Tannins of Rosaceous Plants: VIII: Hydrolyzable Tannin Monomers Having a Valoneoyl Group from Flower Petals of Rosa rugosa thunb

Tsutomu Hatano, Noboru Ogawa, Taeko Yasuhara, Takuo Okuda

Research output: Contribution to journalArticle

48 Citations (Scopus)


Three new hydrolyzable tannins, rugosins A (1), B (2) and C (3), were isolated from flower petals of Rosa rugosa thunb. (Rosaceae), and their structures, including the orientation of the valoneoyl group, were established based on chemical evidence and spectroscopic analysis, utilizing two-dimensional nuclear magnetic resonance spectral data.

Original languageEnglish
Pages (from-to)3308-3313
Number of pages6
JournalChemical and Pharmaceutical Bulletin
Issue number12
Publication statusPublished - Jan 1 1990



  • 2D-NMR
  • Rosa rugosa flower petal
  • Rosaceae rugosin A
  • hydrolyzable tannin
  • rugosin B
  • rugosin C
  • tannin hydrolyzable tannin
  • valoneoyl group

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery

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