Patent ID: 9708306
Date: 2017-07-18
CPC Classifications: A61K,A61P,C07D

Claim:
1. A compound of general formula I and pharmaceutically acceptable salts thereof, wherein R in the formula I represents wherein a=0, 1, 2, 3, 4, 5 or 6; R (CH 2 ) n O(CH 2 ) m , phenyl, substituted phenyl, aromatic heterocycle or substituted aromatic heterocycle, where in b, c=0, 1, 2, 3, 4, 5 or 6; in (CH 2 ) n O(CH 2 ) m , n, m=1, 2, 3, 4, 5 or 6; R R phenyl, substituted phenyl, aromatic heterocycle or substituted aromatic heterocycle, where in b, c=0, 1, 2, 3, 4, 5 or 6; R R or (CH 2 ) n O(CH 2 ) m ; R R wherein the substituted phenyl is a phenyl which is substituted with one or more substituents selected from the group consisting of hydroxyl, C the aromatic heterocycle is a 5 to 7-membered aromatic cycle containing 1 to 4 heteroatoms, the heteroatoms are independently selected from the group consisting of O, S, and N; the substituted aromatic heterocycle is optionally substituted with one or more substituents selected from the group consisting of C