有机化学    

研究论文

唑类修饰核丛青霉素衍生物的合成及其抗菌活性研究

李佚琳†, 刘铃铃†, 贾豪, 黎嘉琳, 龙玉华*   

  1. 华南师范大学化学学院 广州 510006
  • 收稿日期:2026-05-14 修回日期:2026-08-03
  • 作者简介:†共同第一作者
  • 基金资助:
    广东省自然科学基金(No. 2025A1515012235)资助项目.

Design, Synthesis and Antifungal Activity of Azole-Modified Sclerotiorin Derivatives

Yilin Li†, Linlin Liu†, Hao Jia, Jialin Li, Yuhua Long*   

  1. School of Chemistry, South China Normal University, Guangzhou, 510006
  • Received:2026-05-14 Revised:2026-08-03
  • About author:†These authors contributed equally to this work
  • Supported by:
    Natural Science Foundation of Guangdong Province (No. 2025A1515012235).

嗜氮酮类化合物具有广泛的药理活性,且受天然产物来源多种广泛抗植物病原菌衍生物应用启发,设计合成了17个唑类修饰的新型核丛青霉素(sclerotiorin)衍生物,并评估了其对5种植物病原菌的抗菌活性. 体外抗菌测试结果表明,化合物Sc-17对灰霉菌(Botrytis cinerea)的抑制活性最佳,其最低抑菌浓度(MIC)为25 μg/mL. 此外,化合物Sc-2、Sc-9和Sc-10对荔枝炭疽病菌(Colletotrichum litchi Trag)的抑制活性强于母体化合物sclerotiorin,三者的最低抑菌浓度(MIC)均为25 μg/mL. 进一步研究化合物Sc-17对灰霉菌(B. cinerea)的初步作用机制发现,化合物Sc-17可以呈现浓度依赖性的抑制灰霉菌的活性. SEM和TEM观察发现化合物Sc-17可通过破坏细胞膜、细胞壁,导致细胞内物质外泄、细胞器崩解达到抑菌效果.

关键词: 核丛青霉素, 灰霉菌, 荔枝炭疽病菌, 抗菌活性

Azaphilone derivatives have a wide range of pharmacological activities. Inspired by the application of various derivatives of natural products with broad-spectrum antiphytopathogenic activity, 17 novel Azole-Modified sclerotiorin derivatives with nitrogen-containing heterocyclic substitutions were designed and synthesized, and their antifungal activities against five plant pathogenic fungi were evaluated.The results of the in vitro antifungal test showed that compound Sc-17 exhibited the highest inhibitory activity against Botrytis cinerea, with its minimum inhibitory concentration (MIC) being 25 μg/mL.Furthermore, compounds Sc-2, Sc-9 and Sc-10 exhibited stronger inhibitory activity against the Colletotrichum litchi Trag than the parent compound sclerotiorin. The minimum inhibitory concentration (MIC) of all three compounds was 25 μg/mL. The in vivo test results indicated that compound Sc-17 shows significant post-harvest protection and treatment effects on the three types of fruits.Further studies on the initial mechanism of compound Sc-17's effect on Botrytis cinerea revealed that compound Sc-17 can exhibit concentration-dependent inhibition of the activity of Botrytis cinerea.SEM and TEM observations revealed that the compound Sc-17 could achieve antifungal effects by damaging the cell membrane and cell wall, causing the leakage of intracellular substances and the dissolution of organelles.

Key words: Sclerotiorin, Botrytis cinerea, Colletotrichum litchi Trag, antifungal activity