Tricyclic heterocycles as BET protein inhibitors

A compound of Formula (I):

• or a pharmaceutically acceptable salt thereof, wherein:
• represents single bond or a double bond;
• L is S, SO, or SO2;
• X is N or NR5;
• Y is N, CR6, C(═O), or C(═S);
• provided X is not NR5 when Y is N;
• Cy1 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 Cy1 are optionally substituted with 1, 2, 3, or 4 groups independently selected from R11;
• R1 and R2 are independently selected from H, halo, CN, OH, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, ORa1, SRa1, C(═O)Rb1, C(═O)NRc1Rd1, C(═O)ORa1, OC(═O)Rb1, OC(═O)NRc1Rd1, NRc1Rd1, NRc1C(═O)Rb1, NRc1C(═O)NRc1Rd1, NRc1C(═O)ORa1, S(═O)Rb1, S(═O)NRc1Rd1, S(═O)2Rb1, NRc1S(═)2Rb1 and S(═O)2NRc1Rd1, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl of R1 and R2 are optionally substituted with 1, 2, or 3 groups independently selected from halo, CN, OH, ORa1, SRa1, C(═O)Rb1, C(═O)NRc1Rd1, C(═O)ORa1, OC(═O)Rb1, OC(═O)NRc1Rd1, NRc1Rd1, NRc1C(═O)Rb1, NRc1C(═O)NRc1Rd1;
• NRc1C(═O)ORa1, S(═O)Rb1, S(═O)NRc1Rd1, S(═O)2Rb1, NRc1S(═O)2Rb1 and S(═O)2NRc1Rd1;
• provided R1 and R2 are other than Cl, Br, I, CN, and OH when L is S;
• alternatively, R1 and R2 together with the carbon atom to which they are attached form a C3-7 cycloalkyl group, wherein said cycloalkyl group is optionally substituted with 1, 2, 3, or 4 groups independently selected from R20;
• Cy3 is selected from phenyl, C3-7 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, C3-7 cycloalkyl, 5-10 membered heteroaryl, and 4-10 membered heterocycloalkyl of Cy3 are optionally substituted with 1, 2, 3, or 4 groups independently selected from R13, 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;
• R4 is H or C1-6 alkyl;
• R5 is selected from H, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, phenyl, C3-7 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 C1-6 alkyl, phenyl, C3-7 cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl of R5 are optionally substituted by 1, 2, 3, or 4 groups independently selected from R15;
• R6 is selected from H, halo, CN, OH, ORa6, SRa6, C(═O)Rb6, C(═O)NRc6Rd6, C(═O)ORa6, OC(═O)Rb6, OC(═O)NRc6Rd6, NRc6Rd6, NRc6C(═O)Rb6, NRc6C(═O)NRc6Rd6, NRc6C(═O)Ra6, S(═O)Rb6, S(═O)NRc6Rd6, S(═O)Rb6, NRc6S(═)2Rb6, S(═O)2NRc6Rd6, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, and C1-6 haloalkyl, wherein said C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl of R6 are each optionally substituted by 1, 2, 3, or 4 groups independently selected from R16;
• alternatively, R6 is selected from C6-10 aryl, C3-7 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 C6-10 aryl, C3-7 cycloalkyl, 5-10 membered heteroaryl, and 4-7 membered heterocycloalkyl of R6 are each optionally substituted by 1, 2, 3, or 4 groups independently selected from R20;
• R7 is selected from H, halo, CN, ORa, NRcRd, SRb, CONRcRd, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, phenyl, C3-7 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 C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, phenyl, C3-7 cycloalkyl, 5-6 membered heteroaryl group, and 4-7 membered heterocycloalkyl group of R7 are optionally substituted with 1, 2, or 3 groups independently selected from R17;
• R8 is selected from H, C1-3 alkyl, C2-3 alkenyl, C2-3 alkynyl, C1-3 haloalkyl, halo, CN, ORa, NRcRd, SRb, and CONRcRd, wherein said C1-3 alkyl, C2-3 alkenyl, and C2-3 alkynyl of R8 are optionally substituted with 1, 2, or 3 groups independently selected from R18;
• R11 is independently at each occurrence selected from H, C1-3 alkyl, C1-3 haloalkyl, halo, CN, ORa, NRcRd, SRb, and CONRcRd;
• R13 is independently at each occurrence selected from H, halo, CN, OH, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, ORa3, SRa3, C(═O)Rb3, C(═O)NRc3Rd3, C(═O)ORa3, OC(═O)Rb3, OC(═O)NRc3Rd3, NRc3Rd3, NRc3C(═O)Rb3, NRc3C(═O)NRc3Rd3, NRc3C(═O)ORa3, S(═O)Rb3, S(═O)NRc3Rd3, S(═O)2Rb3, NRc3 S(═O)2Rb3 and S(═O)2NRc3Rd3, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl of R13 are optionally substituted with 1, 2, or 3 groups independently selected from halo, CN, OH, ORa3, SRa3, C(═O)Rb3, C(═O)NRc3Rd3, C(═O)ORa3, OC(═O)Rb3, OC(═O)NRc3Rd3, NRc3Rd3, NRc3C(═O)Rb3, NRc3C(═O)NRc3Rd3, NRc3C(═O)Ra3, S(═O)Rb3, S(═O)NRc3Rd3, S(═O)2Rb3, NRc3S(═O)2Rb3 and S(═O)2NRc3Rd3;
