Stereospecific 1,2-ethyl(phenyl)thio group migration in sugars: Stereocontrolled synthesis of precursors to α- and β-2-deoxyglycosides

Article abstract of DOI:10.1016/0040-4039(92)88142-R

lodonium ion (NIS/TfOH, _cat.) assisted glycosylation of a sugar acceptor with properly protected enthyl(phenyl)-2-O-phenoxythiocarbonyl 1-thio-β-D-gluco- or 1-thio-α-D-mannopyranoside donors gives the respective 1,2-trans linked 2′-ethyl(phenyl