U.S. patent application number 11/943315 was filed with the patent office on 2008-05-22 for novel non-imidazole compounds.
This patent application is currently assigned to Schering Corporation. Invention is credited to Robert G. Aslanian, Michael Y. Berlin, Christopher W. Boyce, Pietro Mangiaracina, Kevin D. McCormick, Mwangi W. Mutahi, John J. Piwinski, Stuart B. Rosenblum, Neng-Yang Shih, Pauline C. Ting, Wing C. Tom.
Application Number | 20080119487 11/943315 |
Document ID | / |
Family ID | 22908389 |
Filed Date | 2008-05-22 |
United States Patent
Application |
20080119487 |
Kind Code |
A1 |
Aslanian; Robert G. ; et
al. |
May 22, 2008 |
NOVEL NON-IMIDAZOLE COMPOUNDS
Abstract
Disclosed are novel compounds of the formula ##STR00001## Also
disclosed are pharmaceutical compositions comprising the compounds
of Formula I. Also disclosed are methods of treating various
diseases or conditions, such as, for example, allergy,
allergy-induced airway responses, and congestion (e.g., nasal
congestion) using the compounds of Formula I. Also disclosed are
methods of treating various diseases or conditions, such as, for
example, allergy, allergy-induced airway responses, and congestion
(e.g., nasal congestion) using the compounds of Formula I in
combination with a H.sub.1 receptor antagonist.
Inventors: |
Aslanian; Robert G.;
(Rockaway, NJ) ; Shih; Neng-Yang; (Warren, NJ)
; Ting; Pauline C.; (New Providence, NJ) ; Berlin;
Michael Y.; (Flemington, NJ) ; Rosenblum; Stuart
B.; (West Orange, NJ) ; McCormick; Kevin D.;
(Basking Ridge, NJ) ; Tom; Wing C.; (Cedar Grove,
NJ) ; Boyce; Christopher W.; (Flemington, NJ)
; Mangiaracina; Pietro; (Monsey, NJ) ; Mutahi;
Mwangi W.; (Fords, NJ) ; Piwinski; John J.;
(Lebanon, NJ) |
Correspondence
Address: |
SCHERING-PLOUGH CORPORATION;PATENT DEPARTMENT (K-6-1, 1990)
2000 GALLOPING HILL ROAD
KENILWORTH
NJ
07033-0530
US
|
Assignee: |
Schering Corporation
|
Family ID: |
22908389 |
Appl. No.: |
11/943315 |
Filed: |
November 20, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10699189 |
Oct 31, 2003 |
7300941 |
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11943315 |
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09978267 |
Oct 15, 2001 |
6720328 |
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10699189 |
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60240901 |
Oct 17, 2000 |
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Current U.S.
Class: |
514/255.04 ;
514/290; 514/316; 514/317 |
Current CPC
Class: |
A61P 9/04 20180101; A61P
9/00 20180101; C07D 413/14 20130101; A61P 11/02 20180101; A61P 5/00
20180101; A61P 1/00 20180101; A61P 9/10 20180101; C07D 401/14
20130101; C07D 417/14 20130101; C07D 213/73 20130101; A61K 31/435
20130101; A61P 1/04 20180101; A61P 37/08 20180101; A61K 31/445
20130101; C07D 401/12 20130101; C07D 498/04 20130101; A61P 25/06
20180101; C07D 409/14 20130101; A61P 11/04 20180101; A61P 25/20
20180101; A61P 3/00 20180101; A61P 27/14 20180101; A61P 11/00
20180101; A61P 25/00 20180101; A61K 31/495 20130101; A61P 3/04
20180101; A61P 25/28 20180101; A61P 25/18 20180101 |
Class at
Publication: |
514/255.04 ;
514/316; 514/290; 514/317 |
International
Class: |
A61K 31/495 20060101
A61K031/495; A61K 31/445 20060101 A61K031/445; A61K 31/435 20060101
A61K031/435; A61P 27/14 20060101 A61P027/14; A61P 11/02 20060101
A61P011/02 |
Claims
1. A compound of the formula: ##STR00520## or a pharmaceutically
acceptable salt or solvate thereof, wherein. (1) R.sup.1 is
selected from: (a) aryl; (b) heteroaryl; (c) heterocycloalkyl (d)
alkyl; (e) cycloalkyl; or (f) alkylaryl; wherein said R.sup.1
groups are optionally substituted with 1 to 4 substituents
independently selected from: (1) halogen; (2) hydroxyl; (3) lower
alkoxy; (4) --CF.sub.3; (5) CF.sub.3O--; (6) --NR.sup.4R.sup.5; (7)
phenyl; (8) --NO.sub.2, (9) --CO.sub.2R.sup.4; (10)
--CON(R.sup.4).sub.2 wherein each R.sup.4 is the same or different,
(11) --S(O).sub.mN(R.sup.20).sub.2 wherein each R.sup.20 is the
same or different H or alkyl group, preferably C.sub.1 to C.sub.4
alkyl, most preferably C.sub.1-C.sub.2 alkyl, and more preferably
methyl; (12) --CN; or (13) alkyl; or (2) R.sup.1 and X taken
together form a group selected from: ##STR00521## (3) X is selected
from: .dbd.C(O), .dbd.C(NOR.sup.3), .dbd.C(NNR.sup.4R.sup.5),
##STR00522## (4) M.sup.1 is carbon; (5) M.sup.2 is selected from C
or N; (6) M.sup.3 and M.sup.4 are independently selected from C or
N; (7) Y is selected from: is --CH.sub.2--, .dbd.C(O),
.dbd.C(NOR.sup.20) (wherein R.sup.20 is as defined above), or
.dbd.C(S); (8) Z is a C.sub.1-C.sub.6 alkyl group; (9) R.sup.2 is a
five or six-membered heteroaryl ring, said six-membered heteroaryl
ring comprising 1 or 2 nitrogen atoms with the remaining ring atoms
being carbon, and said five-membered heteroaryl ring containing 1
or 2 heteroatoms selected from: nitrogen, oxygen, or sulfur with
the remaining ring atoms being carbon, said five or six membered
heteroaryl rings being optionally substituted with 1 to 3
substituents independently selected from: halogen, hydroxyl, lower
alkyl, lower alkoxy, --CF.sub.3, CF.sub.3O--, --NR.sup.4R.sup.5,
phenyl, --NO.sub.2, --CO.sub.2R.sup.4, --CON(R.sup.4).sub.2 wherein
each R.sup.4 is the same or different, --CH.sub.2NR.sup.4R.sup.5,
--(N)C(NR.sup.4R.sup.5).sub.2, or --CN; (10) R.sup.3 is selected
from: (a) hydrogen; (b) C.sub.1-C.sub.6 alkyl; (c) aryl; (d)
heteroaryl; (e) heterocycloalkyl; (f) arylalkyl; (g)
--(CH.sub.2).sub.e--C(O)N(R.sup.4).sub.2 wherein each R.sup.4 is
the same or different, (h) --(CH.sub.2).sub.e--C(O)OR.sup.4; (i)
--(CH.sub.2).sub.e--C(O)R.sup.30 wherein R.sup.30 is a
heterocycloalkyl group, such as, for example, morpholinyl,
piperidinyl, piperazinyl or pyrrolidinyl, including ##STR00523##
(j) --CF.sub.3; or (k) --CH.sub.2CF.sub.3; wherein said aryl,
heteroaryl, heterocycloalkyl, and the aryl portion of said
arylalkyl are optionally substituted with 1 to 3 substituents
selected from: halogen, --OH, --OCF.sub.3, --CF.sub.3, --CN,
--N(R.sup.45).sub.2, --CO.sub.2R.sup.45, or
--C(O)N(R.sup.45).sub.2, wherein each R.sup.45 is independently
selected from: H, alkyl, alkylaryl, or alkylaryl wherein said aryl
moiety is substituted with 1 to 3 substituents independently
selected from --CF.sub.3,--OH, halogen, alkyl, --NO.sub.2, or --CN;
(11) R.sup.4 is selected from: hydrogen, C.sub.1-C.sub.6 alkyl,
aryl, alkylaryl, said aryl and alkylaryl groups being optionally
substituted with 1 to 3 substituents selected from: halogen,
--CF.sub.3, --OCF.sub.3, --OH, --N(R.sup.45).sub.2,
--CO.sub.2R.sup.45, --C(O)N(R.sup.45).sub.2, or --CN; wherein
R.sup.45 is as defined above; (12) R.sup.5 is selected from:
hydrogen, C.sub.1-C.sub.6 alkyl, --C(O)R.sup.4,
--C(O).sub.2R.sup.4, or --C(O)N(R.sup.4).sub.2 wherein each R.sup.4
is independently selected, and R.sup.4 is as defined above: (13) or
R.sup.4 and R.sup.5 taken together with the nitrogen atom to which
they are bound forms a five or six membered heterocycloalkyl ring;
(14) R.sup.6 is selected from: alkyl, aryl, alkylaryl, halogen,
hydroxyl, lower alkoxy, --CF.sub.3, CF.sub.3O--, --NR.sup.4R.sup.5,
phenyl, --NO.sub.2, --CO.sub.2R.sup.4, --CON(R.sup.4).sub.2 wherein
each R.sup.4 is the same or different, or --CN; (15) R.sup.12 is
selected from: alkyl, hydroxyl, alkoxy, or fluoro; (16) R.sup.13 is
selected from: alkyl, hydroxyl, alkoxy, or fluoro; (17) a is 0 to
2; (18) b is 0 to 2; (19) c is 0 to 2; (20) e is 0 to 5; (21) m is
1 or 2; (22) n is 1, 2 or 3; and (23) p is 1, 2 or 3, with the
proviso that when M.sup.3 and M.sup.4 are both nitrogen, then p is
2 or 3.
2. The compound of claim 1 wherein R.sup.1 is selected from: (A)
aryl; (B) substituted aryl, wherein the substituents on said
substituted aryl are selected from: (1) halo; or (2) alkyl; or (3)
substituted alkyl; (C) heteroaryl; (D) substituted heteroaryl; or
(E) when R.sup.1 is taken together with X, then the moiety is
##STR00524##
3. The compound of claim 2 wherein R.sup.1 is selected from: (A)
phenyl; (B) substituted phenyl wherein the substituents on said
substituted phenyl are selected from: (1) halo; (2) alkyl; (3)
alkyl substituted with halo; (C) heteroaryl selected from: pyridyl,
thienyl, pyrimidinyl, thiazolyl or pyridyl N-Oxide; (D) alkyl
substituted thiazolyl; or (E) when R.sup.1 is taken together with
X, then the moiety is ##STR00525## wherein c is 0 or 1, and when c
is 1 then R.sup.6 is halo.
4. The compound of claim 3 wherein R.sup.1 is selected from; (A)
phenyl; (B) substituted phenyl, wherein the substituents on said
substituted phenyl are independently selected from: chloro, fluoro
or trifluoromethyl; (C) heteroaryl selected from: ##STR00526## (D)
substituted hetetoaryl of the formula: ##STR00527## (E) when R is
taken together with X, then the moiety is ##STR00528## wherein c is
0 or 1, and when c is 1 then R.sup.6 is fluoro.
5. The compound of claim 1 wherein R.sup.1 is selected from: (A)
phenyl; (B) substituted phenyl, wherein the substituents on said
substituted phenyl are independently selected from: chloro, fluoro
or trifluoromethyl; (C) pyridyl; or (D) substituted heteroaryl of
the formula: ##STR00529## (E) when R.sup.1 is taken together with
X, then the moiety is ##STR00530## wherein c is 0 or 1, and when c
is 1 then R.sup.6 is fluoro.
6. The compound of claim 5 wherein R.sup.1 is pyridyl.
7. The compound of claim 6 wherein R.sup.1 is ##STR00531##
8. The compound of claim 1 wherein X is .dbd.C(NOR.sup.3), and
R.sup.3 is selected from H or alkyl.
9. The compound of claim 8 wherein R.sup.3 is selected from H,
methyl or ethyl.
10. The compound of claim 9 wherein R.sup.3 is methyl.
11. The compound of claim 1 wherein: (1) M.sup.2 is nitrogen; and
(2) M.sup.3 and M.sup.4 are selected such that: (a) one is carbon
and the other is nitrogen, or (b) both are nitrogen.
12. The compound of claim 11 wherein M.sup.3 is carbon, and M.sup.4
is nitrogen.
13. The compound of claim 1 wherein: n is 2; a is 0 or 1; b is 0 or
1; c is 0 or 1, and when c is 1 then R.sup.6 is halo; e is 1 to 5;
and p is 2.
14. The compound of claim 1 wherein Y is .dbd.C(O).
15. The compound of claim 1 wherein Z is C.sub.1 to C.sub.3
alkyl.
16. The compound of claim 1 wherein Z is ##STR00532##
17. The compound of claim 1 wherein R.sup.2 is a six membered
heteroaryl ring.
18. The compound of claim 17 wherein R.sup.2 is selected from
pyridyl, pyridyl substituted with --NR.sup.4R.sup.5, pyrimidinyl,
or pyrimidinyl substituted with --R.sup.4R.sup.5.
19. The compound of claim 18 wherein R.sup.2 is pyridyl substituted
with --NH.sub.2, or pyrimidinyl substituted with --NH.sub.2.
20. The compound of claim 19 wherein R.sup.2 is ##STR00533##
21. The compound of claim 1 wherein R.sup.4 is H or lower alkyl;
R.sup.5 is H, C.sub.1 to C.sub.6alkyl, or --C(O)R.sup.4; R.sup.12
is alkyl, hydroxy or fluoro; and R.sup.13 is alkyl, hydroxy or
fluoro.
22. The compound of claim 21 wherein R.sup.4 is H or methyl;
R.sup.5 is H or methyl; R.sup.12 is hydroxy or fluoro; and R.sup.13
is hydroxy or fluoro.
23. The compound of claim 1 wherein: (1) R.sup.1 is selected from:
(A) aryl; (B) substituted aryl, wherein the substituents on said
substituted aryl are selected from: (1) halo; or (2) alkyl; or (3)
substituted alkyl; (C) heteroaryl; or (D) substituted heteroaryl;
or (E) when R.sup.1 is taken together with X, then the moiety is
##STR00534## (2) X is .dbd.C(NOR.sup.3); (3) R.sup.3 is selected
from H or alkyl; (4) M.sup.2 is nitrogen; (5) Y is .dbd.C(O); (6)
M.sup.3 and M.sup.4 are selected such that: (1) one is carbon and
the other is nitrogen, or (2) both are nitrogen; (7) Z is C.sub.1
to C.sub.3 alkyl; and (8) R.sup.2 is a six membered heteroaryl
ring.
24. The compound of claim 23 wherein: (1) R.sup.1 is selected from:
(A) phenyl; (B) substituted phenyl wherein the substituents on said
substituted phenyl are selected from: (1) halo; (2) alkyl; (3)
alkyl substituted with halo; (C) heteroaryl selected from: pyridyl,
thienyl, pyrimidinyl, thiazolyl or pyridyl N-Oxide; or (D) alkyl
substituted thiazolyl; or (E) when R.sup.1 is taken together with
X, then the moiety is ##STR00535## wherein c is 0 or 1, and when c
is 1 then R.sup.6 is halo; (2) R.sup.3 is selected from H, methyl
or ethyl; (3) n is 2, (4) a is 0 or 1, (5) b is 0 or 1, (6) c is 0
or 1 and when c is 1 then R.sup.6 is halo, (7) e is 1 to 5, (8) p
is 2, (9) R.sup.4 is H or lower alkyl, (10) R.sup.5 is H, C.sub.1
to C.sub.6alkyl, or --C(O)R.sup.4; (11) R.sup.12 is alkyl, hydroxy
or fluoro, and (12) R.sup.13 is alkyl, hydroxy or fluoro.
25. The compound of claim 24 wherein R.sup.2 is ##STR00536##
R.sup.1 is ##STR00537## M.sup.2 is nitrogen, M.sup.3 is carbon, and
M.sup.4 is nitrogen.
26. The compound of claim 1 selected from: Compound 23, 30, 31, 32,
33, 41, 44, 45, 49, 50, 52, 53, 54, 55, 56, 57A, 59, 65, 75, 76,
80, 82, 83, 88, 92, 99, 104, 105, 110, 111, 117, 121, 123, 127,
128, 200-241, 244-273, 275, 278-282, 287, 296, 301-439, or 446.
27. The compound of claim 1 selected from: Compound 23, 30, 31, 32,
33, 50, 53, 54, 55, 56, 57A, 59, 92, 212, 215, 218, 219, 220, 224,
225, 226, 227, 229, 233, 235, 237, 238, 246, 246A, 247, 248, 251,
253, 253A, 268-273, 275, 278-281, 287, 296, 301, 304-307, 309, 312,
314-318, 320-356, or 358-376.
28. The compound of claim 1 selected from: Compound 30, 31, 32, 33,
54, 55, 56, 57A, 225, 237, 246A, 253A, 273, or 280, 287, 296, 301,
304-307, 309, 312, 314-318, 320-348, 350-356, 359-372, or
374-376.
29. The compound of claim 1 selected from: Compound 32, 54, 55,
253A, 287 or 320.
30. The compound of claim 1 having the formula: ##STR00538##
31. The compound of claim 1 having the formula: ##STR00539##
32. The compound of claim 1 having the formula ##STR00540##
33. The compound of claim 1 having the formula: ##STR00541##
34. The compound of claim 1 having the formula: ##STR00542##
35. The compound of claim 1 having the formula: ##STR00543##
36. The compound of claim 1 having the formula: ##STR00544##
37. The compound of claim 1 having the formula: ##STR00545##
38. A pharmaceutical composition comprising an effective amount of
a compound of claim 1 and a pharmaceutically effective carrier.
39. A method of treating: allergy, allergy-induced airway
responses, congestion, cardiovascular disease, diseases of the GI
tract, hyper and hypo motility and acidic secretion of the
gastrointestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of a compound of claim 1.
40. The method of claim 39 wherein allergy-induced airway responses
are treated.
41. The method of claim 39 wherein allergy or nasal congestion is
treated.
42. A pharmaceutical composition comprising an effective amount of
a compound of claim 1, and an effective amount of H.sub.1 receptor
antagonist, and a pharmaceutically effective carrier.
43. A method of treating: allergy, allergy-induced airway
responses, and congestion comprising administering to a patient in
need of such treatment an effective amount of a compound of claim 1
in combination with an effective amount of an H.sub.1 receptor
antagonist.
44. The method of claim 43 wherein said H.sub.1 receptor antagonist
is selected from: astemizole, azatadine, azelastine, acrivastine,
bromphentramine, cetirizine, chlorpheniramine, clemastine,
cyclizine, carebastine, cyproheptadine, carbinoxamine,
descarboethoxyloratadine, diphenhydramine, doxylamine,
dimethindene, ebastine, epinastine, efletirizine, fexofenadine,
hydroxyzine, ketotifen, loratadine, levocabastine, meclizine,
mizolastine, mequitazine, mianserin, noberastine, norastemizole,
picumast, pyrilamine, promethazine, terfenadine, tripelennamine,
temelastine, trimeprazine or triprolidine.
45. The method of claim 44 wherein said H.sub.1 receptor antagonist
is selected from: loratadine, descarboethoxyloratadine,
fexofenadine or cetirizine.
46. The method of claim 45 wherein said H.sub.1 receptor antagonist
is selected from: loratadine or descarboethoxyloratadine.
