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FENG Zhangjun. QSAR Analysis of the Antibacterial Activities of 3-Substituted Sulfur-5-(2-Hydroxyphenyl)-4H-1,2,4-Triazole Compounds[J]. Journal of Beijing University of Technology, 2013, 39(1): 116-121.
Citation: FENG Zhangjun. QSAR Analysis of the Antibacterial Activities of 3-Substituted Sulfur-5-(2-Hydroxyphenyl)-4H-1,2,4-Triazole Compounds[J]. Journal of Beijing University of Technology, 2013, 39(1): 116-121.

QSAR Analysis of the Antibacterial Activities of 3-Substituted Sulfur-5-(2-Hydroxyphenyl)-4H-1,2,4-Triazole Compounds

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  • Received Date: June 02, 2011
  • Available Online: January 10, 2023
  • The MOPAC-AM1method was employed to optimize the molecular geometries of thirteen 3-substituted sulfur-5-(2-hydroxy-phenyl)-4H-1,2,4-triazole compounds.It was also used to calculate quantum chemical descriptors(Lt) such as EHOMO,ELUMO,QC1~QC8,QN1~QN3,QO and QS of the compounds.The antibacterial activities(IJ: IM,IE and IS) of these compounds to Monilia albican,Escherichia coli and Staphylococcus aureus along with the above descriptors were used to establish the quantitative structure-activity relationships(QSAR) with leaps-and-bounds regression analysis.It shows that the ELUMO and QS affect the bioactivities of these compounds directly.The insecticidal activities of the compounds increase with the increase of the QS;however,the higher the ELUMO is,the lower the IJ is.The correlation coefficients(R2) and leave-one-out(LOO) cross validation Rcv2 were 0.913 and 0.806 for IM model,0.907 and 0.838 for IE model,0.881 and 0.771 for IS model,respectively.The QSAR models have both favorable estimation stability and good prediction capability by using Radj2,F,Rcv2,VIF,AIC,FIT tests.The results present important information for the antibacterial mechanism and will be useful for theoretical designing new active title compounds.
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