This study was funded in part by grants from the Na- tional Natural Science Foundation of China (No. 20872071), the Tianjin Natural Science Foundation (No. 10JCZDJC17500), the National Key Project for Basic Research (No. 2010CB126105), the National Key Technology Research and Development Program (No. 2011BAE06B02) and the Foundation of Achievements Transformation and Spreading of Tianjin Agricultural Science and Technology (No. 201002250), Tianjin Key Technology Research and Development Program (No. 11ZCGYNC00100).
Twenty nine novel N-4-methyl-1,2,3-thiadiazole-5-carbonyl-N'-phenyl ureas were designed and synthesized, and their structures were confirmed by proton nuclear magnetic resonance (1H NMR), infra red spectroscopy (I...