Syntheses of specifically deoxygenated methyl alpha-isomaltotriosides.

Specifically deoxygenated methyl alpha-isomaltotriosides were synthesized by the silver perchlorate-mediated condensation of a protected alpha-isomaltosyl chloride with suitably blocked derivatives of methyl alpha-D-glucopyranoside deoxygenated respectively at positions 2, 3, and 4, followed by deprotection.