反应详情

To a solution of N-(2-(2-fluoro-5-methylphenyl)pyridin-4-yl)-2-(piperidin-4-yl)-2H-pyrazolo[4,3-b]pyridin-7-amine (49 mg, 0.122 mmol) in dichloromethane (3 mL) at 0° C. was added triethylamine (0.051 ml, 0.365 mmol) and mesyl chloride (10.41 μl, 0.134 mmol). The reaction was removed from the ice bath and briefly stirred at room temperature. The reaction mixture was concentrated and subjected to silica column chromatography eluted with 0-5% methanol in dichloromethane using a step gradient (over 24 minutes) to give N-(2-(2-fluoro-5-methylphenyl)pyridin-4-yl)-2-(1-(methylsulfonyl)piperidin-4-yl)-2H-pyrazolo[4,3-b]pyridin-7-amine (12 mg, 21%). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.31-2.49 (m, 7H) 2.83-2.95 (m, 3H) 2.95-3.10 (m, 2H) 4.03 (d, J=12.63 Hz, 2H) 4.42-4.66 (m, 1H) 7.03-7.24 (m, 4H) 7.34 (s, 1H) 7.75 (s, 1H) 7.83 (dd, J=7.58, 2.02 Hz, 1H) 8.18 (s, 1H) 8.44 (d, J=4.80 Hz, 1H) 8.65 (d, J=5.56 Hz, 1H). MS [M+H] found 481.4.

1. customThe reaction was removed from the ice bath
2. concentrationThe reaction mixture was concentrated
3. washeluted with 0-5% methanol in dichloromethane using a step gradient (over 24 minutes)