Chin. J. Org. Chem. ›› 2017, Vol. 37 ›› Issue (6): 1542-1547.DOI: 10.6023/cjoc201701042 Previous Articles     Next Articles



戴红a, 陈佳a, 洪宇a, 袁斌颖a, 范崇光a, 马瑞媛a, 梁志鹏b, 石健b   

  1. a. 南通大学化学化工学院 南通 226019;
    b. 南通大学分析测试中心 南通 226019
  • 收稿日期:2017-01-20 修回日期:2017-02-21 发布日期:2017-02-27
  • 通讯作者: 范崇光,石健,
  • 基金资助:


Synthesis and Bioactivities of Novel Pyrazole Oxime Ester Derivatives Containing Pyridyl Moiety

Dai Honga, Chen Jiaa, Hong Yua, Yuan Binyinga, Fan Chongguanga, Ma Ruiyuana, Liang Zhipengb, Shi Jianb   

  1. a. College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019;
    b. Analysis and Testing Center, Nantong University, Nantong 226019
  • Received:2017-01-20 Revised:2017-02-21 Published:2017-02-27
  • Contact: 10.6023/cjoc201701042,
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21372135), the Research Foundation of the Six People Peak of Jiangsu Province (No. 2013-SWYY-013), and the Science and Technology Project Fund of Nantong City (Nos. CP12013002, MS22015020).

In order to explore novel pyrazole derivatives with good biological activities, a series of novel pyrazole oxime ester compounds containing pyridyl moiety were designed and synthesized according to the method of active substructure combination. The structures of the target compounds were determined by 1H NMR, 13C NMR and elemental analysis. Preliminary bioassay data indicated that some of the title compounds showed certain insecticidal activities. At a concentration of 500 μg/mL, seven compounds exhibited insecticidal activity against Oriental armyworm with 50%~90%, and six compounds exhibited insecticidal activity against Aphis medicaginis with 50%~90%. When the dosage was lowered to 100 μg/mL, 1,3-dimethyl-5-(4-chlorophenoxy)pyrazole-4-formyl-O-(2-chloropyridin-3-formyl)oxime (5f) and 1,3-dimethyl-5-(4-methylphenoxy)pyra-zole-4-formyl-O-(2-chloropyridin-3-formyl)oxime (5j) were still active against Aphis medicaginis with inhibitory values of 50% and 50%, respectively. Insecticidal activities against Nilaparvata lugens of 1,3-dimethyl-5-(3-fluorophenoxy)pyrazole-4-formyl-O-(2-chloropyridin-3-formyl)oxime (5b) and 5f were both 100% at 500 μg/mL. Additionally, 1,3-dimethyl-5-(4-fluorophenoxy)pyrazole-4-formyl-O-(2-chloropyridin-3-formyl)oxime (5c), 1,3-dimethyl-5-(3-chlorophenoxy)-pyrazole-4-for-myl-O-(2-chloropyridin-3-formyl)oxime (5e), 1,3-dimethyl-5-(4-trifluoromethoxyphenoxy)pyrazole-4-formyl-O-(2-chloro-pyridin-3-formyl)oxime (5i) and 5j displayed good anti-tumor activity against HepG2 cells with IC50 values of 2.6, 4.6, 1.8和1.1 μmol/L, respectively.

Key words: pyridine, pyrazole, synthesis, biological activity