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Isbel SR, Patil SA, Bugarin A. NHCs silver complexes as potential antimicrobial agents. Inorganica Chim Acta 2024; 563:121899. [PMID: 38292701 PMCID: PMC10824532 DOI: 10.1016/j.ica.2023.121899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
NHCs (N-heterocyclic carbenes) are generally used as organic ligands that can coordinate with metal ions like silver to form stable complexes. These complexes have shown enhanced antimicrobial properties compared to silver alone. This document provides an overview of the reported NHC-based silver derivatives (acetates, chlorides, bromides, and iodides) who possess antimicrobial activity. This review covers articles published between the first report (2006) and 2023.
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Affiliation(s)
- Stephen R. Isbel
- Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, FL 33965, USA
| | - Siddappa A. Patil
- Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, FL 33965, USA
- Centre for Nano & Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India
| | - Alejandro Bugarin
- Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, FL 33965, USA
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Bollikanda RK, Nagineni D, Pranathi AN, Chirra N, Misra S, Kantevari S. Dihydrobenzothiazole coupled N-piperazinyl acetamides as antimicrobial agents: Design, synthesis, biological evaluation and molecular docking studies. Arch Pharm (Weinheim) 2024; 357:e2300450. [PMID: 38036302 DOI: 10.1002/ardp.202300450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/30/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023]
Abstract
Substituted saturated N-heterocycles have gained momentum as effective scaffolds for the development of new drugs. In this study, we coupled partly saturated benzothiazoles with substituted piperazines and evaluated their antimicrobial activity. Following a three-step reaction sequence from commercially available cyclic 1,3-diones, a series of novel 2-[4-substituted-1-piperazinyl]-N-(7-oxo-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)acetamides (7a-af) were synthesised. 2-Amino-5,6-dihydro-benzo[d]thiazol-7(4H)-ones, obtained through the condensation of cyclohexane-1,3-diones with thiourea, were acetylated with chloroacetic chloride and then reacted with N-substituted piperazines 6a-p to give the desired products 7a-af in excellent yields. All 32 new compounds were fully characterised by their 1 H-nuclear magnetic resonance (NMR), 13 C-NMR and high-resolution mass spectrometry spectra. The synthetic compounds 7a-af were tested in vitro for their efficacy as antimicrobials against pathogenic strains of Gram-positive and Gram-negative bacteria, Streptococcus mutans and Salmonella typhi, respectively, as well as against fungal strains, including Candida albicans 3018 and C. albicans 4748. Ciprofloxacin and fluconazole served as the reference drugs. While compounds 7c and 7l showed inhibition against fungal strains with zones of inhibition of 11 and 1 mm, respectively, four analogues (7d, 7l, 7n, and 7r) demonstrated strong antibacterial action (zone of inhibition in the range of 10-15 mm). Three compounds (7j, 7l, and 7w) also exhibited moderate antitubercular activity (MIC: 6.25 µg/mL) against Mycobacterium tuberculosis H37Rv. Molecular docking investigations and the predicted physicochemical and ADMET (absorption, distribution, metabolism, excretion, and toxicity) properties for the potent compounds made this scaffold useful as a pharmacologically active framework for the development of potential antimicrobial hits.
