反应详情

To a solution of acid 225 (70 mg, 0.151 mmol), DIPEA (0.105 mL, 0.603 mmol) and pyrrolidine (0.025 mL, 0.301 mmol) in DMF (4 mL) was added HATU reagent (143 mg, 0.377 mmol). The mixture was stirred for 16 h at RT then partitioned between ethyl acetate and water. The organic phase was collected, washed with water, 1M NaOH, and brine, dried over anhydrous MgSO4, filtered and concentrated. The residue was purified by Biotage (MeOH/DCM, 0-15%, SNAP 10 g cartridge), then using chromatotron (eluent MeOH/DCM, 5-10%) followed by trituration with a mixture Et2O/MeOH/Acetone to give title compound 226 (15 mg, 0.029 mmol, 19% yield) 1H NMR (400 MHz, DMSO-d6) δ (ppm): OH from carboxylic acid is missing, 9.66 (bs, 1H), 8.98 (dd, J=1.9, 0.9 Hz, 114), 8.51 (d, J=5.5 Hz, 1H), 8.31 (s, 1H), 8.22 (dd, J=8.1, 1.9 Hz, 1H), 8.17 (dd, J=8.1, 0.9 Hz, 1H), 7.77 (dd, J=13.7, 2.5 Hz, 1H), 7.45 (bs, 1H), 7.37 (t, J=9.1 Hz, 1H), 7.26 (dd, J=8.9, 1.5 Hz, 1H), 6.62 (d, J=5.3, 0.8 Hz, 1H), 2.60-2.52 (m, 1H), 0.69-0.56 (m, 2H), 0.50-0.37 (m, 2H). MS (m/z): 465.3 (M+H)

1. customthen partitioned between ethyl acetate and water
2. customThe organic phase was collected
3. washwashed with water, 1M NaOH, and brine
4. dry with materialdried over anhydrous MgSO4
5. filtrationfiltered
6. concentrationconcentrated
7. customThe residue was purified by Biotage (MeOH/DCM, 0-15%, SNAP 10 g cartridge)