Optically Active Oxazolidinones as Michael Donors: Synthesis of Novel Enantiopure α,β-Diamino Acids and 2-Substituted 1-Aminocyclopropane Carboxylic Acids1 - Es-Sayed, Mazen; Gratkowski, Corinna; Krass, Norbert; Meyers, Albert I; de Meijere, Armin (Synlett, 1992)