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Affiliation(s)
- Rakesh K Bollikanda
- Fluoro & Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Devendra Nagineni
- Fluoro & Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Abburi Naga Pranathi
- Fluoro & Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Nagaraju Chirra
- Fluoro & Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sunil Misra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Srinivas Kantevari
- Fluoro & Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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Ronga L, Varcamonti M, Tesauro D. Structure-Activity Relationships in NHC-Silver Complexes as Antimicrobial Agents. Molecules 2023; 28:molecules28114435. [PMID: 37298911 DOI: 10.3390/molecules28114435] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Silver has a long history of antimicrobial activity and received an increasing interest in last decades owing to the rise in antimicrobial resistance. The major drawback is the limited duration of its antimicrobial activity. The broad-spectrum silver containing antimicrobial agents are well represented by N-heterocyclic carbenes (NHCs) silver complexes. Due to their stability, this class of complexes can release the active Ag+ cations in prolonged time. Moreover, the properties of NHC can be tuned introducing alkyl moieties on N-heterocycle to provide a range of versatile structures with different stability and lipophilicity. This review presents designed Ag complexes and their biological activity against Gram-positive, Gram-negative bacteria and fungal strains. In particular, the structure-activity relationships underlining the major requirements to increase the capability to induce microorganism death are highlighted here. Moreover, some examples of encapsulation of silver-NHC complexes in polymer-based supramolecular aggregates are reported. The targeted delivery of silver complexes to the infected sites will be the most promising goal for the future.
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Affiliation(s)
- Luisa Ronga
- Institut des Sciences Analytiques et de Physico-Chimie Pour l'Environnement et les Matériaux, Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, 64053 Pau, France
| | - Mario Varcamonti
- Department of Biology, University of Naples "Federico II", Via Cynthia, 80143 Naples, Italy
| | - Diego Tesauro
- Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Montesano, 49, 80131 Naples, Italy
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Li SR, Tan YM, Zhang L, Zhou CH. Comprehensive Insights into Medicinal Research on Imidazole-Based Supramolecular Complexes. Pharmaceutics 2023; 15:1348. [PMID: 37242590 PMCID: PMC10222694 DOI: 10.3390/pharmaceutics15051348] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
The electron-rich five-membered aromatic aza-heterocyclic imidazole, which contains two nitrogen atoms, is an important functional fragment widely present in a large number of biomolecules and medicinal drugs; its unique structure is beneficial to easily bind with various inorganic or organic ions and molecules through noncovalent interactions to form a variety of supramolecular complexes with broad medicinal potential, which is being paid an increasing amount of attention regarding more and more contributions to imidazole-based supramolecular complexes for possible medicinal application. This work gives systematical and comprehensive insights into medicinal research on imidazole-based supramolecular complexes, including anticancer, antibacterial, antifungal, antiparasitic, antidiabetic, antihypertensive, and anti-inflammatory aspects as well as ion receptors, imaging agents, and pathologic probes. The new trend of the foreseeable research in the near future toward imidazole-based supramolecular medicinal chemistry is also prospected. It is hoped that this work provides beneficial help for the rational design of imidazole-based drug molecules and supramolecular medicinal agents and more effective diagnostic agents and pathological probes.
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Affiliation(s)
- Shu-Rui Li
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yi-Min Tan
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Ling Zhang
- School of Chemical Technology, Shijiazhuang University, Shijiazhuang 050035, China
| | - Cheng-He Zhou
- Institute of Bioorganic & Medicinal Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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Coumarin Triazoles as Potential Antimicrobial Agents. Antibiotics (Basel) 2023; 12:antibiotics12010160. [PMID: 36671361 PMCID: PMC9855047 DOI: 10.3390/antibiotics12010160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
Currently, in hospitals and community health centers, microbial infections are highly common diseases and are a leading cause of death worldwide. Antibiotics are generally used to fight microbial infections; however, because of the abuse of antibiotics, microbes have become increasingly more resistant to most of them. Therefore, medicinal chemists are constantly searching for new or improved alternatives to combat microbial infections. Coumarin triazole derivatives displayed a variety of therapeutic applications, such as antimicrobial, antioxidant, and anticancer activities. This review summarizes the advances of coumarin triazole derivatives as potential antimicrobial agents covering articles published from 2006 to 2022.
