Hydrochloric Acid → 3-[(1-Benzyl-8-cyano-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-2,2-dimethyl-propionic acid

Participants

Reaction Steps

A mixture of 3-[(1-benzyl-8-cyano-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-2,2-dimethyl-propionic acid methyl ester (50 mg, 0.098 mmol), 2M NaOH (3 mL) and MeOH (3 mL) was stirred at r.t. for 1 h. 1M HCl was added to acidify the mixture, and the resulting suspension was extracted with EtOAc. The organic layer was dried over MgSO4 and concentrated. The crude product was chromatographed (0-30% EtOAc/hexanes+2% AcOH) to give 26 mg of the title compound. MS: (+) m/z 497.15 (M+1).

Provenance & Evidence