(R)-N-tert-Butyl-2-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3-(4-nitro-phenyl)-propionamide

{[1-(4-Nitro-phenyl)-meth-(E)-ylidene]-amino}-acetic acid

(2RS,3RS)-3-acetoxy-2-acetylamino-3-phenyl-propionic acid methyl ester

(2RS,3RS)-2-amino-3-methoxy-3-(4-nitro-phenyl)-propionic acid

(2R,3S)-N-tert-Butyl-2-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3-hydroxy-3-(4-nitro-phenyl)-propionamide