scholarly journals Generation and characterization of ionic and neutral [HS-P-OH]+/· and S=P(OH)2+/· in the Gas Phase by Tandem Mass Spectrometry and Computational Chemistry

2005 ◽  
Vol 16 (8) ◽  
pp. 1353-1366 ◽  
Author(s):  
R. Srikanth ◽  
P. Nagi Reddy ◽  
K. Bhanuprakash ◽  
R. Srinivas ◽  
Xiaohong Chen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Computational Chemistry ◽  
Gas Phase ◽  
Tandem Mass

Gas-phase fragmentation of protonated piplartine and its fungal metabolites using tandem mass spectrometry and computational chemistry

2017 ◽  
Vol 52 (8) ◽  
pp. 517-525 ◽  
Author(s):  
E. A. da Silva-Junior ◽  
C. R. Paludo ◽  
D. R. Gouvea ◽  
M. J. Kato ◽  
N. A. J. C. Furtado ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Computational Chemistry ◽  
Gas Phase ◽  
Tandem Mass ◽  
Fungal Metabolites ◽  
Gas Phase Fragmentation

Gas-Phase Reactivity of Glycosides and Methyl Glycosides with Cu+, Ag+ and Pb2+ Ions by Fast-Atom Bombardment and Tandem Mass Spectrometry

2001 ◽  
Vol 7 (4-5) ◽  
pp. 321-330 ◽  
Author(s):  
Jean-Yves Salpin ◽  
Laurence Boutreau ◽  
Violette Haldys ◽  
Jeanine Tortajada
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Gas Phase ◽  
Fast Atom Bombardment ◽  
The Other ◽  
Tandem Mass ◽  
Pyranose Ring ◽  
Analytical Potential ◽  
Anomeric Center

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.

Generation and characterization of ionic and neutral (CH3OBH)+/· and (CH3BOH)+/· in the gas phase by tandem mass spectrometry

2000 ◽  
Vol 202 (1-3) ◽  
pp. 315-322 ◽  
Author(s):  
Ragampeta Srinivas ◽  
Shetty Vivekananda ◽  
Stephen J. Blanksby ◽  
Detlef Schröder ◽  
Moschoula A. Trikoupis ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Gas Phase ◽  
Tandem Mass
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