Tannins of Theaceous Plants. II. : Camelliins A and B, Two New Dimeric Hydrolyzable Tannins from Flower Buds of Camellia japonica L. and Camellia sasanqua THUNB.

Takashi YOSHIDA; Tong CHOU; Yasuhiko MARUYAMA; Takuo OKUDA

doi:10.1248/cpb.38.2681

Takashi YOSHIDA, Tong CHOU, Yasuhiko MARUYAMA, Takuo OKUDA

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Keywords: Camellia japonica, Camellia sasanqua, Theaceae, ellagitannin, dimeric hydrolyzable tannin, camelliin A, camelliin B, macrocyclic structure

JOURNAL FREE ACCESS

1990 Volume 38 Issue 10 Pages 2681-2686

DOI https://doi.org/10.1248/cpb.38.2681

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Abstract

Two new dimeric hydrolyzable tannins, camelliins A and B, which exist as equilibrium mixtures of anomers, have been isolated from flower buds of Camellia japonica L., and their structures were elucidated. Camelliin B belongs to a unique class of dimers having a macrocyclic structure. The flower of Camellia sasanqua THUNB. yielded five tannins which were identical with those of C. japonica.

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