Studies on the chemical constituents of Knoxia corymbosa / 药学学报

ABSTRACT

<p><b>AIM</b>To study the chemical constituents of Knoxia corymbosa Willd.</p><p><b>METHODS</b>Chromatography was used to isolate and purify the chemical constituents, their structures were identified by spectral analysis.</p><p><b>RESULTS</b>Four flavonol glycosides were identified as quercetin-7-O-alpha-L-arabinosyl-3-O-beta-D-6"-acetylglucopyranoside (1), kaempferol-7-O-alpha-L-arabinosyl-3-O-beta-D-glucopyranoside (2), quercetin-3-O-beta-D-glucopyranoside (3), quercetin-3-O-beta-D-6"-acetylglucopyranoside (4).</p><p><b>CONCLUSION</b>Compound 1 is a new flavonol glycoside. The other flavonol glycosides were isolated from Knoxia corymbosa Willd for the first time.</p>