Highly Stereoselective Synthesis of β-Glycosides of 3-Deoxy-2-Hexulosonates

Article abstract of DOI:10.1016/S0957-4166(00)86071-1

ε-Hydroxy (Z)-enol ethers 6 and 12 were readily prepared from D-glucono-1,5-lactone by ring openning, 2-O-alkylation with triflate 3, and Z-specific β-elimination.Cyclization of 6 and 12 induced by PhSeBF4 or by PhSeOTf provided exclusivaly β-connected di