Heteroaryl plasma kallikrein inhibitors
The present invention provides compounds and compositions thereof which are useful as inhibitors of plasma kallikrein and which exhibit desirable characteristics for the same.
1. A method of treating diabetic macular edema or hereditary angioedema comprising administering to a patient in need thereof a compound of Formula (II):
or a pharmaceutically acceptable salt thereof,
wherein:
Het A is selected from a 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclylene having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur, a 5- to 6-membered monocyclic heteroarylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, a 7- to 10-membered saturated or partially unsaturated bicyclic heterocyclylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, and a 7- to 10-membered bicyclic heteroarylene having 1-5 heteroatoms selected from oxygen, nitrogen, or sulfur, wherein Het A is substituted with 0-4 R A groups;
each R A is independently selected from halogen, —CN, —C(R)═N(R), —C(O)R, —C(O) 2 R, —C(O)N(R) 2 , —NO 2 , —N(R)—N(R) 2 , —N(R) 2 , —N(R)C(O)R, —N(R)C(O) 2 R, —N(R)C(O)N(R) 2 , —N(R)S(O) 2 R, —OR, —OC(O)R, —OC(O)N(R) 2 , —SR, —S(O)R, —S(O) 2 R, —S(O)N(R) 2 , —S(O) 2 N(R) 2 , or an optionally substituted group selected from C 1-6 aliphatic, phenyl, 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclyl, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur;
L is an optionally substituted C 1-6 hydrocarbon chain, wherein 1-3 methylene units are independently replaced with -Cy-, —C(R) 2 -, —O—, —NR—, —C(O)—, —S(O) 2 -, —C(O)NR—, —NRC(O)—, —S(O) 2 NR-, and —NRS(O) 2 —;
-Cy- is 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclylene, 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclylene having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur, or 5- to 6-membered heteroarylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur;
R′is selected from hydrogen, halogen, —OR, —NR 2 , —SR, and optionally substituted C 1-6 aliphatic; wherein R′ may be taken together with a monocyclic Het A to form an optionally substituted fused 7- to 10-membered saturated or partially unsaturated bicyclic heterocyclylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur;
R 1 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently selected from hydrogen, halogen, —CN, —C(R)═N(R), —C(O)R, —C(O) 2 R, —C(O)N(R) 2 , —NO 2 , —N(R)—N(R) 2 , —N(R) 2 , —N(R)C(O)R, —N(R)C(O) 2 R, —N(R)C(O)N(R) 2 , —N(R)S(O) 2 R, —OR, —OC(O)R, —OC(O)N(R) 2 , —SR, —S(O)R, —S(O) 2 R, —S(O)N(R) 2 , —S(O) 2 N(R) 2 , or an optionally substituted group selected from C 1-6 aliphatic, phenyl, 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclyl, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur;
each R is independently hydrogen or an optionally substituted group selected from C 1-6 aliphatic, phenyl, 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclyl, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur;
or two R groups on the same carbon or nitrogen are taken together with their intervening atoms to form a ring selected from 3- to 7-membered saturated or partially unsaturated monocyclic ring having 0-2 heteroatoms selected from oxygen, nitrogen, or sulfur, and 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur; and
n is 0 or 1.
2. The method according to claim 1 , wherein when L is —(CR 2 ) m NRC(O)- and m is 0 to 2, one of the following (a) or (b) applies:
(a) at least one of R 5 , R 6 , R 7 , and R 8 is CN; or
(b) R 1 is an optionally substituted saturated monocyclic heterocycle comprising 1-3 nitrogen atoms, with the proviso that the compound is not N-((7-chloroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(2-oxopyrrolidin-1-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-pyrazole-4-carboxamide, N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-morpholinoimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide, N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(2-oxopyrrolidin-1-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide, N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(2-oxooxazolidin-3-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide, or 4-(2-((4-(((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)carbamoyl)-1H-1,2,3-triazol-1-yl)methyl)-6-cyclopropylimidazo[1,2-a]pyridin-8-yl)morpholine-2-carboxylic acid.
3. The method according to claim 1 , wherein L is selected from the group consisting of —C(R) 2 NRC(O)-#, —C(R) 2 C(O)NRC(R) 2 -#, —C(R) 2 NRC(O)C(R) 2 -#, —C(R) 2 NRC(R) 2 -#, —C(R) 2 C(R) 2 NRC(R) 2 -#, —C(O)NRC(R) 2 -#, —C(R) 2 C(O)NR-#, —NRC(O)C(R) 2 -#, -CR 2 C(O)NRC(R) 2 -#, -SO 2 NRC(R) 2 -#, and —C(R) 2 NRSO 2 -#, wherein #represents the point of attachment to Het A .
