Isolation of mangiferin from Bombax malabaricum and structure revision of shamimin.
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.
Shahat
Abdelaaty A
AA
Department of Pharmaceutical Sciences, National Research Centre, Dokki, Cairo, Egypt. shahat@uia.ua.ac.be
Hassan
Rasmeia A
RA
Nazif
Naglaa M
NM
Van Miert
Sabine
S
Pieters
Luc
L
Hammuda
Faiza M
FM
Vlietinck
Arnold J
AJ
D035163:Bombax; D005419:Flavonoids / Q000737:chemistry*; D005947:Glucose / Q000031:analogs & derivatives* / Q000737:chemistry*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves; D044004:Xanthones / Q000737:chemistry*
D005419:Flavonoids; D010936:Plant Extracts; D044004:Xanthones; C119820:shamimin; C013592:mangiferin; D005947:Glucose