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Buravchenko GI, Shchekotikhin AE. Quinoxaline 1,4-Dioxides: Advances in Chemistry and Chemotherapeutic Drug Development. Pharmaceuticals (Basel) 2023; 16:1174. [PMID: 37631089 PMCID: PMC10459860 DOI: 10.3390/ph16081174] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/08/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
N-Oxides of heterocyclic compounds are the focus of medical chemistry due to their diverse biological properties. The high reactivity and tendency to undergo various rearrangements have piqued the interest of synthetic chemists in heterocycles with N-oxide fragments. Quinoxaline 1,4-dioxides are an example of an important class of heterocyclic N-oxides, whose wide range of biological activity determines the prospects of their practical use in the development of drugs of various pharmaceutical groups. Derivatives from this series have found application in the clinic as antibacterial drugs and are used in agriculture. Quinoxaline 1,4-dioxides present a promising class for the development of new drugs targeting bacterial infections, oncological diseases, malaria, trypanosomiasis, leishmaniasis, and amoebiasis. The review considers the most important methods for the synthesis and key directions in the chemical modification of quinoxaline 1,4-dioxide derivatives, analyzes their biological properties, and evaluates the prospects for the practical application of the most interesting compounds.
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2
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Recent advances in transition metal-catalyzed reactions of chloroquinoxalines: Applications in bioorganic chemistry. Bioorg Chem 2022; 129:106195. [DOI: 10.1016/j.bioorg.2022.106195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 09/26/2022] [Accepted: 10/04/2022] [Indexed: 11/23/2022]
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3
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Yu X, Zhu W, Liu H, Liu Y, Li H, Han J, Duan G, Bai Z, Zhang P, Xia C. Practical chemoselective aromatic substitution: the synthesis of N-(4-halo-2-nitrophenyl)benzenesulfonamide through the efficient nitration and halogenation of N-phenylbenzenesulfonamide. Org Biomol Chem 2022; 20:5444-5451. [PMID: 35770678 DOI: 10.1039/d2ob01028c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A novel route involving the metal-promoted tandem nitration and halogenation of N-phenylbenzenesulfonamide to synthesize N-(4-halo-2-nitrophenyl)benzenesulfonamide derivatives has been developed. The method shows highly practical chemoselective and functional group compatibility. In addition, it employs insensitive and inexpensive Cu(NO3)2·3H2O, Fe(NO3)3·9H2O, and NH4NO3 as the nitration reagents, and it provides a direct approach for the preparation of 4-halo-2-nitroaniline, which is a crucial intermediate for the synthesis of benzimidazoles and quinoxaline derivatives.
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Affiliation(s)
- Xiao Yu
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Wenjing Zhu
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Hongyan Liu
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Yi Liu
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Hongshuang Li
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Junfen Han
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Guiyun Duan
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Zhushuang Bai
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China
| | - Chengcai Xia
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China.
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4
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Agrawal N, Bhardwaj A. An appraisal on synthetic and pharmaceutical perspectives of quinoxaline 1,4-di-N-oxide scaffold. Chem Biol Drug Des 2022; 100:346-363. [PMID: 35610776 DOI: 10.1111/cbdd.14094] [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: 02/07/2022] [Revised: 05/17/2022] [Accepted: 05/21/2022] [Indexed: 11/29/2022]
Abstract
Quinoxaline 1,4-di-N-oxides (QdNOs) exhibit multifaceted biological properties, wherein antimicrobial, anticancer, antitrypanosomal, and anti-inflammatory properties are included. Because of their various activities in clinical practice and research, they have a wide spectrum of uses and possibilities. QdNOs have received a significant amount of attention, and research into their medicinal chemistry is still a part of experimental investigation and analytical studies. In this review, QdNOs are classified depending on their actions, which include antibacterial and anti-mycobacterial, anticancer or antitumor, antimalarial, antifungal, and other activities. In a conclusion, it's important to base the development of novel synthetic techniques and the design of new QdNO derivatives on the most up-to-date knowledge gleaned from recent research. With the summarised structure-activity relationship of fascinating QdNOs, this review aims to provide insights into the developments in the chemistry and biological activity of QdNO derivatives.
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Affiliation(s)
- Neetu Agrawal
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Aditya Bhardwaj
- Institute of Pharmaceutical Research, GLA University, Mathura, India
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5
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Ahamed JI, Ramkumaar G, Kamalarajan P, Narendran K, Valan M, Sundareswaran T, Sundaravadivel T, Venkatadri B, Bharathi S. Novel quinoxaline derivatives of 2, 3-diphenylquinoxaline-6-carbaldehyde and 4, 4′-(6-methylquinoxaline-2,3-diyl)bis(N,N-diphenylaniline): Synthesis, structural, DFT-computational, molecular docking, antibacterial, antioxidant, and anticancer studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Li S, Tan J, Li X. Synthesis of Dispiro[indeno[1,2-b]quinoxaline] Derivatives via 1,3-Dipolar Cycloaddition Reactions. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021100237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Alizadeh A, Sanjari E, Roosta A, Halvagar MR. Synthesis of polycyclic N-heterocyclic compounds via one-pot three-component cyclization strategy. Mol Divers 2021; 25:2063-2072. [PMID: 32385742 DOI: 10.1007/s11030-020-10097-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/23/2020] [Indexed: 10/24/2022]
Abstract
Reported herein is an unprecedented and sequential three-component synthetic strategy for the preparation of polycyclic N-heterocyclic compounds. This synthetic protocol enabled the preparation of a series of novel nitrogen-containing pentacyclic compound under convenient conditions in excellent yields and short reaction time. The synthesized products were characterized by IR, 1H NMR, 13C NMR and mass spectra. Furthermore, the definitive structure of target compounds was confirmed by X-ray analysis.
