The cyclic sulfamidate of the allosamine derivative 11 is efficiently prepared by reaction with 1,1′-sulfuryl diimidazole; the regioselective opening of this compound by sulfur nucleophiles furnishes 3-thioglucosamine derivatives, useful intermediates in synthesis of thiooligosaccharides.
B. Aguilera and A. Fernández-Mayoralas, Chem. Commun., 1996, 127 DOI: 10.1039/CC9960000127
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