2-phenyl-4(S)-<2-(N,N-dimethylamino)-oxoethyl>-2-oxazolone

2-phenyl-4(S)-<3-(N,N-dimethylamino)-3-oxo-2(S)-propyl>-2-oxazoline

2-phenyl-4(S)-<3-(N,N-dimethylamino)-3-oxo-2(R)-propyl>-2-oxazoline

(R)-N,N-Dimethyl-3-phenyl-2-((S)-2-phenyl-4,5-dihydro-oxazol-4-yl)-propionamide

2(R)-methyl-3(S)-(benzoylamino)-γ-butyrolactone