Patent ID: 7166616

Claim:
A compound of formula (Ib): wherein: is (i) a saturated 3- to 6-membered carbocycle, optionally substituted by one or more alkyl groups, (ii) indanyl or (iii) a saturated 4- to 6-membered heterocyclic ring; R 2 is hydrogen, halogen, lower alkyl or lower alkoxy; R 3 is an optionally substituted aryl or optionally substituted heteroaryl; R 6 is a direct bond or a straight or branched alkylene chain, alkenylene chain or alkynylene chain; L 2 is an alkylene linkage; Y is carboxy; X is O; and R 12 is hydrogen or an aryl group substituent; and the corresponding N-oxides and ester prodrugs of such compounds; and pharmaceutically acceptable salts and solvates of such compounds and their N-oxides and ester prodrugs.