Tetrahydro- and dihydro-isoquinoline PRMT5 inhibitors and uses thereof

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

or a pharmaceutically acceptable salt thereof,

wherein:

represents a single or double bond;

R 1 is hydrogen or R z , wherein R z is C 1-6 alkyl;

L is —N(R)C(O)—, —C(O)N(R)—, —N(R)C(O)O—, or —OC(O)N(R)—;

each R is independently hydrogen or optionally substituted C 1-6 aliphatic;

Ar is a monocyclic or bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R y groups, as valency permits;

each R y is independently selected from the group consisting of halo, —CN, —NO 2 , optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR A , —N(R B ) 2 , —SR A , —C(═O)R A , —C(O)OR A , —C(O)SR A , —C(O)N(R B ) 2 , —C(O)N(R B )N(R B ) 2 , —OC(O)R A , —OC(O)N(R B ) 2 , —NR B C(O)R A , —NR B C(O)N(R B ) 2 , —NR B C(O)N(R B )N(R B ) 2 , —NR B C(O)OR A , —SC(O)R A , —C(═NR B )R A , —C(═NNR B )R A , —C(═NOR A )R A , —C(═NR B )N(R B ) 2 , —NR B C(═NR B )R B , —C(═S)R A , —C(═S)N(R B ) 2 , —NR B C(═S)R A , —S(O)R A , —OS(O) 2 R A , —SO 2 R A , —NR B SO 2 R A , and —SO 2 N(R B ) 2 ;

each R A is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl;

each R B is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl, or two R B groups are taken together with their intervening atoms to form an optionally substituted heterocyclic ring;

R 5 , R 6 , R 7 , and R 8 are independently hydrogen or C 1-6 alkyl;

each R x is independently C 1-6 alkyl;

R′ is hydrogen or optionally substituted aliphatic;

each R″ is independently hydrogen or optionally substituted aliphatic, or two R″ are taken together with their intervening atoms to form a heterocyclic ring; and

n is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, as valency permits;

wherein each instance of aliphatic is independently an alkyl, alkenyl, alkynyl, cycloalkyl, or cycloalkenyl group; and

each instance of optionally substituted is independently unsubstituted or substituted, and each instance of substituted is, when on a carbon atom, halogen, —CN, —NO 2 , —N 3 , —SO 2 H, —SO 3 H, —OH, —OR aa , —ON(R bb ) 2 , —N(R bb ) 2 , —N(R bb ) 3 + X − , —N(OR cc )R bb , —SH, —SR aa , —SSR cc , —C(═O)R aa , —CO 2 H, —CHO, —C(OR cc ) 2 , —CO 2 R aa , —OC(═O)R aa , —OCO 2 R aa , —C(═O)N(R bb ) 2 , —OC(═O)N(R bb ) 2 , —NR bb C(═O)R aa , —NR bb CO 2 R aa , —NR bb C(═O)N(R bb ) 2 , —C(═NR bb )R aa , —C(═NR bb )OR aa , —OC(═NR bb )R aa , —OC(═NR bb )OR aa , —C(═NR bb )N(R bb ) 2 , —OC(═NR bb )N(R bb ) 2 , —NR bb C(═NR bb )N(R bb ) 2 , —C(═O)NR bb SO 2 R aa , —NR bb SO 2 R aa , —SO 2 N(R bb ) 2 , —SO 2 R aa , —SO 2 OR aa , —OSO 2 R aa , —S(═O)R aa , —OS(═O)R aa , —Si(R aa ) 3 , —OSi(R aa ) 3 —C(═S)N(R bb ) 2 , —C(═O)SR aa , —C(═S)SR aa , —SC(═S)SR aa , —SC(═O)SR aa , —OC(═O)SR aa , —SC(═O)OR aa , —SC(═O)R aa , —P(═O)(R aa ) 2 , —OP(═O)(R aa ) 2 , —OP(═O)(OR cc ) 2 , —P(═O) 2 N(R bb ) 2 , —OP(═O) 2 N(R bb ) 2 , —P(═O)(NR bb ) 2 , —OP(═O)(NR bb ) 2 , —NR bb P(═O)(OR cc ) 2 , —NR bb P(═O)(NR bb ) 2 , —P(R cc ) 2 , —OP(R cc ) 2 , —OP(R cc ) 3 , —B(R aa ) 2 , —B(OR cc ) 2 , —BR aa (OR cc ), C 1-10 alkyl, C 1-10 perhaloalkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 3-10 carbocyclyl, 3-14 membered heterocyclyl, C 6-14 aryl, and 5-14 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R dd groups, or two geminal hydrogens on a carbon atom are replaced with the group ═O, ═S, ═NN(R bb ) 2 , ═NNR bb C(═O)R aa , ═NNR bb C(═O)OR aa , ═NNR bb S(═O) 2 R aa , ═NR bb , or ═NOR cc ;