47. A pharmaceutical composition comprising an effective amount of
a compound of claim 1 and a pharmaceutically effective carrier,
wherein said compound of claim 1 is selected from: ##STR00546##
48. A method of treating: allergy, allergy-induced airway
responses, congestion, cardiovascular diseases diseases of the GI
tract, hyper and hypo motility and acidic secretion of the
gastro-intestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of a compound of claim 1, wherein said compound of claim 1
is selected from: ##STR00547##
49. The method of claim 48 wherein allergy-induced airway responses
are treated.
50. The method of claim 48 wherein allergy or nasal congestion is
treated.
51. A pharmaceutical composition comprising an effective amount of
a compound of claim 1, and an effective amount of H.sub.1 receptor
antagonist, and a pharmaceutically effective carrier, wherein said
compound of claim 1 is selected from: ##STR00548##
52. A method of treating: allergy, allergy-induced airway
responses, and congestion comprising administering to a patient in
need of such treatment an effective amount of a compound of claim 1
in combination with an effective amount of an H.sub.1 receptor
antagonist, wherein said compound of claim 1 is selected from:
##STR00549##
53. The method of claim 52 wherein said H.sub.1 receptor antagonist
is selected from: astemizole, azatadine, azelastine, acnvastine,
brompheniramine, cetirizine, chlorpheniramine, clemastine,
cyclizine, carebastine, cyproheptadine, carbinoxamine,
descarboethoxyloratadine, diphenhydramine, doxylamine,
dimethindene, ebastine, epinastine, efletirizine, fexofenadine,
hydroxyzine, ketotifen, loratadine, levocabastine, meclizine,
mizolastine, mequitazine, mianserin, noberastine, norastemizole,
picumast, pyrilamine, promethazine, terfenadine, tripelennamine,
temelastine, trimeprazine or triprolidine.
54. The method of claim 53 wherein said H.sub.1 receptor antagonist
is selected from: loratadine, descarboethoxyloratadine,
fexofenadine or cetirizine.
55. The method of claim 54 wherein said H.sub.1 receptor antagonist
is selected from: loratadine or descarboethoxyloratadine.
Description
REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional
Application Ser. No. 60/240,901 filed Oct. 17, 2000.
BACKGROUND OF THE INVENTION
[0002] WO 95/14007 published May 26, 1995 discloses H.sub.3
receptor antagonists of the imidazole type.
[0003] WO99/24405 published May 20, 1999 discloses H.sub.3 receptor
ligands of the imidazole type.
[0004] U.S. Pat. No. 5,869,479 issued Feb. 9, 1999 discloses
compositions for the treatment of the symptoms of allergic rhinitis
using a combination of at least one histamine H.sub.1 receptor
antagonist and at least one histamine H.sub.3 receptor
antagonist.
[0005] In view of the art's interest in compounds which affect
H.sub.3 receptors, novel compounds that are antagonists of H.sub.3
receptors would be a welcome contribution to the art. This
invention provides just such a contribution.
SUMMARY OF THE INVENTION
[0006] The present invention provides novel compounds of structure
I.
##STR00002##
or a pharmaceutically acceptable salt or solvate thereof,
wherein
[0007] (1) R.sup.1 is selected from: [0008] (a) aryl; [0009] (b)
heteroaryl; [0010] (c) heterocycloalkyl [0011] (d) alkyl, [0012]
(e) cycloalkyl; or [0013] (f) alkylaryl; wherein said R.sup.1
groups are optionally substituted with 1 to 4 substituents
independently selected from: [0014] (1) halogen (e.g., Br, F, or
Cl, preferably F or Cl); [0015] (2) hydroxyl (i.e., --OH); [0016]
(3) lower alkoxy (e.g., C.sub.1 to C.sub.6 alkoxy, preferably
C.sub.1 to C.sub.4 alkoxy, most preferably C.sub.1 to C.sub.2
alkoxy, more preferably methoxy); [0017] (4) --CF.sub.3; [0018] (5)
CF.sub.3O--; [0019] (6) --NR.sup.4R.sup.5; [0020] (7) phenyl;
[0021] (8) --NO.sub.2, [0022] (9) --CO.sub.2R.sup.4; [0023] (10)
--CON(R.sup.4).sub.2 wherein each R.sup.4 is the same or different;
[0024] (11) --S(O).sub.mN(R.sup.20).sub.2 wherein each R.sup.20 is
the same or different H or alkyl group, preferably C.sub.1 to
C.sub.4 alkyl, most preferably C.sub.1-C.sub.2 alkyl, and more
preferably methyl; [0025] (12) --CN; or [0026] (13) alkyl; or
[0027] (2) R.sup.1 and X taken together form a group selected
from:
##STR00003##
[0028] (3) X is selected from: .dbd.C(O), .dbd.C(NOR.sup.3),
--C(NNR.sup.4R.sup.5),
##STR00004##
[0029] (4) M.sup.1 is carbon;
[0030] (5) M.sup.2 is selected from C or N;
[0031] (6) M.sup.3 and M.sup.4 are independently selected from C or
N;
[0032] (7) Y is selected from: is --CH.sub.2--, .dbd.C(O),
.dbd.C(NOR.sup.20) (wherein R.sup.20 is as defined above), or
.dbd.C(S);
[0033] (8) Z is a C.sub.1-C.sub.6 alkyl group;
[0034] (9) R.sup.2 is a five or six-membered heteroaryl ring, said
six-membered heteroaryl ring comprising 1 or 2 nitrogen atoms with
the remaining ring atoms being carbon, and said five-membered
heteroaryl ring containing 1 or 2 heteroatoms selected from:
nitrogen, oxygen, or sulfur with the remaining ring atoms being
carbon; said five or six membered heteroaryl rings being optionally
substituted with 1 to 3 substituents independently selected from:
halogen, hydroxyl, lower alkyl, lower alkoxy, --CF.sub.3,
CF.sub.3O--, --NR.sup.4R.sup.5, phenyl, --NO.sub.2,
--CO.sub.2R.sup.4, --CON(R.sup.4).sub.2 wherein each R.sup.4 is the
same or different, --CH.sub.2NR.sup.4R.sup.5,
--(N)C(NR.sup.4R.sup.5).sub.2, or --CN;
[0035] (10) R.sup.3 is selected from: [0036] (a) hydrogen; [0037]
(b) C.sub.1-C.sub.6 alkyl; [0038] (c) aryl; [0039] (d) heteroaryl;
[0040] (e) heterocycloalkyl; [0041] (f) arylalkyl (e.g.,
aryl(C.sub.1 to C.sub.4)alkyl, e.g., --(CH.sub.2).sub.waryl wherein
w is 1 to 4, preferably 1 or 2, and most preferably 1, such as, for
example --CH.sub.2phenyl or --CH.sub.2substituted phenyl); [0042]
(g) --(CH.sub.2).sub.e--C(O)N(R.sup.4).sub.2 wherein each R.sup.4
is the same or different, [0043] (h)
--(CH.sub.2).sub.e--C(O)OR.sup.4; [0044] (i)
--(CH.sub.2).sub.e--C(O)R.sup.30 wherein R.sup.30 is a
heterocycloalkyl group, such as, for example, morpholinyl,
piperidinyl, piperazinyl or pyrrolidinyl, including
[0044] ##STR00005## [0045] (j) --CF.sub.3; or [0046] (k)
--CH.sub.2CF.sub.3; wherein said aryl, heteroaryl,
heterocycloalkyl, and the aryl portion of said arylalkyl are
optionally substituted with 1 to 3 (preferably 1) substituents
selected from: halogen (e.g., F or Cl), --OH, --OCF.sub.3,
--CF.sub.3, --CN, --N(R.sup.45).sub.2, --CO.sub.2R.sup.45, or
--C(O)N(R.sup.45).sub.2, wherein each R.sup.45 is independently
selected from: H, alkyl, alkylaryl, or alkylaryl wherein said aryl
moiety is substituted with 1 to 3 substituents independently
selected from --CF.sub.3, --OH, halogen, alkyl, --NO.sub.2, or
--CN;
[0047] (11) R.sup.4 is selected from: hydrogen, C.sub.1-C.sub.6
alkyl, aryl, alkylaryl, said aryl and alkylaryl groups being
optionally substituted with 1 to 3 substituents selected from:
halogen, --CF.sub.3, --OCF.sub.3, --OH, --N(R.sup.45).sub.2,
--CO.sub.2R.sup.45, --C(O)N(R.sup.45).sub.2, or --CN; wherein
R.sup.45 is as defined above;
[0048] (12) R.sup.5 is selected from: hydrogen, C.sub.1-C.sub.6
alkyl, --C(O)R.sup.4, --C(O).sub.2R.sup.4, or
--C(O)N(R.sup.4).sub.2 wherein each R.sup.4 is independently
selected, and R.sup.4 is as defined above;
[0049] (13) or R.sup.4 and R.sup.5 taken together with the nitrogen
atom to which they are bound forms a five or six membered
heterocycloalkyl ring (e.g., morpholine);
[0050] (14) R.sup.6 is selected from: alkyl, aryl, alkylaryl,
halogen, hydroxyl, lower alkoxy, --CF.sub.3, CF.sub.3O--,
--NR.sup.4R.sup.5, phenyl, --NO.sub.2, --CO.sub.2R.sup.4,
--CON(R.sup.4).sub.2 wherein each R.sup.4 is the same or different,
or --CN;
[0051] (15) R.sup.12 is selected from: alkyl, hydroxyl, alkoxy, or
fluoro;
[0052] (16) R.sup.13 is selected from: alkyl, hydroxyl, alkoxy, or
fluoro;
[0053] (17) a (subscript for R.sup.12) is 0 to 2;
[0054] (18) b (subscript for R.sup.13) is 0 to 2;
[0055] (19) c (subscript for R.sup.6) is 0 to 2;
[0056] (20) e is 0 to 5;
[0057] (21) m is 0 or 2;
[0058] (22) n is 1, 2 or 3; and
[0059] (23) p is 1, 2 or 3, with the proviso that when M.sup.3 and
M.sup.4 are both nitrogen, then p is 2 or 3 (i.e., p is not 1 when
M.sup.3 and M.sup.2 are both nitrogen).
[0060] This invention also provides a pharmaceutical composition
comprising an effective amount of compound of Formula I, and a
pharmaceutically acceptable carrier.
[0061] This invention further provides a method of treating:
allergy, allergy-induced airway (e.g., upper airway) responses,
congestion (e.g., nasal congestion), hypotension, cardiovascular
disease, diseases of the GI tract, hyper and hypo motility and
acidic secretion of the gastrointestinal tract, obesity, sleeping
disorders (e.g., hypersomnia, somnolence, and narcolepsy),
disturbances of the central nervous system, attention deficit
hyperactivity disorder ADHD), hypo and hyperactivity of the central
nervous system (for example, agitation and depression), and other
CNS disorders (such as Alzheimer's, schizophrenia, and migraine)
comprising administering to a patient in need of such treatment
(e.g., a mammal, such as a human being) an effective amount of a
compound of Formula I.
[0062] This invention further provides a method of treating:
allergy comprising administering to a patient in need of such
treatment (e.g., a mammal, such as a human being) an effective
amount of a compound of Formula I.
[0063] This invention further provides a method of treating:
allergy-induced airway (e.g., upper airway) responses comprising
administering to a patient in need of such treatment (e.g., a
mammal, such as a human being) an effective amount of a compound of
Formula I.
[0064] This invention further provides a method of treating:
congestion (e.g., nasal congestion) comprising administering to a
patient in need of such treatment (e.g., a mammal, such as a human
being) an effective amount of a compound of Formula I.
[0065] This invention further provides a pharmaceutical composition
comprising an effective amount of a compound of Formula I, and an
effective amount of a H.sub.1 receptor antagonist in combination
with a pharmaceutically acceptable carrier.
[0066] This invention further provides a method of treating:
allergy, allergy-induced airway (e.g., upper airway) responses, and
congestion (e.g., nasal congestion) comprising administering to a
patient in need of such treatment (e.g., a mammal, such as a human
being) an effective amount of a compound of Formula I in
combination with an effective amount of an H.sub.1 receptor
antagonist.
[0067] This invention further provides a method of treating:
allergy comprising administering to a patient in need of such
treatment (e.g., a mammal, such as a human being) an effective
amount of a compound of Formula I in combination with an effective
amount of an H.sub.1 receptor antagonist.
[0068] This invention further provides a method of treating:
allergy-induced airway (e.g., upper airway) responses comprising
administering to a patient in need of such treatment (e.g., a
mammal, such as a human being) an effective amount of a compound of
Formula I in combination with an effective amount of an H.sub.1
receptor antagonist.
[0069] This invention further provides a method of treating:
congestion (e.g., nasal congestion) comprising administering to a
patient in need of such treatment (e.g., a mammal, such as a human
being) an effective amount of a compound of Formula I in
combination with an effective amount of an H.sub.1 receptor
antagonist.
DETAILED DESCRIPTION OF THE INVENTION
[0070] As used herein, the following terms have the following
meanings, unless indicated otherwise:
[0071] alkyl--(including the alkyl portions of alkoxy and
alkylaryl)--represents straight and branched carbon chains and
contains from one to twenty carbon atoms, preferably one to six
carbon atoms;
[0072] alkylaryl--represents an alkyl group, as defined above,
bound to an aryl group, as defined below, wherein said aryl group
is bound to the rest of the molecule;
[0073] aryl (including the aryl portion of alkylaryl)--represents a
carbocyclic group containing from 6 to 15 carbon atoms and having
at least one aromatic ring (e.g., aryl is a phenyl ring), with all
available substitutable carbon atoms of the carbocyclic group being
intended as possible points of attachment;
[0074] arylalkyl--represents an aryl group, as defined above, bound
to an alkyl group, as defined above, wherein said alkyl group is
bound to the rest of the molecule;
[0075] cycloalkyl--represents saturated carbocyclic rings of from 3
to 20 carbon atoms, preferably 3 to 7 carbon atoms;
[0076] halo (halogen)--represents fluoro, chloro, bromo and
iodo;
[0077] heteroaryl--represents cyclic groups, having at least one
heteroatom selected from O, S or N, said heteroatom interrupting a
carbocyclic ring structure and having a sufficient number of
delocalized pi electrons to provide aromatic character, with the
aromatic heterocyclic groups preferably containing from 2 to 14
carbon atoms; examples include but are not limited to isothiazolyl,
isoxazolyl, furazanyl, triazolyl, thiazolyl, thienyl, furanyl
(furyl), pyrrolyl, pyrazolyl, pyranyl, pyrimidinyl, pyrazinyl,
pyridazinyl, pyridyl (e.g., 2-, 3-, or 4-pyridyl), pyridyl N-oxide
(e.g., 2-, 3-, or 4-pyridyl N-oxide), triaziny, pteridinyl, indolyl
(benzopyrrolyl), pyridopyrazinyl, isoqinolinyl, quinolinyl,
quinoxotinyl, naphthyridinyl, wherein said pyridyl N-oxide can be
represented as:
##STR00006##
[0078] heterocycloalkyl--represents a saturated, carbocylic ring
containing from 3 to 15 carbon atoms, preferably from 4 to 6 carbon
atoms, which carbocyclic ring is interrupted by 1 to 3 hetero
groups selected from --O--, --S-- or --NR.sup.40-- wherein R.sup.40
represents C.sub.1 to C.sub.6 alkyl, arylalkyl, --C(O)R.sup.4,
--C(O)OR.sup.4, or --C(O)N(R.sup.45).sub.2 (wherein R.sup.45 is as
defined above, and each R.sup.45 is independently selected);
examples include but are not limited to 2- or 3-tetrahydrofuranyl,
2- or 3-tetrahydrothienyl, 2-, 3- or 4-piperidinyl, 2- or
3-pyrrolidinyl, 2- or 3-piperizinyl, 2- or 4-dioxanyl,
1,3-dioxolanyl, 1,3,5-trithianyl, pentamethylene sulfide,
perhydroisoquinolinyl, decahydroquinolinyl, trimethylene oxide,
azetidinyl, 1-azacycloheptanyl, 1,3-dithianyl, 1,3,5-trioxanyl,
morpholinyl, thiomorpholinyl, 1,4-thioxanyl, and
1,3,5-hexahydrotriazinyl, thiazolidinyl, tetrahydropyranyl;
[0079] lower alkyl--represents an alkyl group, as defined above,
that comprises 1 to 6 carbon atoms, preferably 1-4 carbon
atoms;
[0080] lower alkoxy--represents an alkoxy group whose alkyl moiety
comprises 1 to 6 carbon atoms, preferably 1-4 carbon atoms;
[0081] .dbd.C(O)--represents
##STR00007##
[0082] .dbd.C(NOR.sup.3)--represents
##STR00008##
wherein (1) represents a mixture of oxime isomers; (2) represents
one geometric isomer of the oxime wherein the --OR.sup.3 group is
on the same side of the double bond as the group to the left of the
carbon atom; (3) represents one geometric isomer of the oxime
wherein the --OR.sup.3 group is on the same side of the double bond
as the group to the right of the carbon atom; and (1) can also be
represented as:
##STR00009##
[0083] .dbd.C(NNR.sup.4R.sup.5) represents
##STR00010##
and represents a mixture of the isomers
##STR00011##
[0084] --(N)C(NR.sup.4R.sup.5).sub.2 represents
##STR00012##
##STR00013##
in the structure
##STR00014##
represents a nitrogen atom that is located at one of the 4
non-fused positions of the ring, i.e. positions 1, 2, 3 or 4
indicated below.
##STR00015## [0085] AcOH--represents acetic acid; [0086]
t-BOC--represents t-butyloxycarbonyl; [0087] Ci/mmol--represents
curie/mmol (a measure of specific activity); [0088]
m-CPBA--represents m-chloroperbenzoic acid; [0089] CSA--represents
camphorsulfonic acid; [0090] CBZ--represents carbonylbenzyloxy
(--C(O)OCH.sub.2C.sub.6H.sub.5); [0091] DBU--represents
1,8-diazabicyclo[5.4.0]undec-7-ene; [0092] DBN--represents
1,5-diazabicyclo[4.3.0]non-5-ene; [0093] DCC--represents
dicyclohexylcarbodiimide; [0094] Dibal-H--represents
diisobutylaluminum hydride; [0095] DIPEA--represents
N,N-diisopropylethylamine; [0096] DMAP--represents
4-(dimethylamino)pyridine; [0097] DEC--represents
2-diethylaminoethyl chloride hydrochloride; [0098] DMF--represents
dimethylformamide; [0099] EDCl--represents
1-(3-dimethylaminopropyl)-3-ethylcarbodiimide; [0100]
EtOAc--represents ethyl acetate; [0101] EtOH--represents ethanol;
[0102] FMOC--represents 9-fluorenylmethoxycarbonyl; [0103]
HOBT--represents 1-hydroxybenzotriazole; [0104] HPLC--represents
high performance liquid chromatography; [0105] HRMS--represents
high resolution mass spectrometry; [0106] Ki--represents inhibition
constant for substrate/receptor complex; [0107] LAH--lithium
aluminum hydride; [0108] LDA--represents lithium diisopropylamide;
[0109] LRMS--represents low resolution mass spectrometry; [0110]
MeOH--represents methanol; [0111] NaBH(OAc).sub.3--represents
sodium triacetoxyborohydride; [0112] NaBH.sub.4--represents sodium
borohydride; [0113] NaBH.sub.3CN--represents sodium
cyanoborohydride; [0114] NaHMDS--represents sodium hexamethyl
disilylazide; [0115] nM--represents nanomolar; [0116]
pA.sub.2--represents --logEC.sub.50, as defined by J. Hey, Eur. J.
