A New C-Glycosylflavone from the Leaves of Cycas panzhihuaensis

攀枝花苏铁叶中的一个新黄酮碳甙(英文)

A new C-glycosylflavone, named panzhihuacycaside (1), was isolated from the leaves of Cycas panzhihuaensis L. Zhou et S. Y. Yang (Cycadaceae) along with 2,3-dihydrohinokiflavone (2), 5,5',7,7', 4',4''-hexahydroxy-(2',8')-biflavone (3), vanillic acid (4), P-sitosterol (5) and daucosterol (6). Their structures were elucidated by spectral and chemical evidence.

从攀枝花苏铁 (CycaspanzhihuaensisL .ZhouetS .Y .Yang)叶中分离出 6个化合物 ,其中 1个为新黄酮碳甙 ,命名为攀枝花苏铁甙 (1) ,其结构通过波谱解析和化学降解得以确定。其余化合物分别鉴定为 2 ,3_二氢偏柏黄酮(2 )、5 ,5″ ,7,7″,4′ ,4 _六羟基_(2′,8″)_双黄酮 (3)、香草酸 (4 )、β_谷甾醇 (5 )和胡萝卜甙 (6 )。