Structural diversity derivatization and studies on the nematicidal activity of tropane derivatives
作者:Aoyun Lu、Yiting Zheng、Tao Li、Jiayi Wang、Gonghua Song
DOI:10.1016/j.phytol.2024.01.003
日期:2024.2
Starting from the structure of MDL 72222 and its analogs, the known 5-HT3 receptor antagonists with verified nematicidal activity, we evaluated a diverse array of tropane derivatives that are characterized by the introduction of a variety of pentatomic heterocycles as bioisosteric replacements for the ester moiety of these 5-HT3 receptor antagonists. The in vitro nematicidal activities of all the target
从 MDL 72222 及其类似物(已知的具有杀线虫活性的 5-HT 3受体拮抗剂)的结构出发,我们评估了多种托烷衍生物,其特征是引入多种五原子杂环作为酯的生物电子等排替代品这些5-HT 3受体拮抗剂的部分。测试了所有目标化合物对松材线虫和南方根结线虫的体外杀线虫活性。初步构效关系 (SAR) 研究表明,5-HT 3受体拮抗剂中的酯功能可以被噻唑部分(类似物5 )取代,具有中等至良好的杀线虫活性。具体而言,化合物5bd对松材线虫表现出优异的杀线虫活性,LC 50/72 h为7.80mg/L,并且在40mg/L时对南方根结线虫表现出85%的死亡率。此外,对类似物5的逐步结构修饰导致发现了结构不同的化合物47b,该化合物具有先进的杀线虫活性,其针对松材线虫的LC 50/72 h为 5.96 mg/L 。