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PubMed · 8862040

Xanthones from Hypericum roeperanum.

G Rath·O Potterat·S Mavi·K Hostettmann
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Abstract

Four new xanthones have been isolated from the roots of Hypericum roeperanum. Their structures have been established by a combination of spectroscopic and chemical methods as 1,6-dihydroxy-5-methoxy-4',5'-dihydro-4',4',5'-trimethylfurano- (2',3':3,4)-xanthone (5-O-methyl-2-deprenylrheediaxanthone B), 1,6-dihydroxy-5-methoxy-6',6'-dimethylpyrano-(2',3':3,4)-xanthone (5-O-methylisojacareubin), 1,3,5,6-tetrahydroxy-2-(2',2'-dimethyl-4'-isopropenyl)-cyclopen tanylxanthone (5-O-demethylpaxanthonin) and 1,3,5,6-tetrahydroxy-4-trans-sesquilavandulylxanthone (roeperanone). In addition, 2-hydroxyxanthone, 5-hydroxy-2-methoxyxanthone, 1,5-dihydroxy-2-methoxyxanthone, 2-deprenyl rheediaxanthone B, isojacareubin and calycinoxanthone D have been isolated and characterized. Some of the isolated xanthones exhibited antifungal activity against Candida albicans.

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Antifungal AgentsCandida albicansMagnetic Resonance SpectroscopyMicrobial Sensitivity TestsMolecular StructureOptical RotationStructure-Activity RelationshipXanthenesXanthonesJournal ArticleResearch Support, Non-U.S. Gov't

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G Rath, O Potterat, S Mavi, K Hostettmann. 1996. Xanthones from Hypericum roeperanum.. https://doi.org/10.1016/0031-9422(96)00284-1

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