Synthesis and selective activity of cholinergic agents with rigid skeletons. IV.
作者:SHOJI TAKEMURA、YASUYOSHI MIKI、MASAYUKI KURODA、TOSHIYUKI OZAKI、ARITOMO SUZUKI
DOI:10.1248/cpb.30.1084
日期:——
In order to examine the structure-activity relationship for cholinergic action, cis-1-methylpiperidine-4, 3-acetolactone methiodide (1a) was designed and synthesized. The reaction of 1-carbobenzoxy-4-piperidone (3) with diethyl phosphonoacetate gave ethyl 1-carbobenzoxy-⊿4, α-piperidine-4-acetate (5), which was isomerized to the endo-isomer (6). Compound 6 was converted to an unsaturated lactone (9). Hydrogenation of 9 followed by methylation gave 1a. The compound 1a showed no acetylcholine-like activity but did show a weak atropine-like antagonistic effect to acetylcholine.
为了研究胆碱能作用的结构-活性关系,设计并合成了顺式-1-甲基哌啶-4,3-乙酰内酯甲碘化物(1a)。将 1-羧基苯氧基-4-哌啶酮(3)与膦酰基乙酸二乙酯反应,得到 1-羧基苯氧基-⊿4, α-哌啶-4-乙酸乙酯(5),并将其异构化为内向异构体(6)。化合物 6 转化为不饱和内酯(9)。将 9 加氢并甲基化后得到 1a。化合物 1a 没有乙酰胆碱样活性,但对乙酰胆碱有微弱的阿托品样拮抗作用。