[NH2:1][C:2]1[CH:7]=[C:6]([O:8][C:9]2[C:14]([F:15])=[CH:13][C:12]([NH:16][C:17]([C:19]3[C:20](=[O:32])[N:21]([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)[N:22]([CH3:25])[C:23]=3[CH3:24])=[O:18])=[C:11]([Cl:33])[CH:10]=2)[CH:5]=[CH:4][N:3]=1.CCN(CC)CC.[C:41](OC(=O)C)(=[O:43])[CH3:42]>>[C:41]([NH:1][C:2]1[CH:7]=[C:6]([O:8][C:9]2[C:14]([F:15])=[CH:13][C:12]([NH:16][C:17]([C:19]3[C:20](=[O:32])[N:21]([C:26]4[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=4)[N:22]([CH3:25])[C:23]=3[CH3:24])=[O:18])=[C:11]([Cl:33])[CH:10]=2)[CH:5]=[CH:4][N:3]=1)(=[O:43])[CH3:42]To a solution of N-(4-((2-aminopyridin-4-yl)oxy)-2-chloro-5-fluorophenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide (200 mg, 0.43 mmol) in acetic anhydride (4 mL) was added Et3N (400 mg, 2.6 mmol). The mixture was stirred at 30° C. for 12 hours and concentrated in vacuo. The residue was purified by a silica gel column chromatography (DCM/CH3OH (v/v)=40/1) to give the title compound as a light yellow solid (110 mg, 50.5%).
Wird geladen…