Studies on xanthones from herbs of Polygala telephioides / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constituents from the whole plants of Polygala telephioides.</p><p><b>METHOD</b>Compounds were isolated by repeated silica gel and Sephadex LH -20 column chromatography, and their structures were determined by spectral analysis and physicochemical properties.</p><p><b>RESULT</b>Six xanthones were isolated from P. telephioides, and their structures were identified as 1, 3, 7-trihydroxyxanthone (1), 1, 7-dihydroxy-3-methoxyxanthone (2), 1, 3-dihydroxyxanthone (3), 1, 7-dihydroxyxanthone (4), 1-methoxy-2, 3-methylenedioxyxanthone (5) and 1, 7-dimethoxyxanthone (6).</p><p><b>CONCLUSION</b>All the compounds were obtained from this plant for the first time.</p>