含有库马林分子的希夫基衍生物的合成和抗真菌作用
Xin Zhang1, Hailing Fan1, Quanjia Chen2
1College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, 311 Nongda East Road, Urumqi 830052, China.
Journal of agricultural and food chemistry
|August 27, 2025
概括
新合成的库马林希夫基对植物病原体具有强烈的抗真菌活性. 化合物3m在体外和体内表现出显著的疗效,作为新型真菌杀菌剂开发的糖酸脱酶抑制剂.
科学领域:
- 农业化学
- 菌群学
- 有机合成
背景情况:
- 自然衍生化合物通常具有显著的生物活性,氨酸是植物中发现的关键二次代谢物.
- 植物病原菌对作物产量和质量构成重大威胁,需要开发有效的抗真菌剂.
- 从氨酸中提取的希夫基代表了一类具有潜在生物应用的化合物.
研究的目的:
- 合成和描述新型库马林希夫基衍生物.
- 评估这些衍生物对关键植物病原菌的体外和体内杀菌活性.
- 为了阐明最强效化合物的作用机制.
主要方法:
- 合成了30种新的库马林希夫基衍生物.
- 使用1H NMR,13C NMR和HR-MS进行表征.
- 在体外对Alternaria solani,Fusarium oxysporum,Botrytis cinerea和Alternaria alternata进行抗真菌检测.
- 在梨果实中对Botrytis cinerea进行活体疗效测试.
- 扫描电子显微镜 (SEM) 和传输电子显微镜 (TEM) 用于细胞分析.
- 糖酸脱酶 (SDH) 抑制测定和分子对接研究.
主要成果:
- 在实验室中,3g,3h和3m化合物对Botrytis cinerea和Fusarium oxysporum表现出90%以上的抑制.
- 化合物3m显示出优异的活性,EC50值为1. 62μg/ ml (B. cinerea) 和2. 50μg/ ml (F. oxysporum),表现优于对照组.
- 化合物3m在400微克/毫升的梨果上显示出94. 3%的治疗效果.
- 观察到细胞中断,包括泄漏和线粒体异常.
- 化合物3m强烈抑制SDH (IC50=0. 46μg/ ml),并通过键表现出强烈的结合亲和力.
结论:
- 新型库马林希夫基对植物病原菌具有显著的抗真菌特性.
- 化合物3m是新一代杀菌剂的一个非常有前途的候选物,通过SDH抑制作用.
- 这项研究为开发有效的抗击植物真菌病的策略提供了基础.
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