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Characterization of flavone and flavonol aglycones by collision-induced dissociation tandem mass spectrometry

✍ Scribed by Y. L. Ma; Q. M. Li; H. Van den Heuvel; M. Claeys

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 177 KB
Volume: 11
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(199708)11:12<1357::aid-rcm983>3.0.co;2-9

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✦ Synopsis

A mass spectrometric method based on the combined use of fast atom bombardment collisionally-induced dissociation (CID) and tandem mass spectrometry has been used for the structural characterization of free and conjugated flavone and flavonol aglycones. Low-energy CID spectra of the [M + H] + (or Y 0 + ) ions show simple fragmentation patterns, which allow characterization of the substituents in the A and B rings and, in particular, differentiation between flavones and flavonols. A systematic nomenclature for product ions produced from protonated molecules under CID conditions is proposed.

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