In previous experiments reported from this laboratory (1) N-methyl-4-pyridone-5-carboxamide was isolated from rat urine and identified as the major urinary metabolite of the pyridine nucleotides. Recently Wieland et al. (2) synthesized this 4-pyridone and have found their synthetic product to be identical with the compound isolated from rat urine. Experiments have now been carried out to determ...

The structure-based design, chemical synthesis, and biological evaluation of various 2-pyridone-containing human rhinovirus (HRV) 3C protease (3CP) inhibitors are described. These compounds are comprised of a peptidomimetic binding determinant and a Michael acceptor moiety, which forms an irreversible covalent adduct with the active site cysteine residue of the 3C enzyme. The 2-pyridone-contain...

A 2-pyridone ring is a frequently occurring subunit in natural products, biologically active compounds, and pharmaceutical targets. Thus, the selective synthesis of substituted 2-pyridone derivatives through decoration and/or formation of pyridone rings has been one of the important longstanding subjects in organic synthetic chemistry. This minireview focuses on recent advances in site-selectiv...

The aldehyde oxidases from rabbit and hog livers have been purified to homogeneity by modifications of and additions to previously published procedures. The final preparations were judged to be homogeneous on the basis of ultracentrifugal, electrophoretic, chromatographic, spectral, and kinetic criteria. A number of physical and kinetic properties of the homogeneous enzymes have been determined...