反应详情

To a solution of Intermediate 176b (0.188 mmol) and N-(2-methoxyethyl)methyl amine (32.7 mg, 0.38 mmol) in DCM (3 mL), sodium triacetoxyborohydride (59.8 mg, 0.28 mmol) was added. The mixture was stirred at RT for 1 h. Water was added and the mixture extracted with DCM. The combined organics were passed through a phase separator and concentrated to dryness. The resulting residue was purified by RP-HPLC (C18, 18 mL/min, 20-85% MeCN in H2O+0.1% HCO2H) and the relevant fractions combined and concentrated to dryness. The title product was isolated as an off white solid (23.9 mg). LCMS (Method 5): Rt 3.68 min, m/z 720.5 [MH+]. 1H NMR (400 MHz, d6-DMSO): 0.91 (3H, d, J=6.3 Hz), 1.27 (9H, s), 1.50 (2H, m), 1.66 (2H, m), 1.74-1.96 (4H, m), 1.98-2.16 (2H, m), 2.17 (3H, s), 2.54 (2H, t, J=6.0 Hz, obscured by solvent), 2.90 (1H, m), 3.16 (1H, m, obscured by solvent), 3.23 (3H, s, obscured by solvent), 3.45 (2H, t, J=6.0 Hz, obscured by solvent), 3.54 (2H, s, obscured by solvent), 4.82 (1H, m), 5.51 (1H, t, J=4.3 Hz), 6.33 (1H, s), 7.09 (1H, d, J=8.8 Hz), 7.19 (1H, dd, J=9.7, 2.2 Hz), 7.24-7.50 (8H, m), 7.64 (1H, d, J=10.0 Hz), 7.69 (1H, d, J=1.5 Hz), 8.09 (1H, s), 8.17 (1H, s).

1. extractionthe mixture extracted with DCM
2. concentrationconcentrated to dryness
3. customThe resulting residue was purified by RP-HPLC (C18, 18 mL/min, 20-85% MeCN in H2O+0.1% HCO2H)
4. concentrationconcentrated to dryness