Bicyclic heterocycles as FGFR4 inhibitors

1. A method of treating cancer in a patient in need thereof, comprising administering to said patient a therapeutically effective amount of a compound of Formula (I):

or a pharmaceutically acceptable salt thereof, wherein:

X 1 is CR 10 R 11 ;

X is N or CR 6 ;

R 1 is C 1-3 alkyl or C 1-3 haloalkyl;

R 2 is H, halo, C 1-3 alkyl, C 1-3 haloalkyl, CN, or C 1-3 alkoxy;

R 3 is H, halo, C 1-3 alkyl, C 1-3 haloalkyl, CN, or C 1-3 alkoxy;

R 4 is C 1-3 alkyl or C 1-3 haloalkyl;

R 5 is H, halo, C 1-3 alkyl, C 1-3 haloalkyl, CN, or C 1-3 alkoxy;

R 6 is selected from H, halo, CN, OR a4 , SR a4 , C(O)NR c4 R d4 , OC(O)NR c4 R d4 , NR c4 R d4 , NR c4 C(O)R b4 , NR c4 C(O)OR a4 , NR c4 C(O)NR c4 R d4 , NR c4 S(O)R b4 , NR c4 S(O) 2 R b4 , NR c4 S(O) 2 NR c4 R d4 , S(O)R b4 , S(O)NR c4 R d4 , S(O) 2 R b4 , S(O) 2 NR c4 R d4 , C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-6 cycloalkyl, a 5-6 membered heteroaryl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S, and a 4-7 membered heterocycloalkyl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S; wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, phenyl, C 3-6 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl groups of R 6 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 10A ;

L is —(CR 13 R 14 ) n —, wherein R 13 and R 14 are each independently H;

the subscript n is 1 or 2;

R 8 is H;

R 10 and R 11 are each independently selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, C 6-10 aryl, C 3-10 cycloalkyl, a 5-10 membered heteroaryl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S, and a 4-10 membered heterocycloalkyl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S; wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 6-10 aryl, C 3-10 cycloalkyl, 5-10 membered heteroaryl, and 4-10 membered heterocycloalkyl groups of R 10 and R 11 are each optionally substituted with 1, 2, 3, or 4 R 10A ;

R 10A , at each occurrence, is independently selected from halo, CN, NO 2 , OR a4 , SR a4 , C(O)R b4 , C(O)NR c4 R d4 , C(O)OR a4 , OC(O)R b4 , OC(O)NR c4 R d4 , C(═NR e4 )NR c4 R d4 , NR c4 C(═NR e4 )NR c4 R d4 , NR c4 R d4 , NR c4 C(O)R b4 , NR c4 C(O)OR a4 , NR c4 C(O)NR c4 R d4 , NR c4 S(O)R b4 , NR c4 S(O) 2 R b4 , NR c4 S(O) 2 NR c4 R d4 , S(O)R b4 , S(O)NR c4 R d4 , S(O) 2 R b4 , S(O) 2 NR c4 R d4 , C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-6 cycloalkyl, a 5-6 membered heteroaryl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S, and a 4-7 membered heterocycloalkyl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S; wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, phenyl, C 3-6 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl group of R 10A are each optionally substituted with 1, 2, or 3 substituents independently selected from R 19 ;

R a4 , R b4 , R c4 , and R d4 , at each occurrence, are independently selected from H, C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, C 1-4 haloalkyl, phenyl, C 3-6 cycloalkyl, a 5-6 membered heteroaryl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S, and a 4-7 membered heterocycloalkyl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S; wherein said C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, phenyl, C 3-6 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl group of R a4 , R b4 , R c4 , and R d4 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 19 ;

alternatively, R c4 and R d4 together with the nitrogen atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group which is optionally substituted with 1, 2 or 3 substituents independently selected from R 19 ;

R e4 , at each occurrence, is H or C 1-4 alkyl;

alternatively, R 10 and R 11 together with the carbon atom to which they are attached form a 3-, 4-, 5-, 6-, or 7-membered cycloalkyl group or a 4-, 5-, 6-, 7-, 8-, 9-, or 10-membered heterocycloalkyl group; wherein said 3-, 4-, 5-, 6-, or 7-membered cycloalkyl group and 4-, 5-, 6-, 7-, 8-, 9-, or 10-membered heterocycloalkyl group are each optionally substituted with 1, 2, 3 or 4 R 10A ;

R 12 is H or C 1-4 alkyl which is optionally substituted by R 17 ;

R 17 , at each occurrence, is independently selected from halo, CN, NO 2 , OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , (O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)OR a7 NR c7 (O)NR c7 R d7 , NR c7 S(O)R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , S(O) 2 NR c7 R d7 , C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-6 cycloalkyl, a 5-6 membered heteroaryl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S, and a 4-7 membered heterocycloalkyl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S; wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, phenyl, C 3-6 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl groups of R 17 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 19 ;

R a7 , R b7 , R c7 , and R d7 , at each occurrence, are independently selected from H, C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, C 1-4 haloalkyl, phenyl, C 3-6 cycloalkyl, a 5-6 membered heteroaryl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S, and a 4-7 membered heterocycloalkyl moiety having carbon and 1, 2, or 3 heteroatoms independently selected from N, O and S; wherein said C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, phenyl, C 3-6 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl groups of R a7 , R b7 , R c7 , and R d7 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 19 ;

alternatively, R c7 and R d7 together with the nitrogen atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group which is optionally substituted with 1, 2 or 3 substituents independently selected from R 19 ;

