Methylamine → 7-(2,4-Dimethoxy-benzyl)-4-hydroxy-8-oxo-5,6,7,8-tetrahydro-[2,7]naphthyridine-3-carboxylic acid methylamide

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Reaction Conditions

Reaction Steps

A mixture of 7-(2,4-dimethoxy-benzyl)-4-hydroxy-8-oxo-5,6,7,8-tetrahydro-[2,7]naphthyridine-3-carboxylic acid methyl ester (15 mg, 0.040 mmol) and methylamine (0.8 mL, 2M in THF) in EtOH (2 mL) was heated at 80° C. in a sealed tube for 4 h. After the mixture was cooled to r.t., solvent was evaporated in vacuo. The residue was purified by silica gel chromatography (5-80% EtOAc/hexanes+2% AcOH) to give 12 mg of the title compound as a light yellow solid. MS: (+) m/z 372.27 (M+1).

Provenance & Evidence