1
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He K, Hu Y, Bai X, Liao X. Rapid Screening of Chemical Components in Salvia miltiorrhiza with the Potential to Inhibit Skin Inflammation. Int J Mol Sci 2024; 25:7369. [PMID: 39000476 PMCID: PMC11242382 DOI: 10.3390/ijms25137369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 06/26/2024] [Accepted: 07/03/2024] [Indexed: 07/16/2024] Open
Abstract
Hyaluronidase possesses the capacity to degrade high-molecular-weight hyaluronic acid into smaller fragments, subsequently initiating a cascade of inflammatory responses and activating dendritic cells. In cases of bacterial infections, substantial quantities of HAase are generated, potentially leading to severe conditions such as cellulitis. Inhibiting hyaluronidase activity may offer anti-inflammatory benefits. Salvia miltiorrhiza Bunge, a traditional Chinese medicine, has anti-inflammatory properties. However, its effects on skin inflammation are not well understood. This study screened and evaluated the active components of S. miltiorrhiza that inhibit skin inflammation, using ligand fishing, enzyme activity assays, drug combination analysis, and molecular docking. By combining magnetic nanomaterials with hyaluronidase functional groups, we immobilized hyaluronidase on magnetic nanomaterials for the first time in the literature. We then utilized an immobilized enzyme to specifically adsorb the ligand; two ligands were identified as salvianolic acid B and rosmarinic acid by HPLC analysis after desorption of the dangling ligands, to complete the rapid screening of potential anti-inflammatory active ingredients in S. miltiorrhiza roots. The median-effect equation and combination index results indicated that their synergistic inhibition of hyaluronidase at a fixed 3:2 ratio was enhanced with increasing concentrations. Kinetic studies revealed that they acted as mixed-type inhibitors of hyaluronidase. Salvianolic acid B had Ki and Kis values of 0.22 and 0.96 μM, respectively, while rosmarinic acid had values of 0.54 and 4.60 μM. Molecular docking revealed that salvianolic acid B had a higher affinity for hyaluronidase than rosmarinic acid. In addition, we observed that a 3:2 combination of SAB and RA significantly decreased the secretion of TNF-α, IL-1, and IL-6 inflammatory cytokines in UVB-irradiated HaCaT cells. These findings identify salvianolic acid B and rosmarinic acid as key components with the potential to inhibit skin inflammation, as found in S. miltiorrhiza. This research is significant for developing skin inflammation treatments. It demonstrates the effectiveness and broad applicability of the magnetic nanoparticle-based ligand fishing approach for screening enzyme inhibitors derived from herbal extracts.
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Affiliation(s)
- Kehang He
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yikao Hu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xiaolin Bai
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xun Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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2
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Qin Y, Li G, Wang L, Yin G, Zhang X, Wang H, Zheng P, Hua W, Cheng Y, Zhao Y, Zhang J. Modular preparation of biphenyl triazoles via click chemistry as non-competitive hyaluronidase inhibitors. Bioorg Chem 2024; 146:107291. [PMID: 38521011 DOI: 10.1016/j.bioorg.2024.107291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/06/2024] [Accepted: 03/15/2024] [Indexed: 03/25/2024]
Abstract
Hyaluronidase is a promising target in drug discovery, given its overexpression in a range of physiological and pathological processes, including tumor migration, skin aging, sagging, and wrinkling, as well as inflammation and bacterial infections. In this study, to identify novel hyaluronidase inhibitors, we applied click chemistry for the modular synthesis of 370 triazoles in 96-well plates, starting with biphenyl azide. Utilizing an optimized turbidimetric screening assay in microplates, we identified Fmoc-containing triazoles 5 and 6, as well as quinoline-containing triazoles 15 and 16, as highly effective hyaluronidase inhibitors. Subsequent research indicated that these triazoles potentially interact with a novel binding site of hyaluronidase. Notably, these inhibitors displayed minimal cytotoxicity and showed promising anti-inflammatory effects in LPS-stimulated macrophages. Remarkably, compound 6 significantly reduced NO release by 74 % at a concentration of 20 μM.
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Affiliation(s)
- Yiman Qin
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Guanyi Li
- School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Ling Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Guangyuan Yin
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Xiang Zhang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Hongxiang Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Pengfei Zheng
- First School of Clinical Medicine, Anhui Medical University, Hefei 230032, PR China
| | - Wentao Hua
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Yan Cheng
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China
| | - Yaxue Zhao
- School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, PR China.
| | - Jiong Zhang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, Hefei 230032, PR China.
