Preparation of benzo[c][2,7]naphthyridin-5(1<i>H</i>)-ones as analogs of benzopyrano[3,4-<i>c</i>]pyridin-5-one bronchodilators
作者:Paul C. Unangst、David T. Connor、Mary E. Carethers、Charles S. Schwender、Richard E. Brown、Chester Puchalski
DOI:10.1002/jhet.5570230355
日期:1986.5
A series of 2,3,4,6-tetrahydro-8,9-dimethoxybenzo[c][2,7]naphthyridin-5(1H)-ones was prepared as potential anticholinergic bronchodilators. The naphthyridine ring system was constructed by cyclization of a 3-amido-4-piperidone. Alkylation with alkylaminoethyl chlorides or reductive amination of an intermediate methyl ketone yielded the final target compounds.
制备了一系列2,3,4,6-四氢-8,9-二甲氧基苯并[ c ] [2,7]萘啶-5(1 H)-酮类化合物作为潜在的抗胆碱能支气管扩张剂。萘啶环体系是通过3-氨基-4-哌啶酮的环化而构建的。用烷基氨基乙基氯化物进行烷基化或中间体甲基酮的还原胺化,得到最终的目标化合物。