N-(2-fluoro-3-trifluoromethyl-benzyl)-3-[2-oxo-3-(2-oxo-4-phenyl-oxazolidin-3-yl)-4-styryl-azetidin-1-yl]-succinamic acid tert-butyl ester

(S)-3-[(2R,3S)-1-(Bis-trimethylsilanyl-methyl)-2-methyl-4-oxo-azetidin-3-yl]-4-phenyl-oxazolidin-2-one

(2S,3S)-1-Benzyl-2-methyl-4-oxo-3-((S)-2-oxo-4-phenyl-oxazolidin-3-yl)-azetidine-2-carboxylic acid methyl ester

3-[2-oxo-3-(2-oxo-4-phenyl-oxazolidin-3-yl)-4-styryl-azetidin-1-yl]-N-(1-phenyl-ethyl)-succinamic acid tert-butyl ester

(S)-3-((3S,4R)-1-Benzyl-2-oxo-4-phenyl-azetidin-3-yl)-4-phenyl-oxazolidin-2-one