1
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Zhou G, Li Y. Investigation of bacterial DNA gyrase Inhibitor classification models and structural requirements utilizing multiple machine learning methods. Mol Divers 2024; 28:2119-2133. [PMID: 38372837 DOI: 10.1007/s11030-024-10806-y] [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: 11/09/2023] [Accepted: 01/04/2024] [Indexed: 02/20/2024]
Abstract
Infections from multidrug-resistant (MDR) bacteria have emerged as a paramount global health concern, and the therapeutic effectiveness of current treatments is swiftly diminishing. An urgent need exists to explore innovative strategies for countering drug-resistant bacteria. Bacterial DNA gyrase, functioning as an ATP-dependent enzyme, plays a pivotal role in the intricate processes of transcription, replication, and chromosome segregation within bacterial DNA. This renders it a prime target for the development of innovative antibacterial agents. However, the experimental identification of bacterial DNA gyrase inhibitors faces multifaceted challenges due to current methodological constraints. Recognizing its significance, this study developed 56 computational models designed for predicting bacterial DNA gyrase inhibitors. These models employed seven distinct molecular fingerprints and eight machine learning algorithms. Among these models, Model_2D, created using KlekotaRoth fingerprints and the SVM algorithm, stands out as the most robust performer (ACC = 0.86, MCC = 0.63, G-mean = 0.82). Moreover, given the limited exploration of structural fragments required for DNA Gyrase B inhibitors, crucial structural fingerprints influencing DNA Gyrase B inhibitors were identified through Bayesian classification. Subsequently, we conducted molecular docking to reveal the binding modes between these crucial structural fingerprints and the active site of DNA gyrase B. In conclusion, the present study aimed to develop the optimal classification model for bacterial DNA gyrase inhibitors, offering invaluable support to medicinal chemists creating innovative DNA gyrase inhibitors.
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Affiliation(s)
- Guozheng Zhou
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, Liaoning, China
| | - Yan Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, Liaoning, China.
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2
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Baidya M, Kumbhakar P, De Sarkar S. Metal-Free Electrocatalytic Synthesis of Fused Azabicycles from N-Allyl Enamine Carboxylates. Org Lett 2024; 26:2651-2655. [PMID: 38517192 DOI: 10.1021/acs.orglett.4c00756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
An electrocatalytic approach to access structurally significant azabicyclic scaffolds from N-allyl enamine carboxylates is illustrated. This metal-free method functions exclusively with a catalytic amount of iodide, strategically employed to electrochemically generate a reactive hypervalent iodine species, which facilitates the cascade bicyclization processes with enhanced precision and efficiency. Excellent functional group compatibility was observed, enabling the synthesis of a series of azabicycle derivatives. Detailed mechanistic and electrochemical studies enhance the comprehension of the reaction sequence.
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Affiliation(s)
- Mrinmay Baidya
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Pintu Kumbhakar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
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3
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Faleye OS, Boya BR, Lee JH, Choi I, Lee J. Halogenated Antimicrobial Agents to Combat Drug-Resistant Pathogens. Pharmacol Rev 2023; 76:90-141. [PMID: 37845080 DOI: 10.1124/pharmrev.123.000863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/07/2023] [Accepted: 09/29/2023] [Indexed: 10/18/2023] Open
Abstract
Antimicrobial resistance presents us with a potential global crisis as it undermines the abilities of conventional antibiotics to combat pathogenic microbes. The history of antimicrobial agents is replete with examples of scaffolds containing halogens. In this review, we discuss the impacts of halogen atoms in various antibiotic types and antimicrobial scaffolds and their modes of action, structure-activity relationships, and the contributions of halogen atoms in antimicrobial activity and drug resistance. Other halogenated molecules, including carbohydrates, peptides, lipids, and polymeric complexes, are also reviewed, and the effects of halogenated scaffolds on pharmacokinetics, pharmacodynamics, and factors affecting antimicrobial and antivirulence activities are presented. Furthermore, the potential of halogenation to circumvent antimicrobial resistance and rejuvenate impotent antibiotics is addressed. This review provides an overview of the significance of halogenation, the abilities of halogens to interact in biomolecular settings and enhance pharmacological properties, and their potential therapeutic usages in preventing a postantibiotic era. SIGNIFICANCE STATEMENT: Antimicrobial resistance and the increasing impotence of antibiotics are critical threats to global health. The roles and importance of halogen atoms in antimicrobial drug scaffolds have been established, but comparatively little is known of their pharmacological impacts on drug resistance and antivirulence activities. This review is the first to extensively evaluate the roles of halogen atoms in various antibiotic classes and pharmacological scaffolds and to provide an overview of their ability to overcome antimicrobial resistance.
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Affiliation(s)
- Olajide Sunday Faleye
- School of Chemical Engineering (O.S.F., B.R.B., J.-H.L., J.L.) and Department of Medical Biotechnology (I.C.), Yeungnam University, Gyeongsan, Republic of Korea
| | - Bharath Reddy Boya
- School of Chemical Engineering (O.S.F., B.R.B., J.-H.L., J.L.) and Department of Medical Biotechnology (I.C.), Yeungnam University, Gyeongsan, Republic of Korea
| | - Jin-Hyung Lee
- School of Chemical Engineering (O.S.F., B.R.B., J.-H.L., J.L.) and Department of Medical Biotechnology (I.C.), Yeungnam University, Gyeongsan, Republic of Korea
| | - Inho Choi
- School of Chemical Engineering (O.S.F., B.R.B., J.-H.L., J.L.) and Department of Medical Biotechnology (I.C.), Yeungnam University, Gyeongsan, Republic of Korea
| | - Jintae Lee
- School of Chemical Engineering (O.S.F., B.R.B., J.-H.L., J.L.) and Department of Medical Biotechnology (I.C.), Yeungnam University, Gyeongsan, Republic of Korea
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4
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Luo Z, Cao B, Song T, Xing Z, Ren J, Wang Z. Visible-Light Organophotoredox-Mediated [3 + 2] Cycloaddition of Arylcyclopropylamine with Structurally Diverse Olefins for the Construction of Cyclopentylamines and Spiro[4. n] Skeletons. J Org Chem 2022; 87:15511-15529. [PMID: 36318193 DOI: 10.1021/acs.joc.2c02061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We developed a visible-light-mediated [3 + 2] cycloaddition of arylcyclopropylamine with structurally diverse olefins using QXPT-NPh as a highly efficient organic photoredox catalyst. We first achieved the use of various alkyl-substituted alkenes in intermolecular [3 + 2] cycloadditions with cyclopropylamine. We also developed a general and efficient strategy for the construction of structurally diverse cyclopentane-based spiro[4.n] skeletons with 1,3-difunctional groups, which broadly exist in natural products and synthetic molecules. Furthermore, we proposed a hydrogen-bond mode between the arylcyclopropylamine and the photocatalyst QXPT-NPh.
