Tannins of Theaceous Plants. III. Camelliatannins A and B, Two New Complex Tannins from Camellia japonica L

Tsutomu Hatano; Shoko Shida; Li Han; Takuo Okuda

doi:10.1248/cpb.39.876

Tannins of Theaceous Plants. III. Camelliatannins A and B, Two New Complex Tannins from Camellia japonica L

Tsutomu Hatano, Shoko Shida, Li Han, Takuo Okuda

Research output: Contribution to journal › Article › peer-review

16 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-(iS 'x2018;)-hexahydroxydiphenoyl-D-glucose (6) were also isolated from the leaves.

Original language	English
Pages (from-to)	876-880
Number of pages	5
Journal	Chemical and Pharmaceutical Bulletin
Volume	39
Issue number	4
DOIs	https://doi.org/10.1248/cpb.39.876
Publication status	Published - 1991

Keywords

C-glucosidic ellagitannin
Camellia japonica
ROESY
Theaceae
camelliatannin A
camelliatannin B
casuariin
complex tannin
epicatechin
tannin

ASJC Scopus subject areas

Chemistry(all)
Drug Discovery

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AU - Shida, Shoko

AU - Han, Li

AU - Okuda, Takuo

PY - 1991

Y1 - 1991

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Tannins of Theaceous Plants. III. Camelliatannins A and B, Two New Complex Tannins from Camellia japonica L

Abstract

Keywords

ASJC Scopus subject areas

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