粉枝莓中的两种新黄酮成分(英文)

Two new flavones from Rubus biflorus Buch

为研究粉枝莓(Rubus biflorusBuch)的化学成分,经柱色谱分离,从粉枝莓中分离得到2个黄酮类化合物,光谱分析鉴定其结构为:8-甲基-6-异戊烯基-5,7-二羟基-5′-甲氧基-3′,4′-二氧亚甲基黄酮(A),和8-甲基-5′-异戊烯基-5-甲氧基-6,7-(2″,2″-二甲基吡喃)-3′,4′-二氧亚甲基黄酮(B),分别命名为粉枝莓素A和粉枝莓素B。化合物A和B为新的黄酮类化合物。

This project is to study chemical constituents of Rubus biflorus Buch（Chinese name ＂Fenzhimei＂）,isolated by silica gel chromatography and structure determined by spectroscopic techniques.Two flavones were isolated from Rubus biflorus Buch and identified as 8-methyl-6-（3″-methylbut-2″-enyl）-5,7-dihydroxy-5′-methoxy-3′,4′-methylenedioxy flavone（A） and 8-methyl-5-methoxy-6,7-（2″,2″-dimethylpyran）-3′,4′-methylenedioxy-5′-（3-methylbut-2-enyl） flavone （B）,named as fenzhimines A and B,respectively.Compounds A and B are two new flavonoids.