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Affiliation(s)
- Zhengshan Luo
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Bowen Cao
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Tianhang Song
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Zequn Xing
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Jun Ren
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Zhongwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
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5
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Meanwell NA, Loiseleur O. Applications of Isosteres of Piperazine in the Design of Biologically Active Compounds: Part 1. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10942-10971. [PMID: 35675050 DOI: 10.1021/acs.jafc.2c00726] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Piperazine and homopiperazine are well-studied heterocycles in drug design that have found gainful application as scaffolds and terminal elements and for enhancing the aqueous solubility of a molecule. The optimization of drug candidates that incorporate these heterocycles in an effort to refine potency, selectivity, and developability properties has stimulated the design and evaluation of a wide range of bioisosteres that can offer advantage. In this review, we summarize the design and application of bioisosteres of piperazine and homopiperazine that have almost exclusively been in the drug design arena. While there are ∼100 approved drugs that incorporate a piperazine ring, only a single marketed agricultural product is built on this heterocycle. As part of the review, we discuss some of the potential reasons underlying the relatively low level of importance of this heterocycle to the design of agrochemicals and highlight the potential opportunities for their use in contemporary research programs.
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Affiliation(s)
- Nicholas A Meanwell
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, New Jersey 08543, United States
| | - Olivier Loiseleur
- Syngenta Crop Protection Research, Schaffhauserstrasse, Stein CH-4332, Switzerland
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6
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Li Z, Li S, Li T, Gao X, Zhu L. Physiological and transcriptomic responses of Chlorella sorokiniana to ciprofloxacin reveal molecular mechanisms for antibiotic removal. iScience 2022; 25:104638. [PMID: 35800754 PMCID: PMC9254343 DOI: 10.1016/j.isci.2022.104638] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 04/09/2022] [Accepted: 06/14/2022] [Indexed: 11/25/2022] Open
Abstract
Microalgae-based technology is an effective and environmentally friendly method for antibiotics-contaminated wastewater treatment. To assess the tolerance and removal ability of Chlorella sorokiniana to ciprofloxacin (CIP), this study comprehensively revealed the responses of C. sorokiniana to CIP exposure and its degradation processes through physiological and transcriptomic analyses. Although the photosynthetic system was inhibited, the growth of C. sorokiniana was not negatively affected by CIP. Dissolved organic matter was analyzed and indicated that humic-like substances were released to alleviate the stress of CIP. In addition, the maximum removal of CIP was 83.3% under 20 mg L-1 CIP exposure. HPLC-MS/MS and RNA-Seq analyses suggested that CIP could be bioaccumulated and biodegraded by C. sorokiniana through the reactions of hydroxylation, demethylation, ring cleavage, oxidation, dehydrogenation, and decarboxylation with the help of intracellular oxidoreductases, especially cytochrome P450. Collectively, this research shows that C. sorokiniana have a great potential for removing CIP from wastewater.
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Affiliation(s)
- Zhuo Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Shuangxi Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Tianrui Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Xinxin Gao
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Liandong Zhu
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
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7
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Kulabaş N, Türe A, Bozdeveci A, Krishna VS, Alpay Karaoğlu Ş, Sriram D, Küçükgüzel İ. Novel fluoroquinolones containing 2‐arylamino‐2‐oxoethyl fragment: Design, synthesis, evaluation of antibacterial and antituberculosis activities and molecular modeling studies. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4430] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Necla Kulabaş
- Department of Pharmaceutical Chemistry Faculty of Pharmacy, Marmara University İstanbul Turkey
| | - Aslı Türe
- Department of Pharmaceutical Chemistry Faculty of Pharmacy, Marmara University İstanbul Turkey
| | - Arif Bozdeveci
- Department of Biology, Faculty of Art and Sciences Recep Tayyip Erdoğan University Rize Turkey
| | - Vagolu Siva Krishna
- Medicinal Chemistry Research Laboratory, Pharmacy Group Birla Institute of Technology and Science Hyderabad India
| | - Şengül Alpay Karaoğlu
- Department of Biology, Faculty of Art and Sciences Recep Tayyip Erdoğan University Rize Turkey
| | - Dharmarajan Sriram
- Medicinal Chemistry Research Laboratory, Pharmacy Group Birla Institute of Technology and Science Hyderabad India
| | - İlkay Küçükgüzel
- Department of Pharmaceutical Chemistry Faculty of Pharmacy, Marmara University İstanbul Turkey
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8
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Ching C, Zaman MH. Impact of ciprofloxacin impurities on bacterial growth, antibiotic resistance development and content assays. Lett Appl Microbiol 2021; 73:220-228. [PMID: 33905563 DOI: 10.1111/lam.13494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/22/2021] [Indexed: 11/30/2022]
Abstract
In addition to active pharmaceutical ingredient (API), antibiotics may contain small amounts of excipients and impurities and be prone to accumulation of degradation products. There has been limited work characterizing how these substances impact bacterial growth and antibiotic resistance development. We investigated how two ciprofloxacin (CIP) impurities, fluoroquinolonic acid (FQA) and ciprofloxacin ethylenediamine analogue (CEA), impact growth and antibiotic resistance in Escherichia coli. Additionally, we investigated how these impurities impact a frequently used API content assay. Both impurities displayed modest antimicrobial activity compared to the CIP API. The effective antimicrobial activity of a medicine containing increased impurity levels may permit bacterial growth and resistance development. Our results also suggest that increasing exposure concentration and duration to CEA and FQA, independent of CIP, can promote antibiotic resistance development. However, at concentrations of 100% and below the MIC of the API, impurities had limited contributions to resistance development compared to the CIP API. From a methodological standpoint, we found that UV spectrophotometry may be inadequate to account for antibiotic impurities or degradation products. This can lead to incorrect estimations of API content and we propose additional multi-wavelength measures when using UV spectrophotometry to help identify impurities or degradation.