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3
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Mihalovits LM, Kollár L, Bajusz D, Knez D, Bozovičar K, Imre T, Ferenczy GG, Gobec S, Keserű GM. Molecular Mechanism of Labelling Functional Cysteines by Heterocyclic Thiones. Chemphyschem 2024; 25:e202300596. [PMID: 37888491 DOI: 10.1002/cphc.202300596] [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: 08/21/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 10/28/2023]
Abstract
Heterocyclic thiones have recently been identified as reversible covalent warheads, consistent with their mild electrophilic nature. Little is known so far about their mechanism of action in labelling nucleophilic sidechains, especially cysteines. The vast number of tractable cysteines promotes a wide range of target proteins to examine; however, our focus was put on functional cysteines. We chose the main protease of SARS-CoV-2 harboring Cys145 at the active site that is a structurally characterized and clinically validated target of covalent inhibitors. We screened an in-house, cysteine-targeting covalent inhibitor library which resulted in several covalent fragment hits with benzoxazole, benzothiazole and benzimidazole cores. Thione derivatives and Michael acceptors were selected for further investigations with the objective of exploring the mechanism of inhibition of the thiones and using the thoroughly characterized Michael acceptors for benchmarking our studies. Classical and hybrid quantum mechanical/molecular mechanical (QM/MM) molecular dynamics simulations were carried out that revealed a new mechanism of covalent cysteine labelling by thione derivatives, which was supported by QM and free energy calculations and by a wide range of experimental results. Our study shows that the molecular recognition step plays a crucial role in the overall binding of both sets of molecules.
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Affiliation(s)
- Levente M Mihalovits
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Levente Kollár
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., 1111, Budapest, Hungary
| | - Dávid Bajusz
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Damijan Knez
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Ljubljana, Aškerčeva cesta 7, 1000, Ljubljana, Slovenia
| | - Krištof Bozovičar
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Ljubljana, Aškerčeva cesta 7, 1000, Ljubljana, Slovenia
| | - Tímea Imre
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
- MS Metabolomics Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - György G Ferenczy
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
| | - Stanislav Gobec
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Ljubljana, Aškerčeva cesta 7, 1000, Ljubljana, Slovenia
| | - György M Keserű
- Medicinal Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., 1111, Budapest, Hungary
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4
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Sankaram GS, Sahoo T, Sridhar B, Subba Reddy BV. Rhodium(III)-catalyzed oxidative annulation of N-arylbenzamidines with maleimides via dual C-H activation. Org Biomol Chem 2023; 21:1719-1724. [PMID: 36723131 DOI: 10.1039/d2ob01972h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An oxidative annulation of N-arylbenzimidamides with maleimides has been developed for the first time using a catalytic amount of the [Cp*RhCl2]2 complex for the synthesis of a diverse range of 1H-benzo[4,5]imidazo[2,1-a]pyrrolo[3,4-c]isoquinoline-1,3(2H)-dione derivatives. This method is versatile and atom-economical for producing polycyclic benzo[4,5]imidazo[2,1-a]pyrrolo[3,4-c] isoquinoline-1,3(2H)-dione scaffolds in a single step.
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Affiliation(s)
- G Siva Sankaram
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, India
| | - Tanmoy Sahoo
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, India
| | - B Sridhar
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.
| | - B V Subba Reddy
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
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5
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13C-NMR Chemical Shifts in 1,3-Benzazoles as a Tautomeric Ratio Criterion. Molecules 2022; 27:molecules27196268. [PMID: 36234805 PMCID: PMC9570581 DOI: 10.3390/molecules27196268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/14/2022] [Accepted: 09/18/2022] [Indexed: 11/17/2022] Open
Abstract
Benzimidazole is an important heterocyclic fragment, present in many biologically active compounds with a great variety of therapeutic purposes. Most of the benzimidazole activities are explained through the existence of 1,3-tautomeric equilibrium. As the binding affinity of each tautomer to a protein target depends on an established bioactive conformation, the effect of tautomers on the ligand protein binding mechanism is determinant. In this work, we searched and analyzed a series of reported 13C-NMR spectra of benzazoles and benzazolidine-2-thiones with the purpose of estimating their tautomeric equilibrium. Herein, several approaches to determine this problem are presented, which makes it a good initial introduction to the non-expert reader. This chemical shift difference and C4/C7 signals of benzimidazolidine-2-thione and 1-methyl-2-thiomethylbenzimidazole as references were used in this work to quantitatively calculate, in solution, the pyrrole–pyridine tautomeric ratio in equilibrium. The analysis will help researchers to correctly assign the chemical shifts of benzimidazoles and to calculate their intracyclic or exocyclic tautomeric ratio as well as mesomeric proportion in benzimidazoles.