Pharmacol., (1995), Vol. 294, 329-335; [0117] PCC--represents
pyridinium chlorochromate; [0118] PyBOP--represents
benzotriazole-1-yl-oxy-trispyrrolidino-phosphonium
hexafluorophosphate; [0119] TEMPO--represents
2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; [0120]
TFA--represents trifluoroacetic acid; [0121] TMAD--represents
N,N,N',N'-tetramethylazodicarboxamide; [0122] TMEDA--represents
tetramethylethylenediamine; [0123] Tr--represents triphenylmethyl,
[0124] Tris--represents tris(hydroxymethyl)aminomethanetane; and
[0125] p-TsOH--represents p-toluenesulfonic acid.
[0126] Also, as used herein, "upper airway" usually means the upper
respiratory system--i.e., the nose, throat, and associated
structures.
[0127] Also, as used herein, "effective amount" generally means a
therapeutically effective amount.
[0128] Lines drawn into the rings indicate that the indicated bond
may be attached to any of the substitutable ring carbon atoms.
[0129] Certain compounds of the invention may exist in different
isomeric (e.g., enantiomers, diastereoisomers and geometric) forms.
The invention contemplates all such isomers both in pure form and
in admixture, including racemic mixtures. Enol forms are also
included.
[0130] The compounds of this invention are ligands for the
histamine H.sub.3 receptor. The compounds of this invention can
also be described as antagonists of the H.sub.3 receptor, or as
H.sub.3 antagonists.
[0131] The compounds of the invention are basic and form
pharmaceutically acceptable salts with organic and inorganic acids.
Examples of suitable acids for such salt formation are
hydrochloric, sulfuric, phosphoric, acetic, citric, oxalic,
malonic, salicylic, malic, fumaric, succinic, ascorbic, maleic,
methanesulfonic and other mineral and carboxylic acids well known
to those skilled in the art. The salts are prepared by contacting
the free base form with a sufficient amount of the desired acid to
produce a salt in the conventional manner. The free base forms may
be regenerated by treating the salt with a suitable dilute aqueous
base solution such as dilute aqueous sodium hydroxide, potassium
carbonate, ammonia and sodium bicarbonate. The free base forms
differ from their corresponding salt forms somewhat in certain
physical properties, such as solubility in polar solvents, but the
salts are otherwise equivalent to their corresponding free base
forms for purposes of this invention.
[0132] The compounds of Formula I can exist in unsolvated as well
as solvated forms, including hydrated forms, e.g., hemi-hydrate. In
general, the solvated forms, with pharmaceutically acceptable
solvents such as water, ethanol and the like are equivalent to the
unsolvated forms for purposes of the invention.
[0133] The compounds of this invention can be combined with an
H.sub.1 receptor antagonist (i.e., the compounds of this invention
can be combined with an H.sub.1 receptor antagonist in a
pharmaceutical composition, or the compounds of this invention can
be administered with H.sub.1 receptor antagonist).
[0134] Numerous chemical substances are known to have histamine
H.sub.1 receptor antagonist activity. Many useful compounds can be
classified as ethanotamines, ethylenedia mines, alkylamines,
phenothiazines or piperidines. Representative H.sub.1 receptor
antagonists include, without limitation: astemizole, azatadine,
azelastine, acrivastine, brompheniramine, cetirizine,
chlorpheniramine, clemastine, cyclizine, carebastine,
cyproheptadine, carbinoxamine, descarboethoxyloratadine (also known
as SCH-34117), diphenhydramine, doxylamine, dimethindene, ebastine,
epinastine, efletirizine, fexofenadine, hydroxyzine, ketotifen,
loratadine, levocabastine, meclizine, mizolastine, mequitazine,
mianserin, noberastine, norastemizole, picumast, pyrilamine,
promethazine, terfenadine, tripelennamine, temelastine,
trimeprazine and triprolidine. Other compounds can readily be
evaluated to determine activity at H.sub.1 receptors by known
methods, including specific blockade of the contractile response to
histamine of isolated guinea pig ileum. See for example, WO98/06394
published Feb. 19, 1998.
[0135] Thus, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is selected
from: astemizole, azatadine, azelastine, acrivastine,
brompheniramine, cetirizine, chlorpheniramine, clemastine,
cyclizine, carebastine, cyproheptadine, carbinoxamine,
descarboethoxyloratadine, diphenhydramine, doxylamine,
dimethindene, ebastine, epinastine, efletirizine, fexofenadine,
hydroxyzine, ketotifen, loratadine, levocabastine, meclizine,
mizolastine, mequitazine, mianserin, noberastine, norastemizole,
picumast, pyrilamine, promethazine, terfenadine, tripelennamine,
temelastine, trimeprazine or triprolidine.
[0136] Also, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is selected
from: astemizole, azatadine, azelastine, brompheniramine,
cetirizine, chlorpheniramine, clemastine, carebastine,
descarboethoxyloratadine, diphenhydramine, doxylamine, ebastine,
fexofenadine, loratadine, levocabastine, mizolastine,
norastemizole, or terfenadine.
[0137] Also, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is selected
from: azatadine, brompheniramine, cetirizne, chlorpheniramine,
carebastine, descarboethoxyloratadine (also known as SCH-34117),
diphenhydramine, ebastine, fexofenadine, loratadine, or
norastemizole.
[0138] Also, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is
loratadine.
[0139] Also, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is
descarboethoxyloratadine.
[0140] Also, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is
fexofenadine.
[0141] Also, in the methods of this invention wherein a compound of
Formula I is combined with an effective amount of an H.sub.1
receptor antagonist, said H.sub.1 receptor antagonist is
cetirizine.
[0142] Preferably, in the above methods, allergy-induced airway
responses are treated.
[0143] Also, preferably, in the above methods, allergy is
treated.
[0144] Also, preferably, in the above methods, nasal congestion is
treated.
[0145] Preferably, in the above methods using a combination of a
compound of Formula I (H.sub.3 antagonist) and an H.sub.1
antagonist, the H.sub.1 antagonist is selected from: loratadine,
descarboethoxyloratadine, fexofenadine or cetirizine. Most
preferably the H.sub.1 antagonist is loratadine or
descarboethoxyloratadine.
[0146] In the methods of this invention wherein a combination of an
H.sub.3 antagonist of this invention (compound of Formula I) is
administered with a H.sub.1 antagonist, the antagonists can be
administered simultaneously, consecutively (one after the other
within a relatively short period of time), or sequentially (first
one and then the other over a period of time). In general, when the
antagonists are administered consecutively or sequentially, the
H.sub.3 antagonist of this invention (compound of Formula I) is
administered first.
[0147] Thus, one embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 32 and a pharmaceutically acceptable carrier.
[0148] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 54 and a pharmaceutically acceptable carrier.
[0149] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 55 and a pharmaceutically acceptable carrier.
[0150] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 253A and a pharmaceutically acceptable carrier.
[0151] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 287 and a pharmaceutically acceptable carrier.
[0152] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 320 and a pharmaceutically acceptable carrier.
[0153] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, congestion,
hypotension, cardiovascular disease, hypotension, diseases of the
GI tract, hyper and hypo motility and acidic secretion of the
gastrointestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of Compound 32.
[0154] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, congestion,
hypotension, cardiovascular disease, hypotension, diseases of the
GI tract, hyper and hypo motility and acidic secretion of the
gastro-intestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of Compound 54.
[0155] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, congestion,
hypotension, cardiovascular disease, hypotension, diseases of the
GI tract, hyper and hypo motility and acidic secretion of the
gastrointestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of Compound 55.
[0156] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, congestion,
hypotension, cardiovascular disease, hypotension, diseases of the
GI tract, hyper and hypo motility and acidic secretion of the
gastrointestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of Compound 253A.
[0157] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, congestion,
hypotension, cardiovascular disease, hypotension, diseases of the
GI tract, hyper and hypo motility and acidic secretion of the
gastro-intestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of Compound 287.
[0158] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, congestion,
hypotension, cardiovascular disease, hypotension, diseases of the
GI tract, hyper and hypo motility and acidic secretion of the
gastrointestinal tract, obesity, sleeping disorders, disturbances
of the central nervous system, attention deficit hyperactivity
disorder, hypo and hyperactivity of the central nervous system,
Alzheimer's disease, schizophrenia, and migraine comprising
administering to a patient in need of such treatment an effective
amount of Compound 320.
[0159] Another embodiment of this invention is directed to a method
of treating allergy-induced airway responses comprising
administering to a patient in need of such treatment an effective
amount of Compound 32.
[0160] Another embodiment of this invention is directed to a method
of treating allergy-induced airway responses comprising
administering to a patient in need of such treatment an effective
amount of Compound 54.
[0161] Another embodiment of this invention is directed to a method
of treating allergy-induced airway responses comprising
administering to a patient in need of such treatment an effective
amount of Compound 55.
[0162] Another embodiment of this invention is directed to a method
of treating allergy-induced airway responses comprising
administering to a patient in need of such treatment an effective
amount of Compound 253A.
[0163] Another embodiment of this invention is directed to a method
of treating allergy-induced airway responses comprising
administering to a patient in need of such treatment an effective
amount of Compound 287.
[0164] Another embodiment of this invention is directed to a method
of treating allergy-induced airway responses comprising
administering to a patient in need of such treatment an effective
amount of Compound 320.
[0165] Another embodiment of this invention is directed to a method
of treating allergy or nasal congestion comprising administering to
a patient in need of such treatment an effective amount of Compound
32.
[0166] Another embodiment of this invention is directed to a method
of treating allergy or nasal congestion comprising administering to
a patient in need of such treatment an effective amount of Compound
54.
[0167] Another embodiment of this invention is directed to a method
of treating allergy or nasal congestion comprising administering to
a patient in need of such treatment an effective amount of Compound
55.
[0168] Another embodiment of this invention is directed to a method
of treating allergy or nasal congestion comprising administering to
a patient in need of such treatment an effective amount of Compound
253A.
[0169] Another embodiment of this invention is directed to a method
of treating allergy or nasal congestion comprising administering to
a patient in need of such treatment an effective amount of Compound
287.
[0170] Another embodiment of this invention is directed to a method
of treating allergy or nasal congestion comprising administering to
a patient in need of such treatment an effective amount of Compound
320.
[0171] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 32, and an effective amount of H.sub.1 receptor
antagonist, and a pharmaceutically effective carrier.
[0172] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 54, and an effective amount of H.sub.1 receptor
antagonist, and a pharmaceutically effective carrier. Another
embodiment of this invention is directed to a pharmaceutical
composition comprising an effective amount of Compound 55, and an
effective amount of H.sub.1 receptor antagonist, and a
pharmaceutically effective carrier.
[0173] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 253A, and an effective amount of H.sub.1 receptor
antagonist, and a pharmaceutically effective carrier.
[0174] Another embodiment of this invention is directed to a
pharmaceutical composition comprising an effective amount of
Compound 287, and an effective amount of H.sub.1 receptor
antagonist, and a pharmaceutically effective carrier. Another
embodiment of this invention is directed to a pharmaceutical
composition comprising an effective amount of Compound 320, and an
effective amount of H.sub.1 receptor antagonist, and a
pharmaceutically effective carrier.
[0175] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 32 in combination with an
effective amount of an H.sub.1 receptor antagonist.
[0176] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 54 in combination with an
effective amount of an H.sub.1 receptor antagonist.
[0177] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of a Compound 55 in combination with
an effective amount of an H.sub.1 receptor antagonist.
[0178] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 253A in combination with
an effective amount of an H.sub.1 receptor antagonist.
[0179] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 287 in combination with
an effective amount of an H.sub.1 receptor antagonist.
[0180] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 320 in combination with
an effective amount of an H.sub.1 receptor antagonist.
[0181] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 32 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
astemizole, azatadine, azelastine, acrivastine, brompheniramine,
cetirizine, chlorpheniramine, clemastine, cyclizine, carebastine,
cyproheptadine, carbinoxamine, descarboethoxyloratadine,
diphenhydramine, doxylamine, dimethindene, ebastine, epinastine,
efletirizine, fexofenadine, hydroxyzine, ketotifen, loratadine,
levocabastine, meclizine, mizolastine, mequitazine, mianserin,
noberastine, norastemizole, picumast, pyrilamine, promethazine,
terfenadine, tripelennamine, temelastine, trimeprazine or
triprolidine.
[0182] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 54 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
astemizole, azatadine, azelastine, acrivastine, brompheniramine,
cetirizine, chlorpheniramine, clemastine, cyclizine, carebastine,
cyproheptadine, carbinoxamine, descarboethoxyloratadine,
diphenhydramine, doxylamine, dimethindene, ebastine, epinastine,
efletirizine, fexofenadine, hydroxyzine, ketotifen, loratadine,
levocabastine, meclizine, mizolastine, mequitazine, mianserin,
noberastine, norastemizole, picumast, pyrilamine, promethazine,
terfenadine, tripelennamine, temelastine, trimeprazine or
triprolidine.
[0183] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 55 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
astemizole, azatadine, azelastine, acrivastine, brompheniramine,
cetirizine, chlorpheniramine, clemastine, cyclizine, carebastine,
cyproheptadine, carbinoxamine, descarboethoxyloratadine,
diphenhydramine, doxylamine, dimethindene, ebastine, epinastine,
efletirizine, fexofenadine, hydroxyzine, ketotifen, loratadine,
levocabastine, meclizine, mizolastine, mequitazine, mianserin,
noberastine, norastemizole, picumast, pyrilamine, promethazine,
terfenadine, tripelennamine, temelastine, trimeprazine or
triprolidine.
[0184] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 253A in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: astemizole, azatadine, azelastine, acrivastine,
brompheniramine, cetirizine, chlorpheniramine, clemastine,
cyclizine, carebastine, cyproheptadine, carbinoxamine,
descarboethoxyloratadine, diphenhydramine, doxylamine,
dimethindene, ebastine, epinastine, efletirizine, fexofenadine,
hydroxyzine, ketotifen, loratadine, levocabastine, meclizine,
mizolastine, mequitazine, mianserin, noberastine, norastemizole,
picumast, pyrilamine, promethazine, terfenadine, tripelennamine,
temelastine, trimeprazine or triprolidine.
[0185] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 287 in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: astemizole, azatadine, azelastine, acrvastine,
brompheniramine, cetirizine, chlorpheniramine, clemastine,
cyclizine, carebastine, cyproheptadine, carbinoxamine,
descarboethoxyloratadine, diphenhydramine, doxylamine,
dimethindene, ebastine, epinastine, efletirizine, fexofenadine,
hydroxyzine, ketotifen loratadine, levocabastine, meclizine,
mizolastine, mequitazine, mianserin, noberastine, norastemizole,
picumast, pyrilamine, promethazine, terfenadine, tripelennamine,
temelastine, trimeprazine or triprolidine.
[0186] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 320 in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: astemizole, azatadine, azelastine, acrivastine,
brompheniramine, cetirizine, chlorpheniramine, clemastine,
cyclizine, carebastine, cyproheptadine, carbinoxamine,
descarboethoxyloratadine, diphenhydramine, doxylamine,
dimethindene, ebastine, epinastine, efletirizine, fexofenadine,
hydroxyzine, ketotifen, loratadine, levocabastine, meclizine,
mizolastine, mequitazine, mianserin, noberastine, norastemizole,
picumast, pyrilamine, promethazine, terfenadine, tripelennamine,
temelastine, trimeprazine or triprolidine.
[0187] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 32 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
loratadine, descarboethoxyloratadine, fexofenadine or
cetirizine.
[0188] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 54 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
loratadine, descarboethoxyloratadine, fexofenadine or
cetirizine.
[0189] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 55 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
loratadine, descarboethoxyloratadine fexofenadine or
cetirizine.
[0190] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 253A in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: loratadine, descarboethoxyloratadine, fexofenadine or
cetirizine.
[0191] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 287 in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: loratadine, descarboethoxyloratadine, fexofenadine or
cetirizine.
[0192] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 320 in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: loratadine, descarboethoxyloratadine, fexofenadine or
cetirizine.
[0193] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 32 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
loratadine or descarboethoxyloratadine.
[0194] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 54 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
loratadine or descarboethoxyloratadine.
[0195] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 55 in combination with an
effective amount of an H.sub.1 receptor antagonist selected from:
loratadine or descarboethoxyloratadine.
[0196] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 253A in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: loratadine or descarboethoxyloratadine.
[0197] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 287 in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from, loratadine or descarboethoxyloratadine.
[0198] Another embodiment of this invention is directed to a method
of treating: allergy, allergy-induced airway responses, and
congestion comprising administering to a patient in need of such
treatment an effective amount of Compound 320 in combination with
an effective amount of an H.sub.1 receptor antagonist selected
from: loratadine or descarboethoxyloratadine.
[0199] R.sup.1 is preferably selected from: [0200] (A) aryl (most
preferably phenyl); [0201] (B) substituted aryl (e.g., substituted
phenyl), wherein the substituents on said substituted aryl are most
preferably selected from: (1) halo (e.g., monohalo or dihalo), more
preferably chloro or fluoro, even more preferably monochloro,
dichloro, monofluoro or difluoro; or (2) alkyl, more preferably
unbranched (i.e., straight chain, e.g., methyl) alkyl, even more
preferably substituted alkyl, still more preferably alkyl
substituted with halo (e.g., 1, 2 or 3 halo atoms, such as Cl or
F), even still more preferably alkyl substituted with fluoro atoms,
yet still more preferably trifluoromethyl; [0202] (C) heteroaryl,
most preferably a five or six membered heteroaryl ring, more
preferably a six membered heteroaryl ring, and still more
preferably pyridyl, examples of heteroaryl rings include pyridyl,
thienyl, pyrimidinyl, thiazolyl or pyridyl N-Oxide, most preferred
heteroaryl rings are exemplified by
##STR00016##
[0202] is preferred more; [0203] (D) substituted heteroaryl, most
preferably halo or alkyl substituted heteroaryl (e.g., halopyridyl
(e.g., fluoropyridyl) and alkylthiazolyl), more preferably
substituted heteroaryl wherein the substituents are independently
selected from the same or different alkyl groups (even more
preferably one straight chain alkyl group, e.g., methyl), still
more preferably alkyl substituted thiazolyl, and even more
preferably
##STR00017##
[0203] yet even more preferably
##STR00018## [0204] (E) when R.sup.1 is taken together with X, then
the moiety is
##STR00019##
[0204] wherein c is most preferably 0 or 1, and when c is 1 then
R.sup.6 is most preferably halo, and when c is 1 then R.sup.6 is
more preferably fluoro.
[0205] X is preferably .dbd.C(NOR.sup.3) wherein R.sup.3 is
preferably selected from H, alkyl or halo substituted alkyl (e.g.,
fluoro substituted alkyl, such as --CH.sub.2CF.sub.3), most
preferably alkyl, more preferably methyl or ethyl, and still more
preferably methyl.
[0206] Preferably M.sup.2 is nitrogen.
[0207] n is preferably 2.
[0208] a is preferably 0 or 1, and most preferably 0.
[0209] b is preferably 0 or 1 and most preferably 0.
