Patent ID: 8263587

Claim:
A compound of formula (I), wherein: -------- (dotted line) represents an optional bond; R 1 is: where: R 3 and R 4 are, independently of each other: hydrogen; hydroxyl; alkoxy; C 1 -C 4 alkyl; amino; or aryl; R 5 , R 6 and R 7 are, independently of each other: hydrogen; C 1 -C 4 alkyl; or aryl; n is 0, 1 or 2; and the arrows indicate the point of attachment of R 1 group; R 2 is: mono or bicyclic heteroaryl, containing one nitrogen and optionally another heteroatom selected from nitrogen, sulphur or oxygen; which may be unsubstituted or substituted with R 8 , wherein R 8 is: hydrogen; hydroxyl; alkoxy; C 1 -C 4 alkyl; halogen; amino; or aryl; and a stereoisomer, geometric isomer or pharmaceutically acceptable salt thereof.