Hydrochloric Acid → HCID 67096903, compound

Participants

Reaction Steps

To a solution of 6-[4-[2-[(tert-butoxycarbonyl)[(2R)-2-(3-chlorophenyl)-2-(tetrahydro-2H-pyran-2-yloxy)ethyl]-amino]ethyl]phenyl]-1-isopropyl-1H-indole-3-carboxylic acid (131 mg) in N,N-dimethylformamide (2 mL) was added 1,1′-carbonyldiimidazole (35 mg) at room temperature under nitrogen, and the mixture was stirred at the same temperature for 2.5 hours. To this one were added methanesulfonamide (46 mg) and 1,8-diazabicyclo[5.4.0]-7-undecene (72 mg) at room temperature, and the mixture was stirred at 60° C. for 10 hours. The resulting mixture was poured into 0.1N hydrochloric acid and the aqueous layer was extracted with ethyl acetate. The organic layer was washed successively with 0.1N hydrochloric acid three times and brine, dried over anhydrous magnesium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography on silica gel (chloroform/methanol=200/1 to 100/1) to give tert-butyl [(2R)-2-(3-chlorophenyl)-2-(tetrahydro-2H-pyran-2-yloxy)ethyl][2-[4-[1-isopropyl-3-[[(methylsulfonyl)amino]-carbonyl]-1H-indol-6-yl]phenyl]ethyl]carbamate (134 mg).

Provenance & Evidence