Applied Biological Chemistry

, Volume 59, Issue 1, pp 9–14 | Cite as

Identification and formation pattern of metabolites of cyazofamid by soil fungus Cunninghamella elegans

  • Hyeri Lee
  • Eenhye Kim
  • Yongho Shin
  • Jong-Hwa Lee
  • Hor-Gil Hur
  • Jeong-Han KimEmail author


This study was performed to investigate the formation of microbial metabolites from cyazofamid by the soil fungus Cunninghamella elegans. The incubation of cyazofamid with C. elegans was conducted for 10 days. Cyazofamid disappeared after 7 days of incubation, producing three metabolites. Metabolites identified by liquid chromatography–tandem mass spectrometry were 4-chloro-5-(4-(hydroxymethyl)phenyl)-imidazole-2-carbonitrile (CHCN), 4-(4-chloro-2-cyanoimidazole-5-yl)benzoic acid (CCBA) and 4-chloro-2-cyano-5-(4-(hydroxymethyl)phenyl)N,N-dimethyl-1H-imidazole-1-sulfonamide (CCHS). A new metabolite, CCHS, was further confirmed by 1H-13C HSQC (heteronuclear single-quantum correlation) using nuclear magnetic resonance. As a possible metabolic pathway, cyazofamid could be oxidized to CCHS, degraded to CHCN and further oxidized to CCBA. The metabolic system of C. elegans would be a powerful tool for predicting and identifying phase I metabolites that could be formed in mammalian systems.


Cunninghamella elegans Cyazofamid Liquid chromatography–tandem mass spectrometry Metabolite Nuclear magnetic resonance 


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Copyright information

© The Korean Society for Applied Biological Chemistry 2015

Authors and Affiliations

  • Hyeri Lee
    • 1
    • 2
  • Eenhye Kim
    • 1
  • Yongho Shin
    • 1
  • Jong-Hwa Lee
    • 1
  • Hor-Gil Hur
    • 3
  • Jeong-Han Kim
    • 1
    Email author
  1. 1.Department of Agricultural Biotechnology and Research Institute of Agriculture and Life SciencesSeoul National UniversitySeoulRepublic of Korea
  2. 2.Environmental Measurement and Analysis CenterNational Institute of Environmental ResearchIncheonRepublic of Korea
  3. 3.Department of Environmental Science and EngineeringGwangju Institute of Science and TechnologyGwangjuRepublic of Korea

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