Heteroaryl compounds and uses thereof

1. A compound of formula I-a:

or a pharmaceutically acceptable salt thereof, wherein:

Ring A is optionally substituted phenyl;

each R is independently hydrogen or an optionally substituted group selected from C 1-6 aliphatic, phenyl, a 3-8 membered saturated or partially unsaturated carbocyclic ring, a 4-7 membered heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur, or a 5-6 membered monocyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur; or

two R groups on the same nitrogen are taken together with the nitrogen atom to which they are attached to form a 4-7 membered heterocyclic ring having 0-2 additional heteroatoms independently selected from nitrogen, oxygen, or sulfur, or a 4-7 membered heteroaryl ring having 0-4 additional heteroatoms independently selected from nitrogen, oxygen, or sulfur;

R 1 is a warhead group L-Y; wherein R 1 is attached to an atom adjacent to the atom where T is attached, wherein:

R 1 is selected from

or

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one double bond and one or two methylene units of L are optionally and independently replaced by —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, —C(O)O—, cyclopropylene, —O—, —N(R)—, or —C(O)—; or

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one alkylidenyl double bond and at least one methylene unit of L is replaced by —C(O)—, —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—, and one additional methylene unit of L is optionally replaced by cyclopropylene, —O—, —N(R)—, or —C(O)—; or

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein one methylene unit of L is replaced by cyclopropylene and one additional methylene unit of L is replaced by —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—; or

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one triple bond and one or two methylene units of L are optionally and independently replaced by —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—; and

Y is hydrogen, C 1-6 aliphatic optionally substituted with oxo, halogen, NO 2 , or CN, or a 3-10 membered monocyclic or bicyclic, saturated, partially unsaturated, or aryl ring having 0-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, and wherein said ring is substituted with 1-4 R e groups; or

L is a covalent bond, —CH 2 —, —NH—, —C(O)—, —CH 2 NH—, —NHCH 2 —, —NHC(O)—, —NHC(O)CH 2 OC(O)—, —CH 2 NHC(O)—, —NHSO 2 —, —NHSO 2 CH 2 —, or —SO 2 NH—, and Y is selected from:

(i) C 1-6 alkyl substituted with oxo, halogen, NO 2 , or CN; or

(ii) C 2-6 alkenyl substituted with oxo, halogen, NO 2 , or CN; or

(iii) C 2-6 alkynyl optionally substituted with oxo, halogen, NO 2 , or CN; or

(iv) a saturated 3-4 membered heterocyclic ring having 1 heteroatom selected from oxygen or nitrogen wherein said ring is substituted with 1-2 R e groups; or

(v) a saturated 5-6 membered heterocyclic ring having 1-2 heteroatom selected from oxygen or nitrogen wherein said ring is substituted with 1-4 R e groups; or

(vi)

or

(vii) a saturated 3-6 membered carbocyclic ring, wherein said ring is substituted with 1-4 R e groups; or

(viii) a partially unsaturated 3-6 membered monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-4 R e groups; or

(ix) a partially unsaturated 3-6 membered carbocyclic ring, wherein said ring is substituted with 1-4 R e groups; or

(x)

or

(xi) a partially unsaturated 4-6 membered heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-4 R e groups; or

(xii)

or

(xiii) a 6-membered aromatic ring having 0-2 nitrogens wherein said ring is substituted with 1-4 R e groups; or

(xiv)

or

(xv) a 5-membered heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-3 R e groups; or

(xvi)

or

(xvii) an 8-10 membered bicyclic, saturated, partially unsaturated, or aryl ring having 0-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-4 R e groups; or

L is a covalent bond, —C(O)—, —N(R)C(O)—, or a bivalent C 1-8 saturated or unsaturated, straight or branched, hydrocarbon chain; and Y is selected from:

(i) C 1-6 alkyl substituted with oxo, halogen, NO 2 , or CN; or

(ii) C 2-6 alkenyl optionally substituted with oxo, halogen, NO 2 , or CN; or

(iii) C 2-6 alkynyl optionally substituted with oxo, halogen, NO 2 , or CN; or

(iv) a saturated 3-4 membered heterocyclic ring having 1 heteroatom selected from oxygen or nitrogen wherein said ring is substituted with 1-2 R e groups; or

(v) a saturated 5-6 membered heterocyclic ring having 1-2 heteroatom selected from oxygen or nitrogen wherein said ring is substituted with 1-4 R e groups; or

(vi)

or

(vii) a saturated 3-6 membered carbocyclic ring, wherein said ring is substituted with 1-4 R e groups; or

(viii) a partially unsaturated 3-6 membered monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-4 R e groups; or

(ix) a partially unsaturated 3-6 membered carbocyclic ring, wherein said ring is substituted with 1-4 R e groups; or

