申请人:Banyu Pharmaceutical Co. Ltd
公开号:US07977336B2
公开(公告)日:2011-07-12
The present invention relates to a compound represented by Formula [I]:
or a pharmaceutically acceptable salt or ester thereof, wherein R1 and R2, which may be the same or different, are each a hydrogen atom, a lower alkyl group, a cycloalkyl group, or the like; R3 and R4, which may be the same or different, are each a hydrogen atom, a lower alkyl group, NRaRb, a phenyl group, a lower alkyl group substituted with a phenyl group, a 4-to 7-membered aliphatic heterocyclic group, a lower alkyl group substituted with a 4- to 7-membered aliphatic heterocyclic group, a 5-or 6-membered aromatic heterocyclic group, a lower alkyl group substituted with a 5-or 6-membered aromatic heterocyclic group, or the like; and R5 is a hydrogen atom, a cyano group, a halogen atom, or a lower alkyl group.
本发明涉及一种由式[I]表示的化合物,或其药学上可接受的盐或酯,其中R1和R2,可以相同也可以不同,分别是氢原子,低碳基,环烷基或类似物;R3和R4,可以相同也可以不同,分别是氢原子,低碳基,NRaRb,苯基,带有苯基的低碳基,4-至7-成员脂环杂环基,带有4-至7-成员脂环杂环基的低碳基,5-或6-成员芳香杂环基,带有5-或6-成员芳香杂环基的低碳基或类似物;而R5是氢原子,氰基,卤素原子或低碳基。