Related Experiment Video
Updated: Jun 4, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Three new flavonoids from the active extract of Fallopia convolvulus
Chao-Feng Zhang1, Jing Chen, Li-Qing Zhao
1Key Laboratory of Modern Chinese Medicines, Ministry of Education, Research Department of Pharmacognosy, China Pharmaceutical University, Nanjing, China. njchaofeng@126.com
Abstract:
Five solvent extracts (ethanol, petroleum ether, EtOAC, n-butanol, and water) from Fallopia convolvulus (L.) Love were separated and their inhibitory effects on nitric oxide production in lipopolysaccharide-activated macrophages were evaluated. Three new flavonoids, falloconvolin A (1), falloconvolin B (2), and quercetin-3-O-(2-E-sinapoxyl)-glucopyranoside (3), together with 17 known phenolic compounds, were isolated from the active EtOAC extract, and their structures were elucidated on the basis of spectroscopic analysis and literature data.
