Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (10): 20240369.doi: 10.7503/cjcu20240369

• Organic Chemistry • Previous Articles    

Design, Synthesis and Fungicidal Activity of Pyrazinamide Analogs

WANG Gang, LIANG Shuang, SHAN Zhonggang, YING Junwu, LYU Liang, LI Bin, YANG Huibin()   

  1. National Engineering Research Center of Pesticide,State Key Laboratory of the Discovery and Development of Novel Pesticide,Shenyang Sinochem Agrochemicals R&D Co. ,Ltd. ,Shenyang 110021,China
  • Received:2024-07-28 Online:2024-10-10 Published:2024-08-21
  • Contact: YANG Huibin E-mail:yanghuibin@yangnongchem.com
  • Supported by:
    the “12th Five Year Plan” National Science and Technology Support Project, China(2011BAE06B01-05)

Abstract:

Pyraziflumid was a novel pyrazinamide analog fungicide developed by Nihon Nohyaku Co. In this work, 16 pyrazinamide analogs were synthesized using substituted pyrazine acid and 2-methyl-3-nitrophenol as initial materials through 4 steps. The structures of the target compounds were confirmed by nuclear magnetic resonance (1H NMR, 13C NMR) and high resolution mass spectrometer(HRMS). The results of fungicidal activity at greenhouse showed that pyrazinamide analogs had excellent fungicidal activities against corn rust at 6.25 mg/L. Among them, the fungicidal activities of compounds 457815 and 16 against corn rust at 6.25 mg/L were 100%. Molecular docking simulations revealed that compound 16 interacted with TRP-173 of succinate dehydrogenase(SDH) through hydrogen bonding, which could explain the probable mechanism of action between compound 16 and the target protein. These results indicated that compound 16 might be a promising fungicide candidate and provide valuable reference for further investigation.

Key words: Pyrazinamide, Synthesis, Fungicidal activity, Molecular docking

CLC Number: 

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