Exploitation of Furanoid 5-Azido-3-C-Branched-Chain Sugars Towards Highly Functionalized Nitrogen-Containing Carbohydrate Derivatives
作者:Nuno M. Xavier、Yves Queneau、Amélia P. Rauter
DOI:10.1002/ejoc.201001119
日期:2011.2
The ability of easily accessed 1,2-0-protected 5-azido-3-C-(ethoxycarbonyl)methylenefuranoses to serve as precursors for the generation of imino sugar derivatives containing an α,β-unsaturated lactone or ketone functionality has been investigated. A key aspect was the propensity of the corresponding deprotected δ-amino α,β-unsaturated esters to undergo 5-aminofuranose/iminopyranose isomerization. Acid