Characterization of Protonated Substituted Ureas by Using Diagnostic Gas-Phase Ion-Molecule Reactions Followed by Collision-Activated Dissociation in Tandem Mass Spectrometry Experiments

Author(s):  
Erlu Feng ◽  
Xin Ma ◽  
Hilkka I. Kenttämaa
2020 ◽  
Vol 92 (11) ◽  
pp. 7471-7477 ◽  
Author(s):  
Leah F. Easterling ◽  
Ravikiran Yerabolu ◽  
Rashmi Kumar ◽  
Kawthar Z. Alzarieni ◽  
Hilkka I. Kenttämaa

2008 ◽  
Vol 22 (21) ◽  
pp. 3382-3392 ◽  
Author(s):  
Andreina Ricci ◽  
Antonio Fiorentino ◽  
Simona Piccolella ◽  
Annunziata Golino ◽  
Federico Pepi ◽  
...  

2001 ◽  
Vol 7 (4-5) ◽  
pp. 321-330 ◽  
Author(s):  
Jean-Yves Salpin ◽  
Laurence Boutreau ◽  
Violette Haldys ◽  
Jeanine Tortajada

The analytical potential of the complexation of three isomeric monosaccharides (D-glucose, D-galactose, D-fructose)and two methyl glycosides ( O-methyl-α-D-glucose and O-methyl-β-D-glucose)by three metal ions, Ag+, Cu+ and Pb2+, has been investigated by fast-atom bombardment (FAB)ionization and tandem mass spectrometry. Our results have shown that the unimolecular reactivity of Ag+ complexes allows the characterization of the C(4)stereochemistry of the pyranose ring, whereas a distinction between D-glucose and D-fructose is not achieved. On the other hand, each of the three [Cu + monosaccharide]+ complexes exhibits specific dissociation patterns. We have also observed that Pb2+ ions induce the richest reactivity and are of particular interest for the identification of the three isomers. Finally, this study has demonstrated that the stereochemistry of the anomeric center of O-methyl-D-glucose is easily determined by reaction with Ag+ or Pb2+ ions. Several mechanisms are proposed to account for the main fragmentations of cationized glucose.


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