反应详情

t-Butyl 2-{3-(4-acetylphenoxy)-5-[(1S)-2-methoxy-1-methylethoxy]phenyl}-5-(1,3-thiazol-2-yl)-1H-pyrrole-1-carboxylate (73 mg, 0.133 mmol) synthesized in Example (39a) was dissolved in dichloromethane (1.0 mL). Trifluoroacetic acid (2.0 mL) was added dropwise with stirring under nitrogen atmosphere, and stirring was carried out at room temperature for 2.5 hours. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: ethyl acetate/hexane=30%-40%) to afford the desired compound (56 mg, yield 94%) as a pale yellow liquid.

1. stirringstirring
2. distillationThe solvent was distilled off under reduced pressure
3. customthe resulting residue was purified
4. washsilica gel column chromatography (elution solvent: ethyl acetate/hexane=30%-40%)