Patent ID: 7674906

Claim:
A compound of formula (I) or a pharmaceutically or veterinarily acceptable salt thereof: wherein Z represents a carboxylic acid group (—COOH) or an ester thereof; R 1 and R 3 independently represent H; F; Cl; Br; —NO 2 ; —CN; C 1 -C 6 alkyl optionally substituted by F or Cl; or C 1 -C 6 alkoxy optionally substituted by F; R 2 represents optionally substituted C 7 cycloalkyl, substituted C 3 -C 7 cycloalkyl or optionally substituted phenyl; Y represents N-oxide or —N(R 5 )— wherein R 5 represents H or C 1 -C 6 alkyl; and X represents a bond or a group selected from; a divalent C 1 -C 6 alkylene radical, NHC(O)C 1-5 alkyl or NHC(O)CH 2 —O—CH 2 .