4-Methylmorpholine → 2-[N-[4-(1-tert-Butoxycarbonylpiperidin-4-yloxy)phenyl]-N-(4-methoxycarbonyl-benzoyl)aminomethyl]-5-cyano-1-(4-benzyloxyphenylcarbamoylmethyl)-benzimidazole

Participants

Reaction Steps

2-[N-[4-(1-tert-Butoxycarbonylpiperidin-4-yloxy)phenyl]-N-(4-methoxycarbonylbenzoyl)aminomethyl]-5-cyanobenzimidazole-1-acetic acid (632 mg), 1-hydroxybenzotriazole hydrate (128 mg), 4-benzyloxyaniline hydrochloride (223 mg), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (182 mg) and N-methylmorpholine (0.104 ml) were treated in the same manner as in Example 17, Step 10. The solvent was evaporated and the obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=3:7-2:8) to give the title compound (605 mg).

Provenance & Evidence