白背叶中一个新的异戊烯基二氢黄酮  

A new prenylated flavanone from Mallotus apelta

作　　者：吴桂凡[1] 韦松[1] 蓝树彬[1] 许学健[1] 

机构地区：[1]广西中医学院药学院

出　　处：《中草药》2006年第8期1126-1128,共3页Chinese Traditional and Herbal Drugs

摘　　要：目的对大戟科植物白背叶Mallotusapelta的叶进行化学成分研究。方法原料的乙醇浸出物,用各种柱色谱进行分离和纯化,所得化合物以理化性质和波谱数据进行鉴定。结果分得5个化合物,分别鉴定为蒲公英赛醇(Ⅰ)、β-谷甾醇(Ⅱ)、5,7-二羟基-6-异戊烯基-4′-甲氧基二氢黄酮(Ⅲ)、洋芹素(Ⅳ)、洋芹素-7-O-β-D-葡萄糖苷(Ⅴ)。结论化合物为新化合物,命名为白背叶素(mallotusin),化合物Ⅰ、Ⅲ-Ⅴ为首次从白背叶中分得。关键词:白背叶;蒲公英赛醇;5,7-二羟基-6-异戊烯基-4′-甲氧基二氢黄酮;洋芹素;Objective To study the chemical constituents in the leaves of Mallotus apelta. Methods Constituents isolation and purification were carried out on silica gel and polyamide column. Their structures were identified by physicochemical properties and spectral analysis. Results Five compounds were isolated and elucidated as taraxerol （ Ⅰ ）, β-sitosterol （ Ⅱ ）, 5, 7-dihydroxy-6-prenyl-4＇-methoxy-flavanone （ Ⅱ ）, apigenin （ Ⅳ ）, and apigenin-7-O-β-D-glucoside （ Ⅴ ）. Conclusion Compound Ⅲ is a new compound named as mallotusin. Compounds Ⅰ and Ⅲ - Ⅴ are isolated from the leaves of M. apelta for the first time.

关 键 词：白背叶 蒲公英赛醇 5 7-二羟基-6-异戊烯基-4’-甲氧基二氢黄酮 洋芹素 洋芹素-7-O-β-D-葡萄糖苷 

分 类 号：R284.1[医药卫生—中药学]