Synthesis and insecticidal/acaricidal activity of novel 3-(2,4,6-trisubstituted phenyl)uracil derivatives
作者:Kazuo Yagi、Kazuhiko Akimoto、Norihiko Mimori、Toshiro Miyake、Masaki Kudo、Kazutaka Arai、Shigeru Ishii
DOI:10.1002/(sici)1526-4998(200001)56:1<65::aid-ps90>3.0.co;2-s
日期:2000.1
6-trisubstituted phenyl)uracil derivatives has been synthesised and assayed for insecticidal/acaricidal activity. The assay indicated certain requirements for optimal insecticidal activity, which can be summarised as follows: (a) the substituents on the phenyl ring should possess hydrophobicity and electron-withdrawing properties, and the sum of their volumes determines the level of activity; (b) the substituent
已合成了一系列新型 3-(2,4,6-三取代苯基) 尿嘧啶衍生物并测定了杀虫/杀螨活性。该测定表明对最佳杀虫活性的某些要求,可概括如下:(a)苯环上的取代基应具有疏水性和吸电子特性,其体积之和决定活性水平;(b) 尿嘧啶环上 6 位的取代基还应具有吸电子性和疏水性,以及正确的体积;(c) 尿嘧啶环上的 1 位应未被取代以对抗 Nephotettix cincticeps 和 Epilachna vigintioctopunctata,但长度为 C3 至 C4 的取代基可能最适合对抗 Tetranychus urticae 的活性;(d) 尿嘧啶环 5 位上的某些取代基对 E vigintioctopunctata 和 T urticae 具有活性,但对 N cincticeps 没有活性;(e) 尿嘧啶环 2 位上的硫代羰基的效果不如羰基。在测定的化合物中,3-(2,6-二氯-4-三氟甲基