反应详情

To a solution of ((3R,4R)-benzyl 3-(((S)-N-((R)-1-(5-benzyl-2-(2,5-difluorophenyl)thiazol-4-yl)-2,2-dimethylpropyl)tetrahydrofuran-2-carboxamido)methyl)-4-fluoropyrrolidine-1-carboxylate (30 mg, 0.043 mmol) in degassed ethanol (0.5 mL, 0.1 M solution) was added Pd/C (3 mg, 10 wt %) under anhydrous N2 atmosphere. After flushed with hydrogen gas, the reaction mixture equipped with a hydrogen gas balloon was stirred at room temperature for 2 h. The reaction mixture was filtered through Celite® pad that was washed with EtOAc. The volatile organic filtrate was removed in vacuo to give the crude amine. The crude product was purified by preparative reverse phase HPLC. The combined fractions of the product were neutralized with saturated NaHCO3 solution, which was then extracted with EtOAc (200 mL). The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The dried product was then dissolved in acetonitrile and water (1:1 ratio) and lyophilized for 48 h The white powdery (S)-N-((R)-1-(5-benzyl-2-(2,5-difluorophenyl)thiazol-4-yl)-2,2-dimethylpropyl)-N-(((3S,4R)-4-fluoropyrrolidin-3-yl)methyl)tetrahydrofuran-2-carboxamide was obtained in 14% (5.4 mg) as the free amine. LC/MS (uplc): MH+ 572.0, 1.04 min.

1. customAfter flushed with hydrogen gas
2. customthe reaction mixture equipped with a hydrogen gas balloon
3. filtrationThe reaction mixture was filtered through Celite® pad that
4. washwas washed with EtOAc
5. customThe volatile organic filtrate was removed in vacuo
6. customto give the crude amine
7. customThe crude product was purified by preparative reverse phase HPLC
8. extractionwas then extracted with EtOAc (200 mL)
9. dry with materialThe organic layer was dried over anhydrous sodium sulfate
10. filtrationfiltered
11. concentrationconcentrated in vacuo
12. dissolutionThe dried product was then dissolved in acetonitrile
13. waitwater (1:1 ratio) and lyophilized for 48 h