Patent ID: 6699888
Filing Date: 2004-03-02
Classification: A61P,C07D

Abstract:
A compound of the formula (I): or a pharmaceutically acceptable salt thereof, wherein R1 is selected from1) hydrogen atom, or 2) a C1-6 alkyl group which may be optionally substituted with carboxyl group or a C1-6 alkoxycarbonyl group; R2a and R2b are independently hydrogen atom, hydroxyl group, cyano group, a C1-6 alkythio group which may be optionally substituted with 1 to 3 halogen atoms, a C1-6 alkylsulfinyl group which may be optionally substituted with 1 to 3 halogen atoms, a C1-6 alkylsulfonyl group which may be optionally substituted with 1 to 3 halogen atoms, or a C1-6 alkoxy group which may be optionally substituted with 1 to 3 halogen atoms; R3 is a C1-6 alkyl group; and R4 and R5 are independently a halogen atom.