摘要:
目的对乌桕(Sapium sebiferum(L.)Roxb.)树皮的化学成分进行研究.方法采用95%乙醇提取,浸膏分别以石油醚、乙酸乙酯、正丁醇进行萃取.乙酸乙酯萃取物经反复硅胶柱层析和重结晶进行分离、纯化.通过波谱和化学方法进行结构鉴定.结果从乙酸乙酯萃取物中分离得到8个鞣花酸衍生物,分别为:3,3′,4′-三甲基鞣花酸(3,3′,4′-tri-O-methylellagic acid I),3,3′-二甲基鞣花酸(3,3′-di-O-methylellagic acid Ⅱ),3,3′-二甲基鞣花酸-4′-O-α-D-阿拉伯糖苷(3,3′-di-O-methylellagic acid-4′-O-α-D-arabinfuranosideⅢ),3,3′-二甲基鞣花酸-4′-O-β-D-木糖苷(3,3′-di-O-methylellagic acid-4′-O-β-D-xylopyranoside Ⅳ),3,3′,4-三甲基鞣花酸-4′-O-β-D-葡萄糖苷(3,3′,4-tri-O-methylellagic acid-4′-O-β-D-glucopyranoside V),3-甲基鞣花酸-4′-O-β-D-木糖苷(3-O-methylellagic acid-4′-O-β-D-xylopyranosideⅥ),3,3′-二甲基鞣花酸-4′-O-β-D-葡萄糖苷(3,3′-di-O-methylellagic acid-4′-O-β-D-glucopyranosideⅦ),鞣花酸(ellagic acidⅧ).结论化合物Ⅰ~Ⅶ为首次从该植物中分离得到.