白桐树枝干化学成分研究

Chemical Constituents from Claoxylon indicum Stems

目的：对白桐树枝干的化学成分进行研究。方法：采用各种提取分离纯化技术进行成分分离,通过波谱技术结合理化性质进行结构鉴定。结果：从白桐树枝干的不同浓度乙醇提取物中分离鉴定了7个化合物,分别为：齐墩果酸（1）、β-香树脂醇（2）、7-ketositosterol（3）、东茛菪内酯（4）、β-谷甾醇-β-葡萄糖苷（5）、L-焦谷氨酸（6）、β-谷甾醇（7）。结论：其中,化合物1~6均为首次从白桐树中分离得到。

Objective： To study the chemical constituents of Claoxylon indicum stems. Methods： The chemical constituents were isolated,purified and identified by various chromatographic and spectral techniques. Results： Seven compounds including oleanolic acid（ 1）,β-amyrin（ 2）,7-ketositosterol（ 3）,scopoletin（ 4）,β-sitosterol-β-glucoside（ 5）,L-pyroglutamic acid（ 6） and β-sitosterol（ 7） were isolated from ethanol extract of this plant stems. Conclusion： Compounds 1 ~ 6 are obtained from this plant for the first time.