A concise preparation of the common pentasaccharide core of the N-linked glycoproteins is described. The reducing end glycal is functionalized at the level of chitobiose, which is then beta-mannosylated using Crich's direct coupling protocol. Deprotection of the branching mannose residue, and di-alpha-mannosylation complete the synthesis. (C) 2003 Elsevier Science Ltd. All rights reserved.
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Univ London Univ Coll, Christopher Ingold Labs, Dept Chem, London WC1H 0AJ, EnglandUniv London Univ Coll, Christopher Ingold Labs, Dept Chem, London WC1H 0AJ, England
Premdjee, B.
Macmilan, D.
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Univ London Univ Coll, Christopher Ingold Labs, Dept Chem, London WC1H 0AJ, EnglandUniv London Univ Coll, Christopher Ingold Labs, Dept Chem, London WC1H 0AJ, England