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目的深入研究耳叶牛皮消的化学成分,以期更好地开发利用耳叶牛皮消。方法采用硅胶柱色谱、ODS柱色谱和HPLC制备色谱等技术分离纯化耳叶牛皮消的化学成分,经波谱学方法鉴定其化学结构。结果从耳叶牛皮消的根中分离得到11个化合物,即4-羟基苯乙酮(4-hydroxy acetophenone,1),1-(4-羟基苯基)-丙酮(1-(4-hydroxyphenyl)-2-propanone,2),本波苷元(pnupogenin,3),12-O-ikemaoyl-20-dihydro-lineolon(4),凯德苷元(kidjolanin,5),藦萝苷元(metaplexigenin,6),告达亭(cautatin,7),告达亭3-O-β-D-吡喃磁麻糖苷(caudatin 3-O-β-D-cymaropyranoside,8),去乙酰藦萝苷元3-O-β-D-吡喃磁麻糖苷(deacetylmetaplexigenin 3-O-β-D-cymaropyranoside,9),告达亭3-O-β-D-吡喃磁麻糖基-(1→4)-β-D-吡喃洋地黄毒糖苷(caudatin 3-O-β-D-cymaropyranosyl-(1→4)-digitoxopyranoside,10),告达亭3-O-β-D-吡喃夹竹桃糖基-(1→4)-β-D-吡喃磁麻糖苷(caudatin 3-O-β-D-oleandropyranosyl-(1→4)-cymaropyranoside,11)。结论化合物2,3,4,9和10为首次从耳叶牛皮消植物中分离得到。