申请人:Astellas Pharma Inc.
公开号:US08173684B2
公开(公告)日:2012-05-08
A compound represented by the formula (I): wherein R1 is lower alkyl, cycloalkyl or aromatic hydrocarbon ring, each of which is optionally substituted with one or more substituents; R2 is hydrogen atom, halogen atom, lower alkyl, halo(lower)alkyl or lower alkoxy; and R3 is (1) a group represented by the formula: wherein R4 is lower alkyl, etc.; (2) a group represented by the formula: wherein R5 is lower alkyl, etc.; (3) a group represented by the formula: wherein R6 is lower alkyl, etc.; or (4) a group selected from halogen atom, carboxy, hydroxy and lower alkoxy, or a salt thereof.
化合物的化学式为(I):其中R1是较低的烷基、环烷基或芳香族碳氢环,每个都可以选择性地被一个或多个取代基取代;R2是氢原子、卤素原子、较低的烷基、卤代(较低)烷基或较低的烷氧基;R3是(1)由公式表示的基团:其中R4是较低的烷基等;(2)由公式表示的基团:其中R5是较低的烷基等;(3)由公式表示的基团:其中R6是较低的烷基等;或(4)从卤素原子、羧基、羟基和较低的烷氧基中选择的基团或其盐。