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 → [5-cyclohexyl-1-(3,3-dimethyl-2-oxo-butyl)-2-oxo-1,2-dihydro-3H-1,3,4-benzotriazepin-3-yl)-acetic acid ethyl 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 (3-amino-phenylsulfanyl)-acetic acid ethyl ester (S. Hagishita et al. Bioorg. Med. Chem. (1997), 5, 1433) was used instead of 3-amino-benzoic acid methyl ester in step e, followed by reaction of the product obtained, in place of [5-cyclohexyl-1-(3,3-dimethyl-2-oxo-butyl)-2-oxo-1,2-dihydro-3H-1,3,4-benzotriazepin-3-yl]-acetic acid ethyl ester (Example 1, step c), according to the method of Example 1, step d. 1H NMR (DMSO-d6) 12.60 (1H, br s), 9.81 (1H, s), 7.50 (3H, m), 7.27-7.21 (4H, m), 6.97 (1H, m), 4.78 (2H, m), 4.27 (1H, d), 3.96 (1H, d), 3.72 (2H, s), 2.86 (1H, m), 1.83-1.65 (6H, m), 1.29-1.17 (13H, m). The compound was further characterised as the N-methyl-D-glucamine salt. Found C, 54.50; H, 7.36; N, 8.44; C30H36N4O5S.C7H17NO5.3.0H2O requires C, 54.59; H, 7.30; N, 8.60%.

Provenance & Evidence