An efficient route to per-O-acetylated hexofuranoses

Anomeric mixtures of per-O-acetylated d-galacto-, d-gluco- and d-manno-furanose derivatives were prepared via the corresponding n-octyl hexofuranosides under mild acetolysis conditions. The crystal X-ray data of 1,2,3,5,6-penta-O-acetyl-α-d-mannofuranose corroborate the proposed structures.