[0210] c is preferably 0 or 1, and most preferably 0, and when c is
1 then R.sup.6 is preferably halo, and when c is 1 R.sup.6 is most
preferably fluoro.
[0211] e is preferably 1-5.
[0212] Y is preferably .dbd.C(O) (i.e., .dbd.C.dbd.O).
[0213] M.sup.3 and M.sup.4 are preferably selected such that: (1)
one is carbon and the other is nitrogen, or (2) both are nitrogen,
with M.sup.3 most preferably being carbon.
[0214] p is preferably 2.
[0215] Z is preferably C.sub.1 to C.sub.3 alkyl, and most
preferably
##STR00020##
[0216] R.sup.2 is preferably a six membered heteroaryl ring, most
preferably pyridyl, substituted pyridyl, pyrimidinyl or substituted
pyrimidinyl, more preferably pyridyl, pyridyl substituted with
--NR.sup.4R.sup.5, pyrimidinyl or pyrimidinyl substituted with
--NR.sup.5, still more preferably pyridyl, pyridyl substituted with
--NH.sub.2 (i.e., R.sup.4 and R.sup.5 are H), pyrimidinyl or
pyrimidinyl substituted with --NH.sub.2 (i.e., R.sup.4 and R.sup.5
are H), and even more preferably
##STR00021##
and still even more preferably
##STR00022##
[0217] R.sup.3 is preferably H or alkyl, most preferably H or
methyl.
[0218] R.sup.4 is preferably H or lower alkyl, most preferably H or
methyl, and more preferably H.
[0219] R.sup.5 is preferably H, C.sub.1 to C.sub.6alkyl or
--C(O)R.sup.4, most preferably H or methyl, and more preferably
H.
[0220] R.sup.12 is preferably alkyl, hydroxyl or fluoro, and most
preferably H.
[0221] R.sup.13 is preferably alkyl, hydroxyl or fluoro, and most
preferably H.
[0222] Representative compounds of this invention include, but are
not limited to: Compounds 23, 30, 31, 32, 33, 41, 44, 45, 49, 50,
52, 53, 54, 55, 56, 57A, 59, 65, 75, 76, 80, 82, 83, 88, 92, 99,
104, 105, 110, 111, 117, 121, 123, 127, 128, 200-241, 244-273, 275,
and 278-282, 287, 296, 301-439 and 446.
[0223] Thus, representative compounds of this invention include,
but are not limited to: Compounds 23, 30, 31, 32, 33, 44, 45, 49,
50, 53, 54, 55, 59, 75, 76, 83, 88, 92, 99, 104, 110, 117, 128,
200, 201, 203-215, 217-241, 244-246, 246A, 247-253, 253A, 254-273,
275, 278, and 280-282, 317, 334 and 403.
[0224] Preferred compounds of this invention are selected from:
Compound 23, 30, 31, 32, 33, 50, 53, 54, 55, 56, 57A, 59, 92, 212,
215, 218, 219, 220, 224, 225, 226, 227, 229, 233, 235, 237, 238,
246, 246A, 247, 248, 251, 253, 253A, 268-273, 275, 278-281, 287,
296, 301, 304-307, 309, 312, 314-318, 320-356, or 358-376.
[0225] Most preferred compounds of this invention are selected
from: Compound 30, 31, 32, 33, 54, 55, 56, 57A, 225, 237, 246A,
253A, 273, 280, 287, 296, 301, 304-307, 309, 312, 314-318, 320-348,
350-356, 359-372, and 374-376.
[0226] Thus, one embodiment of this invention is directed to
Compound 32.
[0227] Another embodiment of this invention is directed to Compound
54.
[0228] Another embodiment of this invention is directed to Compound
55.
[0229] Another embodiment of this invention is directed to Compound
253A.
[0230] Another embodiment of this invention is directed to Compound
287.
[0231] Another embodiment of this invention is directed to Compound
320.
[0232] Structures for the above compounds are found in the Examples
below, and in Tables 1 to 3 below.
[0233] The more preferred compound of this invention is the
compound of the formula:
##STR00023##
[0234] This invention also provides a compound of the formula:
##STR00024##
[0235] This invention also provides a compound of the formula,
##STR00025##
[0236] Compounds 32A and 32B can also be used in the pharmaceutical
compositions, and the methods of this invention.
[0237] The following processes may be employed to produce compounds
of the invention.
[0238] One synthetic route involves a linear sequence of reactions
to obtain the desired compounds, i.e.,
A+B.fwdarw.AB+C.fwdarw.ABC+D.fwdarw.ABCD
[0239] This linear sequence of reactions to synthesize compounds of
this invention is illustrated below. In the illustrated procedure
R.sup.1 is aryl, heteroaryl, or alkyl; X=a ketone, oxime or
substituted oxime; M.sup.1=M.sup.3=carbon;
M.sup.2=M.sup.4=nitrogen; Y is C.dbd.O; Z.dbd.CHR; R.sup.2 is
heteroaryl; and n and m=2 (n and m being 1 can also be prepared by
this procedure).
Step: 1 Synthesis of Ketone 8
##STR00026##
[0241] In the above equations PG represents a protecting group, and
M represents Li or MgX.sup.1 (wherein X.sup.1 represents Cl, Br or
I).
[0242] In equation 1 and 2, a Grignard reagent 2 is reacted with an
electrophile such as the aldehyde 1 or the nitrile 4 in a suitable
aprotic solvent such as THF or ether. PG represents a protecting
group. Suitable protecting groups include, for example, methyl and
benzyl. In the case of nitrite 4, acidic workup yields the ketone 8
directly. Alcohol 3 can be oxidized by a number of different
reagents to give 8. Alternatively, the amide 7 can be reacted with
an organometallic reagent to directly give the ketone 8. Suitable
protecting groups for this step include carbamates or amides or the
like. Thus, examples of protecting groups in equation 3 include
t-BOC, CBZ and FMOC.
Step 2: Deprotection of 8
##STR00027##
[0244] When the protecting group, PG, is a methyl group, said
methyl group can be removed using a reagent such as a
chloroformate; when PG is a carbamate, such as, a t-Boc group, it
can be removed by dilute acid, such as, for example HCl.
Step 3: Synthesis of 11
##STR00028##
[0246] Amine 9 can be coupled to acid 10 using a number of methods
well known in the art such as DCC or PyBOP. Alternatively, the acid
10 can be activated by conversion to the acid chloride or mixed
anhydride and then reacted with the amine 9 to give 11. Suitable
protecting groups for 10 include, for example, t-Boc.
Step 4: Synthesis of Amine 12
##STR00029##
[0248] Compound 11 in which the protecting group is a t-Boc can be
deprotected under acidic conditions such as HCl in dioxane or TFA
in CH.sub.2Cl.sub.2 to give the amine 12.
Step 5: Synthesis of Compound 14
##STR00030##
[0250] R.sup.30 in 13 represents an alkyl group. E is a leaving
group, halogen, or E is a carbonyl group.
[0251] Compound 14 can be prepared by reacting amine 12 with 13.
When E represents a carbonyl group (C.dbd.O), 12 and 13 are
combined in a solvent such as CH.sub.2Cl.sub.2 in the presence of
molecular sieves. After the reaction is complete (e.g., 1 to 10 h),
a reducing agent such as NaBH(OAc).sub.3 is added. Alternatively,
when E is a halogen atom such as Cl or Br, 12 and 13 are combined
in a solvent, such as OMF, in the presence of a tertiary amine base
to give the product 14. Suitable protecting groups include, for
example t-Boc, phthaloyl.
Step 6: Synthesis of Compound 16
##STR00031##
[0253] Compound 14 can be converted to the oxime 15 by combining 14
with H.sub.2NOR.sup.3.HCl in pyridine at a temperature of
40-60.degree. C. Alternatively, 14 can be combined with
H.sub.2NOR.sup.3. HCl in an alcoholic solvent in the presence of a
base, such as, NaOAc, to give 15.
[0254] An alternate approach to the synthesis of compounds of
Formula I involves the synthesis of the two halves of the molecule
followed by coupling of the two pieces, i.e.,
A+B.fwdarw.AB
C+D.fwdarw.CD
AB+CD.fwdarw.ABCD
[0255] In this case, the synthesis of the AB fragment is the same
as that described above. The synthesis of the CD fragment is given
below.
Step 1: Synthesis of Compound 17
##STR00032##
[0257] R.sup.30 is as defined above (i.e., alkyl). R.sup.35 is
methyl or ethyl.
[0258] Compound 17 is synthesized in the same manner as that
described for the synthesis of compound 14.
Step 2: Synthesis of Compound 18
##STR00033##
[0260] M represents Li, Na, or K.
[0261] Compound 17 is saponified in a mixed solvent, such as, for
example: (1) EtOH or MeOH and water, or (2) THF, water, and MeOH,
using an alkali metal base such as LiOH or NaOH at a temperature of
from 50 to 100.degree. C. to give the salt 18.
[0262] Compound 18 can be combined with compound 9, as described
above, to give 14. The remaining steps are the same.
[0263] Compounds useful in this invention are exemplified by the
following examples which should not be construed as limiting the
scope of the disclosure. Alternative mechanistic pathways and
analogous structures within the scope of the invention may be
apparent to those skilled in the art.
EXAMPLE 1
Step 1
##STR00034##
[0265] To a solution of 10.81 g (100 mmol) of
2-amino-4-methylpyridine in 250 ml of tert-butanol was added 26.19
g (120 mmol) of BOC anhydride. The reaction mixture was stirred at
room temperature overnight, concentrated, loaded on silica gel and
flash chromatographed (from 30% hexanes/CH.sub.2Cl.sub.2 to 0-2%
acetone/CH.sub.2Cl.sub.2) to produce 15.25 g (73.32 mmol; 73%) of
1A as a white solid.
Step 2
##STR00035##
[0267] To a -78.degree. C. solution of 1A (35.96 g, 173 mmol) in
THF (1.4 L) was added 1.4 M BuLi solution (272 ml, 381 mmol) in
hexanes in portions over 30 min. Reaction mixture was then allowed
to warm up and was stirred for 2 h at room temperature, which
resulted in the formation of an orange precipiate. The mixture was
cooled back to -78.degree. C., and predried oxygen (passed through
a Drierite column) was bubbled through the suspension for 6 h while
the temperature was maintained at -78.degree. C. Reaction mixture
color changed to yellow during this time. It was then quenched at
-78.degree. C. with 51.4 ml (700 mmol) of Me.sub.2S followed by 22
ml (384 mmol) of AcOH. Reaction mixture was allowed to warm up and
was stirred for 48 h at room temperature. Dilution with water and
extraction with EtOAc were followed by concentration and flash
chromatography (0-15% acetone/CH.sub.2Cl.sub.2) to provide 20.15 g
(90 mmol; 52%) of alcohol 2A as a pale yellow solid.
Step 3
##STR00036##
[0269] To a solution of 19.15 g (85.5 mmol) of alcohol 2A in 640 ml
of CH.sub.2Cl.sub.2 was added saturated aqueous solution of 8.62 g
(103 mmol) of NaHCO.sub.3 and 444 mg (4.3 mmol) of NaBr. Reaction
mixture was cooled to 0.degree. C., and 140 mg (0.90 mmol) of TEMPO
was introduced. Upon vigorous stirring 122 ml of 0.7 M (85.4 mmol)
commercial bleach solution (5.25% in NaOCl) was added in portions
over 40 min. After additional 20 min at 0.degree. C. reaction
mixture was quenched with saturated aqueous Na.sub.2S.sub.2O and
allowed to warm to room temperature. Dilution with water and
extraction with CH.sub.2Cl.sub.2 were followed by concentration and
flash chromatography (from 30% hexanes/CH.sub.2Cl.sub.2 to 0-2%
acetone/CH.sub.2Cl.sub.2) to afford 15.97 g (71.9 mmol; 84%) of
aldehyde 3A as an off-white solid.
Step 4
##STR00037##
[0271] To a solution of 11.87 g (53.5 mmol) of aldehyde 3A in 370
ml of CH.sub.2Cl.sub.2 was added 9.07 ml (58.8 mmol) of ethyl
isonipecotate followed by four drops of AcOH. Reaction mixture was
then stirred for 40 min at room temperature after which 22.68 g
(107 mmol) of NaBH(OAc).sub.3 was introduced. Reaction mixture was
stirred overnight at room temperature, neutralized with saturated
aqueous NaHCO.sub.3, diluted with water and extracted with
CH.sub.2Cl.sub.2. Concentration and flash chromatography (0-4% sat.
NH.sub.3 in MeOH/CH.sub.2Cl.sub.2) provided 19.09 mg (52.6 mmol;
98%) of 4A as an off-white solid.
Step 5
##STR00038##
[0273] To a solution of 1.57 g (4.33 mmol) of ester 4A in 10 ml of
a 3:1:1 mixture of THF-water-methanol was added 0.125 g (5.21 mmol)
of LiOH. Reaction mixture was stirred overnight at room
temperature, concentrated and exposed to high vacuum to obtain 1.59
g of crude acid 5A as a yellowish solid which was used without
purification.
EXAMPLE 2
##STR00039##
[0275] A solution of compound 6A (42 mmol), NBS (126 mmol) and
Bz.sub.2O.sub.2 (4.2 mmol) in CCl.sub.4 (400 ml) was refluxed at
80.degree. C. for 5 h, cooled and stirred at room temperature
overnight. The reaction was filtered and concentrated, and the
residue was purified by flash column (30% EtOAc/Hexane) to obtain
the desired compound 7A (3.1 g, 23%).
EXAMPLE 3
Step 1
##STR00040##
[0277] To a solution of 8A (10 g, 79.4 mmol) and DMAP (0.029 g,
0.24 mmol) in methylene chloride (150 mL) at 0.degree. C. was added
phthaloyl dichloride (16.1 g, 79.4 mmol) dropwise. The reaction
mixture was stirred at room temperature overnight. After stirring
overnight, the reaction was washed with saturated aqueous
NaHCO.sub.3, water, dried and concentrated to give compound 9A as a
yellow solid (20 g, 99.8%) which was used without further
purification.
Step 2
##STR00041##
[0279] In a manner similar to that described in Example 27 compound
9A (20 g, 79.3 mmol) was convened to compound 10A.
[0280] Step 3
##STR00042##
[0281] Compound 10A (0.5 g, 1.5 mmol) and hydrazine (0.5 M in
ethanol, 5 mL, 2.5 mmol) were combined and stirred at room
temperature overnight. The reaction was diluted with water and
extracted with methylene chloride. The organic layer was dried,
concentrated and the residue purified on a flash column (3%
methanol in ethyl acetate) to give compound 11A (0.2 g, 66%).
EXAMPLE 4
Step 1
##STR00043##
[0283] Compounds 12A (2 g, 18.3 mmol) and 13A (3.5 g, 22 mmol) were
dissolved in methylene chloride and stirred at room temperature for
1 h. NaB(OAc).sub.3H (5.4 g, 25.6 mmol) was added and the mixture
stirred at room temperature for 5 h. The reaction was washed with
saturated aqueous NaHCO.sub.3, dried and concentrated, and the
residue purified by flash column (2% methanol in ethyl acetate).
Compound 14A was obtained (4.5 g, 99%).
Step 2
##STR00044##
[0285] In a manner similar to that described in Example 1, Step 5,
compound 14A (0.35 g, 1.4 mmol) was converted to compound 15A (0.31
g, 100%).
EXAMPLE 5
Step 1
##STR00045##
[0287] To the solution of 2,4-diflorobenzylaldehyde (16A, 28.1
mmol) in THF (10 ml) was added the Grignard reagent 17A (1.33M in
THF, 30 ml), and the mixture was stirred at room temperature
overnight. The reaction was quenched with saturated NH.sub.4Cl (150
ml), extracted three times with EtOAc (100 ml), dried, filtered and
concentrated. Flash chromatography (20% MeOH/EtOAc) yielded the
desired compound 18A (1.8 g, 27%).
Step 2
##STR00046##
[0289] Compound 18A (1.6 g, 6.7 mmol), H.sub.2NHOH.HCl (0.95 g, 6.7
mmol) and pyridine (10 mL) were combined and heated to 60.degree.
C. overnight. The pyridine was removed under vacuum and the residue
treated with methylene chloride and saturated aqueous NaHCO.sub.3.
The organic layer was separated, dried, and concentrated, and the
residue purified by flash chromatography to give compound 19A (1.4
g, 82%).
Step 3
##STR00047##
[0291] To the suspension of NaH (0.41 g, 10.2 mmol) in THF (10 ml)
was slowly added a solution of 19A (1.3 g, 5.11 mmol) in DMF (5 mL)
dropwise and the reaction stirred at 70.about.75.degree. C.
overnight. The mixture was extracted twice with EtOAc and three
times with H.sub.2O (30 mL), dried over MgSO.sub.4 and concentrated
to give crude 20A which was used without further purification (1.04
g, 87%).
Step 4
##STR00048##
[0293] To the solution of compound 20A (4.3 mmol) in dichloroethane
(20 ml) at 0.degree. C. was added 2-chloroethyl chloroformate (6.2
mmol) and triethylamine (7.2 mmol) and the reaction was stirred at
room temperature overnight. The solvent was evaporated, Et.sub.2O
was added to the residue, and the unreacted starting material was
removed by filtration. The filtrate was concentrated and the
residue redissolved in MeOH and refluxed for 30 min. Removal of the
methanol gave the product 21 (0.3 g) which was used without further
purification.
Step 5
##STR00049##
[0295] To a mixture of compound 21 (1.64 mmol), compound 5A (1.64
mmol) and PyBOP (1.64 mmol) was added DIPEA (4.92 mmol) and
CH.sub.2Cl.sub.2 (10 ml), and the reaction was stirred over the
weekend at room temperature. Saturated NaHCO.sub.3 (100 ml) was
added and the reaction was extracted and twice with
CH.sub.2Cl.sub.2 (100 mL), dried over solid MgSO.sub.4,
concentrated and flash chromatographed (70% EtOAc/Hexane) to give
compound 22 (1.04 mmol, 64%).
Step 6
##STR00050##
[0297] Compound 22 (0.2 g, 0.37 mmol) was dissolved in
CF.sub.3CO.sub.2H (3 mL) and methylene chloride (3 mL) and stirred
at room temperature overnight. The solvent was removed by
evaporation, saturated aqueous NaHCO.sub.3 was added and mixture
extracted with methylene chloride. The organic layer was dried
(MgSO.sub.4), filtered and concentrated, and the residue purified
by flash chromatography to give compound 23 (0.11 g 68%).
EXAMPLE 6
Step 1
##STR00051##
[0299] A solution of 24 (50 g, 387 mmol) and triethylamine (110 mL)
in dioxane (400 mL) and water (400 mL) at 4.degree. C. was treated
with Boc.sub.2O (93 g, 426 mmol). The cooling bath was removed and
the solution allowed to warm to room temperature, After 21 h, the
volume was reduced by two-thirds under vacuum. The residue was
poured into ethyl acetate (250 mL) and water (250 mL). Saturated
aqueous NaHCO.sub.3 (250 mL) was added and the organic phase was
separated and discarded. The aqueous phase was acidified with 10%
HCl and extracted with ethyl acetate. The combined organic phases
were washed with water, brine, and dried (Na.sub.2SO.sub.4), and
concentrated to give 25 as a white powder (82 g, 94%).