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Affiliation(s)
- C Ching
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - M H Zaman
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
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9
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Chen Z, Lai W, Xu Y, Xie G, Hou W, Zhanchang P, Kuang C, Li Y. Anodic oxidation of ciprofloxacin using different graphite felt anodes: Kinetics and degradation pathways. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124262. [PMID: 33213981 DOI: 10.1016/j.jhazmat.2020.124262] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/26/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Ciprofloxacin (CIP) is ubiquitous in the environment which poses a certain threat to human and ecology. In this investigation, the physical and electrochemical properties of graphite felt (GF) anodes which affected the anodic oxidation (AO) performance, and the CIP removal effect of GF were evaluated. The GFs were used as anodes for detection of ·OH with coumarin (COU) as molecule probe and removal of CIP in a 150 mL electrolytic cell with Pt cathode (AO-GF/Pt system). The results showed that hydrophilic GF (B-GF) owned higher sp3/sp2 and more oxygen-containing and nitrogen-containing functional groups than the hydrophobic GF (A-GF). Moreover, B-GF possessed higher oxygen evolution potential (1.12 V), more active sites and stronger ·OH generation capacity. Above mentioned caused that B-GF exhibited more superior properties for CIP removal. The best efficiencies (96.95%, 99.83%) were obtained in the AO-B-GF/Pt system at 6.25 mAcm-2 after 10 min (k1, 0.356 min-1) and 60 min (k2, 0.224 min-1), respectively. Furthermore, nine degradation pathways of CIP in AO-B-GF/Pt system were summarized as the cleavage of the piperazine ring, cyclopropyl group, quinolone ring and F atom by ·OH. It provides new insights into the removal and degradation pathways of CIP with GF in AO system.
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Affiliation(s)
- Zhuoyao Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Weikang Lai
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yanbin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Guangyan Xie
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Waner Hou
- Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China
| | - Pan Zhanchang
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Chaozhi Kuang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuxin Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
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10
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Kirk R, Betson M, Bingham M, Doyle P, Harvey R, Huxley A, Moat J, Pesnot T, Tait M, Hallworth S, Nelson G. Novel C-7 carbon substituted fourth generation fluoroquinolones targeting N. Gonorrhoeae infections. Bioorg Med Chem Lett 2020; 30:127428. [DOI: 10.1016/j.bmcl.2020.127428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/14/2020] [Accepted: 07/19/2020] [Indexed: 10/23/2022]
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11
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Kumar A, Saxena N, Mehrotra A, Srivastava N. Review: Studies on the Synthesis of Quinolone Derivatives with Their Antibacterial Activity (Part 1). CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200427082108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Quinolone derivatives have attracted considerable attention due to their medicinal
properties. This review covers many synthetic routes of quinolones preparation with
their antibacterial properties. Detailed study with structure-activity relationship among
quinolone derivatives will be helpful in designing new drugs in this field.
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Affiliation(s)
- Anil Kumar
- Shri Siddhi Vinayak Institute of Technology, Nainital Road, Bareilly, Uttar Pradesh 241122, India
| | - Nishtha Saxena
- Bioorganic and Heterocyclic Research Laboratory, Department of Chemistry, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly, 243006 (U.P.), India
| | - Arti Mehrotra
- IMS University Course Camps, School of Bioscience, Ghaziabad, Uttar Pradesh 201015, India
| | - Nivedita Srivastava
- Bioorganic and Heterocyclic Research Laboratory, Department of Chemistry, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly, 243006 (U.P.), India
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12
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Shearer JD, Saylor ML, Butler CM, Treston AM, Heine HS, Chirakul S, Schweizer HP, Louie A, Drusano GL, Zumbrun SD, Warfield KL. GC-072: A Novel Therapeutic Candidate for Oral Treatment of Melioidosis and Infections Caused by Select Biothreat Pathogens. Antimicrob Agents Chemother 2019; 63:AAC.00834-19. [PMID: 31548183 PMCID: PMC6879241 DOI: 10.1128/aac.00834-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/13/2019] [Indexed: 12/03/2022] Open
Abstract
Burkholderia pseudomallei (B. pseudomallei), the etiological agent of melioidosis, is a Gram-negative bacterium with additional concern as a biothreat pathogen. The mortality rate from B. pseudomallei varies depending on the type of infection and extent of available health care, but in the case of septicemia left untreated it can range from 50 - 90%. Current therapy for melioidosis is biphasic, consisting of parenteral acute-phase treatment for two weeks or longer, followed by oral eradication-phase treatment lasting several months. An effective oral therapeutic for outpatient treatment of acute-phase melioidosis is needed. GC-072 is a potent, 4-oxoquinolizine antibiotic with selective inhibitory activity against bacterial topoisomerases. GC-072 has demonstrated in vitro potency against susceptible and drug-resistant strains of B. pseudomallei and is also active against Burkholderia mallei, Bacillus anthracis, Yersinia pestis, and Francisella tularensis GC-072 is bactericidal both extra- and intracellularly, with rapid killing noted within a few hours and reduced development of resistance compared to ceftazidime. GC-072, delivered intragastrically to mimic oral administration, promoted dose-dependent survival in mice using lethal inhalational models of B. pseudomallei infection following exposure to a 24 or 339 LD50 challenge with B. pseudomallei strain 1026b. Overall, GC-072 appears to be a strong candidate for first-line, oral treatment of melioidosis.
