Patent ID: 6635647
Filing Date: 2003-10-21
Classification: A61P,C07D

Abstract:
A compound of formula I wherein R is hydrogen or (C1-4)alkyl and A and B, independently, are groups of formula (a), (b), (c), (d) or (e) whereinX, X1 and X2, independently, are â€”CR1&boxH; or â€”N&boxH;Y is â€”Oâ€”, â€”Sâ€”, â€”CH&boxH;CHâ€” or â€”NHâ€”R1 and Râ€²1, independently, are hydrogen, (C1-4)alkyl or (C1-4)alkoxy, R2 is hydrogen, (C1-4)alkyl, (C1-4)alkoxy, (C1-4)alkoxycarbonyl) or halogen, and R3 and R4, independently, are halogen, nitro, cyano, trifluoromethyl, (C1-4)alkyl, (C1-4) alkoxy, (C1-4)alkoxycarbonyl or (C1-4)alkanoyl, in free base or acid addition salt form.