反应详情

To a solution of 22 mg of rac-isobutyric acid (1R*,2R*,4R*)-2-(2-{[3-(1H-benzoimidazol-2-yl)-propyl]-methyl-amino}-ethyl)-5-phenyl-bicyclo[2.2.2]oct-5-en-2-yl ester dissolved in 0.6 mL EtOH (evacuated 3 times with N2) were added 10 mg of 10 wt % Pd/C. The reaction mixture was stirred under a H2 atmosphere (balloon) for 1 h, filtered over a pad of celite and the cake was washed with EtOH and concentrated in vacuo to provide crude isobutyric acid (1R*,2R*,4R*)-(5RS)-2-(2-{[3-(1H-benzoimidazol-2-yl)-propyl]-methyl-amino}-ethyl)-5-phenyl-bicyclo[2.2.2]oct-2-yl ester as mixture of 2 diastereoisomeric racemates. Purification by CC using EtOAc/MeOH 2/1 yielded 5 mg of racemate A and 6 mg of racemate B, both as colorless oils.

1. filtrationfiltered over a pad of celite
2. washthe cake was washed with EtOH
3. concentrationconcentrated in vacuo