Synthesis and Fungicidal Activity of Aryl Carbamic Acid-5-aryl-2-furanmethyl Ester
作者:Ying Li、Bao-Ju Li、Yun Ling、Hong-Jian Miao、Yan-Xia Shi、Xin-Ling Yang
DOI:10.1021/jf9043277
日期:2010.3.10
Chitin synthesis inhibitors (CSIs) have been well-known as insect growth regulators (IGRs) but rarely found as fungicides in agriculture. To find novel CSIs with good activity, benzoylphenylurea, a typical kind of CSIs, was chosen as the lead compound and 26 novel aryl carbamic acid-5-aryl-2-furanmethyl esters were designed by converting the urea linkages of benzoylphenylureas to carbamic acid esters
甲壳素是昆虫表皮和真菌细胞壁的主要结构成分,但在植物和脊椎动物中却不存在,被认为是害虫防治剂的安全和选择性目标。几丁质合成抑制剂(CSIs)众所周知是昆虫生长调节剂(IGR),但在农业中却很少被用作杀真菌剂。为了找到具有良好活性的新型CSI,选择典型的CSI苯甲酰苯基脲作为先导化合物,并通过将苯甲酰基苯基脲的脲键转化为氨基甲酸酯设计了26种新型的芳基氨基甲酸-5-芳基-2-呋喃甲酯。并将苯胺部分变成呋喃甲基。合成了标题化合物,并通过IR,1确认了其结构1 H NMR和元素分析。进行了初步的杀虫和杀真菌生物测定。结果表明,标题化合物对淡色库蚊和小菜蛾没有杀虫作用,但大多数化合物对棒杆菌,黄瓜枯草芽孢杆菌,灰葡萄孢菌和尖孢镰刀菌均表现出良好的杀菌活性。特别是,化合物V-4,V-6,V-7和V-8对四种菌株的活性比商业化杀菌剂更好。形态学结果表明该化合物V-21干扰了C. cassiicola的
Combination of MS Binding Assays and affinity selection mass spectrometry for screening of structurally homogenous libraries as exemplified for a focused oxime library addressing the neuronal GABA transporter 1
作者:Jürgen Gabriel、Georg Höfner、Klaus T. Wanner
DOI:10.1016/j.ejmech.2020.112598
日期:2020.11
resulting oximelibrary was screened accordingly toward the GABAtransporter subtype 1 (GAT1), a drug target for several neurological disorders. After assessing sublibraries’ activities for inhibition of reporter ligand binding, hits in active ones were directly identified. This could be achieved by recording mass transitions for the reporter ligand as well as those predicted for the library components
这项研究提出了一种有效的筛选方法,该方法基于基于质谱(MS)的结合测定(MS Binding Assays)和亲和力选择质谱(ASMS)的组合,这些筛查被定制用于筛选具有相同质谱碎片模式的结构均质文库。在具有羟胺官能团的乳酸衍生物与醛反应后,针对几种神经系统疾病的药物靶点GABA转运蛋白亚型1(GAT1)相应地筛选所得的肟库。在评估子图书馆抑制报告配体结合的活性后,直接鉴定出活性物质的命中。这可以通过在多反应监测模式下使用三重四极杆质谱仪运行的单个LC-MS / MS中记录报告配体的质量跃迁以及库组分的预测跃迁来实现。可以通过计算IC可靠地确定具有预定义亲和力的匹配来自文库成分和报道分子配体的特定结合浓度的50值。该策略的应用揭示了六个命中,其中两个命中被重新合成以进行进一步的生物学评估。因此,最好的一个在MS结合分析中显示出ap K i为7.38,在[ 3 H] GABA吸收分析中显示出pIC
Novel Allosteric Ligands of γ-Aminobutyric Acid Transporter 1 (GAT1) by MS Based Screening of Pseudostatic Hydrazone Libraries
作者:Tobias J. Hauke、Thomas Wein、Georg Höfner、Klaus T. Wanner
DOI:10.1021/acs.jmedchem.8b01602
日期:2018.11.21
study describes the screening of dynamic combinatorial libraries based on nipecotic acid as core structure with substituents attached to the 5- instead of the common 1-position for the search of novel inhibitors of the GABAtransporterGAT1. The generated pseudostatic hydrazone libraries included a total of nearly 900 compounds and were screened for their binding affinities toward GAT1 in competitive mass
A series of new push-pull compounds were synthesised by reaction of 5-aryl- furan-2-carboxaldehydes and furo[b]pyrrole type aldehydes with benzothiazolium salts. These newcondensationproducts represent highly conjugated systems that have potential biological activity. The reaction of furo[b]pyrrole type aldehydes with benzothiazolium salts give potential precursors of cyaninedyes.
Reaction of Substituted Furan-2-carboxaldehydes and Furo[b]pyrrole Type Aldehydes with Hippuric Acid
作者:Zita Puterová、Heinz Sterk、Alžbeta Krutošíková
DOI:10.3390/90100011
日期:——
3-oxazol-5(4H)-ones were prepared by reactions of hippuric acid with substituted furan-2-carboxaldehydes or furo[b]pyrroletype aldehydes. The reactivity of various furan-2-carboxaldehyde derivatives in this reaction is discussed. The effect of microwave irradiation on some condensation reactions was compared with "classical" conditions. The results show that microwave irradiation shortens the reaction
4-杂亚芳基-2-苯基-1,3-恶唑-5(4H)-酮是通过马尿酸与取代的呋喃-2-甲醛或呋喃[b]吡咯型醛反应制备的。讨论了该反应中各种呋喃-2-甲醛衍生物的反应性。将微波辐射对某些缩合反应的影响与“经典”条件进行了比较。结果表明,微波辐射缩短了反应时间,同时提供了相当的产率。元素分析、UV、IR 和 1D NMR 证明了新合成化合物的结构。2D NMR 光谱测量证实碳-碳双键处的构型对应于产物的纯 E 异构体。