Cornusiin A, A Dimeric Ellagitannin Forming Four Tautomers, and Accompanying New Tannins in Cornus Officinalis

Takuo Okuda, Tsutomu Hatano, Noboru Ogawa, Reiko Kira, Muneto Matsuda

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Cornusiin A (4), a dimeric ellagitannin which forms four anomeric isomers, have been isolated from Cornus officinalis fruits, along with cornusiin B (5) and related compounds. Their structures and the ratio of tautomers in the equilibrium mixture of 4 were determined. Oenothein C (8), which was produced by partial hydrolysis of 5, has been isolated also from Oenothera erythrosepala leaves.

Original languageEnglish
Pages (from-to)4662-4665
Number of pages4
JournalChemical and Pharmaceutical Bulletin
Volume32
Issue number11
DOIs
Publication statusPublished - Jan 1 1984

Keywords

  • 2,3-di-O-galloyl-D-glucose
  • Cornaceae
  • Cornus officinalis
  • Oenothera erythro-sepala
  • Onagraceae
  • cornusiin A
  • cornusiin B
  • dimeric ellagitannin
  • oenothein C
  • tannin

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery

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