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A study of the anti-tuberculosis activity against  Mycobacterium tuberculosis  ATTC 27294 and an X-ray structural determination of ( E )-2-[2-(arylidene)hydrazinyl]pyrimidine,  1 , and ( E )- N  1 -(arylidene)pyrimidine-2-carbohydazide,  2 , derivatives are presented. The effect of the substituents in the aryl moiety on the antituberculosis (anti-TB) activities of  1  and  2  is compared with that of other heteroaryl hydrazonyl and acylhydrazonyl derivatives. The biological activities of  1  do not depend on the coordinating ability of the substituted aryl group: in  2 , the most effective aryl group is 5-nitrofuranyl. The structure determinations of ( E )-2-((2-(pyrimidin-2-yl)hydrazono)methyl)-phenol, ( E )- N ′-(2,5-dihydroxybenzylidene)pyrimidine-2-carbohydrazide and of the hydrate of ( E )- N ′-(2-hydroxy-4-methylbenzylidene)pyrimidine-2-carbohydrazide, and a literature search of related structures in the CCDC data base, allowed an examination of the more important interactions, including the occurrence of X–Y⋯π interactions.

zeitschrift für naturforschung b

A study of antituberculosis activities and crystal structures of ( E )-2-[2-(arylidene)hydrazinyl]pyrimidine and ( E )- N  1 -(arylidene)pyrimidine-2-carbohydrazide derivatives