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6
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Aslam M, Mohandoss S, Lee YR. Chemoselective Installation of Diverse Succinimides on Fused Benzimidazoles via Rhodium-Catalyzed C-H Activation/Annulation: Chemosensor for Heavy Metals. Org Lett 2021; 23:6206-6211. [PMID: 34342469 DOI: 10.1021/acs.orglett.1c01793] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel Rh-catalyzed cascade C-H activation/annulation of 2-arylbenzimidazoles with maleimides is reported. Rapid chemoselective access to two structurally distinct succinimide-bearing benzoimidazoisoquinolinones is achieved, depending on the acidic and basic conditions. This atom- and step-economic strategy features a wide substrate scope, excellent functional group tolerance, and site-specific functionalization. Application of the methodology yields a novel benzimidazole-based probe as a fluorescent chemosensor for the nanomolar detection of Hg2+, Cu2+, and Fe3+ ions.
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Affiliation(s)
- Mohammad Aslam
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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7
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Zhu Z, Liu S, Hu Z, Xie Z, Tang J, Le Z. Visible‐Light‐Induced Aerobic Oxidative C
sp
3
−H Functionalization of Glycine Derivatives for 2‐Substituted Benzoxazoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100134] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhi‐Qiang Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Shan Liu
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Zhi‐Yu Hu
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Zong‐Bo Xie
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Juan Tang
- Ministry of Education Key Laboratory of Functional Small Organic Molecule Department of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 People's Republic of China
| | - Zhang‐Gao Le
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
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8
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Luo J, Chen G, Chen S, Li Z, Zhao Y, Liu Y. One‐Pot Tandem Protocol for the Synthesis of 1,3‐Bis(β‐aminoacrylate)‐Substituted 2‐Mercaptoimidazole Scaffolds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000789] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jian Luo
- School of Chemistry and Chemical EngineeringGuangzhou University Guangzhou 510006 China
| | - Guo‐Shu Chen
- School of Chemistry and Chemical EngineeringGuangzhou University Guangzhou 510006 China
| | - Shu‐Jie Chen
- School of Chemistry and Chemical EngineeringGuangzhou University Guangzhou 510006 China
| | - Zhao‐Dong Li
- Department of Applied Chemistry, College of Materials and EnergySouth China Agricultural University Guangzhou 510642 China)
| | - Yu‐Lei Zhao
- School of Chemistry and Chemical EngineeringQufu Normal University Jining Shi, Qufu 273165 China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical EngineeringGuangzhou University Guangzhou 510006 China
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9
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Bansal Y, Kaur M, Bansal G. Antimicrobial Potential of Benzimidazole Derived Molecules. Mini Rev Med Chem 2019; 19:624-646. [PMID: 29090668 DOI: 10.2174/1389557517666171101104024] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/12/2016] [Accepted: 09/15/2016] [Indexed: 01/07/2023]
Abstract
Structural resemblance of benzimidazole nucleus with purine nucleus in nucleotides makes benzimidazole derivatives attractive ligands to interact with biopolymers of a living system. The most prominent benzimidazole compound in nature is N-ribosyldimethylbenzimidazole, which serves as an axial ligand for cobalt in vitamin B12. This structural similarity prompted medicinal chemists across the globe to synthesize a variety of benzimidazole derivatives and to screen those for various biological activities, such as anticancer, hormone antagonist, antiviral, anti-HIV, anthelmintic, antiprotozoal, antimicrobial, antihypertensive, anti-inflammatory, analgesic, anxiolytic, antiallergic, coagulant, anticoagulant, antioxidant and antidiabetic activities. Hence, benzimidazole nucleus is considered as a privileged structure in drug discovery, and it is exploited by many research groups to develop numerous compounds that are purported to be antimicrobial. Despite a large volume of research in this area, no novel benzimidazole derived compound has emerged as clinically effective antimicrobial drug. In the present review, we have compiled various reports on benzimidazole derived antimicrobials, classified as monosubstituted, disubstituted, trisubstituted and tetrasubstituted benzimidazoles, bisbenzimidazoles, fused-benzimidazoles, and benzimidazole derivative-metal complexes. The purpose is to collate these research reports, and to generate a generalised outlay of benzimidazole derived molecules that can assist the medicinal chemists in selecting appropriate combination of substituents around the nucleus for designing potent antimicrobials.