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Affiliation(s)
| | | | | | | | - Henry S Heine
- Institute for Therapeutic Innovation, University of Florida, College of Medicine, Orlando, FL
| | - Sunisa Chirakul
- Emerging Pathogens Institute, University of Florida, College of Medicine, Gainesville, FL
| | - Herbert P Schweizer
- Institute for Therapeutic Innovation, University of Florida, College of Medicine, Orlando, FL
- Emerging Pathogens Institute, University of Florida, College of Medicine, Gainesville, FL
| | - Arnold Louie
- Institute for Therapeutic Innovation, University of Florida, College of Medicine, Orlando, FL
| | - George L Drusano
- Institute for Therapeutic Innovation, University of Florida, College of Medicine, Orlando, FL
| | - Steven D Zumbrun
- United States Army Medical Research Institute of Infectious Diseases, Frederick MD
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13
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Gatadi S, Madhavi YV, Chopra S, Nanduri S. Promising antibacterial agents against multidrug resistant Staphylococcus aureus. Bioorg Chem 2019; 92:103252. [PMID: 31518761 DOI: 10.1016/j.bioorg.2019.103252] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 08/10/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022]
Abstract
Rapid emergence of multidrug resistant Staphylococcus aureus infections has created a critical health menace universally. Resistance to all the available chemotherapeutics has been on rise which led to WHO to stratify Staphylococcus aureus as high tier priorty II pathogen. Hence, discovery and development of new antibacterial agents with new mode of action is crucial to address the multidrug resistant Staphylococcus aureus infections. The egressing understanding of new antibacterials on their biological target provides opportunities for new therapeutic agents. This review underlines on various aspects of drug design, structure activity relationships (SARs) and mechanism of action of various new antibacterial agents and also covers the recent reports on new antibacterial agents with potent activity against multidrug resistant Staphylococcus aureus. This review provides attention on in vitro and in vivo pharmacological activities of new antibacterial agents in the point of view of drug discovery and development.
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Affiliation(s)
- Srikanth Gatadi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Y V Madhavi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Janakipuram Extension, Lucknow 226031, Uttar Pradesh, India
| | - Srinivas Nanduri
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India.
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14
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Mohammed HH, Abuo-Rahma GEDA, Abbas SH, Abdelhafez ESM. Current Trends and Future Directions of Fluoroquinolones. Curr Med Chem 2019; 26:3132-3149. [DOI: 10.2174/0929867325666180214122944] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 10/16/2017] [Accepted: 02/08/2018] [Indexed: 12/12/2022]
Abstract
Fluoroquinolones represent an interesting synthetic class of antimicrobial agents with broad spectrum and potent activity. Since the discovery of nalidixic acid, the prototype of quinolones, several structural modifications to the quinolone nucleus have been carried out for improvement of potency, spectrum of activity, and to understand their structure activity relationship (SAR). The C-7 substituent was reported to have a major impact on the activity. Accordingly, Substitution at C-7 or its N-4-piperazinyl moiety was found to affect potency, bioavailability, and physicochemical properties. Also, it can increase the affinity towards mammalian topoisomerases that may shift quinolones from antibacterial to anticancer candidates. Moreover, the presence of DNA topoisomerases in both eukaryotic and prokaryotic cells makes them excellent targets for chemotherapeutic intervention in antibacterial and anticancer therapies. Based on this concept, several fluoroquionolones derivatives have been synthesized and biologically evaluated as antibacterial, antituberculosis, antiproliferative, antiviral and antifungal agents. This review is an attempt to focus on the therapeutic prospects of fluoroquinolones with an updated account on their atypical applications such as antitubercular and anticancer activities.
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Affiliation(s)
- Hamada H.H. Mohammed
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | | | - Samar H. Abbas
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
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15
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Fedorowicz J, Sączewski J. Modifications of quinolones and fluoroquinolones: hybrid compounds and dual-action molecules. MONATSHEFTE FUR CHEMIE 2018; 149:1199-1245. [PMID: 29983452 PMCID: PMC6006264 DOI: 10.1007/s00706-018-2215-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/01/2018] [Indexed: 01/27/2023]
Abstract
ABSTRACT This review is aimed to provide extensive survey of quinolones and fluoroquinolones for a variety of applications ranging from metal complexes and nanoparticle development to hybrid conjugates with therapeutic uses. The review covers the literature from the past 10 years with emphasis placed on new applications and mechanisms of pharmacological action of quinolone derivatives. The following are considered: metal complexes, nanoparticles and nanodrugs, polymers, proteins and peptides, NO donors and analogs, anionic compounds, siderophores, phosphonates, and prodrugs with enhanced lipophilicity, phototherapeutics, fluorescent compounds, triazoles, hybrid drugs, bis-quinolones, and other modifications. This review provides a comprehensive resource, summarizing a broad range of important quinolone applications with great utility as a resource concerning both chemical modifications and also novel hybrid bifunctional therapeutic agents. GRAPHICAL ABSTRACT
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Affiliation(s)
- Joanna Fedorowicz
- Department of Organic Chemistry, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
| | - Jarosław Sączewski
- Department of Organic Chemistry, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland
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16
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Gerasyuto AI, Arnold MA, Wang J, Chen G, Zhang X, Smith S, Woll MG, Baird J, Zhang N, Almstead NG, Narasimhan J, Peddi S, Dumble M, Sheedy J, Weetall M, Branstrom AA, Prasad JVN, Karp GM. Discovery and Optimization of Indolyl-Containing 4-Hydroxy-2-Pyridone Type II DNA Topoisomerase Inhibitors Active against Multidrug Resistant Gram-negative Bacteria. J Med Chem 2018; 61:4456-4475. [PMID: 29727185 PMCID: PMC5991783 DOI: 10.1021/acs.jmedchem.8b00114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There exists an urgent medical need to identify new chemical entities (NCEs) targeting multidrug resistant (MDR) bacterial infections, particularly those caused by Gram-negative pathogens. 4-Hydroxy-2-pyridones represent a novel class of nonfluoroquinolone inhibitors of bacterial type II topoisomerases active against MDR Gram-negative bacteria. Herein, we report on the discovery and structure-activity relationships of a series of fused indolyl-containing 4-hydroxy-2-pyridones with improved in vitro antibacterial activity against fluoroquinolone resistant strains. Compounds 6o and 6v are representative of this class, targeting both bacterial DNA gyrase and topoisomerase IV (Topo IV). In an abbreviated susceptibility screen, compounds 6o and 6v showed improved MIC90 values against Escherichia coli (0.5-1 μg/mL) and Acinetobacter baumannii (8-16 μg/mL) compared to the precursor compounds. In a murine septicemia model, both compounds showed complete protection in mice infected with a lethal dose of E. coli.
