Tricyclic heterocycles as BET protein inhibitors

1. A compound of Formula (I):

or a pharmaceutically acceptable salt thereof, wherein:

represents single bond or a double bond;

L is S, SO, or SO 2 ;

X is N or NR 5 ;

Y is N, CR 6 , C(═O), or C(═S);

provided X is not NR 5 when Y is N;

Cy 1 is selected from phenyl and a 5-6 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, wherein said phenyl and 5-6 membered heteroaryl of Cy 1 are optionally substituted with 1, 2, 3, or 4 groups independently selected from R 11 ;

R 1 and R 2 are independently selected from H, halo, CN, OH, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, OR a1 , SR a1 , C(═O)R b1 , C(═O)NR c1 R d1 , C(═O)OR a1 , OC(═O)R b1 , OC(═O)NR c1 R d1 , NR c1 R d1 , NR c1 C(═O)R b1 , NR c1 C(═O)NR c1 R d1 , NR c1 C(═O)OR a1 , S(═O)R b1 , S(═O)NR c1 R d1 , S(═O) 2 R b1 , NR c1 S(═) 2 R b1 and S(═O) 2 NR c1 R d1 , wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl of R 1 and R 2 are optionally substituted with 1, 2, or 3 groups independently selected from halo, CN, OH, OR a1 , SR a1 , C(═O)R b1 , C(═O)NR c1 R d1 , C(═O)OR a1 , OC(═O)R b1 , OC(═O)NR c1 R d1 , NR c1 R d1 , NR c1 C(═O)R b1 , NR c1 C(═O)NR c1 R d1 ; NR c1 C(═O)OR a1 , S(═O)R b1 , S(═O)NR c1 R d1 , S(═O) 2 R b1 , NR c1 S(═O) 2 R b1 and S(═O) 2 NR c1 R d1 ;

provided R 1 and R 2 are other than Cl, Br, I, CN, and OH when L is S;

alternatively, R 1 and R 2 together with the carbon atom to which they are attached form a C 3-7 cycloalkyl group, wherein said cycloalkyl group is optionally substituted with 1, 2, 3, or 4 groups independently selected from R 20 ;

Cy 3 is selected from phenyl, C 3-7 cycloalkyl, a 5-10 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-10 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said phenyl, C 3-7 cycloalkyl, 5-10 membered heteroaryl, and 4-10 membered heterocycloalkyl of Cy 3 are optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 , wherein a ring-forming nitrogen atom of said 5-10 membered heteroaryl group or a ring-forming nitrogen atom of said 4-10 membered heterocycloalkyl group is optionally oxidized;

R 4 is H or C 1-6 alkyl;

R 5 is selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-7 cycloalkyl, a 5-6 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-7 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said C 1-6 alkyl, phenyl, C 3-7 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl of R 5 are optionally substituted by 1, 2, 3, or 4 groups independently selected from R 15 ;

R 6 is selected from H, halo, CN, OH, OR a6 , SR a6 , C(═O)R b6 , C(═O)NR c6 R d6 , C(═O)OR a6 , OC(═O)R b6 , OC(═O)NR c6 R d6 , NR c6 R d6 , NR c6 C(═O)R b6 , NR c6 C(═O)NR c6 R d6 , NR c6 C(═O)R a6 , S(═O)R b6 , S(═O)NR c6 R d6 , S(═O)R b6 , NR c6 S(═) 2 R b6 , S(═O) 2 NR c6 R d6 , C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, and C 1-6 haloalkyl, wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl of R 6 are each optionally substituted by 1, 2, 3, or 4 groups independently selected from R 16 ;

alternatively, R 6 is selected from C 6-10 aryl, C 3-7 cycloalkyl, a 5-10 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-7 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said C 6-10 aryl, C 3-7 cycloalkyl, 5-10 membered heteroaryl, and 4-7 membered heterocycloalkyl of R 6 are each optionally substituted by 1, 2, 3, or 4 groups independently selected from R 20 ;

