5-((Tert-butoxycarbonyl)amino)-2-(2,6-difluorophenyl)thiazole-4-carboxylic acid → HCID 71539603, compound

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Reaction Steps

Following the procedure for Example 110, (R)-5-(2-ethyl-4-methylpiperazin-1-yl)-1-methyl-1H-pyrazol-4-amine and 5-(tert-butoxycarbonylamino)-2-(2,6-difluorophenyl)thiazole-4-carboxylic acid from Example 25 gave 176 as a white solid (47 mg, 28% over two steps). 1H NMR (400 MHz, CDCl3) δ 8.58 (s, 1H), 7.87 (s, 1H), 7.37-7.25 (m, 1H), 7.01 (t, J=8.8 Hz, 2H), 6.17 (s, 2H), 3.76 (s, 3H), 3.33 (t, J=11.3 Hz, 1H), 3.22 (t, J=9.2 Hz, 1H), 2.97 (t, J=12.7 Hz, 2H), 2.79 (d, J=11.0 Hz, 1H), 2.41-2.22 (m, 4H), 1.96 (t, J=10.2 Hz, 1H), 1.41-1.33 (m, 1H), 1.28-1.13 (m, 1H), 0.80 (t, J=7.5 Hz, 3H). LCMS (ES+) m/z 462 (M+1).

Provenance & Evidence