Step 2
##STR00052##
[0301] To a solution of compound 25 (40 g, 175 mmol) in DMF (250
mL) at 4.degree. C. was added N,O-dimethylhydroxylamine,
hydrochloride (34 g), EDCl (44 g, 0.228 mol), HOBT (2.4 g), and
DIPEA (120 mL). The reaction was warmed to room temperature and
stirred overnight. The reaction was then concentrated to half
volume in vacuo and poured onto 1:1 ethyl acetate:water. The
organic layer was separated and the aqueous layer extracted with
additional ethyl acetate. The combined organic layers were washed
with saturated aqueous NH.sub.4Cl, saturated aqueous NaHCO.sub.3,
water, and brine, and dried. Concentration gave 26 as a light
yellow oil (46.7 g, 99%)
Step 3
##STR00053##
[0303] To a solution of 2-bromopyridine (17.6 mL, 0.184 mol) in THF
(600 mL) at -78.degree. C. was added n-BuLi (115 mL of a 1.6M
solution in hexanes, 0.184 mol) dropwise over 15 min. After
stirring for an additional 30 min at this temperature, a solution
of 26 (25 g, 91.9 mmol) in THF (500 mL) was added dropwise over 15
min. The reaction was removed from the cold bath and placed in an
oil bath and heated to 60.degree. C. for 1.5 h. The reaction was
then cooled to 4.degree. C., diluted with ether (500 mL), and
treated with saturated aqueous Na.sub.2SO.sub.4 (.apprxeq.5 mL).
The mixture was transferred to an Erlenmeyer flask and diluted with
additional ether (700 mL). Additional saturated aqueous
Na.sub.2SO.sub.4 was added followed by solid Na.sub.2SO.sub.4. The
mixture was filtered through a plug of solid Na.sub.2SO.sub.4 and
concentrated in vacuo. Flash column chromatography (0-20% ethyl
acetate in hexanes) yielded compound 27 as a yellow oil (16.85 g,
63%).
Step 4
##STR00054##
[0305] A solution of 27 (3.3 g, 11.4 mmol) in methanol (50 mL) was
treated with 4M HCl in dioxane (50 mL) and stirred at room
temperature for 1.5 h. Removal of the solvent in vacuo gave 28 as a
tan powder (3 g, 100%).
Step 5
##STR00055##
[0307] To a suspension of compound 5A (17.4 g, 50 mmol), compound
28 (11 g, 42 mmol), and diisopropylethylamine (34.6 mL, 199 mmol)
in DMF (125 mL) was added HOBT (7.83 g, 58 mmol), EDC (18.54 g,
96.7 mmol), and 4 .ANG. molecular sieves. The mixture was stirred
for 40 h at room temperature, diluted with methylene chloride (600
mL) and 0.5 N NaOH (400 mL) and filtered. The precipitate was
washed thoroughly with additional 0.5N NaOH and methylene chloride.
The combined organic phases were concentrated and chromatographed
twice on silica gel (1:1 hexane:methylene to chloride to 6%
saturated NH.sub.3 in methanol in methylene chloride) to produce 29
as a tan solid (22.3 g) which was used as is in the next step.
Step 6
##STR00056##
[0309] A solution of 29 (22.3 g, 44 mmol) in methylene chloride
(120 mL) and trifluoroacetic acid (60 mL) was stirred for 7 h at
room temperature. The reaction was concentrated, exposed to high
vacuum for 3 h, dissolved in toluene and concentrated and then
exposed again to high vacuum. The so-obtained crude brown oil was
used in the next step without further purification.
Step 7
##STR00057##
[0311] Compound 30 (.about.17.9 g, 44 mmol) was dissolved in
pyridine (420 mL), treated with H.sub.2NOCH.sub.3.HCl (21.78 g, 264
mmol) and heated to 90.degree. C. for 14 h. The reaction was then
concentrated and the residue taken up in a mixture of methylene
chloride (500 mL) and 2N NaOH (500 mL). The organic phase was
separated and the aqueous phase extracted with additional methylene
chloride (300 mL). The organic phases were dried and concentrated,
and the residue chromatographed on SiO.sub.2 (0-13% NH.sub.3/MeOH
in CH.sub.2Cl.sub.2) to produce a yellow solid (9.26 g). The mixed
fractions from the column were rechromatographed to give an
additional 3.23 g of the desired material. Total yield 12.49 g (65%
yield over the last two steps).
Step 8
##STR00058##
[0313] Compound 31 (1 g) in ethanol (15 mL) was separated into the
pure isomers using a Chiralcel AD column (20 mm.times.500 mm)
(eluent: 75:25 hexane:isopropanol plus 0.5% N,N-diethylamine; flow
rate: 50 mL/min; UV detection at 254 nM) to give compound 32 (0.6
g) and compound 33 (0.4 g). [M+H].sup.+ 437 for 32 and 33.
[0314] Alternatively, compound 32 can preferably be prepared from
compound 5A in a manner similar to that described for compound 287
in Step 3 of Example 28.
EXAMPLE 7
Step 1
##STR00059##
[0316] To a solution of 34 (2.4 g, 13.5 mmol) in THF (15 mL) was
added compound 35 (26 mL of a 1.3M solution) and the reaction
stirred overnight at room temperature. 2N HCl was then added till
the pH<2 and the THF was removed under reduced pressure. The pH
was neutralized by the addition of 1N NaOH and the aqueous phase
extracted with 5% MeOH in EtOAc. The organic phase was dried,
concentrated, and the residue chromatographed (20% MeOH in EtOAc)
to give 36 (1.03 g, 28%).
Step 2
##STR00060##
[0318] To a solution of 36 (1.03 g, 3.78 mmol) in
1,2-dichloroethane (30 mL) was added 1-chloroethylchloro formate
(0.76 mL, 7.6 mmol) and the reaction stirred at room temperature
overnight. The solvent was removed in vacuo and the residue washed
with ether. Solid residue was removed by filtration and the ether
removed by evaporation to give an oil which was dissolved in MeOH
(15 mL) and heated to reflux for 2 h. Removal of the solvent gave
37 which was used in the next step without further purification
(1.4 g).
Step 3
##STR00061##
[0320] Compound 37 (0.98 g, 3.78 mmol), N-Boc isonipocotic acid
(0.87 g, 3.78 mmol), DEC (1.11 g, 5.7 mmol), (0.68 g, 4.91 mmol)
and DIPEA (3 mL) were combined in CH.sub.2Cl.sub.2 (40 mL) and
stirred overnight at room temperature. The reaction was then
diluted with CH.sub.2Cl.sub.2 and washed with saturated aqueous
NaHCO.sub.3. The organic layer was dried, concentrated and the
residue chromatographed (10% hexane in EtOAc) to give 38 (1.61 g
7.91%).
Step 4
##STR00062##
[0322] Compound 38 (1.61 g, 3.43 mmol) in CH.sub.2Cl.sub.2 (15 mL)
was treated with 1N HCl in dioxane (5.2 mL) and stirred overnight
at room temperature. The solvent was removed in vacuo to give 39
(1.65 g) which was used without further purification.
Step 5
##STR00063##
[0324] Compound 39 (1.65 g, 4.01 mmol), 7 (1.29 g, 4.07 mmol) and
Et.sub.3N (1.7 mL) were combined in DMF (40 mL) and stirred at room
temperature overnight. The reaction was dissolved in EtOAc and
washed 4 times with water. The organic layer was dried and
concentrated, and the residue purified by chromatography (5% MeOH
in EtOAc) to give 40 (0.6 g, 47%).
Step 6
##STR00064##
[0326] A solution of 40 (0.31 g, 0.51 mmol) in pyridine (5 mL) was
treated with H.sub.2NOMe.HCl (0.092 g, 1.08 mmol) and heated to
60.degree. C. overnight. The reaction was diluted with 10% MeOH in
CH.sub.2Cl.sub.2, washed with saturated aqueous NaHCO.sub.3 dried,
and concentrated, and the residue purified by chromatography
(10-15% MeOH in EtOAc) to give 41 (0.09 g).
EXAMPLE 8
Step 1
##STR00065##
[0328] In a manner similar to that described in Example 7, Steps
3-4, compound 42 was converted to compound 43.
Step 2
##STR00066##
[0330] To a solution of 43 (2.3 g, 6.3 mmol) in CH.sub.2Cl.sub.2
(60 mL) was added 4 .ANG. molecular sieves and 4-formylpyridine
(0.68 mL, 6.9 mmol) and the mixture stirred for 3 h at room
temperature, Na(OAc).sub.3BH (2.7 g, 12.7 mmol) was then added and
the reaction stirred for 1 h. The reaction was quenched by the
addition of NH.sub.4Cl followed by the addition of saturated
aqueous NaHCO.sub.3. The reaction mixture was then extracted with
EtOAc, and the combined organic layers were dried and concentrated
to give a residue which was chromatographed (20% MeOH in EtOAc).
Compound 44 was obtained (2.3 g 87%).
Step 3
##STR00067##
[0332] In a manner similar to that described in Example 7, Step 6,
compound 44 was converted to compound 45.
EXAMPLE 9
Step 1
##STR00068##
[0334] In a manner similar to that described in Example 8, Step 2,
compound 46 (1.13 g, 6 mmol) was converted to compound 47 (1.7 g,
100%).
Step 2
##STR00069##
[0336] In a manner similar to that described in Example 7, Step 4,
compound 47 (1.7 g, 6.13 mmol) was converted to compound 48 (1.9 g,
100%).
Step 3
##STR00070##
[0338] A mixture of compound 48 (0.57 g, 2 mmol) and compound 42
(0.52 g, 2 mmol) in CH.sub.2Cl (20 mL) was added Et.sub.3N (1.95
mL) and the reaction cooled to -40.degree. C. Triphosgene (0.2 g)
was added and the reaction stirred at -40.degree. C. for 2 h and
room temperature for 48 h. The reaction was then washed with 1N
NaOH, brine, and the organic layer dried. Concentration gave a
residue that was purified by column chromatography (10% MeOH in
EtOAc) to give 49 (0.14 g, 55%).
Step 4
##STR00071##
[0340] In a manner similar to that described in Example 7, Step 6,
compound 49 (0.09 g, 0.21 mmol) was converted to compound 50.
EXAMPLE 10
##STR00072##
[0342] In a manner similar to that described in Example 7, Steps
3-4, compound 28 (2.6 g, 9.9 mmol) was converted to compound 51
(1.1 g).
Step 2
##STR00073##
[0344] In a manner similar to that described in Example 7, Step 5,
compound 51 (1.1 g, 2.94 mmol) was reacted with compound 11 (0.59
g, 2.94 mmol) to give compound 52 (0.53 g).
##STR00074##
[0345] In a manner similar to that described in Example 6, Step 7,
compound 52 (0.53 g, 1.26 mmol) was converted to compound 53 (0.48
g).
Step 4
##STR00075##
[0347] In a manner similar to that described in Example 6, Step 8,
the 4 diastereomers of compound 53 could be obtained using a
Chiralcel AD column (75:25 hexane:EtOAc plus 0.5% Et.sub.2NH). The
two faster eluting compounds (54 and 55) were the E-oxime isomers
and the slower eluting compounds (56 and 57A) were the Z-oxime
isomers.
TABLE-US-00001 Isomer A 54 0.12 g Isomer B 55 0.11 g Isomer C 56
0.08 g Isomer D 57A 0.06 g
EXAMPLE 11
Step 1
##STR00076##
[0349] A solution of n-BuLi (4.2 mL of a 1.6 M solution in hexane)
in THF (25 mL) was treated at -25.degree. C. with (i-Pr).sub.2NH
(0.69 g, 6.8 mmol). The reaction was stirred for 1 h at 0.degree.
C. and then cooled to -70.degree. C. Compound 4A (0.82 g, 2.26
mmol) in THF (5 mL) was added dropwise and the reaction stirred at
-70.degree. C. for 2 h and -50.degree. C. for 2 h. The to reaction
was recooled to -70.degree. C. and
(1S)-(+)-(10-camphorsulfonyl)oxaziridine (1.04 g, 4.52 mmol) in THF
(5 mL) was added. The reaction was stirred at -70.degree. C. for 2
h and slowly warmed to room temperature overnight. The reaction was
quenched by the addition of saturated aqueous NH.sub.4Cl and
extracted with EtOAc. The organic layer was dried and concentrated,
and the residue purified by column chromatography (1:1
hexane:EtOAc) to give 57 (0.44 g, 51%).
Step 2
##STR00077##
[0351] In a manner similar to that described in Example 1, Step 5,
compound 57 (0.42 g, 1.1 mmol) was converted to compound 58 (0.4
g).
Step 3
##STR00078##
[0353] In a manner similar to that described in Example 6, Steps
5-8, compound 58 (0.25 g, 0.7 mmol) was converted to compound 59
(0.1 g).
EXAMPLE 12
Step 1
##STR00079##
[0355] A solution of compound 60 (10 g, 50.7 mmol) in ether (150
mL) at -78.degree. C. was treated sequentially with TMEDA (11.8 g,
101.4 mmol) and s-BuLi (58.5 mL of a 1.3M solution in hexanes, 76
mmol) and the reaction stirred at this temperature for 6 h. Neat
CH.sub.3SO.sub.4CH.sub.3 (12.8 g, 101.4 mmol) was then added and
the reaction allowed to slowly warm to room temperature overnight.
Saturated aqueous NaCl was added and the organic layer was
separated. The aqueous layer was extracted three times with ether
and the combined organic layers were dried, concentrated, and the
residue chromatographed (5% EtOAc in hexane) to give 61 (8.0 g,
75%).
Step 2
##STR00080##
[0357] A solution of 61 (8 g, 37.9 mmol) in THF (40 mL) at
0.degree. C. was treated dropwise with a solution of BH.sub.3. THF
(45.4 mL of a 1.0M solution in THF, 45.4 mmol) and the reaction
allowed to slowly warm to room temperature overnight. The reaction
was recooled to 0.degree. C., EtOH (13 mL), pH=7 buffer (25 mL) and
H.sub.2O.sub.2 (25 mL) was added, and the reaction allowed to stir
at room temperature overnight. The solvent was then removed in
vacuo and the residue poured into water and CH.sub.2Cl.sub.2. 10%
aqueous NaOH (10 mL) was added and the organic layer separated. The
aqueous layer was extracted with additional CH.sub.2Cl.sub.2 and
the combined organic layers were dried and concentrated. The
residue was chromatographed (40% EtOAc in hexane) to give 62 (3
g).
Step 3
##STR00081##
[0359] A solution of 62 (2.8 g, 12.2 mmol) in EtOAc (30 mL) and
NaBr (1.26 g, 0.12 mmol) in saturated aqueous NaHCO.sub.3 (30 mL)
was cooled to 0.degree. C. and treated with TEMPO (0.02 g, 0.12
mmol). After 15 min., NaOCl (17.44 mL) was added and the mixture
stirred for 3 h. Saturated aqueous Na.sub.2S.sub.2O.sub.3 was added
and the pH adjusted to 5-6 by the addition of 1N HCl. The mixture
was extracted with EtOAc and the organic layers were dried and
concentrated. The residue was chromatographed (10-20% EtOAc in
hexane) to give compound 63 (2.1 g, 76%).
Step 4
##STR00082##
[0361] To a cooled (0.degree. C.) suspension of PCC (0.95 g, 44
mmol) in CH.sub.2Cl.sub.2 (5 mL) was added dropwise a solution of
63 (0.5 g, 2.2 mmol). And the mixture stirred overnight at room
temperature. Additional PCC (1 eq.) was added and the mixture was
heated to reflux for 2 h. The reaction was cooled, filtered through
celite, and concentrated to give crude 64 (1.5 g) which was used
without further purification.
Step 5
##STR00083##
[0363] In a manner similar to that described in Example 5, Step 5,
Example 7, Step 4, Example 1, Step 4, and Example 6, Steps 6 and 7,
64 (0.73 g, 3 mmol) was converted to 65 (0.1 g).
EXAMPLE 13
Step 1
##STR00084##
[0365] To a 0.degree. C. solution of Vilsmeier salt, prepared by
the dropwise addition of phosphorus oxychloride (1500 mL; 1.61 mol)
to DMF (310.4 mL; 4.01 mol) over 15 min. and subsequent cooling in
an ice bath, was added malonic acid (40.1 g; 0.39 mol) in portions
over 45 min. The reaction mixture was then heated to 100.degree.
C., and the stirring was continued for 48 h. The reaction mixture
was then allowed to cool to room temperature and was quenched by
slowly pouring it into a suspension of NaHCO.sub.3 (808 g; 9.62
mol) in water. The solution was decanted off the excess of
NaHCO.sub.3 and concentrated to dryness under vacuum. After
exposure to high vacuum for 2 days, the solid residue was washed
repeatedly with CH.sub.2Cl.sub.2 until TLC indicated complete
removal of product. Combined organic extracts were concentrated
under vacuum to produce 41.0 g of dark brown oil, which was used
directly in the next step.
Step 2
##STR00085##
[0367] To a solution of 32.5 g (256 mmol) of crude malondialdehyde
66 in 650 ml of absolute ethanol was added 24.5 g (256 mmol) of
guanidine hydrochloride and 17.4 g (256 mmol) of sodium ethoxide.
The reaction mixture was refluxed for 4 h, cooled down to room
temperature, concentrated and dry loaded on silica gel under
vacuum. Flash chromatography (0-10% MeOH/20%
acetone/CH.sub.2Cl.sub.2) afforded 11.0 g (89.4 mmol; 23% from
malonic acid (2 steps)) of pyrimidine 67 as a light yellow
solid.
Step 3
##STR00086##
[0369] To a mixture of 166 mg (1.35 mmol) of aminopyrimidine 67, 17
mg (0.14 mmol) of DMAP and 418 .mu.L (3.00 mmol) of Et.sub.3N in 10
mL of THF was added 589 mg (2.7 mmol) of (BOC).sub.2O. The mixture
was stirred at room temperature for 5 h, concentrated-dry loaded on
silica gel and flash chromatographed (1-3%
acetone/CH.sub.2Cl.sub.2) to produce 117 mg (0.36 mmol; 27%) of 68
as a clear oil.
Step 4
##STR00087##
[0371] To a solution of 117 mg (0.36 mmol) of aldehyde 68 in 7 mL
of CH.sub.2Cl.sub.2 was added 67 .mu.L (0-43 mmol) of ethyl
isonipecotate and 5 .mu.L of acetic acid. 30 min. later 153 mg
(0.72 mmol) of NaBH(OAc).sub.3 was introduced. The mixture was
stirred overnight at room temperature, diluted with
CH.sub.2Cl.sub.2, washed with aqueous NaHCO.sub.3, dried and
concentrated, and crude residue was flash chromatographed (0-4%
sat. NH.sub.3 in MeOH/CH.sub.2Cl.sub.2) to produce 133 mg (0.29
mmol; 81%) of 69 as a white film.
Step 5
##STR00088##
[0373] To a solution of ester 69 in 5 mL of a 3:1:1 mixture of
THF-water-methanol was added 11 mg (0.44 mmol) of LiOH. Reaction
mixture was stirred overnight at room temperature, concentrated to
dryness and exposed to high vacuum to obtain 134 mg of crude acid
70 as a yellowish solid which was used without purification.
