New γ-Pyrone Glucoside, and Dimeric Ellagitannins from Gordonia axillaris

Chyurng Wern CHANG; Ling Ling YANG; Kun Ying YEN; Tsutomu HATANO; Takashi YOSHIDA; Takuo OKUDA

doi:10.1248/cpb.42.1922

Chyurng Wern CHANG, Ling Ling YANG, Kun Ying YEN, Tsutomu HATANO, Takashi YOSHIDA, Takuo OKUDA

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Keywords: Gordonia axillaris, Theaceae, galloylated maltol glucoside, ellagitannin, camelliin B

JOURNAL FREE ACCESS

1994 Volume 42 Issue 9 Pages 1922-1923

DOI https://doi.org/10.1248/cpb.42.1922

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Abstract

A new acylated γ-pyrone glucoside was isolated from the leaf extract of Gordonia axillaris (Theaceae), and was characterized as 3-O-(6'-O-galloyl)-β-D-glucopyranosylmaltol (7) based on two-dimensional NMR experiments and other spectroscopic analyses. 5-O-(6'-O-Galloyl)-β-D-glucopyranosylgentisic acid (6), and two dimeric hydrolyzable tannins [camelliin B (4) and schimawalin B (5)] were also isolated.

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