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苜蓿全草经提取、柱层析得皂甙M_1,通过化学反应、物理常数测定和波谱分析,确定结构为常春藤甙元-3-O-[α-L-阿拉伯吡喃糖(1→2)-β-D-葡萄吡喃糖-(1→2)α-L-阿拉伯吡喃糖]-28-O-β-D-葡萄吡喃糖甙。以
甙Saponin M_1 was extracted and purified by column chromatography and the structure was identified as Ivy aglycone-3-O-[α-L-arabinopyrose (1→2) through chemical reaction, physical constants and spectroscopic analysis. -[beta]-D-Vinylpyranose-(l->2) [alpha]-L-Arabinopyranose]-28-O-[beta]-D-pyranopyranose. To