反应详情

A solution of Intermediate 33a (190 mg, 0.454 mmol), Intermediate 37a (132 mg, 0.378 mmol) and DIPEA (132 μL, 0.756 mmol) in anhydrous DMF (3 mL) was stirred at 100° C. for 3 h. After cooling, the mixture was partitioned between EtOAc (50 mL) and water (50 mL), and then extracted into EtOAc (3×50 mL). The combined organics were washed with brine (50 mL), dried (MgSO4) and evaporated in vacuo. The residue was purified by FCC, using 0-10% MeOH in DCM, to give the title compound as give an off-white solid after freeze-drying (143 mg, 61%). LCMS (Method 5): Rt 3.23, m/z 621 [MH+]. 1H NMR (400 MHz, d6-DMSO): 1.22 (9H, s), 1.95-1.97 (3H, m), 2.07 (3H, s), 2.20-2.23 (3H, m), 2.52-2.53 (1H, m), 3.10 (1H, m), 3.92 (1H, t, J 8.1), 4.51 (2H, d, J 5.6), 5.25-5.27 (2H, m), 5.83 (1H, d, J 5.8), 6.25 (1H, s), 6.99 (1H, d, J 7.9), 7.18 (1H, dd, J 9.9, 2.2), 7.24-7.32 (2H, m), 7.35-7.41 (6H, m), 7.67 (1H, d, J 9.9), 8.10 (1H, s), 8.20 (1H, s).

1. temperatureAfter cooling
2. customthe mixture was partitioned between EtOAc (50 mL) and water (50 mL)
3. extractionextracted into EtOAc (3×50 mL)
4. washThe combined organics were washed with brine (50 mL)
5. dry with materialdried (MgSO4)
6. customevaporated in vacuo
7. customThe residue was purified by FCC