Tannins of theaceous plants. III. Camelliatannins A and B, two new complex tannins from Camellia japonica L.

Tsutomu Hatano, S. Shida, L. Han, T. Okuda

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Two new complex tannins, camelliatannins A (1) and B (2), were isolated from the leaves of Camellia japonica L. (Theaceae). The structures of these tannins, each consisting of a C-glucosidic ellagitannin and (-)-epicatechin (9), were established by means of chemical degradation, synthesis from casuariin (4) and 9, and rotating frame Overhauser enhancement spectroscopy (ROESY). Gemin D (3), 4, pedunculagin (5) and 2,3-(S)-hexahydroxydiphenoyl-D-glucose (6) were also isolated from the leaves.

Original languageEnglish
Pages (from-to)876-880
Number of pages5
JournalChemical and Pharmaceutical Bulletin
Volume39
Issue number4
Publication statusPublished - 1991

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Camellia
Tannins
Theaceae
Catechin
Spectrum Analysis
Spectroscopy
Glucose
Degradation
camelliatannin A

ASJC Scopus subject areas

  • Chemistry(all)
  • Organic Chemistry
  • Drug Discovery
  • Pharmacology

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Tannins of theaceous plants. III. Camelliatannins A and B, two new complex tannins from Camellia japonica L. / Hatano, Tsutomu; Shida, S.; Han, L.; Okuda, T.

In: Chemical and Pharmaceutical Bulletin, Vol. 39, No. 4, 1991, p. 876-880.

Research output: Contribution to journalArticle

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