Four new hydrolyzable tannins and an acylated flavonol glycoside from Euphorbia maculata

Yoshiaki Amakura, Keita Kawada, Tsutomu Hatano, Isao Agata, Takeshi Sugaya, Sansei Nishibe, Takuo Okuda, Takashi Yoshida

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The structure of a new acylated flavonol glycoside from the leaf extract of Euphorbia maculata was characterized as quercetin 3-O-(2″,3″-di-O-galloyl)-β-D-glucopyranoside. Four new hydrolyzable tannins together with twelve known tannins were also isolated and their structures were established by spectral and chemical means as 1,2,6-tri-O-galloyl-α-D-glucose, 1-O-galloyl-2,4;3,6-di-O-chebuloyl-β-D-glucose (eumaculin E), and dimers (eumaculins B and D) having a tergalloyl and a macaranoyl group as the linking unit of monomers, respectively.

Original languageEnglish
Pages (from-to)727-733
Number of pages7
JournalCanadian Journal of Chemistry
Volume75
Issue number6
DOIs
Publication statusPublished - Jan 1 1997

Keywords

  • Eumaculin B
  • Eumaculin E
  • Euphorbia maculata
  • Euphorbiaceae
  • Tannin

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Organic Chemistry

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    Amakura, Y., Kawada, K., Hatano, T., Agata, I., Sugaya, T., Nishibe, S., Okuda, T., & Yoshida, T. (1997). Four new hydrolyzable tannins and an acylated flavonol glycoside from Euphorbia maculata. Canadian Journal of Chemistry, 75(6), 727-733. https://doi.org/10.1139/v97-088