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Chemical Constituents from Garcinia bracteata and Ultra Performance Liquid Chromatography/Mass Spectrometry Guided Isolation of Tautomers
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- Author:
- No author available
- Journal Title:
- Natural Product Research and Development
- Issue:
- 8
- DOI:
- 10.3969/j.issn.1001-6880.2012.08.010
- Key Word:
- 大苞藤黄;化学成分;口山酮;互变异构体;超高效液相色谱分析;Garcinia bracteata;chemical constituent;prenylated xanthone;tautomers;UPLC analysis
Abstract： Eleven compounds have been isolated from the twigs of Garcinia Bracteata.Their structures were identified on the basis of spectroscopic analysis and chemical evidence:neobractatin ( 1 ),brasixanthone B (2),5-O-methylxanthone V1 (3),10-O-methylmacluraxanthone (4),isobractatin (5),xanthone V1 (6),xerophenone A (7),xerophenone B (8),bractatin ( 9),macluraxanthone (10) and 3-O-methylneobractatin (11).Tautomers (7) and (8) were firstly confirmed on the basis of Ultra Performance Liquid Chromatography/Mass Spectrometry (UPLC/MS).Among them,compounds 6-8 were isolated from G.bracteata for the first time.
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