1-((Benzoylphenyl) - lower-alkyl) piperidines and carbinol analogs and preparation thereof
申请人:STERLING DRUG INC.
公开号:EP0052311A1
公开(公告)日:1982-05-26
1-[(3- or 4-Benzoylphenyl)-lower-alkyl]-[(CH2)n-N=B]-substituted-piperidines or α-hydroxy(3-or 4-benzyl), analogs thereof, 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-benzoyl-phenyl)-lower-alkyl halide or tosylate; by reaction of a 1-[2-(3- or 4-lithiophenyl)-lower-alkyl]-[(CH2)n-N=B]-substituted-piperidine with benzonitrile and hydrolysis of the resulting benzimidoyl compound; or by reduction of a 1-[a-(3- or 4-benzoylphenyl)-lower-alkanoyl]-[(CH2)n-N=B]-substituted-piperidine. The analogous carbinols are prepared by reduction, with an alkali metal borohydride, of the ketone.
1-[(3-或 4-苯甲酰基苯基)-低级烷基]-[(CH2)n-N=B]-取代的哌啶或 α-羟基(3-或 4-苄基),其类似物,可作为抗哮喘、抗过敏、抗胆碱能、支气管扩张剂和抗炎剂,通过适当取代的哌啶与(3-或 4-苯甲酰基苯基)-低级烷基卤化物或对甲苯磺酸盐烷基化制备;1-[2-(3-或 4-噻吩基)-低级烷基]-[(CH2)n-N=B]-取代的哌啶与苯甲腈反应,水解生成苯亚甲酰化合物;或还原 1-[a-(3-或 4-苯甲酰基苯基)-低级烷酰基]-[(CH2)n-N=B]-取代的哌啶。通过用碱金属硼氢化物还原酮来制备类似的炔醇。