Tannins and related compounds. XX. Two new ellagitannins containing a proto-quercitol core from Quercus stenophylla Makino. (4).
- 1 January 1984
- journal article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 32 (5) , 1750-1753
- https://doi.org/10.1248/cpb.32.1750
Abstract
A new class of ellagitannins (1 and 2) possessing a proto-quercitol moiety has been isolated from the bark of Quercus stenophylla MAKINO (Fagaceae), and their structures have been characterized from the chemical and spectroscopic evidence as 1, 5-di-O-galloyl-3, 4-(S)-hexahydroxydiphenoyl proto-quercitol (1) and 5-O-galloyl-3, 4-(S)-hexahydroxydiphenoyl protoquercitol (2).Keywords
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