5-(1, 2, 3, 4-Tetra-O-acetyl-α-d-xylopyranos-5S-C-yl)-1, 3, 4-oxathiazol-2-one (8) has been prepared from glucuronamide in two steps and 73% overall yield by conversion to the tetra- O-acetyl derivative 7 followed by reaction with chlorocarbonylsulfenyl chloride. 5-(2, 3, 4-Tri- O-acetyl-β-d-xylopyranosyl)-1, 3, 4-oxathiazol-2-one (12) was synthesised from d-xylose by a four-step sequence involving conversion to the xylopyranosylnitromethane derivative 9, ...
