Human plasma kallikrein inhibitors

Patent metadata

Field	Value
Publication number	US-10125102-B2
Application number	US-201515123059-A
Country	US
Kind code	B2
Filing date	Mar 9, 2015
Priority date	Mar 7, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

Disclosed are compounds of formula I

as described herein, and pharmaceutically acceptable salts thereof. The compounds are inhibitors of plasma kallikrein. Also disclosed are pharmaceutical compositions comprising at least one such compound, and methods involving use of the compounds and compositions in the treatment and prevention of diseases and conditions characterized by unwanted plasma kallikrein activity.

First claim

What is claimed is:

1. A compound, or a pharmaceutically acceptable salt thereof, represented by formula II:

wherein:
X represents CH, C(OH), C(O(C 1 -C 6 )alkyl), —C(NH 2 ), —C(NR a R b ), —C(N 3 ), —C(CN), —C(NO 2 ), —C(S(O) n R a ), —C[—C(═O)R c ], —C[—C(═O)R c ], —C[—C(═O)NR c R d ], —C[—C(═O)SR c ], —C[—S(O)R c ], —C[—S(O) 2 R c ], —C[S(O)(OR c )], —C[—S(O) 2 (OR c )], —C[—SO 2 NR c R d ], —C(halogen), —C[(C 1 -C 5 )alkyl], —C[(C 4 -C 8 )carbocyclyl], —C[(C 1 -C 8 )substituted alkyl], —C[(C 2 -C 8 )alkenyl], —C[(C 2 -C 8 )substituted alkenyl], —C[(C 2 -C 8 )alkynyl], —C[(C 2 -C 8 )substituted alkynyl], —C[aryl(C 1 -C 8 )alkyl], C(O)N, CH 2 N, N, C(O), P(O), —O—, S(O)N, or S(O) 2 N;
provided that:
if X represents CH, then —Y—R 4 represents —H or —OH, or both Y and R 4 are present;
if X represents C(OH), C(O(C 1 -C 6 )alkyl), —C(NH 2 ), —C(NR a R b ), —C(N 3 ), —C(CN), —C(NO 2 ), —C(S(O) n R a ), —C[—C(═O)R c ], —C[—C(═O)R c ], —C[—C(═O)NR c R d ], —C[—C(═O)SR c ], —C[—S(O)R c ], —C[—S(O) 2 R c ], —C[S(O)(OR c )], —C[—S(O) 2 (OR c )], —C[—SO 2 NR c R d ], —C(halogen), —C[(C 1 -C 8 )alkyl], —C[(C 4 -C 8 )carbocyclyl], —C[(C 1 -C 8 )substituted alkyl], —C[(C 2 -C 8 )alkenyl], —C[(C 2 -C 8 )substituted alkenyl], —C[(C 2 -C 8 )alkynyl], —C[(C 2 -C 8 )substituted alkynyl], or —C[aryl(C 1 -C 8 )alkyl], then —Y—R 4 is present;
if X represents C(O)N, then —Y—R 4 represents H; or —Y—R 4 represents H, and —R 3 -R 3a represents H;
if X represents CH 2 N, then —Y—R 4 represents (C 1 -C 6 )alkyl;
if X represents N, then —Y—R 4 represents H, or both Y and R 4 are present; and
if X represents C(O) or —O—, then —Y—R 4 is absent;

