Trifluoroacetic acid → (R)-5-(4-cyanobenzyl)-7-(3,5-dichlorophenyl)-5-methyl-6-oxo-6,7-dihydro-5H-imidazo[1,2-a]imidazole-3-carboxylic acid [4-(1-pyridin-2-yl-cyclopropylcarbamoyl)-piperidin-4-yl]-amide

Participants

Reaction Steps

To a solution of 4-{[(R)-5-(4-cyanobenzyl)-7-(3,5-dichlorophenyl)-5-methyl-6-oxo-6,7-dihydro-5H-imidazo[1,2-a]imidazole-3-carbonyl]-amino}-4-(1-pyridin-2-yl-cyclopropyl-carbamoyl)-piperidine-1-carboxylic acid tert-butyl ester (140 mg, 0.18 mmol) in CH2Cl2 (0.5 mL) was added TFA (0.5 mL) and stirred at room temperature for 1 h. The solvent was removed in vacuo to afford (R)-5-(4-cyanobenzyl)-7-(3,5-dichlorophenyl)-5-methyl-6-oxo-6,7-dihydro-5H-imidazo[1,2-a]imidazole-3-carboxylic acid [4-(1-pyridin-2-yl-cyclopropylcarbamoyl)-piperidin-4-yl]-amide as a white solid (120 mg), m/z 683.8 [M+1]+.

Provenance & Evidence