Abstract
In this paper we made a contentious effort to afford heterocyclic compounds with interesting biological activities. The reaction of guanidine with either activated methylene groups, arylhydrazono derivatives, dicyanopropene derivatives, malononitrile dimer or arylhydarazononitrile derivatives afforded diaminopyrimidine derivatives, aryldiazenyl pyrimidine derivatives, fused pyridopyrimidne derivatives and pyrimidopyridazine derivatives respectively.
Also the reaction of guanidine with phenylhydrazono carbonyl compounds produced phenyldiazenyl pyrimidine derivatives. The latter products were directed toward the reaction with either acetic anhydride or ethylcyanoacetate to form acetamidopyrimidine derivatives and cyanoacetamidopyrimidine derivatives respectively. The latter products underwent cyclization via reaction with either activated methylene groups or activated methylene carbonyl compounds afforded pyridopyrimidne derivatives.
The structures of the newly synthesized compounds were established using IR, H-1 NMR, C-13 NMR and mass spectrometry and their antitumor activity was investigated. Some of these compounds showed promising inhibitory effects on the three different cell lines.