Design, Synthesis and Antifungal Activities of Novel Strobilurin Derivatives Containing Pyrimidine Moieties
作者:Xiang Zhang、Yong-Xin Gao、Hui-Jun Liu、Bao-Yuan Guo、Hui-Li Wang
DOI:10.5012/bkcs.2012.33.8.2627
日期:2012.8.20
Strobilurins are one of the most important classes of agricultural fungicides. To discover new strobilurin derivatives with high activity against resistant pathogens, a series of novel $\beta}$-methoxyacrylate analogues were designed and synthesized by integrating substituted pyrimidine with a strobilurin pharmacophore. The compounds were confirmed and characterized by infrared, $^1H$ nuclear magnetic resonance, elemental analysis and mass spectroscopy. The bioassays indicated that most of the compounds (1a-1h) exhibited potent antifungal activities against Colletotrichum orbiculare, Botrytis cinerea Pers and Phytophthora capsici Leonian at the concentration of 50 $\mu}g/mL$. Exhilaratingly, compound 1d (R=3-trifluoromethylphenyl) showed better antifungal activity against all the tested fungi than the commercial strobilurin fungicide azoxystrobin.
嘧菌酯类是农业杀菌剂中最为重要的一类。为了发现对抗性病原菌具有高活性的新型嘧菌酯衍生物,通过将取代的嘧啶与嘧菌酯药效团整合,设计并合成了一系列新颖的β-甲氧基丙烯酸酯类似物。化合物通过红外、核磁共振氢谱、元素分析和质谱进行确认和表征。生物活性测试显示,大多数化合物(1a-1h)对胶孢炭疽菌、灰霉病菌和辣椒疫霉菌在50 μg/mL浓度下表现出强效的抗真菌活性。令人振奋的是,化合物1d(R=3-三氟甲基苯基)对所有测试真菌的抗真菌活性均优于商业嘧菌酯杀菌剂醚菌酯。