Trifluoroacetic acid → HCID 86714124, compound

Participants

Reaction Steps

{2-[(7-Benzyl-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carbonyl)-amino]-ethyl}-methyl-carbamic acid tert-butyl ester (25 mg, 0.055 mmol) was dissolved in CH2Cl2 (1.5 mL). Trifluoroacetic acid (1 mL) was added, and the mixture was stirred at r.t. for 2 h. Solvent and excess TFA were removed in vacuo. To the residue were added THF (3 mL), triethylamine (0.040 mL, 0.28 mmol), and ethyl trifluoroacetate (2 mL), and the resulting mixture was refluxed for 16 h. The mixture was concentrated to dryness, and the residue was dissolved in EtOAc and washed with 1 M HCl. The organic layers were dried over MgSO4 and concentrated. The crude product was purified by silica gel chromatography (0-5% MeOH/CH2Cl2) to give 5.4 mg of the title compound as a white solid. MS: (+) m/z 449.29 (M+1).

Provenance & Evidence