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Piatek M, O'Beirne C, Beato Z, Tacke M, Kavanagh K. Exposure of Candida parapsilosis to the silver(I) compound SBC3 induces alterations in the proteome and reduced virulence. Metallomics 2022; 14:6617997. [PMID: 35751649 PMCID: PMC9348618 DOI: 10.1093/mtomcs/mfac046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/23/2022] [Indexed: 11/14/2022]
Abstract
The antimicrobial properties of silver have been exploited for many centuries and continue to gain interest in the fight against antimicrobial drug resistance. The broad-spectrum activity and low toxicity of silver have led to its incorporation into a wide range of novel antimicrobial agents, including N-heterocyclic carbene (NHC) complexes. The antimicrobial activity and in vivo efficacy of the NHC silver(I) acetate complex SBC3, derived from 1,3-dibenzyl-4,5-diphenylimidazol-2-ylidene (NHC*), have previously been demonstrated, although the mode(s) of action of SBC3 remains to be fully elucidated. Label-free quantitative proteomics was applied to analyse changes in protein abundance in the pathogenic yeast Candida parapsilosis in response to SBC3 treatment. An increased abundance of proteins associated with detoxification and drug efflux were indicative of a cell stress response, whilst significant decreases in proteins required for protein and amino acid biosynthesis offer potential insight into the growth-inhibitory mechanisms of SBC3. Guided by the proteomic findings and the prolific biofilm and adherence capabilities of C. parapsilosis, our studies have shown the potential of SBC3 in reducing adherence to epithelial cells and biofilm formation and hence decrease fungal virulence.
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Affiliation(s)
- Magdalena Piatek
- SSPC Pharma Research Centre, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
| | - Cillian O'Beirne
- School of School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Ireland
| | - Zoe Beato
- School of School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Ireland
| | - Matthias Tacke
- School of School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Ireland
| | - Kevin Kavanagh
- SSPC Pharma Research Centre, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
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Carpio-Granillo M, Zuno-Cruz FJ, Sánchez-Cabrera G, Rojo-Gómez EG, González-Ábrego DO, Coronel-Olivares C, Caviedes MF, Andrade-López N, Rosales-Hoz MJ, Leyva MA. p–nitrobenzyl-substituted N–heterocyclic carbene in Silver(I) and Gold(I) complexes and their antibacterial activities. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cao XY, Pang CM, Xiao Y, Xiao WQ, Luo SH, He JP, Wang ZY. Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection. Polymers (Basel) 2021; 13:polym13183091. [PMID: 34577993 PMCID: PMC8472194 DOI: 10.3390/polym13183091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/06/2021] [Accepted: 09/10/2021] [Indexed: 01/19/2023] Open
Abstract
A new type of conjugated polybenzimidazole (CPBI) was synthesized through a simple polycondensation reaction without metal catalysis, and N-alkylation modification was carried out to solve the problems of solubility and fluorescence properties. A series of nano-microsphere polymers CPBIn with large conjugation, good solubility, and strong fluorescence has been successfully used as “turn-off” fluorescent probes for the first time. The results show that, under suitable N-alkylation conditions, the obtained CPBIn can be used as a highly sensitive and selective fluorescent probe for the detection of Cu2+ and Zn2+ at the same time, and their detection limits are both nM levels. In addition, CPBI2 can be designed as an ultra-sensitive IMPLICATION logic gate at the molecular level, cyclically detecting Cu2+. With the test paper containing CPBI2, easy and quick on-site detection can be achieved. This research provides a new idea for the brief synthesis of multifunctional materials.
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Affiliation(s)
- Xi-Ying Cao
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
| | - Chu-Ming Pang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
- School of Health Medicine, Guangzhou Huashang College, Guangzhou 511300, China
- Correspondence: (C.-M.P.); (S.-H.L.); (Z.-Y.W)
| | - Ying Xiao
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
| | - Wan-Qing Xiao
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
| | - Shi-He Luo
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
- Correspondence: (C.-M.P.); (S.-H.L.); (Z.-Y.W)
| | - Jin-Ping He
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
| | - Zhao-Yang Wang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, China; (X.-Y.C.); (Y.X.); (W.-Q.X.); (J.-P.H.)
