Hydrochloric Acid → HCID 57947598, compound

Participants

Reaction Steps

To a solution of (S)-methyl 4-(3-(2-chloro-3-fluorobenzyl)-1-methylureido)-5-(6-fluoroisoquinolin-3-ylcarbamoyloxy)pentanoate (400 mg, 0.748 mmol, 1.0 equiv.) in 1,4-dioxane (1 mL) was added LiOH (2 N, 1.5 mL, 2.99 mmol, 4.0 equiv.). The reaction mixture was stirred at RT for 1 h., then was acidified to pH 1-3 with HCl (1 N). The mixture was diluted in EtOAc. The organic layer was washed by H2O and brine, and concentrated. The resulting residue was purified on RP-HPLC using a mixture of acetonitrile and H2O to give (S)-4-(3-(2-chloro-3-fluorobenzyl)-1-methylureido)-5-(6-fluoroisoquinolin-3-ylcarbamoyloxy)pentanoic acid (340 mg, 87%). LRMS (M+H+) m/z 521.2.

Provenance & Evidence