α-Amino Acids as Chiral Educts for Stereoselective Syntheses of Pyrrolidine and Pyrrolizidine Systems.

Abstract Homochiral functionalized pyrrolidine and pyrrolizidine systems have been achieved by stereoselective intramolecular 1,3-dipolar cycloaddition of homochiral nitrones, starting from homochiral amino acids, and by subsequent reduction of the obtained cycloadducts.