Two flavone glycosides from Chinese traditional medicine Amomum villosum / 中国中药杂志

<p><b>OBJECTIVE</b>To study the water soluble constituents from Amomum villosum.</p><p><b>METHOD</b>The constituents were separated and purified with chromatographic methods, identified by NMR, MS, UV and IR.</p><p><b>RESULT</b>Two quercetin glycosides: quercitrin (quercetin-3-O-alpha-L-rhamnoside I) and isoquercitrin (quercetin-3-O-beta-D-glucoside II) were isolated and identified.</p><p><b>CONCLUSION</b>I and II were isolated for the first time from A. villosum.</p>