Theoretical Study of Flavopiridol Binded to Transition Metals

More recently medical chemistry research has been focused on proteins that drive and controlcell cycle progression. Among them, the cyclin dependent kinases (cdk’s) are a group ofserine/threonine kinases, which rule the transition between successive stages of the cell cycle. Theactivity of cdk’s is regulated by multiple mechanisms, including binding to cyclins, which is a broadclass of positive regulatory cdk-binding proteins. Among the chemical agents that act selectively ascdk inhibitors are flavonoids,flavopiridol is a semisynthetic flavonoid.Theoretical study is performedon flavopiridol using quantum chemical calculations. Interactions between flavopiridol withtransition metals were studied at HF/6-31G*, and HF/6-311G** levels of theory. Ab initio method at HF level of theory was used. Conformations, optimized parameters, bond length, were computed for metalated andisolated flavopiridol. Flavopiridol can be Metalated from its binding sites (oxo and hydroxyl groups) and theenergies of these compounds were computed.Abbreviations and notations: HF, Hartree-Fock; Cdk , Cyclin dependent kinases.