Redox-Neutral Photocatalytic Radical Cascade Cyclization for the Synthesis of CH2CN/CF2COOEt/CF3-Containing Benzo[4,5]imidazo[2,1-a]isoquinolin-6(5H)-One Derivatives
摘要:
A novel method for the synthesis of benzo[4,5]imidazo[2,1-a]isoquinolin derivatives via visible-light-induced radical cascade cyclization is described. By using N-methacryloyl-2-phenylbenzoimidazoles and diverse radical precursors, various benzo[4,5]imidazo[2,1-a]isoquinolin derivatives containing CH2CN/CF2COOEt/CF3 can be formed in good to excellent yields under mild reaction conditions. This method exhibits good functional group tolerance and a wide range of substrate scope.
An efficient aqueous phase synthesis of benzimidazoles/benzothiazoles in the presence of β-cyclodextrin
作者:Ramesh Katla、Rakhi Chowrasia、Padma Sunitha Manjari、Nelson Luís C. Domingues
DOI:10.1039/c4ra16222f
日期:——
Benzimidazoles/benzothiazoles were synthesized in water under neutral conditions by the reaction of aromatic aldehydes, o-phenylenediamine/2-amino thiophenol mediated by β-cyclodextrin in high yields.
Synthesis of benzimidazoles/benzothiazoles by using recyclable, magnetically separable nano-Fe2O3 in aqueous medium
作者:Dileep Kommula、Sri Rama Murty Madugula
DOI:10.1007/s13738-017-1107-z
日期:2017.8
An efficient, simple, ecofriendly and cost-effective method has been developed for the synthesis of benzimidazole/benzothiazole derivatives by a two-component reaction, involving 1,2-diamino benzene/2-amino thiophenol and substituted aromatic aldehydes using recyclable nano-Fe2O3 catalyst (10 mol%) in water afforded with excellent yields (75–85%). The most important feature of this protocol is short reaction times, high yields, aqueous reaction medium, efficient recycling and high stability of the catalyst.
Pharmacological and Toxicological Screening of Novel Benzimidazole-Morpholine Derivatives as Dual-Acting Inhibitors
作者:Nafiz Can、Ulviye Acar Çevik、Begüm Nurpelin Sağlık、Yusuf Özkay、Özlem Atlı、Merve Baysal、Ümide Demir Özkay、Özgür Devrim Can
DOI:10.3390/molecules22081374
日期:——
(MAO-B), cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzyme inhibitory, and antimicrobial activities of a new series of 2-(4-substituted phenyl)-1-[2-(morpholin-4-yl)ethyl]-1H-benzimidazole derivatives, for their possible use as multi-action therapeutic agents. Target compounds (n = 15) were synthesized under microwave irradiation conditions in two steps, and their structures were elucidated
Investigating the Antidepressant-like Effects of some Benzimidazolepiperidine Derivatives by In-Vivo Experimental Methods
作者:Nazlı Turan、Ümide Demir Özkay、Nafiz Öncü Can、Özgür Devrim Can
DOI:10.2174/1570180815666181004103112
日期:2019.1.15
activities of the test compounds. Moreover, locomotor activity performances of the animals were evaluated by an activity cage device. Results: In the TST and MFST, compounds 2c-2h (10 mg/kg) and the reference drug fluoxetine (20 mg/kg) significantly reduced the immobility time of mice indicating the antidepressant-like activities of these compounds. Further, in MFST, the same compounds induced significant
Benzimidazole derivatives 1-24 have been synthesized and their in vitro β-glucuronidase inhibitory activitiy was evaluated. Compounds 15 (IC50 = 6.33 ± 0.40 µM), 7 (IC50 = 22.0 ± 0.33 µM), 2 (IC50 = 23.1 ± 1.78 µM), 17 (IC50 = 23.9 ± 1.46 µM), and 3 (IC50 = 33.8 ± 1.61 µM) showed more potent β-glucuronidase inhibitory activity than the standard (D-saccharic acid 1,4 lactone, IC50 = 48.4 ± 1.25 µM). This study has identified a new series of potential β-glucuronidase inhibitors. A structure-activity relationship has also been studied.