文献类型： 外文期刊
作者： Wu, Ren-Hai 1 ; Hu, Shan 2 ; Xu, Han-Hong 2 ; Wei, Xiao-Yi 2 ; Hu, Lin 3 ;
作者机构： 1.S China Agr Univ, Minist Educ, Lab Insect Toxicol, Guangzhou 510642, Guangdong, Peoples R China
2.S China Agr Univ, Minist Educ, Lab Insect Toxicol, Guangzhou 510642, Guangdong, Peoples R China; S China Agr Univ, Minist Educ, Key Lab Pesticide & Chem Biol, Guangzhou 510642, Guangdong, Peoples R China; Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Henan, Peoples R China
3.S China Agr Univ, Minist Educ, Lab Insect Toxicol, Guangzhou 51064
关键词： 2,5-diarylethynylthiophene;alpha-terthienyl;photolarvicidal activity;Plutella xylostella
期刊名称：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY （ 影响因子：6.252； 五年影响因子：5.375 ）
ISSN： 1011-1344
年卷期： 2007 年 88 卷 2-3 期
页码：
收录情况： SCI
摘要： The photoactivatable insecticides have photoactive features and broad applications. The derivatives of the alpha-terthienyl analogues were synthesized for evaluating their photolarvicidal activities and 13 2,5-diarylethynylthiophenes were investigated to determine their effect on the second-instar larvae of Plutella xylostella L. Based on their photolarvicidal activities, the 2,5-Dithienylethyllylthiophene, 2,5-Diphenylethynylthiophene, 2,5-Di-4-Methoxylphenylethynylthiophene and 2,5-Di-3,4-Methylenedioxyphenylethynylthiophene were found to be the most potent compounds, and their LC50 Values were 34.1 mg l(-1), 48.4 mg l(-1), 60.8 mg l(-1) and 42.7 mg l(-1), respectively. The relationship analysis between structure and activity showed that the middle thiophene ring played an important role on the activities. The electron donor substituents increased the photolarvicidal activities and the length of the alkyl chain had negative influence on the activities. (C) 2007 Published by Elsevier B.V.
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