目的研究白背叶Mallotus apelta根的化学成分。方法通过各种柱色谱进行分离纯化,根据理化性质和波谱数据进行结构鉴定。结果分离得到了9个化合物,分别鉴定为β-香树脂醇乙酸酯(1)、高根二醇(2)、羽扇豆-20(29)-烯-3β,30-二醇(3)、对羟基苯甲酸-2α-羟基油桐酸酯(4)、α-香树脂醇乙酸酯(5)、油桐酸(6)、槲皮素(7)、3-甲氧基-4-O-β-D-葡萄糖基苯甲酸(8)、勾儿茶素(9)。结论化合物1～4、6、8、9为首次从野桐属植物中分离得到。 Aim To study the chemical constituents of Mallotus apelta roots. Methods The compounds were separated and purified by various column chromatographies and their structures were elucidated on the basis of physicochemical properties and spectral data. Results Nine compounds were isolated and identified as β-amylacetate (1), erythrodiol (2), lupine-20 (29) (4), alpha-myristyl acetate (5), oleuropenic acid (6), quercetin (7), 3- methoxy-4- O-β-D-glucosylbenzoate (8), Catechin (9). Conclusion Compounds 1 ~ 4, 6, 8 and 9 were isolated from the genus Nymphaea for the first time.