Patent ID: 8796467

Claim:
A compound of formula I in which A and B independently represent CH or N; R 1 represents aryl, heteroaryl, C 1-8 alkyl, C 3-7 cycloalkyl or —O—C 1-8 alkyl which latter five groups are optionally substituted with one or more substituents selected from halogen, —CN, C 1-3 alkyl and —O—C 1-3 alkyl; R 2 and R 3 independently represent —H, halogen, —CN, C 1-5 alkyl, C 3-5 cycloalkyl or —O—C 1-5 alkyl which latter three groups are optionally substituted with one or more fluorine atoms; X represents Ar 1 represents Ar 2 represents D represents S or O; R 4 and R 5 independently represent —H, halogen, —OH, —CN, —NH 2 , C 1-5 alkyl, phenyl, —NH—C 1-5 alkyl, —N(C 1-5 alkyl) 2 , —O—C 1-5 alkyl, —COO—C 1-5 alkyl, —CONH(C 1-5 alkyl), —CON(C 1-5 alkyl) 2 , —NHCONH—C 1-5 alkyl, —NHCON(C 1-5 alkyl) 2 or —NHCO—C 1-5 alkyl which latter eleven groups are optionally substituted with one or more substituents selected from halogen and —OH; R 6 represents —H or C 1-3 alkyl; or a physiologically acceptable salt thereof.