each instance of substituted is, when on a nitrogen, independently —OH, —OR aa , —N(R cc ) 2 , —CN, —C(═O)R aa , —C(═O)N(R cc ) 2 , —CO 2 R aa , —SO 2 R aa , —C(═NR bb )R aa , —C(═NR cc )OR aa , —C(═NR cc )N(R cc ) 2 , —SO 2 N(R cc ) 2 , —SO 2 R cc , —SO 2 OR cc , —SOR aa , —C(═S)N(R cc ) 2 , —C(═O)SR cc , —C(═S)SR cc , —P(═O)(R aa ) 2 , —P(═O)(NR cc ) 2 , C 1-10 alkyl, C 1-10 perhaloalkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 3-10 carbocyclyl, 3-14 membered heterocyclyl, C 6-14 aryl, and 5-14 membered heteroaryl, or two R cc groups attached to a nitrogen atom are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R dd groups;

each instance of R aa is, independently, selected from C 1-10 alkyl, C 1-10 perhaloalkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 3-10 carbocyclyl, 3-14 membered heterocyclyl, C 6-14 aryl, and 5-14 membered heteroaryl, or two R aa groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R dd groups;

each instance of R bb is, independently, selected from hydrogen, —OH, —OR aa , —N(R cc ) 2 , —CN, —C(═O)R aa , —C(═O)N(R cc ) 2 , —CO 2 R aa , —SO 2 R aa , —C(═NR cc )OR aa , —C(═NR cc )N(R cc ) 2 , —SO 2 N(R cc ) 2 , —SO 2 R cc , —SO 2 OR cc , —SOR aa , —C(═S)N(R cc ) 2 , —C(═O)SR cc , —C(═S)SR cc , —P(═O)(R aa ) 2 , —P(═O) 2 N(R cc ) 2 , C 1-10 alkyl, C 1-10 perhaloalkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 3-10 carbocyclyl, 3-14 membered heterocyclyl, C 6-14 aryl, and 5-14 membered heteroaryl, or two R bb groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R dd groups;

each instance of R cc is, independently, selected from hydrogen, C 1-10 alkyl, C 1-10 perhaloalkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 3-10 carbocyclyl, 3-14 membered heterocyclyl, C 6-14 aryl, and 5-14 membered heteroaryl, or two R cc groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R dd groups;

each instance of R dd is, independently, selected from halogen, —CN, —NO 2 , —N 3 , —SO 2 H, —SO 3 H, —OH, —OR ee , —ON(R ff ) 2 , —N(R ff ) 2 , —N(R ff ) 3 + X − , —N(OR ee )R ff , —SH, —SR ee , —SSR ee , —C(═O)R ee , —CO 2 H, —CO 2 R ee , —OC(═O)R ee , —OCO 2 R ee , —C(═O)N(R ff ) 2 , —OC(═O)N(R ff ) 2 , —NR ff C(═O)R ee , —NR ff CO 2 R ee , —NR ff C(═O)N(R ff ) 2 , —C(═NR ff )OR ee , —OC(═NR ff )R ee , —OC(═NR ff )OR ee , —C(═NR ff )N(R ff ) 2 , —OC(═NR ff )N(R ff ) 2 , —NR ff C(═NR ff )N(R ff ) 2 , —NR ff SO 2 R ee , —SO 2 N(R ff ) 2 , —SO 2 R ee , —SO 2 OR ee , —OSO 2 R ee , —S(═O)R ee , —Si(R ee ) 3 , —OSi(R ee ) 3 , —C(═S)N(R ff ) 2 , —C(═O)SR ee , —C(═S)SR ee , —SC(═S)SR ee , —P(═O)(R ee ) 2 , —OP(═O)(R ee ) 2 , —OP(═O)(OR ee ) 2 , C 1-6 alkyl, C 1-6 perhaloalkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 3-10 carbocyclyl, 3-10 membered heterocyclyl, C 6-10 aryl, 5-10 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R gg groups, or two geminal R dd substituents can be joined to form ═O or ═S;