4. The method according to claim 1 , wherein when L is —C(R) 2 NRC(O)-#or —C(R) 2 C(O)NR-#, one of the following (a) or (b) applies:
(a) at least one of R 5 , R 6 , R 7 , and R 8 is CN; or
(b) R 1 is an optionally substituted saturated monocyclic heterocycle comprising 1-3 nitrogen atoms, with the proviso that the compound is not N-((7-chloroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(2-oxopyrrolidin-1-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-pyrazole-4-carboxamide, N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-morpholinoimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide, N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(2-oxopyrrolidin-1-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide, N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(2-oxooxazolidin-3-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide, or 4-(2-((4-(((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)carbamoyl)-1H-1,2,3-triazol-1-yl)methyl)-6-cyclopropylimidazo[1,2-a]pyridin-8-yl)morpholine-2-carboxylic acid.
5. The method according to claim 1 , wherein Het A is a 5-membered monocyclic heteroarylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, wherein Het A is substituted with 0-2 R A groups.
6. The method according to claim 1 , wherein Het A is selected from:
wherein * represents to point of attachment to L.
7. The method according to claim 1 , wherein the compound has a structure of Formula (II-a) or Formula (II-b):
or a pharmaceutically acceptable salt thereof.
8. The method according to claim 1 , wherein a single instance of R A is C 1-6 aliphatic substituted with halogen.
9. The method according to claim 1 , wherein R 1 , R 3 , R 4 , R 5 , and R 6 are hydrogen.
10. The method according to claim 1 , wherein R 1 is an optionally substituted group selected from 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, sulfur, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur.
11. The method according to claim 1 , wherein R 1 is an optionally substituted C 1-6 aliphatic.
12. The method according to claim 1 , comprising administering to a patient in need thereof a compound of Formula (III):
or a pharmaceutically acceptable salt thereof,
wherein:
Het A is selected from a 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclylene having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur, a 5- to 6-membered monocyclic heteroarylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, a 7- to 10-membered saturated or partially unsaturated bicyclic heterocyclylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, and a 7- to 10-membered bicyclic heteroarylene having 1-5 heteroatoms selected from oxygen, nitrogen, or sulfur, wherein Het A is substituted with 0-4 R A groups;
each R A is independently selected from halogen, —CN, —C(R)═N(R), —C(O)R, —C(O) 2 R, —C(O)N(R) 2 , —NO 2 , —N(R)—N(R) 2 , —N(R) 2 , —N(R)C(O)R, —N(R)C(O) 2 R, —N(R)C(O)N(R) 2 , —N(R)S(O) 2 R, —OR, —OC(O)R, —OC(O)N(R) 2 , —SR, —S(O)R, —S(O) 2 R, —S(O)N(R) 2 , —S(O) 2 N(R) 2 , or an optionally substituted group selected from C 1-6 aliphatic, phenyl, 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclyl, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur;
L is an optionally substituted C 1-6 hydrocarbon chain, wherein 1-3 methylene units are independently replaced with -Cy-, —C(R) 2 -, —O—, —NR—, —C(O)—, —S(O) 2 -, —C(O)NR—, —NRC(O)-, —S(O) 2 NR-, and —NRS(O) 2 —;
-Cy- is 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclylene, 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclylene having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur, or 5- to 6-membered heteroarylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur;
R fus is fused with Het A to form a fused 7- to 10-membered saturated or partially unsaturated bicyclic heterocyclylene having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur;
R 1 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently selected from hydrogen, halogen, —CN, —C(R)═N(R), —C(O)R, —C(O) 2 R, —C(O)N(R) 2 , —NO 2 , —N(R)—N(R) 2 , —N(R) 2 , —N(R)C(O)R, —N(R)C(O) 2 R, —N(R)C(O)N(R) 2 , —N(R)S(O) 2 R, —OR, —OC(O)R, —OC(O)N(R) 2 , —SR, —S(O)R, —S(O) 2 R, —S(O)N(R) 2 , —S(O) 2 N(R) 2 , or an optionally substituted group selected from C 1-6 aliphatic, phenyl, 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclyl, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur; and
each R is independently hydrogen or an optionally substituted group selected from C 1-6 aliphatic, phenyl, 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur, 3- to 7-membered saturated or partially unsaturated monocyclic carbocyclyl, and 3- to 7-membered saturated or partially unsaturated monocyclic heterocyclyl having 1-2 heteroatoms selected from oxygen, nitrogen, or sulfur;
or two R groups on the same carbon or nitrogen are taken together with their intervening atoms to form a ring selected from 3- to 7-membered saturated or partially unsaturated monocyclic ring having 0-2 heteroatoms selected from oxygen, nitrogen, or sulfur, and 5- to 6-membered heteroaryl having 1-4 heteroatoms selected from oxygen, nitrogen, or sulfur.
