反应详情

To a solution of (2S,4R)-methyl 4-(allylthio)-4-(biphenyl-4-yl)-1-((S)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoyl)pyrrolidine-2-carboxylate (362 mg, 0.639 mmol) in THF (5 mL) and MeOH (5.00 mL) was added pre-made solution of lithium hydroxide hydrate (80 mg, 1.916 mmol) in Water (5 mL). The resulting cloudy solution was stirred at room for 24 h. Quenched with 5% citric acid, extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, filtered, evaporated, to afford the desired product (2S,4R)-4-(allylthio)-4-(biphenyl-4-yl)-1-((S)-2-(tert-butoxycarbonylamino)-3,3-dimethylbutanoyl)pyrrolidine-2-carboxylic acid (312 mg, 0.553 mmol, 87% yield) as a white solid. LC-MS (retention time: 2.96 min, method B), MS m/z 553 (M+H).

1. customQuenched with 5% citric acid
2. extractionextracted with EtOAc
3. washThe organic layer was washed with brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customevaporated