反应详情

温度

60 °C

The product obtained using Compound 18 (300 mg, 0.90 mmol), N-(tert-butoxycarbonyl)-L-serine (155 mg, 0.76 mmol), 1-hydroxybenzotriazole monohydrate (133 mg, 0.99 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (204 mg, 1.06 mmol) and N-methylmorpholine (0.17 mL, 1.52 mmol) in a similar manner to Example 5, was dissolved in methanol (2.00 mL), and the solution was added with 4 moL/L hydrogen chloride-methanol solution (1.50 mL), followed by heating under reflux at 60° C. for 30 minutes. The reaction mixture was concentrated under reduced pressure, and the residue was crystallized from acetone to obtain Compound 123 (290 mg, 78%).

1. customThe product obtained
2. temperatureby heating
3. concentrationThe reaction mixture was concentrated under reduced pressure
4. customthe residue was crystallized from acetone