Derivatives of sterically hindered phenols and pyridinecarboxylic acids as prospective radioprotectors

New compounds consisting of 2,6-di-tert-butylphenol and isomeric pyridinecarboxamide moieties as well as their water-soluble hydrochlorides were synthesized. The compounds appeared to be potent antioxidants and radioprotectors, with no significant difference in activity between the pyridine bases and their salts. The cytotoxicity assay showed no significant toxic impact from any of the substances, making them promising candidates for further investigation.