- Correspondence: (C.-M.P.); (S.-H.L.); (Z.-Y.W)
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Nayak S, Gaonkar SL. Coinage Metal N-Heterocyclic Carbene Complexes: Recent Synthetic Strategies and Medicinal Applications. ChemMedChem 2021; 16:1360-1390. [PMID: 33277791 DOI: 10.1002/cmdc.202000836] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Indexed: 12/15/2022]
Abstract
New weapons are constantly needed in the fight against cancer. The discovery of cisplatin as an anticancer drug prompted the search for new metal complexes. The successful history of cisplatin motivated chemists to develop a plethora of metal-based molecules. Among them, metal-N-heterocyclic carbene (NHC) complexes have gained significant attention because of their suitable qualities for efficient drug design. The enhanced applications of coinage metal-NHC complexes have encouraged a gradually increasing number of studies in the fields of medicinal chemistry that benefit from the fascinating chemical properties of these complexes. This review aims to present recent developments in synthetic strategies and medicinal applications of copper, silver and gold complexes supported by NHC ligands.
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Affiliation(s)
- Swarnagowri Nayak
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Santosh L Gaonkar
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
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Patil M, Noonikara-Poyil A, Joshi SD, Patil SA, Patil SA, Lewis AM, Bugarin A. Synthesis, molecular docking studies, and in vitro antimicrobial evaluation of piperazine and triazolo-pyrazine derivatives. Mol Divers 2021; 26:827-841. [PMID: 33547619 DOI: 10.1007/s11030-021-10190-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/21/2021] [Indexed: 11/28/2022]
Abstract
For this work, two series of new piperazine derivatives (3a-o) and triazolo-pyrazine derivatives (3p-t) were synthesized in a single-step reaction. All twenty adducts were obtained in good to high yields and fully characterized by 1H NMR, 13C NMR, IR, and mass spectrometry techniques. To further confirm the chemical identity of the adducts, a crystal of N-{[(4-chlorophenyl)-3-(trifluoromethyl)]-5,6-dihydro-[1,2,4]triazolo[4,3-a]}pyrazine-7(8H)-carboxamide (3t) was prepared and analyzed using X-ray crystallography. In vitro screening of the antimicrobial activity of all compounds (3a-t) was evaluated against five bacterial and two fungal strains. This study disclosed that N-{[(3-chlorophenyl)]-4-(dibenzo[b,f][1,4]thiazepin-11-yl)}piperazine-1-carboxamide (3o) was the superior antimicrobial with good growth inhibition against A. baumannii. Furthermore, the results from the performed molecular docking studies were promising, since the observed data could be used to develop more potent antimicrobials.
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Affiliation(s)
- Mahadev Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, 562112, Karnataka, India
| | - Anurag Noonikara-Poyil
- Department of Chemistry and Biochemistry, University of Texas At Arlington, Arlington, TX, 76019, USA
| | - Shrinivas D Joshi
- Novel Drug Design and Discovery Laboratory, Department of Pharmaceutical Chemistry, S. E. T's College of Pharmacy, Sangolly Rayanna Nagar, Dharwad, 580 002, Karnataka, India
| | - Shivaputra A Patil
- Pharmaceutical Sciences Department, College of Pharmacy, Rosalind Franklin University of Medicine and Science, 3333 Green Bay Road, North Chicago, IL, 60064, USA
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, 562112, Karnataka, India.
| | - Abby M Lewis
- Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, FL, 33965, USA
| | - Alejandro Bugarin
- Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, FL, 33965, USA.
