1,1'-Carbonyldiimidazole → HCID 59868542, compound

Participants

Reaction Steps

To a solution of carbonyldiimidazole (204 mg, 1.25 mmol) in DCM (20 mL) was added tert-butyl N-[(1S)-4-amino-1-{[(1R)-1-[(quinolin-3-yl)carbamoyl]-2-[4-(trifluoromethyl)phenyl]ethyl]carbamoyl}butyl]carbamate CXV (687 mg, 1.20 mmol) and stirred at r.t. for 1 h. To this mixture was added tert-butyl N-{2-[(2-{[(tert-butoxy)carbonyl]amino}ethyl)amino]ethyl}carbamate X (436 mg, 1.44 mmol) and the reaction was stirred overnight at r.t. The mixture was diluted DCM and washed with 1 M HCl, brine, dried over MgSO4 and purified on a silica gel column (100:1→70:1→50:1 CHCl3/MeOH) to give product tert-butyl N-[2-({[(4S)-4-{[(tert-butoxy)carbonyl]amino}-4-{[(1R)-1-[(quinolin-3-yl)carbamoyl]-2-[4-(trifluoromethyl)phenyl]ethyl]carbamoyl}butyl]carbamoyl} (2-{[(tert-butoxy)carbonyl]amino}ethyl)amino)ethyl]carbamate CXVI (500 mg, 0.55 mmol, 44% yield). ESIMS found for C44H61F3N8O9 m/z 904 (M+H).

Provenance & Evidence