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Abstract
A new tetraoxygenated xanthone, daphnifolin (1,3,5-trihydroxy-4-methoxyxanthone), along with three other xanthones, were isolated from the stem bark extracts of Mesua daphnifolia. Their structures were characterized on the basis of 1D and 2D NMR spectral data.
Acknowledgements
We gratefully acknowledge financial support provided by the Malaysian Government IRPA programme and we are grateful to Mr. Mohd Johadi Iskandar for recording NMR spectra.