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Affiliation(s)
- Yogita Bansal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala - 147002, India
| | - Manjinder Kaur
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala - 147002, India
| | - Gulshan Bansal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala - 147002, India
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10
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Abdeldjebar H, Belmiloud Y, Djitli W, Achour S, Brahimi M, Tangour B. Proton transfer in the benzimidazolone and benzimidazolthione tautomerism process catalyzed by polar protic solvents. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.1177/1468678319825740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The tautomeric equilibrium of benzimidazolone and benzimidazolthione have been studied by the density functional theory method using the CAM-B3LYP functional together with the 6-311G(d,p) basis set. Two separate mechanisms have been investigated: a direct intramolecular transfer using the polarizable continuum model and an indirect proton transfer assisted by a molecule of solvent (C6H12, H2O, CH3OH, and H2O2). In both cases, the results obtained indicate that ketone and thione are the most stable forms. However, the enhanced height of the activation barrier for the four-center mechanisms describing the tautomerism reaction as a direct intramolecular transfer implicates a relatively disadvantaged process. The participation of a polar protic solvent molecule allows the lowering of the activation energy barrier. Potential energy profiles of keto-enol and thio-enol tautomerism assisted by methanol and water are very different. The former one describes a concerted mechanism but the latter does not because it is associated with asynchronous processes that take place during the thio-enol tautomerism.
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Affiliation(s)
- Hasnia Abdeldjebar
- Laboratoire de Physico-Chimie Théorique et de Chimie Informatique, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumediene, Alger, Algeria
| | - Yamina Belmiloud
- Laboratoire de Physico-Chimie Théorique et de Chimie Informatique, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumediene, Alger, Algeria
| | - Wassila Djitli
- Laboratoire de Physico-Chimie Théorique et de Chimie Informatique, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumediene, Alger, Algeria
| | - Sofien Achour
- Research Unit of Modelisation on Fundamental Sciences and Didactics, IPEIEM, Université de Tunis El Manar, Tunis, Tunisia
| | - Meziane Brahimi
- Laboratoire de Physico-Chimie Théorique et de Chimie Informatique, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumediene, Alger, Algeria
| | - Bahoueddine Tangour
- Laboratoire de Physico-Chimie Théorique et de Chimie Informatique, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumediene, Alger, Algeria
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11
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Amin SA, Adhikari N, Gayen S, Jha T. Reliable structural information for rational design of benzoxazole type potential cholesteryl ester transfer protein (CETP) inhibitors through multiple validated modeling techniques. J Biomol Struct Dyn 2019; 37:4528-4541. [DOI: 10.1080/07391102.2018.1552895] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sk. Abdul Amin
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India
| | - Nilanjan Adhikari
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India
| | - Shovanlal Gayen
- Laboratory of Drug Design and Discovery, Department of Pharmaceutical Sciences, Dr. Harisingh Gour University, Sagar, Madhya Pradesh, India
| | - Tarun Jha
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India
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12
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Sharma R, Sofi FA, Rana P, Bharatam PV. Bimetallic Cu–Mn B spinel oxide catalyzed oxidative synthesis of 1,2-disubstituted benzimidazoles from benzyl bromides. NEW J CHEM 2019. [DOI: 10.1039/c8nj05504a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Cu–Mn B (a heterogeneous catalyst) catalyzed synthesis of 1-benzyl-2-phenyl-1H-benzo[d]imidazoles is reported.