each instance of R ee is, independently, selected from C 1-6 alkyl, C 1-6 perhaloalkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 3-10 carbocyclyl, C 6-10 aryl, 3-10 membered heterocyclyl, and 3-10 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R gg groups;

each instance of R ff is, independently, selected from hydrogen, C 1-6 alkyl, C 1-6 perhaloalkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 3-10 carbocyclyl, 3-10 membered heterocyclyl, C 6-10 aryl and 5-10 membered heteroaryl, or two R ff groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R gg groups; and

each instance of R gg is, independently, halogen, —CN, —NO 2 , —N 3 , —SO 2 H, —SO 3 H, —OH, —OC 1-6 alkyl, —ON(C 1-6 alkyl) 2 , —N(C 1-6 alkyl) 2 , —N(C 1-6 alkyl) 3 + X − , —NH(C 1-6 alkyl) 2 + X − , —NH 2 (C 1-6 alkyl) + X − , —NH 3 + X − , —N(OC 1-6 alkyl)(C 1-6 alkyl), —N(OH)(C 1-6 alkyl), —NH(OH), —SH, —SC 1-6 alkyl, —SS(C 1-6 alkyl), —C(═O)(C 1-6 alkyl), —CO 2 H, —CO 2 (C 1-6 alkyl), —OC(═O)(C 1-6 alkyl), —OCO 2 (C 1-6 alkyl), —C(═O)NH 2 , —C(═O)N(C 1-6 alkyl) 2 , —OC(═O)NH(C 1-6 alkyl), —NHC(═O)(C 1-6 alkyl), —N(C 1-6 alkyl)C(═O)(C 1-6 alkyl), —NHCO 2 (C 1-6 alkyl), —NHC(═O)N(C 1-6 alkyl) 2 , —NHC(═O)NH(C 1-6 alkyl), —NHC(═O)NH 2 , —C(═NH)O(C 1-6 alkyl), —OC(═NH)(C 1-6 alkyl), —OC(═NH)OC 1-6 alkyl, —C(═NH)N(C 1-6 alkyl) 2 , —C(═NH)NH(C 1-6 alkyl), —C(═NH)NH 2 , —OC(═NH)N(C 1-6 alkyl) 2 , —OC(NH)NH(C 1-6 alkyl), —OC(NH)NH 2 , —NHC(NH)N(C 1-6 alkyl) 2 , —NHC(═NH)NH 2 , —NHSO 2 (C 1-6 alkyl), —SO 2 N(C 1-6 alkyl) 2 , —SO 2 NH(C 1-6 alkyl), —SO 2 NH 2 , —SO 2 C 1-6 alkyl, —SO 2 OC 1-6 alkyl, —OSO 2 C 1-6 alkyl, —SOC 1-6 alkyl, —Si(C 1-6 alkyl) 3 , —OSi(C 1-6 alkyl) 3 —C(═S)N(C 1-6 alkyl) 2 , C(═S)NH(C 1-6 alkyl), C(═S)NH 2 , —C(═O)S(C 1-6 alkyl), —C(═S)SC 1-6 alkyl, —SC(═S)SC 1-6 alkyl, —P(═O)(C 1-6 alkyl) 2 , —OP(═O)(C 1-6 alkyl) 2 , —OP(═O)(OC 1-6 alkyl) 2 , C 1-6 alkyl, C 1-6 perhaloalkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 3-10 carbocyclyl, C 6-10 aryl, 3-10 membered heterocyclyl, 5-10 membered heteroaryl, or two geminal R gg substituents can be joined to form ═O or ═S; wherein X is a counterion.

