8-Bromomethyl-6-methanesulfonyl-1-methyl-3,6,7,8-tetrahydro-pyrrolo[3,2-e]indol-4-ol

6-benzyloxy-3-hydroxymethyl-2,3-dihydro-1H-indole

6-tert-butyldimethylsilyoxy-1-tert-butyloxycarbonyl-3-hydroxymethylindole

Methanesulfonic acid (S)-5-benzyloxy-3-{5-[(1H-indole-2-carbonyl)-amino]-1H-indole-2-carbonyl}-8-methyl-1,2,3,6-tetrahydro-pyrrolo[3,2-e]indol-1-ylmethyl ester