Compounds and compositions as protein kinase inhibitors

1. A method for treating a B-Raf protein kinase mediated cancer, wherein the cancer is selected from the group consisting of lung carcinoma, pancreatic carcinoma, bladder carcinoma, colon carcinoma, myeloid disorders, prostate cancer, thyroid cancer, melanoma, adenomas and carcinomas of the ovary, eye, liver, biliary tract, and nervous system, and wherein the method comprises administering to a subject in need of such treatment an effective amount of a compound of Formula (Ia), or a tautomer, stereoisomer or pharmaceutically acceptable salt thereof;

wherein the compound of Formula (Ia) is

in which:

Y is selected from N and CR 6 ;

R 2 , R 3 , R 5 and R 6 are independently selected from hydrogen, halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy; with the proviso that when R 5 is fluoro, R 3 and R 6 are not both hydrogen;

R 4 is selected from —R 9 and —NR 10 R 11 ; wherein R 9 is selected from C 1-6 alkyl, C 3-8 cycloalkyl, C 3-8 heterocycloalkyl, aryl and heteroaryl; wherein

said alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl of R 9 is optionally substituted with 1 to 3 radicals independently selected from halo, cyano, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy;

and R 10 and R 11 are independently selected from hydrogen and R 9 ;

R 7 is selected from hydrogen, C 1-4 alkyl, C 3-5 cycloalkyl and C 3-5 heterocycloalkyl;

wherein said alkyl, cycloalkyl or heterocycloalkyl of R 7 is optionally substituted with 1 to 3 radicals independently selected from halo, cyano, hydroxyl, C 1-4 alkyl, halo-substituted-C 1-4 alkyl, C 1-4 alkoxy and halo-substituted-C 1-4 alkoxy.

2. The method of claim 1 in which R 4 is —R 9 ;

wherein R 9 is selected from C 1-3 alkyl and C 3-8 cycloalkyl; wherein said alkyl or cycloalkyl of R 9 is optionally substituted with 1 to 3 radicals independently selected from halo and halo-substituted-C 1-4 alkyl.

3. The method of claim 2 in which:

R 2 is selected from hydrogen and fluoro;

R 3 is selected from chloro, fluoro and methyl;

R 5 is selected from hydrogen, chloro and fluoro;

Y is selected from N and CR 6 ; and

R 6 is selected from hydrogen and fluoro.

4. The method of claim 1 , wherein the compound of Formula (Ia) is selected from:

methyl N-[(2S)-1-({4-[3-(3-chloro-5-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-[(4-{3-[3-chloro-5-(propane-1-sulfonamido)phenyl]-1-(propan-2-yl)-1H-pyrazol-4-yl}pyrimidin-2-yl)amino]propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(3-chloro-2-methanesulfonamidopyridin-4-yl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(3-fluoro-2-methanesulfonamidopyridin-4-yl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(2-chloro-3-ethanesulfonamido-4,5-difluorophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(2,4-difluoro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[1-(propan-2-yl)-3-(2,4,5-trifluoro-3-methanesulfonamidophenyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(3-ethanesulfonamido-2,4-difluorophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-2-({4-[3-(5-chloro-2-fluoro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propyl]carbamate;

methyl N-[(2S)-1-({4-[3-(5-chloro-2-fluoro-3-methanesulfonamidophenyl)-1-(oxan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-[(4-{3-[2,4-difluoro-3-(propane-1-sulfonamido)phenyl]-1-(propan-2-yl)-1H-pyrazol-4-yl}pyrimidin-2-yl)amino]propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(3-cyclopropanesulfonamido-2,5-difluorophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(5-chloro-3-cyclopropanesulfonamido-2-fluorophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(5-chloro-2-fluoro-3-methanesulfonamidophenyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate; and

methyl N-[(2S)-1-[(4-{3-[5-chloro-2-fluoro-3-(propane-1-sulfonamido)phenyl]-1-(propan-2-yl)-1H-pyrazol-4-yl}pyrimidin-2-yl)amino]propan-2-yl]carbamate.

5. The method of claim 1 wherein the compound of Formula (Ia) is a compound of Formula (Ib):

in which:

R 3 is selected from chloro, fluoro and methyl;

R 5 is selected from fluoro and chloro; and

R 7 is selected from ethyl and isopropyl.

