反应详情

To a solution of the amino compound 133 (400 mg, 1.08 mmol) in DMF (20 mL), 3-(2-fluorophenylamino)-3-oxopropanoic acid (29) (427 mg, 2.17 mmol), EDC (352 mg, 2.60 mmol) was added HOBT (499 mg, 2.60 mmol). The reaction mixture was allowed to stir for 1 hr. The solution was extracted with EtOAc and the extract was washed with water, aqueous ammonium chloride and brine then dried over anhydrous magnesium sulfate, filtered and evaporated under reduced pressure. The residue was purified by flash chromatography (eluents DCM-MeOH, 98:2, 95:5) to afford title compound 130 (215 mg, 36% yield) as a yellow solid. 1H NMR (DMSO-d6). δ (ppm): 10.56 (s, 1H), 10.06 (s, 1H), 8.43 (d, J=5.6 Hz, 1H), 8.10-7.96 (m, 1H), 7.94 (d, J=1.2 Hz, 1H), 7.87 (dd, J=1.6 and 12.8 Hz, 1H), 7.77 (d, J=1.2 Hz, 1H), 7.68 (s, 1H), 7.49 (t, J=8.8 Hz, 1H), 7.42 (dd, J=2.0 and 8.8 Hz, 1H), 7.32-7.25 (m, 1H), 7.22-7.14 (m, 2H), 6.58 (d, J=5.6 Hz, 1H), 3.98 (t, J=7.2 Hz, 2H), 3.62 (s, 2H), 1.78 (sex, J=7.2 Hz, 2H), 0.87 (t, J=7.2 Hz, 3H). MS (m/z): 548.1 (M+H).

1. extractionThe solution was extracted with EtOAc
2. washthe extract was washed with water, aqueous ammonium chloride and brine
3. dry with materialthen dried over anhydrous magnesium sulfate
4. filtrationfiltered
5. customevaporated under reduced pressure
6. customThe residue was purified by flash chromatography (eluents DCM-MeOH, 98:2, 95:5)