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]-[(CH.sub.2).sub.n --N.dbd.B]-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. The analogous carbinols are prepared by reduction, with an alkali metal borohydride, of the ketone.
1-[(3-或4-苯甲酰苯基)-较低烷基]-[(CH.sub.2).sub.n --N.dbd.B]-取代
哌啶类化合物,可用作抗哮喘、抗过敏、抗
胆碱能、支气管扩张剂和抗炎药物,通过将合适的取代
哌啶与(3-或4-苯甲酰苯基)-较低烷基卤代物或对
甲苯磺酸酯烷基化而制备;通过将1-[2-(3-或4-
锂苯基)-较低烷基]-[(CH.sub.2).sub.n --N.dbd.B]-取代
哌啶与
苯甲腈反应,
水解得到相应的
苯并咪唑化合物;或通过还原1-[.alpha.-(3-或4-苯甲酰苯基)-较低烷酰基]-[(CH.sub.2).sub.n --N.dbd.B]-取代
哌啶来制备。类似的羟基甲
醇类化合物通过将酮还原为相应的羟基
甲醇,使用碱
金属
硼氢化物来实现。