Study on flavonoids in leaves of Apocynum ventum / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the flavonoids in the leaves of Apocynum ventum.</p><p><b>METHOD</b>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.</p><p><b>RESULT</b>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).</p><p><b>CONCLUSION</b>Compound 5 and 6 were isolated from the genus Apocynum for the first time.</p>