Novel glycosylidene-spiro-heterocycles from unprecedented solvent incorporation in Koenigs–Knorr-like reactions of C-(1-bromo-1-deoxy-β-D-glycopyranosyl)formamides
Abstract
The title compounds give glycopyranosylidene-spiro-dioxolanes 3 and 4 in acetone and C-(1-methylsulfanylmethoxy-α-D-glycopyranosyl)formamides 5 in DMSO in the presence of Ag2CO3 and AgF, respectively.