Synthesis of alkylaminoethanethiolsulfuric acids substituted with heterocyclic moieties

Several alkylaminoethanethiolsulfurie acids substituted with heterocyclic moieties have been synthesized to determine their effectiveness as radiation protection agents. These compounds are represented by the structure R(CH 2 ) 3 NH(CH 2 ) 2 S 2 O 3 H, where R is 8‐quinoly‐oxy (V), 8‐quinaldyloxy (IX), 5‐quinolyloxy (XII), 4‐pyridyl (XVI), and 4‐pyridylmethyl (XXIII). The diheterocyclic‐substituted compound, 2‐[bis‐(2‐phenyl‐1, 2, 3, 2 H ‐triazol‐4‐ylmethyl)amino]ethanethiolsulfuric acid (XIV) was also synthesized.