(x)

or

(xi) a partially unsaturated 4-6 membered heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-4 R e groups; or

(xii)

or

(xiii) a 6-membered aromatic ring having 0-2 nitrogens wherein said ring is substituted with 1-4 R e groups; or

(xiv)

or

(xv) a 5-membered heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-3 R e groups; or

(xvi)

or

(xvii) an 8-10 membered bicyclic, saturated, partially unsaturated, or aryl ring having 0-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein said ring is substituted with 1-4 R e groups;

each R e is independently selected from -Q-Z, oxo, NO 2 , halogen, CN, C 1-6 aliphatic optionally substituted with oxo, halogen, NO 2 , or CN, or a suitable leaving group selected from alkoxy, sulphonyloxy, optionally substituted alkylsulphonyloxy, optionally substituted alkenylsulfonyloxy, optionally substituted arylsulfonyloxy, acyl, or diazonium, wherein:

Q is a bivalent C 1-6 saturated or unsaturated, straight or branched, hydrocarbon chain, wherein one or two methylene units of Q are optionally and independently replaced by —N(R)—, —S—, —O—, —C(O)—, —OC(O)—, —C(O)O—, —SO—, —SO 2 —, —N(R)C(O)—, —C(O)N(R)—, —N(R)SO 2 —, or —SO 2 N(R)—; and

each Z is independently hydrogen or C 1-6 aliphatic substituted with oxo, halogen, NO 2 , or CN;

each R 2 is independently —R, halogen, -haloalkyl, —OR, —SR, —CN, —NO 2 , —SO 2 R, —SOR, —C(O)R, —CO 2 R, —C(O)N(R) 2 , —NRC(O)R, —NRC(O)N(R) 2 , —NRSO 2 R, or —N(R) 2 ;

R 3 is hydrogen, C 2-6 alkenyl, —W-Cy, or C 1-6 alkyl, wherein the C 1-6 alkyl is optionally substituted with 1-3 groups independently selected from halogen, —CN, oxo, —OR′, or —C(O)O(C 1-6 alkyl);

W is absent or is a bivalent C 1-3 alkylene chain optionally substituted with one or more R″ and wherein one methylene unit of W is optionally replaced with —O—, —S—, or —NR′—;

each R′ is independently hydrogen or C 1-6 alkyl;

each R″ is independently halogen or C 1-6 alkyl, wherein the C 1-6 alkyl is optionally substituted with 1-3 groups independently selected from halogen, —CN, oxo, or —OR′;

Cy is phenyl, C 3-7 cycloalkyl, or a 3-7 membered monocyclic or 5-10 membered bicyclic saturated, partially unsaturated, or heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, wherein Cy is optionally substituted with 1-3 R x ;

each R x is independently H, —CN, oxo, —NH 2 , C 1-6 alkyl, halogen, —OR′, —N(R′) 2 , —NHC(O)(C 1-6 alkyl), —C(O)N(R′) 2 , —C(O)O(C 1-6 alkyl), —NHSO 2 (C 1-6 alkyl), or —SO 2 N(R′) 2 ;

R 4 is ethyl, phenyl, cyclohexyl,

each of R 5 and R 5′ is independently —R, halogen, —OR, —SR, —CN, —NO 2 , —SO 2 R, —SOR, —C(O)R, —CO 2 R, —C(O)N(R) 2 , —NRC(O)R, —NRC(O)N(R) 2 , —NRSO 2 R, or —N(R) 2 ;

R a is hydrogen or an optionally substituted C 1-6 aliphatic group;

T is a covalent bond or a bivalent straight or branched, saturated or unsaturated C 1-6 hydrocarbon chain wherein one or more methylene units are optionally replaced by —O—, —S—, —N(R)—, —C(O)—, —OC(O)—, —C(O)O—, —C(O)N(R)—, —N(R)C(O)—, —N(R)C(O)N(R)—, —S(O)—, —SO 2 —, —SO 2 N(R)—, —N(R)SO 2 —, or —N(R)SO 2 N(R)—; and

q is 0-6.

2. The compound according to claim 1 , wherein Ring A is

3. The compound according to claim 2 , wherein each R 2 is independently —CH 3 , —Cl, —F, —CF 3 , or —OMe; or is selected from

4. The compound according to claim 1 , wherein Ring A is selected from:

5. The compound according to claim 1 , wherein R 3 is

6. The compound according to claim 1 , wherein each of R 5 and R 5′ is independently H, or -Me.

7. The compound according to claim 1 , wherein T is a covalent bond.

8. The compound according to claim 1 , wherein the compound is a compound of one of the following formulae:

or a pharmaceutically acceptable salt thereof.

9. The compound according to claim 1 , wherein the compound is selected from:

or a pharmaceutically acceptable salt thereof.

