Synthesis and pharmacological investigations of 3-(aminoalkylene)-1-aryl-2-thioxo-4,5-imidazolidinedione and 2,4,5-imidazolidinetrione derivatives

New derivatives of 2-thioxo-4,5-imidazolidinedione (3-6, 10, 11) and 2,4,5-imidazolidinetrione (7, 12) were synthesized by N,N'-acylation of asymmetric thioureas and ureas by oxalyl chloride. The obtained compounds were screened for their central action, mainly anticonvulsant activity.

Synthesis and pharmacological activity of some 2,3-dihydrofuran-2,3-dione derivatives

New 2,3-dihydrofuran-2,3-dione derivatives (1-11) were obtained by condensation of oxalyl chloride with Schiff bases of acetyl- or benzoylacetone and aromatic amines. These compounds showed only weak sedative action and weak analgesic effect.