Two new alkaloids, corydamine hydrochloride, C20H19O4N2Cl, mp235-239° (decomp.) and N-formyl corydamine, C21H18O4N2, mp159.5-160.5°, were isolated from Corydalis incisa PERS. (Papaveraceae) and their structures were established to be II and IX, respectively, by spectroscopic analyses and their chemical conversion to coptisine iodide and anhydrodihydroprotopine-B. Corydamine hydrochloride and N-formyl corydamine are noted as the first naturally occurring alkaloids having the 3-phenyl isoquinoline skeleton.
从Corydalis incisa PERS.(罂粟科)中分离出了两种新的
生物碱,
氯化可瑞达明(corydamine hydrochloride),C20H19O4N2Cl,熔点235-239°(分解)和N-甲酰可瑞达明(N-formyl corydamine),C21H18O4N2,熔点159.5-160.5°。通过光谱分析及其与可尔托辛
碘化物和无
水二氢
原花青素-B的
化学转化,确定了它们的结构分别为II和IX。
氯化可瑞达明和N-甲酰可瑞达明被认为是首批具有
3-苯基异喹啉骨架的天然
生物碱。