Sulfonic acid-functionalized magnetic nanoparticles as a recyclable and eco-friendly catalyst for atom economical Michael addition reactions and bis indolyl methane synthesis
作者:Hajar Mahmoudi、Abbas Ali Jafari、Soroosh Saeedi、Habib Firouzabadi
DOI:10.1039/c4ra11605d
日期:——
Sulfonic acid-functionalized magnetic nanoparticles as a recyclable and eco-friendly catalyst for atom economical Michael addition reaction and bis indolyl methane synthesis.
磺酸功能化磁性纳米颗粒作为可回收和环保催化剂,用于原子经济的迈克尔加成反应和双吲哚甲烷合成。
Bis-indolylation of aldehydes and ketones using silica-supported FeCl<sub>3</sub>: molecular docking studies of bisindoles by targeting SARS-CoV-2 main protease binding sites
We report herein an operationally simple, efficient and versatile procedure for the synthesis of bis-indolylmethanes via the reaction of indoles with aldehydes or ketones in the presence of silica-supported ferric chloride under grindstone conditions. The prepared supported catalyst was characterized by SEM and EDX spectroscopy. The present protocol has several advantages such as shorter reaction time
我们在此报道了一种操作简单、高效且通用的方法,用于在磨石条件下,在二氧化硅负载的氯化铁存在下,通过吲哚与醛或酮的反应来合成双吲哚基甲烷。通过SEM和EDX光谱对制备的负载型催化剂进行了表征。本方案具有反应时间短、产率高、反应过程中避免使用有害有机溶剂以及对多种官能团的耐受性等优点。使用合成的双吲哚进行了针对 SARS-CoV-2 主要蛋白酶(3CL pro或 M pro )酶结合位点的分子对接研究。我们的研究表明,一些合成的化合物有可能通过疏水性和氢键相互作用与活性位点的关键氨基酸残基相互作用,从而抑制 SARS-CoV-2 M前酶。
Towards breast cancer targeting: Synthesis of tetrahydroindolocarbazoles, antibreast cancer evaluation, uPA inhibition, molecular genetic and molecular modelling studies
作者:Entesar M. Ahmed、Alaadin E. Sarhan、Dina H. El-Naggar、Reham R. Khattab、Mohamed El-Naggar、Shahenda M. El-Messery、Ghada S. Hassan、Marwa M. Mounier、Khaled Mahmoud、Neama I. Ali、Karima F. Mahrous、Mamdouh M. Ali、Mardia T. El Sayed
DOI:10.1016/j.bioorg.2019.103332
日期:2019.12
A series of some new tetrahydroindolocarbazole derivatives has been synthesized. The structure of the synthesized compounds has been confirmed by different spectroscopic techniques such as IR, NMR, elemental analysis and massspectrometry. The target compounds were evaluated for their antitumor activity against breast cancer cell line MCF-7, their GI% and their LC50 have been determined. Six of the
已经合成了一系列新的四氢吲哚并咔唑衍生物。合成的化合物的结构已通过不同的光谱技术(例如IR,NMR,元素分析和质谱法)确认。评估了目标化合物对乳腺癌细胞系MCF-7的抗肿瘤活性,确定了其GI%和LC 50。六个合成的化合物对MCF-7细胞系的GI%值超过70%,在71.9%至85.0%之间,此外化合物11的GI%值为99.9%,被认为是合成衍生物中活性最高的衍生物。化合物11 与DOX相比,u PA水平显着降低至3.5 ng / ml。化合物5,11和15显示出在MTAP和CDKN2A的表达显著减少,除了在DNA损伤彗星试验方法的显着降低。进行了分子建模研究,以解释活性配体作为uPA抑制剂的行为。
Synthesis, Anti-Methicillin-resistant S. aureus (MRSA) Evaluation, Quantitative Structure-Activity Relationship and Molecular Modeling Studies of Some Novel Bis-indoles as Prospective MRSA Pyruvate Kinase Inhibitors
作者:Mardia T. El Sayed、Nermien M. Sabry、Nehal A. Hamdy、Andrey Voronkov、Ifedayo V. Ogungbe、Konstantin Balakin、Mohamed S. Abdel-Aziz
DOI:10.2174/1570180815666171213144922
日期:2018.3.12
posed by MRSA. In this work, about 60 compounds of bis-indoles (diindolylmethanes and diindolylmethenes) were synthesized and screened as antibacterialagents against S. aureus and methicillin-resistant S. aureus (MRSA). The quantitative structure-activityrelationships (QSAR) of the compounds were also carried out in this work. Results: Good numbers of the compounds appear to be good antibiotic candidates
The novel acid-base magnetic recyclable catalyst prepared through carbon disulfide trapping process: Applied for green, one-pot, and efficient synthesis of 2,3-dihydroquinazolin-4 (1H) -ones and bis(indolyl)methanes in large-scale
Herein, a nano acid-base catalyst using magnetic core and carbamodithioic acid functional group have been synthesized and characterized. Its efficiency in the synthesis of dihydroquinazolinones and bis(indolyl)methanes derivatives was investigated. This novel metal-free catalyst exhibited significant catalytic activity in both reactions under green and mild reaction conditions (the yield obtained for