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Affiliation(s)
- Aleksey I Gerasyuto
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Michael A Arnold
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Jiashi Wang
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Guangming Chen
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Xiaoyan Zhang
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Sean Smith
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Matthew G Woll
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - John Baird
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Nanjing Zhang
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Neil G Almstead
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Jana Narasimhan
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Srinivasa Peddi
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Melissa Dumble
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Josephine Sheedy
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Marla Weetall
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Arthur A Branstrom
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - J V N Prasad
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
| | - Gary M Karp
- PTC Therapeutics, Inc. , 100 Corporate Court , South Plainfield , New Jersey 07080 , United States
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17
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Shikhaliev K, Sabynin A, Sekirin V, Krysin M, Zubkov F, Yankina K. A New Synthetic Route to Polyhydrogenated Pyrrolo[3,4-b]pyrroles by the Domino Reaction of 3-Bromopyrrole-2,5-Diones with Aminocrotonic Acid Esters. Molecules 2017; 22:E2035. [PMID: 29165400 PMCID: PMC6150208 DOI: 10.3390/molecules22112035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 11/16/2017] [Accepted: 11/20/2017] [Indexed: 11/20/2022] Open
Abstract
A new synthetic approach to polyfunctional hexahydropyrrolo[3,4-b]pyrroles was developed based on cyclization of N-arylbromomaleimides with aminocrotonic acid esters. A highly chemo- and stereoselective reaction is a Hantzsch-type domino process, involving the steps of initial nucleophilic C-addition or substitution and subsequent intramolecular nucleophilic addition without recyclyzation of imide cycle.
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Affiliation(s)
- Khidmet Shikhaliev
- Department of Organic Chemistry, Faculty of Chemistry, Voronezh State University, 1 Universitetskaya sq., Voronezh 394018, Russia.
| | - Artem Sabynin
- Department of Organic Chemistry, Faculty of Chemistry, Voronezh State University, 1 Universitetskaya sq., Voronezh 394018, Russia.
| | - Valeri Sekirin
- Department of Organic Chemistry, Faculty of Chemistry, Voronezh State University, 1 Universitetskaya sq., Voronezh 394018, Russia.
| | - Michael Krysin
- Department of Organic Chemistry, Faculty of Chemistry, Voronezh State University, 1 Universitetskaya sq., Voronezh 394018, Russia.
| | - Fedor Zubkov
- Department of Organic Chemistry, Faculty of Physics and Mathematics and Natural Sciences, RUDN University, 6 Miklukho-Maklaya St., Moscow 117198, Russia.
| | - Kristina Yankina
- Department of Organic Chemistry, Faculty of Physics and Mathematics and Natural Sciences, RUDN University, 6 Miklukho-Maklaya St., Moscow 117198, Russia.
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18
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Arnold MA, Gerasyuto AI, Wang J, Du W, Gorske YJK, Arasu T, Baird J, Almstead NG, Narasimhan J, Peddi S, Ginzburg O, Lue SW, Hedrick J, Sheedy J, Lagaud G, Branstrom AA, Weetall M, Prasad JVNV, Karp GM. 4-Hydroxy-2-pyridones: Discovery and evaluation of a novel class of antibacterial agents targeting DNA synthesis. Bioorg Med Chem Lett 2017; 27:5014-5021. [PMID: 29032026 DOI: 10.1016/j.bmcl.2017.10.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/27/2017] [Accepted: 10/04/2017] [Indexed: 01/01/2023]
Abstract
The continued emergence of bacteria resistant to current standard of care antibiotics presents a rapidly growing threat to public health. New chemical entities (NCEs) to treat these serious infections are desperately needed. Herein we report the discovery, synthesis, SAR and in vivo efficacy of a novel series of 4-hydroxy-2-pyridones exhibiting activity against Gram-negative pathogens. Compound 1c, derived from the N-debenzylation of 1b, preferentially inhibits bacterial DNA synthesis as determined by standard macromolecular synthesis assays. The structural features of the 4-hydroxy-2-pyridone scaffold required for antibacterial activity were explored and compound 6q, identified through further optimization of the series, had an MIC90 value of 8 μg/mL against a panel of highly resistant strains of E. coli. In a murine septicemia model, compound 6q exhibited a PD50 of 8 mg/kg in mice infected with a lethal dose of E. coli. This novel series of 4-hydroxy-2-pyridones serves as an excellent starting point for the identification of NCEs treating Gram-negative infections.
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Affiliation(s)
- Michael A Arnold
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA.
