[New oxindole alkaloid glycosides from Uncaria sinensis].
作者信息
Liu H M, Jiang Z, Feng X Z
机构信息
Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing.
出版信息
Yao Xue Xue Bao. 1993;28(11):849-53.
PMID:8010002
Abstract
Two 16-carboxy derivatives of pentacyclic oxindole alkaloids and its glucopyranosyl esters have been isolated from the ethanolic extract of the leaves of Uncaria sinensis (Olive.) Havil. These structures were deduced on the basis of spectroscopic evidences and chemical correlations, and named mitraphyllic acid (I), isomitraphyllic acid (II), isomitraphyllic acid (16-1)-beta-D-glucopyranosyl ester (III) and mitraphyllic acid (16-1)-beta-D-glucopyranosyl ester (IV).
摘要
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