Reactions with maleimides, IX+: Synthesis and antischistosomal activity of several new pyrrolidino [3,4-b] benzthiazolo [3',2'-a'] -pyridinedione derivatives

Several new pyrrolidino [3,4-b] benzothiazolo [3',2'-a'] pyridinedione derivatives were synthesized via the dipolar cycloaddition reaction of several 2-benzothiazolylacrylonitriles with several N-arylmaleimides. The antischistosomal activity of a variety of these derivatives is tested. Structures are based on elemental and spectral data