Synthesis and Fungicidal Activity of (<i>E</i>
)-5-[1-(2-Oxo-1-oxaspiro[4,5]dec/non-3-en-3-yl)ethylidene]-2-aminoimidazolin-4-one Derivatives
作者:Bo Tang、Aiying Guan、Yu Zhao、Jiazhen Jiang、Mingan Wang、Ligang Zhou
DOI:10.1002/cjoc.201600794
日期:2017.7
The novel fungicidal agents, (E)‐5‐[1‐(2‐oxo‐1‐oxaspiro[4,5]dec/non‐3‐en‐3‐yl)ethylidene]‐2‐aminoimidazolin‐ 4‐one derivatives, were designed and synthesized in moderate to excellent yields in four steps using α‐hydroxyketone and diketene as raw materials and characterized by HR‐ESI‐MS, 1H NMR and X‐ray diffraction. The preliminary bioassay showed that some of these compounds, such as 5e, 6a, 6e, and
新型杀菌剂(E)-5- [1-(2-氧代-氧杂螺[4,5] dec /非-3-烯-3-基)亚乙基] -2-氨基咪唑啉-4-酮衍生物以α-羟基酮和双烯酮为原料,通过四个步骤以中等至极好的收率设计和合成,并通过HR-ESI-MS,1 H NMR和X射线衍射进行表征。初步的生物测定表明,其中的某些化合物(例如5e,6a,6e和7 h)对核盘菌,3b,3c,4c和7 h的抑制率分别为87.8%,91.3%,89.9%和87.8%在浓度为50 µg / mL时,辣椒辣椒疫霉菌分别具有96.4%,92.5%,90.3%和76.9%的抑制率。这些化合物表现出对显著杀菌活性S. scleotiorum和辣椒疫霉用EC 50个值2.56-11.60微克/毫升,和化合物6E和7小时表现出对孢子萌发抑制作用较弱S. scleotiorum,而孢子萌发P化合物7 h溶液强烈抑制辣椒。扫描电镜(SEM)和透射电镜(TEM)观察表明,化合物7