To contribute molecular diversity for novel fungicide development, a series of novel thiazole carboxamides were rationally designed, synthesized, and characterized with the succinate dehydrogenase (SDH) as target. Bioassay indicated that compound 6g showed the similar excellent SDH inhibition as that of Thifluzamide with IC50 of 0.56 mg/L and 0.55 mg/L, respectively. Some derivatives displayed improved
为了为新型杀菌剂的开发贡献分子多样性,以
琥珀酸脱氢酶(
SDH)为目标,合理设计,合成和表征了一系列新型
噻唑羧酰胺。
生物测定表明,化合物6g对
SDH的抑制作用与噻
氟甲酰胺相似,IC 50分别为0.56 mg / L和0.55 mg / L。一些衍
生物显示出对谷物纹枯病和菌核盘菌的体外杀菌活性提高,
EC 50为1.2-16.4 mg / L和0.5-1.9 mg / L。出人意料的是,6g的抗谷类葡萄球菌和核盘菌的体外杀真菌活性令人振奋
EC 50分别为6.2和0.6 mg / L,优于
硫氟酰胺,
EC 50分别为22.1和4.4 mg / L。此外,化合物6c和6g在甘蓝型油菜叶片上显示出出色的体内对链球菌的杀真菌活性,在2.0 mg / L时分别具有75.4%和67.3%的保护活性,而在
噻吩草胺中则无5.0 mg / L的活性。RNA测序对6g处理的核盘菌的转录组学分析表明,
琥珀酸脱氢酶
基因S