Patent ID: 6800650
Filing Date: 2004-10-05
Classification: A61P,C07D

Abstract:
A compound of formula (I) whereinR1 is hydrogen or lower alkyl; R2 is heterocyclyl; heterocyclyl mono-, di-, or tri-substituted, independently, by lower alkyl, lower alkoxy, perfluoro-lower alkyl, amino or halogen; aryl; or aryl mono-, di-, or tri-substituted, independently, by halogen, lower alkyl, lower alkoxy, amino or perfluoro-lower alkyl; R3 and R4 together with the carbon atoms to which they are attached form: a phenyl ring which is optionally mono-, di- or tri-substituted, independently, by halogen, lower alkyl, perfluoro-lower alkyl or lower alkoxy; or a 5-, 6- or 7-membered saturated ring which optionally contains a heteroatom selected from O, N and S, and which saturated ring is optionally mono-, di- or tri-substituted, independently, by halogen, lower alkyl, perfluoro-lower alkyl or lower alkoxy, said saturated ring being ortho-fused to a 5- or 6-membered aromatic ring which optionally contains a heteroatom selected from O, N and S, and which aromatic ring is optionally mono-, di- or tri-substituted, independently, by halogen, lower alkyl, perfluoro-lower alkyl or lower alkoxy; or a pharmaceutically acceptable salt thereof.