Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (8): 913-922.DOI: 10.11944/j.issn.1000-0518.2016.08.150386

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Synthesis, Crystal Structure and Antimicrobial Activities of Novel Aroylhydrazones Containing Barbituric Acid Moiety

FENG Yang,LI Chuanbi(),ZHAO Liting,LI Jiaqi,WEI Ya'nan   

  1. Department of Chemistry,Jilin Normal University,Siping,Jilin 136000,China
  • Accepted:2016-03-24 Published:2016-07-21 Online:2016-07-21
  • Contact: LI Chuanbi
  • Supported by:
    Supported by the Foundation of Jilin Provincial Science and Technology Department(No.20140204080)

Abstract:

A series of novel acylhydrazone compounds was synthesized by a simple and efficient condensation of 1,3-dimethy-5-formyllbarbituric acids with aryloxy/arylamino acetylhydrazides and nitrogen-containing heterocyclic acetylhydrazides under microwave irradiation. The structures of all new compounds were confirmed by elemental analysis, IR, 1H NMR, mass spectrometry and single-crystal X-ray diffraction analysis. In vitro antimicrobial activity evaluation results show that some of the target compounds exhibit superior antimicrobial activities compared with ciprofloxacin. Structure-activity relationship analysis shows that when the aryl group is a nitrogen-containing heterocyclic compound, its antibacterial activity is significantly stronger than that of a benzene ring compound. One of target compounds 2t shows the strongest activities against S.Aureus with the minimum inhibitory concentration(MIC) of 0.8 g/L and against E.Coli with the MIC of 1.6 g/L.

Key words: barbituric acid, aryl acetohydrazide, microwave irradiation, crystal structure, antimicrobial activity