Some Tautomers of Amrinone and their Interaction with Calcium Cation - DFT Treatment

Amrinone, is a pyridine phosphodiesterase 3 inhibitor. It is prescribed to patients suffering from congestive heart failure. In the present study, amrinone and it tautomers have been studied computationally within the limitations of the density functional theory and the basis set employed (B3LYP/6-31++G(d,p)). The calculations have also been extended to interaction of those tautomers with calcium cation. All the tautomers and their composites with the calcium cation are electronically and structurally stable. Some quantum chemical and spectral properties of those systems have been obtained and discussed.