长松萝化学成分研究

Studies on chemical constituents from herbs of Usnea longissima

目的:研究长松萝化学成分。方法:应用溶剂法和色谱法分离纯化化合物,利用谱学技术鉴定化合物结构。结果:分离鉴定了13个化合物,分别为赤星衣酸乙酯(1),木栓酮(2),β-香树脂醇(3),β-谷甾醇(4),2,4-二羟基-3,6-二甲基苯甲酸甲酯(5),坝巴酸(6),泽屋萜(7),苔色酸乙酯(8),3β-羟基-粘霉-5-烯(9),齐墩果酸(10),(+)-松萝酸(11),苔色酸甲酯(12)和4-甲基-2,6-二羟基苯甲醛(13)。结论:化合物2,3,5,8~10为首次从该属植物中分离得到,化合物1,4为首次从该植物中分离得到。

Objective:To study the chemical constituents of Usnea longissima.Method:The compounds were isolated and purified by the methods of solvent extraction and chromatographic technique,and their structures were identified on the basis of the analyses of spectral data or comparison with those of authentic sample.Result:Thirteen compounds were obtained and identified as ethyl hematommate(1),friedelin(2),β-amyrin(3),β-sitosterol(4),methyl-2,4-dihydroxy-3,6-dimethylbenzoate(5),barbatinic acid(6),zeorin(7),ethyl orse...