Alkaloids of Corydalis incisa PERS. V. The structures of corydalispirone and corydalisol.
作者:GENICHIRO NONAKA、ITSUO NISHIOKA
DOI:10.1248/cpb.23.294
日期:——
Two new alkaloids, corydalispirone, C20H17O6N, mp 196-198°, [α] D 0°, and corydalisol, C20H21O5N, mp 160-161°, [α] D +21.4°, were isolated from Corydalis incisa PERS. (Papaveraceae). The structure of corydalispirone was established to be I by the spectroscopic examinations and chemical correlation with bicucullinediol and adlumidinediol, and the structure of corydalisol was determined as VIII by the conversion to d-tetra-hydrocoptisine. Corydalispirone and corydalisol are noted as a new series of isoquinoline-type alkaloids having one more carbon atom at the benzyl moiety, and probably are metabolites of coptisine.
从深切紫堇 PERS 中分离出两种新的生物碱,紫堇螺酮,C20H17O6N,熔点 196-198°,[α] D 0°,和紫堇醇,C20H21O5N,熔点 160-161°,[α] D +21.4°。 (罂粟科)。经光谱分析及与荷包牡丹二醇、阿杜脒二醇的化学关联,确定紫堇螺酮的结构为I,经转化为d-四氢黄连碱,确定紫堇醇的结构为VIII。紫堇螺酮和紫堇醇被认为是在苄基部分多一个碳原子的一系列新的异喹啉型生物碱,并且可能是黄连碱的代谢产物。