D. Urban et al., STEREOCONTROLLED SYNTHESIS OF ALPHA-C-GALACTOSAMINE DERIVATIVES PROMOTED BY SAMARIUM DIIODIDE - AN EXAMPLE OF CHELATION CONTROLLED C-GLYCOSYLATION, Chemical communications, (16), 1996, pp. 1883-1884
Direct coupling of the pyridylsulfone of N-acetylgalactosamine with al
dehydes or ketones is promoted by samarium diiodide unexpectedly givin
g the corresponding alpha-C-glycosides.