反应详情

温度

23 °C

The title compound was prepared as follows. A mixture of methyl 2-(4-(4-(4-chloro-5-oxo-7,8-dihydropyrimido[5,4-f][1,4]oxazepin-6(5H)-yl)-3-fluorophenyl)cyclohexyl)acetate (20 mg, 0.045 mmol), from Preparation 4, in 0.5M ammonia in dioxane was stirred at 50° C., in a tightly capped flask, for 3 hours. The reaction mixture was concentrated to give a white solid, which was carried on to the next step without further purification. LiOH (4.5 mg, 0.18 mmol) was added to a solution of the white solid in THF/methanol/water (2.4 mL, 3:2:1) and the resulting solution was stirred at 23° C. for 16 hours. 1M HCl solution was added to reaction solution to adjust the pH about 3. 20% i-propanol in DCM (30 mL) was added to extract reaction mixture. The organic layer was separated and dried over MgSO4 and concentrated to give a solid. Purification was done by chromatography (4 g, silica gel column) with methanol/DCM from 2-6% to give a white solid 12 mg as the title compound.

1. customfrom Preparation 4
2. concentrationThe reaction mixture was concentrated
3. customto give a white solid, which
4. customwas carried on to the next step without further purification
5. extractionto extract
6. customreaction mixture
7. customThe organic layer was separated
8. dry with materialdried over MgSO4
9. concentrationconcentrated
10. customto give a solid
11. customPurification