【摘要】 通过正相和反相硅胶柱层析,从地奥心血康药粉的正丁醇萃取物中分离纯化出2个微量的新甾体皂苷,通过MS和NMR(包括HMQC,HMBC和NOESY)等波谱解析,结合化学降解分析将其结构鉴定为3β,26-二醇-25(R)-?5,20(22)-二烯-呋甾-26-O-β-D-吡喃葡萄糖苷(1)和26-O-β-D-吡喃葡萄糖基-3β,20α,26-三醇-25(R)-?5,22-二烯-呋甾-3-O-α-L-吡喃鼠李糖基(1→2)-[α-L-吡喃鼠李糖基(1→4)]-β-D-吡喃葡萄糖苷(2).更多还原

【Abstract】 Two new furostanol-type steroidal saponins were isolated from Di’aoxinxuekang, the total saponin from the roots of Dioscorea panthaica and D. nipponica. On the basis of spectroscopic and chemi- cal evidence, their structures were elucidated as 3β,26-diol-25(R)-?5,20(22)-dienofurostan-26-O-β-D- glucopyranoside (1) and 26-O-β-D-glucopyranosyl-3β,20α,26-triol-25(R)-?5,22-dienofurostan-3-O-α-L- rhamnopyranosyl(1→2)-[α-L-rhamnopyranosyl(1→4)]-β-D-glucopyranoside (2).更多还原