反应详情

Heat a mixture of 6-(8-chloropyrido[2,3-b]pyrazin-3-yl)-5-(trifluoromethyl)nicotinamide (70.6 mg, 0.2 mmol) and 2-aminoquinoxaline (85.8 mg, 0.6 mmol) in a screw cap vial at 140° C. for 20 hours under N2 atmosphere. Purify the reaction mixture by column chromatography using 1-2% MeOH/EtOAc as eluent to afford the title compound as a yellow solid. 1H NMR (400 MHz, CDCl3) δ 11.017 (s, 1H), 9.461 (s, 2H), 9.335 (d, 1H, J=1.1 Hz), 9.307 (s, 1H), 9.129 (d, 1H, J=1.3 Hz), 8.836 (s, 1H), 8.557(s, 1H), 7.975 (m, 3H), 7.789 (t, 1H), 7.647(t, 1H). MS=463.12 (M+H). The IC50 determined as described in Example 6 is less than 1 micromolar.

1. temperatureHeat
2. customcap vial at 140° C. for 20 hours under N2 atmosphere
3. customPurify the reaction mixture by column chromatography