Patent ID: 8093250

Claim:
A compound of formula I wherein R 1 represents an imidazolyl, pyrazolyl, 1,2,3-triazolyl or 1,2,4-triazolyl ring, which ring may be substituted by a methyl group, or also R 1 represents phenyl optionally substituted 1 to 3 times by substituents each independently selected from the group consisting of halogen, methyl, methoxy, trifluoromethyl and trifluoromethoxy; W represents a bond and R 2 represents hydrogen, halogen, alkyl, hydroxyalkyl, alkoxyalkyl, cycloalkyl, aryl or heteroaryl; or W represents —O— or —S— and R 2 represents alkyl, cycloalkyl, aryl or heterocyclyl; or W represents —NR 3 —, R 2 represents alkyl, hydroxyalkyl or alkoxyalkyl and R 3 represents hydrogen or alkyl; or W represents —C≡C— and R 2 represents hydroxyalkyl or alkoxyalkyl; or W represents —NR 3 — and R 2 and R 3 form, together with the nitrogen that carries them, a heterocyclic ring of 4 to 7 members wherein the members needed to complete said heterocyclic ring are each independently selected from —CH 2 — and —CHR x —, it being understood however that said heterocyclic ring does not contain more than one —CHR x — member, R x representing hydroxy, hydroxymethyl, alkoxymethyl or alkoxy; or also W represents —NR 3 — and R 2 and R 3 form, together with the nitrogen that carries them, an imidazolyl, pyrazolyl, 1,2,3-triazolyl or 1,2,4-triazolyl ring, which ring is optionally substituted by a methyl group; R a represents hydrogen or fluorine and R b represents hydrogen, or R a represents hydrogen and R b represents alkoxy; each of R 4 and R 5 represents independently hydrogen or methyl; R 6 represents alkoxy; and Y represents alkylene or phenylalkylene, and Z represents —OH, —COOH, cyano, tetrazolyl or —COOR 7 , R 7 representing alkyl; it being understood that: when R a represents fluorine then: i) R 1 represents phenyl optionally substituted once by fluorine, methyl, methoxy, trifluoromethyl or trifluoromethoxy, ii) W does not represent —O— or —S—, and iii) if W is a bond, then R 2 does not represent hydrogen; in free or salt form.