反应详情

A solution of HCl in methanol was prepared by adding acetyl chloride (10 Ml) to methanol at approx. 0° C. The solution was allowed to stir for 10 min and then it was added to 3-[[3,5-bis[(tetrahydro-2H-pyran-2-yl)oxy]benzoyl]amino]-N-[2,6-dichloro-4-[[[(3-hydroxyphenyl)methyl]amino]carbonyl]benzoyl]-L-alanine, methyl ester (1.60 g, 2.1 mmol). The resulting solution was allowed to stir overnight at room temperature and then the volatiles were evaporated to give N-[2,6-dichloro-4-[[[(3-hydroxyphenyl)methyl]amino]carbonyl]benzoyl]-3-(3,5-dihydroxybenzoylamino)-L-alanine, methyl ester (1.26 g, quantitative yield) as an off-white solid.

1. stirringto stir overnight at room temperature
2. customthe volatiles were evaporated