来自牛角瓜的黄酮醇苷。

Flavonol glycosides from Calotropis gigantea.

作者信息

Sen S, Sahu N P, Mahato S B

机构信息

Indian Institute of Chemical Biology, Jadavpur, Calcutta.

出版信息

Phytochemistry. 1992 Aug;31(8):2919-21. doi: 10.1016/0031-9422(92)83668-o.

DOI:10.1016/0031-9422(92)83668-o

PMID:1368420

Abstract

Besides isolation and characterization of isorhamnetin-3-O-rutinoside, isorhamnetin-3-O-glucopyranoside and taraxasteryl acetate, a new flavonol trisaccharide was isolated from the aerial parts of Calotropis gigantea, and its structure was established as isorhamnetin-3-O-[2-O-beta-D-galactopyranosyl-6-O-alpha-L-rhamnopy ranosyl]- beta-D-glucopyranoside by a combination of fast atom bombardment mass spectroscopy, 1H and 13C NMR spectra and some chemical degradations.

摘要

除了分离和鉴定异鼠李素-3-O-芸香糖苷、异鼠李素-3-O-吡喃葡萄糖苷和蒲公英赛醇乙酸酯外，还从牛角瓜地上部分分离出一种新的黄酮醇三糖，并通过快原子轰击质谱、1H和13C NMR光谱以及一些化学降解方法相结合，确定其结构为异鼠李素-3-O-[2-O-β-D-吡喃半乳糖基-6-O-α-L-吡喃鼠李糖基]-β-D-吡喃葡萄糖苷。