| | - Aleksey I Gerasyuto
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Jiashi Wang
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Wu Du
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Yi Jin Kim Gorske
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Tamil Arasu
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - John Baird
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Neil G Almstead
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Jana Narasimhan
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Srinivasa Peddi
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Olya Ginzburg
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Stanley W Lue
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Jean Hedrick
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Josephine Sheedy
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Guy Lagaud
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Arthur A Branstrom
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Marla Weetall
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - J V N Vara Prasad
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
| | - Gary M Karp
- PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, NJ 07080, USA
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19
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Ye JS, Liu J, Ou HS, Wang LL. Degradation of ciprofloxacin by 280 nm ultraviolet-activated persulfate: Degradation pathway and intermediate impact on proteome of Escherichia coli. CHEMOSPHERE 2016; 165:311-319. [PMID: 27664520 DOI: 10.1016/j.chemosphere.2016.09.031] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/08/2016] [Accepted: 09/08/2016] [Indexed: 06/06/2023]
Abstract
In this study, the degradation of ciprofloxacin (CIP) was explored using ultraviolet activated persulfate (UV/PS) with 280 nm ultraviolet light-emitting diodes (UV-LEDs), and the toxicological assessment of degrading intermediates was performed using iTRAQ labeling quantitative proteomic technology. The quantitative mass spectrum results showed that 280 nm UV/PS treatment had a high transformation efficiency of CIP ([CIP] = 3 μM, [S2O82-] = 210 μM, apparent rate constants 0.2413 min-1). The high resolution mass spectrum analyses demonstrated that the primary intermediates included C15H16FN3O3 (m/z 306.1248) and C17H18FN3O4 (m/z 348.1354). The former one was formed by the cleavage of piperazine ring, while the later one was generated by the addition of a hydroxyl on the quinolone backbone. The toxicological assessment demonstrated that 56 and 110 proteins had significant up regulations and down regulations, respectively, in the Escherichia coli exposed to degraded CIP compared to untreated CIP. The majority of up-regulated proteins, such as GapA, SodC, were associated with primary metabolic process rather than responses to stress and toxic substance, inferring that the moderate UV/PS treatment can reduce the antibacterial activity of CIP by incomplete mineralization. Consequently, these results provided a novel insight into the application of UV-LED/PS treatment as a promising removal methodology for quinolones.
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Affiliation(s)
- Jin-Shao Ye
- School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China; Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek 94598, CA, USA
| | - Juan Liu
- School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Hua-Se Ou
- School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China.
| | - Lin-Lin Wang
- School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China; Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek 94598, CA, USA
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20
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Na SH, Jeon H, Kim YJ, Kwon HI, Selasi GN, Nicholas A, Yun CS, Lee SH, Lee JC. Antimicrobial activity of novel 4H-4-oxoquinolizine compounds against extensively drug-resistant Acinetobacter baumannii strains. Int J Antimicrob Agents 2016; 49:107-111. [PMID: 27908580 DOI: 10.1016/j.ijantimicag.2016.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 09/26/2016] [Accepted: 10/01/2016] [Indexed: 10/20/2022]
Abstract
The aim of this study was to screen lead compounds exhibiting potent in vitro antimicrobial activity against multidrug-resistant (MDR) Acinetobacter baumannii strains from a library of chemical compounds. In a high-throughput screening analysis of 7520 compounds representative of 340,000 small molecules, two 4H-4-oxoquinolizine compounds were the most active against A. baumannii ATCC 17978. Subsequent selection and analysis of 70 4H-4-oxoquinolizine compounds revealed that the top 7 compounds were extremely active against extensively drug-resistant (XDR) A. baumannii isolates. These compounds commonly carried a 1-cyclopropyl-7-fluoro-4-oxo-4H-quinolizine-3-carboxylic acid core structure but had different C-8 and/or C-9 moieties. Minimum inhibitory concentrations (MICs) of the seven compounds against fluoroquinolone-resistant A. baumannii isolates were found to be in the range of 0.02-1.70 µg/mL regardless of the mutation types in the quinolone resistance-determining region (QRDR) of GyrA and ParC. Cytotoxicity of the seven compounds was observed in HeLa and U937 cells at a concentration of 50 µg/mL, which was >32.5- to 119-fold higher than the MIC90 for A. baumannii isolates. In conclusion, novel 4H-4-oxoquinolizine compounds represent a promising scaffold on which to develop antimicrobial agents against drug-resistant A. baumannii strains.
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Affiliation(s)
- Seok Hyeon Na
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Hyejin Jeon
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Yoo Jeong Kim
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Hyo Il Kwon
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Gati Noble Selasi
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Asiimwe Nicholas
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Chang-Soo Yun
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea
| | - Sang Ho Lee
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea
| | - Je Chul Lee
- Department of Microbiology, Kyungpook National University School of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea.
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21
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Rostovskii NV, Sakharov PA, Novikov MS, Khlebnikov AF, Starova GL. Cu(I)–NHC-Catalyzed (2 + 3)-Annulation of Tetramic Acids with 2H-Azirines: Stereoselective Synthesis of Functionalized Hexahydropyrrolo[3,4-b]pyrroles. Org Lett 2015; 17:4148-51. [DOI: 10.1021/acs.orglett.5b01883] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nikolai V. Rostovskii
- Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Pavel A. Sakharov
- Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Mikhail S. Novikov
- Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Alexander F. Khlebnikov
- Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Galina L. Starova
- Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
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22
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Isomerizational and conformational study of 3-fluorophenylamino-2-acetyl propenenitrile (FPAAPN). J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Dorotíková S, Plevová K, Bučinský L, Malček M, Herich P, Kucková L, Bobeničová M, Šoralová S, Kožíšek J, Fronc M, Milata V, Dvoranová D. Conformational, spectroscopic, and molecular dynamics DFT study of precursors for new potential antibacterial fluoroquinolone drugs. J Phys Chem A 2014; 118:9540-51. [PMID: 25188903 DOI: 10.1021/jp506355f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Biological activity, functionality, and synthesis of (fluoro)quinolones is closely related to their precursors (for instance 3-fluoroanilinoethylene derivatives) (i.e., their functional groups, conformational behavior, and/or electronic structure). Herein, the theoretical study of 3-fluoroanilinoethylene derivatives is presented. Impact of substituents (acetyl, methyl ester, and ethyl ester) on the conformational analysis and the spectral behavior is investigated. The B3LYP/6-311++G** computational protocol is utilized. It is found that the intramolecular hydrogen bond N-H···O is responsible for the energetic preference of anti (a) conformer (anti position of 3-fluoroanilino group with respect to the C═C double bond). The Boltzmann ratios of the conformers are related to the differences of the particular dipole moments and/or their dependence on the solvent polarity. The studied acetyl, ethyl ester, and methyl ester substituted fluoroquinolone precursors prefer in the solvent either EZa, ZZa, or both conformers equally, respectively. In order to understand the degree of freedom of rotation of the trans ethyl ester group, B3LYP/6-311G** molecular dynamic simulations were carried out. Vibrational frequencies, electron transitions, as well as NMR spectra are analyzed with respect to conformational analysis, including the effect of the substituent. X-ray structures of the precursors are presented and compared with the results of the conformational analysis.
