Trifluoroacetic acid → HCID 60151400, compound

Participants

Reaction Steps

{3-[(7-Benzyl-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carbonyl)-amino]-propyl}-carbamic acid tert-butyl ester (26 mg, 0.058 mmol) was dissolved in CH2Cl2 (2 mL). Trifluoroacetic acid (1 mL) was added, and the mixture was stirred at r.t. for 1 h. Solvent and excess TFA were removed in vacuo. To the residue were added CH2Cl2 (3 mL), triethylamine (0.080 mL, 0.58 mmol), and trimethylsilyl isocyanate (0.050 mL, 0.29 mmol), and the resulting mixture was stirred for 16 h. The mixture was diluted with EtOAc and washed with 0.1 M HCl. The organic layer was dried over MgSO4 and concentrated. The crude product was purified by silica gel chromatography (0-10% MeOH/CH2Cl2) to give 9.3 mg of the title compound. MS: (+) m/z 418.31 (M+Na).

Provenance & Evidence