摘要：The reaction of lauroyl isothiocyanate 1 with enaminonitrile derivative 2 furnished N -(6-cyano-3, 4-diphenylthieno[2,3- c ]pyridazin-5-yl-carbamothioyl)dodecanamide 3 , which was used as precursor for the synthesis of novel heterocyclic systems. Polyfunctional pyrimidine and fused pyrimidine derivatives were obtained by the cyclization of compound 3 under different basic conditions as well as its reactions with thiourea, o -aminothiophenol, hydrazine hydrate, phenyl hydrazine, ethyl phenyl acetate or ethyl benzoyl acetate. The structures of the new compounds were confirmed by microanalytical and spectral properties. The synthesised compounds were tested in-vitro for their antimicrobial activity and showed congruent results against most of the tested microorganisms compared to the standard drugs Gentamycin and Ketoconazol.
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