(9H-fluoren-9-yl)methyl (2R,2'S,4R,9a'S)-4-(2-aminobenzamido)-2'-isobutyl-3',5-dioxo-2',3',4,5-tetrahydro-3H-spiro[furan-2,9'-imidazo[1,2-a]indole]-1'(9a'H)-carboxylate

FMOC-Sec(Ph)-OH

(R)-3-(2,3-Dihydro-1H-indol-3-yl)-2-(2,2,2-trichloro-ethoxycarbonylamino)-propionic acid methyl ester

Nin-L-benzyloxycarbonylleucyl-Na-2,2,2-trichloroethoxycarbonyl-D-tryptophan methyl ester

(2S,9R)-9-Hydroxy-2-isobutyl-9a-methoxy-9-[(R)-2-methoxycarbonyl-2-(2,2,2-trichloro-ethoxycarbonylamino)-ethyl]-3-oxo-2,3,9,9a-tetrahydro-imidazo[1,2-a]indole-1-carboxylic acid benzyl ester