反应详情

A 100-mL round-bottomed flask was charged with 2-(4-(4-((4-nitrophenyl)sulfonyl)-1-piperazinyl)phenyl)-1,1,1,3,3,3-hexafluoro-2-propanol (180 mg) and EtOH (20 mL). The reaction was placed under an atmosphere of argon. 10% Pd/C (37.3 mg, 0.351 mmol, Sigma-Aldrich, St. Louis, Mo.) was added and the reaction stirred under a balloon atmosphere of H2 (0.707 mg, 0.351 mmol) for 12 h. The reaction was carefully filtered through a pad of Celite®(diatomaceous earth), rinsing with EtOH. The crude material was concentrated onto silica gel and purified via column chromatography (40 g silica gel, 0 to 10% MeOH in CH2Cl2) to give 2-(4-(4-((4-aminophenyl)sulfonyl)-1-piperazinyl)phenyl)-1,1,1,3,3,3-hexafluoro-2-propanol (90 mg). 1H NMR (400 MHz, CD3OD) δ=7.54 (d, J=8.8 Hz, 2H), 7.48 (d, J=8.6 Hz, 2H), 6.98 (d, J=9.0 Hz, 2H), 6.73 (d, J=8.6 Hz, 2H), 3.31-3.26 (m, 4H), 3.11-3.03 (m, 4H). m/z (ESI, +ve ion) 484.1 (M+H)+. GK-GKRP IC50 (Binding)=0.582 μM; GK-GKRP EC50 (LC MS/MS-2)=0.828 μM.

1. filtrationThe reaction was carefully filtered through a pad of Celite®(diatomaceous earth),
2. washrinsing with EtOH
3. concentrationThe crude material was concentrated onto silica gel
4. custompurified via column chromatography (40 g silica gel, 0 to 10% MeOH in CH2Cl2)