Design, synthesis and herbicidal activity of novel cyclohexanedione derivations containing pyrazole and pyridine groups as potential HPPD inhibitors
作者:Shuai-Tao Hou、Ling Han、Wen-Rui Li、Guang-Yu Dai、Yu Liu、Ai-Min Lu、Chun-Long Yang、Min Chen
DOI:10.1007/s11030-024-10836-6
日期:——
in the development of herbicides. To discover novel HPPD inhibitors with unique molecular, 39 cyclohexanedione derivations containing pyrazole and pyridine groups were designed and synthesized. The preliminary herbicidal activity test results showed that some compounds had obvious inhibitory effects on monocotyledon and dicotyledonous weeds. The herbicidal spectrums of the highly active compounds were
4-羟基苯丙酮酸双加氧酶(EC 1.13.11.27;HPPD)是除草剂开发中的重要靶酶之一。为了发现具有独特分子结构的新型HPPD抑制剂,设计并合成了39种含有吡唑和吡啶基团的环己二酮衍生物。初步除草活性试验结果表明,部分化合物对单子叶和双子叶杂草均具有明显的抑制作用。进一步测定了高活性化合物的除草谱,化合物G31在75.0和37.5 g ai/ha剂量下对车前子和荠菜的抑制率最好,达到90%以上,与防治除草剂甲基磺草酮。此外,化合物G31表现出优异的作物安全性,在225 g ai/ha的剂量下,对玉米、高粱、大豆和棉花的伤害率小于或等于10%。分子对接和分子动力学模拟分析表明,化合物G31能够与拟南芥HPPD(A t HPPD)稳定结合。该研究表明化合物G31可以作为新型HPPD抑制剂开发的先导分子结构,为设计具有独特分子支架的新型除草剂提供了思路。 图形概要