Abstract:

A new triterpenoid saponin, namely pomatoside A (3) 13b, 28-epoxy-16-oleananone-3-O-[a-L-rhamnopyranosyl-(1®6)-O-b-D-glucopyranosyl-(1®4)-O-b-D-glucopyranosyl-(1®6)-O-b-D-glucopyranosyl-(1®2)]-b-D-glucopyranoside, together with twelve known compounds, was isolated for the first time from Pomatosace filicula Maxim., a monotypic endemic plant, grown in the Qinghai-Xizang Plateau of China. Their structures were elucidated by spectroscopic analyses and chemical methods, especially 2D-NMR.

羽叶点地梅的化学成分
廖志新 张 华 岳建民
(中国科学院上海生命科学院上海药物研究所新药研究国家重点实验室, 上海 201203)

摘要： 首次从中国特有的单属单种植物羽叶点地梅(Pomatosace filicula Maxim.)分离到13 个化合物。应用波谱技术(尤其是2D-NMR：TOCSY, HMQC, HMBC)及化学方法鉴定了它们的结构。其中，化合物3 为一新的三萜皂苷类化合物，其结构为13b,28-epoxy-16-oleananone-3-O-[a-L-rhamnopyranosyl-(1-6)-O-b-D-glucopyranosyl-(1-4)-O-b-D-glucopyranosyl-(1-6)-O-b-D-glucopyranosyl-(1-2)]-b-D-glucopyranoside，命名为羽叶点地梅甲苷(pomatoside A)。
关键词： 羽叶点地梅；报春花科；羽叶点地梅甲苷；三萜皂苷；神经酰氨

通讯作者。E-mail: <jmyue@mail.shcnc.ac.cn>。