(2008/12/07)
methyl 3-{(2S,3R)-2-[4-(4-bromobenzyloxy)phenyl]-1-(4-fluorophenyl)-4-oxoazetidin-3-yl}propionate
methyl 3-{(2S,3R)-1-(4-fluorophenyl)-2-[4-(4-methoxybenzyloxy)phenyl]-4-oxoazetidin-3-yl}propionate
methyl 3-{(2S,3R)-2-[4-(tert-butyldimethylsilyloxy)phenyl]-1-(4-fluorophenyl)-4-oxoazetidin-3-yl}propionate
methyl 3-{(3R,4S)-1-(4-fluorophenyl)-2-oxo-4-[4-(tetrahydro-2H-pyran-2-yloxy)phenyl]azetidin-3-yl}propanoate
methyl 3-{(3R,4S)-1-(4-fluorophenyl)-2-oxo-4-[4-(trityloxy)phenyl]azetidin-3-yl}propionate