黄芪属植物化学研究——Ⅱ.梭果黄芪苷A和B的结构鉴定  

Chemical Study of Astragalus Plant——II. The Structures of Asernestioside A and B, Isolated from Astragalus Ernestii Comb

作　　者：王惠康[1] 何侃 凌罗庆[1] 李宏善 

机构地区：[1]上海中医学院

出　　处：《化学学报》1989年第6期583-587,共5页Acta Chimica Sinica

基　　金：国家自然科学基金会资助

摘　　要：从梭果黄芪(Astragalus ernestii Comb.)的干燥根中分得胡萝卜苷,β-谷甾醇和两个新黄芪皂苷A和B。经光谱和化学方法确证,苷A为3-O-[α-L-鼠李吡喃糖基(1→2)-β-D木吡喃糖基]-25-O-β-D葡萄吡喃糖基环黄芪醇,苷B为3-O-[α-L-鼠李吡喃糖基(1→2)-(3′-O-乙酰基)-β-D-木吡喃糖基]-25-O-β-D一葡萄吡喃糖基环黄芪醇。Four compounds have been isolated from the roots of Astragalus ernestii Comb. Two of them were identified as new triterpenoidal glycosides, named asernestioside A and B, their structures were elucidated as 3-O-[a-L-rhamnopyranosyl (1→2)-β-D-xylopyra- nosyl]-25-O-β-D-glucopyranosyl cycloastragenol and 3-O-[a-L-rhamnopyranosyl (1→2) -(3′-O-acetyl)-β-D-xylopyranosyl]-25-O-β-D-glucopyranosyl cycloastragenol on the bases of physicochemical evidence and chemical reactions. The others were shown to be know compounds, daucosterol and β-sitosterol.

关 键 词：中药 梭果黄芪 化学成分 梭果黄氏苷A 梭果黄氏苷B 结构鉴定 

分 类 号：R284.1[医药卫生—中药学]