Investigation of the oxidation-reduction transformations of derivatives of dipyrimido-[4,5-b][4′,5′-e][1,4]thiazine

The oxidation-reduction characteristics of both the free radical and the reduced forms of dipyrimido[4,5-b][4′,5′-e][1,4]thiazine derivatives were studied by polarography. It was found that these compounds can participate in oxidation-reduction reactions, such as the oxidation of thiols and ascorbic acid (the radical form) and the reduction of oxygen (the reduced from). This makes it possible to regard them as a system capable of modelling certain oxidation-reduction processes that take place in the living organism.