反应详情

To a slurry of 5-cyano-1H-imidazole-2-carboxylic acid (6-cyclohex-1-enyl-1′,2′,3′,4′,5′,6′-hexahydro-[2,4′]bipyridinyl-5-yl)-amide trifluoroacetic acid salt (57 mg 0.11 mmol) in 5 mL of DCM was added DIEA (50.4 μL, 0.290 mmol) followed by 30.5 mg (0.150 mmol) of methanesulfonic acid 2-methanesulfonyl-ethyl ester (as prepared in Example 40, step(a)). The reaction was allowed to stir overnight, diluted with 20 mL of DCM, washed with satd aq NaHCO3 (1×20 mL) and dried over Na2SO4. Purification by preparative TLC (silica gel, 40% EtOAc-hexanes) afforded 22.3 mg (40%) of the title compound as a white solid. 1H-NMR (DMSO; 400 MHz): δ 10.02 (s, 1H), 8.24 (s, 1H), 8.11 (d, 1H, J=8.4 Hz), 7.18 (d, 1H, J=8.4 Hz), 5.96 (s, 1H), 3.04 (s, 3H), 3.02-2.99 (m, 3H), 2.73 (t, 2H, J=2.7 Hz), 2.39-2.37 (m, 2H), 2.11-2.05 (m, 4H), 1.85-1.64 (m, 10H). Mass Spectrum (ESI, m/z): Calcd. for C24H31N6O3S, 483.2 (M+H), found 483.3.

1. washwashed with satd aq NaHCO3 (1×20 mL)
2. dry with materialdried over Na2SO4
3. customPurification by preparative TLC (silica gel, 40% EtOAc-hexanes)