{(1S,2R)-1-Benzyl-2-hydroxy-3-[2-hydroxy-1-((1S,2R)-2-hydroxy-indan-1-ylcarbamoyl)-2-phenyl-ethylamino]-propyl}-carbamic acid tert-butyl ester
D,L-threo-phenylserine (2(R)-hydroxy-1(S)-indanyl)amide
((3R,4R)-2-Oxo-4-phenyl-1-p-tolyl-azetidin-3-yl)-carbamic acid tert-butyl ester
((1S,2R)-2-Hydroxy-2-phenyl-1-p-tolylcarbamoyl-ethyl)-carbamic acid tert-butyl ester