Synthesis of Novel 3-Chloropyridin-2-yl-Pyrazole Derivatives and their Insecticidal, Fungicidal Activities and QSAR Study
作者:Ji-Feng Zhang、Chen Liu、Yi Ma、Bao-Lei Wang、Li-Xia Xiong、Shu-Jing Yu、Zheng-Ming Li
DOI:10.2174/1570180811310060005
日期:2013.5.1
In our early study, a series of anthranilic diamides containing acylthiourea linker (C) was reported to display
favorable activities. Based on that research, four series of novel pyridylpyrazole derivatives (D-G) derived from C were
designed and synthesized. Totally 24 compounds were synthesized and all the compounds were characterized by melting
points, 1H NMR, 13C NMR and HRMS. Bioassay results indicated that compounds 5b, 5c and 6b showed 100 % insecticidal
activities against oriental armyworm (Mythimna separata) at 200mg/L. Their fungicidal activities against A. solani,
F. graminearum, P. capsici, S. sclerotiorum, B. cinerea and R. solani were evaluated and the results indicated that compounds
7a-g which contained acylguanidine linker showed favourable antibacterial activity against B. cinerea, among
which 7d and 7f showed 97.5 % inhibitory activities against B. cinerea at 50mg/L. To further explore the comprehensive
structure-activity relationship on the basis of insecticidal activity data, comparative molecular field analysis (CoMFA)
was performed, and a statistically reliable model with good predictive power (r2 = 0.972, q2 = 0.604) was achieved.
在我们早期的研究中,报道了一系列含有酰基硫脲连接基(C)的邻氨基苯甲酰胺显示了良好的活性。基于这一研究,设计并合成了从C衍生出的四个系列新型吡啶基吡唑衍生物(D-G)。共合成24个化合物,所有化合物均通过熔点、1H NMR、13C NMR和HRMS进行了表征。生物测定结果表明,化合物5b、5c和6b对东方粘虫(Mythimna separata)在200mg/L下显示出100%的杀虫活性。评估了它们对A. solani、F. graminearum、P. capsici、S. sclerotiorum、B. cinerea和R. solani的杀菌活性,结果显示含有酰基胍连接基的化合物7a-g对B. cinerea显示出良好的抗菌活性,其中7d和7f在50mg/L下对B. cinerea显示出97.5%的抑制活性。为进一步探究基于杀虫活性数据的全面构效关系,进行了比较分子场分析(CoMFA),并获得了统计上可靠且预测能力良好的模型(r2 = 0.972,q2 = 0.604)。