反应详情

温度

25 °C

To a solution of (S)-3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxylpropyl)benzamide (400 mg, 1.23 mmol) in MeOH (8 mL) was added AcOH (0.05 mL) and dihydro-2H-pyran-4(3H)-one (123 mg, 1.23 mmol). The mixture was stirred at 25° C. for 2 h. NaBH3CN (387 mg, 6.15 mmol) was added and the resulting mixture was stirred at 25° C. for 2 h. The reaction solution was concentrated, and the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (160 mg, Yield 31.8%). 1H NMR (CD3OD, 400 MHz): δ 7.94-7.76 (m, 2H), 7.63-7.56 (m, 1H), 7.56-7.49 (m, 1H), 7.32-7.24 (m, 3H), 7.21-7.15 (m, 1H), 4.71-4.55 (m, 1H), 4.52-4.28 (m, 2H), 4.05-3.95 (m, 2H), 3.92-3.70 (m, 2H), 3.62-3.46 (m, 3H), 3.46-3.33 (m, 4H), 3.28-3.02 (m, 2H), 1.99-1.85 (m, 2H), 1.82-1.66 (m, 2H). LCMS (m/z): 410.2 (M+1).

1. stirringthe resulting mixture was stirred at 25° C. for 2 h
2. concentrationThe reaction solution was concentrated
3. washthe residue was washed with water
4. extractionextracted with EA
5. concentrationThe organic layer was concentrated
6. customthe residue was purified by prep-HPLC