Digitalis Saponins. II. Leaf Saponins of Digitalis purpurea L.

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概要

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• As the leaf saponins of Digitalis purpurea L. two saponins, I and II, were detected on a paper chromatogram and isolated by column chromatography on alumina. With the aid of thin-layer chromatography I was found to be composed of two saponins, I-1 and I-2,while II to be a mixture of six (three pairs). I-1 and I-2 were obtained in pure state according to the Tschesche method and characterized, respectively, as tigogenin- and gitogenin-tetraglycosides both of which equally have one mole each of D-galactose and D-xylose and two moles of D-glucose as the sugar moieties. I-1,m.p. 284〜286°(decomp.), [α]^<28>_D-64.0°, was named desgalactotigonin and I-2,m.p. 252〜255°(decomp.), [α]^<25>_D-58.5°, F-gitonin. Three pairs of saponins in II were assumed to be penta-, hexa- and hepta-glycosides and each pair was presumed to consist of tigogenin- and gitogenin-glycosides both of which might have the same sugar composition.

• 公益社団法人日本薬学会の論文
• 1964-11-25

著者

• 川崎 敏男

  Faculty of Pharmaceutical Sciences of Kyushu University

• 西岡 五夫

  Faculty Of Pharmaceutical Sciences Kyushu University

• 西岡 五夫

  九州大学農学部

関連論文

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