Patent ID: 8222418

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof; wherein: q is 0, 1, 2 or 3; V represents a carbon atom whose remaining valencies are satisfied via bonding to H or X—Z or to any combination thereof; W represents a carbon atom whose remaining valencies are satisfied via bonding to H 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 3 and R 4 each represents H; each R 5 independently represents halogen, C 1-6 alkyl bearing 0-3 fluorine substituents, C 1-6 alkoxy bearing 0-3 fluorine substituents, or C 2-6 alkenyl; and R 6 represents Het-A- where A represents a bond, CH 2 or 1,4-phenylene and Het represents a heterocyclic ring system of up to 10 ring atoms which optionally bears up to 3 substituents selected from halogen, C 1-4 alkyl, CF 3 , C 1-4 alkoxy and C 1-4 alkoxycarbonyl or which optionally bears a phenyl substituent which itself is optionally substituted with halogen, C 1-4 alkyl, C 1-4 alkoxy or C 1-4 alkoxycarbonyl; and R 7 represents a hydrocarbon group of up to 10 carbon atoms which optionally bears a CF 3 substituent.