N-tert-Butyl-N,N'-diacylhydrazines are nonsteroidal ecdysone agonists used as environmental benign pest regulators. In this paper, two series of new N-tert-butyl-N,N'-diacylhydrazine derivatives containing 1,2,3-thiadiazole were designed and synthesized. All structures of the synthesized compounds were confirmed by proton nuclear magnetic resonance (H-1 NMR), infrared spectroscopy (IR), and high-resolution mass spectrometry (HRMS). Bioasssay results indicated that most of the synthesized compounds possessed good insecticidal activities against Plutella xylostella L. and Culex pipiens pallens as compared with the positive control, tebufenozide. The results of this study indicated that 1,2,3-thiadiazoles, as an important active substructure, could improve or maintain the activity of the dicylhydrazines and favor novel pesticide development.
Synthesis and bioactivity of N-tert-butyl-N′-acyl-5-methyl-1,2,3-thiadiazole-4-carbohydrazides
作者:Wu Tao Mao、Hui Zhao、Zhi Jin Fan、Xiao Tian Ji、Xue Wen Hua、Tatiana Kalinina、Yu. Morzherin Yury、A. Bakulev Vasiliy
DOI:10.1016/j.cclet.2012.09.024
日期:2012.11
A series of novel N-tert-butyl-N'-acyl-5-methyl-1,2,3-thiadiazole-4-carbohyclrazides were designed and synthesized. Their structures were characterized by melting points, H-1 NMR, IR, ESI-MS, and elemental analysis. The bioassay tests indicated that compound 7o exhibited excellent direct anti-TMV activity and induction activity in viva at 50 mu g/mL, which was better than that of Ninamycin and tiadinial. Our studies indicated that 1,2,3-thiadiazole was an active substructure for novel pesticide development. (C) 2012 Zhi Jin Fan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.