反应详情

methyl 2-((R)-(3-chlorophenyl)((R)-1-((S)-1-cyclohexyl-3-(N-methyl-N-(tert-butoxycarbonyl)amino)propan-2-ylcarbamothioyl)piperidin-3-yl)methoxy)ethylcarbamate (640 mg, 0.1 mmol) was dissolved in a solution of 20% (V/V) TFA/CH2Cl2 (5 mL). The reaction mixture was stirred at room temperature for 1 h, a solution of saturated sodium bicarbonate was added dropwise to adjust the pH to 7-8. The resulting mixture was extracted with CH2Cl2 (3×15 mL), washed with brine, dried over Na2SO4, concentrated in vacuo. The residue was purified by preparative HPLC to afford methyl 2-((R)-(3-chlorophenyl)((R)-1-((S)-1-cyclohexyl-3-(methylamino)propan-2-ylcarbamothioyl)piperidin-3-yl)methoxy)ethylcarbamate (10 mg, 19%).

1. extractionThe resulting mixture was extracted with CH2Cl2 (3×15 mL)
2. washwashed with brine
3. dry with materialdried over Na2SO4
4. concentrationconcentrated in vacuo
5. customThe residue was purified by preparative HPLC