Differentiation of 6-C- and 8-C-glycosidic flavonoids by positive ion fast atom bombardment and tandem mass spectrometry
β Scribed by Q. M. Li; H. Van den Heuvel; L. Dillen; M. Claeys
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 634 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
The present study deals with the use of liquid secondary ion mass spectrometry in combination with collisionally activated dissociation and linked scanning at constant BIE for differentiation and structural analysis of 6-C-and 8-C-glycosidic flavonoids in the positive ion mode. Flavonoids of mono-C-glycosidic nature were investigated. Special emphasis is given to the rationalization of fragment ions which allow differentiation between isomers.
π SIMILAR VOLUMES
Positive-ion fast atom bombardment maw spectrometry appears to be a useful method for the differentiation of anomeric C-glycosides. The mass-analysed ion kinetic energy (MIKE) and collision-activated dissociation (CAD) MIKE spectra of selected positive ions can be used as fingerprints of the a-or /$
Three flavonoid glycosides isolated from plants were identified using fast atom bombardment mass spectrometry and gas chromatography/mass spectrometry. In the latter studies, electron impact and ammonia chemical ionization were used.