tert-butyl ((3R,4S,7S,10S,11R)-1⁶-(benzyloxy)-10-(((benzyloxy)carbonyl)(methyl)amino)-3-ethyl-11-hydroxy-7-isopropyl-3-methyl-6,9-dioxo-2-oxa-5,8-diaza-1(1,3)-benzenacycloundecaphane-4-carbonyl)glycinate

{[(2S,3S)-3-ethynyl-3-methyl-1-(2-nitrobenzenesulfonyl)-aziridine-2-carbonyl]amino}acetic acid tert-butyl ester

(2S,3R)-3-(4-benzyloxy-3-hydroxyphenyl)-2-(tert-butoxycarbonylmethylamino)-3-hydroxypropionic acid benzyl ester

(2S,3R)-3-(3-{(R)-1-[(S)-amino-(tert-butoxycarbonylmethylcarbamoyl)methyl]-1-methylprop-2-ynyloxy}-4-benzyloxyphenyl)-2-(tert-butoxycarbonylmethylamino)-3-hydroxypropionic acid benzyl ester

(2S,3R)-3-(4-benzyloxy-3-{(R)-1-[(S)-(tert-butoxycarbonylmethylcarbamoyl)-(2-nitrobenzenesulfonylamino)methyl]-1-methylprop-2-ynyloxy}phenyl)-2-(tert-butoxycarbonylmethylamino)-3-hydroxypropionic acid benzyl ester