反应详情

WSC (0.39 g) was added to a solution of [3-{1-[(benzoyloxy)carbonyl]piperidin-4-yl}-2-oxotetrahydropyrimidin-1(2H)-yl]acetic acid (0.70 g) obtained in Example 36a), a solution of methylamine in THF (1.85 mL) and HOBt (0.31 g) in THF/dichloromethane (1/1, 30 mL) and the mixture was stirred at room temperature overnight. The solvent were distilled off under reduced pressure, and the residue was diluted with ethyl acetate. The mixture was washed with an aqueous saturated sodium bicarbonate solution and saturated saline solution, dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified with basic silica gel column chromatography (ethyl acetate) to obtain the title compound (0.70 g, 97%) as a white powder.

1. distillationThe solvent were distilled off under reduced pressure
2. additionthe residue was diluted with ethyl acetate
3. washThe mixture was washed with an aqueous saturated sodium bicarbonate solution and saturated saline solution
4. dry with materialdried over anhydrous magnesium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified with basic silica gel column chromatography (ethyl acetate)