设计,合成和新型含有氧化/硫化类型的四二胺衍生物的除草剂活性
Wang Geng1, Qi Zhang1, Li Liu1
1State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China.
Journal of agricultural and food chemistry
|July 26, 2024
概括
新型四甲胺衍生物被合成为强大的原氨基酸氧化酶 (PPO) 抑制剂. 化合物B11表现出显著的PPO抑制和有效的杂草控制与作物安全,表明其作为一种新的除草剂的潜力.
科学领域:
- 农业化学 农业化学
- 有机合成 有机合成
- 生物化学 生物化学
背景情况:
- 原氨基酸氧化酶 (PPO) 是除草剂开发的关键目标.
- 现有的PPO抑制剂面临挑战,需要发现新的化合物.
- 甲基甲胺衍生物为PPO抑制剂设计提供了一个有前途的支架.
研究的目的:
- 设计和合成新型四基胺衍生物作为潜在的PPO抑制剂.
- 评估这些化合物对尼古提亚烟草PPO (NtPPO) 的抑制活性.
- 评估合成化合物的除草剂效果和作物安全性.
主要方法:
- 设计和合成新型四二甲胺衍生物,其中包括氧沙/沙部分.
- 酶抑制试验以确定对NtPPO的抑制活性.
- 对关键杂草物种的除草活性进行温室检测和作物安全评估.
- 分子对接模拟以了解与NtPPO的结合相互作用.
主要成果:
- 化合物B11 (Ki = 9.05 nM) 和B20 (Ki = 10.23 nM) 显示出较高的NtPPO抑制比flumiclorac-pentyl.
- 化合物A20和B20在每年每公37.5克时实现了100%的杂草控制;化合物B11在较低的速率 (每年每公9.375-18.75克) 时显示出>90%的有效性.
- 与标准除草剂相比,B11化合物证明提高了大米,玉米和小麦的作物安全性.
- 分子对接表明B11与NtPPO的稳定结合,在Arg98.8处具有更强的键相互作用.
结论:
- 化合物B11被确定为一种强大的新型PPO抑制剂,具有显著的除草剂活性和有利的作物安全性.
- 合成的四甲胺衍生物代表了农业应用的一类有前途的除草剂.
- 进一步开发B11化合物可能会导致在作物生产中有效的杂草管理策略.
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