目的 研究龙眼Dimocarpus longan果皮的化学成分。方法 采用硅胶柱、聚酰胺柱以及葡聚糖凝胶色谱等手段对龙眼果皮乙醇提取物进行分离纯化，并利用理化性质和光谱数据鉴定化合物的结构。结果 从龙眼果皮乙醇提取物中分离出13个化合物，分别鉴定为木栓酮（1）、木栓醇（2）、（24R）-豆甾-4-烯-3-酮（3）、β-谷甾醇（4）、呋喃丙烯酸（5）、异莨菪亭（6）、β-胡萝卜苷（7）、没食子酸（8）、柯里拉京（9）、对羟基苯甲酸庚酯（10）、没食子酸甲酯（11）、4-O-α-L-鼠李糖基-鞣花酸（12）、鞣花酸（13）。结论 化合物3～7、10和12为首次从龙眼果皮中分得，其中化合物5为首次报道的天然产物。

Objective To investigate the chemical constituents of pericarp of longan (Dimocarpus longan) fruits. Methods The chemical constituents were isolated by silica gel, polyamide, as well as Sephadex LH-20 column chromatography and their structures were identified on the basis of physical and chemical properties and spectral analysis. Results Thirteen compounds were isolated and identified as: friedelin (1), friedelanol (2), (24R)-stigmast-4-en-3-one (3), β-sitosterol (4), β-(2-furyl) acrylic acid (5), 6-hydroxy- 7-methoxycoumarin (6), β-daucosterol (7), gallic acid (8), corilagin (9), heptyl p-hydroxybenzoate (10), methyl gallate (11), 4-O-α-L-rhamnopyranosyl-ellagic acid (12), and ellagic acid (13). Conclusion Compounds 3―7, 10, and 12 are reported from the pericarp of longan fruits for the first time, and this is the first report for compound 5 as a natural product.

广东省科技计划项目（2010B020312006）；中国科学院知识创新工程重要方向项目（KSCXZ-YW-R-218）；中国科学院华南植物园青年人才基金项目（200720）