显脉金花茶叶的化学成分研究

目的]利用现代化学技术分析显脉金花茶叶的化学成分。方法]用石油醚、氯仿、乙酸乙酯萃取经乙醇浸提得到的显脉金花荼总浸膏，通过薄层硅胶柱分离、薄层色谱（TLC）鉴别，重结晶得到7种单体化合物，利用各种光谱技术和理化性质进行结构鉴定。结果]鉴定出其中7个化合物的结构，包括甾醇类2个，三萜类化合物3个，脂肪醇类1个，黄酮类化合物1个，分别为β-谷甾醇、α-菠菜甾醇、伊香树素、齐墩果酸、olibanumol—L、正三十四醇和山奈酚。结论]α-菠菜甾醇、正三十四醇和olibanumol—L均为首次从该种植物中鉴定出来，β-香树素和山奈酚为首次从该属植物中分离鉴定出来。

Analysis of Chemical Components of Camellia euphlebia Merr. ex Sealy in Guangxi

Objective ] To analyze the chemical components of Camellia euphlebia Merr. ex Sealy in Guangxi by modern chemical technology. Method ] The ethanol extracts of C. euphlebia was extracted with petroleum ether, chloroform, ethyl acetate according to the different polarity of solvent, the extracts of petroleum-ether phase, chloroform phase, ethyl-acetate phase were obtained respectively. The compounds were iso- lated and purified by silica ge! column and thin layer chromatography （ TLC ）. Various spectroscopic techniques and the physieochemical prop- erties of the structures were used to identify seven kinds of compounds. Result] fl-sitosterol, α-spinasterol, oleanie acid, olibanumol-L, n- tetratriacontanol, kaempfero] were isolated and purified from C. euphlebia in Guangxi. Conclusion ] β-spinasterol, n-tetratriaeontanol, olibanumol-L were the first time identified from the plant, and β-amyrin, kaempferol were firstly isolated from the genus.