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

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

(3S,3'S)-3-[N-tert-butoxycarbonyl-3'-hydroxy-3'-(4-methoxyphenyl)propylamino]-3-(4-methoxyphenyl)-1-(2,2,2-trichloroethoxycarbonyloxy)propane

(3S,3'S)-3-(3'-acetoxy-N-tert-butoxycarbonyl-3'-(4-methoxyphenyl)propylamino)-3-(4-methoxyphenyl)-1-(2,2,2-trichloroethoxycarbonyloxy)propane