反应详情

To a solution of N-(4-{4-phenyl-5-[1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazol-3-yl]-1,3-thiazol-2-yl}pyridin-2-yl)prop-2-enamide (92 mg, 0.2 mmol) prepared in Example 4-B (iii) in tetrahydrofuran (2.0 mL) was added (2S)-2-(methoxymethyl)pyrrolidine (120 mg, 1.0 mmol), and the mixture was heated under reflux for 14 hr. The reaction solution was cooled to room temperature, and diluted with ethyl acetate (30 mL) and saturated aqueous sodium bicarbonate solution (30 mL). The aqueous layer was separated, extracted with ethyl acetate (40 mL), and the combined organic layer was dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the filtrate was concentrated. The obtained residue was dissolved in trifluoroacetic acid (4.0 mL), and the mixture was stirred at room temperature for 3 hr. Trifluoroacetic acid was evaporated under reduced pressure, and the residue was diluted with ethyl acetate (30 mL), and washed with saturated aqueous sodium bicarbonate solution (30 mL). The aqueous layer was separated and extracted with ethyl acetate (30 mL), and the combined organic layer was dried over anhydrous magnesium sulfate. The insoluble material was filtered off, the filtrate was concentrated under reduced pressure, and the obtained residue was purified by basic silica gel column chromatography (methanol/ethyl acetate=0/100→50/50) to give the title compound (60 mg, 62%) as a pale-yellow solid.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 14 hr
3. customThe aqueous layer was separated
4. extractionextracted with ethyl acetate (40 mL)
5. dry with materialthe combined organic layer was dried over anhydrous magnesium sulfate
6. filtrationThe insoluble material was filtered off
7. concentrationthe filtrate was concentrated
8. dissolutionThe obtained residue was dissolved in trifluoroacetic acid (4.0 mL)
9. customTrifluoroacetic acid was evaporated under reduced pressure
10. additionthe residue was diluted with ethyl acetate (30 mL)
11. washwashed with saturated aqueous sodium bicarbonate solution (30 mL)
12. customThe aqueous layer was separated
13. extractionextracted with ethyl acetate (30 mL)
14. dry with materialthe combined organic layer was dried over anhydrous magnesium sulfate
15. filtrationThe insoluble material was filtered off
16. concentrationthe filtrate was concentrated under reduced pressure
17. customthe obtained residue was purified by basic silica gel column chromatography (methanol/ethyl acetate=0/100→50/50)