N-SUBSTITUTED-N-(4-PIPERIDINYL) AMIDE DERIVATIVE

摘要

Disclosed is a compound represented by the general formula (I) below or a salt thereof. Also disclosed is an analgesic containing such a compound or a salt thereof as an active constituent. (I) (In the formula, R<1> represents an alkyl group having 1-6 carbon atoms or the like; R<2> represents a phenyl group or the like; R<3> represents a hydrogen atom, an alkoxycarbonyl group having 2-8 carbon atoms, a methyl group substituted by an alkoxy group having 1-6 carbon atoms or the like; R<4> represents a phenyl group which may have a substituent; R<5> represents a hydrogen atom, an alkyl group having 1-6 carbon atoms or an aralkyl group; R<6> represents a hydrogen atom, an alkyl group having 1-6 carbon atoms which may have a substituent, a phenyl group, a 5- or 6- membered ring heterocyclic group, an aralkyl group, a heterocyclic alkyl group or the like; R<7> represents a hydrogen atom or a methyl group; and m is 1 or 2.)