反应详情

3-(5-(tert-butoxy)-5-oxopentyl)-2-(4-fluorophenyl)-1-oxo-1,2-dihydroisoquinoline-6-carboxylic acid (50 mg, 0.114 mmol)), HOBt.H2O (34.8, 0.228 mmol), EDCI (43.6 mg, 0.228 mmol), Hunig's base (44.1 mg, 0.341 mmol) and (R)-1-(4-fluorophenyl)-3-methylpiperazine (22.1 mg, 0.114 mmol, prepared from the coupling of (R)-tert-butyl 2-methylpiperazine-1-carboxylate and 1-fluoro-4-iodobenzene using CuI followed with deprotection with TFA) were mixed in dichloromethane (1 mL). The mixture was kept stirring at room temperature for 16 hours before it was diluted with dichloromethane (5 mL), washed with aqueous sodium hydrogen carbonate (saturated, 1×3 mL) and hydrochloric acid (0.5 M, 2 mL), dried (MgSO4) and filtered. The solvent was evaporated under reduced pressure. The residue was purified by column chromatography on silica gel, eluting with EtOAc/isohexane=1:1 to give (R)-tert-butyl 5-(2-(4-fluorophenyl)-6-(4-(4-fluorophenyl)-2-methylpiperazine-1-carbonyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)pentanoate (58 mg, 0.094 mmol) as a yellow foam.

1. washwashed with aqueous sodium hydrogen carbonate (saturated, 1×3 mL) and hydrochloric acid (0.5 M, 2 mL)
2. dry with materialdried (MgSO4)
3. filtrationfiltered
4. customThe solvent was evaporated under reduced pressure
5. customThe residue was purified by column chromatography on silica gel
6. washeluting with EtOAc/isohexane=1:1