反应详情

To a solution of 1-(4-((3-aminopyridin-4-yl)methoxy)naphthalen-1-yl)-3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)urea (Intermediate C) (50 mg, 0.10 mmol) and DIPEA (33.5 μl, 0.19 mmol) in anhydrous DCM (1.0 mL) and anhydrous DMF (0.2 mL) was added 2-(2-methoxyethoxy)acetyl chloride (15 μl, 0.11 mmol). The reaction mixture was stirred for 12 hr at RT. LC-MS indicated 50% conversion to the desired product. 2-(2-methoxyethoxy)acetyl chloride (15 μl, 0.11 mmol) was added and the reaction mixture stirred at RT. After 6 hr, LC-MS indicated the reaction had gone to completion. MeOH (2.0 mL) and AcOH (5 drops) were added and the reaction mixture was subjected to SCX capture and release, eluting with 1% NH3 in MeOH. The solvent was removed in vacuo and the crude material purified by column chromatography (4 g, 0-10% MeOH in EtOAc, gradient elution) to afford N-(4-((4-(3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)ureido)naphthalen-1-yloxy)methyl)pyridin-3-yl)-2-(2-methoxyethoxy)acetamide (Example 17) as a white solid (27 mg, 43%): m/z 637 (M+H)+ (ES+). 1H NMR (400 MHz, DMSO-d6) δ: 1.27 (9H, s), 2.39 (3H, s), 3.18 (3H, s), 3.36 (2H, m), 3.61 (2H, m), 4.14 (2H, s), 5.33 (2H, s), 6.35 (1H, s), 6.97 (1H, d), 7.35 (2H, d), 7.43 (2H, d), 7.67-7.55 (4H, m), 7.92 (1H, d), 8.27 (1H, d), 8.46 (1H, d), 8.58 (1H, s), 8.74 (1H, s), 8.80 (1H, s), 9.65 (1H, s).