Glycosylations de Diols-4,6 en Serie Gluco et Manno, Utilises Comme Accepteurs, Avec des Donneurs N-Allyloxycarbonyles de la Glucosamine

Abstract

Glycosylations were realized with N-allyloxycarbonyl derivatives of D-glucosamine on 4, 6-diols of the gluco and manno series. Depending on the donor used (either a glucosyl bromide or a β-acetate) and on the stoichiometry of reactants, a good regioselectivity could be observed towards the primary hydroxyl group. When the OH-6 is glycosylated or esterified the above donors are effective glycosylating agents towards the C-4 hydroxyl group.