The direct N-monomethylation of aromatic primary amines, including arylamines, arylsulfonamides and amino-azoles, using methanol as a methylating agent has been accomplished in the presence of a [Cp*IrCl2]2/NaOH system. From both synthetic and environmental points of view, the reaction is highly attractive because of low catalyst loading, broad substrate scope and excellent selectivities.
Direct N-alkylation of amino-azoles with alcohols catalyzed by an iridium complex/base system
作者:Feng Li、Haixia Shan、Lin Chen、Qikai Kang、Po Zou
DOI:10.1039/c1cc14861c
日期:——
The direct and regioselective N-alkylation of amino-azoles to the corresponding 2-N-(alkylamino)azoles using various alcohols as alkylating agents with good to excellent yields has been accomplished by an iridium complex/base system.
Identification of novel 1,2,3,6-tetrahydropyridyl-substituted benzo[ d ]thiazoles: Lead generation and optimization toward potent and orally active EP 1 receptor antagonists
described the design, synthesis and evaluation of a novel series of benzo[d]thiazole derivatives toward an orally active EP1 antagonist. Lead generation studies provided benzo[d]thiazole core from the four designedscaffolds. Optimization of this scaffold in terms of EP1 antagonist potency and ligand-lipophilicity efficiency (LLE; pIC50-clogP) led to a 1,2,3,6-tetrahydropyridyl-substituted benzo[d]thiazole
在这里,我们描述了针对口服活性EP1拮抗剂的一系列新的苯并[d]噻唑衍生物的设计,合成和评估。铅生成研究从四个设计的支架中提供了苯并[d]噻唑核心。根据EP1拮抗剂效能和配体亲脂性效率(LLE; pIC50-clogP)对该支架进行优化,可得到1,2,3,6-四氢吡啶基取代的苯并[d]噻唑衍生物7r(IC50 1.1nM; LLE 4.7),当在17-苯基trinor-PGE2(17-PTP)诱导的大鼠膀胱过度活动症模型中十二指肠内给药时显示出良好的药理作用。
Synthesis and biological evaluation of novel <i>N</i>-pyridylpyrazolecarboxamides containing benzothiazole
作者:Ming-Zhen Mao、Hai-Yang Wang、Wei Wang、Bin-Ke Ning、Yu-Xin Li、Li-Xia Xiong、Zheng-Ming Li
DOI:10.1080/10426507.2016.1224876
日期:2017.1.2
series of novel N-pyridylpyrazolecarboxamides containing benzothiazole were designed and synthesized. The target compounds were identified by 1H NMR,13C-NMR, IR, high-resolution mass spectrum (HRMS) and elemental analysis. The bioactivities of the new compounds against oriental army worm (Mythimnaseparata) and diamond back moth (Plutellaxylostella) were evaluated. The results of bioassays indicated that
图形摘要 摘要 设计并合成了一系列含有苯并噻唑的新型 N-吡啶基吡唑甲酰胺。目标化合物经1H NMR、13C-NMR、IR、高分辨质谱(HRMS)和元素分析鉴定。评价了新化合物对东方粘虫(Mythimnaseparata)和小菜蛾(Plutellaxylostella)的生物活性。生物测定结果表明,一些化合物在测试浓度下显示出良好的活性。化合物 Ij 在 2.5 mg/L 时对小菜蛾表现出 100% 的杀幼虫活性,而在 10 mg/L 时 Ij 对 Mythimnaseparata 的活性为 100%。