Studies on xanthones from aerial parts of Polygala sibirica / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the chemical constituents of the aerial parts of Polygala sibirica systematically.</p><p><b>METHODS</b>The chemical constituents were isolated by various column chromatographic methods. The structures were identified by spectral data.</p><p><b>RESULT</b>Ten compounds were isolated and identified as 6-hydroxy-1, 2, 3, 7-tetramethoxy xanthone (1); 1, 2, 3, 6, 7-heptamethoxy xanthone (2); 1, 7-didydroxy-2, 3-methylenedioxy xanthone (3); 1, 7-dihydroxy-2, 3-dimethoxy xanthone (4); 1, 3, 7-trihydroxy-2-methoxy xanthone (5); 1, 6, 7-trihydroxy-2, 3-dimethoxy xanthone (6); alpha-spinasterol (7); alpha-spinasterolic-3-O-beta-D-glucoside (8); squalene (9) and polygital (10).</p><p><b>CONCLUSION</b>Compounds 1-10 were isolated from this species for the first time.</p>

Triterpenoids from leaves of Ilex cornuta / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the chemical constituents of Ilex cornuta.</p><p><b>METHOD</b>The chemical constituents were isolated by column chromatographic methods. And the structures were identified by spectral data.</p><p><b>RESULT</b>Seven compounds were isolated and identified as follows: 2alpha-hydroxy ursolic acid (1), arjunolic acid (2), 23-hydroxy ursolic acid (3), 27-0-p-(Z) -coumaroyl ursolic acid (4), 27-O-p-(E)-coumaroyl ursolic acid (5), asiatic acid (6).</p><p><b>CONCLUSION</b>Compound 1, 2 were obtained from this genus for the first time and 3-6 from this plant for the first time.</p>