The present invention is to provide a piperidine compound represented by the formula [I]:
wherein Ring A is an optionally substituted benzene ring, Ring B is an optionally substituted benzene ring,
R
1
is hydrogen atom or a substituent for amino group,
R
2
is hydrogen atom, an optionally substituted hydroxyl group, an optionally substituted amino group, an optionally substituted alkyl group, a substituted carbonyl group or a halogen atom,
Z is oxygen atom or —N(R
3
)—,
R
3
is hydrogen atom or an optionally substituted alkyl group,
R
4a
and R
4b
may be the same or different, and each is hydrogen atom or an optionally substituted alkyl group, or may be bonded to each other at the both ends to form an alkylene group, or a pharmaceutically acceptable salt thereof, which has an excellent tachykinin receptor antagonistic action.
本发明提供了一种由公式[I]表示的
哌啶化合物:其中,环A是可选取代的
苯环,环B是可选取代的
苯环,R1是
氢原子或
氨基取代基,R2是
氢原子、可选取代的羟基、可选取代的
氨基、可选取代的烷基、取代的羰基或卤原子,Z是
氧原子或-N(R3)-,R3是
氢原子或可选取代的烷基,R4a和R4b可以相同也可以不同,且每个都是
氢原子或可选取代的烷基,或者可以在两端结合形成烷基,或其药学上可接受的盐,具有优异的Tachykinin受体拮抗作用。