SYNTHESIS OF ENANTIOMERICALLY PURE, ALL SYN, TETRA AND PENTASUBSTITUTED CYCLOPENTANES BY THE DESYMMETRISATION OF ENDO-NORBORN-5-ENE-2,3-DICARBOXYLIC ANHYDRIDES

Ozonolysis of diastereomerically pure norbornene derivatives incorpora ting methyl (S)-prolinate provides a route for the synthesis of enanti omerically pure cyclopentanes bearing four or five substituents all or ientated syn to one another.