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Synthesis, structural diversity, and applications of mesoionic 1,2,3-triazol-5-ylidene metal complexes, an update (2017–2020). Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114935] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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O'Beirne C, Piatek ME, Fossen J, Müller-Bunz H, Andes DR, Kavanagh K, Patil SA, Baumann M, Tacke M. Continuous flow synthesis and antimicrobial evaluation of NHC* silver carboxylate derivatives of SBC3 in vitro and in vivo. Metallomics 2020; 13:6055688. [PMID: 33595656 DOI: 10.1093/mtomcs/mfaa011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/24/2020] [Indexed: 11/14/2022]
Abstract
N-heterocyclic silver carbene compounds have been extensively studied and shown to be active agents against a host of pathogenic bacteria and fungi. By incorporating hypothesized virulence targeting substituents into NHC-silver systems via salt metathesis, an atom-efficient complexation process can be used to develop new complexes to target the passive and active systems of a microbial cell. The incorporation of fatty acids and an FtsZ inhibitor have been achieved, and creation of both the intermediate salt and subsequent silver complex has been streamlined into a continuous flow process. Biological evaluation was conducted with in vitro toxicology assays showing these novel complexes had excellent inhibition against Gram-negative strains E. coli, P. aeruginosa, and K. pneumoniae; further studies also confirmed the ability to inhibit biofilm formation in methicillin-resistant Staphylococcus aureus (MRSA) and C. Parapsilosis. In vivo testing using a murine thigh infection model showed promising inhibition of MRSA for the lead compound SBC3, which is derived from 1,3-dibenzyl-4,5-diphenylimidazol-2-ylidene (NHC*).
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Affiliation(s)
- Cillian O'Beirne
- School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Republic of Ireland
| | - Magdalena E Piatek
- SSPC Pharma Research Centre, Department of Biology, Maynooth University, Maynooth, W23F2H6 Co. Kildare, Republic of Ireland
| | - Jen Fossen
- Department of Medicine, University of Wisconsin, 600 Highland Avenue, Madison, WI, USA
| | - Helge Müller-Bunz
- School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Republic of Ireland
| | - David R Andes
- Department of Medicine, University of Wisconsin, 600 Highland Avenue, Madison, WI, USA
| | - Kevin Kavanagh
- SSPC Pharma Research Centre, Department of Biology, Maynooth University, Maynooth, W23F2H6 Co. Kildare, Republic of Ireland
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Bangalore, Karnataka, India
| | - Marcus Baumann
- School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Republic of Ireland
| | - Matthias Tacke
- School of Chemistry, University College Dublin, Belfield, Stillorgan, Dublin 4, Republic of Ireland
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N-heterocyclic carbene-metal complexes as bio-organometallic antimicrobial and anticancer drugs, an update (2015–2020). Future Med Chem 2020; 12:2239-2275. [DOI: 10.4155/fmc-2020-0175] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
N-heterocyclic carbenes (NHCs) are organic compounds that typically mimic the chemical properties of phosphines. NHCs have made a significant impact on the field of coordination and organometallic chemistry because they are easy to prepare and handle and because of their versatility and stability. Importantly, the physicochemical properties of NHCs can be easily fine-tuned by simple variation of substituents on the nitrogen atoms. Over the past few years, various NHC–metal complexes have been extensively used as metal-based drug candidates and catalysts (homogeneous or heterogeneous) for various applications. To help assist future work with these compounds, this review provides a thorough review on the latest information involving some biomedical applications of NHC–metal complexes. Specifically, this article focuses on recent advances in the design, synthesis, characterization and biomedical applications (e.g., antimicrobial and anticancer activity) of various NHC–metal complexes (metal: silver, gold, palladium, rhodium, ruthenium, iridium and platinum) covering work published from 2015 to 2020. It is hoped that the promising discoveries to date will help accelerate studies on the encouraging potential of NHC–metal complexes as a class of effective therapeutic agents.
