Abstract
Two new xanthones, pyranocycloartobiloxanthone A (1) and dihydroartoindonesianin C (2), were isolated from the stem bark of Artocarpus obtusus Jarrett by chromatographic separation. Their structures were determined by using spectroscopic methods and comparison with known related compounds. Pyranocycloartobiloxanthone A (1) showed strong free radical scavenging activity by using DPPH assay as well as cytotoxicity towards K562, HL-60, and MCF7 cell lines.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Artocarpus / chemistry*
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Biphenyl Compounds / pharmacology
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Drug Screening Assays, Antitumor
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Free Radical Scavengers / chemistry
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Free Radical Scavengers / isolation & purification*
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Free Radical Scavengers / pharmacology
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Malaysia
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Picrates / pharmacology
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Plant Bark / chemistry
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Plants, Medicinal / chemistry*
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Xanthones / chemistry
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Xanthones / isolation & purification*
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Xanthones / pharmacology
Substances
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Biphenyl Compounds
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Free Radical Scavengers
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Picrates
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Xanthones
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dihydroartoindonesianin C
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pyranocycloartobiloxanthone A
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1,1-diphenyl-2-picrylhydrazyl