Design, synthesis and fungicidal activity evaluation of novel pyrimidinamine derivatives containing phenyl-thiazole/oxazole moiety
作者:Zhongzhong Yan、Aiping Liu、Yingcan Ou、Jianming Li、Haibo Yi、Ning Zhang、Minhua Liu、Lu Huang、Jianwei Ren、Weidong Liu、Aixi Hu
DOI:10.1016/j.bmc.2019.05.029
日期:2019.8
Diflumetorim is a member of pyrimidinamine fungicides that possess excellent antifungal activities. Nevertheless, as reported that the activity of diflumetorim to corn rust (Puccinia sorghi) was not ideal (EC50 = 53.26 mg/L). Herein, a series of novel pyrimidinamine derivatives containing phenyl-thiazole/oxazole moiety were designed based on our previous study and the structural characteristics of
地氟美林是嘧啶胺杀菌剂的成员,具有优异的抗真菌活性。然而,据报道,双氟甲蝶呤对玉米锈病(高粱)的活性并不理想(EC50 = 53.26 mg / L)。在此,根据我们先前的研究和双氟甲草胺的结构特征,设计合成了一系列含有苯基-噻唑/恶唑部分的新型嘧啶胺衍生物,并对其进行了生物测定并进行了生物测定,以发现具有优异抗真菌活性的新型杀菌剂。在这些化合物中,T18具有最佳的杀真菌活性,分别对高粱P.orghi和E. graminis的EC50值为0.93 mg / L和1.24 mg / L,具有明显优于商业杀真菌剂diflumetorim,tebuconazole和flusilazole的防治效果。细胞的细胞毒性结果表明,化合物T18的毒性低于双氟甲蝶呤。此外,DFT计算表明,苯基噻唑/恶唑部分在活性提高中起着不可争辩的作用,这将有助于将来设计和开发更有效的化合物。