title: Isolation of mangiferin from Bombax malabaricum and structure revision of shamimin.
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.
authors.affiliation: Department of Pharmaceutical Sciences, National Research Centre, Dokki, Cairo, Egypt. shahat@uia.ua.ac.be
authors.forename: Abdelaaty A
authors.initials: AA
authors.lastname: Shahat
authors.forename: Rasmeia A
authors.initials: RA
authors.lastname: Hassan
authors.forename: Naglaa M
authors.initials: NM
authors.lastname: Nazif
authors.forename: Sabine
authors.initials: S
authors.lastname: Van Miert
authors.forename: Luc
authors.initials: L
authors.lastname: Pieters
authors.forename: Faiza M
authors.initials: FM
authors.lastname: Hammuda
authors.forename: Arnold J
authors.initials: AJ
authors.lastname: Vlietinck
mesh_terms: 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*
chemical_list: D005419:Flavonoids; D010936:Plant Extracts; D044004:Xanthones; C119820:shamimin; C013592:mangiferin; D005947:Glucose