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从细柱五加(Acanthopanax gracilistylus W.W.Smith)叶的热MeOH提取液中分离得到了4个lupane型三萜化合物,根据它们的理化性质和波谱数据,鉴定出其化学结构分别为acankoreagenin(1),3-epi—betulinic acid 28-O—α—L—rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D—glucopyranosylester(2),acantrifosideA(3)和acankoreosidec(