反应详情

温度

60 °C

(3R,5S)-1-(tert-Butoxycarbonyl)-5-[{[6-fluoro-1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-3-carboxylic acid (1.05 g), HOBt (361 mg) and WSC.HCl (549 mg) were dissolved in DMF (50 ml), morpholine (332 μl) and diisopropylethylamine (780 μl) were added, and the mixture was stirred at 60° C. for 4 hr. The reaction mixture was cooled to room temperature, concentrated under reduced pressure, and the residue was diluted with aqueous sodium bicarbonate. The mixture was extracted with ethyl acetate, and the extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with ethyl acetate was concentrated under reduced pressure to give the object product (1.14 g).

1. temperatureThe reaction mixture was cooled to room temperature
2. concentrationconcentrated under reduced pressure
3. additionthe residue was diluted with aqueous sodium bicarbonate
4. extractionThe mixture was extracted with ethyl acetate
5. washthe extract was washed with saturated brine
6. dry with materialdried over anhydrous sodium sulfate
7. customThe solvent was evaporated under reduced pressure
8. washa fraction eluted with ethyl acetate
9. concentrationwas concentrated under reduced pressure