3-methyl-5-[1-methyl-2(RSS)-phenylsulfinyl-(1S)-ethyl]-2-oxo-(4R,5R)-1,3-oxazolan-4-yl-methylacetate

3-methyl-5-[1-methyl-2-(4-methylphenylsulfonyloxy)-(1R)-ethyl]-2-oxo-(4R,5R)-1,3-oxazolan-4-ylmethylacetate

Benzoic acid (2S,3R,4R)-1-benzyl-2-(tert-butyl-diphenyl-silanyloxymethyl)-4-methyl-pyrrolidin-3-yl ester

Benzoic acid (1R,2S)-1-[(R)-1-bromo-2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-2-methyl-3-phenylsulfanyl-3-(2,2,2-trifluoro-acetoxy)-propyl ester