). Racemic mixtures of chiral compounds of the invention can
be separated and isolated by any suitable method, including: (1)
formation of ionic, diastereomeric salts with chiral compounds and
separation by fractional crystallization or other methods, (2)
formation of diastereomeric compounds with chiral derivatizing
reagents, separation of the diastereomers, and conversion to the
pure stereoisomers, and (3) separation of the substantially pure or
enriched stereoisomers directly under chiral conditions. See: Drug
Stereochemistry, Analytical Methods and Pharmacology, Irving W.
Wainer, Ed., Marcel Dekker, Inc., New York (1993).
[0235] Diastereomeric salts can be formed by reaction of
enantiomerically pure chiral bases such as brucine, quinine,
ephedrine, strychnine, .alpha.-methyl-.beta.-phenylethylamine
(amphetamine), and the like with asymmetric compounds bearing
acidic functionality, such as carboxylic acid and sulfonic acid.
The diastereomeric salts may be induced to separate by fractional
crystallization or ionic chromatography. For separation of the
optical isomers of amino compounds, addition of chiral carboxylic
or sulfonic acids, such as camphorsulfonic acid, tartaric acid,
mandelic acid, or lactic acid can result in formation of the
diastereomeric salts.
[0236] Alternatively, the substrate to be resolved is reacted with
one enantiomer of a chiral compound to form a diastereomeric pair
(Eliel, E. and Wilen, S., Stereochemistry of Organic Compounds,
John Wiley & Sons, Inc., New York, 1994, p. 322).
Diastereomeric compounds can be formed by reacting asymmetric
compounds with enantiomerically pure chiral derivatizing reagents,
such as menthyl derivatives, followed by separation of the
diastereomers and hydrolysis to yield the pure or enriched
enantiomer. A method of determining optical purity involves making
chiral esters, such as a menthyl ester, e.g. (-) menthyl
chloroformate in the presence of base, or Mosher ester,
.alpha.-methoxy-.alpha.-(trifluoromethyl)phenyl acetate (Jacob, J.
Org. Chem. 47:4165 (1982)), of the racemic mixture, and analyzing
the NMR spectrum for the presence of the two atropisomeric
enantiomers or diastereomers. Stable diastereomers of atropisomeric
compounds can be separated and isolated by normal- and
reverse-phase chromatography following methods for separation of
atropisomeric naphthyl-isoquinolines (WO 96/15111). By method (3),
a racemic mixture of two enantiomers can be separated by
chromatography using a chiral stationary phase (Chiral Liquid
Chromatography W. J. Lough, Ed., Chapman and Hall, New York,
(1989); Okamoto, J. of Chromatogr. 513:375-378 (1990)). Enriched or
purified enantiomers can be distinguished by methods used to
distinguish other chiral molecules with asymmetric carbon atoms,
such as optical rotation and circular dichroism.
[0237] Positional isomers, for example E and Z forms, of compounds
of the present invention, and intermediates for their synthesis,
may be observed by characterization methods such as NMR and
analytical HPLC. For certain compounds where the energy barrier for
interconversion is sufficiently high, the E and Z isomers may be
separated, for example by preparatory HPLC.
Biological Evaluation
[0238] Previous studies have shown that the isolated kinase domain
of human JAK2 phosphorylates peptide substrates in in vitro kinase
assays. Saltzman et al., Biochem. Biophys. Res. Commun. 246:627-633
(2004). The catalytically active kinase domain of human JAK2 was
purified from extracts of SF9 insect cells infected with a
recombinant baculovirus expression vector encoding the human JAK2
kinase domain (amino acid residues D812-G1132 according to the
numbering of GenBank sequence accession number NP_004963.1). The
activity of the JAK2 kinase domain can be measured by a number of
direct and indirect methods, including quantification of
phosphorylation of peptide substrates derived from the human JAK3
protein Saltzman et al., Biochem. Biophys. Res. Commun. 246:627-633
(2004). The activity of the JAK2 kinase domain was measured in
vitro by monitoring phosphorylation of JAK3 derived peptides using
the Caliper LabChip technology (see Examples).
Administration of Pyrazolopyrimidine Compounds
[0239] Another embodiment includes a method of treating or
lessening the severity of a disease or condition responsive to the
inhibition of JAK2 kinase activity in a patient. The method
includes the step of administering to a patient a therapeutically
effective amount of a compound of the present invention.
[0240] Another embodiment includes a method of treating or
lessening the severity of a disease or condition responsive to the
inhibition of JAK3 kinase activity in a patient. The method
includes the step of administering to a patient a therapeutically
effective amount of a compound of the present invention.
[0241] In one embodiment, a compound of the present invention is
administered to a patient in a therapeutically effective amount to
treat or lessen the severity of a disease or condition responsive
to the inhibition of JAK2 kinase activity, and said compound is at
least 10 fold or more selective in inhibiting JAK2 kinase activity
over inhibiting each of JAK1, JAK3 and Tyk-2 activity.
[0242] In one embodiment, the disease or condition is cancer,
stroke, diabetes, hepatomegaly, cardiovascular disease, multiple
sclerosis, Alzheimer's disease, cystic fibrosis, viral disease,
autoimmune diseases, atherosclerosis, restenosis, psoriasis,
allergic disorders, inflammation, neurological disorders, a
hormone-related disease, conditions associated with organ
transplantation, immunodeficiency disorders, destructive bone
disorders, proliferative disorders, infectious diseases, conditions
associated with cell death, thrombin-induced platelet aggregation,
liver disease, pathologic immune conditions involving T cell
activation, CNS disorders or a myeloproliferative disorder.
[0243] In one embodiment, the disease or condition is cancer.
[0244] In one embodiment, the disease is a myeloproliferative
disorder.
[0245] In one embodiment, the myeloproliferative disorder is
polycythemia vera, essential thrombocytosis, myelofibrosis or
chronic myelogenous leukemia (CML).
[0246] In one embodiment, the cancer is breast, ovary, cervix,
prostate, testis, penile, genitourinary tract, seminoma, esophagus,
larynx, gastric, stomach, gastrointestinal, skin, keratoacanthoma,
follicular carcinoma, melanoma, lung, small cell lung carcinoma,
non-small cell lung carcinoma (NSCLC), lung adenocarcinoma,
squamous carcinoma of the lung, colon, pancreas, thyroid,
papillary, bladder, liver, biliary passage, kidney, bone, myeloid
disorders, lymphoid disorders, hairy cells, buccal cavity and
pharynx (oral), lip, tongue, mouth, salivary gland, pharynx, small
intestine, colon, rectum, anal, renal, prostate, vulval, thyroid,
large intestine, endometrial, uterine, brain, central nervous
system, cancer of the peritoneum, hepatocellular cancer, head
cancer, neck cancer, Hodgkin's or leukemia.
[0247] In one embodiment, the cardiovascular disease is restenosis,
cardiomegaly, atherosclerosis, myocardial infarction or congestive
heart failure.
[0248] In one embodiment, the neurodegenerative disease is
Alzheimer's disease, Parkinson's disease, amyotrophic lateral
sclerosis, Huntington's disease, and cerebral ischemia, and
neurodegenerative disease caused by traumatic injury, glutamate
neurotoxicity or hypoxia.
[0249] In one embodiment, the inflammatory diseases is rheumatoid
arthritis, psoriasis, contact dermatitis or delayed
hypersensitivity reactions.
[0250] In one embodiment, the autoimmune disease is lupus or
multiple sclerosis.
[0251] A compound of the present invention may be administered by
any route appropriate to the disease or condition to be treated.
Suitable routes include oral, parenteral (including subcutaneous,
intramuscular, intravenous, intraarterial, intradermal, intrathecal
and epidural), transdermal, rectal, nasal, topical (including
buccal and sublingual), vaginal, intraperitoneal, intrapulmonary,
and intranasal. For local immunosuppressive treatment, the
compounds may be administered by intralesional administration,
including perfusing or otherwise contacting the graft with the
inhibitor before transplantation. It will be appreciated that the
preferred route may vary with for example the condition of the
recipient. Where the compound of the present invention is
administered orally, it may be formulated as a pill, capsule,
tablet, etc. with a pharmaceutically acceptable carrier or
excipient. Where the compound of the present invention is
administered parenterally, it may be formulated with a
pharmaceutically acceptable parenteral vehicle and in a unit dosage
injectable form, as detailed below.
[0252] A dose to treat human patients may range from about 10 mg to
about 1000 mg of a compound of the present invention. A typical
dose may be about 100 mg to about 300 mg of a compound of the
present invention. A dose may be administered once a day (QD),
twice per day (BID), or more frequently, depending on the
pharmacokinetic and pharmacodynamic properties, including
absorption, distribution, metabolism, and excretion of the
particular compound. In addition, toxicity factors may influence
the dosage and administration regimen. When administered orally,
the pill, capsule, or tablet may be ingested daily or less
frequently for a specified period of time. The regimen may be
repeated for a number of cycles of therapy.
[0253] Another embodiment includes a method of treating or
preventing cancer in a mammal in need of such treatment, wherein
the method comprises administering to said mammal a therapeutically
effective amount of a compound of Formulas I-Ia, a stereoisomer,
tautomer, prodrug or pharmaceutically acceptable salt thereof.
[0254] Another embodiment includes compounds of Formulas I-Ia, a
stereoisomer, tautomer, prodrug or pharmaceutically acceptable salt
thereof, for use in therapy.
[0255] Another embodiment includes the use of a compound of
Formulas I-Ia, a stereoisomer, tautomer, prodrug or
pharmaceutically acceptable salt thereof, in the manufacture of a
medicament for the treatment of a disease described herein (e.g.,
cancer or inflammatory disease).
Pharmaceutical Formulations of Pyrazolopyrimidine Compounds
[0256] Another embodiment includes a pharmaceutical composition
that includes a compound of the present invention and a
pharmaceutically acceptable carrier, adjuvant or vehicle.
[0257] In one embodiment, the pharmaceutical composition also
includes an additional therapeutic agent selected from an
anti-proliferative agent, an anti-inflammatory agent, an
immunomodulatory agent, a neurotropic factor, an agent for treating
cardiovascular disease, an agent for treating liver disease, an
anti-viral agent, an agent for treating blood disorders, an agent
for treating diabetes, or an agent for treating immunodeficiency
disorders.
[0258] In one embodiment, a compound of the present invention is
present in a pharmaceutical formulation in an amount to detectably
inhibit JAK2 kinase activity and a pharmaceutically acceptable
carrier, adjuvant or vehicle.
[0259] In one embodiment, a compound of the present invention is
present in a pharmaceutical formulation in an amount to detectably
inhibit JAK3 kinase activity and a pharmaceutically acceptable
carrier, adjuvant or vehicle.
[0260] In one embodiment, a compound of the present invention is
present in a pharmaceutical formulation in an amount to detectably
inhibit JAK2 kinase activity and is at least 10 fold or more
selective in inhibiting JAK2 kinase activity over inhibiting each
of JAK1, JAK3 and Tyk-2 activity.
[0261] A typical formulation is prepared by mixing a compound of
the present invention and a carrier, diluent or excipient. Suitable
carriers, diluents and excipients are well known to those skilled
in the art and include materials such as carbohydrates, waxes,
water soluble and/or swellable polymers, hydrophilic or hydrophobic
materials, gelatin, oils, solvents, water, and the like. The
particular carrier, diluent or excipient used will depend upon the
means and purpose for which the compound of the present invention
is being applied. Solvents are generally selected based on solvents
recognized by persons skilled in the art as safe (GRAS) to be
administered to a mammal. In general, safe solvents are non-toxic
aqueous solvents such as water and other non-toxic solvents that
are soluble or miscible in water. Suitable aqueous solvents include
water, ethanol, propylene glycol, polyethylene glycols (e.g.,
PEG400, PEG300), etc. and mixtures thereof. The formulations may
also include one or more buffers, stabilizing agents, surfactants,
wetting agents, lubricating agents, emulsifiers, suspending agents,
preservatives, antioxidants, opaquing agents, glidants, processing
aids, colorants, sweeteners, perfuming agents, flavoring agents and
other known additives to provide an elegant presentation of the
drug (i.e., a compound of the present invention or pharmaceutical
composition thereof) or aid in the manufacturing of the
pharmaceutical product (i.e., medicament).
[0262] The formulations may be prepared using conventional
dissolution and mixing procedures. For example, the bulk drug
substance (i.e., compound of the present invention or stabilized
form of the compound, such as a complex with a cyclodextrin
derivative or other known complexation agent) is dissolved in a
suitable solvent in the presence of one or more of the excipients
described above. The compound of the present invention is typically
formulated into pharmaceutical dosage forms to provide an easily
controllable dosage of the drug and to enable patient compliance
with the prescribed regimen.
[0263] The pharmaceutical composition (or formulation) for
application may be packaged in a variety of ways depending upon the
method used for administering the drug. Generally, an article for
distribution includes a container having deposited therein the
pharmaceutical formulation in an appropriate form. Suitable
containers are well-known to those skilled in the art and include
materials such as bottles (plastic and glass), sachets, ampoules,
plastic bags, metal cylinders, and the like. The container may also
include a tamper-proof assemblage to prevent indiscreet access to
the contents of the package. In addition, the container has
deposited thereon a label that describes the contents of the
container. The label may also include appropriate warnings.
[0264] Pharmaceutical, formulations of a compound of the present
invention may be prepared for various routes and types of
administration. A compound of the present invention having the
desired degree of purity is optionally mixed with pharmaceutically
acceptable diluents, carriers, excipients or stabilizers
(Remington's Pharmaceutical Sciences (1980) 16th edition, Osol, A.
Ed.), in the form of a lyophilized formulation, milled powder, or
an aqueous solution. Formulation may be conducted by mixing at
ambient temperature at the appropriate pH, and at the desired
degree of purity, with physiologically acceptable carriers, i.e.,
carriers that are non-toxic to recipients at the dosages and
concentrations employed. The pH of the formulation depends mainly
on the particular use and the concentration of compound, but may
range from about 3 to about 8. Formulation in an acetate buffer at
pH 5 is a suitable embodiment.
[0265] In an embodiment, the compound of the present invention for
use in a pharmaceutical composition is substantially sterile. The
compound ordinarily will be stored as a solid composition, although
lyophilized formulations or aqueous solutions are acceptable.
[0266] The pharmaceutical compositions of the invention will be
formulated, dosed, and administered in a fashion, i.e. amounts,
concentrations, schedules, course, vehicles, and route of
administration, consistent with good medical practice. Factors for
consideration in this context include the particular disorder being
treated, the particular mammal being treated, the clinical
condition of the individual patient, the cause of the disorder, the
site of delivery of the agent, the method of administration, the
scheduling of administration, and other factors known to medical
practitioners. The "therapeutically effective amount" of the
compound to be administered will be governed by such
considerations, and is the minimum amount necessary to prevent,
ameliorate, or treat the disorder. Such amount is preferably below
the amount that is toxic to the host.
[0267] As a general proposition, the initial pharmaceutically
effective amount of the inhibitor administered parenterally per
dose will be in the range of about 0.01-100 mg/kg, namely about 0.1
to 20 mg/kg of patient body weight per day, with the typical
initial range of compound used being 0.3 to 15 mg/kg/day.
[0268] Acceptable diluents, carriers, excipients, and stabilizers
are nontoxic to recipients at the dosages and concentrations
employed, and include buffers such as phosphate, citrate, and other
organic acids; antioxidants including ascorbic acid and methionine;
preservatives (such as octadecyldimethylbenzyl ammonium chloride;
hexamethonium chloride; benzalkonium chloride, benzethonium
chloride; phenol, butyl or benzyl alcohol; alkyl parabens such as
methyl or propyl paraben; catechol; resorcinol; cyclohexanol;
3-pentanol; and m-cresol); low molecular weight (less than about 10
residues) polypeptides; proteins, such as serum albumin, gelatin,
or immunoglobulins; hydrophilic polymers such as
polyvinylpyrrolidone; amino acids such as glycine, glutamine,
asparagine, histidine, arginine, or lysine; monosaccharides,
disaccharides, and other carbohydrates including glucose, mannose,
or dextrins; chelating agents such as EDTA; sugars such as sucrose,
mannitol, trehalose or sorbitol; salt-forming counter-ions such as
sodium; metal complexes (e.g. Zn-protein complexes); and/or
non-ionic surfactants such as TWEEN.TM., PLURONICS.TM. or
polyethylene glycol (PEG). The active pharmaceutical ingredients
may also be entrapped in microcapsules prepared, for example, by
coacervation techniques or by interfacial polymerization, for
example, hydroxymethylcellulose or gelatin-microcapsules and
poly-(methylmethacylate) microcapsules, respectively, in colloidal
drug delivery systems (for example, liposomes, albumin
microspheres, microemulsions, nano-particles and nanocapsules) or
in macroemulsions. Such techniques are disclosed in Remington's
Pharmaceutical Sciences 16th edition, Osol, A. Ed. (1980).
[0269] Sustained-release preparations may be prepared. Suitable
examples of sustained-release preparations include semipermeable
matrices of solid hydrophobic polymers containing a compound of the
present invention, which matrices are in the form of shaped
articles, e.g. films, or microcapsules. Examples of
sustained-release matrices include polyesters, hydrogels (for
example, poly(2-hydroxyethyl-methacrylate), or poly(vinylalcohol)),
polylactides, copolymers of L-glutamic acid and
gamma-ethyl-L-glutamate, non-degradable ethylene-vinyl acetate,
degradable lactic acid-glycolic acid copolymers such as the LUPRON
DEPOT.TM. (injectable microspheres composed of lactic acid-glycolic
acid copolymer and leuprolide acetate), and
poly-D-(-)-3-hydroxybutyric acid.
[0270] The formulations to be used for in vivo administration must
be sterile, which is readily accomplished by filtration through
sterile filtration membranes.
[0271] The formulations include those suitable for the
administration routes detailed herein. The formulations may
conveniently be presented in unit dosage form and may be prepared
by any of the methods well known in the art of pharmacy. Techniques
and formulations generally are found in Remington's Pharmaceutical
Sciences (Mack Publishing Co., Easton, Pa.). Such methods include
the step of bringing into association the active ingredient with
the carrier which constitutes one or more accessory ingredients. In
general the formulations are prepared by uniformly and intimately
bringing into association the active ingredient with liquid
carriers or finely divided solid carriers or both, and then, if
necessary, shaping the product.
[0272] Formulations of a compound of the present invention suitable
for oral administration may be prepared as discrete units such as
pills, capsules, cachets or tablets each containing a predetermined
amount of the compound of the present invention.
[0273] Compressed tablets may be prepared by compressing in a
suitable machine the active ingredient in a free-flowing form such
as a powder or granules, optionally mixed with a binder, lubricant,
inert diluent, preservative, surface active or dispersing agent.
Molded tablets may be made by molding in a suitable machine a
mixture of the powdered active ingredient moistened with an inert
liquid diluent. The tablets may optionally be coated or scored and
optionally are formulated so as to provide slow or controlled
release of the active ingredient therefrom.
[0274] Tablets, troches, lozenges, aqueous or oil suspensions,
dispersible powders or granules, emulsions, hard or soft capsules,
e.g. gelatin capsules, syrups or elixirs may be prepared for oral
use. Formulations of a compound of the present invention intended
for oral use may be prepared according to any method known to the
art for the manufacture of pharmaceutical compositions and such
compositions may contain one or more agents including sweetening
agents, flavoring agents, coloring agents and preserving agents, in
order to provide a palatable preparation. Tablets containing the
active ingredient in admixture with non-toxic pharmaceutically
acceptable excipient which are suitable for manufacture of tablets
are acceptable. These excipients may be, for example, inert
diluents, such as calcium or sodium carbonate, lactose, calcium or
sodium phosphate; granulating and disintegrating agents, such as
maize starch, or alginic acid; binding agents, such as starch,
gelatin or acacia; and lubricating agents, such as magnesium
stearate, stearic acid or talc. Tablets may be uncoated or may be
coated by known techniques including microencapsulation to delay
disintegration and adsorption in the gastrointestinal tract and
thereby provide a sustained action over a longer period. For
example, a time delay material such as glyceryl monostearate or
glyceryl distearate alone or with a wax may be employed.
[0275] For infections of the eye or other external tissues e.g.
mouth and skin, the formulations are preferably applied as a
topical ointment or cream containing the active ingredient(s) in an
amount of, for example, 0.075 to 20% w/w. When formulated in an
ointment, the active ingredients may be employed with either a
paraffinic or a water-miscible ointment base. Alternatively, the
active ingredients may be formulated in a cream with an
oil-in-water cream base.
[0276] If desired, the aqueous phase of the cream base may include
a polyhydric alcohol, i.e. an alcohol having two or more hydroxyl
groups such as propylene glycol, butane 1,3-diol, mannitol,
sorbitol, glycerol and polyethylene glycol (including PEG 400) and
mixtures thereof. The topical formulations may desirably include a
compound which enhances absorption or penetration of the active
ingredient through the skin or other affected areas. Examples of
such dermal penetration enhancers include dimethyl sulfoxide and
related analogs.
[0277] The oily phase of the emulsions of this invention may be
constituted from known ingredients in a known manner. While the
phase may comprise merely an emulsifier (otherwise known as an
emulgent), it desirably comprises a mixture of at least one
emulsifier with a fat or an oil or with both a fat and an oil.
Preferably, a hydrophilic emulsifier is included together with a
lipophilic emulsifier which acts as a stabilizer. It is also
preferred to include both an oil and a fat. Together, the
emulsifier(s) with or without stabilizer(s) make up the so-called
emulsifying wax, and the wax together with the oil and fat make up
the so-called emulsifying ointment base which forms the oily
dispersed phase of the cream formulations. Emulgents and emulsion
stabilizers suitable for use in the formulation of the invention
include Tween.RTM. 60, Span.RTM. 80, cetostearyl alcohol, benzyl
alcohol, myristyl alcohol, glyceryl mono-stearate and sodium lauryl
sulfate.
[0278] Aqueous suspensions of the invention contain the active
materials in admixture with excipients suitable for the manufacture
of aqueous suspensions. Such excipients include a suspending agent,
such as sodium carboxymethylcellulose, croscarmellose, povidone,
methylcellulose, hydroxypropyl methylcelluose, sodium alginate,
polyvinylpyrrolidone, gum tragacanth and gum acacia, and dispersing
or wetting agents such as a naturally occurring phosphatide (e.g.,
lecithin), a condensation product of an alkyl oxide (e.g. ethylene
oxide, propylene oxide) with a fatty acid (e.g., polyoxyethylene
stearate), a condensation product of ethylene oxide with a long
chain aliphatic alcohol (e.g., heptadecaethyleneoxycetanol), a
condensation product of ethylene oxide with a partial ester derived
from a fatty acid and a hexitol anhydride (e.g., polyoxyethylene
sorbitan monooleate). The aqueous suspension may also contain one
or more preservatives such as ethyl or n-propyl p-hydroxy-benzoate,
one or more coloring agents, one or more flavoring agents and one
or more sweetening agents, such as sucrose or saccharin.
