-2,5-ANHYDRO-1,6-DI-O-(P-TOLYLSULFONYL)-D-MANNITOL

The title compound, s(4-methylphenylsulfonyloxymethyl)oxolane-3,4-diyl diacetate, C24H28O11S2, lies on a crystallographic twofold axis. It a dopts a perfect twist T-3(4) conformation in the solid state. The puck ering parameters of the tetrahydrofuran ring are q = 0.32 (8) Angstrom and phi = 92.3 (5)degrees. The acetyl groups are planar, with the non -H atoms deviating less than 0.002 (3) Angstrom from their mean plane. They have an (S)-cis conformation with the C-O and C=O bonds eclipsed , and each acetyl group is orientated with the C=O group syndiaxial to the C-H bond at the ring C atom to which the group is attached.