STEREOSELECTIVE SYNTHESIS OF l-SUGARS OF BIOLOGICAL IMPORTANCE STARTING FROM 4-O-BENZYL-2,3-O-ISOPROPYLIDENE-l-THREOSE AS A CHIRAL BUILDING BLOCK

Abstract

Biologically important L-sugars 2-deoxy-L-galactose, 3-amino-2,3-dideoxy-L-xylo-hexose, and L-diginose were successfully synthesized from the homoallyl alcohol, prepared by the stereoselective addition of allylic Sn(IV) reagent to 4-O-benzyl-2,3-O-isopropylidene-L-threose.