[Study on flavonoids in leaves of Apocynum ventum].Zhongguo Zhong Yao Za Zhi. 2006 Aug; 31(16):1337-40.ZZ
To study the flavonoids in the leaves of Apocynum ventum.
Compounds were separated by repeated polyacrylamide column chromatgraphy combined with Sephadex LH-20 column chromatgraphy, their structures were confirmed by the analysis of spectral data and physicochemical properties.
Six compounds were isolated from A. ventum. They were elucidated as quercetin (1), kaempferol (2), kaempferol-3-O-(6"-O-acetyl)-beta-D-glucopyranoside (3), quercetin-3-O-(6"-O-acetyl)-beta-D-glucopyranoside (4), quercetin-3-O-(6"-O-acetyl)-beta-D-galactopyranoside (5), kaempferol-7-O-alpha-L-rhamnopyranoside (6).
Compound 5 and 6 were isolated from the genus Apocynum for the first time.