(2-{[1-(5-Nitro-1H-indol-2-yl)-methanoyl]-amino}-ethyl)-propyl-carbamic acid dimethyl-ethyl ester → 1H-indole-2,5-dicarboxylic acid bis-{[2-(2-propylamino-ethylcarbamoyl)-1H-indol-5-yl]-amide}

Participants

Reaction Steps

Compound 82 (131.2 mg, 0.336 mmol) was reduced to 83 by hydrogenation according to general procedure A in Example 10. Similar procedure as described for the preparation of 76 from condensation of compound 83 with 1H-indole-2,5-dicarboxylic acid bis-(pentafluorophenyl-amide) 74 (45 mg, 0.084 mmol) followed deprotection of Boc group and purification by HPLC gave 80 (39.4 mg, 63%). ESI MS: 690.31 (M+H+), 345.66 (M/2+H+).

Provenance & Evidence