3-{2-[5-Cyclohexyl-1-(3,3-dimethyl-2-oxo-butyl)-2-oxo-1,2-dihydro-3H-1,3,4-benzotriazepin-3-yl]-acetylamino}-benzoic acid methyl ester → (3-{2-[5-cyclohexyl-1-(3,3-dimethyl-2-oxo-butyl)-2-oxo-1,2-dihydro-3H-1,3,4-benzotriazepin-3-yl]-acetylamino}-phenyl)-methyl-carbamic acid tert-butyl ester

Participants

Reaction Steps

The title compound was obtained by the method used in the preparation of 3-{2-[5-cyclohexyl-1-(3,3-dimethyl-2-oxo-butyl)-2-oxo-1,2-dihydro-3H-1,3,4-benzotriazepin-3-yl]-acetylamino}-benzoic acid methyl ester (Example 1) except that 6-amino-benzimidazole-1-carboxylic acid tert-butyl ester (prepared in two steps from 5(6)-nitro-benzimidazole) was used in place of 3-amino-benzoic acid methyl ester in step e, followed by reaction of the product obtained, in place of (3-{2-[5-cyclohexyl-1-(3,3-dimethyl-2-oxo-butyl)-2-oxo-1,2-dihydro-3H-1,3,4-benzotriazepin-3-yl]-acetylamino}-phenyl)-methyl-carbamic acid tert-butyl ester (Example 3, step d), according to the method of Example 3, step e. 1H NMR (CDCl3) 8.44. (1H, s), 8.24 (1H, br s), 7.98 (1H, s), 7.60-7.47 (3H, m), 7.32-7.27 (1H, m), 7.04 (1H, d, 8.1), 6.84 (1H, br s), 4.77 (1H, d, 18), 4.67 (1H, d, 18), 4.40 (1H, d, 16.5), 4.25 (1H, d, 16.5), 2.84-2.76 (1H, m), 2.05-1.65 (6H, m), 1.45-1.24 (13H, m). Found C, 65.40; H, 6.89; N, 15.79%; C29H34N6O3.H2O requires C, 65.39; H, 6.81; N, 15.78%.

Provenance & Evidence