On the basis of ATP adenine, a series of adenine and purine derivatives was prepared andtested for their ability to inhibit a spectrum of disease-related kinases. There has been scantresearch investigating the potential of cosubstrate derived kinase inhibitors for other kinasesthan CDKs. Our inhibitor design combined the purine system from the original cosubstrateATP and phenyl moieties in order to explore possible interactions with the different regions ofthe ATP binding site in several disease-related protein kinases. There have been a number ofhits for the assayed substances, which led us to conclude that the spectrum of compounds mayprove to be a valuable tool kit for the evaluation of bonding and selectivity patterns for a widevariety of kinases.