[0279] The pharmaceutical composition of a compound of the present
invention may be in the form of a sterile injectable preparation,
such as a sterile injectable aqueous or oleaginous suspension. This
suspension may be formulated according to the known art using those
suitable dispersing or wetting agents and suspending agents which
have been mentioned above. The sterile injectable preparation may
also be a sterile injectable solution or suspension in a non-toxic
parenterally acceptable diluent or solvent, such as a solution in
1,3-butane-diol or prepared as a lyophilized powder. Among the
acceptable vehicles and solvents that may be employed are water,
Ringer's solution and isotonic sodium chloride solution. In
addition, sterile fixed oils may conventionally be employed as a
solvent or suspending medium. For this purpose any bland fixed oil
may be employed including synthetic mono- or diglycerides. In
addition, fatty acids such as oleic acid may likewise be used in
the preparation of injectables.
[0280] The amount of active ingredient that may be combined with
the carrier material to produce a single dosage form will vary
depending upon the host treated and the particular mode of
administration. For example, a time-release formulation intended
for oral administration to humans may contain approximately 1 to
1000 mg of active material compounded with an appropriate and
convenient amount of carrier material which may vary from about 5
to about 95% of the total compositions (weight:weight). The
pharmaceutical composition can be prepared to provide easily
measurable amounts for administration. For example, an aqueous
solution intended for intravenous infusion may contain from about 3
to 500 .mu.g of the active ingredient per milliliter of solution in
order that infusion of a suitable volume at a rate of about 30
mL/hr can occur.
[0281] Formulations suitable for parenteral administration include
aqueous and non-aqueous sterile injection solutions which may
contain anti-oxidants, buffers, bacteriostats and solutes which
render the formulation isotonic with the blood of the intended
recipient; and aqueous and non-aqueous sterile suspensions which
may include suspending agents and thickening agents.
[0282] Formulations suitable for topical administration to the eye
also include eye drops wherein the active ingredient is dissolved
or suspended in a suitable carrier, especially an aqueous solvent
for the active ingredient. The active ingredient is preferably
present in such formulations in a concentration of 0.5 to 20%,
advantageously 0.5 to 10% particularly about 1.5% w/w.
[0283] Formulations suitable for topical administration in the
mouth include lozenges comprising the active ingredient in a
flavored basis, usually sucrose and acacia or tragacanth; pastilles
comprising the active ingredient in an inert basis such as gelatin
and glycerin, or sucrose and acacia; and mouthwashes comprising the
active ingredient in a suitable liquid carrier.
[0284] Formulations for rectal administration may be presented as a
suppository with a suitable base comprising for example cocoa
butter or a salicylate.
[0285] Formulations suitable for intrapulmonary or nasal
administration have a particle size for example in the range of 0.1
to 500 microns (including particle sizes in a range between 0.1 and
500 microns in increments microns such as 0.5, 1, 30 microns, 35
microns, etc.), which is administered by rapid inhalation through
the nasal passage or by inhalation through the mouth so as to reach
the alveolar sacs. Suitable formulations include aqueous or oily
solutions of the active ingredient. Formulations suitable for
aerosol or dry powder administration may be prepared according to
conventional methods and may be delivered with other therapeutic
agents such as compounds heretofore used in the treatment or
prophylaxis of HIV infections as described below.
[0286] Formulations suitable for vaginal administration may be
presented as pessaries, tampons, creams, gels, pastes, foams or
spray formulations containing in addition to the active ingredient
such carriers as are known in the art to be appropriate.
[0287] The formulations may be packaged in unit-dose or multi-dose
containers, for example sealed ampoules and vials, and may be
stored in a freeze-dried (lyophilized) condition requiring only the
addition of the sterile liquid carrier, for example water, for
injection immediately prior to use. Extemporaneous injection
solutions and suspensions are prepared from sterile powders,
granules and tablets of the kind previously described. Preferred
unit dosage formulations are those containing a daily dose or unit
daily sub-dose, as herein above recited, or an appropriate fraction
thereof, of the active ingredient.
[0288] The invention further provides veterinary compositions
comprising at least one active ingredient as above defined together
with a veterinary carrier therefore. Veterinary carriers are
materials useful for the purpose of administering the composition
and may be solid, liquid or gaseous materials which are otherwise
inert or acceptable in the veterinary art and are compatible with
the active ingredient. These veterinary compositions may be
administered parenterally, orally or by any other desired
route.
Combination Therapy
[0289] A compound of the present invention may be combined in a
pharmaceutical combination formulation, or dosing regimen as
combination therapy, with a second compound that has
anti-hyperproliferative or chemotherapeutic properties, that is
useful for treating a disease or disorder responsive to the
inhibition of a JAK kinase, for example a hyperproliferative
disorder (e.g. cancer), or that is useful in treating another
disorder named herein. The second compound of the pharmaceutical
combination formulation or dosing regimen preferably has
complementary activities to a compound of the present invention of
the combination such that they do not adversely affect each other.
Such molecules are suitably present in combination in amounts that
are effective for the purpose intended.
[0290] Another embodiment, therefore, includes a method of treating
or lessening the severity of a disease or condition responsive to
the inhibition of JAK2 kinase activity in a patient, comprising
administering to said patient a therapeutically effective amount of
a compound of the present invention, and further comprising,
administering a second chemotherapeutic agent.
[0291] Another embodiment, therefore, includes a method of treating
or lessening the severity of a disease or condition responsive to
the inhibition of JAK3 kinase activity in a patient, comprising
administering to said patient a therapeutically effective amount of
a compound of the present invention, and further comprising,
administering a second chemotherapeutic agent.
[0292] The combination therapy may be administered as a
simultaneous or sequential regimen. When administered sequentially,
the combination may be administered in two or more administrations.
The combined administration includes coadministration, using
separate formulations or a single pharmaceutical formulation, and
consecutive administration in either order, wherein preferably
there is a time period while both (or all) active agents
simultaneously exert their biological activities.
[0293] Suitable dosages for any of the above coadministered agents
are those presently used and may be lowered due to the combined
action (synergy) of the newly identified agent and other
chemotherapeutic agents or treatments.
[0294] The combination therapy may provide "synergy" and prove
"synergistic", i.e. the effect achieved when the active ingredients
used together is greater than the sum of the effects that results
from using the compounds separately. A synergistic effect may be
attained when the active ingredients are: (1) co-formulated and
administered or delivered simultaneously in a combined, unit dosage
formulation; (2) delivered by alternation or in parallel as
separate formulations; or (3) by some other regimen. When delivered
in alternation therapy, a synergistic effect may be attained when
the compounds are administered or delivered sequentially, e.g. by
different injections in separate syringes. In general, during
alternation therapy, an effective dosage of each active ingredient
is administered sequentially, i.e. serially, whereas in combination
therapy, effective dosages of two or more active ingredients are
administered together.
Metabolites of the Pyrazolopyrimidine Compounds
[0295] Another embodiment includes in vivo metabolic products of an
administered compound of the present invention. Such products may
result for example from the oxidation, reduction, hydrolysis,
amidation, deamidation, esterification, deesterification, enzymatic
cleavage, and the like, of the administered compound.
[0296] Metabolite products typically are identified by preparing a
radiolabelled (e.g. .sup.14C or .sup.3H) isotope of a compound of
the invention, administering it parenterally in a detectable dose
(e.g. greater than about 0.5 mg/kg) to an animal such as rat,
mouse, guinea pig, monkey, or to man, allowing sufficient time for
metabolism to occur (typically about 30 seconds to 30 hours) and
isolating its conversion products from the urine, blood or other
biological samples. These products are easily isolated since they
are labeled (others are isolated by the use of antibodies capable
of binding epitopes surviving in the metabolite). The metabolite
structures are determined in conventional fashion, e.g. by MS,
LC/MS or NMR analysis. In general, analysis of metabolites is done
in the same way as conventional drug metabolism studies well-known
to those skilled in the art. The conversion products, so long as
they are not otherwise found in vivo, are useful in diagnostic
assays for therapeutic dosing of a compound of the present
invention.
Articles of Manufacture
[0297] Another embodiment includes a kit for treating a disease or
disorder responsive to the inhibition of a JAK kinase. The kit
includes: [0298] (a) a first pharmaceutical composition comprising
a compound of the present invention; and [0299] (b) instructions
for use.
[0300] In another embodiment, the kit further includes: [0301] (c)
a second pharmaceutical composition, which includes a
chemotherapeutic agent.
[0302] In one embodiment, the instructions include instructions for
the simultaneous, sequential or separate administration of said
first and second pharmaceutical compositions to a patient in need
thereof.
[0303] In one embodiment, the first and second compositions are
contained in separate containers.
[0304] In one embodiment, the first and second compositions are
contained in the same container.
[0305] Containers for use include, for example, bottles, vials,
syringes, blister pack, etc. The containers may be formed from a
variety of materials such as glass or plastic. The container
includes a compound of the present invention or formulation thereof
which is effective for treating the condition and may have a
sterile access port (for example the container may be an
intravenous solution bag or a vial having a stopper pierceable by a
hypodermic injection needle). The container includes a composition
comprising at least one compound of the present invention. The
label or package insert indicates that the composition is used for
treating the condition of choice, such as cancer. In one
embodiment, the label or package inserts indicates that the
composition comprising the compound of the present invention can be
used to treat a disorder. In addition, the label or package insert
may indicate that the patient to be treated is one having a
disorder characterized by overactive or irregular kinase activity.
The label or package insert may also indicate that the composition
can be used to treat other disorders.
[0306] The article of manufacture may comprise (a) a first
container with a compound of the present invention contained
therein; and (b) a second container with a second pharmaceutical
formulation contained therein, wherein the second pharmaceutical
formulation comprises a chemotherapeutic agent. The article of
manufacture in this embodiment of the invention may further
comprise a package insert indicating that the first and second
compounds can be used to treat patients at risk of stroke, thrombus
or thrombosis disorder. Alternatively, or additionally, the article
of manufacture may further comprise a second (or third) container
comprising a pharmaceutically-acceptable buffer, such as
bacteriostatic water for injection (BWFI), phosphate-buffered
saline, Ringer's solution and dextrose solution. It may further
include other materials desirable from a commercial and user
standpoint, including other buffers, diluents, filters, needles,
and syringes.
[0307] In an embodiment, the compounds of the present invention can
be used to control JAK protein kinases, tyrosine kinases,
additional serine/threonine kinases, and/or dual specificity
kinases. Thus, they are useful as pharmacological standards for use
in the development of new biological tests, assays and in the
search for new pharmacological agents.
[0308] Compounds of the present invention may be assayed for the
ability to modulate the activity of JAK protein kinases, tyrosine
kinases, additional serine/threonine kinases, and/or dual
specificity kinases in vitro and in vivo. In vitro assays include
biochemical and cell-based assays that determine inhibition of the
kinase activity. Alternate in vitro assays quantify the ability of
the compound of the present invention to bind to kinases and may be
measured either by radiolabelling the compound of the present
invention prior to binding, isolating the compound of the present
invention/kinase complex and determining the amount of radiolabel
bound, or by running a competition experiment where a compound of
the present invention is incubated with known radiolabeled ligands.
These and other useful in vitro assays are well known to those of
skill in the art.
[0309] In order to illustrate the invention, the following examples
are included. However, it is to be understood that these examples
do not limit the invention and are only meant to suggest a method
of practicing the invention. Persons skilled in the art will
recognize that the chemical reactions described may be readily
adapted to prepare other compounds of the present invention, and
alternative methods for preparing the compounds of the present
invention are within the scope of this invention. For example, the
synthesis of non-exemplified compounds according to the invention
may be successfully performed by modifications apparent to those
skilled in the art, e.g., by appropriately protecting interfering
groups, by utilizing other suitable reagents known in the art other
than those described, and/or by making routine modifications of
reaction conditions. Alternatively, other reactions disclosed
herein or known in the art will be recognized as having
applicability for preparing other compounds of the invention.
BIOLOGICAL EXAMPLES
[0310] The activity of the isolated kinase domain of JAK2 can be
measured by monitoring phosphorylation of peptide substrates
derived from the human JAK3 kinase in vitro Saltzman et al.,
Biochem. Biophys. Res. Commun. 246:627-633 (2004). The human JAK2
kinase domain was expressed with an N-terminal His6 tag followed by
a thrombin cleavage site using the baculovirus expression vector
system. The kinase domain expressed is defined as amino acid
residues D812-G1132 according to the numbering of GenBank sequence
accession number NP_004963.1. Recombinant DNA transfer vectors were
co-transfected with BakPAK6 linearized DNA (Clontech Laboratories,
Inc., Mountain View, Calif.) and the resulting viral stocks were
amplified using standard protocols. Protein was produced in SF9
cells grown to a cell density of 2E6/mL in ESF921 media (Expression
Systems LLC, Woodland, Calif.) and infected at an M.O.I. of 1 in
Wave bioreactors. The cells were harvested 72 hours post infection,
and active JAK2 enzyme was purified from the lysates of infected
cells by Ni-NTA (Qiagen, Valencia, Calif.) column chromatography
followed by Sephacryl S-200 (GE Healthcare, Piscataway, N.J.)
column chromatography.
[0311] Previous studies have shown that the isolated kinase domains
of human JAK1, JAK2, JAK3 or TYK2 phosphorylate peptide substrates
in in vitro kinase assays (Saltzman et al., Biochem. Biophys. Res.
Commun. 246:627-633 (2004)). The catalytically active kinase domain
of human JAK1, JAK2, JAK3 or TYK2 was purified from extracts of SF9
insect cells infected with a recombinant baculovirus expression
vector encoding the human JAK1, JAK2, JAK3 or TYK2 kinase domains
(JAK1 amino acid residues N852-D1154 according to the numbering of
GenBank sequence accession number P23458, JAK2 amino acid residues
D812-G1132 according to the numbering of GenBank sequence accession
number NP_004963.1; JAK3 amino acid residues S783-S1124 according
to the numbering of GenBank sequence accession number P52333, and
TYK2 amino acid residues N873-C1187 according to the numbering of
GenBank sequence accession number P29597). The activity of the
JAK1, JAK2, JAK3 or TYK2 kinase domains can be measured by a number
of direct and indirect methods, including quantification of
phosphorylation of peptide substrates derived from the human JAK3
protein (Saltzman et al., Biochem. Biophys. Res. Commun.
246:627-633 (2004)). The activity of the JAK1, JAK2, JAK3 or TYK2
kinase domains was measured in vitro by monitoring phosphorylation
of JAK3 derived peptides using the Caliper LabChip technology.
Example A
JAK2 Inhibition Assay Protocol
[0312] The activity of the isolated JAK2 kinase domain was measured
by monitoring phosphorylation of a peptide derived from JAK3
(Val-Ala-Leu-Val-Asp-Gly-Tyr-Phe-Arg-Leu-Thr-Thr) fluorescently
labeled on the N-terminus with 5-carboxyfluorescein using the
Caliper LabChip technology (Caliper Life Sciences, Hopkinton,
Mass.). To determine the inhibition constants (K.sub.i), compounds
were diluted serially in DMSO and added to 50 .mu.L kinase
reactions containing 0.2 nM purified JAK2 enzyme, 100 mM Hepes
pH7.2, 0.015% Brij-35, 1.5 .mu.M peptide substrate, 25 .mu.M ATP,
10 mM MgCl.sub.2, 4 mM DTT at a final DMSO concentration of 2%.
Reactions were incubated at 22.degree. C. in 384-well polypropylene
microtiter plates for 30 minutes and then stopped by addition of 25
.mu.L of an EDTA containing solution (100 mM Hepes pH 7.2, 0.015%
Brij-35, 150 mM EDTA), resulting in a final EDTA concentration of
50 mM. After termination of the kinase reaction, the proportion of
phosphorylated product was determined as a fraction of total
peptide substrate using the Caliper LabChip 3000 according to the
manufacturer's specifications. K.sub.i values were then determined
using the Morrison tight binding model. Morrison, J. F., Biochim.
Biophys. Acta. 185:269-296 (1969); William, J. W. and Morrison, J.
F., Meth. Enzymol., 63:437-467 (1979).
Example B
JAK1 and TYK2 Inhibition Assay Protocol
[0313] The activity of the isolated JAK1 or TYK2 kinase domain was
measured by monitoring phosphorylation of a peptide derived from
JAK3 (Val-Ala-Leu-Val-Asp-Gly-Tyr-Phe-Arg-Leu-Thr-Thr)
fluorescently labeled on the N-terminus with 5-carboxyfluorescein
using the Caliper LabChip technology (Caliper Life Sciences,
Hopkinton, Mass.). To determine inhibition constants (K.sub.i),
compounds were diluted serially in DMSO and added to 50 uL kinase
reactions containing 1.5 nM JAK1, 0.2 nM purified JAK2 or 1 nM
purified TYK2 enzyme, 100 mM Hepes pH7.2, 0.015% Brij-35, 1.5 uM
peptide substrate, 25 uM ATP, 10 mM MgCl2, 4 mM DTT at a final DMSO
concentration of 2%. Reactions were incubated at 22.degree. C. in
384-well polypropylene microtiter plates for 30 minutes and then
stopped by addition of 25 uL of an EDTA containing solution (100 mM
Hepes pH 7.2, 0.015% Brij-35, 150 mM EDTA), resulting in a final
EDTA concentration of 50 mM. After termination of the kinase
reaction, the proportion of phosphorylated product was determined
as a fraction of total peptide substrate using the Caliper LabChip
3000 according to the manufacturer's specifications. K.sub.i values
were then determined using the Morrison tight binding model
(Morrison, J. F., Biochim. Biophys. Acta. 185:269-296 (1969);
William, J. W. and Morrison, J. F., Meth. Enzymol., 63:437-467
(1979)).
Example C
JAK3 Inhibition Assay Protocol
[0314] The activity of the isolated JAK3 kinase domain was measured
by monitoring phosphorylation of a peptide derived from JAK3
(Leu-Pro-Leu-Asp-Lys-Asp-Tyr-Tyr-Val-Val-Arg) fluorescently labeled
on the N-terminus with 5-carboxyfluorescein using the Caliper
LabChip technology (Caliper Life Sciences, Hopkinton, Mass.). To
determine inhibition constants (K.sub.i), compounds were diluted
serially in DMSO and added to 50 uL kinase reactions containing 5
nM purified JAK3 enzyme, 100 mM Hepes pH7.2, 0.015% Brij-35, 1.5 uM
peptide substrate, 5 uM ATP, 10 mM MgCl2, 4 mM DTT at a final DMSO
concentration of 2%. Reactions were incubated at 22.degree. C. in
384-well polypropylene microtiter plates for 30 minutes and then
stopped by addition of 25 uL of an EDTA containing solution (100 mM
Hepes pH 7.2, 0.015% Brij-35, 150 mM EDTA), resulting in a final
EDTA concentration of 50 mM. After termination of the kinase
reaction, the proportion of phosphorylated product was determined
as a fraction of total peptide substrate using the Caliper LabChip
3000 according to the manufacturer's specifications. K.sub.i values
were then determined using the Morrison tight binding model
(Morrison, J. F., Biochim. Biophys. Acta. 185:269-296 (1969);
William, J. W. and Morrison, J. F., Meth. Enzymol., 63:437-467
(1979)).
Example D
Cell-Based Pharmacology Assays
[0315] The activities of compounds were determined in cell-based
assays that are designed to measure JAK2-dependent signaling or
proliferation. Compounds were serially diluted in DMSO and
incubated with Set-2 cells (German Collection of Microorganisms and
Cell Cultures (DSMZ); Braunschweig, Germany), which express the
JAK2V617F mutant protein, in 96-well microtiter plates for 1 hr at
37.degree. C. in RPMI medium at a final cell density of 100,000
cells per well and a final DMSO concentration of 0.57%.
Compound-mediated effects on STAT5 phosphorylation were then
measured in the lysates of incubated cells using the Meso Scale
Discovery (MSD) technology (Gaithersburg, Md.) according to the
manufacturer's protocol and EC50 values were determined.
Alternatively, serially diluted compounds were added to 384-well
microtiter plates in RPMI medium with 10% fetal bovine serum
(Invitrogen Corp.; Carlsbad, Calif.) at a final cell density of
2500 cells per well and a final DMSO concentration of 0.3% and
incubated at 37.degree. C. for 72 hours. Cell viability was then
determined using the CellTiter-Glo.RTM. Luminescent Cell Viability
Assay according to the manufacturer's protocol (Promega; Madison,
Wis.) and EC50 values were determined.
[0316] The activities of compounds were determined in cell-based
assays that are designed to measure TYK2-dependent signaling.
Compounds were serially diluted in DMSO and incubated with NK92
cells (American Type Culture Collection (ATCC); Manassas, Va.) in
96-well microtiter plates in RPMI medium at a final cell density of
100,000 cells per well and a final DMSO concentration of 0.57%.
Human recombinant IL-12 (R&D systems; Minneapolis, Minn.) was
then added at a final concentration of 10 ng/mL to the microtiter
plates containing the NK92 cells and compound and the plates were
incubated for 1 hr at 37.degree. C. Compound-mediated effects on
STAT4 phosphorylation were then measured in the lysates of
incubated cells using the Meso Scale Discovery (MSD) technology
(Gaithersburg, Md.) according to the manufacturer's protocol and
EC50 values were determined.
[0317] The activities of compounds were determined in cell-based
assays that are designed to measure JAK1 or JAK2-dependent
signaling. Compounds were serially diluted in DMSO and incubated
with TF-1 cells (American Type Culture Collection (ATCC); Manassas,
Va.) in 384-well microtiter plates in OptiMEM medium without phenol
red, 1% Charcoal/Dextran stripped FBS, 0.1 mM NEAA, 1 mM sodium
pyruvate (Invitrogen Corp.; Carlsbad, Calif.) at a final cell
density of 100,000 cells per well and a final DMSO concentration of
0.2%. Human recombinant IL-6 (R&D systems; Minneapolis, Minn.)
or EPO (Invitrogen Corp.; Carlsbad, Calif.) was then added at a
final concentration of 30 ng/mL or 10 Units/mL, respectively, to
the microtiter plates containing the TF-1 cells and compound and
the plates were incubated for 30 min at 37.degree. C.
Compound-mediated effects on STAT3 or STAT5 phosphorylation were
then measured in the lysates of cells incubated in the presence of
IL-6 or EPO, respectively, using the Meso Scale Discovery (MSD)
technology (Gaithersburg, Md.) according to the manufacturer's
protocol and EC50 values were determined.
PREPARATIVE EXAMPLES
[0318] In the examples described below, unless otherwise indicated
all temperatures are set forth in degrees Celsius. Reagents were
purchased from commercial suppliers such as Aldrich Chemical
Company, Lancaster, TCI or Maybridge, and were used without further
purification unless otherwise indicated.
