It has been previously established [1] that the salts of N- aryl- and N-heterylsuccinamic acids with 2-amino-2-thia- zoline possess certain antiviral activity. At the same time, analogous properties were reported for some salts ofp-arni- nobenzene sulfamide derivatives [2]. ... Me NH u HN - - C (III, X); \ NH 2 N N --HN----~SI~Et (IV, Xl); ... --N O (VII, XIV); k___/ N /~ (VIII-XIV); R'=-(I-VII) , H2N S ... I Institute of Biochemistry, Vilnius, Lithuania. 2 Research Institute of ...