10.1021/jm00170a005
The research investigates purine derivatives and analogues as competitive inhibitors of human erythrocyte membrane phosphatidylinositol 4-kinase, with the aim of finding a potent, cell-penetrating inhibitor. The study explores the structural requirements for binding to the ATP site of PI 4-kinase and optimizes inhibitory potency. Key chemicals involved include various purine derivatives such as adenine, 6-substituted purines, 8-substituted adenines, and 9-substituted adenines. The most potent inhibitor synthesized was 9-cyclohexyladenine, with an apparent Ki value of 3.7 pM. Other chemicals like benzoic acid, polyphosphoric acid, and formamide were used in the synthesis of these compounds. The research also involved the use of ATP as the substrate in enzyme assays to determine the inhibitory activities of the synthesized compounds.