【摘要】 从小红参（Ｒｕｂｉａｙｕｎｎａｎｅｎｓｉｓ）中分离鉴定了２个新的乔木烷型三萜，分别命名为茜草乔木酮乙和丙（ｒｕｂｉａｒｂｏｎｏｎｅＢ，Ｃ）。用光谱和化学方法证明它们的结构分别为：７β，１９α，２８－三羟基乔木－９（１１）－烯－３－酮和２８－乙酰氧基－７β，１９α－二羟基乔木－９（１１）－烯－３－酮。更多还原

【Abstract】 From the roots of Rubia yunnanensis , two new arborane type triterpenoids, rubiarbonone B and C were isolated and their structures were elucidated as 7β,19α,28-trhydroxyarbor-9(11)-en-3-one and 28-acetoxyl-7β,19α-dihydroxyarbor-9(11)-en-3-one respectively by spectral and chemical methods.更多还原