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Collision‐induced dissociation of glycoside–alkali metal adduct ions in fast atom bombardment mass spectrometry
Author(s) -
Takayama Mitsuo
Publication year - 1993
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210280810
Subject(s) - chemistry , moiety , fast atom bombardment , adduct , dissociation (chemistry) , aglycone , mass spectrometry , collision induced dissociation , mass spectrum , alkali metal , ion , metal , electrospray ionization , stereochemistry , crystallography , glycoside , inorganic chemistry , medicinal chemistry , tandem mass spectrometry , organic chemistry , chromatography
The collision‐induced dissociation (CID) spectra of glycoside–alkali metal adduct ions [M + C] + (C = Li, Na, K and Rb) produced under fast atom bombardment (FAB) conditions are reported. The results obtained suggested that the CID spectra of the [M + C] + ions of some flavonoid glycosides reflect the coordination structures because the CID patterns generally changed with the metal cation size. In diglycosides, the CID spectra showed that the relatively small cations Li + and Na + rather bind to the sugar moiety, whereas the large cations K + and Rb + rather bind to the aglycone moiety. In monoglycosides, the cations C + rather bind to the aglycone moiety. It was concluded that the CID technique combined with FAB is useful for the structural elucidation of [M + C] + ions and, in principle, the CID spectra reflect the coordination structures in the gas phase.