R e7 , at each occurrence, is independently H or C 1-4 alkyl;

R 19 , at each occurrence, is independently selected from halo, CN, NO 2 , OR a9 , SR a9 , C(O)R b9 , C(O)NR c9 R d9 , C(O)OR a9 , OC(O)R b9 , OC(O)NR c9 R d9 , NR c9 R d9 , NR c9 C(O)R b9 , NR c9 C(O)OR a9 , NR c9 C(O)NR c9 R d9 , NR c9 S(O)R b9 , NR c9 S(O) 2 R b9 , NR c9 S(O) 2 NR c9 R d9 , S(O)R b9 , S(O)NR c9 R d9 , S(O) 2 R b9 , S(O) 2 NR c9 R d9 , C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, and C 1-4 haloalkyl;

R a9 , R c9 , and R d9 , at each occurrence, are independently selected from H and C 1-4 alkyl; and

R b9 , at each occurrence, is independently C 1-4 alkyl;

wherein the cancer exhibits expression of a FGFR4 enzyme.

2. The method of claim 1 , wherein R 2 is F and R 5 is F.

3. The method of claim 1 , wherein the compound has Formula (V):

or a pharmaceutically acceptable salt thereof.

4. The method of claim 1 , wherein R 10 is C 1-6 alkyl and R 11 is C 1-6 alkyl.

5. The method of claim 1 , wherein R 10 and R 11 are each methyl.

6. The method of claim 1 , wherein R 10 and R 11 together with the carbon atom to which they are attached form a 3-, 4-, 5-, 6-, or 7-membered cycloalkyl group.

7. The method of claim 1 , wherein R 10 and R 11 together with the carbon atom to which they are attached form a cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl group.

8. The method of claim 1 , wherein R 10 and R 11 together with the carbon atom to which they are attached form a cyclopropyl or cyclopentyl.

9. The method of claim 1 , wherein R 10 and R 11 together with the carbon atom to which they are attached form a cyclopropyl group.

10. The method of claim 1 , wherein R 10 and R 11 together with the carbon atom to which they are attached form 4-, 5-, 6-, or 7-membered heterocycloalkyl group.

11. The method of claim 1 , wherein R 10 and R 11 together with the carbon atom to which they are attached form a tetrahydropyranyl group.

12. The method of claim 1 , wherein L is —CH 2 —.

13. The method of claim 1 , wherein R 1 and R 4 are each C 1-3 alkyl.

14. The method of claim 1 , wherein R 1 and R 4 are methyl.

15. The method of claim 1 , wherein X is CH or N.

16. The method of claim 1 , wherein X is CH.

17. The method of claim 1 , wherein X is N.

18. The method of claim 1 , wherein R 12 is H.

19. The method of claim 1 , wherein the compound is selected from the group consisting of:

N-{[2′-(2,6-difluoro-3,5-dimethoxyphenyl)-3′-oxo-2′,3′-dihydro-1′H-spiro[cyclopropane-1,4′-[2,7]naphthyridin]-6′-yl]methyl}acrylamide;

N-((6′-(2,6-difluoro-3,5-dimethoxyphenyl)-7′-oxo-6′,7′-dihydro-5′H-spiro[cyclopropane-1,8′-pyrido[4,3-d]pyrimidine]-2′-yl)methyl)acrylamide;

N-((2′-(2,6-difluoro-3,5-dimethoxyphenyl)-3′-oxo-2′,3′-dihydro-1′H-spiro[cyclopentane-1,4′-[2,7]naphthyridine]-6′-yl)methyl)acrylamide;

N-((7-(2,6-difluoro-3,5-dimethoxyphenyl)-5,5-dimethyl-6-oxo-5,6,7,8-tetrahydro-2,7-naphthyridin-3-yl)methyl)acrylamide; and

N-((2′-(2,6-difluoro-3,5-dimethoxyphenyl)-5′-methyl-3′-oxo-2′,3′-dihydro-1′H-spiro[cyclopropane-1,4′-[2,7]naphthyridine]-6′-yl)methyl)acrylamide;

or a pharmaceutically acceptable salt thereof.

20. The method of claim 1 , wherein the cancer is selected from the group consisting of hepatocellular carcinoma, ovarian cancer, kidney cancer, esophageal cancer, head and neck cancer, rhabdomyosarcoma, breast cancer, lung cancer, colorectal cancer, and prostate cancer.

21. The method of claim 1 , wherein the cancer is hepatocellular carcinoma.

22. The method of claim 1 , wherein the cancer is ovarian cancer.

23. The method of claim 1 , wherein the cancer is kidney cancer.

24. The method of claim 1 , wherein the cancer is esophageal cancer.

25. The method of claim 1 , wherein the cancer is head and neck cancer.

26. The method of claim 1 , wherein the cancer is rhabdomyosarcoma.

27. The method of claim 1 , wherein the cancer is breast cancer.

28. The method of claim 1 , wherein the cancer is lung cancer.

29. The method of claim 28 , wherein the lung cancer is non-small cell lung cancer.

30. The method of claim 28 , wherein the lung cancer is adenocarcinoma, small cell lung cancer, parvicellular carcinoma, non-parvicellular carcinoma, bronchial carcinoma, bronchial adenoma, or pleuropulmonary blastoma.

31. The method of claim 1 , wherein the cancer is colorectal cancer.

32. The method of claim 1 , wherein the cancer is prostate cancer.