Isoquinoline Alkaloids Isolated from Corydalis yanhusuo and Their Binding Affinities at the Dopamine D1 Receptor
作者:Zhong-Ze Ma、Wei Xu、Niels Jensen、Bryan Roth、Lee-Yuan Liu-Chen、David Lee
DOI:10.3390/molecules13092303
日期:——
Bioactivity-guided fractionation of Corydalis yanhusuo has resulted in the isolation of eight known isoquinoline alkaloids - tetrahydropalmatine, isocorypalmine, stylopine, corydaline, columbamine, coptisin, 13-methylpalmatine, and dehydrocorybulbine. The tertiary alkaloids were further analyzed by chiral HPLC to determine the ratios of d-and l-isomers. The isolated compounds were screened for their binding affinities at the dopamine D1 receptor. Isocorypalmine had the highest affinity (Ki = 83 nM). The structure-affinity relationships of these alkaloids are discussed.
通过对延胡索堇菜进行生物活性指导分馏,分离出了八种已知的异喹啉生物碱--四氢巴马汀、异异巴马汀、苯乙啶、堇菜碱、堇菜胺、堇菜素、13-甲基巴马汀和脱氢堇菜碱。通过手性高效液相色谱法进一步分析了这些三级生物碱,以确定 d 和 l 异构体的比例。对分离出的化合物进行了筛选,以确定它们与多巴胺 D1 受体的结合亲和力。其中,Isocorypalmine 的亲和力最高(Ki = 83 nM)。本文讨论了这些生物碱的结构-亲和力关系。