4.4 Article

Lignan and neolignan glucosides, and tachioside 2'-O-4aEuro3-O-methylgallate from the leaves of Glochidion rubrum

Journal

JOURNAL OF NATURAL MEDICINES
Volume 63, Issue 4, Pages 408-414

Publisher

SPRINGER TOKYO
DOI: 10.1007/s11418-009-0344-6

Keywords

Glochidion rubrum; Euphorbiaceae; Lignan glucoside; Neolignan glucoside; Tachioside 2 '-O-4 ''-methylgallate

Funding

  1. Ministry of Education, Science, Sports, Culture and Technology of Japan
  2. Japan Society for the Promotion of Science
  3. Ministry of Health, Labour and Welfare
  4. Astellas Foundation for Research on Medicinal Resources
  5. Takeda Science Foundation

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Thirteen compounds (1-13) were isolated from a MeOH extract of leaves of Glochidion rubrum. The structures of four new compounds were elucidated to be (-)-isolariciresinol 2a-O-beta-d-glucopyranoside (1), (7R,8S)- and (7R,8R)-4,7,9,9'-tetrahydroxy-3,3'-dimethoxy-8-O-4'-neolignan 7-O-beta-d-glucopyranosides (2 and 3, respectively), and tachioside 2'-O-4aEuro(3)-O-methylgallate (4) on detailed inspection of one- and two-dimensional NMR spectral data.

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