反应详情

Trifluoroacetic acid (2 mL) was added to a mixture of 3-[(1-benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-2,2-dimethyl-propionic acid tert-butyl ester (22 mg, 0.042 mmol) and CH2Cl2 (3 mL), and the resulting mixture was stirred for 2 h. Solvent was evaporated in vacuo, and the residue was dissolved in saturated NaHCO3 and washed several times with ether. The aqueous layer was acidified to pH about 2 and extracted with EtOAc. The organic layer was dried over MgSO4 and concentrated to give 11.8 mg of the title compound as a light yellow solid. MS: (+) m/z 472.34 (M+1).

1. customSolvent was evaporated in vacuo
2. dissolutionthe residue was dissolved in saturated NaHCO3
3. washwashed several times with ether
4. extractionextracted with EtOAc
5. dry with materialThe organic layer was dried over MgSO4
6. concentrationconcentrated