EXAMPLE 14
Step 1
##STR00089##
[0375] To a -78.degree. C. solution of 2.36 g (11.4 mmol) of
picoline 1A in 70 mL of THF was added 16.3 mL of 1.4 M BuLi
solution (22.8 mmol) in hexanes in portions over 10 min. Reaction
mixture was then allowed to warm up and was then stirred for 2 h at
room temperature, which resulted in the formation of an orange
precipiate. The mixture was cooled back to -78.degree. C., and
ethylene oxide was bubbled through the solution for 1 min. followed
by stirring for 5 min. This two-step sequence was repeated eight
times. The mixture was then allowed to warm to -50.degree. C.,
stirred at that temperature for 40 min., quenched with 1.34 mL (23
mmol) of AcOH and allowed to warm to room temperature. Dilution
with water was followed by extraction with EtOAc, concentration of
the organic phase, and flash chromatography of the crude residue
(10-15% acetone/CH.sub.2Cl.sub.2) to produce 1.50 g (5.95 mmol;
53%) of 71 as a white solid.
Step 2
##STR00090##
[0377] To a -60.degree. C. solution of 628 .mu.L (7.2 mmol) of
oxalyl chloride in 20 mL of CH.sub.2Cl.sub.2 was added dropwise
1.03 mL (14.5 mmol) of DMSO. After stirring the mixture for 15 min.
at -55.degree. C., a solution of 1.50 g (5.95 mmol) of alcohol 71
in 20 mL of CH.sub.2Cl.sub.2 was introduced over the period of 15
min. After the addition was complete, the mixture was stirred for
30 min. at -55.degree. C., followed by the addition of 4.18 mL
(30.0 mmol) of Et.sub.3N and stirring for another 15 min. The
reaction mixture was then warmed to room temperature and diluted
with water. Extraction with CH.sub.2Cl.sub.2 was followed by
concentration of the organic phase and flash chromatography (1-15%
acetone/CH.sub.2Cl.sub.2) to produce 1.00 g (4.00 mmol; 67%) of 72
as an off-white solid.
Step 3
##STR00091##
[0379] To a solution of 1.00 g (4.0 mmol) of aldehyde 72 in 25 mL
of CH.sub.2Cl.sub.2 was added 617 .mu.L (4.8 mmol) of ethyl
isonipecotate followed by one drop of AcOH. Reaction mixture was
then stirred for 40 min at room temperature after which 1.70 g (8.0
mmol) of NaBH(OAc).sub.3 was introduced. Reaction mixture was
stirred overnight at room temperature, neutralized with saturated
aqueous NaHCO.sub.3, diluted with water and extracted with
CH.sub.2Cl.sub.2. Concentration and flash chromatography (0-4%
saturated NH.sub.3 in MeOH/CH.sub.2Cl.sub.2) provided 1.41 g (3.6
mmol; 90%) of 73 as a white solid.
Step 4
##STR00092##
[0381] To a solution of 534 mg (1.47 mmol) of ester 73 in 4 mL of a
3:1:1 mixture of THF-water-methanol was added 60 mg (2.50 mmol) of
LiOH. Reaction mixture was stirred overnight at room temperature,
concentrated to dryness and exposed to high vacuum to obtain 540 mg
of crude acid 74 as a white solid which was used without
purification.
EXAMPLE 15
##STR00093##
[0383] In a manner similar to that described in Example 6, steps 5,
6, and 7, 70 was converted to 75.
EXAMPLE 16
##STR00094##
[0385] In a manner similar to that described in Example 6, steps 5,
6, and 7, 74 was converted to 76.
EXAMPLE 17
Step 1
##STR00095##
[0387] To a solution of 77 (0.73 g, 3.82 mmol) in CH.sub.2Cl.sub.2
(10 mL) was added (COCl).sub.2 (0.41 mL, 4.58 mmol) followed by DMF
(0.1 mL) and the reaction was maintained at 40.degree. C. for 3 h.
The reaction was then concentrated to give a brown solid which was
dissolved in CH.sub.2Cl.sub.2 (10 mL). N,O-dimethylhydroxylamine
hydrochloride (0.56 g, 5.73 mmol) and DIPEA (1.33 mL) were added
and the reaction was stirred at room temperature overnight. The
reaction was quenched by the addition of saturated aqueous
NaHCO.sub.3 and extracted with EtOAc. The combined organic layers
were dried and concentrated, and the residue purified by
chromatography to give 78 (3.2 g, 84%).
Step 2
##STR00096##
[0389] In a manner similar to that described in Example 5, steps 1
and 4, 78 (0.57 g, 2.41 mmol) was converted to 79 (0.59 g).
Step 3
##STR00097##
[0391] In a manner similar to that described in Example 6, steps 5,
6 and 7, 79 (0.38 g, 1.49 mmol) was converted to 80 (0.24 g).
EXAMPLE 18
Step 1
##STR00098##
[0393] In a manner similar to that described in Example 6, step 7,
81 (0.36 g, 0.53 mmol; synthesized in the same manner as compound
30) was converted to 82 (0.34 g, 63%).
Step 2
##STR00099##
[0395] To a solution of 82 (0.115 g, 0.25 mmol) in DMF (4 mL) was
added NaH (60% dispersion in mineral oil, 0.03 g, 0.76 mmol). After
5 h at room temperature, CF.sub.3CH.sub.2OSO.sub.2CF.sub.3 (0.069
g, 0.3 mmol) was added and the reaction stirred at room temperature
overnight. The reaction was diluted with EtOAc and extracted 3
times with water to remove the DMF. The organic layer was dried and
concentrated to give a residue which was purified by chromatography
(10% MeOH/NH.sub.3 in EtOAc) to give 83 (0.08 g, 30%).
EXAMPLE 19
Step 1
##STR00100##
[0397] To a solution of 17 (0.21 mole, 100 ml THF, -10.degree. C.)
was added 84 (0.14 mole) over 5 min and the reaction mixture became
very viscous. Additional THF (100 ml) was added and the yellow
suspension was warmed from -10.degree. C. to 10.degree. C. over
about 2.5 hr. The reaction was quenched by the addition of 100 ml
saturated NH.sub.4Cl and 100 ml H.sub.2O. Extracted once with EtOAc
(300 ml) and eight times with CH.sub.2Cl.sub.2 (150 ml). Dried over
solid MgSO.sub.4 and filtered. Concentrated and flashed over silica
gel chromatography (3 to 10% MeOH (NH.sub.3)/CH.sub.2Cl.sub.2) to
obtain 85 (11 g, yield: 38%).
Step 2
##STR00101##
[0399] To the mixture of 85 (9.2 g) and MnO.sub.2 (42 g) was added
200 ml CH.sub.2Cl.sub.2, and is the mixture was stirred at room
temperature overnight. Additional MnO.sub.2 (20 g) was added and
the reaction was stirred another 24 hrs. The MnO.sub.2 was filtered
off and the reaction was concentrated and flashed over silica gel
(5% and 10% MeOH (NH.sub.3)/CH.sub.2Cl.sub.2) to give 86 (3.1 g,
yield: 33%).
Step 3
##STR00102##
[0401] In a manner similar to that described in Example 7 , step 2,
86 (3.1 g) was converted to 87 (2.0 g, yield: 68%).
Step 4
##STR00103##
[0403] In a manner similar to that described in Example 7, step 3,
4, 5, and 6, 87 was converted to 88.
EXAMPLE 20
Step 1
##STR00104##
[0405] To the solution of compound 89 in CH.sub.2Cl.sub.2 (20 ml)
at 0.degree. C. was added m-CPBA (0.54 g) and the reaction was
stirred at 0.degree. C. for 25 min. and then at room temperature
stirred for 2 hrs. 40% NH.sub.4OH (12 ml) was added and the mixture
was stirred for 30 min. Separated and extracted the aqueous layer
with CH.sub.2Cl.sub.2 (10 ml). Dried (MgSO.sub.4), filtered and
concentrated in vacuo. Flash chromatography (5%
MeOH(NH.sub.3)/CH.sub.2Cl.sub.2) gave 90 (0.67 g, 80%).
Step 2
##STR00105##
[0407] To the solution of 90 (0.65 g) in CH.sub.2Cl.sub.2 (6 ml) at
-10.degree. C. was added TFA (6 ml) and the reaction was stirred
for 1 hr from -10.degree. C. to 0.degree. C. Concentrated down and
azeotroped twice with toluene (20 ml), and concentrated to dryness
to obtain 91 as a gummy oil which was used as is.
Step 3
##STR00106##
[0409] In a manner similar to that described in Example 7, steps 5
and 6, 91 was converted to 92.
EXAMPLE 21
Step 1
##STR00107##
[0411] To a solution of 93 (5.17 g, 22.7 mmol) in THF (100 mL) at
-50.degree. C. was added s-BuLi (38.4 mL of a 1.3M solution in
hexane, 49.9 mmol) dropwise. After 1.5 h at -40.degree. C., the
reaction was recooled to -50.degree. C. and 95 (4.84 g, 22.7 mmol)
in THF (20 mL) was added. After 2.75 h at -50.degree. C., glacial
acetic acid was added followed by saturated aqueous NH.sub.4Cl. The
mixture was warmed to room temperature and the layers were
separated. The aqueous layer was extracted with EtOAc. The combined
organic layers were dried (MgSO.sub.4) filtered and concentrated to
give a residue that was purified by flash column chromatography (1%
to 3% MeOH/NH.sub.3 in CH.sub.2Cl.sub.2) to give 95 (6.35 g,
63%).
Step 2
##STR00108##
[0413] In a manner similar to that described in Example 12, step 3,
95 (5.34 g, 12.11 mmol) was converted to 96 (4.71 g, 75%).
Step 3
##STR00109##
[0415] In a manner similar to that described in Example 6, step 4,
96 (3.7 g, 8.43 mmol) was converted to 97 (3.08 g, >100%) which
was used as is in the next step.
Step 4
##STR00110##
[0417] Compound 97 (0.7 g, 2.25 mmol), H.sub.2NOCH.sub.3.HCl (0.94
g, 11.23 mmol) and NaOAc (1.47 g, 17.97 mmol) were combined in
1-pentanol (20 mL) and water (2 mL) is and heated to reflux for 2
days. The reaction was cooled to room temperature and 0.5 N NaOH
was added. The EtOH was removed in vacuo, additional water (15 mL)
was added, and the reaction extracted with 10% EtOH in
CH.sub.2Cl.sub.2 (180 mL total volume). The combined organic
extracts were dried and concentrated to give 98 (0.55 g, 92%).
Step 5
##STR00111##
[0419] In a manner similar to that described in Example 6, steps 5,
6, and 7, 98 was converted to 99.
EXAMPLE 22
Step 1
##STR00112##
[0421] A solution of 2.2 g (9.5 mmol) of 100 in 75 mL of glacial
acetic acid was hydrogenated in the presence of 0.5 g of 10% w/w
platinum-on-charcoal for 5 h. The reaction mixture was filtered to
remove the catalyst and the filtrate was concentrated by
evaporation under reduced pressure to produce a solid residue which
was basified with 0.5N NaOH and extracted with methylene chloride
(CH.sub.2Cl.sub.2). Methylene chloride extracts were dried over
anhydrous MgSO.sub.4 and concentrated. The residue was purified by
flash chromatography eluted with 10-30% of 7N NH.sub.3-MeOH in
CH.sub.2Cl.sub.2 to give 0.82 g of 101 (mp 158-163 0 C). LCMS m/z
240 (MH+).
Step 2
##STR00113##
[0423] A mixture of 0.12 g (0.52 mmol) of 101, 0.2 g (0.52 mmol) of
5A, 0.67 g (0.5 mmol) of 1-hydroxybenzotriazole hydrate (HOBt), and
0.11 g (0.57 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide
hydrochloride (DEC) in 7 mL of anhydrous dimethylformamide (DMF)
was stirred at ambient temperature for 18 h. The mixture was
diluted with water and the resulting precipitate was filtered to
produce 0.26 g of 102 as a white solid (mp 110-115.degree. C.).
LCMS m/z 557 (MH+).
Step 3
##STR00114##
[0425] To a stirred solution of 0.34 g (2.7 mmol) of oxalyl
chloride in 3 mL of anhyrous CH.sub.2Cl.sub.2 at -70.degree. C. was
added 0.44 g (5.7 mmol) of anhyrous methylsulfoxide in 2 mL of
CH.sub.2Cl.sub.2. After being stirred at -70.degree. C. for 10
minutes, the reaction mixture was added 1.2 g (2.15 mmol) of 102 in
10 mL of CH.sub.2Cl.sub.2. The stirred mixture was kept at
-70.degree. C. for 0.5 h, mixed with 1.8 mL (13 mmol) of
triethylamine, and then allowed to warm up to ambient temperature
by itself. The mixture was diluted with water and extracted with
CH.sub.2Cl.sub.2. Organic extracts were washed with brine, dried
over anhydrous MgSO.sub.4 and concentrated to produce 1.18 g of 103
as a glass. LCMS m/z 555 (MH+).
Step 4
##STR00115##
[0427] A solution of 0.8 g (1.44 mmol) of 103 and 0.6 g (7.2 mmol)
of methoxylamine hydrochloride in 40 mL of ethanol and 40 mL of
pyridine was heated under reflux for 18 h. The mixture was
concentrated and the residue was taken up in ethyl acetate/ether
and washed with water. The organic solution was dried over
anhydrous MgSO.sub.4 and concentrated to 0.65 g of viscous residue
which was dissolved in 8 mL of trifluoroacetic acid and 8 mL of
CH.sub.2Cl.sub.2 and stirred at ambient temperature for 18 h. The
solution was concentrated and the residue was basified with 1N
NaHCO.sub.3 and extracted with ethyl acetate. Organic extracts were
washed with brine, dried over anhydrous MgSO.sub.4 and concentrated
to a gummy residue. Purification of this residue by flash
chromatography with 5-8% of 7N NH.sub.3-MeOH in CH.sub.2Cl.sub.2
produced 0.151 g of 104 as a gum, LCMS m/z 484 (MH+) and 0.146 g of
105 as a glass, LCMS m/z 556 (mH+).
[0428] Mixing a solution of 0.056 g of the free base of 104 in
ethyl acetate with a solution of 0.04 g of maleic acid in ethyl
acetate produced a precipitate which was isolated by filtration to
give 0.06 g of a dimaleate salt of 104 (mp 155-160 0C).
EXAMPLE 23
Step 1
##STR00116##
[0430] 2.4 g (10. mmol) of 106 were reduced in the similar manner
as that described in Example 22, step 1 to give 1.5 g of 107 as a
semi-solid. LCMS m/z 240 (MH+).
Step 2
##STR00117##
[0432] 1.5 g (6.31 mmol) of 107 were coupled with 3 in the similar
manner as that described in Example 22, step 2 to give 3 g of 108
as a solid (mp 104-106.degree. C.). LCMS m/z 557 (MH+).
Step 3
##STR00118##
[0434] 1.17 g (2.1 mmol) of 108 were oxidized in the similar manner
as that described in Example 22, step 3 to give 0.7 g of 109 as a
glass. LCMS m/z 557 (MH+).
Step 4
##STR00119##
[0436] 0.32 g (0.58 mmol) of 109 were reacted with 0.6 g (7.2 mmol)
of methoxylamine hydrochloride in the same manner as that described
in Example 22, step 4 to provide 0.065 g of 110 as a gum, LCMS m/z
484 (MH+) and 0.12 g of 111 as a glass, LCMS m/z 556 (MH+).
EXAMPLE 24
Step 1
##STR00120##
[0438] A mixture of 18 g (74 mmol) of 112, 7.2 g (74 mmol) of
N,O-dimethylhyroxylamine hydrochloride, 19.4 g (15 mmol) of
N,N-diisopropylethylamine, 1.1 g (8 mmol) of HOBt and 14.2 g (74
mmol) of DEC in 80 mL of anhydrous DMF was stirred at ambient
temperature for 18 h. The mixture was diluted with water and
extracted with ethyl acetate. Organic extracts were washed with 1%
NaHCO.sub.3 and brine, dried over anhydrous MgSO.sub.4 and
concentrated to give 15.5 g of 113 as an oil. LCMS m/z 287
(MH+).
Step 2
##STR00121##
[0440] To a stirred solution of 2.9 g (18 mmol) of 2-bromopyridine
in 30 mL of anhydrous THF at -78.degree. C. was added 7.5 mL of
2.5M solution of n-BuLi in hexane dropwise for 0.5 h. After being
stirred at -78.degree. C. for 1 h, the reaction mixture was added a
solution of 5.1 g (17.8 mmol) of 113 in 15 mL of THF. The mixture
was allowed to stir at ambient temperature for 48 h, mixed with
saturated aqueous NH.sub.4Cl and extracted with ether. Organic
extracts were washed with brine, dried over anhydrous MgSO.sub.4
and concentrated to produce 5.7 g of 114 as an oil. LCMS m/z 305
(MH+).
Step 3
##STR00122##
[0442] A solution of 3.15 g (10.4 mmol) of 114 and 3.47 g (41.6
mmol) of methoxylamine hydrochloride in 30 mL of ethanol and 30 mL
of pyridine was heated under reflux for 18 h. The mixture was
concentrated and the residue was taken up in ether and washed with
water. The organic solution was dried over anhydrous MgSO.sub.4 and
concentrated to give 2.5 g of 115 as an oil. LCMS m/z 334
(MH+).
Step 4
##STR00123##
[0444] A solution of 2.4 g (7.2 mmol) of 22 in 20 mL of
CH.sub.2Cl.sub.2 and 20 mL of trifluoroacetic acid was stirred at
ambient temperature for 1 h. The solution was concentrated. The
residue was basified with saturated aqueous NaHCO.sub.3 and
extracted with CH.sub.2Cl.sub.2. Organic extracts were washed with
brine, dried over anhydrous MgSO.sub.4 and concentrated to give
1.41 g of 23 as a glass. LCMS m/z 234 (MH+).
Step 5
##STR00124##
[0446] A mixture of 0.466 g (2 mmol) of 116, 0.517 g (2.2 mmol) of
5A, 0.276 g (2 mmol) of HOBt and 0.46 g (2.4 mmol) of DEC in 20 mL
of anhydrous DMF was stirred at ambient temperature for 18 h. The
mixture was concentrated by evaporation under reduced pressure at
bath temperature of 25-45.degree. C. and the residue was
chromatographed with 4% (7N NH.sub.3/CH.sub.3OH) in
CH.sub.2Cl.sub.2 to produce 0.48 g of syrup which was dissolved in
15 mL of EtAc-EtOH (3:1 v) and mixed with a solution of 0.26 g of
maleic acid in 10 mL of EtAc-EtOH (1:1). The resuting precipitate
was filtered to produce 0.35 g of the maleate salt of 117 (mp
160-163 0 C). LCMS m/z 451 (MH+).
EXAMPLE 25
Step 1
##STR00125##
[0448] To a stirred solution of 4.16 g (20 mmol) of 1A in 80 mL of
anhydrous THF at -78.degree. C. was added dropwise 17 mL of 2.5M
solution of n-BuLi in hexane for 25 minutes. After being stirred
from -78.degree. C. to room temperature for 1 h, the reaction
mixture was added a solution of 6 g (22 mmol) of 26 in 100 mL of
anhydrous THF and kept at room temperature for 18 h. The mixture
was mixed with saturated aqueous NH.sub.4Cl and extracted with
EtAc. Organic extracts were washed with brine, dried over anhydrous
MgSO.sub.4 and concentrated to produce 6.1 g of 118 (mp
146-149.degree. C.). LCMS m/z 420 (MH+).
