作者:Günter Adam、Nguên Quyêt́ Chiêń、Nguyên Hûu Khôi
DOI:10.1016/s0031-9422(00)80538-5
日期:1984.1
Abstract Withanolide D, 7β-acetoxy-withanolide D and two new withanolide glycosides, named dunawithanines A and B, were isolated from Dunalia australis . From physical data and chemical transformations, the structures of the new compounds were determined as (20 R ,22 R - O (3)-[2′,3′-di- O -(β- D -glucopyranosyl)-β- D -glucopyranosyl]-3β,20-dihydroxy-1α-acetoxy-witha-5,24-dienolide and the corresponding
摘要 从Dunalia australis中分离得到了睡茄内酯D、7β-乙酰氧基-睡茄内酯D和两种新的睡茄内酯糖苷dunawithanines A和B。从物理数据和化学转化,新化合物的结构确定为 (20 R ,22 R - O (3)-[2',3'-di-O -(β- D -吡喃葡萄糖基)-β- D -吡喃葡萄糖基]-3β,20-二羟基-1α-乙酰氧基-witha-5,24-二烯内酯和相应的O(3)-[β-D-吡喃葡萄糖基(1'→x)-β-D-吡喃葡萄糖基]化合物,代表在植物界发现的第一个 withanolide 糖苷。