【摘要】 <正> 知母（Anemarrhena asphodeloides Bge）具有清热除烦,泻肺滋阴等功能。已从中分离出多种皂甙,主要有知母皂甙（timosapognin）A1,A2,A3和B1,B2,其中以知母皂甙A3含量为最多。我们从陕西产知母用常规方法分离到两个化合物晶Ⅰ和晶Ⅱ（见图1）。晶Ⅰ为白色针晶,mp 174～6℃,[α]_D¹²-3.9℃,高分辨质谱得出分子式为C₂₇H₄₄O₃。其香草醛—硫酸更多还原

【Abstract】 A new saponin, named smilageninoside, mp 265～ 7℃,was isolated from rhizomes of Anemarrhena asphdeloides by conventional method. The structure of smilageninoside was identified on the basis of IR, ¹HNMR, ¹³CNMR and FAB-MS.Its structure was smilagenin 3 - O - [β- D- glucopyranosyl （1→ 2）] - β - Dmannopyranoside.更多还原