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14
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Mohamed Haziz UF, Haque RA, Al-Ashraf Abdullah A, Razali MR. Mononuclear silver(I)- N-heterocyclic carbene complexes with benzimidazole-2-ylidene ligands: synthesis, crystal structure analyses and comparative antibacterial studies. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1830381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Rosenani A. Haque
- School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
| | - Amirul Al-Ashraf Abdullah
- School of Biological Sciences, Universiti Sains Malaysia, Penang, Malaysia
- Centre for Chemical Biology, Universiti Sains Malaysia, Penang, Malaysia
| | - Mohd R. Razali
- School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
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15
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Sharhan O, Heidelberg T, Hashim NM, Al-Madhagi WM, Ali HM. Benzimidazolium-acridine-based silver N-heterocyclic carbene complexes as potential anti-bacterial and anti-cancer drug. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119462] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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16
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Ameri RE, Mohtat B, Alipour E, Mirza B. An Isocyanide Based Three-component Reaction under Catalyst-free Conditions for Synthesis of New and Stable Trifluoromethylated Ketenimines and 1-Azabutadienes. ORG PREP PROCED INT 2019. [DOI: 10.1080/00304948.2019.1694842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Rosa Edris Ameri
- Department of Chemistry, Islamic Azad University, North Tehran Branch, Tehran, Iran
| | - Bita Mohtat
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Eskandar Alipour
- Department of Chemistry, Islamic Azad University, North Tehran Branch, Tehran, Iran
| | - Behrooz Mirza
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
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Seva L, Junaid QM, Advaya GR, Sabiah S. Palladium NHC complexes with benzimidazolium biphenyl ligands: Synthesis, structure, spectral characterization and their application in Suzuki-Miyaura reactions. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.121000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Design, synthesis, and molecular docking study of new piperazine derivative as potential antimicrobial agents. Bioorg Chem 2019; 92:103217. [DOI: 10.1016/j.bioorg.2019.103217] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 11/17/2022]
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19
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Patil M, Noonikara-Poyil A, Joshi SD, Patil SA, Patil SA, Bugarin A. New Urea Derivatives as Potential Antimicrobial Agents: Synthesis, Biological Evaluation, and Molecular Docking Studies. Antibiotics (Basel) 2019; 8:antibiotics8040178. [PMID: 31600950 PMCID: PMC6963781 DOI: 10.3390/antibiotics8040178] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/01/2019] [Accepted: 10/05/2019] [Indexed: 12/29/2022] Open
Abstract
A series of new urea derivatives, containing aryl moieties as potential antimicrobial agents, were designed, synthesized, and characterized by 1H NMR, 13C NMR, FT-IR, and LCMS spectral techniques. All newly synthesized compounds were screened in vitro against five bacterial strains (Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Staphylococcus aureus) and two fungal strains (Candida albicans and Cryptococcus neoformans). Variable levels of interaction were observed for these urea derivatives. However, and of major importance, many of these molecules exhibited promising growth inhibition against Acinetobacter baumannii. In particular, to our delight, the adamantyl urea adduct 3l demonstrated outstanding growth inhibition (94.5%) towards Acinetobacter baumannii. In light of this discovery, molecular docking studies were performed in order to elucidate the binding interaction mechanisms of the most active compounds, as reported herein.
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Affiliation(s)
- Mahadev Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India.
| | - Anurag Noonikara-Poyil
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA.
| | - Shrinivas D Joshi
- Department of Pharmaceutical Chemistry, S. E. T's College of Pharmacy, Sangolli Rayanna Nagar, Dharwad 580 002, Karnataka, India.
| | - Shivaputra A Patil
- Pharmaceutical Sciences Department, College of Pharmacy, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA.
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India.
| | - Alejandro Bugarin
- Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, FL 33965, USA.
