Chloroform trifluoroacetic acid → N-[3'-(5-Carbamimidoyl-2-methylsulfanyl-thiophene-3-sulfonyl)-6-methyl-biphenyl-2-yl]-4-trifluoromethanesulfonylamino-butyramide trifluoroacetate

Participants

Reaction Steps

A solution of dichloromethane/trifluoroacetic acid (1/1) [2 mL] was added to (imino-{5-methylsulfanyl-4-[6′-methyl-2′-(4-trifluoromethanesulfonylaminobutyrylamino)-biphenyl-3-sulfonyl]-thiophen-2-yl}-methyl)-carbamic acid tert-butyl ester (0.020 g, 0.027 mmol) [example 212, step c] at room temperature and stirred for 1 hour. The reaction mixture was evaporated and purified via reverse-phase HPLC [acetonitrile/water (0.01% TFA)] to give the title compound (0.009 g, 54%) as a solid. 1H-NMR (MeOD): δ 8.29 (s, 1H), 8.03 (md, 1H, J=8.4 Hz), 7.87 (m, 1H), 7.68 (t, 1H, J=7.6 Hz), 7.53 (md, 1H, J=7.6 Hz), 7.34 (t, 1H, J=7.6 Hz), 7.28 (d, 1H, J=7.2 Hz), 7.19 (d, 1H, J=7.2 Hz), 2.98 (m, 2H), 2.72 (s, 3H), 2.06 (s, 3H), 2.05 (t, 2H, J=7.6 Hz), 1.48 (m, 2H). ESI-MS (m/z): Calcd. for C24H25F3N4O5S4: 634.07; found: 635.1.

Provenance & Evidence