(1R,2S,3R,9aR)-3-(hydroxymethyl)-2,3,9,9a-tetrahydro-1H-pyrrolo[1,2-a]indole-1,2-diol

2-[3-(tert-Butoxycarbonyl-{4-[tert-butoxycarbonyl-(3-tert-butoxycarbonylamino-propyl)-amino]-butyl}-amino)-propylcarbamoyl]-2,3-dihydro-indole-1-carboxylic acid 9H-fluoren-9-ylmethyl ester

(3-tert-Butoxycarbonylamino-propyl)-[4-(tert-butoxycarbonyl-{3-[(1-butyryl-2,3-dihydro-1H-indole-2-carbonyl)-amino]-propyl}-amino)-butyl]-carbamic acid tert-butyl ester

(5-Bromo-2-methoxycarbonylmethyl-2,3-dihydro-indol-1-yl)-oxo-acetic acid ethyl ester

[5-Bromo-2-(1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-7-nitro-2,3-dihydro-indol-1-yl]-oxo-acetic acid ethyl ester