{(R)-1-[(1S,2S,4R)-4-((S)-1-Benzylcarbamoyl-2-methyl-propylcarbamoyl)-2-hydroxy-1-isobutyl-pentylcarbamoyl]-2-methylsulfanyl-ethyl}-carbamic acid tert-butyl ester

((S)-1-{(R)-1-[(1S,2S,4R)-4-((S)-1-Benzylcarbamoyl-2-methyl-propylcarbamoyl)-2-hydroxy-1-isobutyl-pentylcarbamoyl]-2-methylsulfanyl-ethylcarbamoyl}-2-methyl-propyl)-carbamic acid tert-butyl ester

(2R,4S,5S)-5-[(fluorenylmethyloxycarbonyl)amino]-4-[(tert-butyldimethylsilyl)oxy]-2,7-dimethyloctanoic acid

(2R,4S,5S)-5-amino-4-((tert-butyldimethylsilyl)oxy)-N-((S)-1-(isopropylamino)-3-methyl-1-oxobutan-2-yl)-2,7-dimethyloctanamide

N1-((4S,5S,7R)-5-((tert-butyldimethylsilyl)oxy)-8-(((S)-1-(isopropylamino)-3-methyl-1-oxobutan-2-yl)amino)-2,7-dimethyl-8-oxooctan-4-yl)-5-(N-methylmethylsulfonamido)-N3-propylisophthalamide