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Affiliation(s)
- Rohit Sharma
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali-160062
- India
| | - Firdoos Ahmad Sofi
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali-160062
- India
| | - Preeti Rana
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali-160062
- India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Mohali-160062
- India
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13
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da Silva RB, Lange Coelho F, Rodembusch FS, Schwab RS, Schneider JMFM, da Silveira Rampon D, Schneider PH. Straightforward synthesis of photoactive chalcogen functionalized benzimidazo[1,2-a]quinolines. NEW J CHEM 2019. [DOI: 10.1039/c9nj01948k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of new organochalcogen derivatives of benzimidazo[1,2-a]quinolines were synthesized. Both sulfur and selenium derivatives presented similar photophysical properties with absorption in the UV region and fluorescence emission in the violet-blue.
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Affiliation(s)
- Rodrigo Borges da Silva
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| | - Felipe Lange Coelho
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| | - Fabiano Severo Rodembusch
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
| | - Ricardo Samuel Schwab
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- Rodovia Washington Luís
- São Carlos
- Brazil
| | | | - Daniel da Silveira Rampon
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)
- Department of Chemistry
- Federal University of Paraná – UFPR
- Curitiba
- Brazil
| | - Paulo Henrique Schneider
- Instituto de Química
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- UFRGS, Av. Bento Gonçalves
- Porto Alegre
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14
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Li Z, Dong J, Yuan Z, Yang DY, Weng Z. One-Pot Synthesis of 3-Difluoromethyl Benzoxazole-2-thiones. Org Lett 2018; 20:6407-6410. [DOI: 10.1021/acs.orglett.8b02713] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Zhengyu Li
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Jingnan Dong
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zihang Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Ding-Yah Yang
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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15
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Varna D, Kapetanaki E, Koutsari A, Hatzidimitriou AG, Psomas G, Angaridis P, Papi R, Pantazaki AA, Aslanidis P. Heterocyclic thioamide/phosphine mixed-ligand silver(I) complexes: Synthesis, molecular structures, DNA-binding properties and antibacterial activity. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Samanta PK, Banerjee R, Richards RM, Biswas P. Mesoporous silica supported ytterbium as catalyst for synthesis of 1,2-disubstituted benzimidazoles and 2-substituted benzimidazoles. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4507] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Partha Kumar Samanta
- Department of Chemistry; Indian Institute of Engineering Science and Technology, Shibpur; Howrah 711 103 West Bengal India
| | - Rumeli Banerjee
- Department of Chemistry; Indian Institute of Engineering Science and Technology, Shibpur; Howrah 711 103 West Bengal India
| | - Ryan M. Richards
- Department of Chemistry; Colorado School of Mines; Golden CO 80401 USA
| | - Papu Biswas
- Department of Chemistry; Indian Institute of Engineering Science and Technology, Shibpur; Howrah 711 103 West Bengal India
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Montanari E, Di Meo C, Oates A, Coviello T, Matricardi P. Pursuing Intracellular Pathogens with Hyaluronan. From a 'Pro-Infection' Polymer to a Biomaterial for 'Trojan Horse' Systems. Molecules 2018; 23:E939. [PMID: 29670009 PMCID: PMC6017551 DOI: 10.3390/molecules23040939] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/12/2018] [Accepted: 04/13/2018] [Indexed: 12/12/2022] Open
Abstract
Hyaluronan (HA) is among the most important bioactive polymers in mammals, playing a key role in a number of biological functions. In the last decades, it has been increasingly studied as a biomaterial for drug delivery systems, thanks to its physico-chemical features and ability to target and enter certain cells. The most important receptor of HA is ‘Cluster of Differentiation 44’ (CD44), a cell surface glycoprotein over-expressed by a number of cancers and heavily involved in HA endocytosis. Moreover, CD44 is highly expressed by keratinocytes, activated macrophages and fibroblasts, all of which can act as ‘reservoirs’ for intracellular pathogens. Interestingly, both CD44 and HA appear to play a key role for the invasion and persistence of such microorganisms within the cells. As such, HA is increasingly recognised as a potential target for nano-carriers development, to pursuit and target intracellular pathogens, acting as a ‘Trojan Horse’. This review describes the biological relationship between HA, CD44 and the entry and survival of a number of pathogens within the cells and the subsequent development of HA-based nano-carriers for enhancing the intracellular activity of antimicrobials.
