反应详情

To a stirred solution of tert-butyl 5-(ethylamino)-4-[({5-[4-(2-fluoro-5-{[(2-fluoro-5-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrol-3-yl}carbonyl)amino]-5-oxopentanoate (75 mg, 0.11 mmol) in 5 ml of methylene chloride was added 1 ml of TFA. The mixture was stirred at room temperature for 90 minutes, and evaporated to dryness under reduced pressure. The residue was re-dissolved in 5 ml of methanol and poured into 100 ml of water with vigorous stirring. The precipitates were filtered, washed with water and dried in vacuo to give 5-(ethylamino)-4-[({5-[4-(2-fluoro-5-{[(2-fluoro-5-methylphenyl)amino]carbonyl}phenoxy)pyridin-2-yl]-1H-pyrrol-3-yl}carbonyl)amino]-5-oxopentanoic acid as white solid. Yield: 60 mg, 87%.

1. customevaporated to dryness under reduced pressure
2. dissolutionThe residue was re-dissolved in 5 ml of methanol
3. additionpoured into 100 ml of water with vigorous stirring
4. filtrationThe precipitates were filtered
5. washwashed with water
6. customdried in vacuo