(R)-2-Amino-N-[5-(4-chloro-phenyl)-3,3-dimethyl-1,1-dioxo-2,3-dihydro-1H-1λ6-isothiazol-4-ylmethyl]-N-ethyl-3-(4-trifluoromethyl-benzyloxy)-propionamide

N-tert-butoxycarbonylamino-O-(4-trifluoromethylbenzyl)-D-serine

[5-(4-chlorophenyl)-3,3-dimethyl-1,1-dioxo-2,3-dihydroisothiazol-4-ylmethyl]ethylamine

[(R)-1-{[5-(4-Chloro-phenyl)-3,3-dimethyl-1,1-dioxo-2,3-dihydro-1H-1λ6-isothiazol-4-ylmethyl]-ethyl-carbamoyl}-2-(4-trifluoromethyl-benzyloxy)-ethyl]-carbamic acid tert-butyl ester