[0319] The reactions set forth below were done generally under a
positive pressure of dry nitrogen (unless otherwise stated) in
anhydrous solvents.
[0320] Column chromatography was conducted on a Combiflash system
(Manufacturer: Teledyne Isco) having a silica gel column, by
traditional flash chromatography on silica or by reversed phase
HPLC chromatography on a C-18 column with acetonitrile/water
containing either 0.1% trifluoroacetic acid (TFA) or 0.1% formic
acid as the eluant. .sup.1H NMR spectra were recorded on a Bruker
instrument operating at 400 MHz or 500 MHz. .sup.1H NMR spectra
were obtained as CDCl.sub.3 or d.sub.6-DMSO solutions (reported in
ppm), using tetramethylsilane as the reference standard (0.00 ppm).
When peak multiplicities are reported, the following abbreviations
are used: s (singlet), d (doublet), t (triplet), m (multiplet), br
(broadened), dd (doublet of doublets), dt (doublet of triplets).
Coupling constants (J), when given, are reported in Hertz (Hz).
Example 1
##STR00026##
[0321]
5-(3-chlorobenzylamino)-N-cyclohexylpyrazolo[1,5-a]pyrimidine-3-car-
boxamide
##STR00027##
[0322] sodium pyrazolo[1,5-a]pyrimidin-5-olate
[0323] A mechanically stirred mixture of 3-aminopyrazole (9.38 g,
0.11 mM, 1.0 equiv), 1,3-dimethyluracil (14.7 g, 0.11 mM, 1.0
equiv) and 21% sodium ethoxide in ethanol (170 mL, 5.0 equiv) was
heated to reflux. Within minutes, a heavy precipitate formed. After
refluxing for 1 hour, 1,3-dimethyluracil could no longer be
detected by thin layer chromatography (tlc) (92:8 dichloromethane
(dichloromethane):MeOH). The reaction mixture was cooled, filtered,
washed with cold ethanol and vacuum dried to give 13.47 g (95%) of
sodium pyrazolo[1,5-a]pyrimidin-5-olate. LCMS (ESI) m+H=136.0;
.sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 8.0 (d, 1H), 7.43 (d,
1H), 5.65 (d, 1H), 5.37 (d, 1H).
##STR00028##
pyrazolo[1,5-a]pyrimidin-5(4H)-one
[0324] Sodium pyrazolo[1,5-a]pyrinidin-5-olate (13.47 g) was
dissolved in 500 mL of acetic acid and 100 mL of water, stirred 15
minutes then evaporated to dryness under vacuum. The residue was
suspended in 300 mL of 9:1 dichloromethane:methanol and vacuum
filtered through silica gel to remove sodium acetate. The silica
gel pad was washed with 700 mL of additional
dichloromethane:methanol solution. The combined
dichloromethane:methanol solution was concentrated to dryness. The
solid product was suspended in 1:1 hexane:dichloromethane and
filtered to yield 9.9 g (85%) pyrazolo[1,5-a]pyrimidin-5(4H)-one.
LCMS (ESI) m+H=136.0; .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.:
12.1 (s broad exchangeable, 1H), 8.47 (d, 1H, J=7.9), 7.75 (d, 1H,
J=1.9), 5.94 (d, 1H, J=7.5), 5.81 (d, 1H, J=1.7).
##STR00029##
3-iodopyrazolo[1,5-a]pyrimidin-5(4H)-one
[0325] Pyrazolo[1,5-a]pyrimidin-5(4H)-one (1.0 g, 7.4 mM, 1.0
equiv) and N-iodosuccinimide (1.67 g, 7.4 mM, 1.0 equiv) were
combined with 20 mL of DMF and warmed slightly. Within minutes a
heavy precipitate formed. The reaction mixture was stirred an
additional 1 h at ambient temperature then cooled on an icewater
bath and filtered. The collected solid was washed with 20 mL of
dichloromethane and air dried to give 1.66 g (86%) of
3-iodopyrazolo[1,5-a]pyrimidin-5(4H)-one. LCMS (ESI) m+H=262.2;
.sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 12.1 (s, 1H), 8.5 (d,
1H, J=7.6), 7.84 (s, 1H), 6.01 (d, 1H, J=7.1).
##STR00030##
methyl 5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate
[0326] A mixture of 3-iodopyrazolo[1,5-a]pyrimidin-5(4H)-one (1.5
g, 5.7 mM, 1.0 equiv), palladium acetate (0.27 g, 1.2 mM, 0.2
equiv), triethylamine (2.3 mL, 17 mM, 3.0 equiv) and 75 mL of
methanol was stirred, degassed twice under vacuum (with a nitrogen
break) then blanketed with carbon monoxide under a balloon. The
reaction mixture was heated to 55.degree. C. for 5 hours. TLC (95:5
dichloromethane:methanol) indicated complete reaction. The reaction
mixture was filtered through celite and concentrated under vacuum.
The residue was recrystallized from water and filtered to give 0.81
g (73%) of methyl
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate which was
97.6% pure by HPLC. .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.:
11.0 (br s, 1H), 8.58 (d, 1H), 8.19 (s, 1H), 6.19 (d, 1H), 3.80 (s,
3H).
##STR00031##
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[0327] A solution of methyl
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate (0.75 g
3.89 mM, 1.0 equiv), lithium hydroxide (0.466 g, 19.4 mM, 5.0
equiv) and 20 mL of water was stirred at ambient temperature for 3
hours. HPLC indicated complete reaction. Acetic acid (5 mL) was
added and the precipitated solid was collected by vacuum filtration
to give 0.65 g (93%)
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic acid.
.sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 12.5 (br s, 1H,), 11.3
(br s, 1H), 8.57 (d, 1H), 8.08 (d, 1H), 6.15 (d, 1H).
##STR00032##
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride
[0328] A mixture of
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic acid (371
mg, 2.1 mM, 1.0 equiv), phosphorus oxychloride (20 mL) and
N,N-diisopropylethylamine (1.2 mL, 6.9 mM, 3.3 equiv) was refluxed
for 2 hours. The reaction mixture was cooled and concentrated under
reduced pressure. The residue was taken up in dichloromethane and
concentrated again 3 times. The residue was partitioned between
water and dichloromethane. The dichloromethane layer was dried with
sodium sulfate, vacuum filtered through a bed of silica gel and
concentrated to give 390 mg (87%) of
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride as a yellow
solid which was used immediately without further purification.
##STR00033##
5-chloro-N-cyclohexylpyrazolo[1,5-a]pyrimidine-3-carboxamide
[0329] To a stirred solution of crude
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (200 mg, 0.9
mM, 1.0 equiv) in 15 mL of dichloromethane was added
cyclohexylamine (400 ul, 4.0 mM, 4 equiv). The reaction mixture was
stirred for 15 minutes then quenched with 0.4 mL of acetic acid.
The reaction mixture was concentrated under reduced pressure and
the residue partitioned between water and dichloromethane. The
dichloromethane phase was concentrated, and the crude product
purified by flash chromatography on silica gel (97:3
dichloromethane:methanol) to yield 310 mg (100%) of
5-chloro-N-cyclohexylpyrazolo[1,5-a]pyrimidine-3-carboxamide. LCMS
(ESI) m+H=279.1; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 8.66
(s, 1H), 8.65 (d, 1H), 7.47 (d (broad exchangeable) 1H), 6.93 (d,
1H), 4.08 (m, 1H), 2.02 (m, 2H), 1.80 (m, 2H), 1.62 (m, 1H), 1.40
(m, 5H).
##STR00034##
5-(3-chlorobenzylamino)-N-cyclohexylpyrazolo[1,5-a]pyrimidine-3-carboxami-
de
[0330] A solution of
5-chloro-N-cyclohexylpyrazolo[1,5-a]pyrimidine-3-carboxamide (28
mg, 0.09 mM, 1.0 equiv), 3-chlorobenzylamine (28 mg, 0.18 mM, 2.0
equiv), N,N-diisopropylethylamine (26 mg, 0.18 mM, 2.0 equiv) and 2
mL of ethanol were microwaved at 120.degree. C. for 10 minutes. TLC
(95:5 dichloromethane:methanol) showed reaction complete. The
reaction mixture was cooled, the crystalline product collected by
filtration, washed with cold ethanol and air dried to yield 29.7 mg
(77%) of
5-(3-chlorobenzylamino)-N-cyclohexylpyrazolo[1,5-a]pyrimidine-3-carboxami-
de. LCMS (ESI) m+H=384.2; .sup.1H NMR (400 MHz, DMSO-d.sub.6)
.delta.: 8.61 (overlapping d and t, 2H), 8.06 (s, 1H), 7.60 (d,
1H), 7.4-7.25 (m, 4H), 6.49 (d, 1H), 3.70 (m, 1H), 1.75-1.5 (m,
5H), 1.4-0.8 (m, 5H).
Example 2
##STR00035##
[0331]
5-amino-N-(1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-yl)pyrazolo[1,
5-a]pyrimidine-3-carboxamide
##STR00036##
[0332]
5-chloro-N-(1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-yl)pyrrazolo[1-
,5-a]pyrimidine-3-carboxamide
[0333] A solution of 5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl
chloride (150 mg, 0.69 mM, 1.0 equiv),
1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-amine (140 mg, 0.69 mM,
1.0 equiv, available from Enamine, Ltd, Cincinnati, Ohio
Cat#EN300-02447), N,N-diisopropylethylamine (0.18 mL, 1.0 mM, 1.0
equiv), and 15 mL of dichloromethane was stirred at ambient
temperature for 3 days. The reaction was partitioned between
dichloromethane and water. The dichloromethane phase was dried over
sodium sulfate and vacuum filtered through silica gel. The silica
gel pad was washed with 95:5 dichloromethane:methanol. The combined
filtrates were concentrated to give 250 mg (93%) of
5-chloro-N-(1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-yl)pyrazzol[1,5-a]py-
rimidine-3-carboxamide which was 74% pure by HPLC and used without
further purification. LCMS (ESI) m+H=387.2, (two chlorine isotope
pattern).
[0334] A mixture of 74% pure
5-chloro-N-(1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-yl)pyrazolo[1,5-a]py-
rimidine-3-carboxamide (55 mg, 0.14 mM, 1.0 equiv) and 3 mL of
concentrated ammonium hydroxide was sealed and heated in a
microwave reactor at 105.degree. C. for 30 minutes. The reaction
mixture was cooled and the precipitated product collected by
filtration to give 25 mg (48%) of
5-amino-N-(1-(3-chlorophenyl)-3-methyl-1H-pyrazol-5-yl)pyrazolo[1,5-a]-
pyrimidine-3-carboxamide which was purified by reverse phase
chromatography on C-18 with acetonitrile/water (0 to 60 gradient,
0.1% TFA) and lyophilized. LCMS (ESI) m+H=368.3 (one chlorine
isotope pattern), .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 9.94
(s, 1H), 8.66 (d, 1H), 8.20 (s, 1H) 7.67 (s, 1H), 7.57 (d, 1H),
7.49 (dd, 1H), 7.44 (d, 1H), 6.89 (br s, 1H), 6.40 (overlapping d
and s, 2H), 2.26 (s, 3H).
Example 3
##STR00037##
[0335]
N-isopropyl-5-(pyridin-3-ylmethoxy)pyrazolo[1,5-a]pyrimidine-3-carb
oxamide
##STR00038##
[0336]
5-chloro-N-isopropylpyrazolo[1,5-a]pyrimidine-3-carboxamide
[0337] A mixture of
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic acid (2.0
g, 10 mM, 1.0 equiv), 30 mL of phosphorus oxychloride (300 mM, 30
equiv) and N,N-diisopropylethylamine (8 mL, 40 mM, 4 equiv) was
heated with stirring to reflux for 2 hours. The reaction mixture
was cooled and concentrated under vacuum. The brown oil was taken
up in dichloromethane and isopropylamine added (3 mL, 30 mM, 3
equiv). The reaction mixture was stirred 5 minutes then partitioned
between ethyl acetate and water. The organic phase was washed with
brine, dried over sodium sulfate and vacuum filtered through a pad
of silica gel. The filtrate was concentrated and cooled and the
crystallized product collected by filtration to give 2.31 g (90%)
of 5-chloro-N-isopropylpyrazolo[1,5-a]pyrimidine-3-carboxamide.
LCMS (ESI) m+H=239.1 (mono chlorinated isotope pattern).sup.1H NMR
(400 MHz, DMSO-d.sub.6) .delta.: 9.33 (d, 1H), 8.60 (s, 1H), 7.47
(d, 1H), 7.36 (d, 1H), 4.09 (m, 1H), 1.20 (d, 6H).
[0338] To a degassed solution of 3-pyridylcarbinol (17.6 mg, 0.16
mM, 1.5 equiv) in 0.8 mL of DMF was added a one molar solution of
lithium hexamethyldisilazide (215 uL, 0.22 mM, 2.0 equiv). This
mixture was stirred for 10 minutes then added dropwise to a stirred
solution of
5-chloro-N-isopropylpyrazolo[1,5-a]pyrimidine-3-carboxamide (25.7
mg, 0.11 mM, 1.0 equiv) in one mL of DMF. The reaction mixture was
purified using reversed phase HPLC (5 to 30% acetonitrile/water,
0.1% formic acid) and the product lyophilized to give 22.7 mg (68%)
of
N-isopropyl-5-(pyridin-3-ylmethoxy)pyrazolo[1,5-a]pyrimidine-3-carboxamid-
e. LCMS (ESI) m+H=312.2, .sup.1H NMR (400 MHz, DMSO-d.sub.6)
.delta.: 9.09 (d, 1H), 8.76 (d, 1H), 8.59 (dd, 1H), 8.38 (s, 1H),
7.95 (d, 1H), 7.45 (dd 2H), 6.81 (d, 1H), 5.61 (s, 1H), 4.08 (m,
1H), 1.19 (d, 6H).
Example 4
##STR00039##
[0339] methyl
5-(3-fluorobenzylamino)pyrazolo[1,5-a]pyrimidine-3-carboxylate
##STR00040##
[0340] methyl 5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate
[0341] A mixture of
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic acid (151
mg, 0.84 mM, 1.0 equiv), phosphorus oxychloride (20 mL) and
N,N-diisopropylethylamine (440 uL, 2.5 mM, 3.0 equiv), were heated
under reflux for 2 hours. The reaction mixture was cooled to
ambient temperature overnight then concentrated under reduced
pressure. The residue was dissolved in 20 mL of methanol, stirred
for 30 minutes and concentrated under vacuum. The residue was
partitioned between ethyl acetate and water. The organic phase was
washed with brine, dried over sodium sulfate, filtered through a
pad of silica gel and concentrated to give 160 mg (90%) of methyl
5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate LCMS (ESI)
m+H=212.2, .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 9.34 (d,
1H), 8.68 (s, 1H), 7.42 (d, 1H), 3.83 (s, 3H).
[0342] A solution of methyl
5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate (240 mg, 1.1 mM,
1.0 equiv), 3-fluorobenzylamine (200 uL, 2.0 mM, 2.0 equiv), 30 mL
of ethanol and 400 uL of N,N-diisopropylethylamine (2.0 mM, 2
equiv) were combined and heated under reflux for 4 hours. The
mixture was concentrated and the product collected by filtration
and washed with cold ethanol to give 271 mg (80%) of methyl
5-(3-fluorobenzylamino)pyrazolo[1, 5-a]pyrimidine-3-carboxylate
LCMS (ESI) m+H=301.2, .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.:
8.56 (d, 1H), 8.41 (m 1H), 8.17 (s, 1H), 7.35 (m, 3H), 7.08 (td,
1H), 6.44 (d, 1H), 4.61 (d, 2H), 3.74 (s, 3H).
[0343] Examples 5-221 shown in Table 1 were prepared according to
the above-described methods.
TABLE-US-00001 TABLE 1 CMS, Ex # Structure Name M + H/1 5
##STR00041## benzyl 5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxylate 360.2 6 ##STR00042##
N-(2-ethoxyphenyl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 389.2 7 ##STR00043##
N-(2-methoxyphenyl)-5-(pyridin- 3-ylmethylamino)pyrazol[1,5-
a]pyrimidine-3-carboxamide 375.1 8 ##STR00044##
N-(2-phenoxyphenyl)-5-(pyridin- 3-ylmethylamino)pyrazol[1,5-
a]pyrimidine-3-carboxamide 437.1 9 ##STR00045##
N-cyclopropyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 309.2 10 ##STR00046##
N-cyclohexyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 351.2 11 ##STR00047##
N-isobutyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 325.2 12 ##STR00048##
N-(2-methoxyethyl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 327.2 13 ##STR00049##
N-tert-butyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 325.2 14 ##STR00050##
N-(3,3-dimethylbutyl)-5-(pyridin- 3-ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 353.5 15 ##STR00051##
N-isopropyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 311.2 16 ##STR00052## 5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 269.1 17
##STR00053## N-butyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 325.2 18 ##STR00054##
N-(4-methylcyclohexyl)-5- (pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 365.3 19 ##STR00055##
N-(4-methylcyclohexyl)-5- (pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine- 3-carboxamide 365.3 20 ##STR00056##
N-(2-methylcyclohexyl)-5- (pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 365.3 21 ##STR00057##
N-(cyclohexylmethyl)-5-(pyridin- 3-ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 365.3 22 ##STR00058##
N-(2,3-dimethylcyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.3 23
##STR00059## N-cyclobutyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 323.2 24 ##STR00060##
N-cyclopentyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 337.2 25 ##STR00061##
N-(pentan-3-yl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 339.2 26 ##STR00062##
N-(1-(hydroxymethyl)cyclopentyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 367.2 27
##STR00063## N-phenyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 345.2 28 ##STR00064##
5-(pyridin-3-ylmethylamino)-N-p- tolylpyrazolo[1,5-a]pyrimidine-3-
carboxamide 359.2 29 ##STR00065## N-(4-tert-butylcyclohexyl)-5-
(pyridin-3- ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
407.3 30 ##STR00066## N-octyl-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 381.3 31
##STR00067## N-cycloheptyl-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 365.3 32
##STR00068## N-(4-ethylcyclohexyl)-5-(pyridin-
3-ylmethylamino)pyrazol[1,5- a]pyrimidine-3-carboxamide 379.3 33
##STR00069## 5-(pyridin-3-ylmethylamino)-N- (3,3,5-
trimethylcyclohexyl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 393.3
34 ##STR00070## N-(1-hydroxy-2-methylpropan-2- yl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 341.2 35
##STR00071## N-(2-hydroxyethyl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 313.2 36
##STR00072## 5-(pyridin-3-ylmethylamino)-N- ((tetrahydrofuran-2-
yl)methyl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 353.2 37
##STR00073## N-(2-hydroxycyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 367.3 38
##STR00074## N-(pyridin-2-yl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 346.2 39
##STR00075## N-(pyridin-3-yl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 346.3 40
##STR00076## N-((1S,2S,4R)- bicyclo[2.2.1]heptan-2-yl)-5-
(pyridin-3- ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
363.2 41 ##STR00077## N-(bicyclo[2.2.1]heptan-2-yl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 363.2 42
##STR00078## N-cyclohexyl-5- methoxypyrazolo[1,5-
a]pyrimidine-3-carboxamide 275.2 43 ##STR00079##
N-cyclooctyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 379.3 44 ##STR00080## benzyl
5-(benzyloxy)pyrazolo[1,5- a]pyrimidine-3-carboxylate 360.2 45
##STR00081## 5-(pyridin-3-ylmethylamino)-N- (1,3,3-
trimethylbicyclo[2.2.1]heptan-2- yl)pyrazolo[1,5-a]pyrimidine-3-
carboxamide 405.4 46 ##STR00082## N-cyclohexyl-5-(pyridin-3-
ylmethoxy)pyrazolo[1,5- a]pyrimidine-3-carboxamide 352.2 47
##STR00083## N-(4-ethylcyclohexyl)-5-(pyridin-
3-ylmethoxy)pyrazolo[1,5- a]pyrimidine-3-carboxamide 380.4 48
##STR00084## 5-(pyridin-3-ylmethylamino)-N- ((1R,2R,4R)-1,7,7-
trimethylbicyclo[2.2.1]heptan-2- yl)pyrazolo[1,5-a]pyrimidine-3-
carboxamide 405.3 49 ##STR00085## N-(4-ethylcyclohexyl)-5-(pyridin-
3-ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.4 50
##STR00086## (R)-N-(1-cyclohexylethyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.3 51
##STR00087## (S)-N-(1-cyclohexylethyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.4 52
##STR00088## N-(4-ethylcyclohexyl)-5- methoxypyrazolo[1,5-
a]pyrimidine-3-carboxamide 303.2 53 ##STR00089##
N-(piperidin-1-yl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 352.2 54 ##STR00090##
N-(4-ethylphenyl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 373.2 55 ##STR00091##
N-(4-cyclohexylphenyl)-5- (pyridin-3- ylmethylaminolpyrazolo[1,5-
a]pyrimidine-3-carboxamide 427.2 56 ##STR00092##
N-((1R,4R)-4-hydroxycyclohexyl)- 5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 367.2 57
##STR00093## methyl 4-(5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3- carboxamido)benzoate 403.2 58 ##STR00094##
(1R,4R)-4-(5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3- carboxamido)cyclohexanecarboxylic acid 395.2 59
##STR00095## (1R,4R)-4-(5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3- carboxamido)cyclohexanecarboxylic acid 395.2 60
##STR00096## N-(4-carbamoylphenyl)-5-(pyridin-
3-ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 388.2 61
##STR00097## N-(cycloheptylmethyl)-5-(pyridin-
3-ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.3 62
##STR00098## N-((1S)-3-methylcyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 365.3 63
##STR00099## N-((1S)-3-methylcyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 365.3 64
##STR00100## 5-(2-chlorobenzylamino)-N- cyclohexylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 384.2 65 ##STR00101##
5-(3-chlorobenzylamino)-N- cyclohexylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 384.2 66 ##STR00102##
5-(4-chlorobenzylamino)-N- cyclohexylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 384.2 67 ##STR00103## 4-(5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3- carboxamido)benzoic
acid 389.2 68 ##STR00104## 5-(benzylamino)-N-
cyclohexylpyrazolo[1,5- a]pyrimidine-3-carboxamide 350.2 69
##STR00105## N-cyclohexyl-5-(2- hydroxyethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 304.2 70 ##STR00106## N-cyclohexyl-5-
(phenylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 336.2 71
##STR00107## N-(3-carbamoylphenyl)-5-(pyridin-
3-ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 388.2 72
##STR00108## N-(4-fluorophenyl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 363.2 73
##STR00109## N-(4-methylbenzyl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 373.2 74
##STR00110## N-benzyl-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 359.2 75 ##STR00111##
N-(4-chlorophenyl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 379.2 76 ##STR00112## N-cyclohexyl-5-
(ethylamino)pyrazolo[1,5- pyrimidine-3-carboxamide 288.2 77
##STR00113## N-(3-hydroxyphenyl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 361.2 78
##STR00114## N-(4-hydroxyphenyl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 361.2 79
##STR00115## N-(4-methoxyphenyl)-5-(pyridin-
3-ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 375.2 80
##STR00116## N-((1R,4R)-4-((4- aminocyclohexyl)methyl)cyclohexyl)-
5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 462.3 81 ##STR00117##
(1S,4S)-4-((5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3- carboxamido)methyl)cyclohexanecarboxylic acid 409.2
82 ##STR00118## N-(3-methoxyphenyl)-5-(pyridin-
3-ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 375.2 83
##STR00119## N-(2-ethoxyphenyl)-5- methoxypyrazolo[1,5-