13. The method according to claim 12 , wherein L is selected from the group consisting of —C(R) 2 NRC(O)-#, —C(R) 2 C(O)NRC(R) 2 -#, —C(R) 2 NRC(O)C(R) 2 -#, —C(R) 2 NRC(R) 2 -#, —C(R) 2 C(R) 2 NRC(R) 2 -#, —C(O)NRC(R) 2 -#, —C(R) 2 C(O)NR-#, —NRC(O)C(R) 2 -#, —CR 2 C(O)NRC(R) 2 -#, —SO 2 NRC(R) 2 -#, and —C(R) 2 NRSO 2 -#, wherein #represents the point of attachment to Het A .
14. The method according to claim 12 , wherein the compound has a structure of Formula (III-a) or Formula (III-b):
or a pharmaceutically acceptable salt thereof.
15. The method according to claim 12 , wherein substituents on an optionally substituted R 1 group are independently halogen, —(CH 2 ) 0-4 R ∘ , —(CH 2 ) 0-4 OR ∘ , or -(CH 2 ) 0-4 C(O)OR ∘ , wherein each R ∘ is independently hydrogen, C 1-6 aliphatic, or a 5-6 membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
16. The method according to claim 12 , wherein Het A is pyrazolediyl fused with R fus .
17. The method according to claim 12 , wherein Het A is triazolediyl fused with R fus .
18. The method according to claim 14 , wherein R 5 and R 6 are each independently halogen.
19. The method according to claim 1 , wherein the compound is: 2-(7-chloroimidazo[1,5-a]pyridin-1-yl)-N-((1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)acetamide (I-1), 1-(7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)-N-((1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)-2,2,2-trifluoroethan-1-amine (I-2), 7-chloro-N-((1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)-8-fluoroimidazo[1,5-a]pyridine-1-carboxamide (I-3), N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-pyrazole-4-sulfonamide (I-4), N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-sulfonamide (I-5), 7-chloro-N-((1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)-8-fluoroimidazo[1,5-a]pyridine-1-sulfonamide (I-6), 7-chloro-N-(1-(1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)ethyl)-8-fluoroimidazo[1,5-a]pyridine-1-sulfonamide (I-7), N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-5-(6-cyclopropylimidazo[1,2-a]pyridin-2-yl)-6,7-dihydro-5H-pyrrolo[1,2-a]imidazole-2-carboxamide (I-8), N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-5-(6-cyclopropylimidazo[1,2-a]pyridin-2-yl)-6,7-dihydro-5H-pyrrolo[1,2-a]imidazole-3-carboxamide (I-9), N-((7-cyanoimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-pyrazole-4-carboxamide (I-10), 1-(7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)-N-((1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)methanamine (I-11), N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-(1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)ethan-1-amine (I-12), 2-(7-chloroimidazo[1,5-a]pyridin-1-yl)-N-(1-(1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)ethyl)acetamide (I-13), methyl 2-((4-((((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)amino)methyl)-1H-1,2,3-triazol-1-yl)methyl)-6-cyclopropylimidazo[1,2-a]pyridine-8-carboxylate (I-14), 2-((4-((((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)amino)methyl)-1H-1,2,3-triazol-1-yl)methyl)-6-cyclopropylimidazo[1,2-a]pyridine-8-carboxylic acid (I-15), N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-(1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-pyrazol-4-yl)-2,2,2-trifluoroethan-1-amine (I-16), ethyl 3-(2-((4-((((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)amino)methyl)-1H-1,2,3-triazol-1-yl)methyl)-6-cyclopropylimidazo[1,2-a]pyridin-8-yl)propanoate (I-17a), 3-(2-((4-((((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)amino)methyl)-1H-1,2,3-triazol-1-yl)methyl)-6-cyclopropylimidazo[1,2-a]pyridin-8-yl)propanoic acid (I-17b), 1-(7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)-N-((1-((6-cyclopropyl-8-(4H-1,2,4-triazol-4-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)methanamine (I-18), 2-(7-chloroimidazo[1,5-a]pyridin-1-yl)-N-(1-(1-((6-cyclopropylimidazo[1,2-a]pyridin-2-yl)methyl)-1H-pyrazol-4-yl)-2,2,2-trifluoroethyl)acetamide (I-19), or N-((7-chloro-8-fluoroimidazo[1,5-a]pyridin-1-yl)methyl)-1-((6-cyclopropyl-8-(4-methylpiperazin-1-yl)imidazo[1,2-a]pyridin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxamide (I-20);
or a pharmaceutically acceptable salt thereof.