反应详情

2-Oxo-2,3-dihydrooxazole-5-carboxylic acid (7.1 mg, 55 μmol) and HATU (21 mg, 55 μmol) were combined in DMF (0.3 mL) and stirred at room temperature for 5 minutes. (2S,4R)-4-Amino-5-(5′-chloro-2′-fluorobiphenyl-4-yl)-2-hydroxymethyl-2-methylpentanoic acid (20 mg, 55 μmol) in DMF (0.5 mL) and DIPEA (29 μL, 164 μmol) were added, and the resulting mixture was stirred for 10 minutes at room temperature. The mixture was concentrated under reduced pressure and the residue was dissolved in AcOH purified by preparative HPLC to yield the title compound (3 mg). MS m/z [M+H]+ calc'd for C23H22ClFN2O6, 477.12. found 477.

1. stirringthe resulting mixture was stirred for 10 minutes at room temperature
2. concentrationThe mixture was concentrated under reduced pressure
3. dissolutionthe residue was dissolved in AcOH
4. custompurified by preparative HPLC