46804-13-1Relevant academic research and scientific papers
Anticancer activities of manganese-based photoactivatable CO-releasing complexes (PhotoCORMs) with benzimidazole derivative ligands
üstün, Elvan,?zgür, Aykut,Co?kun, Kübra A.,Demir Dü?ünceli, Serpil,?zdemir, ?smail,Tutar, Yusuf
, p. 331 - 337 (2017)
Carbon monoxide is an important signaling molecule which is produced by heme oxygenase-1. CO shows antiproliferative activity against cancer cells; hence, activation of HO-1 is a significant inhibition strategy against tumor formation and survival of cancer cells. In this work, manganese-based CO-releasing molecules (CORMs) were designed and synthesized to inhibit breast cancer cell proliferation. Human invasive ductal breast cancer cells (MCF-7) were treated with the synthesized CORMs to investigate the effect of the complexes on breast cancer survival under UV light. In vitro experiments indicated that the complexes inhibited breast cancer cell proliferation, and further, the antiproliferative effects were increased under UV light. Thus, these novel CORMs may provide a drug template for the treatment of invasive ductal breast cancer.
Antiproliferative activities of 2-hydroxyethyl substituted benzimidazolium salts and their palladium complexes against human cancerous cell lines
Akko?, Senem
, p. 2903 - 2914 (2019)
Benzimidazolium salts (1a and 1b) and respective palladium complexes (2a and 2b) were prepared and characterized with 1H and 13C NMR, IR, elemental analysis as well as HRMS (for 2a). All target compounds were screened as potential an
Convenient synthesis of N-1-alkyl benzimidazoles via Pd catalyzed C–N bond formation and cyclization
Bie, Fusheng,Yao, Yongfeng,Cao, Han,Shi, Yijun,Yan, Peng,Ma, Jie,Han, Ying,Liu, Xuejing
, p. 2387 - 2396 (2021/06/25)
N-1-Alkyl-2-unsubstituted benzimidazoles were directly synthesized by intermolecular coupling of formimidamides with benzylamines; the syntheses were catalyzed by Pd(OAc)2 in one pot, giving rise to moderate to good yields. Aromatic formamidine
The catalytic activity of new iridium(I) N-heterocyclic carbene complexes for hydrogen transfer reaction of ketones
Karaca, Emine ?zge
, p. 287 - 293 (2021/02/09)
In this paper, the reaction of [Ir(COD)Cl]2 with in situ prepared Ag–N-heterocyclic carbene (NHC) complexes yields a series of [IrCl(COD)(NHC)] complexes. All compounds were fully characterized by 1H NMR, 13C NMR, and FT–IR spectroscopy. The manuscript focused on the preparation of new Ir–NHC complexes, characterization and catalytic behavior. A series of hydrogenation transfer reactions were performed to reveal the effects of the Ir–NHC complexes. The new Ir–NHC complexes of benzimidazole-2-ylidene are effective catalysts for the transfer of hydrogenation of different ketones, using i-PrOH as the source of hydrogen in the presence of KOH. The reactions were conducted at a substrate/catalyst/base (S/C/base) molar ratio of 1:0.001:2. Although all of the complexes are active catalysts for the transfer hydrogenation of ketones, moderate yields were obtained with acetylnaphthalene and conversion was not observed with very substituted ketones such as 2′,3′,4′,5′,6′-pentamethylacetophenone. It was observed that for transfer hydrogenation reactions Ir–NHC catalysts were more active, compared to Ru–NHC catalyzed studies performed by our team. Graphic abstract: [Figure not available: see fulltext.].
NHC-Pd complex heterogenized on graphene oxide for cross-coupling reactions and supercapacitor applications
Kandathil, Vishal,Siddiqa, Aisha,Patra, Abhinandan,Kulkarni, Bhakti,Kempasiddaiah, Manjunatha,Sasidhar,Patil, Shivaputra A.,Rout, Chandra Sekhar,Patil, Siddappa A.
