Synthesis and MALDI-TOF MS Analysis of Protected Oligosaccharide Components ofN-Glycoproteins

AbstractEssential components of N-glycoproteins were synthesized in octyl glycoside form starting from 3-O-allyl-D-glucose derivative. The β-mannosidic linkage was formed by the oxidation reduction method. MALDI-TOF mass spectrometry and its post-source decay (PSD) mode were used for identification and structural elucidation of protected synthetic oligosaccharides related to N-glycoproteins. Most fragments, identified in the PSD spectra, were products of the cleavage of glycosidic bonds.Keywords: Oligosaccharide synthesisβ-MannosideN-GlycoproteinMALDI-TOF MSPost-source decay (PSD)