反应详情

The product from Example 133C (1.5 mL of solution in CH2Cl2) was added to a solution of the product from Example 112C (86 mg, 0.49 mmol) in pyridine (1.0 mL) in a 4 mL vial. The reaction mixture was stirred at room temperature for 2 h. Methanol (0.5 mL) was added, and the solution was stirred for 30 minutes and then concentrated under vacuum. The residue was purified by flash chromatography (silica gel, eluted with hexanes-EtOAc, 70:30-0:100) to provide the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 1.45 (d, J=7.1 Hz, 6H) 1.57-1.69 (m, 2H) 1.70-1.87 (m, 6H) 3.24 (hept, J=7.1 Hz, 1H) 4.10-4.13 (m, 1H) 4.11-4.12 (m, 2H) 6.72 (dd, J=6.8, 4.1 Hz, 1H) 8.39 (dd, J=4.1, 1.7 Hz, 1H) 8.58 (dd, J=6.8, 1.7 Hz, 1H) 8.60 (s, 1H); MS (ESI) m/z 303 (M+H)+; Anal. Calculated for C16H22N4O2: C, 63.71; H, 7.44; N, 18.20. Found: C, 63.56; H, 7.33; N, 18.53.

1. stirringthe solution was stirred for 30 minutes
2. concentrationconcentrated under vacuum
3. customThe residue was purified by flash chromatography (silica gel, eluted with hexanes-EtOAc, 70:30-0:100)