Studies on the Constituents of Swertia japonica. IV. Isolation and Structure of Xanthones
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概要
- 論文の詳細を見る
The chemical constituents of Swertia japonica MAKINO were studied. Three kinds of new natural xanthones, named norswertianin (I), swertianin (III) and methylswertianin (V), were isolated from the whole herb of this plant, together with desmethylbellidifolin (X) and bellidifolin (XII). I was identified as 1,3,7,8-tetrahydroxyxanthone. The direct isolation of I from natural source has never been published, although it has derived from decussatin (VII) and/or swertinin (VIII) by demethylation. The structure of III and V were shown to be 1,7,8-trihydroxy-3-methoxyxanthone and 1,8-dihydroxy-3,7-dimethoxy-xanthone, respectively. At the same time, "swertianol"was revised the structure to 1,5,8-trihydroxy-3-methoxyxanthone, which was proved to be identical with bellidifolin.
- 公益社団法人日本薬学会の論文
- 1969-01-25
著者
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小松 曼耆
Research Laboratory, Taisho Pharmaceutical Co., Ltd.
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小松 曼耆
Research Laboratory Taisho Pharmaceutical Co. Ltd.:(present Address)faculty Of Pharmaceutical Scienc
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富森 毅
Research Laboratory, Taisho Pharmaceutical Co., Ltd.
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御厨 直子
Research Laboratory, Taisho Pharmaceutical Co., Ltd.
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御厨 直子
Research Laboratory Taisho Pharmaceutical Co. Ltd.
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