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Determination of Linkage Position in Per-O-methylated Xylooligosaccharides by MIKE and CID Mass Spectra of Ammonia and Methylamine Cluster Ions

V. Kováčik, J. Hirsch, and V. Pätoprsty

Institute of Chemistry, Slovak Academy of Sciences, SK-842 38 Bratislava

 

Abstract: The linkage types 1→2, 1→3, and 1→4 of D-xylobioses can be distinguished based on the unimolecular decomposition spectra (MIKE) of the cluster [M + NH4]+ ions or by collision-induced dissociation (CID) mass spectra of [M + CH3NH3]+ ions of per-O-methylated compounds. The MIKE spectra of [M + NH4]+ and [M + CH3NH3]+ adducts allow the determination of linkage positions between the xylose residues in per-O-methylated o-xylotrioses. The branching point of the branched trisaccharides can be deduced from these mass spectra, too.

Full paper in Portable Document Format: 486a422.pdf

 

Chemical Papers 48 (6) 422–425 (1994)

Thursday, January 27, 2022

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