Construction of Cholesterol Oxime Ether Derivatives Containing Isoxazoline/Isoxazole Fragments and Their Agricultural Bioactive Properties/Control Efficiency
作者:Hui Xu、Kong Zhang、Min Lv、Meng Hao
DOI:10.1021/acs.jafc.1c01884
日期:2021.7.28
spectrometry (HRMS), IR, and 1H NMR spectroscopy. Particularly, the Z configurations of oxime fragments at the C-7 position of target compounds were undoubtedly determined by X-ray crystallography. Against Mythimna separata Walker, compounds 3e, I-8, I-14, and II-3 showed 2.4–2.7-fold growth inhibitory activity of the precursor cholesterol. Against Plutella xylostella Linnaeus, compounds I-6, I-7, and I-9 showed
为探索基于天然产物的农药候选物和胆固醇在农业中的高附加值应用,半制备含胆固醇异恶唑啉/异恶唑片段(I-1∼I-16和II-1∼II-18)的肟基醚衍生物胆固醇的结构优化。它们的结构通过旋光、高分辨率质谱 (HRMS)、IR 和1 H NMR 光谱表征。特别是,目标化合物 C-7 位肟片段的Z构型无疑是由 X 射线晶体学确定的。针对Mythimna separata Walker,化合物3e、I-8、I-14和II-3显示出前体胆固醇 2.4-2.7 倍的生长抑制活性。针对Plutella xylostella Linnaeus,化合物I - 6、I-7和I-9显示出 2.4-2.7 倍的胆固醇口服毒性。针对柑橘蚜虫,化合物2e和II-15 分别表现出 4.9 和 5.8 倍的胆固醇杀蚜活性。值得注意的是,它们对A. citricola显示出良好的控制效果(3.0-5.0 倍有希望的控制效率为1)在温室里。构效关系