[Chemotherapeutically active nitro compounds. 2nd communication: Nitrodiphenyl sulfones (author's transl)].

A number of new 4-nitro-4'-amino-diphenyl sulfones and related compounds were prepared and investigated as to their therapeutic activity. They showed a good systemic activity against tubercle bacilli (M. bovis, NMRI mouse) and plasmodia (P. berghei, NMRI mouse). The test results reveal that the 4-nitro-4'-amino-diphenyl sulfones possess a spectrum of activity similar to that of diamino-diphenyl sulfone (DDS). It is assumed that 4-nitro-4'-amino-diphenyl sulfones in vivo are converted into DDS derivatives by reduction. The advantages of the new compounds, however, were too insignificant as compared to DDS to justify further extensive trials.