a]pyrimidine-3-carboxamide 313.2 84 ##STR00120##
N-(4-tert-pentylcyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 421.3 85
##STR00121## N-(4,4-dimethylcyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.3
86 ##STR00122## (1R,4R)-methyl 4-(5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-
carboxamido)cyclohexanecarboxylate 409.2 87 ##STR00123##
(1S,4S)-methyl 4-(5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3- carboxamido)cyclohexanecarboxylate 409.4 88
##STR00124## N-((3- (aminomethyl)cyclohexyl)methyl)- 5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 394.3 89
##STR00125## N-((4- (aminomethyl)cyclohexyl)methyl)- 5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 394.0 90
##STR00126## N-(3-fluorophenyl)-5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 363.2 91
##STR00127## N-((1R,4R)-4-(morpholine-4-
carbonyl)cyclohexyl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 464.2 92 ##STR00128## N-((1R,4R)-4-
(cyclohexylcarbamoyl)cyclohexyl)- 5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 476.3 93
##STR00129## N-(1-(3-chlorophenyl)-3-methyl- 1H-pyrazol-5-yl)-5-
(ethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 396.2 94
##STR00130## tert-butyl 4-(5-(pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-
carboxamido)piperidine-1- carboxylate 452.3 95 ##STR00131##
N-(1-(3-chlorophenyl)-3-methyl- 1H-pyrazol-5-yl)-5-
methoxypyrazolo[1,5- a]pyrimidine-3-carboxamide 383.2 96
##STR00132## N-(1-(3-chlorophenyl)-3-methyl- 1H-pyrazol-5-yl)-5-
(methylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 382.2 97
##STR00133## 5-amino-N-(1-(3-chlorophenyl)-3- methyl-1H-pyrazol-5-
yl)pyrazolo[1,5-a]pyrimidine-3- carboxamide 368.2 98 ##STR00134##
N-(piperidin-4-yl)-5-(pyridin-3- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 352.2 99 ##STR00135##
(R)-N-(piperidin-3-yl)-5-(pyridin- 3-ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 352.2 100 ##STR00136## N-cyclohexyl-5-
(cyclohexylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 342.3 101
##STR00137## N-cyclohexyl-5- (phenethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 364.3 102 ##STR00138##
N-(4-pentylcyclohexyl)-5-(pyridin- 3-ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 421.3 103 ##STR00139##
N-(4-pentylcyclohexyl)-5-(pyridin- 3-ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 421.3 104 ##STR00140## N-cyclohexyl-5-
(cyclohexylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
356.3 105 ##STR00141## N-cyclohexyl-5-(4-
methylbenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 364.3
106 ##STR00142## N-cyclohexyl-5-(4- fluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 368.2 107 ##STR00143##
N-cyclohexyl-5-(2- fluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 368.2 108 ##STR00144##
N-cyclohexyl-5-(3- fluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 368.2 109 ##STR00145## tert-butyl 4-((3-
(cyclohexylcarbamoyl)pyrazolo[1,5- a]pyrimidin-5-
ylamino)methyl)piperidine-1- calboxylate 457.3 110 ##STR00146##
N-cyclohexyl-5-(2,4- difluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 386.2 111 ##STR00147##
N-cyclohexyl-5-(3- methoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 380.3 112 ##STR00148##
N-cyclohexyl-5-(3- (trifluoromethyl)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 418.2 113 ##STR00149##
N-cyclohexyl-5-(piperidin-4- ylmethylamino)pyrazolo[1,5-
a]pyridine-3-carboxamide 357.3 114 ##STR00150## N-cyclohexyl-5-(3-
hydroxybenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 366.2
115 ##STR00151## N-cyclohexyl-5-(2,5-
difluorobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 386.2
116 ##STR00152## N-cyclohexyl-5-(3,4-
difluorobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 386.2
117 ##STR00153## 5-(3-chlorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 344.2 118 ##STR00154##
N-cyclohexyl-5-(3,4- dichlorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 418.1 119 ##STR00155##
N-cyclohexyl-5-(2,3- dichlorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 418.1 120 ##STR00156##
N-cyclohexyl-5-(2,3- dimethoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 410.2 121 ##STR00157##
N-cyclohexyl-5-(3,4- dimethoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 410.2 122 ##STR00158##
N-cyclohexyl-5-(4-hydroxy-3- methoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 396.2 123 ##STR00159##
N-cyclohexyl-5-(2- hydroxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 366.2 124 ##STR00160##
5-(benzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 310.2 125 ##STR00161##
N-cyclohexyl-5-(2- methoxyphenylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 366.2 126 ##STR00162##
N-cyclohexyl-5-(3,5- dimethoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 410.2 127 ##STR00163##
N-cyclohexyl-5-(2- (difluoromethoxy)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 416.2 128 ##STR00164##
N-cyclohexyl-5-(3-(4- methylpiperazin-1- yl)benzylamino)pyrazolo
a]pyrimidine-3-carboxamide 448.3 129 ##STR00165##
N-cyclohexyl-5-(3- (morpholinomethyl)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 449.3 130 ##STR00166##
5-(benzo[d][1,3]dioxol-5- ylmethylamino)-N- cyclohexylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 394.2 131 ##STR00167##
N-cyclohexyl-5-(3-(pyrrolidin-1- yl)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 419.3 132 ##STR00168##
5-(2-chlorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 344.2 133 ##STR00169##
5-(4-chlorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 344.2 134 ##STR00170##
N-cyclohexyl-5-(3-(furan-2- yl)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 416.2 135 ##STR00171##
N-cyclohexyl-5-(3,5- difluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 386.2 136 ##STR00172##
N-cyclohexyl-5-(2- (trifluoromethoxy)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 434.2 137 ##STR00173##
N-cyclohexyl-5-(3,5- dichlorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 418.1 138 ##STR00174##
N-cyclohexyl-5-(2,6- difluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 386.2 139 ##STR00175##
N-cyclohexyl-5-(2,3- difluorobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 386.2 140 ##STR00176## N-isopropyl-5-
(phenylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 296.2 141
##STR00177## 5-(3-fluorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 328.2 142 ##STR00178##
N-cyclohexyl-5-(2- ethoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 394.3 143 ##STR00179##
N-cyclohexyl-5-((tetrahydro-2H- pyran-4-
yl)methylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 358.3 144
##STR00180## N-cyclohexyl-5-((3,4-dihydro-2H-
benzo[b][1,4]dioxepin-6- yl)methylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 422.2 145 ##STR00181##
N-cyclohexyl-5-(2-(2- morpholinoethoxy)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 479.3 146 ##STR00182##
N-cyclohexyl-5-(2- molpholinobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 435.3 147 ##STR00183##
N-cyclohexyl-5-(2-(4- methylpiperazin-1- yl)benzylamino)pyrazolo
a]pyrimidine-3-carboxamide 448.3 148 ##STR00184##
5-(3,5-difluorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 346.2 149 ##STR00185##
5-(3-((1H-pyrazol-1- yl)methyl)benzylamino)-N-
cyclohexylpyrazolo[1,5- a]pyrimidine-3-carboxamide 430.2 150
##STR00186## 5-((3- (aminomethyl)cyclohexyl)methylamino)-
N-cyclohexylpyrazolo[1,5- a]pyrimidine-3-carboxamide 385.2 151
##STR00187## 5-(2-(1H-pyrazol-1- yl)benzylamino)-N-
cyclohexylpyrazolo[1,5- a]pyrimidine-3-carboxamide 416.2 152
##STR00188## N-(4,4-difluorocyclohexyl)-5- (pyridin-3-
ylmethylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 387.1 153
##STR00189## N-cyclohexyl-5-(2,5-
dimethoxybenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 410.2
154 ##STR00190## N-cyclohexyl-5-(3-
(dimethylamino)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
393.2 155 ##STR00191## 5-(cycloheptylmethylamino)-N-
cyclohexylpyrazolo[1,5- a]pyrimidine-3-carboxamide 370.2 156
##STR00192## N-cyclohexyl-5-(3-((4- methylpiperidin-1-
yl)methyl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
461.3 157 ##STR00193## 5-(2,5-difluorobenzylamino)-N-
isopropylpyrazolo[1,5- a]pyrimidine-3-carboxamide 346.1 158
##STR00194## N-isopropyl-5-(2- methoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 340.2 159 ##STR00195##
N-cyclohexyl-5-(2-(2-methyl-1H- imidazol-1-
yl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 430.2 160
##STR00196## N-cyclohexyl-5-((tetrahydrofuran-
2-yl)methylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 344.2 161
##STR00197## N-isopropyl-5-(3-
(morpholinomethyl)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 409.2 162 ##STR00198##
N-isopropyl-5-(3-(4- methylpiperazin-1-
yl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 408.3 163
##STR00199## 5-(3-(furan-2-yl)benzylamino)-N-
isopropylpyrazolo[1,5- a]pyrimidine-3-carboxamide 376.2 164
##STR00200## 5-(3-aminobenzylamino)-N- cyclohexylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 365.2 165 ##STR00201##
N-isopropyl-5-(3-(pyrrolidin-1-
yl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 379.2 166
##STR00202## N-isopropyl-5-(2-(4- methylpiperazin-1-
yl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 408.2 167
##STR00203## N-isopropyl-5-((1-methylpiperidin-
2-yl)methylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 331.2 168
##STR00204## N-isopropyl-5-(3- methoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 340.1 169 ##STR00205##
N-isopropyl-5-(pyridin-2- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 311.1 170 ##STR00206## methyl 5-(3-
fluorobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxylate 301.1
171 ##STR00207## 5-(1H-pyrazol-5-ylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 286.1 172 ##STR00208##
5-(3-fluorobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
286.1 173 ##STR00209## 5-(3,5-difluorobenzylamino)-N-(4,4-
difluorocyclohexyl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 422.2
174 ##STR00210## N-tert-butyl-5-(3,5-
difluorobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 360.2
175 ##STR00211## N-tert-butyl-5-(3,5-
difluorobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 356.2
176 ##STR00212## 5-(benzylamino)-N-(1-tert-butyl-3-
methyl-1H-pyrazol-5- yl)pyrazolo[1,5-a]pyrimidine-3- carboxamide
404.2 177 ##STR00213## 5-(2-fluorobenzylamino)-N-
isopropylpyrazolo[1,5- a]pyrimidine-3-carboxamide 328.1 178
##STR00214## 5-(2,6-dimethoxybenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 370.2 179 ##STR00215##
5-(2,5-dimethoxybenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 370.2 180 ##STR00216##
5-(2,3-dimethoxybenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 370.2 181 ##STR00217##
5-(2,3-difluorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 346.1 182 ##STR00218##
5-(3,5-dichlorobenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 378.1 183 ##STR00219##
5-(2-ethoxybenzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 354.2 184 ##STR00220## N-isopropyl-5-(2-
morpholinobenzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
395.2 185 ##STR00221## 5-(3-fluorophenylamino)-N-
isopropylpyrazolo[1,5- a]pyrimidine-3-carboxamide 314.1 186
##STR00222## N-isopropyl-5-(2- methoxyphenylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 326.1 187 ##STR00223## 5-(2-(2-
(dimethylamino)ethoxy)benzylamino)- N-isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 397.2 188 ##STR00224##
N-isopropyl-5-(3-((4- methylpiperidin-1-
yl)methyl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide
421.2 189 ##STR00225## 5-(3-((1H-pyrazol-1-
yl)methyl)benzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 390.2 190 ##STR00226## N-isopropyl-5-(2-
(trifluoromethoxy)benzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 394.1 191 ##STR00227## 5-(2-
(dimethylamino)benzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 353.2 192 ##STR00228##
5-((3,4-dihydro-2H- benzo[b][1,4]dioxepin-6- yl)methylamino)-N-
isopropylpyrazolo[1,5- a]pyrimidine-3-carboxamide 382.2 193
##STR00229## methyl 3-((3- (isopropylcarbamoyl)pyrazolo[1,5-
a]pyrimidin-5- ylamino)methyl)benzoate 368.2 194 ##STR00230##
5-((2,3-dihydrobenzo[b][1,4]dioxin-5- yl)methylamino)-N-
isopropylpyrazolo[1,5- a]pyrimidine-3-carboxamide 368.2 195
##STR00231## N-isopropyl-5-(3-(piperidin-1-
yl)benzylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 393.2 196
##STR00232## N-isopropyl-5-(3- morpholinobenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 395.2 197 ##STR00233##
N-isopropyl-5-(pyridin-3- ylmethoxy)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 312.2 198 ##STR00234##
5-(3-(dimethylamino)benzylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 353.2 199 ##STR00235##
N-isopropyl-5-(pyridin-2- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 311.2 200 ##STR00236##
N-isopropyl-5-(pyridin-4- ylmethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 311.2 201 ##STR00237##
5-(4-chlorophenylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 330.2 202 ##STR00238##
5-(1-(3-fluorophenyl)ethylamino)- N-isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 342.2 203 ##STR00239## 5-(1-(3,5-
difluorophenyl)ethylamino)-N- isopropylpyrazolo[1,5-
a]pyrimidine-3-carboxamide 360.2 204 ##STR00240## N-isopropyl-5-(3-
(trifluoromethyl)phenylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 364.2 205 ##STR00241##
N-(4,4-difluorocyclohexyl)-5-(2- methoxybenzylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 416.2 206 ##STR00242##
5-(2,5-difluorobenzylamino)-N-(4,4-
difluorocyclohexyl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 422.2
207 ##STR00243## N-(1,3-dimethyl-1H-pyrazol-5-yl)-
5-(isopropylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 314.1
208 ##STR00244## 5-(benzylamino)-N-(1,3-dimethyl-
1H-pyrazol-5-yl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 362.2 209
##STR00245## N-(1,3-dimethyl-1H-pyrazol-5-yl)-
5-(methylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 286.1 210
##STR00246## N-(1,3-dimethyl-1H-pyrazol-5-yl)-
5-(phenylamino)pyrazolo[1,5- a]pyrimidine-3-carboxamide 348.2 211
##STR00247## 5-amino-N-(1,3-dimethyl-1H- pyrazol-5-yl)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 272.1 212 ##STR00248##
5-(isopropylamino)-N-(3-methyl- 1-(3-(trifluoromethyl)phenyl)-1H-
pyrazol-5-yl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 444.2 213
##STR00249## N-isopropyl-5-(2-phenylpropan-2- ylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 338.2 214 ##STR00250##
(R)-N-isopropyl-5-(1- phenylethylamino)pyrazol[1,5-
a]pyrimidine-3-carboxamide 324.2 215 ##STR00251##
5-amino-N-(3-methyl-1-(2- (trifluoromethyl)phenyl)-1H-
pyrazol-5-yl)pyrazolo a]pyrimidine-3-carboxamide 402.1 216
##STR00252## 5-amino-N-(3-methyl-1-(3- (trifluoromethyl)phenyl)-1H-
pyrazol-5-yl)pyrazolo a]pyrimidine-3-carboxamide 402.1 217
##STR00253## (S)-N-isopropyl-5-(1- phenylethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 324.2 218 ##STR00254##
5-(isopropylamino)-N-(3-methyl- 1-(3-(trifluoromethyl)phenyl)-1H-
pyrazol-5-yl)pyrazolo a]pyrimidine-3-carboxamide 444.2 219
##STR00255## N-isopropyl-5-(2-phenylpropan-2- ylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 338.2 220 ##STR00256##
(R)-N-isopropyl-5-(1- phenylethylamino)pyrazolo[1,5-
a]pyrimidine-3-carboxamide 324.2 221 ##STR00257##
5-amino-N-(1-(2-fluorophenyl)-3- methyl-1H-pyrazol-5-
yl)pyrazolo[1,5-a]pyrimidine-3- carboxamide 353.1
Example 222
##STR00258##
[0344]
5-Amino-N-(3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyrimidine-3-carboxamide
##STR00259##
[0345] Ethyl 3-(5-chloro-2-methylphenyl)-3-oxopropanoate
[0346] To a stirring solution of 5-chloro-2-methylbenzoic acid
(4.85 g, 28.4 mmol) in tetrahydrofuran (30 mL) was added
N,N-carbonyldiimidazole (4.87 g, 30.0 mmol, 1.06 equiv). After 30
minutes, the reaction mixture was added to a suspension of
potassium ethyl malonate (11.61 g, 68.22 mmol, 2.40 equiv) and
magnesium chloride (3.27 g, 34.3 mmol, 1.21 equiv) in
tetrahydrofuran (50 mL). The resultant suspension was heated at
50.degree. C. After 10 hours, the reaction mixture was partitioned
between ethyl acetate and water. The organic portion was dried over
magnesium sulfate, filtered, and concentrated to provide 8.07 g
(118%) of ethyl 3-(5-chloro-2-methoxyphenyl)-3-oxopropanoate which
was used without purification. LCMS (ESI) m+H=241.2
##STR00260##
Ethyl 2-(5-chloro-2-methylbenzoyl)-3-(dimethylamino)acrylate
[0347] A solution of ethyl
3-(5-chloro-2-methylphenyl)-3-oxopropanoate (28.4 mmol) in
1,1-dimethoxy-N,N-dimethylmethanamine (10.0 mL, 75.3 mmol, 2.6
equiv) was heated at 90.degree. C. After 3 hours, the reaction
mixture was concentrated in vacuo, and the resultant residue was
purified by flash column chromatography on silica gel (0 to 80%
ethyl acetate in dichloromethane) to yield 2.87 g (34%) of ethyl
2-(5-chloro-2-methylbenzoyl)-3-(dimethylamino)acrylate. LCMS (ESI)
m+H=296.3.
##STR00261##
Ethyl 5-(5-chloro-2-methylphenyl)-1H-pyrazole-4-carboxylate
[0348] A solution of ethyl 2-(5-chloro-2-methylbenzoyl)-3-(dimethyl
amino)acrylate (2.87 g, 9.70 mmol) and hydrazine (0.50 mL, 16.0
mmol, 1.6 equiv) in 30 mL ethanol was heated at 70.degree. C. for 2
hours. Solvent and excess hydrazine were then evaporated to provide
2.57 g (100%) of ethyl
5-(5-chloro-2-methoxyphenyl)-1H-pyrazole-4-carboxylate, which was
used without further purification. LCMS (ESI) m+H=265.2.
##STR00262##
and
##STR00263##
Ethyl
3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazole-4-carboxylate
Ethyl
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazole-4-carboxylate
[0349] A solution of ethyl
5-(5-chloro-2-methylphenyl)-1H-pyrazole-4-carboxylate (9.70 mmol),
cesium carbonate (3.83 g, 11.8 mmol, 1.2 equiv) and iodomethane
(0.90 mL, 14.0 mmol, 1.5 equiv) in N,N-dimethylformamide (35 mL)
was heated at 40.degree. C. After 7 hours, the reaction mixture was
partitioned between ethyl acetate and water. The organic portion
was dried over magnesium sulfate, filtered, and concentrated. The
crude product was purified by flash column chromatography on silica
gel (0 to 40% ethyl acetate in dichloromethane) to yield 2.18 g
(81%) of a 1:1 mixture of regioisomeric products, ethyl
3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazole-4-carboxylate and
ethyl
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazole-4-carboxylate.
LCMS (ESI) m+H=279.2.
##STR00264##
and
##STR00265##
tert-Butyl
3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-ylcarbamate
tert-Butyl
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-ylcarbamate
[0350] A solution of ethyl
3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazole-4-carboxylate and
ethyl
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazole-4-carboxylate (1:1
mixture of regioisomers, 2.179 g, 7.818 mmol) and 1.0 M aqueous
sodium hydroxide (14 mL, 20 mmol, 4 equiv) in ethanol (10 mL) was
heated at 50.degree. C. for 16 hours. After evaporation of the
ethanol, the residue was diluted with water. The resultant aqueous
solution was acidified to about pH 2 with 1.0 M aqueous phosphoric
acid. This solution was extracted with dichloromethane (3.times.).
The combined organic extracts were dried over MgSO.sub.4, filtered,
and concentrated to yield 1.936 g (99%) of the corresponding
carboxylic acids which were carried forward immediately without
further purification. LCMS (ESI) m+H=251.1.
[0351] To a solution of the intermediate carboxylic acids in
dioxane (15 mL) was added triethylamine (2.2 mL, 15.8 mmol, 4.1
equiv) and diphenylphosphonic azide (1.9 mL, 8.82 mmol, 2.3 equiv).
After 1 hour, the reaction was heated to 90.degree. C. and t-butyl
alcohol (15 mL) was added. After 2 hours, the reaction mixture was
concentrated in vacuo, and the resultant residue was partitioned
between ethyl acetate and water. The organic portion was washed
with saturated aqueous sodium chloride solution, dried over
magnesium sulfate, filtered, and concentrated. The crude product
was purified by flash column chromatography on silica gel (0 to 50%
ethyl acetate in dichloromethane) to obtain 1.64 g (66%) of a 1:1
mixture of the regioisomeric products. LCMS (ESI) m+H=322.2.
##STR00266##
##STR00267##
[0352] To a solution of tert-butyl
3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-ylcarbamate and
tert-butyl
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-ylcarbamate (1:1
mixture of regioisomers, 1.64 g, 5.09 mmol) in dichloromethane (10
mL) was added hydrogen chloride (10.0 mL, 40 mmol, 16 equiv, 4.0 M
in 1,4-dioxane). After 16 hours, the reaction mixture was
concentrated in vacuo. The resultant solid residue was partitioned
between dichloromethane and saturated aqueous sodium bicarbonate
solution. The aqueous portion was extracted once more with
dichloromethane, and the combined organic extracts were dried over
magnesium sulfate and concentrated. The crude product was purified
and regioisomers separated by flash column chromatography on silica
gel (0 to 100% ethyl acetate in dichloromethane) to yield: 429.7 mg
of 3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-amine. LCMS
(ESI) m+H=222.1; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 7.35
(d, J=1.8, 1H), 7.24-7.17 (m, 2H), 7.04 (s, 1H), 3.84 (s, 3H), 2.76
(s, 2H), 2.30 (s, 3H), and 420.2 mg of
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-amine. LCMS (ESI)
m+H=222.2; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 7.33 (dd,
J=8.3, 2.1, 1H), 7.28 (s, 1H), 7.24-7.19 (m, 2H), 3.57 (s, 3H),
2.71 (s, 2H), 2.15 (s, 3H).
