セネガサポニンの糖部の研究(第2報) : 各単離サポニンの桂皮酸誘導体ならびに単糖の組成および粗サポニンの部分加水分解により得られたオリゴ糖について

概要

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Cinnamic acid derivatives and molar ratios of componental monosaccharides contained in the four purified senega saponins, S-A, S-B, S-C, and S-D isolated from Senegae radix (Polygala senega LINNE var. latifolia TORRY et GRAY, Polygalaceae), were investigated. 4-Methoxy- and 3,4-dimethoxy-cinnamic acids were detected in S-A and S-B (molar ratio, 1 : 1). 4-Methoxycinnamic acid was also detected in S-C, but not 3,4-dimethoxycinnamic acid. Cinnamic acid derivative was not found in S-D. The molar ratios of rhamnose, fucose, xylose, glucose, and galactose were 2 : 1 : 1 : 2 : 2 in S-A, S-B and S-D, and 3 : 1 : 1 : 2 : 2 in S-C. Mild acid hydrolysis of the crude saponin gave six kinds of oligosaccharides, xyl-rham*, gal-xyl*, gal-glu*, (glu, gal)-xyl*, (xyl, rham)-fuc*, (gal, xyl, rham, fuc)-glu*, in addition to the above-mentioned monosaccharides, were detected. (The asterisk indicates the termi nal, reducing portion.)
1972-03-25