Ruthenium(II)-catalyzed synthesis of 2-arylbenzimidazole and 2-arylbenzothiazole in water
作者:Keisham S. Singh、Francis Joy、Prabha Devi
DOI:10.1007/s11243-020-00435-3
日期:2021.3
of ruthenium(II)-catalyst under nitrogen without the use of additive in water. This reaction was extended to various heteroaromatic aldehydes obtaining up to 88% yield of the desired 2-arylbenzimidazoles/2-arylbenzothiazoles. In a few cases, a small amount of diarylated compounds was formed depending on the aldehydes used. Additionally, antibiotic properties of the synthesized compounds have been screened
苯并咪唑/苯并噻唑是含有五元杂原子和苯环的杂环化合物。它们构成了众多生物活性化合物和天然产物的关键结构单元。由于含有苯并咪唑/苯并噻唑核的化合物及其衍生物具有令人感兴趣的生物活性,因此正在不断努力开发改进的合成方法来合成这些具有生物学重要性的化合物。受其生物学特性的启发,已尝试在水中使用 N^O 螯合钌 (II) 催化剂合成 2-芳基苯并咪唑和 2-芳基苯并噻唑。通过邻苯二胺或邻氨基苯硫酚与芳香醛在 5 mol% 钌 (II) 催化剂存在下在氮气下反应制备了一系列 2-芳基苯并咪唑和 2-芳基苯并噻唑,包括一些新的衍生物。在水中使用添加剂。该反应扩展到各种杂芳族醛,得到所需的 2-芳基苯并咪唑/2-芳基苯并噻唑的产率高达 88%。在少数情况下,根据所使用的醛,会形成少量二芳基化合物。此外,已使用标准圆盘扩散法筛选合成化合物的抗生素特性。该反应扩展到各种杂芳族醛,得到所需的 2-芳基苯并咪唑/2-芳基苯并噻唑的产率高达
ANTI-BACTERIAL AGENTS FROM BENZO[D]HETEROCYCLIC SCAFFOLDS FOR PREVENTION AND TREATMENT OF MULTIDRUG RESISTANT BACTERIA
申请人:Miller Marvin J.
公开号:US20110086817A1
公开(公告)日:2011-04-14
Embodiments herein provide compounds and methods of making and using such compounds for prevention and treatment of multidrug resistant bacteria. In particular, embodiments are directed to anti-bacterial agents from benzo[d]heterocyclic scaffolds for prevention and treatment of multidrug resistant bacteria.
Virtual screening identification and chemical optimization of substituted 2-arylbenzimidazoles as new non-zinc-binding MMP-2 inhibitors
作者:Antonio Laghezza、Grazia Luisi、Alessia Caradonna、Antonella Di Pizio、Luca Piemontese、Fulvio Loiodice、Mariangela Agamennone、Paolo Tortorella
DOI:10.1016/j.bmc.2019.115257
日期:2020.2
structure-activity relationship (SAR) of the benzimidazole scaffold was explored by synthesis of several analogues whose inhibition activity was tested with enzyme inhibition assays. By performing the molecular simplification approach, we disclosed different sets of single-digit micromolar inhibitors of MMP-2, with up to a ten-fold increase in inhibitory activity and ameliorated selectivity towards off-target
Mukaiyama reagent: An efficient reaction mediator for rapid synthesis of 1,2-disubstituted-1H-benzo[d]imidazoles
作者:Graziella Tocco、Antonio Laus、Pierluigi Caboni
DOI:10.1016/j.tetlet.2022.154045
日期:2022.8
chemistry, 1,2-disubstituted benzimidazoles represent a privileged class of nitrogen-based heterocycles but, unlike 2-substitued derivatives, few synthetic methods have been reported. In this context, we developed a rapid, metal-free, and straightforward method to prepare a series of 1,2-disubstituted-1H-benzo[d]imidazoles starting from 1,2-phenylendiamines and various aromatic and aliphatic aldehydes in the
在药物化学领域,1,2-二取代苯并咪唑代表了一类特殊的氮基杂环化合物,但与 2-取代衍生物不同,很少有合成方法的报道。在此背景下,我们开发了一种快速、无金属且直接的方法,以1,2-苯二胺和各种芳香族和脂肪族醛为原料制备一系列 1,2-二取代-1 H-苯并[ d ]咪唑。向山试剂的存在。反应在室温下在几分钟内进行,产物收率良好。
Process for preparing nitrofurylbenzimidazoles and pharmaceutical compositions having antimycotic, antibacterial and antitubercular activities containing same
Nitrofurylbenzimidazoles having general formula (I)
wherein R is hydrogen; * straight or branched C1-C12 alkyl; halogen; nitro group; or halogen-substituted C1-C4 lower alkyl are obtained with high yields by condensing an o-phenylendiamine having general formula (II)
wherein R has the above-identified meaning, with 5-nitro-2- furaldehyde in the presence of a ferricyanide of the alkaline or alkaline-earth metals.
Nitrofurylbenzimidazoles (I) are endowed with potent antimycotic, antibacterial and antitubercular activities and are suitable for being compounded into pharmaceutical compositions administrable via the systemic route.
具有通式(I)(其中 R 为氢;* 直链或支链 C1-C12 烷基;卤素;硝基;或卤素取代的 C1-C4 低级烷基)的硝基苯并咪唑,是在碱金属或碱土金属的三氯化铁存在下,通过将具有通式(II)(其中 R 具有上述含义)的邻苯基苯二胺与 5-硝基-2-呋喃甲醛缩合而得到的,产量很高。 硝基苯并咪唑(I)具有很强的抗霉菌、抗菌和抗结核活性,适合复配成可通过全身途径给药的药物组合物。