Abstract
The structure and configuration of N-acetyl-(S)-alphacyclopropylalanyl-(S)-phenylalanin-dimethylamide (3'), Prepared by condensation of racemic N-acetyl-alpha-cyclopropylalanin (1) and (S)-phenylalanin-dimethylamide (2, Scheme 1) and separation of the diastereomers, have been determined by X-ray crystallography.