申请人:Ando Koji
公开号:US20050038060A1
公开(公告)日:2005-02-17
A compound of the formula (I) or a salt, prodrug or solvate thereof, wherein R
1
and R
2
groups are all hydrogen; A is a benzofuzed azahetero ring; W
1
—W
2
is CH
2
—CH
2
; X
1
—X
1
is CH
2
—CH
2
; and Z is methylene or carbonyl; or the like, is a ligand for ORL1-receptor and are useful for treating or preventing pain, a CNS disorder or the like in mammalian subjects.