Step 2
##STR00126##
[0450] A solution of 3.71 g (8.8 mmol) of 118 and 3.7 g (44 mmol)
of methoxylamine hydrochloride in 40 mL of pyridine and 40 mL of
ethanol was heated under reflux for 2 days. The mixture was
concentrated and the residue was taken up in CH.sub.2Cl.sub.2 and
washed with saturated aqueous NaCl. Organic solution was dried over
anhydrous MgSO.sub.4 and concentrated to give 2.6 g of 119 as a
glass. LCMS m/z 421 (MH+).
Step 3
##STR00127##
[0452] A solution of 0.9 g (2.14 mmol) of 119 in 10 mL of
CH.sub.2Cl.sub.2 and 10 mL of trifluoroacetic acid was stirred at
ambient temperature for 2 h. The solution was concentrated. The
residue was taken up in CH.sub.2Cl.sub.2, washed with saturated
NaHCO.sub.3 and brine, dried over anhdrous MgSO.sub.4 and
concentrated to a solid residue which was triturated with
CH.sub.3CN and filtered to produce 0.29 g of 120 (mp
200-205.degree. C.). LCMS m/z 321 (MH+).
Step 4
##STR00128##
[0454] 0.1 g (0.31 mmol) of 120 and 0.83 g (0.35) of 5A were
coupled in the same manner as that described in Example 24, step 5
to produce 0.12 g of the maleate salt of 121 (mp 170-173.degree.
C.). LCMS m/z 538 (MH+).
EXAMPLE 26
Step 1
##STR00129##
[0456] In a similar manner to that described in Example 6, step 7,
122 (0.26 g, 0.41 mmol) was converted to 123 (0.08 g, 40%).
EXAMPLE 27
Step 1
##STR00130##
[0458] To a suspension of LAH (0.83 g, 22 mmol) in ether (20 mL) at
0.degree. C. was added 124 (3.2 g, 17.5 mmol) in THF (15 mL)
dropwise. The reaction was stirred at 0.degree. C. for 1.5 h, and
quenched by the addition of water (0.8 mL), 20% aqueous NaOH (0.8
mL), and water (2.4 mL). The mixture was stirred for 15 min and
filtered and the filter cake washed with CH.sub.2CL.sub.2. The
filtrate was concentrated to give an oil which was dissolved in
ether (30 mL) and washed with brine and dried (MgSO.sub.4).
Filtration and concentration in vacuo gave 125 (2.5 g) which was
used without further purification.
Step 2
##STR00131##
[0459] Step 3
##STR00132##
[0461] In a similar manner to that described in Example 22, step 3
and Example 1, steps 4, 5, and 6, 125 was converted to 126.
Step 4
##STR00133##
[0463] In a similar manner to that described in Example 6, step 5,
126 was converted to 127.
Step 5
##STR00134##
[0465] In a similar manner to that described in Example 6, step 7,
127 was converted to 128.
[0466] The compounds in Table 1 (first column) are prepared from
the compounds in the last column of Table 1 by following
essentially the same procedures as in the examples described above.
In Table 1 "Cmpd. No." stands for "Compound Number".
TABLE-US-00002 TABLE 1 Mass Spec. Cmpd No.1 STRUCTURE
[M.sup.+H].sup.+ Starting Material 200 ##STR00135## 470.1
##STR00136## 201 ##STR00137## 456.1 ##STR00138## 202 ##STR00139##
456.1 ##STR00140## 203 ##STR00141## 531.1 ##STR00142## 204
##STR00143## 499.1 ##STR00144## 205 ##STR00145## 497.1 ##STR00146##
206 ##STR00147## 517.1 ##STR00148## 207 ##STR00149## 549.1
##STR00150## 208 ##STR00151## 599.1 ##STR00152## 209 ##STR00153##
568.1 ##STR00154## 210 ##STR00155## 565.1 ##STR00156## 211
##STR00157## 483 ##STR00158## 212 ##STR00159## 484.1 ##STR00160##
213 ##STR00161## 583.1 ##STR00162## 214 ##STR00163## 552.1
##STR00164## 215 ##STR00165## 471 ##STR00166## 216 ##STR00167## 512
##STR00168## 217 ##STR00169## 512 ##STR00170## 218 ##STR00171## 504
##STR00172## 219 ##STR00173## 454 ##STR00174## 220 ##STR00175## 470
##STR00176## 221 ##STR00177## 456 ##STR00178## 222 ##STR00179## 456
##STR00180## 223 ##STR00181## 495 ##STR00182## 224 ##STR00183## 470
##STR00184## 225 ##STR00185## 470 ##STR00186## 226 ##STR00187## 504
##STR00188## 227 ##STR00189## 484 ##STR00190## 228 ##STR00191## 472
##STR00192## 229 ##STR00193## 486 ##STR00194## 230 ##STR00195## 572
##STR00196## 231 ##STR00197## 505 ##STR00198## 232 ##STR00199## 452
##STR00200## 233 ##STR00201## 518 ##STR00202## 234 ##STR00203## 450
##STR00204## 235 ##STR00205## 442 ##STR00206## 236 ##STR00207## 423
##STR00208## 237 ##STR00209## 423 ##STR00210## 238 ##STR00211## 436
##STR00212## 239 ##STR00213## 451 ##STR00214## 240 ##STR00215## 423
##STR00216## 241 ##STR00217## 423 ##STR00218## 244 ##STR00219## 435
##STR00220## 245 ##STR00221## 519 ##STR00222## 246 ##STR00223## 451
##STR00224## 247 ##STR00225## 421 ##STR00226## 248 ##STR00227## 438
##STR00228## 249 ##STR00229## 452 ##STR00230## 250 ##STR00231## 487
##STR00232## 251 ##STR00233## 543 ##STR00234## 252 ##STR00235## 501
##STR00236## 253 ##STR00237## 457 ##STR00238## 254 ##STR00239## 471
##STR00240## 255 ##STR00241## 465 ##STR00242## 256 ##STR00243## 465
##STR00244## 257 ##STR00245## 422 ##STR00246## 258 ##STR00247## 406
##STR00248## 259 ##STR00249## 455 ##STR00250## 260 ##STR00251## 484
##STR00252## 261 ##STR00253## 443 ##STR00254## 262 ##STR00255## 440
##STR00256## 263 ##STR00257## 441 ##STR00258## 264 ##STR00259## 427
##STR00260## 265 ##STR00261## 427 ##STR00262## 266 ##STR00263## 518
##STR00264## 267 ##STR00265## 490 ##STR00266## 268 ##STR00267## 455
##STR00268## 269 ##STR00269## 439 ##STR00270## 270 ##STR00271## 407
##STR00272## 271 ##STR00273## 421 ##STR00274## 272 ##STR00275## 407
##STR00276## 273 ##STR00277## 455 ##STR00278## 275 ##STR00279## 425
##STR00280## 278 ##STR00281## 425 ##STR00282## 279 ##STR00283## 439
##STR00284## 280 ##STR00285## 470 ##STR00286## 281 ##STR00287## 469
##STR00288## 282 ##STR00289## 504 ##STR00290##
[0467] The isomers 246A and 253A, below, can be separated from 246
and 253, respectively, above, by techniques well known to those
skilled in the art.
##STR00291##
EXAMPLE 28
Step 1
##STR00292##
[0469] To a solution of 1.00 g (8.13 mmol) of pyrimidine aldehyde
67 (Step 2 of Example 13) in 40 ml of CH.sub.2Cl.sub.2 was added
1.36 mL (10.58 mmol) of ethyl isonipecotate and 2 drops of acetic
acid. The mixture was stirred for 40 min. at room temperature,
after which 2.58 g (12.17 mmol) of NaBH(OAc).sub.3 was added. The
reaction mixture was then stirred for 20 h at room temperature,
diluted with aqueous NaOH (pH adjusted to 11) and extracted with
CH.sub.2Cl.sub.2. Organic phase was dried and concentrated, and the
residue was flash chromatographed (4-8% ca. 3 N NH.sub.3 in
MeOH/CH.sub.2Cl.sub.2) to produce 1.55 g (5.87 mmol; 72%) of amine
285 as a yellowish solid.
Step 2
##STR00293##
[0471] To a solution of 3.83 g (14.51 mmol) of ester 285 in 60 ml
of 3:1:1 mixture of THF-MeOH--H.sub.2O was added 1.22 g (29.02
mmol) of LiOH monohydrate. The reaction mixture was stirred at room
temperature overnight, concentrated, and the residue was dried
under high vacuum to produce 3.84 g of crude acid 286 lithium salt
as a yellow solid. Material could be used directly or could be
purified by passing through a silica gel plug eluting with ca. 3 N
NH.sub.3 in MeOH.
Step 3
##STR00294##
[0473] To a mixture of 3.32 g (14.05 mmol) of acid 286 and 4.07 g
(14.05 mmol) of 4-[(E)-(methoxyimino)-2-pyridinylmethyl]piperidine
dihydrochloride (see Compound 447 below) in 40 mL of DMF was added
8.94 mL (70.25 mmol) of 4-ethylmorpholine and 14.0 mL (23.52 mmol)
of 50 wt. % solution of 1-propanephosphonic acid cyclic anhydride
in ethyl acetate. The reaction mixture was stirred for 4.5 h at
50.degree. C. followed by 14 h at room temperature. Concentration
of the mixture was followed by exposure to high vacuum for 24 h to
remove remaining DMF. The residue was partitioned between aqueous
NaOH and CH.sub.2Cl.sub.2, organic phase was separated, dried and
concentrated, and the residue was flash chromatographed (5-15% ca.
3 N NH.sub.3 in MeOH/CH.sub.2Cl.sub.2) to produce 4.60 g (10.51
mmol; 75%) of amide 287 as a light tan foam. MS 438 (M+1).
EXAMPLE 29
Step 1
[0474] Reference: J. Heterocyclic Chem., 1966, 3, 252.
##STR00295##
[0475] 3,4 Pyridine-dicarboximide 288 (10.0 g; 67.5 mmoles) was
dissolved in 162 g. of 10% aqueous NaOH and the solution was cooled
to an internal temperature of 7.degree. C. in an ice-salt bath.
Bromine (3.6 ml; 70 mmoles) was added dropwise. After the addition,
the solution was heated for 45 minutes at a bath temperature of
80-85.degree. C. The yellow solution was then cooled to an internal
temperature of 37.degree. C., then 17 ml of glacial acetic acid
were added dropwise to a pH of 5.5. The resulting mixture was saved
overnight in a refrigerator. The solid formed was filtered and
washed with 5 ml of water and 5 ml of methanol. The reaction
yielded 6.35 g. of product 289 melting at 280-285.degree. C.
(decomp.).
Step 2
##STR00296##
[0477] Solid Compound 289 (9.5 gr.; 69 mmoles) was carefully added
in three aliquots to a slurry of lithium aluminum hydride (9.5 gr.;
250 mmoles) in 200 ml of dry tetrahydrofuran. The resulting hot
mixture was stirred at room temperature for two days. After cooling
in an ice bath, the reaction was quenched with very careful
sequential dropwise addition of 10 ml of water, followed by 10 ml
of 15% aqueous NaOH, then by 30 ml of water. The resulting solid
was filtered through a pad of Celite and washed several times with
THF. The oil obtained after evaporation of the solvent, solidified
on standing. The reaction mixture was purified by flash
chromatography on silica gel using 5% MeOH(NH.sub.3)/EtOAc as
eluent yielding 6.21 (72%) of Compound 290. LC-MS: m/z=125
(M+1).
Step 3
##STR00297##
[0479] Manganese dioxide (29 gr.; 334 mmoles) was added, in one
portion, at room temperature, to a suspension of
3-amino-4-hydroxymethylpyridine 290 (5.0 gr.; 40.3 mmoles) in 500
ml of chloroform with good stirring. After two days, the solid is
filtered through a pad of Celite and washed with chloroform.
Removal of the solvent using reduced pressure yielded 4.2 grams
(85%) of Compound 291 as a yellow solid.
Step 4
##STR00298##
[0481] A dry dichloromethane (400 ml) solution of ethyl
isonipecotate (12.5 gr.; 79.5 mmoles) and 3-amino pyridine
4-carboxyaldehyde 291 (3.33 gr.; 27.3 mmoles) was stirred at room
temperature for one hour, then 60 grams of activated 3 .ANG.
molecular sieves were added. The mixture was stirred for an
additional 90 minutes, then 20 grams (96.4 mmoles) of sodium
triacetoxy borohydride was added at room temperature in one
portion. After stirring for three days, the solid was filtered
through a pad of Celite and washed with dichloromethane. The
solution was stirred for 15 minutes with 100 ml of saturated
aqueous sodium bicarbonate then separated from the aqueous layer.
The organic layer was washed two more times with saturated aqueous
sodium bicarbonate, then with brine and dried with anhydrous sodium
sulfate. After evaporation of the solvent, the resulting oil was
purified by flash chromatography on silica gel using
EtOAc:Hexanes:MeOH(NH.sub.3) as eluent. The procedure yielded 6.8
gr.(94%) of Compound 292. FAB-MS: m/z=264 (M+1).
Step 5
##STR00299##
[0483] Ethyl
1-[(3-amino-4-pyridinyl)methyl]-4-piperidinecarboxylate 292 (4.75
gr.; 18.04 mmoles) was stirred for 24 hours at room temperature
with 1.51 gr. (36 mmoles) of lithium hydroxide monohydrate in 75 ml
of methanol. Removal of the solvent using reduced pressure yielded
Compound 293 as a white solid.
Step 6
##STR00300##
[0485] 4-(2-pyridinylcarbonyl)piperidine 28 (Step 4 in Example 6)
(0.3 gr.; 1.58 mmoles), lithium
1-[(3-amino-4-pyridinyl)methyl]-4-piperidinecarboxylate 293 (0.34
gr.; 1.4 mmoles), DEC (0.38 gr.; 2.0 mmoles), and HOBT (0.27 gr.;
2.0 mmoles) were stirred at room temperature in 10 ml of dry DMF
for two days. The reaction was quenched with 50 ml. of 0.5 N
aqueous NaOH, then the solution was extracted with dichloromethane.
The combined extracts were washed with brine and dried over
anhydrous sodium sulfate. The product 295 was isolated by flash
chromatography on silica gel using EtOAc:Hexanes:MeOH(NH.sub.3)
(50:45:5) as eluent. Yields: 0.27 gr. (47%). FAB-MS: m/z=408
(M+1).
Step 7
##STR00301##
[0487]
1-[[[1-[(3-amino-4-pyridinyl)methyl]-4-piperidinyl]carbonyl]-4-(2-p-
yridinylcarbonyl)piperidine 295 (0.196 gr.; 0.48) and methoxyamine
hydrochloride (0.401 gr. 4.8; mmoles) were heated, under N.sub.2
,at a bath temperature of 70.degree. C. for 24 hours in 6.0 ml of
dry pyridine. After removing the pyridine using reduced pressure,
the residue was treated with saturated aqueous sodium bicarbonate.
The resulting mixture was extracted several times with
dichloromethane. The combined extracts were washed with brine and
dried over anhydrous sodium sulfate. The reaction mixture was
purified by silica gel preparative thin layer chromatography. The
plates were eluted with EtOAc:Hexanes:MeOH(NH.sub.3) (60:35:5) and
the product 296 was extracted with 10% MeOH(NH.sub.3)/EtOAc.
Yields: 0.15 gr. (71%). FAB-MS: m/z 437 (M+1).
EXAMPLE 30
Step 1
##STR00302##
[0489] A mixture of 297 (1 g, 10 mmol) in 1:1 water-dioxane (50 mL)
was treated with Et.sub.3N (4 mL, 13 mmol) and BOC.sub.2O (2.8 g,
13 mmol) at 4.degree. C. and allowed to warm to 20.degree. C. for
one day. The solvent was then removed in vacuo. The residue was
taken up in 1:1 water-ethyl acetate and the organic layer was
discarded. The aqueous layer was acidified with 1 N aqueous HCl and
extracted three times with ethyl acetate. The combined organic
phases were washed with water and brine, dried (Na.sub.2SO.sub.4),
and concentrated to give 298 as a white solid (1.8 g, 90%).
Step 2
##STR00303##
[0491] A mixture of 298 (1.8 g, 9 mmol), N,O-dimethylhydroxylamine
hydrochloride (2.6 g, 27 mmol), EDCl (5 g, 27 mmol), HOBt (0.1 g, 1
mmol), and DIPEA (12.5 mL, 72 mmol) in DMF (30 mL) was stirred at
20.degree. C. overnight. The reaction was then concentrated to half
volume in vacuo, poured onto water, and extracted three times with
ethyl acetate. The combined organic phases were washed with
saturated aqueous NH.sub.4Cl, saturated aqueous NaHCO.sub.3, water
and brine, dried (Na.sub.2SO.sub.4), and concentrated to give 299
as a clear oil (2.1 g, 98%).
Step 3
##STR00304##
[0493] To a solution of 2-bromopyridine (1.2 mL, 12 mmol) in THF
(60 mL) at -78.degree. C. was added n-BuLi (8 mL of a 1.6 M
solution in hexanes, 12 mmol) dropwise over 15 min. After stirring
for an additional 30 min at -78.degree. C., a solution of 299 (1 g,
4 mmol) in THF (20 mL) was slowly added. The reaction was then
heated to 60.degree. C. for 1 h. After cooling to 20.degree. C.,
the reaction was diluted with ether, quenched with saturated
aqueous Na.sub.2SO.sub.4, and dried with solid Na.sub.2SO.sub.4.
The mixture was filtered through a plug of solid Na.sub.2SO.sub.4
and concentrated in vacuo. Flash column chromatography (0-20% ethyl
acetate-hexanes) yielded 300 as a yellow oil (0.12 g, 11%).
Step 4
##STR00305##
[0495] Following procedures similar to those of Steps 4 to 7 of
Example 6, compound 301 was obtained. MS 409 (M+1).
[0496] Following procedures similar to those described in the
examples above, the compounds in Table 2 were prepared.
TABLE-US-00003 TABLE 2 Compound STRUCTURE MS (M + 1) 302
##STR00306## 430 303 ##STR00307## 421 304 ##STR00308## 505 305
##STR00309## 505 306 ##STR00310## 471 307 ##STR00311## 426 308
##STR00312## 408 309 ##STR00313## 442 310 ##STR00314## 437 311
##STR00315## 437 312 ##STR00316## 458 313 ##STR00317## 402 314
##STR00318## 487 315 ##STR00319## 438 316 ##STR00320## 467 317
##STR00321## 424 318 ##STR00322## 451 319 ##STR00323## 430 320
##STR00324## 523 321 ##STR00325## 453 322 ##STR00326## 453 323
##STR00327## 410 324 ##STR00328## 413 325 ##STR00329## 439 326
##STR00330## 466 327 ##STR00331## 453 328 ##STR00332## 453 329
##STR00333## 424 330 ##STR00334## 453 331 ##STR00335## 438 332
##STR00336## 488 333 ##STR00337## 437 334 ##STR00338## 437 335
##STR00339## 479 336 ##STR00340## 452 337 ##STR00341## 466 338
##STR00342## 438 339 ##STR00343## 465 340 ##STR00344## 465 341
##STR00345## 513 342 ##STR00346## 452 343 ##STR00347## 550 344
##STR00348## 499 345 ##STR00349## 451 346 ##STR00350## 451 347
##STR00351## 451 348 ##STR00352## 451 349 ##STR00353## 452 350
##STR00354## 455 351 ##STR00355## 455 352 ##STR00356## 422 353
##STR00357## 422 354 ##STR00358## 492 355 ##STR00359## 438 356
##STR00360## 437 357 ##STR00361## 424 358 ##STR00362## 510 359
##STR00363## 539 360 ##STR00364## 453 361 ##STR00365## 409 362
##STR00366## 438 363 ##STR00367## 426 364 ##STR00368## 422 365
##STR00369## 483 366 ##STR00370## 483 367 ##STR00371## 497 368
##STR00372## 465 369 ##STR00373## 479 370 ##STR00374## 479 371
##STR00375## 493 372 ##STR00376## 564 373 ##STR00377## 517 374
##STR00378## 568 375 ##STR00379## 426 376 ##STR00380## 455 377
##STR00381## 456 378 ##STR00382## 452 379 ##STR00383## 427
[0497] If one were to follow procedures similar to those described
in the examples above, the compounds in the "Structure" column of
Table 3 would be obtained using the starting material listed in
Table 3. Each compound in Table 3 is a mixture of oxime isomers, as
represented by the bond between the oxime nitrogen and the OH or
OCH.sub.3 moiety. In Table 3 "CMPD" stands for "Compound".