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Affiliation(s)
- Elita Montanari
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Chiara Di Meo
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Angela Oates
- School of Healthcare, Faculty of Medicine and Health, University of Leeds, Leeds LS2 9JT, UK.
| | - Tommasina Coviello
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Pietro Matricardi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
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18
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Egorov DM, Piterskaya YL, Erkhitueva EB, Svintsitskaya NI, Dogadina AV. 3-Phosphorylated thioazoles. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217090067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Mary YS, Alzoman NZ, Menon VV, Al-Abdullah ES, El-Emam AA, Panicker CY, Temiz-Arpaci O, Armaković S, Armaković SJ, Van Alsenoy C. Reactive, spectroscopic and antimicrobial assessments of 5-[(4-methylphenyl) acetamido]-2-(4-tert-butylphenyl)benzoxazole: Combined experimental and computational study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Pilania M, Velladurai A, Tantak MP, Kumar D. Cu-Catalyzed Expeditious Synthesis of N-Benzylaminoheter-ocycles Using N-Tosylhydrazones and Aminoheteroarenes. ChemistrySelect 2016. [DOI: 10.1002/slct.201601734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Meenakshi Pilania
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| | - Arun Velladurai
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| | - Mukund P. Tantak
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| | - Dalip Kumar
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
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21
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Varna D, Psomas G, Choli-Papadopoulou T, Papi R, Hatzidimitriou AG, Aslanidis P. Dinuclear copper(I) complexes of N-methylbenzothiazole-2-thione: synthesis, structures, antibacterial activity and DNA interaction. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1206893] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- D. Varna
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - G. Psomas
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - T. Choli-Papadopoulou
- Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - R. Papi
- Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - A. G. Hatzidimitriou
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - P. Aslanidis
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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22
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Sun X, Lv XH, Ye LM, Hu Y, Chen YY, Zhang XJ, Yan M. Synthesis of benzimidazoles via iridium-catalyzed acceptorless dehydrogenative coupling. Org Biomol Chem 2016; 13:7381-3. [PMID: 26065641 DOI: 10.1039/c5ob00904a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Iridium-catalyzed acceptorless dehydrogenative coupling of tertiary amines and arylamines has been developed. A number of benzimidazoles were prepared in good yields. An iridium-mediated C-H activation mechanism is suggested. This finding represents a novel strategy for the synthesis of benzimidazoles.
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Affiliation(s)
- Xiang Sun
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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23
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Li X, Huang B, Zhou Z, Gao P, Pannecouque C, Daelemans D, De Clercq E, Zhan P, Liu X. Arylazolyl(azinyl)thioacetanilides: Part 19: Discovery of Novel Substituted Imidazo[4,5-b]pyridin-2-ylthioacetanilides as Potent HIV NNRTIs Via a Structure-based Bioisosterism Approach. Chem Biol Drug Des 2016; 88:241-53. [PMID: 26914186 DOI: 10.1111/cbdd.12751] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 01/14/2016] [Accepted: 02/14/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Xiao Li
- Department of Medicinal Chemistry; Key Laboratory of Chemical Biology (Ministry of Education) School of Pharmaceutical Sciences; Shandong University; 44, West Culture Road Jinan Shandong 250012 China
| | - Boshi Huang
- Department of Medicinal Chemistry; Key Laboratory of Chemical Biology (Ministry of Education) School of Pharmaceutical Sciences; Shandong University; 44, West Culture Road Jinan Shandong 250012 China
| | - Zhongxia Zhou
- Department of Medicinal Chemistry; Key Laboratory of Chemical Biology (Ministry of Education) School of Pharmaceutical Sciences; Shandong University; 44, West Culture Road Jinan Shandong 250012 China
| | - Ping Gao
- Department of Medicinal Chemistry; Key Laboratory of Chemical Biology (Ministry of Education) School of Pharmaceutical Sciences; Shandong University; 44, West Culture Road Jinan Shandong 250012 China
