Synthesis, antioxidant and antitumoral activities of 5′-arylchalcogeno-3-aminothymidine (ACAT) derivativesThe authors declare no competing interests.Electronic supplementary information (ESI) available: Experimental procedures, NMR data and spectra, HRMS and a full description of the biological activities. See DOI: 10.1039/c6md00640j

This article presents the preparation and in vitro biological activities of new 5′-arylchalcogeno-3-aminothymidine derivatives as antioxidants (inhibition of lipid peroxidation, scavenging of the free radical 2,2-diphenylpicrylhydrazyl and demonstration of a thiol peroxidase-like activity) as well as antitumoral agents against bladder carcinoma 5637. The chalcogeno-aminothymidines presented prominent activity in the tests for both biological properties, showing a direct relation with the chalcogenium atom. This article presents the preparation and in vitro biological activities of new 5′;-arylchalcogeno-3-aminothymidine derivatives as antioxidants as well as antitumoral agents against bladder carcinoma 5637.