##STR00268##
5-Chloro-N-(3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo-
[1,5-a]pyrimidine-3-carboxamide
[0353] To a solution of
3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-amine (182.9 mg,
0.4826 mmol, 1.2 equiv) in dichloromethane (5 mL) was added
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (91.2 mg,
0.411 mmol, 1.0 equiv) and triethylamine (0.30 mL, 2.2 mmol, 5.2
equiv) at room temperature. After 16 hours, the reaction mixture
was partitioned between ethyl acetate and saturated aqueous sodium
bicarbonate solution. The organic layer was dried over magnesium
sulfate, filtered, and concentrated to give 143.1 mg (87%) of
5-chloro-N-(3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo-
[1,5-a]pyrimidine-3-carboxamide which was carried forward without
purification. LCMS (ESI) m+H=401.0.
##STR00269##
5-amino-N-(3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[-
1,5-a]pyrimidine-3-carboxamide
[0354] Ammonia gas was bubbled through an ice-cooled suspension of
5-chloro-N-(3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo-
[1,5-a]pyrimidine-3-carboxamide (143.1 mg, 0.3566 mmol) in 3.0 mL
isopropanol for 20 minutes. The reaction vessel was capped and
heated by microwave irradiation at 110.degree. C. for 30 minutes.
The reaction mixture was concentrated to dryness. The crude product
was purified by reverse phase HPLC and lyophilized to give 76.4 mg
(56%) of
5-amino-N-(3-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[-
1,5-a]pyrimidine-3-carboxamide. LCMS (ESI) m+H=382.1; .sup.1H NMR
(400 MHz, DMSO) .delta. 9.34 (s, 1H), 8.63 (d, J=7.6, 1H), 8.16 (d,
J=9.6, 2H), 7.41 (m, 3H), 6.37 (d, J=7.6, 1H), 3.89 (s, 3H), 2.26
(s, 3H).
Example 223
##STR00270##
[0355]
5-Amino-N-(5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyr-
azolo[1,5-a]pyrimidine-3-carboxamide
[0356] Using
5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-amine and
following the procedures described for Example 222, the title
compound
5-amino-N-(5-(5-chloro-2-methylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[-
1, 5-a]pyrimidine-3-carboxamide was obtained. LCMS (ESI) m+H=382.1;
.sup.1H NMR (400 MHz, DMSO) .delta. 9.16 (s, 1H), 8.61 (d, J=7.6,
1H), 8.13 (s, 1H), 7.83 (s, 1H), 7.50 (m 3H), 6.35 (d, J=7.6, 1H),
3.60 (s, 3H), 2.13 (s, 3H).
Example 224
##STR00271##
[0357]
5-Amino-N-(3-(5-chloro-2-methylphenyl)-1-(2-methoxyethyl)-1H-pyrazo-
l-4-yl)pyrazolo[1,5-a]pyrimidine-3-carboxamide
##STR00272##
[0358] Ethyl
3-(5-chloro-2-methylphenyl)-1-(2-methoxyethyl)-1H-pyrazole-4-carboxylate
[0359] A solution of ethyl
5-(5-chloro-2-methylphenyl)-1H-pyrazole-4-carboxylate (0.2286 g,
0.8636 mmol), cesium carbonate (359.1 mg, 1.102 mmol, 1.276 equiv)
and 1-bromo-2-methoxyethane in N,N-dimethylformamide (6 mL) was
heated at 50.degree. C. After 2.5 hours, the reaction mixture was
partitioned between ethyl acetate and water. The organic layer was
dried over magnesium sulfate, filtered, and concentrated to yield
257.7 mg (92%) of ethyl
3-(5-chloro-2-methylphenyl)-1-(2-methoxyethyl)-1H-pyrazole-4-carbox-
ylate, which was carried forward without purification. LCMS (ESI)
m+H=323.2.
##STR00273##
5-Amino-N-(3-(5-chloro-2-methylphenyl)-1-(2-methoxyethyl)-1H-pyrazol-4-yl-
)pyrazolo[1,5-a]pyrimidine-3-carboxamide
[0360] The title compound was prepared using ethyl
3-(5-chloro-2-methylphenyl)-1-(2-methoxyethyl)-1H-pyrazole-4-carboxylate
and following the procedures described for Example 222. LCMS (ESI)
m+H=426.2; .sup.1H NMR (400 MHz, DMSO) .delta. 9.34 (s, 1H), 8.63
(d, J=7.5, 1H), 8.16 (d, J=1.6, 2H), 7.41 (m, 3H), 6.37 (d, J=7.6,
1H), 4.31 (t, J=5.2, 2H), 3.74 (t, J=5.2, 2H), 3.27 (s, 3H), 2.26
(s, 3H).
Example 225
##STR00274##
[0361]
5-Amino-N-(3-(2,5-dimethylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo-
[1, 5-a]pyrimidine-3-carboxamide
##STR00275##
[0362] Di-tert-butyl
2-(2,5-dimethylphenyl)-2-oxoethyliminodicarbonate
[0363] To an oven-dried flask charged with di-tert-butyl
iminodicarboxylate (2.566 g, 11.81 mmol, 1.10 equiv) in
N,N-dimethylformamide (30 mL) was added sodium hydride (0.586 g,
14.6 mmol, 1.37 equiv, 60% in mineral oil) at room temperature.
After 1.5 hours, 2-bromo-1-(2,5-dimethylphenyl)ethanone (2.432 g,
10.71 mmol, 1.00 equiv) was added to the reaction mixture at room
temperature. After an additional 1.5 hours, the reaction mixture
was partitioned between ethyl acetate and water. The organic
portion was washed with water and saturated aqueous sodium chloride
solution, dried over magnesium sulfate, filtered, and concentrated.
The crude product was purified by flash column chromatography on
silica gel (0 to 40% ethyl acetate in heptanes) to obtain 3.01 g
(77%) of di-tert-butyl
2-(2,5-dimethylphenyl)-2-oxoethyliminodicarbonate. LCMS (ESI)
m+Na=386.2.
##STR00276##
Di-tert-butyl
1-(dimethylamino)-3-(2,5-dimethylphenyl)-3-oxoprop-1-en-2-yliminodicarbon-
ate
[0364] A solution of di-tert-butyl
2-(2,5-dimethylphenyl)-2-oxoethyliminodicarbonate (3.0076 g, 8.2752
mmol, 1 equiv) and 1,1-dimethoxy-N,N-dimethylmethanamine (6.0 mL,
45 mmol, 5.4 equiv) was heated at 70.degree. C. for 17 hours and
then 100.degree. C. for 24 hours. After the evaporation of excess
1,1-dimethoxy-N,N-dimethylmethanamine, the crude product was
purified by flash column chromatography on silica gel (0 to 50%
ethyl acetate in heptanes) to yield 1.305 g (38%) of di-tert-butyl
1-(dimethylamino)-3-(2,5-dimethylphenyl)-3-oxoprop-1-en-2-yliminodicarbon-
ate. LCMS (ESI) m+H=419.3.
##STR00277##
3-(2,5-Dimethylphenyl)-1H-pyrazol-4-amine
[0365] Di-tert-butyl
1-(dimethylamino)-3-(2,5-dimethylphenyl)-3-oxoprop-1-en-2-yliminodicarbon-
ate (1.305 g, 3.118 mmol, 1.0 equiv) and hydrazine (0.20 mL, 6.4
mmol, 2.0 equiv) were dissolved together in ethanol (15 mL). The
reaction mixture was heated at 70.degree. C. for 1 hour and then
evaporated to dryness. The solid residue was dissolved in
dichloromethane (8 mL) and hydrogen chloride (8.0 mL, 100 mmol, 40
equiv, 4.0 M in 1,4-dioxane) and stirred at room temperature for
3.5 hours. The solvent and excess hydrogen chloride were
evaporated, and the crude product was partitioned between saturated
aqueous sodium bicarbonate solution and dichloromethane. The
aqueous layer was extracted once with dichloromethane, and the
combined organic extracts were dried over magnesium sulfate and
concentrated to yield 605.4 mg (104%) of
3-(2,5-dimethylphenyl)-1H-pyrazol-4-amine, which was carried
forward without purification. LCMS (ESI) m+H=188.3.
##STR00278##
5-Chloro-N-(3-(2,5-dimethylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5--
a]pyrimidine-3-carboxamide
[0366] To a solution of
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (400.4 mg,
1.853 mmol, 1.16 equiv) in dichloromethane (6 mL) was added
3-(2,5-dimethylphenyl)-1H-pyrazol-4-amine (300.0 mg, 1.602 mmol,
1.0 equiv) and triethylamine (0.70 mL, 5.0 mmol, 3.1 equiv) at room
temperature. After 14 hours, the reaction mixture was partitioned
between dichloromethane and half-saturated aqueous sodium
bicarbonate solution. The aqueous layer was extracted once with
dichloromethane. The combined organic portions are dried over
magnesium sulfate, filtered, and concentrated to yield
5-chloro-N-(3-(2,5-dimethylphenyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimid-
ine-3-carboxamide, which was carried forward without purification.
LCMS (ESI) m+H=367.1.
[0367] To a solution of the above crude material in
N,N-dimethylformamide (12 mL) was added cesium carbonate (0.890 g,
2.73 mmol, 2.0 equiv) and methyl iodide (0.135 mL, 2.17 mmol, 1.61
equiv). The reaction mixture was then heated at 40.degree. C. After
5 hours, the reaction mixture was partitioned between ethyl acetate
and water. The organic portion was washed with water and saturated
aqueous sodium chloride solution, dried over magnesium sulfate,
filtered, and concentrated. The crude product was purified by flash
column chromatography on silica gel (20 to 90% ethyl acetate in
dichloromethane) to obtain 45.5 mg (9%) of
5-chloro-N-(3-(2,5-dimethylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5--
a]pyrimidine-3-carboxamide. LCMS (ESI) m+H=381.2.
##STR00279##
5-Amino-N-(3-(2,
5-dimethylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidine-3-ca-
rboxamide
[0368] Ammonia gas was bubbled through an ice-cooled suspension of
5-chloro-N-(3-(2,
5-dimethylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidine-3-ca-
rboxamide (45.5 mg, 0.119 mmol) in ethanol (3.0 mL) for 20 minutes.
The reaction vessel was capped and heated at 100.degree. C. by
microwave irradiation for 30 minutes. The reaction mixture was
concentrated to dryness, and the crude product was purified by
reverse phase HPLC and lyophilized to give 4.0 mg (9.3%) of
5-amino-N-(3-(2,5-dimethylphenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a-
]pyrimidine-3-carboxamide. LCMS (ESI) m+H=362.1; .sup.1H NMR (400
MHz, DMSO) .delta. 9.47 (s, 1H), 8.62 (d, J=7.5, 1H), 8.16 (d,
J=7.1, 2H), 7.30 (d, J=8.2, 1H), 7.19 (d, J=6.2, 2H), 6.36 (d,
J=7.6, 1H), 5.75 (s, 2H), 3.88 (s, 3H), 2.29 (s, 3H), 2.21 (s,
3H).
Example 226
##STR00280##
[0369]
5-Amino-N-(1-(5-chloro-2-methylphenyl)-3-methyl-1H-pyrazol-5-yl)pyr-
azolo[1,5-a]pyrimidine-3-carboxamide
##STR00281##
[0370] (5-Chloro-2-methylphenyl)hydrazine hydrochloride
[0371] To an ice-cooled suspension of 5-chloro-2-methylaniline
(1.4362 g, 10.143 mmol, 1.00 equiv) in water (10 mL) was added
concentrated hydrochloric acid (10 mL). To this reaction mixture
was added dropwise a solution of sodium nitrite (0.791 g, 11.5
mmol, 1.13 equiv) in water (5 mL) at 0.degree. C. After 2 hours,
the reaction mixture was slowly added to a stirring ice-cooled
solution of tin chloride dihydrate (5.88 g, 25.8 mmol, 2.55 equiv)
in concentrated hydrochloric acid (8 mL). Water was added as needed
to maintain the stirring while solids formed. The reaction was kept
at 0.degree. C. for 45 minutes. The white solids were filtered and
rinsed with diethyl ether (2.times.50 mL). The solids were dried
under vacuum to provide 1.49 g (76%) of
(5-chloro-2-methylphenyl)hydrazine hydrochloride. .sup.1H NMR (400
MHz, DMSO-d.sub.6) .delta.: 10.08 (s, 3H), 7.98 (s, 1H), 7.13 (d,
1H), 6.97 (s, 1H), 6.91 (d, 1H), 2.14 (s, 3H).
##STR00282##
1-(5-Chloro-2-methylphenyl)-3-methyl-1H-pyrazol-5-amine
[0372] To a solution of (5-chloro-2-methylphenyl)hydrazine
hydrochloride (1.49 g, 7.72 mmol, 1.00 equiv) in ethanol (8 mL) was
added hydrogen chloride (4.0 mL, 20 mmol, 2 equiv, 5 M aqueous
solution) and 3-aminocrotonitrile (0.664 g, 8.09 mmol, 1.05 equiv).
The reaction mixture was stirred at 80.degree. C. for 16 hours and
then brought to neutral pH with saturated aqueous sodium
bicarbonate solution. The resultant solution was extracted twice
with dichloromethane, and the combined extracts were dried over
magnesium sulfate, filtered, and concentrated to yield 1.41 g (82%)
of 1-(5-chloro-2-methylphenyl)-3-methyl-1H-pyrazol-5-amine, which
was carried forward without further purification. LCMS (ESI)
m+H=222.2; .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 7.39 (d,
1H), 7.37 (d, 1H), 7.25 (s, 1H), 5.22 (s, 1H), 5.00 (s, 2H), 2.04
(overlapping s and s, 6H).
##STR00283##
5-Amino-N-(1-(5-chloro-2-methylphenyl)-3-methyl-1H-pyrazol-5-yl)pyrazolo[-
1,5-a]pyrimidine-3-carboxamide
[0373] The title compound was prepared using
1-(5-chloro-2-methylphenyl)-3-methyl-1H-pyrazol-5-amine and
following the procedures described for Example 222. LCMS (ESI)
m+H=382.1; .sup.1H NMR (400 MHz, DMSO) .delta. 9.73 (s, 1H), 8.63
(d, J=7.5, 1H), 8.18 (s, 1H), 7.58-7.45 (m, 3H), 6.41 (s, 1H), 6.37
(d, J=7.6, 1H), 2.22 (s, 3H), 2.04 (s, 3H).
Example 227
##STR00284##
[0374]
N-(3-(3-Chlorophenyl)-1-methyl-1H-pyrazol-4-yl)-5-(cyclopropylmethy-
lamino)pyrazolo[1,5-a]pyrimidine-3-carboxamide
##STR00285##
[0375] 2-(2-(3-Chlorophenyl)-2-oxoethyl)isoindoline-1,3-dione
[0376] A solution of 2-bromo-3'-chloroacetophenone (0.9271 g, 3.971
mmol, 1.0 equiv) and potassium phthalimide (0.8129 g, 4.389 mmol,
1.1 equiv) in N,N-dimethylformamide (15 mL) was heated at
50.degree. C. After 1 hour, the solvent was removed by rotary
evaporation. The resultant solids were triturated with ethyl
acetate and filtered. The collected solids were dried under vacuum
to yield 1.19 g (117%) of
2-(2-(3-chlorophenyl)-2-oxoethyl)isoindoline-1,3-dione, which was
carried forward without purification. .sup.1H NMR (400 MHz,
DMSO-d.sub.6) .delta.: 8.13 (s, 1H), 8.05 (d, 1H), 7.96 (m, 2H),
7.93 (m, 2H), 7.83 (d, 1H), 7.65 (t, 1H), 5.29 (s, 2H).
##STR00286##
2-(3-(3-Chlorophenyl)-1-(dimethylamino)-3-oxoprop-1-en-2-yl)isoindoline-1-
,3-dione
[0377] A stirred mixture of
2-(2-(3-chlorophenyl)-2-oxoethyl)isoindoline-1,3-dione (782.2 mg,
2.610 mmol, 1 equiv) and 1,1-dimethoxy-N,N-dimethylmethanamine (1.5
mL, 11 mmol, 4.3 equiv) was heated at 100.degree. C. for 18 hours.
Excess 1,1-dimethoxy-N,N-dimethylmethanamine was removed by rotary
evaporation. The crude product was purified by flash column
chromatography on silica gel (50 to 100% ethyl acetate in heptane)
to yield 740 mg (80%) of
2-(3-(3-chlorophenyl)-1-(dimethylamino)-3-oxoprop-1-en-2-yl)isoindoline-1-
,3-dione. LCMS (ESI) m+H=355.2; .sup.1H NMR (400 MHz, CDCl.sub.3)
.delta.: 7.90 (d of d, 2H), 7.77 (d of d, 2H), 7.57 (s, 1H), 7.44
(d, 1H), 7.37 (overlapping d and s, 2H), 7.31 (t, 1H), 3.00 (s,
6H).
##STR00287##
3-(3-Chlorophenyl)-1-methyl-1H-pyrazol-4-amine
[0378] A solution of
2-(3-(3-chlorophenyl)-1-(dimethylamino)-3-oxoprop-1-en-2-yl)isoindoline-1-
,3-dione (2.30 g, 6.48 mmol, 1.0 equiv) and N-methylhydrazine (1.4
mL, 26 mmol, 4.0 equiv) in ethanol (50 mL) was heated at 80.degree.
C. After 2 hours, the reaction mixture was concentrated, and the
resultant crude mixture of regioisomers was separated and purified
by flash column chromatography on silica gel (0 to 80% ethyl
acetate in dichloromethane) to yield: 715.0 mg (53%) of
3-(3-chlorophenyl)-1-methyl-1H-pyrazol-4-amine. LCMS (ESI)
m+H=208.2; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 7.78 (s, 1H),
7.63 (d, 1H), 7.33 (t, 1H), 7.25 (overlapping with CDCl.sub.3, 1H),
7.04 (s, 1H), 3.84 (s, 3H), and 274.6 mg (20%) of
5-(3-chlorophenyl)-1-methyl-1H-pyrazol-4-amine. LCMS (ESI)
m+H=208.2; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 7.43 (t, 1H),
7.38 (overlapping d and s, 2H), 7.27 (d, 1H), 7.23 (s, 1H), 3.76
(s, 3H).
##STR00288##
N-(3-(3-Chlorophenyl)-1-methyl-1H-pyrazol-4-yl)-5-(cyclopropylmethylamino-
)pyrazolo[1,5-a]pyrimidine-3-carboxamide
[0379] To a solution of
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (0.166 g,
0.768 mmol) in dichloromethane (8 mL) was added
3-(3-chlorophenyl)-1-methyl-1H-pyrazol-4-amine (73.6 mg, 0.354
mmol) and triethylamine (0.20 mL, 1.4 mmol) at room temperature.
After 1 hour, the reaction mixture was partitioned between
dichloromethane and half-saturated aqueous sodium bicarbonate
solution. The organic layer was dried over magnesium sulfate and
concentrated to yield
5-chloro-N-(3-(3-chlorophenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
rimidine-3-carboxamide, which is carried forward without
purification. LCMS (ESI) m+H=387.1.
[0380] A solution of the above crude
5-chloro-N-(3-(3-chlorophenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]py-
rimidine-3-carboxamide, cyclopropylmethylamine (0.1 mL, 1.0 mmol),
and N,N-diisopropylethylamine (0.20 mL, 1.1 mmol) in ethanol (5 mL)
was heated at 120.degree. C. by microwave irradiation. After 30
minutes, the reaction mixture was concentrated to dryness, and the
resultant crude product was purified by reverse phase HPLC and
lyophilized to give 95.7 mg (64%) of
N-(3-(3-chlorophenyl)-1-methyl-1H-pyrazol-4-yl)-5-(cyclopropylmethylamino-
)pyrazolo[1,5-a]pyrimidine-3-carboxamide. LCMS (ESI) m+H=422.1;
.sup.1H NMR (500 MHz, DMSO) .delta. 9.62 (s, 1H), 8.58 (d, J=7.6,
1H), 8.20 (s, 1H), 8.14 (s, 2H), 7.75-7.59 (m, 2H), 7.46 (t, J=7.8,
1H), 7.42-7.34 (m, 1H), 6.41 (d, J=7.6, 1H), 3.90 (s, 3H),
2.62-2.54 (m, 2H), 0.76 (s, 1H), 0.38-0.24 (m, 2H), -0.14 (m,
2H).
Example 228
##STR00289##
[0381] 5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[3-(2,5-dichloro-phenyl)-1-methyl-1H-pyrazol-4-yl]-amide
##STR00290##
[0382] 5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic
acid
[0383] To a stirred solution of 5-amino-1H-pyrazole-4-carboxylic
acid (10.0 g, 71.4 mmol) in ethanol (100 mL), was added sodium
ethoxide (17.0 g, 245 mmol) followed by 1,3-dimethyluracil (11.0 g,
78.6 mmol). The reaction mixture was then stirred at reflux
overnight under an argon atmosphere. The mixture was poured into
ice-water, and the resultant solution was acidified to about pH 3-4
with concentrated HCl. The suspension was stirred for 2 hours and
then filtered to afford the intermediate, which was used without
further purification (10.0 g, 58% yield). .sup.1H NMR (400 MHz,
DMSO-d.sub.6): 8.54 (d, J=9.2 Hz, 1H), 8.06 (s, 1H), 6.11 (d, J=7.2
Hz, 1H).
##STR00291##
5-Chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride
[0384] A suspension of
5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylic acid (9.5
g, 53.1 mmol) and diisopropylethylamine (17.1 g, 132.6 mmol) in
phosphorus(V) oxychloride (250 mL) was heated at 130.degree. C.
under an argon atmosphere for 3.5 hours. The mixture was
concentrated in vacuum and passed through a silica gel column
(dichloromethane) to afford
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride as a solid
(8.0 g, 70% yield). .sup.1H NMR (400 MHz, CDCl.sub.3): 8.72 (d,
J=7.2 Hz, 1H), 8.65 (s, 1H), 7.17 (d, J=7.6 Hz, 1H).
##STR00292##
2-Bromo-1-(2,5-dichlorophenyl)ethanone
[0385] To an ice-cooled solution of 2',5'-dichloroacetophenone (1.0
g, 5.0 mmol) in acetic acid (10 mL) was added HBr (.about.1%)
followed by a solution of bromine (0.80 g, 5.0 mmol) in acetic acid
(3 mL). The resultant mixture was warmed to room temperature and
stirred overnight. The mixture was poured into ice water and then
neutralized with saturated aqueous sodium carbonate solution.
Saturated aqueous sodium thiosulfate solution was then added to the
mixture. The resultant mixture was extracted with ethyl acetate.