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Affiliation(s)
- Sandra Dorotíková
- Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava , Radlinského 9, SK-812 37 Bratislava, Slovak Republic
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24
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Yang M, Wang T, Cao S, He Z. Phosphine-catalyzed [4+1] annulation of 1,3-(aza)dienes with maleimides: highly efficient construction of azaspiro[4.4]nonenes. Chem Commun (Camb) 2014; 50:13506-9. [DOI: 10.1039/c4cc05624h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Yeh MCP, Liang CJ, Fan CW, Chiu WH, Lo JY. Synthesis of 2-azaspiro[4.6]undec-7-enes from N-tosyl-N-(3-arylpropargyl)-tethered 3-methylcyclohex-2-en-1-ols. J Org Chem 2012; 77:9707-17. [PMID: 23075326 DOI: 10.1021/jo301764g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The FeCl(3)-promoted synthesis of 2-azaspiro[4.6]undec-7-ene rings proceeds via ring expansion/cyclization/chlorination of N-tosyl-N-(3-arylpropargyl)-tethered 6-methylbicyclo[4.1.0]heptan-2-ols. This azaspirocyclic ring skeleton can also be obtained in one pot from the tert-butyldimethylsilyl-protected N-tosyl-N-(3-arylpropargyl)-tethered 3-methylcyclohex-2-en-1-ols and diethylzinc/diiodomethane.
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Affiliation(s)
- Ming-Chang P Yeh
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 11677, Taiwan, Republic of China.
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26
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Yeh MCP, Fang CW, Lin HH. Facile Synthesis of Azaspirocycles via Iron Trichloride-Promoted Cyclization/Chlorination of Cyclic 8-Aryl-5-aza-5-tosyl-2-en-7-yn-1-ols. Org Lett 2012; 14:1830-3. [DOI: 10.1021/ol300434m] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ming-Chang P. Yeh
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 11677, Taiwan, Republic of China
| | - Cheng-Wei Fang
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 11677, Taiwan, Republic of China
| | - Hsin-Hui Lin
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 11677, Taiwan, Republic of China
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27
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Lin MN, Wu SH, Yeh MCP. Trifluoromethanesulfonic Acid-Catalyzed Tandem Semi-Pinacol Rearrangement/Alkyne-Aldehyde Metathesis Reaction of Arylpropagylsulfonamide-Tethered 2,3-Epoxycyclohexan-1-ols to Spiropiperidines. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100576] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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28
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29
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Kim HY, Wiles JA, Wang Q, Pais GCG, Lucien E, Hashimoto A, Nelson DM, Thanassi JA, Podos SD, Deshpande M, Pucci MJ, Bradbury BJ. Exploration of the Activity of 7-Pyrrolidino-8-methoxyisothiazoloquinolones against Methicillin-Resistant Staphylococcus aureus (MRSA). J Med Chem 2011; 54:3268-82. [DOI: 10.1021/jm101604v] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ha Young Kim
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Jason A. Wiles
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Qiuping Wang
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Godwin C. G. Pais
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Edlaine Lucien
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Akihiro Hashimoto
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - David M. Nelson
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Jane A. Thanassi
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Steven D. Podos
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Milind Deshpande
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Michael J. Pucci
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
| | - Barton J. Bradbury
- Achillion Pharmaceuticals, Inc., 300 George Street, New Haven, Connecticut 06511, United States
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30
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Okano A, Tsukamoto K, Kosaka S, Maeda H, Oishi S, Tanaka T, Fujii N, Ohno H. Synthesis of Fused and Linked Bicyclic Nitrogen Heterocycles by Palladium-Catalyzed Domino Cyclization of Propargyl Bromides. Chemistry 2010; 16:8410-8. [DOI: 10.1002/chem.201000653] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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31
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32
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Jayachitra G, Anchoori RK, Rao BV. Stereoselective synthesis of (3R,4S)-3-amino-4-methyl pyrrolidine. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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Guazzelli G, Duffy LA, Procter DJ. A Samarium(II)-Mediated, Stereoselective Cyclization for the Synthesis of Azaspirocycles. Org Lett 2008; 10:4291-4. [DOI: 10.1021/ol8017209] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giuditta Guazzelli
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Lorna A. Duffy
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
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Poornachandran M, Raghunathan R. A novel diastereoselective 1,3-dipolar cycloaddition approach to cis-fused bispyrrolidines. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Poornachandran M, Raghunathan R. Synthesis of pyrrolo[3,4-b]pyrroles and perhydrothiazolo[3′,4′-2,3]pyrrolo[4,5-c]pyrroles. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.063] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Muraglia M, Franchini C, Corbo F, Scilimati A, Tortorella V, Sinicropi MS, De Luca A, De Bellis M, Camerino DC. Synthesis of beta-proline like derivatives and their evaluation as sodium channel blockers. J Heterocycl Chem 2007. [DOI: 10.1002/jhet.5570440519] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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37
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Foroumadi A, Mohammadhosseini N, Emami S, Letafat B, Faramarzi MA, Samadi N, Shafiee A. Synthesis and Antibacterial Activity of New 7-Piperazinyl-quinolones Containing a Functionalized 2-(Furan-3-yl)ethyl Moiety. Arch Pharm (Weinheim) 2007; 340:47-52. [PMID: 17206610 DOI: 10.1002/ardp.200600169] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A number of 7-piperazinylquinolones carrying a functionalized 2-(furan-3-yl)ethyl moiety attached to the piperazine ring have been synthesized and evaluated as antibacterial agents against a panel of Gram-positive and Gram-negative bacteria. Most of the synthesized compounds exhibited significant antibacterial activity, and this activity can be modulated through the nature of the functionality on ethyl spacer attached to piperazine ring and the type of side chain present at the N-1 position of quinolone ring.
