| 标题 |
[Daviditin B from Swertia davidi Franch]
[来自Swertia davidi Franch的Daviditin B]
相关领域
黄原酮
化学
苯
立体化学
龙胆科
柱色谱法
有机化学
植物
生物
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AI链接 nih.gov |
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| 其它 |
1.作者：Gui-shan Tan 1, Kang-ping Xu, Fu-shuang Li, Ping-sheng Xu, Gao-yun Hu, De-jian Jiang, Yuan-jian Li 2.PMID: 15040088 3.Abstract： Aim: To study the active constituents of Swertia davidi Franch. Methods: Chemical components were isolated by column chromatography and their structures were established mainly by spectroscopic means (UV, IR, NMR, 2D-NMR, MS). Results: Three substances were identified as 2,5-dimethoxyl-1, 4-dicarboxyl benzene (VIII), 1,5,8-trihydroxyl-3,4-dimethoxyl xanthone (IX) and 1,8-dihydroxyl-3-(3'-hydroxyl-butoxy) xanthone (X). Conclusion: Compounds VIII and IX were isolated from Swertia davidi Franch, for the first time, whereas compound X is a new xanthone, named daviditin B with antioxygenated activity in vitro. |
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