Modulation of reactivity of cyclic adenosine monophosphate phosphodiesterase under the effect of pyridinecarboxylic acid derivatives and Pt(IV) metal complexes on their basis

: The effect of substituted nicotinamides and isonicotinamides and Pt(IV) metal complexes based on the substituted nicotinamides and isonicotinamides on the activity of cAMP phosphodiesterase was studied. Isonicotinamide derivatives are efficient enzyme activators, whereas substituted nicotine amides are inhibitors of enzymatic cAMP phosphodiesterase activity; their inhibitory potency is comparable to that of theophylline used as a reference drug.