6-bromo-3-({[(diethoxy-phosphoryl)-(2-trimethylsilanyl-ethoxycarbonyl)-methyl]-carbamoyl}-methyl)-2-[3-(5-formyl-3H-imidazol-4-yl)-3-methyl-but-1-enyl]-indole-1-carboxylic acid tert-butyl ester

2-(trimethylsilyl)ethyl (8Z,14E)-5,12-dibromo-14-chloro-10,10-dimethyl-1-oxo-1,2,10,11-tetrahydroazeto[1',2':1,2]imidazo[4',5':7,8]azecino[3,2-b]indole-15-carboxylate

6-bromo-2-{3-[5-(tert-butyl-dimethyl-silanyloxymethyl)-3H-imidazol-4-yl]-3-methyl-but-1-enyl}-3-methoxycarbonylmethyl-indole-1-carboxylic acid tert-butyl ester

6-bromo-2-[3-(5-formyl-3H-imidazol-4-yl)-3-methyl-but-1-enyl]-3-methoxycarbonylmethyl-indole-1-carboxylic acid tert-butyl ester