Xanthone Glucosides of Swertia japonica MAKINO and a Related Plant : Structure of a New Glucoside, Isoswertianolin and Structure Revision of Swertianolin and Norswertianolin

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Description

A new xanthone glucoside named isoswertianolin (2) was isolated from Swertia japonica and its structure was elucidated to be 5-O-β-glucopyranoside of bellidifolin by ^1H and ^<13>C nuclear magnetic resonance (NMR) spectroscopy. In connection with this study, the structure of swertianolin (1), a constituent of this plant, was reinvestigated by NMR spectroscopy, leading to the revision of its structure (the location of its glucosyl linkage) from 1-O-β-glucopyranoside of bellidifolin (3) to 8-O-β-glucopyranoside of 3. It follows that 1 is identical with the glucoside isolated from Gentiana campestris by Kaldas et al. in 1974. Analogously, the structure of norswertianolin (6), previously isolated from Swertia randaiensis HAYATA, was also revised, being formulated as 8-O-β-glucopyranoside of desmethylbellidifolin (7).

Journal

  • Chem. Pharm. Bull.

    Chem. Pharm. Bull. 30 4088-4091, 1982

    The Pharmaceutical Society of Japan

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Details 詳細情報について

  • CRID
    1572824502209371520
  • NII Article ID
    110003634201
  • NII Book ID
    AA00602100
  • ISSN
    00092363
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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