2. The method of claim 1 , wherein the cancer is breast cancer, esophageal cancer, bladder cancer, lymphoma, medulloblastoma, rectum adenocarcinoma, colon adenocarcinoma, gastric cancer, liver cancer, adenoid cystic carcinoma, lung adenocarcinoma, head and neck squamous cell carcinoma, brain cancer, hepatocellular carcinoma, renal cell carcinoma, oligodendroglioma, ovarian clear cell carcinoma, ovarian serous cystadenocarcinoma, hematopoietic cancer, lung cancer, prostate cancer, melanoma, or pancreatic cancer.

3. The method of claim 2 , wherein the cancer is breast cancer.

4. The method of claim 2 , wherein the cancer is bladder cancer.

5. The method of claim 2 , wherein the cancer is lymphoma.

6. The method of claim 2 , wherein the cancer is brain cancer.

7. The method of claim 1 , wherein the compound is of Formula (I-a):

or a pharmaceutically acceptable salt thereof.

8. The method of claim 1 , wherein the compound is of Formula (I-b):

or a pharmaceutically acceptable salt thereof.

9. The method of claim 1 , wherein the compound is of Formula (I′):

or a pharmaceutically acceptable salt thereof.

10. The method of claim 1 , wherein the compound is of Formula (I′-a):

or a pharmaceutically acceptable salt thereof.

11. The method of claim 1 , wherein the compound is of Formula (I′-b):

or a pharmaceutically acceptable salt thereof.

12. The method of claim 1 , wherein L is —C(O)N(R)—, or —OC(O)NH—.

13. The method of claim 1 , wherein the compound is of Formula (II):

or a pharmaceutically acceptable salt thereof.

14. The method of claim 13 , wherein the compound is of Formula (II-a):

or a pharmaceutically acceptable salt thereof.

15. The method of claim 13 , wherein the compound is of Formula (II-b):

or a pharmaceutically acceptable salt thereof.

16. The method of claim 1 , wherein R 1 is hydrogen.

17. The method of claim 1 , wherein n is 0, 1, or 2.

18. The method of claim 1 , wherein Ar is heteroaryl.

19. The method of claim 18 , wherein Ar is a 5- to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur.

20. The method of claim 19 , wherein Ar is pyridyl.

21. The method of claim 1 , wherein Ar is substituted with 1 or 2 R y groups.

22. The method of claim 21 , wherein Ar is substituted with one R y group.

23. The method of claim 1 , wherein the compound is of Formula (VI):

or a pharmaceutically acceptable salt thereof.

24. The method of claim 1 , wherein the compound is of Formula (VI-a):

or a pharmaceutically acceptable salt thereof.

25. The method of claim 1 , wherein the compound is of Formula (VI-b):

or a pharmaceutically acceptable salt thereof.

26. The method of claim 1 , wherein the compound is of Formula (IX):

or a pharmaceutically acceptable salt thereof.

27. The method of claim 1 , wherein the compound is of Formula (IX-a):

or a pharmaceutically acceptable salt thereof.

28. The method of claim 1 , wherein the compound is of Formula (IX-b):

or a pharmaceutically acceptable salt thereof.

29. The method of claim 1 , wherein the compound is of Formula (XV):

or a pharmaceutically acceptable salt thereof.

30. The method of claim 1 , wherein the compound is of Formula (XVII):

or a pharmaceutically acceptable salt thereof.

31. The method of claim 1 , wherein the compound is of Formula (XV-a):

or a pharmaceutically acceptable salt thereof.

32. The method of claim 1 , wherein the compound is of Formula (XVII-a):

or a pharmaceutically acceptable salt thereof.

33. The method of claim 1 , wherein at least one R y is —N(R B ) 2 .

34. The method of claim 33 , wherein at least one R y is —NHR B .

35. The method of claim 34 , wherein R B is optionally substituted heterocyclyl.

36. The method of claim 1 , wherein Ar is selected from the group consisting of:

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

and pharmaceutically acceptable salts thereof.

38. The method of claim 1 , wherein Ar is selected from the group consisting of:

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

and pharmaceutically acceptable salts thereof.