Synthesis of some novel sulfonyl ester derivatives derived from D-mannitol

The preparation of sulfonate-derivatives of D-mannitol i.e. 1,2:3,4-di-O-isopropylidene- 3,4-di-O-p-toluenesulfonate-D-mannitol (3a), 1,2:3,4-di-O-isopropylidene-3,4-di-O-methanesulfonate- D-mannitol (3b), and 1, 2:3,4-di-O-isopropylidene-3,4-di-O-trifluoromethanesulfonate-D-mannitol (3c) is described. Full characterization and methodologies of these sulfonate-D-mannitol derivatives have been described as well.