D. Craig et al., TEMPLATE-DIRECTED INTRAMOLECULAR C-GLYCOSIDATION - STEREOSELECTIVE SYNTHESIS OF BICYCLIC KETOOXETANES FROM ANOMERIC SULFONES, Tetrahedron letters, 38(23), 1997, pp. 4153-4156
The Lewis acid-mediated cyclisations of sugar-derived anomeric sulfone
-enol ethers 5 and 6 to give respectively the bicyclic ketooxetanes 11
/12 and 16/17 are reported. (C) 1997 Elsevier Science Ltd.