弯蕊开口箭中一个新的甾体皂甙元

A STEROIDAL SAPOGENIN FROM TUPISTRA WATTII

从云南民间抗炎药弯蕊开口箭（ＴｕｐｉｓｔｒａｗａｔｔｌｌＨｏｏｋ．ｆ．）的新鲜根状茎中分离到１个新的甾体皂甙元，命名为弯蕊开口箭甙元Ａ（ｗａｔｔｉｇｅｎｉｎＡ），其结构通过光谱分析鉴定为螺甾２５（２７）－烯－１β，２β，３β，４β，５β，６β－六醇：同时还分离到１个已知的甾体皂甙元，兰茂甙元Ｄ（ｒａｎｍｏｇｅｎｉｎＤ）。

A new steroidal sapogenin named wattigenin A was isolated from the fresh rhizoms of Tupistra wattii Hook.f(Liliaceae) together with a known one,ranmognin D. On the basis of spec-tral evidence,the structure of wattigenin A was elucidated as spirost 25(27)-ene-1β,2β,3β,4β,5β、6β-hexol.