| | - Christophe Pannecouque
- Rega Institute for Medical Research; KU Leuven; Minderbroedersstraat 10 B-3000 Leuven Belgium
| | - Dirk Daelemans
- Rega Institute for Medical Research; KU Leuven; Minderbroedersstraat 10 B-3000 Leuven Belgium
| | - Erik De Clercq
- Rega Institute for Medical Research; KU Leuven; Minderbroedersstraat 10 B-3000 Leuven Belgium
| | - Peng Zhan
- Department of Medicinal Chemistry; Key Laboratory of Chemical Biology (Ministry of Education) School of Pharmaceutical Sciences; Shandong University; 44, West Culture Road Jinan Shandong 250012 China
| | - Xinyong Liu
- Department of Medicinal Chemistry; Key Laboratory of Chemical Biology (Ministry of Education) School of Pharmaceutical Sciences; Shandong University; 44, West Culture Road Jinan Shandong 250012 China
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Tan Q, Xu B. CH Bond Activation as a Powerful Tool in the Construction of Biologically Active Nitrogen-Containing Heterocycles. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2016. [DOI: 10.1016/b978-0-444-63749-9.00009-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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25
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Singh S, Veeraswamy G, Bhattarai D, Goo JI, Lee K, Choi Y. Recent Advances in the Development of Pharmacologically Active Compounds that Contain a Benzoxazole Scaffold. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500235] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sarbjit Singh
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Gajulapati Veeraswamy
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
| | - Deepak Bhattarai
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Ja-Il Goo
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
| | - Kyeong Lee
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Yongseok Choi
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
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26
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Varna D, Hatzidimitriou A, Velali E, Pantazaki A, Aslanidis P. Structural diversity in dinuclear copper(I) halide complexes of 2,4-dithiouracil: Synthesis, crystal structures, induction of DNA damage and oxidative stress mediated by ROS. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.12.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Synthesis and antimycobacterial and photosynthesis-inhibiting evaluation of 2-[(E)-2-substituted-ethenyl]-1,3-benzoxazoles. ScientificWorldJournal 2014; 2014:705973. [PMID: 25197708 PMCID: PMC4146477 DOI: 10.1155/2014/705973] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 07/15/2014] [Indexed: 11/18/2022] Open
Abstract
A series of twelve 2-[(E)-2-substituted-ethenyl]-1,3-benzoxazoles was designed. All the synthesized compounds were tested against three mycobacterial strains. The compounds were also evaluated for their ability to inhibit photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. 2-[(E)-2-(4-Methoxyphenyl)ethenyl]-1,3-benzoxazole, 2-[(E)-2-(2,3-dihydro-1-benzofuran-5-yl)ethenyl]-1,3-benzoxazole and 2-{(E)-2-[4-(methylsulfanyl)phenyl]ethenyl}-1,3-benzoxazole showed the highest activity against M. tuberculosis, M. kansasii, and M. avium, and they demonstrated significantly higher activity against M. avium and M. kansasii than isoniazid. The PET-inhibiting activity of the most active ortho-substituted compound 2-[(E)-2-(2-methoxyphenyl)ethenyl]-1,3-benzoxazole was IC₅₀ = 76.3 μmol/L, while the PET-inhibiting activity of para-substituted compounds was significantly lower. The site of inhibitory action of tested compounds is situated on the donor side of photosystem II. The structure-activity relationships are discussed.
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28
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Papazoglou I, Papadopoulos A, Skoulika S, Lafazanis K, Geromichalos G, Pantazaki A, Aslanidis P. Metal-assisted desulfurization of 2-thioorotic acid: Structure, theoretical (DFT) investigations, in vitro antibacterial and cytotoxic activity and DNA degradation ability of a copper(II) complex containing in situ formed bis(4-carboxylato-6-oxo-pyrimidine-2-yl)sulfide. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.04.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Xue D, Long YQ. Metal-free TEMPO-promoted C(sp³)-H amination to afford multisubstituted benzimidazoles. J Org Chem 2014; 79:4727-34. [PMID: 24758603 DOI: 10.1021/jo5005179] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient TEMPO-air/cat. TEMPO-O2 oxidative protocol was developed to synthesize multisubstituted or fused tetracyclic benzimidazoles via a metal-free oxidative C-N coupling between the sp(3) C-H and free N-H of readily available N(1)-benzyl/alkyl-1,2-phenylenediamines.
