benzyl (4-((2S,3R)-1-(4-fluorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-oxoazetidin-2-yl)phenyl) carbonate

(3R,4S)-1-(4-fluorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-(trityloxy)phenyl)azetidin-2-one

3-{2-[3-(fluorophenyl)-3-(trimethyl silyloxy)-propyl]-3-(4-fluoro phenyl amino)-3-(4-trimethyl silyloxy phenyl)-1-oxo-propyl}-4-(S)-phenyl oxazolidin-2-one

2-​Azetidinone, 4-​[4-​[[(1,​1-​dimethylethyl)​dimethylsilyl]​oxy]​phenyl]​-​1-​(4-​fluorophenyl)​-​3-​[(3S)​-​3-​(4-​fluorophenyl)​-​3-​hydroxypropyl]​-​, (3R,​4S)​-

(3R,4S)-1-(4-fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]azetidin-2-one