反应详情

To a solution of [2-(5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}-1H-indol-2-yl)-4,5-dihydro-1,3-thiazol-5-yl]acetic acid (150 mg) in N,N-dimethylformamide (5 mL) were added 1-hydroxybenzotriazole monohydrate (80 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (100 mg), and 2M dimethylamine tetrahydrofuran solution (0.35 mL), and the mixture was stirred at room temperature for 15 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine, dried over magnesium sulfate, filtered and concentrated under reduced pressure. The obtained crude product was subjected to basic silica gel column chromatography (methanol:ethyl acetate:hexane=0:0:100 to 10:90:0, volume ratio) and crystallized from acetonitrile to give the title compound (112 mg, yield 70%) as white crystals.

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe obtained crude product
7. customcrystallized from acetonitrile