Abstract
1H and 13C NMR spectra of 8-C-beta-D-[2-O-(E)-p-coumaroyl] glucopyranosyl-2-(2-hydroxy)propyl-7-methoxy-5-methylchromone were completely assigned by 2D NMR observations. Especially the 1H assignments of the glucosyl and hydroxyl protons were achieved by utilizing HMQC, HMBC, 1H-1H COSY and DEPT techniques together with a heavy water exchange 1H NMR experiment.
Copyright 2004 John Wiley & Sons, Ltd.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Aloe / metabolism*
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Carbon Isotopes
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China
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Chromones / analysis*
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Chromones / chemistry
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Chromones / standards*
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Computer Simulation
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Magnetic Resonance Spectroscopy / methods*
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Magnetic Resonance Spectroscopy / standards*
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Models, Chemical*
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Models, Molecular*
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Plant Extracts / analysis
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Plant Extracts / chemistry
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Plant Extracts / standards
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Protons
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Reference Standards
Substances
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Carbon Isotopes
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Chromones
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Plant Extracts
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Protons