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从盾叶薯蓣(Dioscorea zingiberensis Wright)干燥根茎的乙醇提取物分离到4个已知的甾体化合物。根据理化性质,波谱数据,标准品对照等确定Ⅰ是表-拔葜皂甙元(epi-smilage-nin);Ⅱ是延令草次甙(trillin),结构为3-O-(β-D-葡萄吡喃糖)-薯蓣皂甙元(3-O-(β-D-glucopyranosyl)-diosgenin);Ⅲ是薯蓣皂甙元-双葡萄糖甙(diosgenin-diglucoside),结构为3-O-[β-D-葡萄吡喃糖(1→4)-β-D-葡萄吡南糖]-薯蓣皂甙元(3-O-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl]-diosgenin);Ⅳ是纤细皂甙(gracillin),结构为3-O-{β-D-葡萄吡喃糖(1→3)-[α-L-鼠李吡喃糖(1→2)]-β-D-葡萄吡喃糖}-薯蓣皂甙元(3-O-{β-D-glucopyranosyl(1→3)-[α-L-rhamnopynosyl(1→2)]-β-D-glucopyranosyl}-diosgenin)。
Four known steroidal compounds were isolated from the ethanol extract of dry roots of Dioscorea zingiberensis Wright. According to physicochemical properties, spectroscopic data, standard controls, etc., I was identified as epi-smilage-nin; II was trillin, and the structure was 3-O-(β-D- Glucosranosyl-diosgenin; III is diosgenin-diglucoside with 3-O-[β-D structure. - Grape pyranose (1→4)-β-D-glucopyranoside]-Diosgenin (3-O-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl]-diosgenin) ;IV is gracillin, structure is 3-O-{β-D-pyranopyranose (1→3)-[α-L-rhamopyranose (1→2)]-β-D Grape pyranose} - diosgenin (3-O-{β-D-glucopyranosyl (1→3)-[α-L-rhamnopynosyl (1→2)]-β-D-glucopyranosyl}-diosgenin).