Two routes are presented for the conversion of opticallyactive α-amino acidamides into the title compounds. One route(route A) features the formation of the Schiff's base 6 which is subsequently oxidized to the corresponding oxaziridines 7. Route B is characterized by the formation of an imidazolin 11 which is hydroxylated to compound 12. Alcoholysis of 7 and 12 in the presence of hydroxylamine hydrochloride