Design, Synthesis, and Structure–Activity Relationship of Novel Spiropyrimidinamines as Fungicides against <i>Pseudoperonospora cubensis</i>
作者:Jinlong Yang、Aiying Guan、Zhinian Li、Pengfei Zhang、Changling Liu
DOI:10.1021/acs.jafc.9b07055
日期:2020.6.17
elemental analyses, and MS spectra. The structure of compound 5 was further confirmed by X-ray diffraction. Bioassays indicated that a number of the title compounds exhibited some fungicidal activities against Pseudoperonospora cubensis. Especially, compound 5 displayed excellent activity (EC50 = 0.422 mg/L), significantly higher than those of the commercialized fungicides cyazofamid, flumorph, and diflumetorim
有害真菌和对可用杀真菌剂的抗药性严重威胁农作物的产量和质量;因此,寻找新的,高效的和能克服抵抗力的杀真菌剂仍然是农业科学家的迫切目标。在这项研究中,通过使用中间衍生化方法(IDM)设计和合成了一系列新型的spirpyyrimidinamine衍生物。通过1 H NMR,元素分析和MS光谱鉴定其结构。化合物5的结构通过X射线衍射进一步确认。生物分析表明,许多标题化合物对拟假孢子孢菌表现出一定的杀真菌活性。特别是化合物5表现出优异的活性(EC 50 = 0.422 mg / L),显着高于商品化杀菌剂氰基法米定,氟吗啡和双氟替林的活性。还讨论了结构-活性关系。结论是具有超强杀菌力和新颖结构的化合物5是有希望的农药化学杀真菌剂,可用于进一步开发。