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Affiliation(s)
- Ding Xue
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China
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30
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Evangelinou O, Hatzidimitriou A, Velali E, Pantazaki A, Voulgarakis N, Aslanidis P. Mixed-ligand copper(I) halide complexes bearing 4,5-bis(diphenylphosphano)-9,9-dimethyl-xanthene and N-methylbenzothiazole-2-thione: Synthesis, structures, luminescence and antibacterial activity mediated by DNA and membrane damage. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.02.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Vinoth Kumar S, Subramanian MR, Chinnaiyan SK. Synthesis, characterisation and evaluation of N-mannich bases of 2-substituted Benzimidazole derivatives. J Young Pharm 2013; 5:154-9. [PMID: 24563595 DOI: 10.1016/j.jyp.2013.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 11/16/2013] [Indexed: 10/25/2022] Open
Abstract
RATIONALE Benzimidazoles and its derivatives represent one of the mainly biological active classes of literature. AIM In this present study aimed to synthesize N-mannich bases derivatives compounds bearing of 2-substituted benzimidazole moiety, in order to investigate their possible biological activity. METHOD Benzimidazole compounds were prepared from the condensation reaction between ortho phenylene diamine and various acids. Mannich base of newly synthesized Benzimidazole derivatives were synthesized from 2-substituted Benzimidazoles by reacting with secondary amines. The purity of the compounds was ascertained by melting point (m.p) and thin layer chromatography (TLC). Structures of the synthesized compounds were elucidated by spectral data. Antimicrobial assay was performed by microbroth dilution method. Bacterial genomic DNA cleavage was assessed by Agarose gel electrophoresis. Toxicity of the most effective compounds was studied by Brine-shrimp lethality assay. RESULT Among the synthesized compounds, compound 5E (a) and (b) was establish to be the most potent against all tested microorganisms. This two compounds exhibited complete bacterial DNA cleavage and non-toxic. CONCLUSION These results suggest that it an interesting compound compared to the current therapeutic agents and are considered to investigate further for the same.
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Affiliation(s)
- Sekar Vinoth Kumar
- Department of Pharmaceutical Chemistry, Gokulakrishna College of Pharmacy, Andhra Pradesh 524121, India
| | | | - Santhosh Kumar Chinnaiyan
- Department of Pharmaceutical Biotechnology, Srikrupa Institute of Pharmaceutical Sciences, Andhra Pradesh 502277, India
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Farahi M, Karami B, Azari M. Tungstate sulfuric acid as an efficient catalyst for the synthesis of benzoxazoles and benzothiazoles under solvent-free conditions. CR CHIM 2013. [DOI: 10.1016/j.crci.2013.03.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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33
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Kobayashi K, Ezaki K, Hashimoto H. Synthesis of (4 Z)-4-(Arylmethylidene)-5-ethoxy-1,3-oxazolidine-2-thiones by the Reaction of Ethyl (2 Z)-3-Aryl-2-isothiocyanatoprop-2-enoates with Organolithium Compounds. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yang W, Liu H, Li M, Wang F, Zhou W, Fan J. Synthesis, structures and antibacterial activities of benzoylthiourea derivatives and their complexes with cobalt. J Inorg Biochem 2012; 116:97-105. [PMID: 23018272 DOI: 10.1016/j.jinorgbio.2012.08.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/01/2012] [Accepted: 08/01/2012] [Indexed: 11/19/2022]
Abstract
Four new thiocarbonyl fluorobenzamides and their complexes with cobalt have been synthesized and characterized by elemental analysis, FTIR, and (1)H NMR. Five crystal structures of the thioylbenzamides complexes of Co(PTCB)(3), Co(2FPTCB)(3), Co(4FPTCB)(3), Co(2FMTCB)(2) and Co(4FMTCB)(3) have been determined by X-ray diffraction. The antibacterial properties of these compounds against the bacteria, E. coli, Staphylococcus aureus, B. subtilis, P. aeruginosa, and Shewanella sp. were investigated. The experiments showed that both compounds and the complexes had the antibacterial activities against all of the studied bacteria. The thioylbenzamides had stronger controls for the bacteria of E. coli, S. aureus, B. subtilis and P. aeruginosa than their corresponding cobalt complexes. There was the contrary result against the bacteria of Shewanella sp. The para-substitution of fluorine atom increased antibacterial activities, while fluorine atom was substituted on ortho-benzoyl, the antibacterial activity weakened. The thioylbenzamides linked to piperidine instead of a morpholine group may increase the antibacterial activities.
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Affiliation(s)
- Wen Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, PR China
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Ouyang L, Huang Y, Zhao Y, He G, Xie Y, Liu J, He J, Liu B, Wei Y. Preparation, antibacterial evaluation and preliminary structure–activity relationship (SAR) study of benzothiazol- and benzoxazol-2-amine derivatives. Bioorg Med Chem Lett 2012; 22:3044-9. [DOI: 10.1016/j.bmcl.2012.03.079] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 03/13/2012] [Accepted: 03/22/2012] [Indexed: 10/28/2022]
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