MOLECULAR STRUCTURE AND RADIOPROTECTIVE ACTIVITY OF DERIVATIVES OF AMINOETHYLTHIOSULFATES AND AMINOTHIOLS

An analysis of the relationship of radioprotective properties in the series of derivatives of S-2-aminoethylthiosulphates and S-2-aminothiols with their electronic characteristics and physicochemical parameters was performed. The result indicates the existence of a statistically significant relationship between the radioprotective activity and the value of the parameters of the radioprotector molecule: the lower free molecular orbital, the product of the ionization potential and polarizability, and the distribution coefficient in the octanol-water system. In the process of implementing the protective properties of a radioprotector, the ability of the drug to participate in the formation of charge transfer complexes for temporary inhibition of biochemical processes is of great importance. It was shown that the protective effect correlates with the ability of these compounds to participate in the electron transfer process, the energy of intermolecular interaction in the drug-damaged biomolecule system, and the transport properties of radioprotector molecules in the body. It was established that protection can be carried out through the formation of complexes in which molecules of S-2-aminoethylthiosulphate and S-2-aminothiol derivatives act as ligands, and the protective effect increases with an increase in the bond of the complexes and the mobility of the radioprotector molecules.