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20
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Haziz UF, Haque RA, Amirul A, Aidda O, Razali MR. New class of non-symmetrical homo-dibenzimidazolium salts and their dinuclear Silver(I) di-NHC complexes. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Favarin LR, Oliveira L, Silva H, Micheletti A, Pizzuti L, Machulek-Júnior A, Caires AR, Back DF, Lima S, Andrade L, Duarte L, Pinto L, Antônio Casagrande G. Sonochemical synthesis of highly luminescent silver complexes: Photophysical properties and preliminary in vitro antitumor and antibacterial assays. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Shahini C, Achar G, Budagumpi S, Müller–Bunz H, Tacke M, Patil SA. Benzoxazole and dioxolane substituted benzimidazole–based N–heterocyclic carbene–silver(I) complexes: Synthesis, structural characterization and in vitro antimicrobial activity. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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23
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Streciwilk W, Terenzi A, Lo Nardo F, Prochnow P, Bandow JE, Keppler BK, Ott I. Synthesis and Biological Evaluation of Organometallic Complexes Bearing Bis-1,8-naphthalimide Ligands. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800384] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Wojciech Streciwilk
- Institute of Medicinal and Pharmaceutical Chemistry; Technische Universität Braunschweig; Beethoven Straße 55 38106 Braunschweig Germany
| | - Alessio Terenzi
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Straße 42 1090 Vienna Austria
| | - Federico Lo Nardo
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Straße 42 1090 Vienna Austria
| | - Pascal Prochnow
- Applied Microbiology; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Julia Elisabeth Bandow
- Applied Microbiology; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Straße 42 1090 Vienna Austria
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry; Technische Universität Braunschweig; Beethoven Straße 55 38106 Braunschweig Germany
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24
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Achar G, Shahini CR, Patil SA, Małecki JG, Pan SH, Lan A, Chen XR, Budagumpi S. Sterically modulated silver(I) complexes of coumarin substituted benzimidazol-2-ylidenes: Synthesis, crystal structures and evaluation of their antimicrobial and antilung cancer potentials. J Inorg Biochem 2018. [PMID: 29529471 DOI: 10.1016/j.jinorgbio.2018.02.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this contribution, a series of sterically-encumbered coumarin substituted benzimidazole-based N-heterocyclic carbene (NHC) precursors (1-12) and their silver(I)-NHC complexes (13-24) are reported. Molecular structure of NHC precursors 8 and 12 and cationic complexes 15 and 16 was established by single crystal X-ray diffraction method. The silver(I) complexes demonstrated various significant intramolecular agostic-like interactions operating between the metal center and the hydrogen atoms of the substituents alongside a variety of feeble π-π stacking interactions. A distorted linear coordination geometry is documented at the silver(I) center with the anti-arrangement of the ligands. Further, the complexes demonstrated promising antibacterial properties against Gram positive and Gram negative bacterial strains, especially complex 18 displayed a minimum inhibitory concentration (MIC) of 2 and 4 μg/mL against S. aureus and E. coli, and P. aeruginosa, respectively. Furthermore, complexes 14, 15, 16 and 18 were found cytotoxic against the human lung cancer cell lines A549 and H1975 with the IC50 (concentration of the test sample required to kill 50% of the cell population) value under 10 μM, while mono-NHC complex 20 displayed a potential drug window with the IC50 of 13.7 ± 2.70 and 14.5 ± 1.20 μM against the cancer cell lines H1975 and A549, respectively. Notably, these complexes displayed relatively lesser cytotoxic behaviour against the normal skin fibroblast cell line, Hs68. All the NHC precursors displayed significantly lower biological activities compared with their respective complexes, indicating the utility of silver(I) ions in antimicrobial and antilung cancer applications.
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Affiliation(s)
- Gautam Achar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India
| | - C R Shahini
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India
| | - Jan Grzegorz Małecki
- Department of Crystallography, Institute of Chemistry, University of Silesia, 9th Szkolna St., 40-006 Katowice, Poland
| | - Szu-Hua Pan
- Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Albert Lan
- Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Xuan-Ren Chen
- Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Srinivasa Budagumpi
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India.
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25
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Ether and coumarin–functionalized (benz)imidazolium salts and their silver(I)–N–heterocyclic carbene complexes: Synthesis, characterization, crystal structures and antimicrobial studies. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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