Discrimination between pentose oligosaccharides containing D-xylopyranose or L-arabinofuranose as non-reducing terminal residue using fast atom bombardment mass spectrometry.
Collisional-induced dissociation (CID) mass spectra of the [M + H](+) and [M - H](-) ions obtained under fast atom bombardment conditions of a number of methyl glycoside di-, tri- and tetrasaccharides, containing D-xylopyranosyl and/or L-arabinofuranosyl residues at the non-reducing terminus, do not provide information about their ring size. This information could only be obtained from a careful comparison of the intensity ratio of the [M + Na - 90](+) and [M + Na - 104](+) ions ((0,2)X(t)/(1,5)X(t)) in the high-energy CID spectra of the sodium-cationized di-, tri- and probably also tetrasaccharide compounds.
Kovácik
V
V
Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 842 38 Bratislava, Slovak Republic. chemvkov@savba.sk
Pätoprstý
V
V
Hirsch
J
J
D001089:Arabinose / Q000031:analogs & derivatives / Q000032:analysis*; D009844:Oligosaccharides / Q000032:analysis*; D016339:Spectrometry, Mass, Fast Atom Bombardment / Q000379:methods*; D014994:Xylose / Q000031:analogs & derivatives / Q000032:analysis*
D009844:Oligosaccharides; C431714:arabinofuranose; C431715:xylopyranose; D014994:Xylose; D001089:Arabinose