已经研究了各种化合物作为治疗锥虫病的有效药物,但是在过去的30年中,没有新的药物上市。4-噻唑烷酮/噻唑作为优先结构和硫代氨基脲环类似物是新型抗锥虫药物设计中众所周知的支架。我们在这里介绍新的杂合分子的设计和合成,这些杂合分子带有由zo基与各种分子片段连接的噻唑烷酮/噻唑核。结构优化导致具有苯基吲哚或苯基咪唑并[2,1- b ] [1,3,4]噻二唑部分的化合物对布鲁氏锥虫和冈比亚锥虫具有优异的抗锥虫活性。生物学研究允许鉴定出亚微摩尔水平的IC 50,良好的选择性指数,对人原代成纤维细胞的相对较低的细胞毒性以及较低的急性毒性的化合物。
Generation of C<sub>2</sub>F<sub>5</sub>CHN<sub>2</sub>In Situ and Its First Reaction: [3+2] Cycloaddition with Alkenes
作者:Pavel K. Mykhailiuk
DOI:10.1002/chem.201304840
日期:2014.4.22
The novel chemical reagent, C2F5CHN2, is generated in situ from C2F5CH2NH2⋅HCl and sodium nitrite. It reacts with mono‐ and disubstituted electron‐deficient alkenes at room temperature to afford C2F5‐pyrazolines in excellent yields.
由C 2 F 5 CH 2 NH 2 · HCl和亚硝酸钠原位生成新型化学试剂C 2 F 5 CHN 2。它在室温下与单或双取代的缺电子烯烃反应,以极好的收率提供C 2 F 5-吡唑啉。
Visible light-induced N-methyl activation of unsymmetric tertiary amines
In the presence of methylene group, selective N-methyl activation of tertiary amines has been accomplished with the aid of visiblelight using organic photocatalyst under air. This protocol explores numerous aliphatic and aromatic substituted tetra-hydroquinoline analogues from various tertiary amines and maleimides. Furthermore, this approach was applied to activate the methyl group of N-methyl carbazole
Synthesis of New 1Н-Pyrrolo[3,4-с]pyridine-1,3(2Н)-diones
作者:S. V. Klyuchko、S. A. Chumachenko、O. V. Shablykin、V. S. Brovarets
DOI:10.1134/s1070363221030026
日期:2021.3
Abstract A method for the synthesis of a series of new substituted 1H-pyrrolo[3,4-c]pyridine-1,3(2H)-diones was proposed based on the Diels–Alder type reaction of 4-methoxy-1,3-oxazoles with maleimide derivatives.
摘要 提出了一种基于4-甲氧基-1的狄尔斯-阿尔德反应的合成一系列新的取代的1 H-吡咯并[3,4- c ]吡啶-1,3(2 H)-二酮的方法, 3-恶唑与马来酰亚胺衍生物。
Mechanochemical Diels-Alder Cycloaddition Reactions for Straightforward Synthesis of endo-Norbornene Derivatives
Under mechanochemical milling conditions, Diels-Alder cycloaddition of cyclopentadiene with maleic anhydride and maleimide derivatives proceeded very smoothly, affording endo-norbornenes exclusively in quantitative yield. All the transformations were accomplished at room temperature without using any catalyst or organic solvent, thus the workup and purification procedure is very simple. Control experiments on traditional and other tentative conditions were also investigated.
Reactions with Maleimides: Syntheses of New Furylpyrazole Derivatives
作者:Sami S. Ghabrial、Mohamed M. H. Arief、Sadek E. Abdou
DOI:10.1002/ardp.19853181108
日期:——
New furylpyrrolopyrazole derivatives were synthesised by reacting N‐arylmaleimides with furfural phenylhydrazone. The products are to be tested for their biological activities and for chemical transformations.