Design, synthesis, and fungicidal activities of imino diacid analogs of valine amide fungicides
作者:Man Sun、Hui-Hui Yang、Lei Tian、Jian-Qiang Li、Wei-Guang Zhao
DOI:10.1016/j.bmcl.2015.10.089
日期:2015.12
The novel imino diacid analogs of valine amides were synthesized via several steps, including the protection, amidation, deprotection, and amino alkylation of valine, with the resulting structures confirmed by (1)H and (13)C NMR and HRMS. Bioassays showed that some of these compounds exhibited good fungicidal activity. Notably, isopropyl 2-((1-((1-(3-fluorophenyl)ethyl)amino)-3-methyl-1-oxobutan-2
缬氨酸酰胺的新型亚氨基二酸类似物是通过几个步骤合成的,包括缬氨酸的保护,酰胺化,脱保护和氨基烷基化,所得结构通过(1)H和(13)C NMR和HRMS证实。生物测定表明,这些化合物中的一些表现出良好的杀真菌活性。值得注意的是,异丙基2-(((1-((1-(3-(氟代苯基)乙基)氨基)-3-甲基-1-氧代丁烷-2-基)氨基)丙酸酯5i在50%的浓度下显示出对细粒白菊(Erysiphe graminis)的浓度为3.9μM,其效力水平与参比过氧化氧合酶非常相似,后者在该浓度下的活性为60%。本工作表明,缬氨酸酰胺的亚氨基二酸类似物可能是开发抗小麦白粉病的新型杀菌剂的潜在有用关键化合物。