Chemical constituents from Neo-Taraxacum siphonathum / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constituents from the antioxidant fraction of Neo-Taraxacum siphonathum.</p><p><b>METHOD</b>Various chromatographic techniques were used to isolate and purify the constituents. The structures were elucidated on the basis of chemical evidence and spectral analysis.</p><p><b>RESULT</b>Ten compounds were isolated and identified from Neo-T. siphonathum, caffeic acid (1), chlorogenic acid (2), quercetin (3), luteolin (4), quercetin-3-O-beta-D-glucopyranoside (5), quercetin-3-O-alpha-D-arabinofuranoside (6), quercetin-3-O-alpha-D-arabinopyranoside (7), luteolin-7-O-beta-D-glucopyranoside (8), beta-sitosterol (9) and daucosterol (10).</p><p><b>CONCLUSION</b>Compounds 1-10 were isolated from this plant for the first time.</p>