Hydrochloric Acid → HCID 67098022, compound

Participants

Reaction Steps

To a solution of 4′-[2-[(tert-butoxycarbonyl)[(2R)-2-phenyl-2-(tetrahydro-2H-pyran-2-yloxy)ethyl]amino]ethyl]-3-(isopropylthio)-4-biphenylcarboxylic acid (500 mg) in N,N-dimethylformamide (5 ml) was added N,N′-carbonyldiimidazole (157 mg) and stirred at room temperature for 30 minutes. To the mixture were added 3-pyridinesulfonamide (153 mg) and 1,8-diazabicyclo[5.4.0]-7-undecene (145 μl) and stirred at room temperature for 3 hours. The reaction mixture was poured into 0.1N hydrochloric acid and ethyl acetate and the organic layer was separated. The organic layer was washed with water and brine, dried over magnesium sulfate and concentrated in vacuo. The residue was purified with silica gel column chromatography to give tert-butyl [2-[3′-(isopropylthio)-4′-[[(3-pyridylsulfonyl)amino]carbonyl]-4-biphenylyl]-ethyl][(2R)-2-phenyl-2-(tetrahydro-2H-pyran-2-yloxy)ethyl]carbamate (613 mg).

Provenance & Evidence