【摘要】 从四川清风藤（Ｓａｂｉａ ｓｃｈｕｍ ａｎｎｉａｎａ Ｄｉｅｌｓ）的根皮分离到５ 个三萜化合物，根据理化常数、波谱分析及配合衍生物制备，分别鉴定为：３－氧，Δ１１，１３（１８）－齐墩果二烯（１）、３，１１－二氧，Δ１２－齐墩果烯（２）、３β－羟基，Δ１１，１３（１８）－齐墩果二烯（３）、３－氧，１１α－羟基，Δ１２－齐墩果烯（４）和３β，１１α－二羟基，Δ１２－齐墩果烯（５）。其中，４为新化合物更多还原

【Abstract】 Five triterpenoids were isolated from the roots of Sabia schumanniana Diels.Based on their physical constants, UV, IR, 1H NMR, 13 C NMR, DEPT spectroscopic analysis and preparation of their derivatives, they were identified as 3 oxo olean 11,13(18) diene(1), 3,11 dioxo olean 12 ene(2),3β hydroxy olean 11,13(18) diene(3), 3 oxo,11α hydroxy olean 12 ene(4),3,11α dihydroxy olean 12 ene(5).Compound 4 is a new compound.Their 13 C NMR spectra have been signified by means of DEPT analysis 。更多还原