合欢皮中新皂甙的结构鉴定

STRUCTURE DETERMINATION OF THREE SAPONINS FROM THE STEM BARK OF ALBIZZIA JULIBRISSIN DURAZZ

摘要: 从合欢皮(Albizziae cortex)的95%乙醇提取物的正丁醇萃取部分中分离得到3个新的三萜皂甙,用化学方法及¹H-和¹³C-NMR,DEPT,COSY,TOCSY,HMQC-COSY,HMQC-TOCSY,HMBC,NOESY等波谱方法鉴定其结构为:I(1个三萜,9个糖,2个单萜),命名为合欢皂甙(julibroside)J₁;II(1个三萜,8个糖,2个单萜),命名为合欢皂甙J_{2;II(1个三萜,9个糖,2个单萜),命名为合欢皂甙J₃。}

Abstract: Three new saponins named Julibroside J₁, J₂ and J₃ were isolated from the stem bark of Albizzia julibrissin Durazz (Albizziae Cortex). Based on chemical and spectral methods, e.g¹H-and ¹³C-NMR, DEPT, COSY CH-COSY, TOCSY, HMQC COSY, HMQC-TOCSY, NOESY, HMBC, their structures have been identified as; Julibroside J₁ (one triterpene, nine sugars, two monoterpenes I); Julibroside J₂ (one triterpene, eight sugars two monoterpenes II); Julibroside J₃ (one triterpene, nine sugars two monoterpenes III).