The organic phase was washed with saturated aqueous sodium chloride
solution, dried over anhydrous sodium sulfate, filtered, and
concentrated. Purification by flash column chromatography afforded
2-bromo-1-(2,5-dichlorophenyl)ethanone as an oil (0.70 g, 50%
yield). .sup.1H NMR (400 MHz, CDCl.sub.3): 7.54 (d, J=2.4 Hz, 1H),
7.43 (m, 1H), 7.40 (m, 1H), 4.68 (s, 2H).
##STR00293##
2-(2-(2,5-Dichlorophenyl)-2-oxoethyl)isoindoline-1,3-dione
[0386] To an ice-cooled solution of
2-bromo-1-(2,5-dichlorophenyl)ethanone (0.10 g, 0.37 mmol) in
N,N-dimethylformamide (8 mL) was added potassium phthalimide (76
mg, 0.41 mmol). The mixture was warmed to room temperature for 2
hours. The resultant mixture was then poured into water and
extracted with ethyl acetate. The organic layer was dried over
anhydrous sodium sulfate, filtered, and concentrated.
Recrystallization with diethyl ether afforded
2-(2-(2,5-dichlorophenyl)-2-oxoethyl)isoindoline-1,3-dione as a
white solid. (110 mg, 88% yield). .sup.1H NMR (400 MHz,
CDCl.sub.3): 7.92-7.94 (m, 2H), 7.78-7.80 (m, 2H), 7.72 (m, 1H),
7.45-7.46 (m, 2H), 5.08 (s, 2H).
##STR00294##
2-(3-(2,5-Dichlorophenyl)-1-(dimethylamino)-3-oxoprop-1-en-2-yl)isoindoli-
ne-1,3-dione
[0387] A solution of 2-(2-(2,5-di
chlorophenyl)-2-oxoethyl)isoindoline-1,3-dione (0.10 g, 0.30 mmol)
in 1,1-dimethoxy-N,N-dimethylmethanamine (8 mL) was heated at
reflux for 2 hours. The resultant mixture was then concentrated.
Purification by flash column chromatography afforded
2-(3-(2,5-dichlorophenyl)-1-(dimethylamino)-3-oxoprop-1-en-2-yl)isoindoli-
ne-1,3-dione as a solid (0.90 g, 77% yield).
##STR00295##
3-(2,5-Dichlorophenyl)-1-methyl-1H-pyrazol-4-amine
[0388] To an ice-cooled solution of
2-(3-(2,5-Dichlorophenyl)-1-(dimethylamino)-3-oxoprop-1-en-2-yl)isoindoli-
ne-1,3-dione (0.050 g, 0.13 mmol) in ethanol (6 mL) was added 40%
aqueous methylhydrazine solution (45 mg, 0.39 mmol). The mixture
was then heated at reflux for 3 hours. The reaction mixture was
then concentrated and purified by flash column chromatography to
afford 3-(2,5-dichlorophenyl)-1-methyl-1H-pyrazol-4-amine as a
solid (12 mg, 38% yield). .sup.1H NMR (400 MHz, CDCl.sub.3): 7.50
(d, J=3.6 Hz, 1H), 7.38 (d, J=8.8 Hz, 1H), 7.28 (m, 1H), 7.06 (s,
1H), 3.86 (s, 3H), 2.98 (s, 2H).
##STR00296##
5-Chloro-N-(3-(2,5-dichlorophenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5--
a]pyrimidine-3-carboxamide
[0389] To an ice-cooled solution of
3-(2,5-dichlorophenyl)-1-methyl-1H-pyrazol-4-amine (121 mg, 0.50
mmol) and triethylamine (101 mg, 1.00 mmol) in dichloromethane (15
mL) was added 5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride
(162 mg, 1.5 mmol). The reaction mixture was warmed to room
temperature for 3 hours. The mixture was then washed with saturated
aqueous sodium chloride solution. The collected organics were dried
over anhydrous sodium sulfate, filtered, and concentrated.
Purification by preparative HPLC afforded
5-chloro-N-(3-(2,5-dichlorophenyl)-1-methyl-1H-pyrazol-4-yl)pyra-
zolo[1,5-a]pyrimidine-3-carboxamide as a solid (110 mg, 52% yield).
.sup.1H NMR (400 MHz, DMSO-d.sub.6): 9.34 (d, J=7.6 Hz, 1H), 9.21
(s, 1H), 8.69 (s, 1H), 8.33 (s, 1H), 7.71 (d, J=9.2 Hz, 1H), 7.60
(d, J=9.2 Hz, 1H), 7.54 (s, 1H), 7.36 (d, J=6.8 Hz, 1H), 3.93 (s,
3H).
##STR00297##
5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[3-(2,5-dichloro-phenyl)-1-methyl-1H-pyrazol-4-yl]-amide
[0390] A solution of 5-chloro-N-(3-(2,
5-dichlorophenyl)-1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidine-3-ca-
rboxamide (110 mg, 0.26 mmol) in ethanol saturated with ammonia (4
mL) was heated at 95.degree. C. for 30 minutes with microwave
irradiation. The mixture was concentrated. Purification by flash
column chromatography afforded
5-amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[3-(2,5-dichloro-phenyl)-1-methyl-1H-pyrazol-4-yl]-amide as a solid
(80 mg, 77% yield). .sup.1H NMR (400 MHz, DMSO-d.sub.6): 9.37 (s,
1H), 8.63 (d, J=7.6 Hz, 1H), 8.14-8.16 (m, 2H), 7.70 (m, 1H),
7.52-7.55 (m, 2H), 6.39 (d, J=8.0 Hz, 1H), 3.91 (s, 3H).
Example 229
##STR00298##
[0391]
5-Benzenesulfonylamino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
isopropylamide
[0392] A mixture of
5-chloro-N-isopropylpyrazolo[1,5-a]pyrimidine-3-carboxamide (95.5
mg, 0.40 mmol, 1.0 equiv), benzenesulfonamide (62.0 mg, 0.40 mmol,
1.0 equiv) and cesium carbonate (312 mg, 0.96 mmol, 2.4 equiv) in
1,2-dimethoxyethane (8 mL) was heated to 85.degree. C. for 72
hours. The solvent was removed in vacuo, and the resultant residue
dissolved in water. The pH of the solution was then adjusted to
about 5 by the addition of 1M HCl aqueous solution and extracted
with dichloromethane (2.times.30 mL). The organic extracts were
concentrated under vacuum and the residue purified by flash column
chromatography on silica gel (gradient: 0 to 10% methanol in
dichloromethane) to afford 57.0 mg (40%) of
5-benzenesulfonylamino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
isopropylamide as a solid. LCMS (ESI) m+H=360.3; .sup.1H NMR (400
MHz, DMSO-d.sub.6) .delta.: 12.2 (s, 1H), 8.97 (d, 1H), 8.30 (s,
1H), 8.01 (d, 2H), 7.64 (m, 4H), 6.64 (m, 1H), 4.13 (m, 1H), 1.21
(d, 6H).
Example 230
##STR00299##
[0393]
5-(6-Trifluoromethyl-pyridin-2-ylamino)-pyrazolo[1,5-a]pyrimidine-3-
-carboxylic acid (5-methyl-isoxazol-3-yl)-amide
##STR00300##
[0394] Ethyl 5-Chloropyrazolo[1,5-a]pyrimidine-3-carboxylate
[0395] To a suspension of
5-oxo-4,5-dihydro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid ethyl
ester (prepared according to Gavrin, L. K. et al, J Org. Chem.
2007, 72, 1043-1046) (3.00 g, 14.5 mmol, 1 equiv) in phosphorus
oxychloride (30 mL) was added diisopropylethylamine (2.00 mL, 11.6
mmol, 0.8 equiv). The mixture was heated to 90.degree. C. for 4.5
hours. After cooling, the mixture was carefully quenched with
ice-water and extracted with dichloromethane. The organic extract
was washed with saturated aqueous sodium bicarbonate solution,
dried over anhydrous sodium sulphate, filtered, and concentrated
under vacuum to give a solid. Trituration (diethyl ether) afforded
2.38 g (73%) of ethyl
5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate as a solid. LCMS
(ESI) m+H=226.2 (mono chlorinated isotope pattern); .sup.1H NMR
(400 MHz, CDCl.sub.3) .delta.: 8.63 (d, 1H), 8.56 (s, 1H), 6.99 (d,
1H), 4.43 (q, 2H), 1.42 (t, 3H).
##STR00301##
Ethyl
5-(6-(Trifluoromethyl)pyridin-2-ylamino)pyrazolo[1,5-a]pyrimidine-3-
-carboxylate
[0396] A 20-mL microwave vial was charged with ethyl
5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate (1.28 g, 5.67 mmol,
1 equiv), 2-amino-6-(trifluoromethyl)pyridine (1.10 g, 6.81 mmol,
1.2 equiv), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (132
mg, 0.22 mmol, 4 mol %), tris(dibenzylideneacetone) dipalladium(0)
(104 mg, 0.11 mmol, 2 mol %), sodium tert-butoxide (652 mg, 6.81
mmol, 1.2 equiv) and toluene (12 mL). The vial was sealed and the
contents degassed, purged with argon and then heated in a microwave
reactor at 140.degree. C. for 20 minutes. After cooling, the
mixture was diluted with ethyl acetate and filtered through a pad
of Celite.RTM.. The filtrate was washed with water and saturated
aqueous sodium chloride solution, dried over anydrous sodium
sulphate, filtered, and concentrated under vacuum. The resultant
residue was purified by flash column chromatography on silica gel
(gradient: 0 to 20% ethyl acetate in dichloromethane) to give 344
mg (17%) of ethyl
5-(6-(trifluoromethyl)pyridin-2-ylamino)pyrazolo[1,5-a]pyrimidine-3-carbo-
xylate as an orange solid. LCMS (ESI) m+H=352.1; .sup.1H NMR (300
MHz, DMSO-d.sub.6) .delta.: 11.06 (s, 1H), 9.16 (d, 1H), 8.94 (d,
1H), 8.39 (s, 1H), 8.10 (t, 1H), 7.57 (d, 1H), 7.05 (d, 1H), 4.31
(q, 2H), 1.40 (t, 3H).
##STR00302##
5-(6-Trifluoromethyl-pyridin-2-ylamino)-pyrazolo[1,5-a]pyrimidine-3-carb
oxylic acid
[0397] A mixture of ethyl
5-(6-(trifluoromethyl)pyridin-2-ylamino)pyrazolo[1,5-a]pyrimidine-3-carbo-
xylate (344 mg, 0.98 mmol, 1.0 equiv), 2M aqueous sodium hydroxide
solution (1.50 mL, 3.0 equiv) and ethanol (15 mL) was heated to
reflux for 5 hours. After cooling, the precipitate was collected by
filtration, washed with ethanol, and air dried. The resultant solid
was suspended in 1.25 M HCl in methanol (16 mL) and then
concentrated under vacuum. The residue was triturated (diethyl
ether) to afford 355 mg (quant. yield) of
5-(6-trifluoromethyl-pyridin-2-ylamino)-pyrazolo[1,5-a]pyrimidine-3-carbo-
xylic acid which was used without further purification. LCMS (ESI)
m+H=324.2; .sup.1H NMR (300 MHz, DMSO-d.sub.6) .delta.: 11.03 (s,
1H), 9.01 (d, 1H), 8.95 (d, 1H), 8.35 (s, 1H), 8.10-8.02 (m, 1H),
7.54 (d, 1H), 7.16 (d, 1H).
##STR00303##
5-(6-Trifluoromethyl-pyridin-2-ylamino)-pyrazolo[1,5-a]pyrimidine-3-carbo-
xylic acid (5-methyl-isoxazol-3-yl)-amide
[0398] Diisopropylethylamine (101 mg, 0.78 mmol, 0.8 equiv) was
added to a suspension of
5-(6-trifluoromethyl-pyridin-2-ylamino)-pyrazolo[1,5-a]pyrimidine-3-carbo-
xylic acid (0.98 mmol, 1.0 equiv) in phosphorus oxychloride (6 mL)
at 0.degree. C. The mixture was then heated to 90.degree. C. for 20
hours. After cooling, the solvent was removed under vacuum and the
residue azeotroped with dichloromethane, and then concentrated to
yield the crude acid chloride as a solid. Half of this crude
material (assumed to be 0.49 mmol) was used directly in the next
step.
[0399] A mixture of acid chloride (0.49 mmol, 1.0 equiv) and
5-amino-3,4-dimethyl-1,2-isoxazole (66.0 mg, 0.59 mmol, 1.2 equiv)
in pyridine (4 mL) was heated to 60.degree. C. for 90 minutes.
After cooling, the solvent was removed under vacuum, and the
isolated residue triturated (water) and re-triturated (methanol)
and the resultant solid was dried under vacuum to give 56.3 mg
(28%) of
5-(6-trifluoromethyl-pyridin-2-ylamino)-pyrazolo[1,5-a]pyrimidine-3-carbo-
xylic acid (5-methyl-isoxazol-3-yl)-amide. LCMS (ESI) m+H=418.1;
.sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 11.12 (s, 1H), 10.04
(s, 1H), 9.04 (d, 1H), 8.50 (s, 1H), 8.41 (d, 1H), 8.02 (t, 1H),
7.58 (d, 1H), 7.30 (d, 1H), 2.19 (s, 3H), 1.88 (s, 3H).
Example 231
##STR00304##
[0400] 5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(2-methyl-4-o-tolyl-thiazol-5-yl)-amide
##STR00305##
[0401] 3-Oxo-3-o-tolyl-propionic acid ethyl ester
[0402] To a stirred suspension of sodium hydride (60% dispersion in
mineral oil, 7.20 g, 180 mmol, 3.6 equiv) in toluene (300 mL) was
slowly added diethyl carbonate (23.6 g, 200 mmol, 4.0 equiv) at
ambient temperature. After stirring for 15 minutes, 2-methyl
acetophenone (6.70 g, 50.0 mmol, 1.0 equiv) was added, and the
resultant mixture heated to reflux for 18 hours. Glacial acetic
acid (15 mL) was then added drop-wise over 10 minutes, followed by
the cautious addition of ice cold water (150 mL). The resultant
mixture was extracted with ethyl acetate and the combined organic
extracts dried over magnesium sulfate and concentrated under
vacuum. The resultant residue was purified by flash column
chromatography on silica gel (gradient: 0 to 5% ethyl acetate in
pentane) to afford 7.94 g (77%) of 3-oxo-3-o-tolyl-propionic acid
ethyl ester as an oil (4:1 mixture of keto/enol tautomers). .sup.1H
NMR (Keto tautomer) (400 MHz, CDCl.sub.3) .delta.: 7.66 (s, 1H),
7.41 (s, 1H), 7.30-7.25 (m, 2H), 4.22-4.15 (m, 2H), 3.96-3.94 (m,
2H), 2.55 (s, 3H), 1.28-1.22 (m, 3H).
##STR00306##
2-Bromo-3-oxo-3-o-tolyl-propionic acid ethyl ester
[0403] Bromine (1.65 g, 10.3 mmol, 1.03 equiv) was added drop-wise
to a stirred solution of 3-oxo-3-o-tolyl-propionic acid ethyl ester
(2.06 g, 10.0 mmol, 1.0 equiv) in 1,4-dioxane (25 mL) at ambient
temperature. The mixture was stirred for 1 hour and then diluted
with tert-butyl methyl ether (50 mL). The resultant solution was
washed sequentially with water, aqueous potassium carbonate
solution and saturated aqueous sodium chloride solution. The
collected organic was dried over magnesium sulphate, filtered, and
concentrated under vacuum to afford 2.74 g (96%) of
2-bromo-3-oxo-3-o-tolyl-propionic acid ethyl ester as a dark brown
residue. .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 7.66 (d, 1H),
7.46-7.37 (m, 1H), 7.28 (m, 2H), 5.62 (s, 1H), 4.29-4.22 (q, 2H),
2.52 (s, 3H), 1.28-1.19 (t, 3H).
##STR00307##
2-Methyl-4-o-tolyl-thiazole-5-carboxylic acid ethyl ester
[0404] A stirred mixture of 2-bromo-3-oxo-3-o-tolyl-propionic acid
ethyl ester (2.74 g, 9.60 mmol, 1.0 equiv) and thioacetamide (0.76
g, 10.1 mmol, 1.05 equiv) in ethanol (30 mL) was heated to reflux
for 4 hours. The cooled mixture was filtered and concentrated under
vacuum. The residue was partitioned between ethyl acetate and water
and the organic phase was separated and then washed with saturated
aqueous sodium chloride solution. The collected organic was dried
over magnesium sulphate, filtered, and concentrated under vacuum.
The resultant residue was purified by flash column chromatography
on silica gel (gradient: 0 to 20% ethyl acetate in pentane) to
afford 0.84 g (34%) of 2-methyl-4-o-tolyl-thiazole-5-carboxylic
acid ethyl ester as an oil. LCMS (ESI) m+H=261.9; .sup.1H NMR (400
MHz, CDCl.sub.3) .delta.: 7.31-7.18 (m, 4H), 4.16 (q, 2H), 2.76 (s,
3H), 2.18 (s, 3H), 1.14 (t, 3H).
##STR00308##
2-Methyl-4-o-tolyl-thiazole-5-carboxylic acid
[0405] A mixture of 2-methyl-4-o-tolyl-thiazole-5-carboxylic acid
ethyl ester (0.84 g, 3.20 mmol, 1.0 equiv) and potassium hydroxide
(0.36 g, 6.40 mmol, 2.0 equiv) in 50% aqueous methanol (10 mL) was
heated to 50.degree. C. for 5 hours. The mixture was concentrated,
and the residue diluted with water and acidified to about pH 1 by
the addition of 6N HCl solution. The resultant solution was
extracted with ethyl acetate (3.times.). The combined extracts were
dried over magnesium sulphate, filtered, and concentrated under
vacuum to afford 0.61 g (81%) of
2-methyl-4-o-tolyl-thiazole-5-carboxylic acid as a solid. LCMS
(ESI) m+H=234.0; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.:
7.32-7.17 (m, 4H), 2.75 (s, 3H), 2.17 (s, 3H).
##STR00309##
(2-Methyl-4-o-tolyl-thiazol-5-yl)-carbamic acid tert-butyl
ester
[0406] A mixture of 2-methyl-4-o-tolyl-thiazole-5-carboxylic acid
(300 mg, 1.29 mmol, 1.0 equiv), diphenyl phosphorylazide (DPPA)
(354 mg, 1.29 mmol, 1.0 equiv), and triethylamine (130 mg, 1.29
mmol, 1.0 equiv) in tert-butanol (10 mL) was heated to 85.degree.
C. for 4 hours. After cooling, the mixture was diluted with water
and extracted with ethyl acetate (3.times.). The combined organic
extracts were dried over magnesium sulphate, filtered, and
concentrated under vacuum. The residue was purified by flash column
chromatography on silica gel (gradient: 2 to 25% ethyl acetate in
pentane) to give 352 mg (90%) of
(2-methyl-4-o-tolyl-thiazol-5-yl)-carbamic acid tert-butyl ester as
an oil. LCMS (ESI) m+H=305.1; .sup.1H NMR (400 MHz, CDCl.sub.3)
.delta.: 7.33-7.24 (m, 4H), 6.58 (s, 1H), 2.64 (s, 3H), 2.24 (s,
3H), 1.48 (s, 9H).
##STR00310##
2-Methyl-4-o-tolyl-thiazol-5-ylamine
[0407] A solution of (2-methyl-4-o-tolyl-thiazol-5-yl)-carbamic
acid tert-butyl ester (340 mg, 1.12 mmol, 1.0 equiv) in
dichloromethane (10 mL) was treated with trifluoroacetic acid (0.7
mL, 9.00 mmol, 8.0 equiv) for 24 hours at ambient temperature. The
mixture was concentrated under vacuum and the resultant residue
dissolved in dichloromethane and washed sequentially with 10%
aqueous potassium carbonate solution and saturated aqueous sodium
chloride solution. The collected organic was dried over magnesium
sulfate and filtered. The filtrate was passed through an
Isolute.RTM. SCX-2 cartridge (eluting with dichloromethane,
dichloromethane/methanol (1:1) and 2M ammonia in methanol) to
afford 62.0 mg (27%) of 2-methyl-4-o-tolyl-thiazol-5-ylamine as a
brown residue. LCMS (ESI) m+H=205.0; .sup.1H NMR (400 MHz,
CDCl.sub.3) .delta.: 7.33-7.18 (m, 4H), 3.54-3.45 (br, 2H), 2.58
(s, 3H), 2.29 (s, 3H).
##STR00311##
5-Chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(2-methyl-4-o-tolyl-thiazol-5-yl)-amide
[0408] To an ice-cooled solution of
2-methyl-4-o-tolyl-thiazol-5-ylamine (55.0 mg, 0.27 mmol, 1.0
equiv) and diisopropylethylamine (52.0 mg, 0.41 mmol, 1.5 equiv) in
dichloromethane (10 mL) was added a solution of
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (58.0 mg,
0.27 mmol, 1.0 equiv) in dichloromethane (5 mL). The reaction
mixture was warmed to ambient temperature and stirred overnight.
The mixture was washed with water and saturated aqueous sodium
chloride solution, dried over magnesium sulfate, filtered, and
concentrated under vacuum. Purification by flash column
chromatography on silica gel (gradient: 0 to 3% methanol in
dichloromethane) afforded 74.0 mg (73%) of
5-chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(2-methyl-4-o-tolyl-thiazol-5-yl)-amide as a solid. LCMS (ESI)
m+H=384.0 (mono chlorinated isotope pattern); .sup.1H NMR (400 MHz,
CDCl.sub.3) .delta.: 9.73 (s, 1H), 8.70 (s, 1H), 8.63 (d, 1H),
7.44-7.30 (m, 4H), 6.93 (d, 1H), 2.72 (s, 3H), 2.31 (s, 3H).
##STR00312##
5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(2-methyl-4-o-tolyl-thiazol-5-yl)-amide
[0409] A mixture of 5-chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic
acid (2-methyl-4-o-tolyl-thiazol-5-yl)-amide (74.0 mg, 0.19 mmol,
1.0 equiv) and 2M ammonia in propan-2-ol (3 mL) was sealed and
heated in a microwave reactor at 120.degree. C. for 1 hour. The
solvent was removed under vacuum, and the resultant residue
purified by flash column chromatography on silica gel (gradient: 0
to 5% methanol in dichloromethane) to afford 11.0 mg (16%) of
5-amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(2-methyl-4-o-tolyl-thiazol-5-yl)-amide. LCMS (ESI) m+H=365.1;
.sup.1H NMR (400 MHz, DMSO-d.sub.6) 6:10.35 (s, 1H), 8.66 (d, 1H),
8.23 (s, 1H), 7.47-7.37 (m, 4H), 6.38 (d, 1H), 2.61 (s, 3H), 2.20
(s, 3H).
