Journal
CARBOHYDRATE RESEARCH
Volume 338, Issue 19, Pages 1937-1949Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0008-6215(03)00255-6
Keywords
glucosidase II; glycoprotein processing; n-pentenyl glycosides; fluorescence labels
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The fluorescence-labelled disaccharides Glcalpha(1-->3)GlcalphaOR and Glcalpha(l-->3)ManalphaOR, both substrates for the glycoprotein-processing enzyme glucosidase II, were synthesised via the use of a n-pentenyl-derived linker at the anomeric position. This allowed incorporation of a pyrenebutyric acid label, via a sequence of oxidative hydroboration, mesylation, azide displacement, reduction with concomitant global deprotection, and peptide coupling. Selective activation of a fully armed thioglycoside in the presence of n-pentenyl glycosides was readily achieved by the use of methyl triflate as promoter. (C) 2003 Elsevier Ltd. All rights reserved.
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