10. The compound according to claim 1 , wherein:

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one double bond and one or two methylene units of L are optionally and independently replaced by —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, —C(O)O—, cyclopropylene, —O—, —N(R)—, or —C(O)—.

11. The compound according to claim 10 , wherein:

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one double bond and at least one methylene unit of L is replaced by —C(O)—, —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—, and one additional methylene unit of L is optionally replaced by cyclopropylene, —O—, —N(R)—, or —C(O)—; and

Y is hydrogen or C 1-6 aliphatic optionally substituted with oxo, halogen, NO 2 , or CN.

12. The compound according to claim 11 , wherein L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one double bond and at least one methylene unit of L is replaced by —C(O)—, and one additional methylene unit of L is optionally replaced by cyclopropylene, —O—, —N(R)—, or —C(O)—.

13. The compound according to claim 11 , wherein L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one double bond and at least one methylene unit of L is replaced by —OC(O)—.

14. The compound according to claim 11 , wherein L is —NRC(O)CH═CH—, —NRC(O)CH═CHCH 2 N(CH 3 )—, —NRC(O)CH═CHCH 2 O—, —CH 2 NRC(O)CH═CH—, —NRSO 2 CH═CH—, —NRSO 2 CH═CHCH 2 —, or —NRC(O)C(═CH 2 )CH 2 —; wherein the R group of L is H or optionally substituted C 1-6 aliphatic; and Y is hydrogen or C 1-6 aliphatic optionally substituted with oxo, halogen, NO 2 , or CN.

15. The compound according to claim 14 , wherein L is —NHC(O)CH═CH—, —NHC(O)CH═CHCH 2 N(CH 3 )—, —NHC(O)CH═CHCH 2 O—, —CH 2 NHC(O)CH═CH—, —NHSO 2 CH═CH—, —NHSO 2 CH═CHCH 2 —, or —NHC(O)C(═CH 2 )CH 2 —.

16. The compound according to claim 1 , wherein L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one alkylidenyl double bond and at least one methylene unit of L is replaced by —C(O)—, —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—, and one additional methylene unit of L is optionally replaced by cyclopropylene, —O—, —N(R)—, or —C(O)—.

17. The compound according to claim 1 , wherein:

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein L has at least one triple bond and one or two methylene units of L are optionally and independently replaced by —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—.

18. The compound according to claim 17 , wherein Y is hydrogen or C 1-6 aliphatic optionally substituted with oxo, halogen, NO 2 , or CN.

19. The compound according to claim 18 , wherein L is —C≡C—, —NHC(O)C≡CCH 2 CH 2 —, —CH 2 —C≡C—CH 2 —, or —CH 2 OC(═O)C≡C—.

20. The compound according to claim 1 , wherein:

L is a bivalent C 2-8 straight or branched, hydrocarbon chain wherein one methylene unit of L is replaced by cyclopropylene and one additional methylene unit of L is replaced by —NRC(O)—, —C(O)NR—, —N(R)SO 2 —, —SO 2 N(R)—, —S—, —S(O)—, —SO 2 —, —OC(O)—, or —C(O)O—.

21. The compound according to claim 1 , wherein:

L is a covalent bond, —C(O)—, —N(R)C(O)—, or a bivalent C 1-8 saturated or unsaturated, straight or branched, hydrocarbon chain.

22. The compound according to claim 1 , wherein L is a covalent bond, —CH 2 —, —NH—, —C(O)—, —CH 2 NH—, —NHCH 2 —, —NHC(O)—, —NHC(O)CH 2 OC(O)—, —CH 2 NHC(O)—, —NHSO 2 —, —NHSO 2 CH 2 —, or —SO 2 NH—.

23. The compound according to claim 22 , wherein L is a covalent bond.

24. The compound according to claim 1 , wherein Y is selected from:

wherein each R e is independently selected from halogen.

25. The compound according to claim 1 , wherein R 1 is selected from:

wherein each R e is independently a suitable leaving group, NO 2 , CN, or oxo.

26. The compound of claim 1 , wherein R 1 is selected from:

27. A composition comprising a compound according to claim 1 , and a pharmaceutically acceptable adjuvant, carrier, or vehicle.

28. A method for inhibiting FGFR4, or a mutant thereof, activity in a patient or in a biological sample comprising the step of administering to said patient or contacting said biological sample with a compound according to claim 1 .

29. A method for treating a FGFR4-mediated disorder in a patient in need thereof, comprising the step of administering to said patient a compound according to claim 1 .

30. A method for inhibiting FGFR4, or a mutant thereof, activity in a patient or in a biological sample comprising the step of administering to said patient or contacting said biological sample with a compound according to claim 9 .

31. A method for treating a FGFR4-mediated disorder in a patient in need thereof, comprising the step of administering to said patient a compound according to claim 9 .