Example 232
##STR00313##
[0410] 5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-amide
##STR00314##
[0411] 3-Dimethylamino-2-(2-trifluoromethyl-benzoyl)-acrylic acid
ethyl ester
[0412] A solution of 3-oxo-3-(2-trifluoromethyl-phenyl)-propionic
acid ethyl ester, prepared following an analogous procedure to that
outlined in Example 231, (3.14 g, 12.1 mmol, 1.0 equiv) and
1,1-dimethoxy-N,N-dimethylmethanamine (5.60 mL, 42.2 mmol, 3.5
equiv) in N,N-dimethylformamide was heated to reflux for 5 hours.
After cooling, the mixture was partitioned between ethyl acetate
and water. The organic phase was separated and washed sequentially
with water (4.times.) and saturated aqueous sodium chloride. The
collected organic was dried over anhydrous sodium sulfate,
filtered, and concentrated under vacuum to give 3.20 g (83%) of
3-dimethylamino-2-(2-trifluoromethyl-benzoyl)-acrylic acid ethyl
ester as an orange waxy solid. .sup.1H NMR (400 MHz, CDCl.sub.3)
.delta.: 7.86 (s, 1H), 7.67-7.64 (m, 1H), 7.51-7.41 (m, 2H), 7.35
(d, 1H), 3.81 (q, 2H), 3.42-3.17 (m, 3H), 3.11-2.93 (m, 3H),
0.78-0.69 (t, 3H).
##STR00315##
5-(2-Trifluoromethyl-phenyl)-isoxazole-4-carboxylic acid ethyl
ester
[0413] A mixture of
3-dimethylamino-2-(2-trifluoromethyl-benzoyl)-acrylic acid ethyl
ester (3.10 g, 9.80 mmol, 1.0 equiv) and hydroxylamine
hydrochloride (683 mg, 9.80 mmol, 1.0 equiv) in methanol (25 mL)
was heated to reflux for 90 minutes. After cooling, the mixture was
partitioned between water and ethyl acetate and separated. The
aqueous layer was extracted with ethyl acetate. The combined
organic extracts was washed with saturated aqueous sodium chloride,
dried over anhydrous sodium sulfate, filtered, and concentrated
under vacuum. Purification by flash column chromatography on silica
gel (gradient: 0 to 30% ethyl acetate in cyclohexane) gave 1.43 g
(51%) of 5-(2-trifluoromethyl-phenyl)-isoxazole-4-carboxylic acid
ethyl ester. .sup.1H NMR (300 MHz, CDCl.sub.3) .delta.: 8.38 (s,
1H), 7.69 (d, 1H), 7.61-7.47 (m, 2H), 7.27 (d, 1H), 3.93 (br, 2H),
0.87 (br, 3H).
##STR00316##
[5-(2-Trifluoromethyl-phenyl)-isoxazol-4-yl]-carbamic acid
tert-butyl ester
[0414] A mixture of
5-(2-trifluoromethyl-phenyl)-isoxazole-4-carboxylic acid ethyl
ester (1.43 g, 5.01 mmol, 1.0 equiv), 6M HCl aqueous solution (34
mL) and acetic acid (20 mL) were heated to reflux for 5.5 hours.
After cooling, the mixture was partitioned between water and ethyl
acetate and separated. The organic phase was washed sequentially
with water and saturated aqueous sodium chloride solution, dried
over anhydrous sodium sulfate, and concentrated under vacuum to
give 745 mg (58%) of crude
5-(2-trifluoromethyl-phenyl)-isoxazole-4-carboxylic acid which was
used without purification.
[0415] A mixture of
5-(2-trifluoromethyl-phenyl)-isoxazole-4-carboxylic acid (745 mg,
2.90 mmol, 1.0 equiv) and thionyl chloride (8 mL) was heated to
reflux for 3 hours. The mixture was cooled to room temperature and
concentrated under vacuum. The residue was dissolved in acetone (8
mL), cooled with an ice bath and sodium azide (339 mg, 5.20 mmol,
1.8 equiv) was added. The mixture was stirred for 1 hour at this
temperature, then 1 hour at ambient temperature. The reaction
mixture was diluted with ethyl acetate, and the resultant solution
was washed sequentially with water and saturated aqueous sodium
chloride solution. The collected organic was dried over anhydrous
sodium sulfate, filtered, and concentrated under vacuum. The
resultant residue was dissolved in tert-butanol (8 mL) and heated
to reflux for 16 hours. The reaction mixture was concentrated under
vacuum. Purification by flash column chromatography on silica gel
(gradient: 0 to 20% ethyl acetate in cyclohexane) gave 345 mg (36%)
of [5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-carbamic acid
tert-butyl ester. .sup.1H NMR (300 MHz, CDCl.sub.3) .delta.: 8.89
(s, 1H), 7.88-7.84 (m, 1H), 7.72-7.66 (m, 2H), 7.54-7.49 (m, 1H),
5.98 (s, 1H), 1.48 (s, 9H).
##STR00317##
5-Chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-amide
[0416] A mixture of
[5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-carbamic acid
tert-butyl ester (345 mg, 1.05 mmol, 1.0 equiv), 4M HCl in dioxane
(2 mL) in 1,4-dioxane (3 mL) was heated to 40.degree. C. for 20
hours. The mixture was concentrated under vacuum affording a
residue which was dissolved in dichloromethane (12 mL) and treated
with diisopropylethylamine (271 mg, 2.10 mmol, 2.0 equiv). The
mixture was cooled with an ice-bath, and a solution of
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (1.05 mmol,
1.0 equiv) in dichloromethane (6 mL) was added dropwise. The
resultant mixture was stirred at ambient temperature for 18 hours.
The solution was washed sequentially with 1M HCl aqueous solution,
saturated aqueous sodium bicarbonate solution and water. The
collected organic was dried over anhydrous sodium sulfate,
filtered, and concentrated under vacuum. The residue was triturated
(methanol), and the isolated solid was washed with methanol and
diethyl ether before drying under vacuum to give 367 mg (86%) of
5-chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-amide. LCMS (ESI)
m+H=408.0 (mono Cl); .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.:
9.50 (s, 1H), 9.35 (d, 1H), 9.22 (s, 1H), 8.71 (s, 1H), 8.03 (d,
1H), 7.97-7.82 (m, 3H), 7.38 (d, 1H).
##STR00318##
5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-amide
[0417] A mixture of 5-chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic
acid [5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-amide (200 mg,
0.49 mmol, 1.0 equiv) and 2M ammonia in propan-2-ol (4 mL) was
sealed and heated in a microwave reactor at 120.degree. C. for 40
minutes. The solvent was removed under vacuum and the resultant
residue was purified by flash column chromatography on silica gel
(gradient: 0 to 5% methanol in dichloromethane) to afford 58.6 mg
(31%) of 5-amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[5-(2-trifluoromethyl-phenyl)-isoxazol-4-yl]-amide. LCMS (ESI)
m+H=389.1; .sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 9.60 (s,
1H), 9.07 (s, 1H), 8.63 (d, 1H), 8.18 (s, 1H), 7.99 (d, 1H),
7.95-7.77 (m, 3H), 7.70-6.60 (br, 2H), 6.39 (d, 1H).
Example 233
##STR00319##
[0418] 5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(3-o-tolyl-isoxazol-4-yl)-amide
##STR00320##
[0419] 2-Methyl-benzaldehyde oxime
[0420] A mixture of o-tolualdehyde (5.00 g, 41.6 mmol, 1.0 equiv),
hydroxylamine hydrochloride (3.18 g, 45.8 mmol, 1.1 equiv) and
pyridine (3.29 g, 41.6 mmol, 1.0 equiv) in ethanol (100 mL) was
stirred at ambient temperature for 2 hours. The pH of the mixture
was adjusted to about 1 by the addition of 1M HCl aqueous solution.
The resultant solution was extracted with dichloromethane. The
collected organic extracts were dried over anhydrous sodium
sulfate, filtered, and concentrated under vacuum to give an oil
(6.30 g), which was used directly for the next step. LCMS (ESI)
m+H+MeOH=168.0; .sup.1H NMR (400 MHz, CDCl.sub.3) .delta.: 8.42 (s,
1H), 7.70-7.63 (d, 1H), 7.29-7.16 (m, 3H), 2.43 (s, 3H).
##STR00321##
N-Hydroxy-2-methylbenzenecarboximidoyl chloride
[0421] N-Chlorosuccinimide (2.22 g, 16.6 mmol, 1.0 equiv) was added
to a stirred solution of 2-methyl-benzaldehyde oxime (2.25 g, 16.6
mmol, 1.0 equiv) in N,N-dimethylformamide (30 mL) at ambient
temperature. Stirring was continued for 2 hours and the reaction
quenched (ice-water). The resultant mixture was extracted with
ethyl acetate. The combined organic extracts were washed
sequentially with water (6.times.) and saturated aqueous sodium
chloride solution (2.times.). The organic was then dried over
anhydrous sodium sulfate, filtered, and concentrated under vacuum
to give 2.07 g (74%) of N-hydroxy-2-methylbenzenecarboximidoyl
chloride as a green oil. .sup.1H NMR (300 MHz, CDCl.sub.3) .delta.:
8.14 (s, 1H), 7.48-7.44 (m, 1H), 7.37-7.20 (m, 3H), 2.43 (s,
3H).
##STR00322##
3-o-Tolyl-isoxazole-4-carboxylic acid ethyl ester
[0422] To a stirred solution of
N-hydroxy-2-methylbenzenecarboximidoyl chloride (2.07 g, 12.2 mmol,
1.0 equiv) in diethyl ether (15 mL) was added a solution of
3-pyrrolidin-1-yl-acrylic acid ethyl ester (prepared according to
the procedure described in U.S. Pat. No. 4,187,099) (2.06 g, 12.2
mmol, 1.0 equiv) and triethylamine (1.48 g, 12.2 mmol, 1.0 equiv)
in diethyl ether (30 mL) dropwise over 15 minutes. The resultant
mixture was stirred at ambient temperature for 16 hours,
partitioned between water and diethyl ether and separated. The
aqueous phase was extracted with diethyl ether (2.times.), and the
combined ethereal extracts were dried over anhydrous sodium
sulfate, filtered, and concentrated under vacuum. Purification by
flash column chromatography on silica gel (gradient: 0 to 20% ethyl
acetate in cyclohexane) gave 1.32 g (47%) of
3-o-tolyl-isoxazole-4-carboxylic acid ethyl ester. .sup.1H NMR (400
MHz, CDCl.sub.3) .delta.: 9.02 (s, 1H), 7.39-7.34 (m, 1H),
7.32-7.24 (m, 3H), 4.19 (q, 2H), 2.23 (s, 3H), 1.17 (t, 3H).
##STR00323##
(3-o-Tolyl-isoxazol-4-yl)-carbamic acid tert-butyl ester
[0423] A solution of 3-o-tolyl-isoxazole-4-carboxylic acid ethyl
ester (1.32 g, 5.71 mmol, 1.0 equiv), 6M HCl aqueous solution (40
mL) and acetic acid (24 mL) was heated to reflux for 5 hours. After
cooling, the mixture was partitioned between water and ethyl
acetate and separated. The organic phase was sequentially washed
with water and saturated aqueous sodium chloride solution. The
collected organic was then dried over anhydrous sodium sulfate,
filtered, and concentrated under vacuum to give 930 mg (80%) of
crude 3-o-tolyl-isoxazole-4-carboxylic acid which was used without
purification.
[0424] A mixture of 3-o-tolyl-isoxazole-4-carboxylic acid (930 mg,
4.58 mmol, 1.0 equiv), diphenylphosphonic azide (1.26 g, 4.58 mmol,
1.0 equiv) and triethylamine (463 mg, 4.58 mmol, 1.0 equiv) in
tert-butanol (40 mL) was heated to 85.degree. C. for 16 hours. The
mixture was concentrated under vacuum and the residue taken up into
ethyl acetate and sequentially washed with 1M HCl aqueous solution,
saturated aqueous sodium bicarbonate solution, water, and saturated
aqueous sodium chloride solution. The collected organic was dried
over anhydrous sodium sulfate, filtered, and concentrated under
vacuum. The residue was purified by flash column chromatography on
silica gel (gradient: 0 to 15% ethyl acetate in cyclohexane) to
afford 943 mg (75%) of (3-o-tolyl-isoxazol-4-yl)-carbamic acid
tert-butyl ester. LCMS (ESI) m+H=275.0; .sup.1H NMR (300 MHz,
CDCl.sub.3) .delta.: 8.92 (s, 1H), 7.47-7.29 (m, 4H), 5.87 (s, 1H),
2.29 (s, 3H), 1.48 (s, 9H).
##STR00324##
5-Chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(3-o-tolyl-isoxazol-4-yl)-amide
[0425] A mixture of (3-o-tolyl-isoxazol-4-yl)-carbamic acid
tert-butyl ester (500 mg, 1.82 mmol, 1.0 equiv), 4M HCl in dioxane
(4 mL) in 1,4-dioxane (5 mL) was stirred at ambient temperature for
22 hours and at 40.degree. C. for 1 hour. The mixture was
concentrated under vacuum affording a residue which was dissolved
in dichloromethane (15 mL) and treated with diisopropylethylamine
(523 mg, 4.05 mmol, 2.2 equiv). The mixture was cooled with an
ice-bath and a solution of
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (1.82 mmol,
1.0 equiv) in dichloromethane (10 mL) was added dropwise. The
reaction mixture was warmed to room temperature after the addition.
After 65 hours, the solution was sequentially washed with 1M HCl
aqueous solution, saturated aqueous sodium bicarbonate solution,
water, and saturated aqueous sodium chloride solution. The organic
was dried over anhydrous sodium sulfate, filtered, and concentrated
under vacuum. The residue was triturated (methanol) to give 444 mg
(70%) of 5-chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(3-o-tolyl-isoxazol-4-yl)-amide. LCMS (ESI) m+H=354.2 (mono Cl);
.sup.1H NMR (300 MHz, DMSO-d.sub.6) .delta.: 9.47 (s, 1H), 9.36 (d,
1H), 9.11 (s, 1H), 8.72 (s, 1H), 7.53-7.40 (m, 4H), 7.37 (d, 1H),
2.31 (s, 3H).
##STR00325##
5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(3-o-tolyl-isoxazol-4-yl)-amide
[0426] A mixture of 5-chloro-pyrazolo[1,5-a]pyrimidine-3-carboxylic
acid (3-o-tolyl-isoxazol-4-yl)-amide (200 mg, 0.57 mmol, 1.0 equiv)
and 2M ammonia in propan-2-ol (3 mL) was heated in a sealed vial at
65.degree. C. for 18 hours and then in a microwave reactor at
100.degree. C. for 30 minutes. After cooling, the resultant
precipitate was isolated by filtration. The solids were
sequentially washed with propan-2-ol and diethyl ether, and dried
under vacuum at 55.degree. C. to yield 153 mg (80%) of
5-amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
(3-o-tolyl-isoxazol-4-yl)-amide as a solid. LCMS (ESI) m+H=335.1;
.sup.1H NMR (400 MHz, DMSO-d.sub.6) .delta.: 9.51 (s, 1H), 9.34 (s,
1H), 8.65 (d, 1H), 8.21 (s, 1H), 7.58-7.44 (m, 4H), 7.01 (br, 1H),
6.39 (d, 1H), 2.27 (s, 3H).
Example 234
##STR00326##
[0427] 5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[2-(3-trifluoromethyl-phenyl)-2H-pyrazol-3-yl]-amide
##STR00327##
[0428] Ethyl
5-amino-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-4-carboxylate
[0429] To a solution of ethyl 2-cyano-3-ethoxyacrylate (0.81 g, 4.8
mmol) in ethanol (50 mL) was added
3-(trifluoromethyl)phenylhydrazine (0.85 g, 4.8 mmol). The
resultant reaction mixture was refluxed for 24 hours under a
nitrogen atmosphere. The mixture was cooled to room temperature and
concentrated under reduced pressure to afford 0.94 g (yield: 66%),
which was used without further purification. MS (ESI) m/z:300.3
##STR00328##
1-(3-(Trifluoromethyl)phenyl)-1H-pyrazol-5-amine
[0430] A solution of ethyl
5-amino-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-4-carboxylate
(0.9 g, 3 mmol) in dioxane (20 mL) saturated with HCl was heated to
150.degree. C. for 5 hours in a sealed tube. The reaction mixture
was then cooled and concentrated in vacuo. The residue diluted with
water, and the aqueous solution was extracted with ethyl acetate
(3.times.50 mL). The combined organic extracts was dried over
magnesium sulfate, filtered, and concentrated. The resultant
residue was purified by flash column chromatography (5:1 ethyl
acetate/petroleum ether) to afford product (430 mg, 63%). MS (ESI)
m/z:228.1
##STR00329##
5-Chloro-N-(1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-5-yl)pyrazolo[1,5-a]-
pyrimidine-3-carboxamide
[0431] To a stirred solution of
1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-5-amine (200 mg, 0.88
mmol) in dichloromethane (30 mL) was added
5-chloropyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (215 mg, 1.0
mmol) and diisopropylethylamine (130 mg, 1.0 mmol). The mixture was
heated to 50.degree. C. overnight. After cooling to room
temperature, the mixture was concentrated to afford crude
5-chloro-N-(1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-5-yl)pyrazolo[1,5-a]-
pyrimidine-3-carboxamide (210 mg, yield 58%), which was used for
the next step without further purification. MS (ESI) m/z:407.2
##STR00330##
5-Amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[2-(3-trifluoromethyl-phenyl)-2H-pyrazol-3-yl]-amide
[0432] A solution of
5-chloro-N-(1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-5-yl)pyrazolo[1,5-a]-
pyrimidine-3-carboxamide (210 mg, 0.52 mmol) in ethanol (20 mL)
saturated with ammonia was heated to 100.degree. C. overnight in a
sealed tube. After cooling to room temperature, solvent was removed
under reduced pressure, and the resultant residue was purified by
preparative HPLC to afford
5-amino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
[2-(3-trifluoromethyl-phenyl)-2H-pyrazol-3-yl]-amide (8 mg, yield:
4%). .sup.1H NMR (DMSO, 400 MHz): .delta. 9.94 (s, 1H), 8.62 (d,
J=7.6 Hz, 1H), 8.16 (s, 1H), 7.49-7.69 (m, 8H), 6.53 (s, 1H), 6.37
(d, J=7.6 Hz, 1H). MS (ESI) m/z: 388.1
[0433] Examples 235-452 shown in Table 2 were prepared according to
the above methods.
