反应详情

A mixture of 6-bromo-9H-purine (Aldrich, 0.0152 g, 0.07656 mmol), 2-(1-aminopropyl)-6-methyl-3-phenyl-4H-pyrido[1,2-a]pyrimidin-4-one (0.019 g, 0.064 mmol), and N,N-diisopropylethylamine (0.0134 mL, 0.07666 mmol) in ethanol (0.5 mL) was refluxed under nitrogen overnight. The mixture was cooled and purified on RP-HPLC at pH 10 (XBridge C18 column, eluting with a gradient of acetonitrile/water containing 0.15% NH4OH) to provide the product as the free base. LCMS calculated for C23H22N7O (M+H)+: m/z=412.2. Found: 412.4. 1H NMR (DMSO-d6, 300 MHz) δ 8.07 (2H, m), 7.60 (1H, dd, J=9.0 and 6.9 Hz), 7.39-7.32 (7H, m), 7.00 (1H, m), 6.85 (1H, br d, J=6.9 Hz), 5.13 (1H, m), 2.81 (3H, s), 1.72 (2H, m), 0.65 (3H, t, J=7.2 Hz) ppm.

1. temperaturewas refluxed under nitrogen overnight
2. temperatureThe mixture was cooled
3. custompurified on RP-HPLC at pH 10 (XBridge C18 column
4. washeluting with a gradient of acetonitrile/water containing 0.15% NH4OH)
5. customto provide the product as the free base