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Affiliation(s)
- Alireza Foroumadi
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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38
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Huck BR, Llamas L, Robarge MJ, Dent TC, Song J, Hodnick WF, Crumrine C, Stricker-Krongrad A, Harrington J, Brunden KR, Bennani YL. The identification of pyrimidine-diazabicyclo[3.3.0]octane derivatives as 5-HT2C receptor agonists. Bioorg Med Chem Lett 2006; 16:2891-4. [PMID: 16546379 DOI: 10.1016/j.bmcl.2006.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Revised: 03/01/2006] [Accepted: 03/02/2006] [Indexed: 11/20/2022]
Abstract
The 5-HT2C receptor has been implicated in the regulation of appetite. As such, small molecule agonists to this receptor may serve as novel therapies to combat obesity. We describe here the identification, synthesis, and SAR of a 5-HT2C agonist from a unique pyrimidine-diazabicyclo[3.3.0]octane series. This compound displayed good potency at the 5-HT2C receptor, modest selectivity relative to other 5-HT2 receptors, and was efficacious in an acute feeding study in rats.
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Affiliation(s)
- Bayard R Huck
- Athersys, Inc., 3201 Carnegie Ave., Cleveland, OH 44115, USA.
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39
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Bedi PMS, Kumar V, Mahajan MP. Synthesis and biological activity of novel antibacterial quinazolines. Bioorg Med Chem Lett 2004; 14:5211-3. [PMID: 15380229 DOI: 10.1016/j.bmcl.2004.07.065] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2004] [Accepted: 07/21/2004] [Indexed: 11/21/2022]
Abstract
Novel quinazolines, having interesting antibacterial activity have been prepared, characterized and tested against a panel of susceptible and resistant Gram positive and Gram negative organisms.
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Affiliation(s)
- Preet M S Bedi
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar-143005, Punjab, India.
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40
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Choi DR, Shin JH, Yang J, Yoon SH, Jung YH. Syntheses and biological evaluation of new fluoroquinolone antibacterials containing chiral oxiimino pyrrolidine. Bioorg Med Chem Lett 2004; 14:1273-7. [PMID: 14980680 DOI: 10.1016/j.bmcl.2003.12.044] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2003] [Revised: 12/09/2003] [Accepted: 12/09/2003] [Indexed: 11/23/2022]
Abstract
The design and syntheses of new fluoroquinolone antibacterial agents having pyrrolidine ring at C-7 position are described. The pyrrolidine ring is optically active and possesses methyloxime functional group. Two of them have excellent in vitro antibacterial activities and pharmacokinetic profiles.
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Affiliation(s)
- Dong Rack Choi
- Central Research Laboratory, Dong-Wha Pharm. Ind. Co. Ltd, Anyang, Kyunggi 430-017, South Korea.
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41
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Zhang J, Blazecka PG, Davidson JG. First direct reductive amination of mucochloric acid: a simple and efficient method for preparing highly functionalized alpha,beta-unsaturated gamma-butyrolactams. Org Lett 2003; 5:553-6. [PMID: 12583767 DOI: 10.1021/ol0274662] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The first direct reductive amination of mucochloric acid (1) has been accomplished. Reaction of 1 with various alkyl, aryl, and benzylamines, followed by reduction in the same pot, provides an efficient method of obtaining N-benzyl-3,4-dichloro-1,5-dihydro-pyrrol-2-one and N-aryl (or alkyl)-3,4-dichloro-1,5-dihydro-pyrrol-2-ones.
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Affiliation(s)
- Ji Zhang
- Chemical Research and Development, Pfizer Global Research & Development, Ann Arbor Laboratories, Pfizer, Inc., 2800 Plymouth Road, Ann Arbor, Michigan 48105, USA.
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42
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Pedrosa R, Andrés C, de las Heras L, Nieto J. A novel synthesis of enantiopure octahydropyrrolo[3,4-b]pyrroles by intramolecular [3 + 2] dipolar cycloaddition on chiral perhydro-1,3-benzoxazines. Org Lett 2002; 4:2513-6. [PMID: 12123364 DOI: 10.1021/ol0261377] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Condensation of N-substituted glycines with chiral 3-allyl-2-formyl perhydro-1,3-benzoxazines forms an azomethine ylide that cyclizes to give octahydropyrrolo[3,4-b]pyrrole derivatives. The [3 + 2] dipolar cycloadditions are stereoespecific leading to a single diastereoisomer. The chemical yields are dependent on the reaction temperature and the presence or absence of a base.
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Affiliation(s)
- Rafael Pedrosa
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Dr. Mergelina s/n, 47011-Valladolid, Spain.
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43
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Affiliation(s)
- U Holzgrabe
- Institut für Pharmazie und Lebensmittelchemie Universität Würzburg Am Hubland 97074 Würzburg.
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Peterson LR. Quinolone molecular structure-activity relationships: what we have learned about improving antimicrobial activity. Clin Infect Dis 2001; 33 Suppl 3:S180-6. [PMID: 11524717 DOI: 10.1086/321846] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Recently, understanding of how molecular modifications of the core quinolone structure affect(s) antimicrobial agent activity has progressed rapidly. Three positions (2, 3, and 4) cannot be changed without a significant loss of biological activity. Furthermore, it appears that a cyclopropyl group is optimal at position 1. Substituents at positions 5 and 8 affect planar configuration, and either a methyl or methoxy appear optimal at these sites. Hydrogen and amino groups have been investigated as useful substituents at position 6, replacing the fluorine of the fluoroquinolones. Interestingly, in vitro activity enhancement observed with alterations at positions 5 and 6 is not always accompanied by improved in vivo action. For all these modifications, the substituents at positions 7 and 8 are critical for potent antimicrobial activity. Optimizing overall molecular configuration enhances the number of intracellular targets for antimicrobial action (R-8) and impedes the efficiency of efflux proteins (R-7) that diminish intracellular penetration.
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Affiliation(s)
- L R Peterson
- Microbiology Division, Department of Pathology, Northwestern University Medical School, Chicago, IL, USA.
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45
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Nicola T, Schwarzrock D, Keller M, Eberbach W. The synthesis of annulated 4-quinolizinones by two sequential anionic cyclizations. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00005-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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47
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Affiliation(s)
- A Persidis
- RHeoGene, 706 Forest Street, Charlottesville, VA 22903, USA.
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