Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (8): 1683.doi: 10.7503/cjcu20180081

• Organic Chemistry • Previous Articles     Next Articles

Synthesis and Antibacterial Activities Evaluation of Chalconesemicarbazone Derivatives Bearing 1,3,4-Thiadiazole Moiety

WAN Jinlin1, WU Shouqun1, GAN Yiyuan2, MENG Jiao2, WANG Zhenchao2*(), OUYANG Guiping2*()   

  1. 1. State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research of Fine Chemicals,2. College of Pharmacy, Guizhou University, Guiyang 550025, China
  • Received:2018-01-25 Online:2018-08-10 Published:2018-05-27
  • Supported by:
    † Supported by the Guizhou Provincial Science and Technology Program of China(No. 20161055), the Young Talents Scientific Research Foundation of Guizhou Education Department of China(No. KY[2017]115) and the Project of State Key Laboratory of Functions and Applications of Medicinal Plants of China(No. 201707).

Abstract:

A series of chalconesemicarbazone derivatives bearing a 1,3,4-thiadiazole moiety was designed and synthesized from benzaldehyde and 1,3,4-thiadiazole. All the target compounds were characterized by means of nuclear magnetic resonance and high resolution mass spectrometer. The preliminary bioassay results indicated that all the title compounds exhibited a certain antibacterial activities in vitro against Xanthomonas oryzae pv. oryzae, Ralstonia solanacearum and Xanthomonas axonopodis pv. citri. Especially, compounds 7j and 7k displayed excellent antibacterial activities(100%) against the above three plant pathogenic bacteria at a concentration of 100 μg/mL. And the corresponding EC50 (50% effective concentration) values were 15.13, 30.90, 24.49 and 21.33, 24.54, 14.79 μg/mL, respectively, which were superior to the commercial antibacterial agent bismerthiazol(92.23, 58.88 and 123.02 μg/mL).

Key words: 1,3,4-Thiadiazole, Chalconesemicarbazone, Antibacterial activity

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