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A new acylated flavonol triglycoside from Carrichtera annua
K A Abdel-Shafeek1, M M El-Messiry, A A Shahat
1Pharmacognosy and Phytochemistry of Medicinal Plants Department, National Research Centre, 12311 Dokki, Cairo, Egypt.
Journal of Natural Products
|June 28, 2000
Abstract:
A new acylated flavonol triglycoside, quercetin 3-O-[(6-feruloyl-beta-glucopyranosyl)-(1-->2)-beta-arabinopyran oside] -7-O-beta-glucopyranoside (1), as well as the known flavonoid quercetin, were isolated from the whole plants of Carrichtera annua. The structure of 1 was established by UV, MS, and 1D and 2D NMR spectroscopy, including DEPT, DQF-COSY, TOCSY, HSQC, HSQC-TOCSY, and HMBC experiments.