Abstract: Two steroidal saponins were isolated from the rhizome of Aspidistra elatior. On the basis of detailed chemical and spectrascopic evidence, their structures were elucidated to be diosgenin-3-0-[β-D-glucopyranosyl(l-2)-[β-D-xylopyranosyl(l-3)]-β-D-glucopyrano-syl(1-4)-β-D-galactopyranoside(aspidistrin)and neobotogenin-3-0-[β-D-glucopyranosyl(l - 2)]-[β-D-xylopyranosyl(l- 3)]-β-D-glucopyranosyl(l- 4)-β-D-galactopyranoside respectively. The latter is new steroidal saponin and named a neoaspidistrin.

Key words: Liliaceae

摘要： 从蜘蛛抱蛋(Aspidistra elatior B1.)根茎的甲醇提取物中分离得两个甾体皂甙。经波谱解析及化学降解证明其化学结构分别为薯芋皂甙元-3-O-[β-D-葡萄吡喃糖基(l→2)]－[β-D-木吡喃糖基(1→3)]－β－D-葡萄吡喃糖基(l→4)-β－D-半乳吡喃糖甙(即蜘蛛抱蛋甙aspidistrin)及新静诺特皂甙元-3-O－[β-D-葡萄吡喃糖基(1→2)]-[β-D-木吡喃糖基(1→3)]-β-D-葡萄吡喃糖基(l→4)-β-D-半乳吡喃糖甙，后者为一新甙，命名为新蜘蛛抱蛋甙reoaspidistrin。

关键词: 百合科, 蜘蛛抱蛋, 甾体皂甙, 新蜘蛛抱蛋甙