申请人:Hashihayata Takashi
公开号:US20080305081A1
公开(公告)日:2008-12-11
The present invention relates to a compound represented by Formula [I]:
or a pharmaceutically acceptable salt or ester thereof, wherein R
1
and R
2
, which may be the same or different, are each a hydrogen atom, a lower alkyl group, a cycloalkyl group, or the like; R
3
and R
4
, which may be the same or different, are each a hydrogen atom, a lower alkyl group, NR
a
R
b
, 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 R
5
is a hydrogen atom, a cyano group, a halogen atom, or a lower alkyl group.
本发明涉及由公式[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、带苯基的低碳基、4-至7-成员的脂环杂环基、带4-至7-成员的脂环杂环基的低碳基、5-或6-成员的芳香杂环基、带5-或6-成员的芳香杂环基的低碳基或类似物;R5是氢原子、氰基、卤素原子或低碳基。