Methyl 4-O-(4-α-d-glucopyranosyloxy-4-methoxybutyl)-α-d-glucopyranoside, a modified oligosaccharide for studying the interactions of carbohydrates with multi-site proteins

Add time:08/18/2019    Source:sciencedirect.com

Methyl 4-O-(4-α-d-glucopyranosyloxy-4-methoxybutyl)-α-d-glucopyranoside (9) was synthesised by transacetalation from methyl 2,3,6-tri-O-acetyl-4-O-(4,4-di-methoxybutyl)-α-d-glucopyranoside and trimethylsilyl 2,3,4,6-tetra-O-acetyl-α-d-glucopyranoside followed by removal of the blocking groups. Compound 9, which is methyl α-maltotrioside modified by replacing the middle d-glucosyl residue with an acyclic spacer, competitively inhibits the hydrolysis of p-nitrophenyl α-maltotrioside by porcine alpha-amylase.

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