Abstract
Repeated column chromatography of the n-BuOH fraction of the 70 % EtOH of the dried leaves of Bombax malabaricum led to the isolation of mangiferin, a xanthone. Mangiferin was identified by UV,
1H- and 13C-NMR spectroscopy and electrospray mass spectrometry. It was found to be identical
to shamimin, a compound for which originally a flavonol structure was proposed, and
the structure of which has to be revised.
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Dr. A. A. Shahat
Department of Pharmaceutical Sciences
University of Antwerp
Universiteitsplein 1
2610 Antwerp
Belgium
Fax: +32 3 820 27 09
eMail: shahat@uia.ua.ac.be