6. The method of claim 5 wherein the compound of Formula (Ib) is selected from:

methyl N-[(2S)-1-({4-[3-(5-chloro-2-fluoro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(2,5-difluoro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(5-chloro-2-fluoro-3-methanesulfonamidophenyl)-1-ethyl-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(2-fluoro-3-methanesulfonamido-5-methylphenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(2-chloro-3-methanesulfonamido-5-methylphenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2S)-1-({4-[3-(2-chloro-5-fluoro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate;

methyl N-[(2R)-1-({4-[3-(5-chloro-2-fluoro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate; and

methyl N-[(2S)-1-({4-[3-(2,5-dichloro-3-methanesulfonamidophenyl)-1-(propan-2-yl)-1H-pyrazol-4-yl]pyrimidin-2-yl}amino)propan-2-yl]carbamate.

7. The method of claim 1 , further comprising administering to the subject an additional therapeutic agent selected from an anticancer drug, a pain medication, an antiemetic, an antidepressant or an anti-inflammatory agent.

8. The method of claim 7 , wherein the additional therapeutic agent is administered to the subject simultaneously, concurrently or sequentially with the compound of Formula (Ia).

9. The method of claim 8 , wherein the additional therapeutic agent is a Raf kinase inhibitor or an inhibitor of MEK, mTOR, HSP90, AKT, PI3K, CDK9, PAK, Protein Kinase C, a MAP kinase, a MAPK Kinase, or ERK.

10. The method of claim 9 , wherein the additional therapeutic agent is an inhibitor of MEK or PI3K.

11. The method of claim 10 , wherein the MEK inhibitor is selected from: AS703026; MSC1936369B; GSK1120212; AZD6244; PD-0325901; ARRY-438162; RDEA119; GDC0941; GDC0973; TAK-733; RO5126766; and XL-518.

12. The method of claim 11 , wherein the MEK inhibitor is ARRY-438162.

13. The method of claim 11 , wherein the MEK inhibitor is ARRY-438162 which is administered to the subject sequentially with the compound of Formula (Ia).

14. The method of claim 5 , further comprising administering to the subject an additional therapeutic agent selected from an anticancer drug, a pain medication, an antiemetic, an antidepressant or an anti-inflammatory agent.

15. The method of claim 14 , wherein the additional therapeutic agent is administered to the subject simultaneously, concurrently or sequentially with the compound of Formula (Ib).

16. The method of claim 15 , wherein the additional therapeutic agent is a Raf kinase inhibitor or an inhibitor of MEK, mTOR, HSP90, AKT, PI3K, CDK9, PAK, Protein Kinase C, a MAP kinase, a MAPK Kinase, or ERK.

17. The method of claim 16 , wherein the additional therapeutic agent is an inhibitor of MEK or PI3K.

18. The method of claim 17 , wherein the MEK inhibitor is selected from: AS703026; MSC1936369B; GSK1120212; AZD6244; PD-0325901; ARRY-438162; RDEA119; GDC0941; GDC0973; TAK-733; RO5126766; and XL-518.

19. The method of claim 18 wherein the MEK inhibitor is ARRY-438162.

20. The method of claim 18 , wherein the MEK inhibitor is ARRY-438162 which is administered to the subject sequentially with the compound of Formula (Ib).

21. The method of claim 6 , further comprising administering to the subject an additional therapeutic agent selected from an anticancer drug, a pain medication, an antiemetic, an antidepressant or an anti-inflammatory agent.

22. The method of claim 21 , wherein the additional therapeutic agent is administered to the subject simultaneously, concurrently or sequentially with the compound of Formula (Ib).

23. The method of claim 22 , wherein the additional therapeutic agent is a Raf kinase inhibitor or an inhibitor of MEK, mTOR, HSP90, AKT, PI3K, CDK9, PAK, Protein Kinase C, a MAP kinase, a MAPK Kinase, or ERK.

24. The method of claim 23 , wherein the additional therapeutic agent is an inhibitor of MEK or PI3K.

25. The method of claim 23 , wherein the MEK inhibitor is selected from: AS703026; MSC1936369B; GSK1120212; AZD6244; PD-0325901; ARRY-438162; RDEA119; GDC0941; GDC0973; TAK-733; RO5126766; and XL-518.

26. The method of claim 25 , wherein the MEK inhibitor is ARRY-438162.

27. The method of claim 25 , wherein the MEK inhibitor is ARRY-438162 which is administered to the subject sequentially with the compound of Formula (Ib).