中文摘要：

目的：研究洋金花中甾体类化学成分。方法：采用大孔吸附树脂、硅胶等柱色谱方法进行分离和纯化,利用质谱和核磁测试技术进行化合物的结构鉴定。结果：从洋金花70%乙醇提取物中分离并鉴定了5个甾体类化合物,分别为过氧化麦角甾醇（1）,Alkesterol B（2）,Lucium substance B（3）,β-谷甾醇（4）和豆甾醇（5）。结论：化合物1为首次从茄科中分离得到。

英文摘要：

Objective： To investigate the chemical constituents of sterides from Dautra Mete l L..Methods： A variety of column chromatographies such as macroporous resins and silica gel were used in the isolation and purification, and MS along with NMR was adopted to determine the structures.Results：Five compounds were isolated and purified from the 70%ethanol extract of Datura Metel L., Ergosterol peroxide （1）, Alkesterol B （2）, Lucium substance B （3）, β-Sitosterol （4）, Stigmasterol （5）.Conclusion： Compound 1 is isolated and reported from Solanaceae for the first time.