Discovery of Pyrazine-Carboxamide-Diphenyl-Ethers as Novel Succinate Dehydrogenase Inhibitors via Fragment Recombination
作者:Hua Li、Meng-Qi Gao、Yan Chen、Yu-Xia Wang、Xiao-Lei Zhu、Guang-Fu Yang
DOI:10.1021/acs.jafc.0c05646
日期:2020.11.25
and recombined to produce a pyrazine-carboxamide-diphenyl-ether scaffold as a new SDHI. After substituent optimization, compound 6y was successfully identified with good inhibitory activity against porcine SDH, which was about 2-fold more potent than pyraziflumid. Furthermore, compound 6y exhibited 95% and 80% inhibitory rates against soybean gray mold and wheat powdery mildew at a dosage of 100 mg/L
新型琥珀酸脱氢酶抑制剂(SDHIs)的发现已引起全世界的广泛关注。在本文中,通过理解SDHIs的配体-受体相互作用机制,提出了一种片段重组策略来设计新的SDHIs。鉴定了三个片段,分别是吡嗪氟酰胺的吡嗪,氟苯菌灵的二苯醚,以及来自吡二氟甲酚和氟吡菌胺的延长的酰胺连接基,并重组产生了吡嗪-羧酰胺-二苯基醚支架,作为新的SDHI。取代基优化后,化合物6Y被成功地识别与抗猪SDH,约为良好的抑制活性2倍pyraziflumid更有效。此外,化合物6y在体内测定剂量为100 mg / L时,对大豆灰霉和小麦白粉病的抑制率分别为95%和80%。当前工作的结果表明,吡嗪-羧酰胺-二苯基醚支架可以作为发现新的SDHIs的新起点。