TABLE-US-00002 TABLE 2 Ex # Structure Name LCMS (ESI) m/z 235
##STR00331## 5-Amino-pyrazol[1,5- a]pyrimidine-3-carboxylic acid
[3-(5-chloro-2-methyl-phenyl)- 1-(2-hydroxy-ethyl)-1H-pyrazol-
4-yl]-amide 412.2 236 ##STR00332## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (1-methyl-3-o-tolyl-1H-pyrazol-
4-yl)-amide 348.1 237 ##STR00333## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [5-(2,5-dichloro-phenyl)-1-
methyl-1H-pyrazol-4-yl]-amide 402.0 238 ##STR00334##
5-(6-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (5-methyl-isoxazol-3-yl)-amide 404.0
239 ##STR00335## 5-(6-Trifluoromethyl-pyridin-2-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
isoxazol-3-ylamide 390.0 240 ##STR00336## 5-(3-Trifluoromethyl-
phenylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(3-methyi-isoxazol-5-yl)-amide 403.0 241 ##STR00337##
5-(3-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (3-methyl-isoxazol-5-yl)-amide 404.0
242 ##STR00338## 5-(4-Methoxy-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (3-methyl-isoxazol-5-yl)-amide 366.1
243 ##STR00339## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [5-(3-chloro-phenyl)-isoxazol-4- yl]-amide 355.1 244
##STR00340## 5-(Pyridin-2-ylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (3-methyl- isoxazol-5-yl)-amide 336.2 245
##STR00341## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(5-o-tolyl-isoxazol-4-yl)-amide 335.2 246 ##STR00342##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-chloro-5-methyl-phenyl)- 5-methyl-2H-pyrazol-3-yl]- amide
382.1 247 ##STR00343## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [3-(2,5-dimethyl-phenyl)-1H-
pyrazol-4-yl]-amide 348.1 248 ##STR00344## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [3-(2,5-dichloro-phenyl)-1H-
pyrazol-4-yl]-amide 388.0 249 ##STR00345## 5-(2,5-Difluoro-
benzenesulfonylamino)- pyrazolo[1,5-a]pyrimidine-3- carboxylic acid
tert-butylamide 410.1 250 ##STR00346## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [3-(3-chloro-phenyl)-isoxazol-4-
yl]-amide 355.1 251 ##STR00347## 6-Chloro-5-(2,5-difluoro-
benzylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(tetrahydro-pyran-4-yl)-amide 422.1 252 ##STR00348##
5-Amino-6-chloro-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(tetrahydro-pyran-4-yl)-amide 296.1 253 ##STR00349##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[3-(2-trifluoromethyl-phenyl)- isoxazol-4-yl]-amide 389.1 254
##STR00350## 5-(4-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (3-methyl-isoxazol-5-yl)-amide 404.1
255 ##STR00351## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [4-(3-chloro-phenyl)-2-methyl- thiazol-5-yl]-amide 385.1 256
##STR00352## 5-(Toluene-2-sulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid isopropylamide 374.1
257 ##STR00353## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(3,5-dichloro-phenyl)-2H- pyrazol-3-yl]-amide 388.1 258
##STR00354## 5-Amino-6-chloro-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2,5-difluoro-phenyl)-2H-
pyrazol-3-yl]-amide 259 ##STR00355## 5-Amino-6-chloro-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (5-methyl-2-o-tolyl-2H-pyrazol-
3-yl)-amide 382.0 260 ##STR00356## 5-(2-Methyl-2H-pyrazole-3-
sulfonylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 378.1 261 ##STR00357## 5-(Toluene-2-sulfonylamino)-
pyrazolo[l,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 414.1
262 ##STR00358## 5-Benzenesulfonylamino-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 400.1
263 ##STR00359## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-iodo-phenyl)-2H-pyrazol- 3-yl]-amide 446.0 264
##STR00360## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2,4-difluoro-phenyl)-2H- pyrazol-3-yl]-amide 355.7 265
##STR00361## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-fluoro-phenyl)-2H- pyrazol-3-yl]-amide 338.2 266 ##STR00362##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2,4-difluoro-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide 369.9 267
##STR00363## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2,5-dichloro-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide 402.2 268
##STR00364## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(3,5-dimethyl-phenyl)-2H- pyrazol-3-yl]-amide 347.9 269
##STR00365## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(2-m-tolyl-2H-pyrazol-3-yl)- amide 333.9 270 ##STR00366##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(2-o-tolyl-2H-pyrazol-3-yl)- amide 334.0 271 ##STR00367##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(3-chloro-phenyl)-2H- pyrazolo-yl]-amide 354.0 272 ##STR00368##
5-(4-Methoxy-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid cyclohexylamide 367.2 273
##STR00369## 5-(6-Methyl-pyridin-2-ylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 351.2
274 ##STR00370## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(3,5-difluoro-phenyl)-2H- pyrazol-3-yl]-amide 356.6 275
##STR00371## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[3-(3-cyano-phenyl)-1H- pyrazol-4-yl]-amide 345.1 276 ##STR00372##
5-(Pyridin-2-ylamino)- pyrazolo[1,5-a]pyrimidine-3- carboxylic acid
cyclohexylamide 337.2 277 ##STR00373## 5-Amino-pyrazolo[1,5-
a]pyrimidin-3-carboxylic acid [2-(2,5-dichloro-phenyl)-2H-
pyraxol-3-yl]-amide 388.0 278 ##STR00374## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-trifluoromethyl-phenyl)-
2H-pyrazol-3-yl]-amide 388.0 279 ##STR00375##
5-(Toluene-2-sulfonylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid tert-butylamide 388.2 280 ##STR00376##
5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid tert-butylamide 374.2 281 ##STR00377## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2,5-dimethyl-phenyl)-2H-
pyrazol-3-yl]-amide 348.0 282 ##STR00378## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-chloro-phenyl)-2H-
pyrazol-3-yl]-amide 353.9 283 ##STR00379##
5-(6-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (3-methyl-isoxazol-5-yl)-amide 404.2
284 ##STR00380## 5-(6-Trifluoromethyl-pyridin-2-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(2,5-dimethyl-2H-pyrazol-3-yl)- amide 417.2 285 ##STR00381##
5-(6-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid pyridin-3-ylamide 400.2 286
##STR00382## 5-(4-Trifluoromethyl-pyrimidin-
2-ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(tetrahydro-pyran-4-yl)-amide 408.2 287 ##STR00383##
5-tert-Butylamino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[3-(3-chloro-phenyl)-1-methyl- 1H-pyrazol-4-yl]-amide 424.1 288
##STR00384## 5-(4,7-Difluoro-indan-1- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (tetrahydro-pyran-4-yl)-amide 414.1
289 ##STR00385## 5-(4,7-Difluoro-indan-1- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
448.1 290 ##STR00386## 5-(2-Trifluoromethyl-pyridin-4-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 379.2 291 ##STR00387##
5-(4-Trifluoromethyl-pyrimidin- 2-ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
442.1 292 ##STR00388## 5-(6-Trifluoromethyl-pyridin-2-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4,4-difluoro-cyclohexyl)-amide 441.1 293 ##STR00389##
5-(6-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (tetrahydro-pyran-4-yl)-amide 407.2
294 ##STR00390## 5-(6-Trifluoromethyl-pyridin-2-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
isopropylamide 365.1 295 ##STR00391##
5-(6-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid cyclohexylamide 405.2 296
##STR00392## 5-(5-Trifluoromethyl-pyridin-3- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid tert-butylamide 379.2 297
##STR00393## 5-(Indan-2-ylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (tetrahydro- pyran-4-yl)-amide 378.2 298
##STR00394## 5-Cyclopentylamino- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (tetrahydro- pyran-4-yl)-amide 330.1 299
##STR00395## 5-(Indan-1-ylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (4-hydroxy- cyclohexyl)-amide 392.2 300
##STR00396## 5-(2,3-Dihydro-benzofuran-3- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
414.1 301 ##STR00397## 5-(2,3-Dihydro-benzofuran-3-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(tetrahydro-pyran-4-yl)-amide 380.1 302 ##STR00398##
5-Cyclohexylamino- pyrazolo[1,5-a]pyrimidine-3- carboxylic acid
(4,4-difluoro- cyclohexyl)-amide 378.2 303 ##STR00399##
5-Cyclopentylamino- pyrazolo[1,5-a]pyrimidine-3- carboxylic acid
(4,4-difluoro- cyclohexyl)-amide 364.1 304 ##STR00400##
5-(Indan-2-ylamino)- pyrazolo[1,5-a]pyrimidine-3- carboxylic acid
(4,4-difluoro- cyclohexyl)-amide 412.1 305 ##STR00401##
5-(4-Hydroxy- cyclohexylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
394.2 306 ##STR00402## 5-(Indan-1-ylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid pyridin-3- ylamide
371.1 307 ##STR00403## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-chloro-5-trifluoromethyl-
phenyl)-5-methyl-2H-pyrazol-3 yl]-amide 436.0 308 ##STR00404##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2,5-difluoro-phenyl)-2H- pyrazol-3-yl]-amide 356.0 309
##STR00405## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 234.3 310 ##STR00406##
5-(6-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid tert-butylamide 379.2 311
##STR00407## 5-(4-Trifluoromethyl-pyridin-2- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid tert-butylamide 379.2 312
##STR00408## 5-(Tetrahydro-pyran-4- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
380.1 313 ##STR00409## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(3-cyano-phenyl)-5-methyl-
2H-pyrazol-3-yl]-amide 359.1
314 ##STR00410## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(4-chloro-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 368.0
315 ##STR00411## 5-(6-Fluoro-chroman-4- ylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (tetrahydro-pyran-4-yl)-amide 412.1
316 ##STR00412## 5-(1,2,3,4-Tetrahydro- naphthalen-1-ylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid (4,4-difluoro-
cyclohexyl)-amide 426.2 317 ##STR00413## 5-(6-Fluoro-chroman-4-
ylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4,4-difluoro-cyclohexyl)-amide 446.1 318 ##STR00414##
5-[(S)-1-(2,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (tetrahydro-pyran-4-yl)-amide 402.1
319 ##STR00415## 5-(Indan-1-ylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (tetrahydro- pyran-4-yl)-amide 378.1 320
##STR00416## 5-(Indan-1-ylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (4,4-difluoro- cyclohexyl)-amide 412.2 321
##STR00417## 5-[(R)-1-(2,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(tetrahydro-pyran-4-yl)-amide 402.1 322 ##STR00418##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(1,1-dioxo-tetrahydro- thiophen-3-yl)-5-methyl-2H-
pyrazol-3-yl]-amide 376.1 323 ##STR00419## 5-(4-Methylsulfanyl-
phenylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 356.1 324 ##STR00420## 5-(3-Trifluoromethyl-
phenylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4-hydroxy-cyclohexyl)-amide 420.1 325 ##STR00421##
5-[1-(2,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid tert-butylamide 374.1 326
##STR00422## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(4-cyano-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 359.0 327
##STR00423## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-cyano-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 359.0 328
##STR00424## 5-Amino-pyraxolo[1,5- a]pyrimidine-3-carboxylic acid
[5-(3-fluoro-phenyl)-1H- pyrazol-4-yl]-amide 338.1 329 ##STR00425##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[5-(3-fluoro-phenyl)-1-methyl- 1H-pyrazol-4-yl]-amide 352.1 330
##STR00426## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[3-(3-fluoro-phenyl)-1-methyl- 1H-pyrazol-4-yl]-amide 352.0 331
##STR00427## 5-[1-(2,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4-hydroxy-cyclohexyl)-amide 416.2
332 ##STR00428## 5-[1-(2,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
pyridin-3-ylamide 395.1 333 ##STR00429## 5-(3-Trifluoromethyl-
phenylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(tetrahydro-pyran-4-yl)-amide 406.2 334 ##STR00430##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(5-methyl-2-phenyl-2H-pyrazol- 3-yl)-amide 334.2 335 ##STR00431##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(4-fluoro-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 352.2 336
##STR00432## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(3-fluoro-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 352.2 337
##STR00433## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-chloro-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 368.2 338
##STR00434## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(2-phenyl-2H-pyrazol-3-yl)- amide 320.1 339 ##STR00435##
5-(4-Methylsulfanyl- phenylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
418.1 340 ##STR00436## 5-[(R)-1-(2,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4,4-difluoro-cyclohexyl)-amide 436.1 341 ##STR00437##
5-[1-(2,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (tetrahydro-pyran-4-yl)-amide 402.1
342 ##STR00438## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid (5-methyl-2-m-tolyl-2H-pyrazol- 3-yl)-amide 348.1 343
##STR00439## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(5-methyl-2-o-tolyl-2H-pyrazol- 3-yl)-amide 348.1 344 ##STR00440##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(5-phenyl-2H-pyrazol-3-yl)- amide 320.1 345 ##STR00441##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[3-(3-chloro-phenyl)-1H- pyrazol-4-yl]-amide 354.0 346 ##STR00442##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[5-(3-chloro-phenyl)-1-methyl- 1H-pyrazol-4-yl]-amide 348.1 347
##STR00443## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[3-(3-chloro-phenyl)-1-methyl- 1H-pyrazol-4-yl]-amide 368.1 348
##STR00444## 5-[N'-(2,5-Difluoro-phenyl)- hydrazino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid tert-butylamide 361.1 349
##STR00445## 5-(N'-Pyridin-2-yl-hydrazino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 326.1
350 ##STR00446## 5-(1-Pyridin-3-yl-ethylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 339.2
351 ##STR00447## 5-(1-Pyridin-2-yl-ethylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 339.1
352 ##STR00448## 5-[(2-Methyl-5-phenyl-2H-
pyrazol-3-ylmethyl)-amino]- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid cyclohexylamide 430.2 353 ##STR00449##
5-[(2-Methyl-2H-pyrazol-3- ylmethyl)-amino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid cyclohexylamide 354.2 354
##STR00450## 5-[(3-Methyl-3H-imidazol-4-
ylmethyl)-amino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
cyclohexylamide 354.2 355 ##STR00451##
5-[(2,5-Dimethyl-2H-pyrazol-3- ylmethyl)-amino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid cyclohexylamide 368.2 356
##STR00452## 5-[(R)-1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
pyridin-3-ylamide 395.1 357 ##STR00453##
5-[(S)-1-(3,5-Difluoro-phenyl)- propylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
450.2 358 ##STR00454## 5-[(R)-1-(3,5-Difluoro-phenyl)-
propylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4,4-difluoro-cyclohexyl)-amide 450.2 359 ##STR00455##
5-[1-(3,5-Difluoro-phenyl)- propylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
450.2 360 ##STR00456## 5-[(R)-1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4-hydroxy-cyclohexyl)-amide 416.2 361 ##STR00457##
5-[(R)-1-(3,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (tetrahydro-pyran-4-yl)-amide 402.2
362 ##STR00458## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid (5-methyl-2-pyridin-2-yl-2H- pyrazol-3-yl)-amide 335.1 363
##STR00459## 5-[(2-Dimethylamino-pyridin-3-
ylmethyl)-amino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 368.2 364 ##STR00460##
5-[(R)-1-(3,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid tert-butylamide 374.2 365
##STR00461## 5-[(S)-1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4,4-difluoro-cyclohexyl)-amide 436.1 366 ##STR00462##
5-[(R)-1-(3,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
436.1 367 ##STR00463## 5-(2-Methyl-benzylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid (4,4-difluoro-
cyclohexyl)-amide 400.1 368 ##STR00464##
5-[(Pyridin-2-ylmethyl)-amino]- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (4,4-difluoro- cyclohexyl)-amide 386.9 369
##STR00465## 5-[(Pyridin-2-ylmethyl)-amino]-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 224.9
370 ##STR00466## 5-[1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(4-hydroxy-cyclohexyl)-amide 416.2 371 ##STR00467##
5-[1-(3,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
436.0 372 ##STR00468## 5-[1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
cyclopropylamide 358.0 373 ##STR00469## 5-[1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 373.9 374 ##STR00470##
5-(3,5-Difluoro-benzylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid pyridin-2- ylamide 381.1 375 ##STR00471##
5-(3,5-Difluoro-benzylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid cyclopropylamide 343.9 376 ##STR00472##
5-(3,5-Difluoro-benzylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid amide 303.9 377 ##STR00473##
5-[(3-Methyl-pyridin-2- ylmethyl)-amino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid isopropylamide 325.1 378
##STR00474## 5-(2-Trifluoromethyl- benzylamino)-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid (4,4-difluoro-cyclohexyl)-amide
454.1 379 ##STR00475## 5-(2-Fluoro-6-methoxy-
benzylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
isopropylamide 358.1 380 ##STR00476## 5-(2-Dimethylamino-
benzylamino)-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
tert-butylamide 367.2 381 ##STR00477##
5-(2,5-Difluoro-benzylamino)- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid tert-butylamide 360.1 382 ##STR00478##
5-(2-Methoxy-benzylamino)- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid tert-butylamide 354.2 383 ##STR00479##
5-(2-Hydroxy-benzylamino)- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid tert-butylamide 340.1 384 ##STR00480##
5-[(Pyridin-2-ylmethyl)-amino]- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (4-hydroxy- cyclohexyl)-amide 367.1 385
##STR00481## 5-[(Pyridin-2-ylmethyl)-amino]-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid pyridin-3- ylamide
346.0 386 ##STR00482## 5-[(Pyridin-2-ylmethyl)-amino]-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid pyridin-2- ylamide
346.0 387 ##STR00483## 5-[1-(3,5-Difluoro-phenyl)-
ethylamino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
pyridin-3-ylamide 395.0 388 ##STR00484##
5-[1-(3,5-Difluoro-phenyl)- ethylamino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid pyridin-2-ylamide 395.1 389
##STR00485## 5-(3,5-Difluoro-phenylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid isopropylamide 332.0
390 ##STR00486## 5-[(3-Chloro-pyridin-2-
ylmethyl)-amino]-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
isopropylamide 344.9 391 ##STR00487## 5-[(3-Fluoro-pyridin-2-
ylmethyl)-amino]-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid isopropylamide 329.4 392
##STR00488## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(2-tert-butyl-5-methyl-2H- pyrazol-3-yl)-amide 314.1 393
##STR00489## 5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (4,4-difluoro- cyclohexyl)-amide 436.2 394
##STR00490## 5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (1-methyl- piperidin-4-yl)-amide 415.1 395
##STR00491## 5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3-
carboxylic acid (4-methyl- cyclohexyl)-amide 414.1 396 ##STR00492##
5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid (2-methyl- cyclohexyl)-amide 414.2 397 ##STR00493##
5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid bicyclo[2.2.1]hept-2-ylamide 412.2 398 ##STR00494##
5-Benzenesulfonylamino- pyrazolo[1,5-a]pyrimidine-3- carboxylic
acid piperidin-4- ylamide 401.0 399 ##STR00495##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
(2-chroman-4-yl-5-methyl-2H- pyrazol-3-yl)-amide 389.8 400
##STR00496## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-ethynyl-6-fluoro-phenyl)- 5-methyl-2H-pyrazol-3-yl]- amide
376.1 401 ##STR00497## 5-(Pyridine-3-sulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 375.1
402 ##STR00498## 5-Benzenesulfonylamino-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclopentylamide 385.8
403 ##STR00499## 5-Benzenesulfonylamino-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid phenylamide 393.7 404
##STR00500## 5-(2-Fluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 418.1
405 ##STR00501## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-ethynyl-6-methyl-phenyl)- 5-methyl-2H-pyrazol-3-yl]-
amide 372.0 406 ##STR00502## 5-(2-Phenyl-azetidin-1-yl)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 376.2
407 ##STR00503## 5-Amino-pyrazolo[1,5 - a]pyrimidine-3-carboxylic
acid [2-(2-chloro-6-iodo-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide
493.7 408 ##STR00504## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-cyclopropyl-phenyl)-5-
methyl-2H-pyrazol-3-yl]-amide 373.8 409 ##STR00505##
5-(3,4-Difluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 436.1
410 ##STR00506## 5-(3,4-Dichloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.0
411 ##STR00507## 5-(3,5-Difluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 436.1
412 ##STR00508## 5-(Butane-1-sulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 380.1
413 ##STR00509## 5-(2,4-Difluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 436.1
414 ##STR00510## 5-(2,5-Dichloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.0
415 ##STR00511## 5-(2,4-Dichloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.0
416 ##STR00512## 5-(2,5-Difluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 436.1
417 ##STR00513## 5-(2,6-Dichloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.0
418 ##STR00514## 5-(3,5-Dichloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.0
419 ##STR00515## 5-(2,3-Dichloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.0
420 ##STR00516## 5-(2,6-Difluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 436.1
421 ##STR00517## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-fluoro-6-methyl-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide
366.1 422 ##STR00518## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [5-methyl-2-(2-
trifluoromethoxy-phenyl)-2H- pyrazol-3-yl]-amide 418.1 423
##STR00519## 5-(3-Trifluoromethoxy- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 484.1
424 ##STR00520## 5-(2-Trifluoromethyl- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.1
425 ##STR00521## 5-(3-Trifluoromethyl- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 468.1
426 ##STR00522## 5-(Toluene-3-sulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid cyclohexylamide 414.1
427 ##STR00523## 5-(2-Chloro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 408.0
428 ##STR00524## 5-(2-Fluoro- benzenesulfonylamino)-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 392.1
429 ##STR00525## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-bromo-6-fluoro-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide
429.1 430 ##STR00526## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-chloro-6-trifluoromethyl-
phenyl)-5-methyl-2H-pyrazol-3- yl]-amide 436.1 431 ##STR00527##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-chloro-6-fluoro-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide
386.1 432 ##STR00528## 5-Methanesulfonylamino-
pyrazolo[1,5-a]pyrimidine-3- carboxylic acid tert-butylamide 312.1
433 ##STR00529## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2,6-dibromo-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide 491.7
434 ##STR00530## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-methoxy-6-methyl- phenyl)-5-methyl-2H-pyrazol-3-
yl]-amide 378.2 435 ##STR00531## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-bromo-6-methyl-phenyl)-
5-methyl-2H-pyrazol-3-yl]- amide 425.8 436 ##STR00532##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2,6-dichloro-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide 402.1 437
##STR00533## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-chloro-6-methyl-phenyl)- 5-methyl-2H-pyrazol-3-yl]- amide
382.1 438 ##STR00534## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-methoxy-phenyl)-5-
methyl-2H-pyrazol-3-yl]-amide 364.0 439 ##STR00535##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-chloro-5-cyano-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide 393.2
440 ##STR00536## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-ethynyl-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 358.0
441 ##STR00537## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2-ethyl-phenyl)-5-methyl- 2H-pyrazol-3-yl]-amide 362.2 442
##STR00538## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[5-methyl-2-(2-methylsulfanyl- phenyl)-2H-pyrazol-3-yl]-amide 380.1
443 ##STR00539## 5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic
acid [2-(2,6-dimethyl-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide
362.2 444 ##STR00540## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-iodo-phenyl)-5-methyl-
2H-pyrazol-3-yl]-amide 460.1 445 ##STR00541## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-bromo-phenyl)-5-methyl-
2H-pyrazol-3-yl]-amide 412.1 446 ##STR00542## 5-Amino-pyrazolo[1,5-
a]pyrimidine-3-carboxylic acid [2-(2-chloro-4-cyano-phenyl)-5-
methyl-2H-pyrazol-3-yl]-amide 393.0 447 ##STR00543##
5-Amino-pyrazolo[1,5- a]pyrimidine-3-carboxylic acid
[2-(2-isopropyl-phenyl)-5- methyl-2H-pyrazol-3-yl]-amide 376.3 448
##STR00544## 5-(1-(3,5- difluorophenyl)ethylamino)-N-
phenylpyrazolo[1,5- a]pyrimidine-3-carboxamide 394.1 449
##STR00545## 5-(1-(3,5- difluorophenyl)ethylamino)-N-
(3-fluorophenyl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 412.1 450
##STR00546## 5-(3,5-difluorobenzylamino)-N- (4-
hydroxycyclohexyl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 402.2
451 ##STR00547## 5-(3,5-difluorobenzylamino)-N-
(tetrahydro-2H-pyran-4- yl)pyrazolo[1,5-a]pyrimidine-3- carboxamide
387.9 452 ##STR00548## 5-(3,5-difluorobenzylamino)-N-
(pyridin-3-yl)pyrazolo[1,5- a]pyrimidine-3-carboxamide 380.9
[0434] The compounds of Examples 1-452 were tested for their
capacity to inhibit a JAK kinase activity. The compounds of
Examples 1-452 were found to have a K.sub.i of less than about 1 M
in JAK kinase activity assays (e.g. see Examples A-C). The
compounds of the present invention are therefore useful as JAK
kinase inhibitors.
[0435] Table 3 below shows enzymatic activity data (K.sub.i) for
certain compounds of the present invention run in the above assays
(Examples A-C).
TABLE-US-00003 TABLE 3 Example JAK1 JAK2.sub.i JAK3 TYK2.sub.i 240
0.036 uM 0.0032 uM 0.0951 uM 0.0624 uM 231 0.0152 uM 0.0018 uM
0.0124 uM 0.0438 uM 225 0.0029 uM 0.0003 uM 0.0029 uM 0.0073 uM 226
0.0074 uM 0.0005 uM 0.0157 uM 0.0328 uM 248 0.0028 uM 0.0001 uM
0.0017 uM 0.0041 uM 250 0.0284 uM 0.0020 uM 0.0556 uM 0.0361 uM 277
0.0176 uM 0.0009 uM 0.0254 uM 0.0435 uM 343 0.0299 uM 0.0042 uM
0.0286 uM 0.0976 uM 297 0.0466 uM 0.0016 uM 0.0397 uM 0.152 uM 299
0.0287 uM 0.0008 uM 0.0145 uM 0.0509 uM
[0436] Table 4 below shows certain cellular pharmacological
activity data (EC.sub.50) for compounds of the present invention
run in the above cellular assays (Example D).
TABLE-US-00004 TABLE 4 pSTAT5 EPO pSTAT5 IL6-pSTAT3 IL12-pSTAT4
Example SET2 TF1 TF1 NK92 240 0.365 uM 0.735 uM 1.6 uM 0.579 uM 231
0.0802 uM 0.23 uM 0.371 uM 3.3 uM 225 0.0128 uM 0.0404 uM 0.13 uM
0.119 uM 226 0.017 uM 0.103 uM 0.17 uM 0.336 uM 248 0.018 uM 0.0553
uM 0.165 uM 0.158 uM 250 0.158 uM 0.34 uM 0.839 uM 0.105 uM 277
0.0434 uM 0.148 uM 0.514 uM 0.603 uM 343 0.301 uM 0.368 uM 0.380 uM
5.3 uM 297 0.170 uM 0.207 uM 1.4 uM 1.1 uM 299 0.256 uM 0.228 uM
1.88 uM 1.77 uM
[0437] Although the invention has been described and illustrated
with a certain degree of particularity, it is understood that the
present disclosure has been made only by way of example, and that
numerous changes in the combination and arrangement of parts can be
resorted to by those skilled in the art without departing from the
spirit and scope of the invention, as defined by the claims.
[0438] Reference is made to International Application Serial No.
PCT/US2009/063014 filed Nov. 2, 2009 and U.S. Provisional
Application Ser. No. 61/110,497, filed Oct. 31, 2008, which are
incorporated herein by reference in its entirety for all
purposes.
* * * * *