(-)-(R)-S-2-[N-(2-Hydroxy-1,1-dimethylethyl)-aminocarbonylthio]-2-phenyl-3-pentanone

2,2,4,4-tetramethyl-1,3-oxazolidine-3-carboxylic acid (S)-2-(N,N-dibenzylamino)-5-(N,N-diisopropylcarbamoyloxy)pent-1-yl ester

(-)-(R)-S-2-[N-(2-Hydroxy-1,1-dimethylethyl)-aminocarbonylthio]-4-methyl-2-phenyl-3-pentanone

(-)-(R)-2-Phenyl-2-(2,2,4,4-tetramethyl-1,3-oxazolidine-3-thio)-3-pentanone

(-)-(S)-S-1-Methyl-1-phenylpropyl 2,2,4,4-tetramethyl-1,3-oxazolidine-3-thiocarboxylate