ANALGETIC AGENT

摘要

An analgetic agent containing as an active ingredient a piperidine derivative represented by formula (I) or a pharmacologically acceptable salt thereof, wherein R<1> represents hydrogen, lower alkyl, etc.; R<2> to R<5> each represents hydrogen, lower alkyl, halogeno, etc.; n is 0 to 2; X<1>-X<2> represents a group represented by formula (a) or (b) [wherein R<6> represents hydrogen, lower alkyl, etc. and X<3> represents N or C-R<15> (wherein R<15> represents hydrogen, lower alkyl, etc.)]; Y<1>-Y<2>-Y<3> represents a group represented by formula (c) (wherein R<11> represents hydrogen, lower alkyl, hydroxyl, etc.), etc.; and R<7> to R<10> each represents hydrogen, lower alkoxy, etc.