Y—R 4 , when present, represents —((C 1 -C 6 )alkyl)-R 4 , —CH 2 C(O)—R 4 , —CH 2 NH—R 4 , —CH 2 N((C 1 -C 6 )alkyl)-R 4 , —CR a R b —R 4 , —NH—R 4 , —NHCH 2 -R 4 , —NHC(O)—R 4 , —N((C 1 -C 6 )alkyl)-R 4 , —N((C 1 -C 6 )alkyl)CH 2 -R 4 , —N((CH 2 ) 2 OH)—R 4 , —N[(C 3 -C 8 )cycloalkyl(C 1 -C 6 )alkyl]R 4 , -heterocyclyl-R 4 , —OR 4 , —OCH 2 -R 4 , —OC(O)—R 4 , —OC(O)NR a R b , —SCH 2 R 4 , or —SR 4 , wherein the (C 1 -C 6 )alkyl moiety of —((C 1 -C 6 )alkyl)-R 4 is optionally substituted;
Z is absent or represents one or more substituents independently selected from the group consisting of halo, hydroxy, (C 1 -C 6 )alkyl, —CF 3 , —OCF 3 , (C 1 -C 6 )alkoxy, aryl, aryloxy, amino, amino(C 1 -C 6 )alkyl, —C(O)NH 2 , cyano, —NHC(O)(C 1 -C 6 )alkyl, —SO 2 (C 1 -C 6 )alkyl, —SO 2 NH 2 , (C 3 -C 8 )cycloalkyl, (CH 2 ) r OR a , NO 2 , (CH 2 ) r NR a R b , (CH 2 ) r C(O)R a , NR a C(O)R b , C(O)NR c R d , NR a C(O)NR c R d , —C(═NR a )NR c R d , NHC(═NR a )NR c R d , NR a R b , SO 2 NR c R d , NR a SO 2 NR c R d , NR a SO 2 —(C 1 -C 6 )alkyl, NR a SO 2 R a , S(O) p R a , (CF 2 ) r CF 3 , NHCH 2 R a , OCH 2 R a , SCH 2 R a , NH(CH 2 ) 2 (CH 2 ) r R a , O(CH 2 ) 2 (CH 2 ) r R a , and S(CH 2 ) 2 (CH 2 ) r R a ; or alternatively Z is a 5- or 6-membered aromatic heterocycle containing from 1 to 4 heteroatoms selected from the group consisting of N, O, and S;
R 1c represents halo, amino(C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, cyano, —C(═NH)NH 2 , —CONR a R b , —(C 1 -C 6 )alkylCONR a R b , —SO 2 CH 3 , formyl, acyl, —NH 2 , —C(═NH)NH(OH), —C(═NH)NH(C(O)O—(C 1 -C 6 )alkyl), —C(═NH)NH(C(O)O—(C 1 -C 6 )haloalkyl), —C(═NH)NH(C(O)S—(C 1 -C 6 )alkyl), —C(═NH)NH(C(O)(OCH(C 1 -C 6 )alkyl)OC(O)(C 1 -C 6 )alkyl), optionally substituted aryl, or optionally substituted heteroaryl;
R 2 represents halo, (C 1 -C 6 )alkyl, (C 3 -C 8 )cycloalkyl, (C 1 -C 6 )fluoroalkyl, —OCH 3 , —Si(CH 3 ) 3 , —CONH 2 , —C(O)OH, cyano, or phenyl;
R 3 , when present, represents —NH—, —O—, optionally substituted aryl, heteroaryl, phenyl, carbocyclyl, or heterocyclyl;
R 3a is absent or represents one or more substituents independently selected from the group consisting of halo, hydroxy, (C 1 -C 6 )alkyl, —CF 3 , —OCF 3 , (C 1 -C 6 )alkoxy, aryl, aryloxy, amino, amino(C 1 -C 6 )alkyl, —C(O)NH 2 , cyano, —NHC(O)(C 1 -C 6 )alkyl, —SO 2 (C 1 -C 6 )alkyl, —SO 2 NH 2 , (C 3 -C 8 )cycloalkyl, (CH 2 ) r OR a , NO 2 , (CH 2 ) r NR a R b , (CH 2 ) r C(O)R a , NR a C(O)R b , C(O)NR c R d , NR a C(O)NR c R d , —C(═NR a )NR c R d , NHC(═NR a )NR c R d , NR a R b , SO 2 NR c R d , NR a SO 2 NR c R d , NR a SO 2 —(C 1 -C 6 )alkyl, NR a SO 2 R a , S(O) p R a , (CF 2 ) r CF 3 , NHCH 2 R a , OCH 2 R a , SCH 2 R a , NH(CH 2 ) 2 (CH 2 ) r R a , O(CH 2 ) 2 (CH 2 ) r R a , or S(CH 2 ) 2 (CH 2 ) r R a ; or alternatively R 3a is a 5- or 6-membered aromatic heterocycle containing from 1 to 4 heteroatoms selected from the group consisting of N, O, and S;
R 4 represents hydrogen, hydroxy, optionally substituted (C 1 -C 6 )alkyl, optionally substituted (C 3 -C 8 )cycloalkyl, heterocyclyl(C 1 -C 6 )alkyl, (C 3 -C 8 )cycloalkyl(C 1 -C 6 )alkyl, —CH 2 OH, —CH((C 1 -C 6 )alkyl)OH, —CH(NH 2 )CH((C 1 -C 6 )alkyl) 2 , optionally substituted aryl, optionally substituted aryl(C 1 -C 6 )alkyl, heteroaryl, optionally substituted heteroaryl(C 1 -C 6 )alkyl, —CH 2 S(C 1 -C 6 )alkyl, amino, or cyano; or —(CR a R b ) r (CR a R b ) p — fused to the 4-position of the ring bearing Z to form a 5- to 7-membered heterocyclic ring with optional substituents; or, when R 3 is phenyl, can represent —NR a — fused to the position ortho to X on that phenyl;
each R a and R b is independently H, (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, aryl(C 1 -C 8 )alkyl, (C 3 -C 8 )carbocyclyl, —C(═O)R c , —C(═O)OR c , —C(═O)NR c R d , —C(═O)SR c , —S(O)R c , —S(O) 2 R c , —S(O)(OR c ), or —SO 2 NR c R d ;
each R c and R d is independently H, (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, (C 4 -C 8 ) carbocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)(C 1 -C 8 )alkyl, —S(O) n (C 1 -C 8 )alkyl, or aryl(C 1 -C 8 )alkyl; or when R c and R d are bonded to a common nitrogen atom, then they may form a 3- to 7-membered heterocyclic ring wherein optionally a carbon atom of said heterocyclic ring may be replaced with —O—, —S— or —NR a —;

