Patent ID: 7074831

Claim:
A compound of formula (I) wherein X is CH 2 , NH, O, S, CHâ•CH, Câ‰¡C, NHCH 2 or OCH 2 wherein the nitrogen or oxygen atom is bound to ring A; CH 2 O or CH 2 S wherein the oxygen or sulphur atom is bound to ring B; Y is hydrogen, straight or branched C 1 â€“C 4 alkyl or a pharmaceutically acceptable inorganic cation; R 1 is ethyl or cyclopropyl; R 2 and R 3 are the same or different and represent hydrogen, straight or branched C 1 â€“C 4 , alkylthio, NHR 4 , NR 4 R 5 , trifluoromethyl, trifluoromethoxy, NHCOR 6 , phenyl, phenoxy, phenylthio or phenylamino; wherein the phenyl moiety optionally is monosubstituted with fluoro; R 4 and R 5 independently are hydrogen or straight or branched C 1 â€“C 4 alkyl; or R 4 and R 5 together with the nitrogen to which they are bound, form a 5- or 6-membered ring Z is CH 2 , O, NH or NCH 3 ; and R 6 is C 1 â€“C 3 alkyl, phenylamino, or phenyl optionally mono-substituted with C 1 â€“C 2 alkoxy or fluoro; with the proviso that R 2 and R 3 are not both hydrogen when X is OCH 2 .