有机化学 ›› 2020, Vol. 40 ›› Issue (7): 1948-1954.DOI: 10.6023/cjoc202002019 上一篇    下一篇

研究论文

新型N-[2-((取代苯基)氨基)吡啶-3-基]嘧啶甲酰胺的合成、杀菌活性及分子对接

时艳华, 张帅, 万福贤, 孙昌兴, 姜林   

  1. 山东农业大学化学与材料科学学院 山东泰安 271018
  • 收稿日期:2020-02-17 修回日期:2020-03-15 发布日期:2020-04-10
  • 通讯作者: 姜林 E-mail:jiangl@sdau.edu.cn
  • 基金资助:
    山东省自然科学基金(No.ZR2014BM030)资助项目.

Synthesis, Fungicidal Activity and Molecular Docking Study of Novel N-[2-((Substitutedphenyl)amino)pyridin-3-yl]-pyrimidine-4-carboxamides

Shi Yanhua, Zhang Shuai, Wan Fuxian, Sun Changxing, Jiang Lin   

  1. College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong 271018
  • Received:2020-02-17 Revised:2020-03-15 Published:2020-04-10
  • Supported by:
    Project supported by the Natural Science Foundation of Shandong Province (No. ZR2014BM030).

为寻找新型结构的琥珀酸脱氢酶抑制剂,以高效杀菌剂啶酰菌胺为先导化合物,设计、合成了17种N-[2-((取代苯基)氨基)吡啶-3-基]-4-甲基-2-甲硫基嘧啶-5-甲酰胺(4a4g)和N-[2-((取代苯基)氨基)吡啶-3-基]-4-甲氧基-2-甲硫基嘧啶-5-甲酰胺(4h4q),并通过1H NMR、13C NMR和MALDI-TOF-MS确证了化合物的结构.离体杀菌活性试验表明,在剂量为50 μg/mL时,16种化合物对菌核菌表现出较高的杀菌活性,抑制率在90%以上.一些化合物在此剂量下对灰霉菌显示出中等活性,抑制率为70%~84%.分子对接研究揭示了具有较高活性的化合物,N-[2-((3-氟-4-甲基苯基)氨基)吡啶-3-基]-2-甲硫基-4-甲氧基嘧啶-5-甲酰胺(4p)与琥珀酸脱氢酶(SDH)靶酶氨基酸形成4个氢键和一个阳离子-π相互作用.

关键词: 嘧啶, 酰胺, 合成, 杀菌活性, 分子对接

To explore succinate dehydrogenase inhibitor with new structure, the excellent fungicide boscalid was chosen as a lead compound, and seventeen N-[2-((substitutedphenyl)amino)pyridin-3-yl]-4-methyl-2-(methylthio)pyrimidine-5-carbox-amides (4a~4g) and N-[2-((substitutedphenyl)amino)pyridin-3-yl]-4-methoxy-2-(methylthio)pyrimidine-5-carboxamides (4h~4q) were designed and synthesized. The structures of target compounds were characterized by 1H NMR, 13C NMR, and MALDI-TOF-MS. The in vitro bioassay showed that sixteen compounds possessed high fungicidal activity against S. sclerotiorum with more than 90% inhibitory rate at 50 μg/mL, and some compounds showed moderate activity against B. cinerea at the same dose with inhibitory rate in the range of 70%~84%. The molecular docking study revealed that four hydrogen bonds and one cation-π interaction were formed between N-[2-((3-fluoro-4-methylphenyl)amino)pyridin-3-yl]-4-methoxy-2-(methyl-thio)pyrimidine-5-carboxamide (4p) and succinate dehydrogenase (SDH) enzyme.

Key words: pyrimidine, carboxamide, synthesis, fungicidal activity, molecular docking