Abstract:

A new triterpenoid saponin, namely unifloroside, together with five known compounds, was isolated from Rhaponticum uniflorum (L.) DC. The structure of the new triterpenoid saponin was elucidated as 3-O-α-L-arabinopyranosyl-urs-9(11),12-dien-28 oic acid β-D-glucopyranosyl ester mainly by using 1D, 2D-NMR techniques and chemical methods.

祁州漏芦中一个新的三萜皂甙

张永红¹  芦志刚²  李新圃²  汪汉卿^1*

(1.中国科学院兰州化学物理研究所,兰州,730000； 2.中国农业科学院兰州畜牧与兽药研究所,兰州,730050)

从祁州漏芦(Rhaponticum uniflorum (L.) DC.)的根中分离得到6个三萜皂甙(1～6),其中化合物3为一新的三萜皂甙,命名为unifloroside,其结构经1D, 2D-NMR及化学方法鉴定为3-O-α-L-arabinopyranosyl-urs-9(11),12-dien-28-oic acid β-D-glucopyranosyl ester.

关键词 祁州漏芦 菊科 三萜皂甙

*通讯作者 Email: whqwt@sina.com

Key words: Rhaponticum uniflorum, Compositae, triterpenoid saponin, unifloroside