Trifluoroacetic acid → HCID 57947553, compound

Participants

Reaction Steps

To a solution of (S)-tert-butyl 4-(4-(3-(2-chloro-3-fluorobenzyl)-1-methylureido)-5-(isoquinolin-3-ylcarbamoyloxy)pentanoyl)piperazine-1-carboxylate (22 g, 32.8 mmol) in DCM (200 mL) was added TFA (100 mL). The reaction mixture was stirred at RT for 3 h and concentrated. The residue was purified on silica gel column using a mixture of MeOH and DCM. The fractions were concentrated, dissolved in water (200 mL), neutralized to pH 8-9 with 1N NaOH, and extracted with EtOAc (300 mL×3). The organic layer was dried over Na2SO4, filtered, and concentrated to give (S)-2-(3-(2-chloro-3-fluorobenzyl)-1-methylureido)-5-oxo-5-(piperazin-1-yl)pentyl isoquinolin-3-ylcarbamate (14 g, 75%). LRMS (M+H) m/z 571.1.

Provenance & Evidence