tert-butyl (2S,3'S)-2-(3'-acetoxy-N-tert-butoxycarbonyl-3'-tert-butoxycarbonylpropylamino)-4-hydroxybutanoate

methyl (3S,3'S)-3-[3'-tert-butyldimethylsiloxy-3'-(4-methoxyphenyl)propylamino]-3-(4-methoxyphenyl)propionate

(S)-2-acetoxy-4-((tert-butoxycarbonyl)((S)-1-carboxy-3-(((2,2,2-trichloroethoxy)carbonyl)oxy)propyl)amino)butanoic acid

[(S)-3-(tert-Butyl-dimethyl-silanyloxy)-3-(4-methoxy-phenyl)-propyl]-[(S)-3-hydroxy-1-(4-methoxy-phenyl)-propyl]-carbamic acid tert-butyl ester

methyl (3S,3'S)-3--3-(4-methoxyphenyl)propionate