12-tert-butyl 8-methyl (8S,11R,12S)-11-isobutyl-2,10-dioxo-1-oxa-3,9-diazacyclopentadecane-8,12-dicarboxylate

(2S,3R)-2-(3-Bromo-propyl)-3-[(S)-3-(4-hydroxy-phenyl)-1-methoxycarbonyl-propylcarbamoyl]-5-methyl-hexanoic acid tert-butyl ester

(2S,3R)-2-{3-[((S)-5-Amino-5-methoxycarbonyl-pentyl)-methyl-carbamoyloxy]-propyl}-3-isobutyl-succinic acid 1-tert-butyl ester

(2S,3R)-2-(3-Bromo-propyl)-3-[(S)-4-(4-hydroxy-phenyl)-1-methoxycarbonyl-butylcarbamoyl]-5-methyl-hexanoic acid tert-butyl ester

methyl (6S,7R,10S)-6-{[(benzyloxy)amino]carbonyl}-7-isobutyl-8-oxo-2-oxa-9-azabicyclo[10.2.2]hexadeca-1(14),12,15-triene-10-carboxylate