反应详情

温度

50 °C

4N HCl-dioxane (7 ml) was added to a solution of 1-tert-butylcarbonylmethyl-2-oxo-3-tert-butoxycarbonylamino-5-cyclohexyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine (517 mg) in ethanol (20 ml), the mixture was stirred at 50° C. for one hour. The reaction mixture was concentrated under reduced pressure, neutralized with saturated aqueous sodium bicarbonate, and extracted with methylene chloride. The organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and purified by silica gel column chromatography(chloroform:methanol=20:1), to thereby obtain 400 mg of the title compound (Yield: 98%).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. extractionextracted with methylene chloride
3. washThe organic layer was washed with saturated brine
4. dry with materialdried over anhydrous sodium sulfate
5. custompurified by silica gel column chromatography(chloroform:methanol=20:1)