Patent ID: 8389547

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof; wherein: p is 0 or 1; q is 0, 1, 2 or 3; V represents a carbon atom whose remaining valencies are satisfied via bonding to H, R 2 or X-Z or to any combination thereof; W represents a carbon atom whose remaining valencies are satisfied via bonding to H, R 2 or X-Z or to any combination thereof; X represents a bond or C(R 1 ) 2 or CH 2 C(R 1 ) 2 ; Y represents a bond or CH 2 or CH 2 CH 2 ; Z represents CO 2 H or a tetrazole ring; each R 1 independently represents H or a non-aromatic hydrocarbon group of up to 6 carbon atoms; or the two R 1 groups complete a C 3-6 alicyclic group; R 2 represents a non-aromatic hydrocarbon group of up to 6 carbon atoms; R 3 and R 4 each represents H, or when V and W each represents a carbon atom, R 3 and R 4 may together represent a CH 2 CH 2 bridge; each R 5 independently represents halogen, C 1-6 alkyl bearing 0-3 fluorine substituents, C 1-6 alkoxy bearing 0-3 fluorine substituents, C 2-6 alkenyl or Si(C 1-4 alkyl) 3 ; and R 6 and R 7 independently represent linear or branched hydrocarbon groups each containing up to 10 carbon atoms optionally bearing a substituent selected from perfluoroC 1-4 alkyl, C 3-6 alicyclic, hydroxyC 3-6 alicyclic, OH, C 1-4 alkoxy, phenyl or benzyloxy, where said C 1-4 alkoxy, phenyl and benzyloxy substituents themselves bear 0-3 substituents selected from halogen, C 1-4 alkyl, C 1-4 alkoxy and perfluoroC 1-4 alkyl.