Tannins of Theaceous Plants: II: 1) Camelliins A and B, Two New Dimeric Hydrolyzable Tannins from Flower Buds of Camellia japonica L, and Camellia sasanqua thunb

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 buds of Camellia sasanqua thunb. yielded five tannis which were identical with those of C. japonica. © 1990, The Pharmaceutical Society of Japan. All rights reserved.