反应详情

温度

50 °C

To a solution of Intermediate 167b (0.22 mmol) in THF (2.5 mL) was added piperidine (424 μL, 4.3 mmol) and the reaction stirred at 50° C. for 24 h. The crude reaction mixture was cooled and partitioned between EtOAc and water. The aqueous phase was extracted with EtOAc (×3) and the combined organic layers were washed with brine, dried (MgSO4) and concentrated in vacuo. The resultant residue was purified by FCC on silica, using a gradient of 0-10% (2M NH3 in MeOH) in DCM, followed by MDAP (Method 7) purification, to give the title compound (44 mg, 25%). LCMS (Method 5): Rt 3.69 min, m/z 716 [MH+]. 1H NMR (400 MHz, d6-DMSO): 0.86 (3H, d, J=6.2 Hz), 1.23 (9H, s), 1.28-1.33 (2H, m), 1.38-1.48 (6H, m), 1.58-1.66 (2H, m), 1.70-1.92 (4H, m), 1.95-2.12 (2H, m), 2.26-2.34 (4H, m), 2.86 (1H, ddd, J=12.7, 9.0, 3.9 Hz), 3.11 (1H, dt, J=11.9, 4.1 Hz), 3.23-3.29 (1H, m), 3.44 (2H, s), 4.77 (1H, td, J=8.4, 5.7 Hz), 5.46 (1H, t, J=4.2 Hz), 6.28 (1H, s), 6.99 (1H, d, J=8.6 Hz), 7.15 (1H, dd, J=9.8, 2.1 Hz), 7.20-7.25 (2H, m), 7.25-7.29 (2H, m), 7.29-7.36 (3H, m), 7.39 (1H, t, J=7.8 Hz), 7.59 (1H, d, J=10.0 Hz), 7.64 (1H, d, J=1.8 Hz), 8.06 (1H, s), 8.12 (1.8H, s).

1. customThe crude reaction mixture
2. temperaturewas cooled
3. custompartitioned between EtOAc and water
4. extractionThe aqueous phase was extracted with EtOAc (×3)
5. washthe combined organic layers were washed with brine
6. dry with materialdried (MgSO4)
7. concentrationconcentrated in vacuo
8. customThe resultant residue was purified by FCC on silica
9. customfollowed by MDAP (Method 7) purification