反应详情

N-(2,6-Dichlorobenzoyl)-4-(2-sulfamoylphenyl)-L-phenylalanine methyl ester (100 mg) was dissolved in anhydrous pyridine (5 mL). To this solution was added benzoyl chloride (50 μL) and the mixture was stirred for 12 h at room temperature under N2. EtOAc and satd. NaHCO3 were added to the mixture and the EtOAc phase was washed with 1 N HCl, dried (MgSO4) and evaporated. The residue was purified by flash column chromatography (silica gel; eluent: EtOAc/hexanes 1:2) to give N-(2,6-dichlorobenzoyl)-4-[2-(N-benzoylsulfamoyl)phenyl]-L-phenylalanine methyl ester.

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4. customThe residue was purified by flash column chromatography (silica gel; eluent: EtOAc/hexanes 1:2)