HCID 89771889, compound → HCID 53482635, compound

Participants

Reaction Steps

To a solution of (3R,4R)-benzyl 3-(((S)-N-((R)-1-(5-benzyl-2-(2,5-difluorophenyl)oxazol-4-yl)-2,2-dimethylpropyl)-2-hydroxypropanamido)methyl)-4-fluoropyrrolidine-1-carboxylate (6.5 mg, 0.8 μmol) in degassed ethanol (980 μL, 0.01 M solution) was added Pd/C (5.0 mg) under anhydrous N2 atmosphere. After flushed with hydrogen gas, the reaction mixture equipped with a hydrogen gas balloon was stirred at room temperature for 30 min. The reaction mixture was filtered through Celite® pad that was washed with methanol and EtOAc. The volatile organic filtrate was removed in vacuo to give the crude amine, which 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. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by preparative TLC to yield (S)-N-((R)-1-(5-benzyl-2-(2,5-difluorophenyl)oxazol-4-yl)-2,2-dimethylpropyl)-N-(((3S,4R)-4-fluoropyrrolidin-3-yl)methyl)-2-hydroxypropanamide (2.5 mg, 48.2%) as the free amine. LC/MS (uplc): MH+ 530.3, 0.94 min.

Provenance & Evidence