Twelve compounds were isolated from the 70% ethanol extract of the fruit of Acanthopanax sessiliflorus (Ru-pr. et Maxim.) Seem. ,which was fractionated on a macroporous resin column by 60% and 30% ethanol. They were i-dentified as scopoletin (1), protocatechuic acid methyl ester (2), quercetin (3), acanthoside B (4), hyperin (5), (-) -pinoresinol-4,4'-di-O-β-D-glucopyranoside (6), chiisanoside (7), 22a-hydroxychiisanoside (8), niduloic acid (9), daucosterol (10) ,acopolin (11) ,and acanthoside D (12) ,by analysis of their spectroscopic data and by comparison with those reported on the literature. Compound 9 was a new natural product. 1,2,6 and 11 were isolated from Araliaceae for the first time and 3 was obtained from Acanthopanax genus for the first time.%从无梗五加(Acanthopanax sessiliflorus(Rupr.et Maxim.)Seem.)果70%乙醇提取物中分离鉴定了12个化合物.经波谱鉴定为东莨菪内酯(1),原儿茶酸甲酯(2),槲皮素(3),无梗五加苷B(4),金丝桃苷(5),(-)-pinoresinol-4,4'-di-O-β-D-glucopyranoside(6),chiisanoside(7),22a.hydroxyehiisanoside(8),niduloic acid(9),胡萝卜苷(10),东莨菪苷(11)和无梗五加苷D(12).其中化合物9为新天然产物,化合物1,2,6和11是首次从五加科植物中分离得到,化合物3是首次从五加属植物中分离得到.
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