反应详情

Methyl cis(±)-2-amino-5-(4-{[(benzyloxy)carbonyl]amino}-3-methoxypiperidin-1-yl)benzoate obtained in Example (185b) (300 mg) was dissolved in methylene chloride (25 ml). Acetyl chloride (0.1 ml) and triethylamine (0.2 ml) were added, and the mixture was stirred at room temperature for one hour. Methanol was added to the reaction solution, followed by concentration under reduced pressure. Then, the residue was diluted with ethyl acetate, washed with water, and then concentrated under reduced pressure to obtain the title compound. The resulting compound was used for the next reaction without purification.

1. concentrationfollowed by concentration under reduced pressure
2. additionThen, the residue was diluted with ethyl acetate
3. washwashed with water
4. concentrationconcentrated under reduced pressure