, (2020/07/25)
N-heterocyclic carbene (NHC)-palladium(II) complex (GO@NHC-Pd) was synthesized on graphene oxide (GO) support via a simple and cost-effective multistep approach. The spectroscopic, microscopic, thermal, and surface analyses of GO@NHC-Pd confirmed the successful formation of the catalyst. The investigation of catalytic activity showed that GO@NHC-Pd was very effective in Suzuki–Miyaura as well as Hiyama cross-coupling. Being heterogeneous in nature, GO@NHC-Pd was recovered after each reaction cycle easily and reused for up to nine and six cycles in Suzuki–Miyaura and Hiyama cross-coupling, respectively, without significant loss of activity. Further exploration of the supercapacitor performance of GO@NHC-Pd catalyst assembled in a two-electrode cell configuration shown a maximum attained capacitance of 105.26 F/g at a current density of 0.1 A/g with good cycling stability of 96.89% over 2,500 cycles.
Benzimidazolium salts prevent and disrupt methicillin-resistant: Staphylococcus aureus biofilms
Schmitzer, Andreea R.,Tessier, Jérémie
, p. 9420 - 9430 (2020/03/19)
Emergence of resistant bacteria encourages us to develop new antibiotics and strategies to compensate for the different mechanisms of resistance they acquire. One of the defense mechanisms of resistant bacteria is the formation of biofilms. Herein we show
meta-Cyanobenzyl substituted benzimidazolium salts: Synthesis, characterization, crystal structure and carbonic anhydrase, α-glycosidase, butyrylcholinesterase, and acetylcholinesterase inhibitory properties
Türker, Ferhat,Barut Celepci, Duygu,Akta?, Ayd?n,Taslimi, Parham,G?k, Yetkin,Aygün, Muhittin,Gül?in, ?lhami
, (2018/05/30)
meta-Cyanobenzyl-substituted N-heterocyclic carbene (NHC) precursors were synthesized by the reaction of a series of N-(alkyl)benzimidazolium with 3-bromomethyl-benzonitrile. These benzimidazolium salts were characterized by using 1H NMR, 13C NMR, FTIR spectroscopy, and elemental analysis techniques. The molecular and crystal structures of 2f and 2g complexes were obtained by using the single-crystal X-ray diffraction method. The derivatives of these novel NHC precursors were effective inhibitors of α-glycosidase (AG), the cytosolic carbonic anhydrase I and II isoforms (hCA I and II), butyrylcholinesterase (BChE), and acetylcholinesterase (AChE) with Ki values in the range of 1.01–2.12 nM for AG, 189.56–402.44 nM for hCA I, 112.50–277.37 nM for hCA II, 95.45–352.58 nM for AChE, and 132.91–571.18 nM for BChE. In the last years, inhibition of the CA enzyme has been considered as a promising factor for pharmacologic intervention in a diversity of disturbances such as obesity, glaucoma, cancer, and epilepsy.
Synthesis, characterization and the Suzuki-Miyaura coupling reactions of N-heterocyclic carbene-Pd(II)-pyridine (PEPPSI) complexes
Ya?ar, Sedat,?ahin, ?a?lar,Arslan, Murat,Ozdemir, Ismail
, p. 107 - 112 (2015/02/19)
N-heterocyclic carbenes (NHCs) are a significant and powerful class of ligands for transition metals. A new series of air and moisture-stable NHC-PdCl2-pyridine complexes, (2a-f), have been described. With the development of a more efficient ca
Synthesis, characterization and tyrosinase inhibitory properties of benzimidazole derivatives
Karatas, Mert Olgun,Alici, Bulent,Cetinkaya, Engin,Bilen, Cigdem,Gencer, Nahit,Arslan, Oktay
, p. 461 - 466 (2014/08/18)
1-Alkylbenzimidazole and 1,3-dialkyl benzimidazolium salts were synthesized and characterized by the data of IR, 1H NMR, 13C NMR spectra and elemental analyses. These compounds were investigated as tyrosinase inhibitors. Tyrosinase h
