1-[(3- or 4-Benzoylphenyl)-lower-alkyl]-[(CH.sub.2).sub.n -N.dbd.B]-substituted-piperidines, useful as anti-asthmatic, anti-allergic, anti-cholinergic, bronchodilator and anti-inflammatory agents, are prepared by alkylation of an appropriate substituted piperidine with a (3- or 4-benzoylphenyl)-lower-alkyl halide or tosylate; by reaction of a 1-[2-(3- or 4-lithiophenyl)-lower-alkyl]-.differential.(CH.sub.2).sub.n --N.dbd.]-substituted-piperidine with benzonitrile and hydrolysis of the resulting benzimidoyl compound; or by reduction of a 1-[.alpha.-(3- or 4-benzoylphenyl)-lower-alkanoyl]-[(CH.sub.2).sub.n --N.dbd.B]-substituted-piperidine.
1-[(3-或
4-苯甲酰基苯基)-较低烷基]-[(CH.sub.2).sub.n -N.dbd.B]-取代
哌啶,用作抗哮喘、抗过敏、抗
胆碱能、支气管扩张剂和抗炎药物,通过将适当取代的
哌啶与(3-或
4-苯甲酰基苯基)-较低烷基卤化物或对
磺酸盐进行烷基化制备;通过将1-[2-(3-或4-
锂苯基)-较低烷基]-.differential.(CH.sub.2).sub.n --N.dbd.]-取代
哌啶与
苯甲腈反应并
水解生成的
苯并咪唑化合物;或通过还原1-[.alpha.-(3-或
4-苯甲酰基苯基)-较低烷酰基]-[(CH.sub.2).sub.n --N.dbd.B]-取代
哌啶制备。