从烯到兰特利烯模仿剂:计算机辅助设计,简单的制备和优秀的杀虫剂配置
Shu-Zhen Xiang1, Kong-Jun Liu1,2, Jin-Jing Wang1
1State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals of Guizhou University, Guiyang 550025, China.
Journal of agricultural and food chemistry
|October 4, 2024
概括
研究人员从中开发了新的杀虫剂模仿剂,简化了合成并增强了原子经济. 与现有选择相比,这些新化合物具有较高的杀虫力和较低的抗性潜力.
科学领域:
- 农业化学 农业化学
- 杀虫剂开发 杀虫剂开发
- 计算化学的计算化学
背景情况:
- 甲 (CHL) 是一种有效的杀虫剂,但它面临着复杂合成,低产量和增加昆虫抵抗力的挑战.
- 需要新型杀虫剂,改进合成路径和降低耐药性潜力至关重要.
研究的目的:
- 通过计算机辅助药物设计来设计和合成新的Chlorantraniliprole (CHL) 仿制剂.
- 为了简化CHL的合成途径,同时保持或改善杀虫剂活性.
- 开发新的杀虫剂,减少诱导昆虫耐药性的潜力.
主要方法:
- 计算机辅助药物设计和分子对接以分析CHL-氨酸受体 (RyR) 相互作用.
- 通过去除一个原子并形成一个pyrrole环来修改CHL结构.
- 使用具有成本效益的前体并避免有毒试剂,精简合成路径的设计.
- 新型化合物的合成和杀虫剂评估,包括确定LC50值.
- 对昆虫排毒酶的抑制作用的分析.
- 分子对接,分子动力学 (MD) 模拟和密度函数理论 (DFT) 计算.
主要成果:
- 鉴定了CHL-RyR结合中的关键相互作用,表明去除是可行的.
- 成功设计和合成CHL模仿物,化合物A和B,产量超过60%.
- 化合物A和B对*P. xylostella*和*M. separate*表现出强大的杀虫活性 (LC50:0.12-1.47毫克L-1).
- 这些模仿者对昆虫排毒酶表现出抑制作用,这表明耐药性风险较低.
- 已证明对抗耐药害虫种群的杀虫功效.
- 来自计算分析的结构洞察力可能解释了增强的活动.
结论:
- 从CHL的pyrazole部分中去除原子并形成一个pyrrole环,导致简化合成和强大的杀虫剂.
- 新型化合物A和B代表了开发下一代杀虫剂的有希望的线索,这些杀虫剂的抗药性降低了.
- 计算方法有效指导了高效和强大的杀虫剂分子的设计.
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