R 7 is selected from H, halo, CN, OR a , NR c R d , SR b , CONR c R d , C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-7 cycloalkyl, 5-6 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-7 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, phenyl, C 3-7 cycloalkyl, 5-6 membered heteroaryl group, and 4-7 membered heterocycloalkyl group of R 7 are optionally substituted with 1, 2, or 3 groups independently selected from R 17 ;

R 8 is selected from H, C 1-3 alkyl, C 2-3 alkenyl, C 2-3 alkynyl, C 1-3 haloalkyl, halo, CN, OR a , NR c R d , SR b , and CONR c R d , wherein said C 1-3 alkyl, C 2-3 alkenyl, and C 2-3 alkynyl of R 8 are optionally substituted with 1, 2, or 3 groups independently selected from R 18 ;

R 11 is independently at each occurrence selected from H, C 1-3 alkyl, C 1-3 haloalkyl, halo, CN, OR a , NR c R d , SR b , and CONR c R d ;

R 13 is independently at each occurrence selected from H, halo, CN, OH, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, OR a3 , SR a3 , C(═O)R b3 , C(═O)NR c3 R d3 , C(═O)OR a3 , OC(═O)R b3 , OC(═O)NR c3 R d3 , NR c3 R d3 , NR c3 C(═O)R b3 , NR c3 C(═O)NR c3 R d3 , NR c3 C(═O)OR a3 , S(═O)R b3 , S(═O)NR c3 R d3 , S(═O) 2 R b3 , NR c3 S(═O) 2 R b3 and S(═O) 2 NR c3 R d3 , wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl of R 13 are optionally substituted with 1, 2, or 3 groups independently selected from halo, CN, OH, OR a3 , SR a3 , C(═O)R b3 , C(═O)NR c3 R d3 , C(═O)OR a3 , OC(═O)R b3 , OC(═O)NR c3 R d3 , NR c3 R d3 , NR c3 C(═O)R b3 , NR c3 C(═O)NR c3 R d3 , NR c3 C(═O)R a3 , S(═O)R b3 , S(═O)NR c3 R d3 , S(═O) 2 R b3 , NR c3 S(═O) 2 R b3 and S(═O) 2 NR c3 R d3 ;

R 15 is independently at each occurrence selected from H, halo, CN, OH, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, OR a5 , SR a5 , C(═O)R b5 , C(═O)NR c5 R d5 , C(═O)OR a5 , OC(═O)R b5 , OC(═O)NR c5 R d5 , NR c5 R d5 , NR c5 C(═O)R b5 , NR c5 C(═O)NR c5 R d5 , NR c5 C(═O)OR a5 , S(═O)R b5 , S(═O)NR c5 R d5 , S(═O) 2 R b5 , NR c5 S(═O) 2 R b5 and S(═O) 2 NR c5 R d5 , wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl of R 15 are optionally substituted with 1, 2, or 3 groups independently selected from halo, CN, OH, OR a5 , SR a5 , C(═O)R b5 , C(═O)NR c5 R d5 , C(═O)OR a5 , OC(═O)R b5 , OC(═O)NR c5 R d5 , NR c5 R d5 , NR c5 C(═O)R b5 , NR c5 C(═O)NR c5 R d5 , NR c5 C(═O)OR a5 , S(═O)R b5 , S(═O)NR c5 R d5 , S(═O) 2 R b5 , NR c5 S(═O) 2 R b5 and S(═O) 2 NR c5 R d5 ;

R 16 is independently at each occurrence selected from halo, CN, OH, OR a6 , SR a6 , C(═O)R b6 , C(═O)NR c6 R d6 , C(═O)OR a6 , OC(═O)R b6 , OC(═O)NR c6 R d6 , NR c6 R d6 , NR c6 C(═O)R b6 , NR c6 C(═O)NR c6 R d6 , NR c6 C(═O)OR a6 , S(═O)R b6 , S(═O)NR c6 R d6 , S(═O) 2 R b6 , NR c6 S(═O) 2 R b6 , S(═O) 2 NR c6 R d6 , C 6-10 aryl, C 3-7 cycloalkyl, a 5-10 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-7 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said C 6-10 aryl, C 3-7 cycloalkyl, 5-10 membered heteroaryl, and 4-7 membered heterocycloalkyl of R 16 are each optionally substituted by 1, 2, 3, or 4 groups independently selected R 20 ;

