反应详情

To a solution of (S)-2-[4-(3-aminopropoxy)-2,6-dichlorobenzoylamino]-3-[4-(2,6-dichlorobenzoylamino)phenyl]propionic acid methyl ester (5.8 g, 7.98 mmol,) in THF (200 mL) was added a solution of lithium hydroxide (2.4 g, 100 mmol) in water (30 mL) at room temperature. The mixture was stirred for 15 h at room temperature at which time TLC analysis of the mixture indicated the absence of starting material. Then, the solvent was removed by rotary evaporation and the residue was purified by an HPLC method to obtain 3.7 g (65% yield) of (S)-2-[4-(3-aminopropoxy)-2,6-dichlorobenzoylamino]-3-[4-(2,6-dichlorobenzoylamino)phenyl]propionic acid as a white solid. ES(+)-HRMS m/e calcd. for C26H23Cl4N3O5 (M+H)+ 598.0465, obsd. 598.0465.

1. customThen, the solvent was removed by rotary evaporation
2. customthe residue was purified by an HPLC method