An Extremely Mild and General Method for the Construction of 1,2-trans-.BETA.-Glycosidic Linkages via Glycopyranosyl Diethyl Phosphites with Participating Groups at C-2.
A highly efficient 1, 2-trans-β-glycosidation reaction has been developed by using glycopyranosyl diethyl phosphites bearing participating groups such as benzoate, phthalimido, or trichloroethyl carbamate groups at C-2 as glycosyl donors and trimethylsilyl trifluoromethanesulfonate (TMSOTf) as a promoter.