R 17 and R 18 are independently at each occurrence selected from halo, CN, OR a , NR c R d , SR b , and CONR c R d ;

R a , R c , and R d are independently at each occurrence selected from H and C 1-6 alkyl;

R b is at each occurrence C 1-6 alkyl;

R a1 , R b1 , R c1 and R d1 are independently at each occurrence selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, and C 1-6 haloalkyl, wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl forming R a1 , R b1 , R c1 and R d1 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 20 ;

R a3 , R b3 , R c3 and R d3 are independently at each occurrence selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, and C 1-6 haloalkyl, wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl forming R a3 , R b3 , R c3 and R d3 are each optionally substituted with 1, 2, or 3 substituents independently selected from halo, CN, OH, 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 , NR c4 R d4 , NR c4 C(═O)R b4 , NR c4 C(═O)NR c4 R d4 , NR c4 C(═O)OR a4 , S(═O)R b4 , S(═O)NR c4 R d4 , S(═O) 2 R b4 , NR c4 S(═O) 2 R b4 and S(═O) 2 NR c4 R d4 ;

R a4 , R b4 , R c4 and R d4 are independently at each occurrence selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, and C 1-6 haloalkyl, wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl forming R a4 , R b4 , R c4 and R d4 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 20 ;

R a5 , R b5 , R c5 and R d5 are independently at each occurrence selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, and C 1-6 haloalkyl, wherein said C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl forming R a5 , R b5 , R c5 and R d5 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 20 ;

R a6 , R c6 and R d6 are independently at each occurrence selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, C 6-10 aryl, C 3-7 cycloalkyl, 5-10 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-7 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, C 6-10 aryl, C 3-7 cycloalkyl, 5-10 membered heteroaryl group, and 4-7 membered heterocycloalkyl group forming R a6 , R c6 and R d6 are each optionally substituted with 1, 2, or 3 substituents independently selected from R 20 ;

alternatively, R c6 and R d6 together with the nitrogen atom to which they are attached may be combined to form a 4-7 membered heterocycloalkyl group comprising carbon, nitrogen, and 0, 1, or 2 additional heteroatoms selected from N, O and S, wherein said 4-7 membered heterocycloalkyl group is optionally substituted with 1, 2, or 3 substituents independently selected from R 20 ;

R b6 is independently at each occurrence selected from C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-7 cycloalkyl, a 5-6 membered heteroaryl group comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O and S, and a 4-7 membered heterocycloalkyl group comprising carbon and 1, 2, or 3 heteroatoms selected from N, O and S, wherein said C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 haloalkyl, phenyl, C 3-7 cycloalkyl, 5-6 membered heteroaryl group, and 4-7 membered heterocycloalkyl group are each optionally substituted with 1, 2, or 3 substituents independently selected from R 20 ; and

R 20 is at each occurrence independently selected from H, halo, OH, CN, amino, C 1-4 alkyl, C 1-4 alkoxy, C 1-4 alkylthio, C 1-4 alkylamino, di(C 1-4 alkyl)amino, C 1-4 haloalkyl, C 1-4 haloalkoxy, C 1-4 alkyl-C(═O)—, C 1-4 alkyl-C(═O)O—, C 1-4 alkyl-OC(═O)—, HOC(═O)—, H 2 NC(═O)—, C 1-4 alkyl-NHC(═O)—, di(C 1-4 alkyl)NC(═O)—, C 1-4 alkyl-C(═O)NH—, C 1-4 alkyl-S(═O)—, H 2 NS(═O)—, C 1-4 alkyl-NHS(═O)—, di(C 1-4 alkyl)NS(═O)—, C 1-4 alkyl-S(═O) 2 —, C 1-4 alkyl-S(═O) 2 NH—, H 2 NS(═O) 2 —, C 1-4 alkyl-NHS(═O) 2 —, and di(C 1-4 alkyl)NS(═O) 2 —.

2. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein X is N.

3. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein X is NR 5 .

4. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Y is CR 6 .

5. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Y is C(═O).

6. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein X Y is N═N.

7. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 1 is isoxazolyl substituted with 1 or 2 groups independently selected from R 11 .

8. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 1 is pyrazolyl substituted with 1 or 2 groups independently selected from R 11 .

9. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 1 is selected from H, methyl, —C(═O)OCH 2 CH 3 , —C(═O)N(H)CH 2 CH 3 , —C(═O)N(H)CH 2 CH 2 OH, and —C(═O)N(CH 3 ) 2 .

10. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 1 is H.

11. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 1 is methyl.

12. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 2 is H.

13. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is selected from phenyl, pyridinyl, oxidopyridinyl, thiazolyl, cyclohexyl, dihydrobenzofuranyl and tetrahydrofuranyl, wherein said phenyl, pyridinyl, oxidopyridinyl, thiazolyl, cyclohexyl, dihydrobenzofuranyl and tetrahydrofuranyl is optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

14. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is phenyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

15. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is pyridinyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

16. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is oxidopyridinyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

17. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is thiazolyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

18. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is cyclohexyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

19. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is dihydrobenzofuranyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

20. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Cy 3 is tetrahydrofuranyl optionally substituted with 1, 2, 3, or 4 groups independently selected from R 13 .

21. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 5 is methyl.

22. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 5 is H.

23. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 6 is H, C 1-6 alkoxy, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, or C 1-6 haloalkyl.

24. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 6 is H.

25. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 6 is methoxy.

26. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is selected from H, halo, C 1-4 alkyl, and CN.

27. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is selected from H, Br, F, methyl, and CN.

28. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is H.

29. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is Br.

30. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is F.

31. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is methyl.

32. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 7 is CN.

33. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 8 is selected from H, halo, C 1-4 alkyl, and CN.

34. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 8 is H.

35. A pharmaceutical composition comprising a compound of claim 1 , or a pharmaceutically acceptable salt thereof, and at least one pharmaceutically acceptable carrier.

36. A method of treating adenocarcinoma, adult T-cell leukemia/lymphoma, bladder cancer, blastoma, bone cancer, breast cancer, brain cancer, carcinoma, myeloid sarcoma, cervical cancer, colorectal cancer, esophageal cancer, gastrointestinal cancer, glioblastoma multiforme, glioma, gallbladder cancer, gastric cancer, head and neck cancer, Hodgkin's lymphoma, non-Hodgkin's lymphoma, intestinal cancer, kidney cancer, laryngeal cancer, leukemia, lung cancer, lymphoma, liver cancer, small cell lung cancer, non-small cell lung cancer, mesothelioma, multiple myeloma, ocular cancer, optic nerve tumor, oral cancer, ovarian cancer, pituitary tumor, primary central nervous system lymphoma, prostate cancer, pancreatic cancer, pharyngeal cancer, renal cell carcinoma, rectal cancer, sarcoma, skin cancer, spinal tumor, small intestine cancer, stomach cancer, T-cell lymphoma, testicular cancer, thyroid cancer, throat cancer, urogenital cancer, urothelial carcinoma, uterine cancer, vaginal cancer, or Wilms' tumor comprising administering to a patient in need of such treatment a therapeutically effective amount of a compound of claim 1 , or a pharmaceutically acceptable salt thereof.

37. A method of treating allergy, allergic rhinitis, arthritis, asthma, chronic obstructive pulmonary disease, degenerative joint disease, dermatitis, organ rejection, eczema, hepatitis, inflammatory bowel disease, multiple sclerosis, myasthenia gravis, psoriasis, sepsis, sepsis syndrome, septic shock, systemic lupus erythematosus, tissue graft rejection, or type I diabetes comprising administering to a patient in need of such treatment a therapeutically effective amount of a compound of claim 1 , or a pharmaceutically acceptable salt thereof.

38. A method of treating a viral infection comprising administering to a patient in need of such treatment a therapeutically effective amount of a compound of claim 1 , or a pharmaceutically acceptable salt thereof.

39. The method of claim 38 , wherein the viral infection is infection with adenovirus, Epstein-Barr virus, hepatitis B virus, hepatitis C virus, a herpes virus, human immunodeficiency virus, human papilloma virus or a pox virus.