反应详情

温度

60 °C

t-butyl 6-(5-(aminomethyl)thiazol-2-yl)pyridazin-3-yl((1-(3-fluoropyridin-2-yl)cyclobutyl)methyl)carbamate (4.8 g, 10 mmol), glycolic acid (0.9 g, 12 mmol), HOBt (1.6 g, 12 mmol), EDC (2.3 g, 12 mmol), DMF (50 mL), and TEA (5.9 mL) were added to a 250 mL round bottom flask and the reaction was heated to 60° C. and stirred for 1 h. The reaction was poured into ethyl acetate (400 mL), washed with water (3×100 mL), and the combined organic layers were separated, dried over Na2SO4, filtered, concentrated, and purified by silica gel chromatography (EtOAC/hexanes) to afford 3.9 g of t-butyl (1-(3-fluoropyridin-2-yl)cyclobutyl)methyl(6-(5-((2-hydroxyacetamido)methyl)thiazol-2-yl)pyridazin-3-yl)carbamate as a white solid. This compound was dissolved in 30% TFA/CH2Cl2 (30 mL) and stirred for 1 h. The reaction was concentrated, dissolved in EtOAc (200 mL), washed with potassium carbonate (3×30 mL), concentrated, and then recrystallized with ethanol to give a white solid that was further purified with reverse phase chromatography to give 305 mg of N-((2-(6((1-(3-fluoropyridin-2-yl)cyclobutyl)methylamino)pyridazin-3-yl)thiazol-5-yl)methyl)-2-hydroxyacetamide as a white solid (M+H=429.1).

1. washwashed with water (3×100 mL)
2. customthe combined organic layers were separated
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated
6. custompurified by silica gel chromatography (EtOAC/hexanes)