(3R)-4,4-dimethyl-2-oxo-1-phenylpyrrolidin-3-yl (2R)-3-cyano-2-(4-isobutylphenyl)propionate

(3R,3'R)-4,4-dimethyl-2-oxo-1-phenylpyrrolidin-3-yl 4-nitro-3-(4-chlorophenyl)butanoate

4,4-dimethyl-1-phenylpyrrolidine-2,3-dione

rac-3-hydroxy-4,4-dimethyl-1-phenyl-2-pyrrolidinone

(S)-3-hydroxy-4,4-dimethyl-1-phenyl-2-pyrrolidinone