Synthesis of C-glycosides from glycals or vinylogous lactones and trimethylsilyl ketene acetals

Article abstract of DOI:10.1016/0040-4020(96)00275-X

2,3-Unsaturated C-glycosides were obtained in good to excellent yields from the trimethylsilyltriflate catalyzed reaction between carbohydrate derived cyclic enolethers ('glycals') and trimethylsilyl ketene acetals; under similar conditions vinylogous lac