Rapid Access to Enantiomerically Pure 3,6-Anhydro-2-deoxy-7-phenylglyconolactones. Synthesis of Diastereoisomers of (+)-Goniofufurone

3,4-Anhydro-2-deoxy-7-phenylglyconolactones were synthesized in six steps from diacetone-Dglucose.Construction of the cis-fused bicyclic systems of the corresponding 3,4-anhydro-2-deoxy-7-phenylglycolactones was achieved by a stereoselective substitution reaction at the anomeric position of the1,2-O-isopropylidene group of the corresponding 1,2-O-isopropylidenefuranose derivatives. An other important reaction was a sequential hydrolysis-oxidation-addition of Grignard reagent reaction. This reaction permits to place the phenyl group at C-7 position in “one pot” from diacetone-D-glucose.