目的 研究拟缺香茶菜Rabdosia excisoides的化学成分。方法 利用硅胶柱色谱法进行分离和纯化,通过谱学分析鉴定单体化合物结构。结果 从拟缺香茶菜分离鉴定2个化合物,化合物Ⅰ命名为拟缺香茶菜甲素(excisoidesinA);化合物Ⅱ鉴定为齐墩果酸。结论 化合物Ⅰ为首次发现的新二萜成分。

Objective To study the chemical components in Rabdosia excisoides.Methods The isolation and purification were carried out on silica gel column chromatography,the chemical structures were determind by physico-chemical properties and spectral analysis.Results Two compounds were isolated from R.excisoides and their structures were identified,one was named as excisoidesin A(Ⅰ),a new diterpenoid and the other was a known compound,oleanolic acid(Ⅱ).Conclusion Excisoidesin A is a new diterpenoid.

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