• R15 is independently at each occurrence selected from H, halo, CN, OH, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, ORa5, SRa5, C(═O)Rb5, C(═O)NRc5Rd5, C(═O)ORa5, OC(═O)Rb5, OC(═O)NRc5Rd5, NRc5Rd5, NRc5C(═O)Rb5, NRc5C(═O)NRc5Rd5, NRc5C(═O)ORa5, S(═O)Rb5, S(═O)NRc5Rd5, S(═O)2Rb5, NRc5S(═O)2Rb5 and S(═O)2NRc5Rd5, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl of R15 are optionally substituted with 1, 2, or 3 groups independently selected from halo, CN, OH, ORa5, SRa5, C(═O)Rb5, C(═O)NRc5Rd5, C(═O)ORa5, OC(═O)Rb5, OC(═O)NRc5Rd5, NRc5Rd5, NRc5C(═O)Rb5, NRc5C(═O)NRc5Rd5, NRc5C(═O)ORa5, S(═O)Rb5, S(═O)NRc5Rd5, S(═O)2Rb5, NRc5S(═O)2Rb5 and S(═O)2NRc5Rd5;
• R16 is independently at each occurrence selected from halo, CN, OH, ORa6, SRa6, C(═O)Rb6, C(═O)NRc6Rd6, C(═O)ORa6, OC(═O)Rb6, OC(═O)NRc6Rd6, NRc6Rd6, NRc6C(═O)Rb6, NRc6C(═O)NRc6Rd6, NRc6C(═O)ORa6, S(═O)Rb6, S(═O)NRc6Rd6, S(═O)2Rb6, NRc6S(═O)2Rb6, S(═O)2NRc6Rd6, C6-10 aryl, C3-7 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 C6-10 aryl, C3-7 cycloalkyl, 5-10 membered heteroaryl, and 4-7 membered heterocycloalkyl of R16 are each optionally substituted by 1, 2, 3, or 4 groups independently selected R20;
• R17 and R18 are independently at each occurrence selected from halo, CN, ORa, NRcRd, SRb, and CONRcRd;
• Ra, Rc, and Rd are independently at each occurrence selected from H and C1-6 alkyl;
• Rb is at each occurrence C1-6 alkyl;
• Ra1, Rb1, Rc1 and Rd1 are independently at each occurrence selected from H, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, and C1-6 haloalkyl, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl forming Ra1, Rb1, Rc1 and Rd1 are each optionally substituted with 1, 2, or 3 substituents independently selected from R20;
• Ra3, Rb3, Rc3 and Rd3 are independently at each occurrence selected from H, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, and C1-6 haloalkyl, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl forming Ra3, Rb3, Rc3 and Rd3 are each optionally substituted with 1, 2, or 3 substituents independently selected from halo, CN, OH, ORa4, SRa4, C(═O)Rb4, C(═O)NRc4Rd4, C(═O)ORa4, OC(═O)Rb4, OC(═O)NRc4Rd4, NRc4Rd4, NRc4C(═O)Rb4, NRc4C(═O)NRc4Rd4, NRc4C(═O)ORa4, S(═O)Rb4, S(═O)NRc4Rd4, S(═O)2Rb4, NRc4S(═O)2Rb4 and S(═O)2NRc4Rd4;
• Ra4, Rb4, Rc4 and Rd4 are independently at each occurrence selected from H, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, and C1-6 haloalkyl, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl forming Ra4, Rb4, Rc4 and Rd4 are each optionally substituted with 1, 2, or 3 substituents independently selected from R20;
• Ra5, Rb5, Rc5 and Rd5 are independently at each occurrence selected from H, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, and C1-6 haloalkyl, wherein said C1-6 alkyl, C2-6 alkenyl, and C2-6 alkynyl forming Ra5, Rb5, Rc5 and Rd5 are each optionally substituted with 1, 2, or 3 substituents independently selected from R20;
• Ra6, Rc6 and Rd6 are independently at each occurrence selected from H, C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, C6-10 aryl, C3-7 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 C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, C6-10 aryl, C3-7 cycloalkyl, 5-10 membered heteroaryl group, and 4-7 membered heterocycloalkyl group forming Ra6, Rc6 and Rd6 are each optionally substituted with 1, 2, or 3 substituents independently selected from R20;
• alternatively, Rc6 and Rd6 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 R20;
• Rb6 is independently at each occurrence selected from C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, phenyl, C3-7 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 C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C1-6 haloalkyl, phenyl, C3-7 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 R20;
• and
• R20 is at each occurrence independently selected from H, halo, OH, CN, amino, C1-4 alkyl, C1-4 alkoxy, C1-4 alkylthio, C1-4 alkylamino, di(C1-4 alkyl)amino, C1-4 haloalkyl, C1-4 haloalkoxy, C1-4 alkyl-C(═O)—, C1-4 alkyl-C(═O)O—, C1-4 alkyl-OC(═O)—, HOC(═O)—, H2NC(═O)—, C1-4 alkyl-NHC(═O)—, di(C1-4 alkyl)NC(═O)—, C1-4 alkyl-C(═O)NH—, C1-4 alkyl-S(═O)—, H2NS(═O)—, C1-4 alkyl-NHS(═O)—, di(C1-4alkyl)NS(═O)—, C1-4 alkyl-S(═O)2—, C1-4 alkyl-S(═O)2NH—, H2NS(═O)2—, C1-4 alkyl-NHS(═O)2—, and di(C1-4 alkyl)NS(═O)2—.