T. Yamagaki et al., DETERMINATION OF STRUCTURAL ISOMERS OF XYLOGLUCAN OCTASACCHARIDES USING POST-SOURCE DECAY FRAGMENT ANALYSIS IN MALDI-TOF MASS-SPECTROMETRY, Tetrahedron letters, 39(23), 1998, pp. 4051-4054
Post-source decay (PSD) fragment analyses by MALDI-TOFMS were applied
to the characterization of two analogous structure isomers of xylogluc
an octasaccharides (XXLGol and XLXGol) from Tamarind seed. Almost all
possible fragment ions were detected by a multi-site cleavage at the g
lycosidic linkages. The same fragment ions were observed in their spec
tra, but the relative intensities of some of the ions differed greatly
. The detailed investigation of the relative intensities of the fragme
nt ions enabled definitely to distinguish the analogous structure isom
ers of the highly branched octasaccharides. (C) 1998 Elsevier Science
Ltd. All rights reserved.