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Insecticidal Activity of N'-phenvl-N-Methylformamidine Analogues against Two Spotted Spider Mite (Tetranychus urticae) and Design of New Potent Compounds  

Lee, Jae-Whang (Department of Applied Biology & Chemistry, College of Agriculture and Life Science, Chungnam National University)
Choi, Won-Seok (Department of Applied Biology & Chemistry, College of Agriculture and Life Science, Chungnam National University)
Lee, Dong-Guk (Moghu Research Center Ltd.)
Chung, Kun-Hoe (Moghu Research Center Ltd.)
Ko, Young-Kwan (Korea Research Institute of Chemical Technology)
Kim, Tae-Joon (Dongbu Advanced Research Institute)
Sung, Nack-Do (Department of Applied Biology & Chemistry, College of Agriculture and Life Science, Chungnam National University)
Publication Information
The Korean Journal of Pesticide Science / v.14, no.3, 2010 , pp. 191-198 More about this Journal
Abstract
To predict and design of new potent insecticidal compounds, the two dimensional quantitative structure-activity relationships (2D-QSARs) and molecular hologram quantitative structure-activity relationships (HQSARs) between the various physicochemical parameters as descripters of N'-phenyl-N-methylformamidine analogues (1-22) and their insecticidal activity against the two spotted spider mite (Tetranychus urticae) were discussed quantitatively. From 2D-QSAR models (1 & 3), the width ($B_2$) of $R_3$-group as sterically factor and optimal total dipole moment (TDM=2.025D) of $R_4$-group were mainly influenced to increase the activity. Therefore, the activities were depend upon the $R_3$- and $R_4$-groups. Particularly, it is predicted that the activity of newly designed potent compound (PI; $EC_{50}$=0.516 ppm) by 2D-QSAR models (3) and HQSAR model F2 was about 34.3 fold higher than that of the commercialized insecticide, Amitraz ($EC_{50}$=17.7 ppm).
Keywords
2D-QSAR & HQSAR; inhibitory activity; N'-phenyl-N-Methylformamidine analogues; Two spotted spider mites (Tetranychus urticae);
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Times Cited By KSCI : 6  (Citation Analysis)
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