Internal glucose residue loss in protonated O-diglycosyl flavonoids upon low-energy collision-induced dissociation.

@article{Ma2000InternalGR,
  title={Internal glucose residue loss in protonated O-diglycosyl flavonoids upon low-energy collision-induced dissociation.},
  author={Ying Li Ma and Irina Vedernikova and Hilde van den Heuvel and Magda Claeys},
  journal={Journal of the American Society for Mass Spectrometry},
  year={2000},
  volume={11 2},
  pages={136-44}
}
The low-energy collision-induced dissociation of protonated flavonoid O-diglycosides, i.e., flavonoid O-rutinosides and O-neohesperidosides, containing different aglycone types has been studied. The results indicate that the unusual [M + H - 162]+ ion formed by internal glucose residue loss, which in a previous study was shown to be a rearrangement ion, is strongly dependent upon the aglycone type. For 7-O-diglycosides, the internal glucose loss is very pronounced for aglycones of the flavanone… CONTINUE READING

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