Aim To study the chemical constituents of Polygala aureocauda Dunn.. Methods Chemical compounds were isolated by column chromatography and their structures were determined mainly by spectroscopic means (UV, IR, MS, ^1...Aim To study the chemical constituents of Polygala aureocauda Dunn.. Methods Chemical compounds were isolated by column chromatography and their structures were determined mainly by spectroscopic means (UV, IR, MS, ^1HNMR, ^13CNMR, HMQC, HMBC). Results Three compounds were isolated and identified as 3-hydroxy-1,4-dimethoxyxanthone (Ⅰ), 1,7-dihydroxy-2,3-methylendioxyxanthone ( Ⅱ ), 7-hydroxy-1-methoxy-2, 3-methylendioxyxanthone ( Ⅲ ). Conclusion Compounds Ⅰ -Ⅲ were isolated from Polygala aureocauda Dunn. for the first time, whereas compound Ⅰ is a new xanthone.展开更多
文摘Aim To study the chemical constituents of Polygala aureocauda Dunn.. Methods Chemical compounds were isolated by column chromatography and their structures were determined mainly by spectroscopic means (UV, IR, MS, ^1HNMR, ^13CNMR, HMQC, HMBC). Results Three compounds were isolated and identified as 3-hydroxy-1,4-dimethoxyxanthone (Ⅰ), 1,7-dihydroxy-2,3-methylendioxyxanthone ( Ⅱ ), 7-hydroxy-1-methoxy-2, 3-methylendioxyxanthone ( Ⅲ ). Conclusion Compounds Ⅰ -Ⅲ were isolated from Polygala aureocauda Dunn. for the first time, whereas compound Ⅰ is a new xanthone.