TABLE-US-00004 TABLE 3 CMPD Structure Starting Material 380
##STR00384## ##STR00385## 381 ##STR00386## ##STR00387## 382
##STR00388## ##STR00389## 383 ##STR00390## ##STR00391## 384
##STR00392## ##STR00393## 385 ##STR00394## ##STR00395## 386
##STR00396## ##STR00397## 387 ##STR00398## ##STR00399## 388
##STR00400## ##STR00401## 389 ##STR00402## ##STR00403## 390
##STR00404## ##STR00405## 391 ##STR00406## ##STR00407## 392
##STR00408## ##STR00409## 393 ##STR00410## ##STR00411## 394
##STR00412## ##STR00413## 395 ##STR00414## ##STR00415## 396
##STR00416## ##STR00417## 397 ##STR00418## ##STR00419## 398
##STR00420## ##STR00421## 399 ##STR00422## ##STR00423## 400
##STR00424## ##STR00425## 401 ##STR00426## ##STR00427## 402
##STR00428## ##STR00429## 403 ##STR00430## ##STR00431## 404
##STR00432## ##STR00433## 405 ##STR00434## ##STR00435## 406
##STR00436## ##STR00437## 407 ##STR00438## ##STR00439## 408
##STR00440## ##STR00441## 409 ##STR00442## ##STR00443## 410
##STR00444## ##STR00445## 411 ##STR00446## ##STR00447## 412
##STR00448## ##STR00449## 413 ##STR00450## ##STR00451## 414
##STR00452## ##STR00453## 415 ##STR00454## ##STR00455## 416
##STR00456## ##STR00457## 417 ##STR00458## ##STR00459## 418
##STR00460## ##STR00461## 419 ##STR00462## ##STR00463## 420
##STR00464## ##STR00465## 421 ##STR00466## ##STR00467## 422
##STR00468## ##STR00469## 423 ##STR00470## ##STR00471## 424
##STR00472## ##STR00473## 425 ##STR00474## ##STR00475## 426
##STR00476## ##STR00477## 427 ##STR00478## ##STR00479## 428
##STR00480## ##STR00481## 429 ##STR00482## ##STR00483## 430
##STR00484## ##STR00485## 431 ##STR00486## ##STR00487## 432
##STR00488## ##STR00489## 433 ##STR00490## ##STR00491## 434
##STR00492## ##STR00493## 435 ##STR00494## ##STR00495## 436
##STR00496## ##STR00497## 437 ##STR00498## ##STR00499## 438
##STR00500## ##STR00501## 439 ##STR00502## ##STR00503##
EXAMPLE 31
Step 1
##STR00504##
[0499] To a solution of LDA (233 mL, 2.0 M in
THF/heptane/ethylbenzene, 0.466 mol) in THF (300 mL) at 0.degree.
C. was added, dropwise over 1.0 h, a solution of compound 440 (100
g, 0.389 mol) in THF (.about.400 mL). The red-orange solution was
stirred at 0.degree. C. for 30 min, and then transferred by cannula
to a pre-cooled (0.degree. C.) solution of
N-fluorobenzenesulfonimide (153 g, 0.485 mol) in dry THF
(.about.600 mL). The reaction mixture was stirred at 0.degree. C.
for 30 min, and then at rt for 18 h. The total solvent volume was
reduced to approximately one third, and EtOAc (.about.1 L) was
added. The solution was washed successively with water, 0.1 N aq.
HCl, saturated aq. NaHCO.sub.3, and brine. The organic layer was
dried over MgSO.sub.4, filtered, and concentrated under reduced
pressure to yield a crude liquid. Separation by flash
chromatography (6:1 hexanes-EtOAc) gave compound 441 (93.5 g,
87%).
Step 2
##STR00505##
[0501] In a manner similar to that described in Example 6, Step 4,
compound 441 was converted to compound 442.
Step 3
##STR00506##
[0503] In a manner similar to that described in Example 1, Step 4,
compound 442 was converted to compound 443.
Step 4
##STR00507##
[0505] In a manner similar to that described in Example 1, Step 5,
compound 443 was converted to compound 444.
Step 5
##STR00508##
[0507] In a manner similar to that described in Example 6, Step 5,
compound 5 was converted to compound 445.
[0508] Step 6
##STR00509##
[0509] In a manner similar to that described in Example 6, Step 6,
compound 445 was converted to compound 446.
[0510] In the above examples, the compound
4-[(E)-(methoxyimino)-2-pyridinylmethyl]piperidine
dihydrochloride:
##STR00510##
can be used to prepare the compounds of this invention, for
example, see Examples 6 and 28. Preferably, Compound 447 is
prepared from a compound of formula:
##STR00511##
and from a compound of Formula 449:
##STR00512##
[0511] R.sup.50 is an alkyl or aryl group, f is 0 to 4, R.sup.51 is
an alkyl group, and Q is a halo group, wherein said alkyl, aryl,
and halo groups are as defined above.
[0512] Compound 447 can be prepared from 448 and 449 by: [0513] (a)
converting the compound of formula 449 into its Grignard form
(449A):
[0513] ##STR00513## [0514] (b) reacting the compound of formula 448
with the compound of formula 449A to obtain a compound of formula
450:
[0514] ##STR00514## [0515] (c) reacting the compound of formula 450
with a suitable alkyl chloroformate of formula 451
[0515] R.sup.51--OCOCl 451
to yield a compound of formula 452:
##STR00515## [0516] (d) forming the salt (formula 453):
[0516] ##STR00516## [0517] (e) reacting the compound of formula 453
with an alkoxyamine (NH.sub.2OR.sup.51) or its hydrochloride to
form an oxime of formula 454:
[0517] ##STR00517## [0518] (f) isomerizing the compound of formula
454 by treatment with a strong acid and simultaneously converting
to the desired acid salt of Formula 454 with an enriched E isomer,
wherein the E isomer predominates over the Z-isomer by at least a
90:10 ratio. When f=0, R.sup.51 is methyl, and the acid used for
isomerization is HCl in the compound of formula 454, the final
product is the compound of formula 447.
[0519] This preparation can be represented as follows:
##STR00518##
[0520] Following the above process the Compound 447 can be prepared
as follows:
##STR00519##
[0521] The conversion of compound 461 to 447 predominantly yields
the E-isomer of compound 447 in high stereochemical purity and high
yields. Isomerization of a mixture of phenyl compounds by acid
catalysis is discussed by T. Zsuzsanna et al, Hung.Magy.Km.Foly.,
74(3) (1968), 116-119.
[0522] The above process starts with Compound 449. In step 1, a
4-halo-1-alkylpiperidine (or a 4-halo-1-arylpiperidine) is
converted to its Grignard analog (449A) by reacting with magnesium.
The reaction is performed generally at temperatures of about
-10.degree. C. to reflux. Generally a hydrocarbon solvent such as,
for example, toluene, xylene, chlorobenzene, dichlorobenzene and
the like, or mixture of hydrocarbons listed above with an ether,
such as, for example, a C.sub.5-C.sub.12 alkyl ether,
1,2-dimethoxyethane 1.2-diethoxyethane, diglyme, 1,4-dioxane,
tetrahydrofuran and the like are suitable for this reaction. The
solution is cooled to around -10.degree. C. to about 10.degree. C.
and then reacted with a suitable 2-cyanopyridine (448), for about
10-120 minutes. Examples of suitable 2-cyanopyridines are
2-cyanopyridine, 4-methyl-2-cyanopyridine, 4-ethyl-2-cyanopyridine,
4-phenyl-2-cyanopyridine, and the like. Preferred are
2-cyanopyridine and 4-methyl-2-cyanopyridine. The Grignard compound
is used generally in about 1-4 molar equivalents with respect to
the compound of formula 448, preferably in about 1-3 molar
equivalents and typically in about 1.5-2.5 molar equivalents. The
product of formula 450 may be isolated by procedures well known in
the art, such as, for example, treatment with an acid (e.g. HCl),
preferably in a suitable solvent (e.g., tetrahydrofuran or ethyl
acetate).
[0523] The product of Formula 450 may then be reacted with an alkyl
chloroformate in the next step. Suitable alkyl chloroformates are,
for example, methyl chloroformate, ethyl chloroformate, propyl
chloroformate, and the like, with the preferred being methyl
chloroformate or ethyl chloroformate. Generally a hydrocarbon
solvent such as, for example, toluene, xylene, chlorobenzene,
dichlorobenzene and the like, or mixture of a hydrocarbons listed
above with an ether such as, for example, a C.sub.5-C.sub.12 alkyl
ether, 1,2-dimethoxyethane, 1.2-diethoxyethane, diglyme,
1,4-dioxane, tetrahydrofuran and the like is suitable for this
reaction. The reaction is generally performed at about
25-100.degree. C., preferably about 40-90.degree. C. and typically
about 50-80.degree. C., for about 1-5 hours. After the reaction,
generally the generated acid is washed off and the product of
formula 452 may be isolated by organic solvent extraction.
[0524] The compound of Formula 452 may then be converted into its
acid salt by treatment with an acid such as, for example, sulfuric
acid, hydrochloric acid, trifluoroacetic acid and the like,
generally in a solvent at temperatures between ambient and reflux
of the solvent. Suitable solvents include hydrocarbons such as, for
example, toluene, xylene, chlorobenzene, dichlorobenzene and the
like. There being two nitrogen atoms in the compound of Formula
452, the salt generally has 2 moles of acid to a mole of compound
452.
[0525] The compound of formula 453 may then be converted to an
alkyloxime of formula 454 by reacting it with an alkoxyamine (or
its hydrochloride), usually in aqueous solution form. Suitable
alkoxyamines are, for example, methoxyamine, ethoxyamine and the
like. Methoxyamine is preferred. The alkoxyamine (or its
hydrochloride) is employed generally in about 1 to about 4 molar
equivalents, preferably in about 1 to about 3 molar equivalents,
and typically in about 1 to about 2 molar equivalents. Generally,
the reaction is catalyzed by a weak acid such as) for example,
acetic acid, formic acid and the like, or mixtures thereof. A
cosolvent such as, for example, methanol, ethanol, isopropanol,
n-butanol and the like, or mixtures thereof may be added. The
product of formula 454, after work-up, is a mixture of the Z- and
the E-isomers, whose ratio may be analyzed for its stereochemical
make-up, using techniques well known in the art such as, for
example, HPLC.
[0526] Treating the compound of formula 454 with a strong acid
under the reaction conditions described below isomerizes the
mixture of the Z and the E-isomers into predominantly the E-isomer.
Generally, the compound of formula 454 may be dissolved in a
solvent such as, for example, ethanol, methanol, isopropanol,
n-butanol and the like, ether such as methyl tert-butyl ether,
tetrahydrofuran and the like, hydrocarbon such as, for example,
heptane, hexane, toluene and the like, nitrile such as, for
example, acetonitrile, benzonitrile and the like, or mixtures of
such solvents. The dissolved compound is then treated with a strong
acid such as, for example, HCl, HBr, H.sub.2SO.sub.4 and the like,
at temperatures in the range of 20 to 100.degree. C. for about 1-20
hours. The acid is employed generally in about 1 to about 8 molar
equivalents, preferably in about 1 to about 6 molar equivalents,
and typically in about 2 to about 4 molar equivalents. Work-up
typically forms predominantly the acid salt of the E-isomer of the
compound of formula 454, which is in fact the compound of formula
447 when R.sup.51=methyl, n=0 and the acid salt is HCl in 454.
[0527] The products of the various steps in the process described
above may be isolated and purified by conventional techniques such
as, for example, filtration, recrystallization, solvent extraction,
distillation, precipitation, sublimation and the like, as is well
known to those skilled in the art. The products may be analyzed
and/or checked for purity by conventional methods such as, for
example, thin layer chromatography, NMR, HPLC, melting point, mass
spectral analysis, elemental analysis and the like, well known to
those skilled in the art.
H.sub.3-Receptor Binding Assay
[0528] The source of the H.sub.3 receptors in this experiment was
guinea pig brain. The animals weighed 400-600 g. The brain tissue
was homogenized with a solution of 50 mM Tris, pH 7.5. The final
concentration of tissue in the homogenization buffer was 10% w/v.
The homogenates were centrifuged at 1,000.times.g for 10 min. in
order to remove clumps of tissue and debris. The resulting
supernatants were then centrifuged at 50,000.times.g for 20 min. in
order to sediment the membranes, which were next washed three times
in homogenization buffer (50,000.times.g for 20 min. each). The
membranes were frozen and stored at -70.degree. C. until
needed.
[0529] All compounds to be tested were dissolved in DMSO and then
diluted into the binding buffer (50 mM Tris, pH 7.5) such that the
final concentration was 2 .mu.g/ml with 0.1% DMSO. Membranes were
then added (400 .mu.g of protein) to the reaction tubes. The
reaction was started by the addition of 3 nM
[.sup.3H]R-.alpha.-methyl histamine (8.8 Ci/mmol) or 3 nM
[.sup.3H]N.sup..alpha.-methyl histamine (80 Ci/mmol) and continued
under incubation at 30.degree. C. for 30 min. Bound ligand was
separated from unbound ligand by filtration, and the amount of
radioactive ligand bound to the membranes was quantitated by liquid
scintillation spectrometry. All incubations were performed in
duplicate and the standard error was always less than 10%.
Compounds that inhibited more than 70% of the specific binding of
radioactive ligand to the receptor were serially diluted to
determine a K.sub.i (nM).
[0530] Compounds 23, 30, 31, 32, 33, 44, 45, 49, 50, 53, 54, 55,
56, 57A, 59, 75, 76, 83, 88, 92, 99, 104, 110, 117, 128, 200, 201,
203-215, 217-241, 244-246, 246A, 247-253, 253A, 254-273, 275, 278,
280-282, 287, 296, 301-310, and 312-379 had a K.sub.i within the
range of about 0.25 to about 370 nM.
[0531] Preferred Compounds 23, 30, 31, 32, 33, 50, 53, 54, 55, 56,
57A, 59, 92, 212, 215, 218, 219, 220, 224, 225, 226, 227, 229, 233,
235, 237, 238, 246, 246A, 247, 248, 251, 253, 253A, 268-273, 275,
278-281, 287, 296, 301, 304-307, 309, 312, 314-318, 320-356, and
358-376 had a K.sub.i within the range of about 0.25 to about 33
nM.
[0532] Most preferred Compounds 30, 31, 32, 33, 54, 55, 56, 56A,
225, 237, 246A, 253A, 273, 280, 287, 296, 301, 304-307, 309, 312,
314-318, 320-348, 350-356, 359-372, and 374-376 had a K.sub.i
within the range of about 0.25 to about 16 nM.
[0533] More preferred compound 32 had a K.sub.i of 0.83 nM.
[0534] More preferred compounds 54, 55, 253A, 287, 320 had a KB
within the range of about 1.05 to about 9.75 nM.
[0535] For preparing pharmaceutical compositions from the compounds
described by this invention, inert, pharmaceutically acceptable
carriers can be either solid or liquid Solid form preparations
include powders, tablets, dispersible granules, capsules, cachets
and suppositories. The powders and tablets may be comprised of from
about 5 to about 95 percent active ingredient. Suitable solid
carriers are known in the art, e.g. magnesium carbonate, magnesium
stearate, talc, sugar or lactose. Tablets, powders, cachets and
capsules can be used as solid dosage forms suitable for oral
administration. Examples of pharmaceutically acceptable carriers
and methods of manufacture for various compositions may be found in
A. Gennaro (ed.), Remington's Pharmaceutical Sciences, 18th
Edition, (1990), Mack Publishing Co., Easton, Pa.
[0536] Liquid form preparations include solutions, suspensions and
emulsions. As an example may be mentioned water or water-propylene
glycol solutions for parenteral injection or addition of sweeteners
and opacifiers for oral solutions, suspensions and emulsions.
Liquid form preparations may also include solutions for intranasal
administration.
[0537] Aerosol preparations suitable for inhalation may include
solutions and solids in powder form, which may be in combination
with a pharmaceutically acceptable carrier, such as an inert
compressed gas, e.g. nitrogen.
[0538] Also included are solid form preparations which are intended
to be converted, is shortly before use, to liquid form preparations
for either oral or parenteral administration. Such liquid forms
include solutions, suspensions and emulsions.
[0539] The compounds of the invention may also be deliverable
transdermally. The transdermal compositions can take the form of
creams, lotions, aerosols and/or emulsions and can be included in a
transdermal patch of the matrix or reservoir type as are
conventional in the art for this purpose.
[0540] Preferably the compound is administered orally.
[0541] Preferably, the pharmaceutical preparation is in a unit
dosage form. In such form, the preparation is subdivided into
suitably sized unit doses containing appropriate quantities of the
active component, e.g., an effective amount to achieve the desired
purpose.
[0542] The quantity of active compound in a unit dose of
preparation may be varied or adjusted from about 1 mg to about 150
mg, preferably from about 1 mg to about 75 mg, more preferably from
about 1 mg to about 50 mg, according to the particular
application.
[0543] The actual dosage employed may be varied depending upon the
requirements of the patient and the severity of the condition being
treated. Determination of the proper dosage regimen for a
particular situation is within the skill of the art. For
convenience, the total daily dosage may be divided and administered
in portions during the day as required.
[0544] The amount and frequency of administration of the compounds
of the invention and/or the pharmaceutically acceptable salts
thereof will be regulated according to the judgment of the
attending clinician considering such factors as age, condition and
size of the patient as well as severity of the symptoms being
treated. A typical recommended daily dosage regimen for oral
administration can range from about 1 mg/day to about 300 mg/day,
preferably 1 mg/day to 75 mg/day, in two to four divided doses.
[0545] The methods of this invention described above using a
compound of Formula I also include the use of one or more compounds
of Formula I, and the methods of this invention described above
using a compound of Formula I in combination with an H.sub.1
receptor antagonist also include the use of one or more compounds
of Formula I in combination with one or more H.sub.1 receptor
antagonists.
[0546] While the present has been described in conjunction with the
specific embodiments set forth above, many alternatives,
modifications and variations thereof will be apparent to those of
ordinary skill in the art. All such alternatives, modifications and
variations are intended to fall within the spirit and scope of the
present invention.
* * * * *