In the title mononuclear complex, [Zn(ClO(4))(C(17)H(11)N(3)O)(2)]ClO(4), the Zn(II) ion is coordinated in a distorted octa-hedral geometry. The dihedral angles between the pyridine rings and the mean planes of the 1,10-phenanthroline ring system in each of the 1-(1,10-phenanthrolin-2-yl)-2-pyridone (PP) ligands is 24.51 (10)° for the tridendate PP ligand and 73.55 (6)° for the bidentate PP lig...

Several compounds have been described as metabolites of nicotinic acid and nicotinamide in mammals. These are nicotinic acid (I), nicotinamide (2)) nicotinuric acid (2)) trigonelline (2)) W-methylnicotinamide (NMN) (3-6)) and 1-methyl-3-carboxylamide-6-pyridone (7, 8). According to the observations of various workers mammals may be divided into two groups in so far as the metabolism of nicotini...

Mimosine [β-[N-(3-hydroxy-4-oxypyridyl)]-α-aminopropionic acid] is a non-protein amino acid, and is a major compound present in all plant parts of Mimosaceae, which includes Leucaena (Leucaena leucocephala), Leucaena glauca, and other legumes belonging to Mimosa spp.. Structurally, mimosine is an analog of dihydroxyphenylalanine with a 3-hydroxy-4-pyridone ring instead of a 3,4-dihydroxy-phenyl...