反应详情

To a solution of N-{5-[(2-amino[1,3]thiazolo[5,4-b]pyridin-5-yl)oxy]-2-methylphenyl}-3-(1-cyanocyclopropyl)benzamide (47 mg, 0.124 mmol) in pyridine (2.0 mL) was added cyclopropanecarbonyl chloride (25 μL, 0.273 mmol), and the mixture was stirred at room temperature for 2 hr. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in methanol (1.0 mL)/water (1.0 mL). 1N Aqueous sodium hydroxide solution (1.0 mL) was added, and the mixture was stirred at room temperature for 30 min. The reaction mixture was concentrated under reduced pressure, and the residue was diluted with ethyl acetate (100 mL), washed with water (50 mL) and saturated brine (50 mL), and dried over anhydrous sodium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate=70/30→0/100), and the obtained solution was concentrated under reduced pressure. The residue was triturated with ethyl acetate/hexane to give the title compound (40 mg, 64%) as a colorless powder.

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. dissolutionthe residue was dissolved in methanol (1.0 mL)/water (1.0 mL)
3. addition1N Aqueous sodium hydroxide solution (1.0 mL) was added
4. stirringthe mixture was stirred at room temperature for 30 min
5. concentrationThe reaction mixture was concentrated under reduced pressure
6. additionthe residue was diluted with ethyl acetate (100 mL)
7. washwashed with water (50 mL) and saturated brine (50 mL)
8. dry with materialdried over anhydrous sodium sulfate
9. filtrationThe insoluble material was filtered off
10. concentrationthe filtrate was concentrated under reduced pressure
11. customThe obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate=70/30→0/100)
12. concentrationthe obtained solution was concentrated under reduced pressure
13. customThe residue was triturated with ethyl acetate/hexane