Anti-HIV activity of stilbene-related heterocyclic compounds
摘要:
Viral transcription has not been routinely targeted in the development of new antiviral drugs. This crucial step of the viral cycle depends on the concerted action of cellular and viral proteins such as NF-kappa B and Tat. In the present study, stilbene-related heterocyclic compounds including benzalphthalide, phthalazinone, imidazoindole and pyrimidoisoindole derivatives are tested for their anti-HIV activity. Original assays based on recombinant viruses were used to evaluate HIV replication inhibition and stably transfected cell lines were used to evaluate inhibition of Tat and NF-kappa B proteins. Some of the stilbene-related heterocyclic compounds analysed displayed anti-HIV activity through interference with NF-kappa B and Tat function. Moreover, compounds inhibiting both targets displayed a stronger activity on viral replication. (c) 2006 Elsevier Ltd. All rights reserved.
A simple and efficient palladium-catalyzed intramolecular carbonylativesynthesis of isocoumarins and phthalides from the easily available starting materials by employing phenylformate as a CO surrogate has been achieved. The approach affords target compounds in good to excellent yields with the advantages of lower toxicity, milder conditions, easy operation and wide functional group tolerance.
Design, synthesis and biological evaluation of substituted flavones and aurones as potential anti-influenza agents
作者:Anand S. Chintakrindi、Devanshi J. Gohil、Abhay S. Chowdhary、Meena A. Kanyalkar
DOI:10.1016/j.bmc.2019.115191
日期:2020.1
We designed a series of substituted flavones and aurones as non-competitive H1N1 neuraminidase (NA) inhibitors and anti-influenza agents. The molecular docking studies showed that the designed flavones and aurones occupied 150-cavity and 430-cavity of H1N1-NA. We then synthesized these compounds and evaluated these for cytotoxicity, reduction in H1N1 virus yield, H1N1-NA inhibition and kinetics of
novel nickel catalyst for the reaction of tert-butyl isocyanide insertion was discovered. In this approach, 1,2-bis(diphenylphosphino)ethane (L3) serves as an efficient ligand, thereby allowing the preparation of lactones from (o-bromophenyl)phenylethanone derivatives. It is noteworthy that this is the first example of nickel acting as a metal catalyst in the reactions of tert-butyl isocyanide insertion
Antimalarial activity of imidazo[2,1-a]isoindol-5-ol derivatives and related compounds
作者:Esther del Olmo、Bianca Barboza、Louise D. Chiaradia、Alicia Moreno、Juana Carrero-Lérida、Dolores González-Pacanowska、Victoria Muñoz、José L. López-Pérez、Alberto Giménez、Agustín Benito、Antonio R. Martínez、Luis M. Ruiz-Pérez、Arturo San Feliciano
DOI:10.1016/j.ejmech.2011.08.043
日期:2011.11
electron-withdrawing or-donating substituents on different parts of the molecule, as well as those produced by the incorporation of an additional fused ring, were analyzed. Several compounds showed significant antimalarial activity in vitro with IC50 values as low as 60 nM and a certain efficacy in vivo by reducing parasitemia in Plasmodium berghei mouse models.
介绍并讨论了咪唑并[2,1 - a ]异吲哚-5-醇系列衍生物的合成及其对恶性疟原虫的评价结果。分析了吸电子或供电子取代基对分子不同部分的影响,以及通过引入额外的稠合环所产生的影响。几种化合物在体外显示出显着的抗疟活性,IC 50值低至60 nM,并且通过降低伯氏疟原虫小鼠模型中的寄生虫血症在体内具有一定的功效。
Aryl iodine-catalysed divergent synthesis of isobenzofuranones and isocoumarins <i>via</i> oxidative 1,2-aryl migration/elimination
作者:Jiaxin He、Jingran Zhang、Xuemin Li、Haofeng Shi、Yunfei Du
DOI:10.1039/d2cc03101a
日期:——
The divergent synthesis of isobenzofuranones and isocoumarins was realized from the reaction of 2-alkenyl benzoic acids and mCPBA in the presence of catalytic aryl iodine and (±)-10-camphorsulfonic acid (CSA). The organocatalytic oxidative reaction is assumed to undergo a cascade process involving lactonization, 1,2-aryl migration and elimination enabled by a modified Koser reagent generated in situ