Abstract:

A new triterpenoid, methyl buergericate (12a), which was elucidated as 2α,3α,19α,24-tetrahydroxyl olean-12-en-28-oic acid methyl ester by spectroscopic methods, together with eleven known triterpenoids was isolated from Rubus buergeri Miq. The isolation of the above chemical constituents from this plant was reported for the first time.

寒莓中三萜成分的研究
邓烨 彭树林 张晓王容 丁立生 王明奎*

（中国科学院成都生物研究所，成都610041）

摘要：从蔷薇科悬钩子属植物寒莓 (Rubusbuergeri Miq .)中分离鉴定了 12个三萜类化合物。其中 1个为新化合物 ,命名为寒莓酸甲酯 (12a) ,其结构经波谱分析鉴定为 2α ,3α,19α ,2 4-四羟基齐墩果-12-烯-2 8-酸甲酯。

关键词： 寒莓；三萜；寒莓酸甲酯

Key words: Rubus buergeri , triterpenoid, methyl buergericate