can represent

n is 2 or 3;
r is independently for each occurrence 0, 1, 2, or 3;
p is independently for each occurrence 0, 1, or 2; and
the stereochemical configuration at any chiral center is R, S, or a mixture of R and S.

2. The compound of claim 1 , wherein X represents CH, and both Y and R 4 are present.

3. The compound of claim 1 , wherein R 3 represents phenylene-R 3a .

4. The compound of claim 1 , wherein —R 3 -R 3a represents

5. The compound of claim 1 , wherein —R 3 -R 3a represents

6. The compound of claim 1 , wherein —R 3 -R 3a represents

7. The compound of claim 1 , wherein R 4 is cyclopropyl.

8. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, represented by formula III:

wherein:
X represents CH, C(OH), C(O(C 1 -C 6 )alkyl), C(O)N, CH 2 N, N, C(O), or —O—;
Y—R 4 , when present, represents —((C 1 -C 6 )alkyl)-R 4 , —CH 2 C(O)—R 4 , —CH 2 NH—R 4 , —CH 2 N((C 1 -C 6 )alkyl)-R 4 , —CR a R b —R 4 , —NH—R 4 , —NHCH 2 -R 4 , —NHC(O)—R

Assignees

• Biocryst Pharm Inc

Inventors

• Kotian Pravin L
• Babu Yarlagadda S
• Wu Minwan
• Chintareddy Venkat R
• Kumar V Satish
• Zhang Weihe

Classifications

• A61P7/00

  Drugs for disorders of the blood or the extracellular fluid · CPC title

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• A61P7/10

  Antioedematous agents; Diuretics · CPC title

• A61P9/10

  for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis · CPC title

• A61P9/12

  Antihypertensives · CPC title