Synthesis and pharmacological investigation of compounds containing a 2-thioxopyrrolidine-4,5-dione moiety.

The synthesis of two Schiff bases of aryl methyl ketones and ethylenediamine 1c, 1d, symmetric adducts of aryl isothiocyanates with Schiff bases 2d-2m and 2-thioxopyrrolidine-4,5-dione derivatives 4d-4m obtained by condensation of oxalyl chloride with Schiff bases of aroylthioacetic acid anilides and ethylenediamine is described. Some of 13 investigated compounds 4a, 4b, 4d-4l, 5a, 5b of 2-thioxopyrrolidine-4,5-dione type showed sedative and analgesic action.