Tannins and Related Compounds. LXXXVII. : Isolation and Characterization of Four New Hydrolyzable Tannins from the Leaves of Mallotus repandus

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公開日
1989
公開者
公益社団法人日本薬学会

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説明

A chemical examination of the leaves of Mallotus repandus (WILLD.) MUELLER-ARG. (Euphorbiaceae) has led to the isolation of four new hydrolyzable tannins, named repandusinin (10), repandusinic acids A (11a) and B (14a) (as monopotassium salts) and mallotinin (15), together with glucogallin (1), eugeniin (2), corilagin (3), punicafolin (4), geraniin (5), furosin (6), mallotinic acid (7), mallotusinic acid (8) and brevifolin carboxylic acid (9). Based on the chemical and spectroscopic evidence, repandusinin was assigned the structure (10) in which brevifolin carboxylic acid is attached to the C-4 position of the glucose moiety in mallotinic acid, while repandusinic acids A and B were characterized as 1-O-galloyl-3,6-(R)-hexahydroxydiphenoyl-(11a) and 1-O-galloyl-3,6-(R)-valoneayl-4-O-(4'-dehydrochebuloyl)-β-D-glucoses (14a), respectively. Similarly, mallotinin was found to have the structure (15) possessing a new acid, mallotic acid, linked to the C-2 position of the corilagin moiety.

収録刊行物

  • Chem. Pharm. Bull.

    Chem. Pharm. Bull. 37 2624-2630, 1989

    公益社団法人日本薬学会

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詳細情報 詳細情報について

  • CRID
    1570009752553825152
  • NII論文ID
    110003627293
  • NII書誌ID
    AA00602100
  • ISSN
    00092363
  • 本文言語コード
    en
  • データソース種別
    • CiNii Articles

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