Tannins and related compounds. LIX. Aesculitannins, novel proanthocyandins with doubly-bonded structures from aesculus hippocastanum L.
S MORIMOTO, GENI NONAKA…
Index: Morimoto, Satoshi; Nonaka, Gen-ichiro; Nishioka, Itsuo Chemical & Pharmaceutical Bulletin, 1987 , vol. 35, # 12 p. 4717 - 4729
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Citation Number: 50
Abstract
A chemical examination of the seed shells of Aesculus hippocastanum L. has led to the isolation of proanthocyanidins A-6 (10) and A-7 (11), and aesculitannins A (12), B (13), C (14), D (15), E (16), F (17) and G (18). On the basis of chemical and spectroscopic evidence, proanthocyanidins A-6 (10) and A-7 (11) have been determined to be A-type dimers each possessing a C-4, C-6 interflavanoid linkage, while aesculitannins A (12), B (13), C (14), D ...
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