Patent ID: 6506797
Filing Date: 2003-01-14
Classification: A61K,A61P,C07C,C07D

Abstract:
A compound represented by formula (1), a pharmaceutically salt thereof or a hydrate thereof: wherein R1 is a lower alkyl group with 1 to 4 carbon atoms, a lower alkoxy group with 1 to 3 carbon atoms, a trifluoromethyl group, a trifluoromethoxy group, a substituted phenyl group, an unsubstituted phenyl group, a substituted phenoxy group, an unsubstituted phenoxy group, a substituted benzyloxy group, or an unsubstituted bezyloxy group; R2 is a lower alkyl group with 1 to 4 carbon atoms, a 2,2,2-trifluoroethyl group, a lower alkoxy group with 1 to 3 carbon atoms, a phenoxy group, a lower alkylthio group with 1 to 3 carbon atoms, a phenylthio group, or a benzylthio group, wherein if R2 is a lower alkyl group with 1 to 4 carbon atoms, or a 2,2,2-trifluoroethyl group then R3 is a hydrogen atom, or lower alkyl group with 1 to 4 carbon atoms; and if R2 is a lower alkoxy group with 1 to 3 carbon atoms, a phenoxy group, a lower alkylthio group with 1 to 3 carbon atoms, a phenylthio group, or a benzylthio group then R3 is a hydrogen atom; and R4 is a lower alkoxy group with 1 to 3 carbon atoms.