从萝藦科植物萝藦(Metaplexis japonica)根中分离出孕烷糖甙,并确定了结构。 用甲醇趁热提取萝藦根(干燥重量300g),所得提取物用水、乙醚分配后,将水层上Diaion HP-20柱,用水、50％甲醇、甲醇洗 The pregnane glycosides were isolated from the root of Metaplexis japonica and the structure was determined. The dilo-promethium root (dry weight 300 g) was extracted with methanol and the resulting extract was partitioned with water and diethyl ether. The aqueous layer was then applied to a Diaion HP-20 column and washed with water, 50% methanol and methanol.