反应详情

A solution of Intermediate 6c (65.0 mg, 0.19 mmol), Intermediate 5c (50.0 mg, 0.155 mmol), and DIPEA (0.127 mL, 0.8 mmol) in DMF (1 mL) was heated at 110° C. for 75 min and 50° C. for 64 h. After cooling, the mixture was concentrated to dryness and the residue purified by FCC, eluting with 0-10% MeOH in DCM, to give the impure product (63 mg). Further purification by HPLC (Method 6) gave the title compound as a white solid (45 mg, 56%). LCMS (Method 5): Rt 4.06 min, m/z 522.1 [MH+]. 1H NMR (400 MHz, d6-DMSO): 1.36-1.41 (6H, m), 1.76-1.85 (1H, m), 1.98-2.08 (1H, m), 2.13-2.28 (2H, m), 2.33 (3H, s), 3.59 (1H, quintet, J 6.8), 4.96-5.03 (1H, m), 5.62 (1H, t, J 4.6), 6.74 (1H, d, J 8.5), 7.24 (1H, dd, J 9.9, 2.1), 7.26-7.46 (6H, m), 7.62-7.66 (2H, m), 7.68 (1H, s), 7.70 (1H, dd, J 9.9, 0.8), 8.24 (1H, br d), 8.26 (1H, s), 8.31 (1H, s).

1. temperatureAfter cooling
2. concentrationthe mixture was concentrated to dryness
3. customthe residue purified by FCC
4. washeluting with 0-10% MeOH in DCM