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Affiliation(s)
- Abdolali Alizadeh
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Elham Sanjari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Atefeh Roosta
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Mohammad Reza Halvagar
- Department of Inorganic Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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8
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Design, synthesis, antiproliferative evaluation, and molecular docking study of new quinoxaline derivatives as apoptotic inducers and EGFR inhibitors. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130317] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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9
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Recent Updates on the Synthesis of Bioactive Quinoxaline-Containing Sulfonamides. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125702] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Quinoxaline is a privileged pharmacophore that has broad-spectrum applications in the fields of medicine, pharmacology and pharmaceutics. Similarly, the sulfonamide moiety is of considerable interest in medicinal chemistry, as it exhibits a wide range of pharmacological activities. Therefore, the therapeutic potential and biomedical applications of quinoxalines have been enhanced by incorporation of the sulfonamide group into their chemical framework. The present review surveyed the literature on the preparation, biological activities and structure-activity relationship (SAR) of quinoxaline sulfonamide derivatives due to their broad range of biomedical activities, such as diuretic, antibacterial, antifungal, neuropharmacological, antileishmanial, anti-inflammatory, anti-tumor and anticancer action. The current biological diagnostic findings in this literature review suggest that quinoxaline-linked sulfonamide hybrids are capable of being established as lead compounds; modifications on quinoxaline sulfonamide derivatives may give rise to advanced therapeutic agents against a wide variety of diseases.
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10
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Quinoxaline 1,4-di-N-oxides: a review of the importance of their structure in the development of drugs against infectious diseases and cancer. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02731-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Ismail MMF, Abdulwahab HG, Elnagdi MH. Design, synthesis, and in vitroanticancer screening of novel pyrazolinyl‐pyrazole/1, 2, 3‐triazole hybrids. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Magda M. F. Ismail
- Pharmaceutical Chemistry Department, Faculty of Pharmacy (Girls) Al‐Azhar University Cairo Egypt
| | - Hanan G. Abdulwahab
- Pharmaceutical Chemistry Department, Faculty of Pharmacy (Girls) Al‐Azhar University Cairo Egypt
| | - Mohamed H. Elnagdi
- Department of Chemistry, Faculty of Science University of Kuwait Safat Kuwait
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12
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Abbaspour S, Keivanloo A, Bakherad M, Sepehri S. Design, Synthesis, Antibacterial Evaluation and Molecular Docking Study of New 3‐Aminoquinoxaline‐2‐alkynyl Carboxylate Esters. ChemistrySelect 2020. [DOI: 10.1002/slct.202001841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sima Abbaspour
- Faculty of ChemistryShahrood University of Technology Shahrood 36199-95161 Iran
| | - Ali Keivanloo
- Faculty of ChemistryShahrood University of Technology Shahrood 36199-95161 Iran
| | - Mohammad Bakherad
- Faculty of ChemistryShahrood University of Technology Shahrood 36199-95161 Iran
| | - Saghi Sepehri
- Department of Medicinal Chemistry, School of PharmacyArdabil University of Medical Sciences Ardabil 56189-53142 Iran
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13
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Synthesis, characterization of some pyrazine derivatives as anti-cancer agents: In vitro and in Silico approaches. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128013] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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14
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Hamama WS, Waly SM, Said SB, Zoorob HH. Highlights on the chemistry of 2-amino-3-cyano-quinoxaline 1, 4-dioxides and their derivatives. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2017.1342843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wafaa S. Hamama
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura City, Egypt
| | - Sara M. Waly
- Chemistry Department, Faculty of Science, Damietta University, Damietta City, Egypt
| | - Samy B. Said
- Chemistry Department, Faculty of Science, Damietta University, Damietta City, Egypt
| | - Hanafi H. Zoorob
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura City, Egypt
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15
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3‐(α‐Chlorobenzyl)quinoxalin‐2(1
H
)‐ones as Versatile Reagents for the Synthesis of 3‐Benzylquinoxalin‐2(1
H
)‐ones and Thiazolo[3,4‐
a
]quinoxalin‐4(5
H
)‐ones. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Chemistry and pharmacological diversity of quinoxaline motifs as anticancer agents. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2019; 69:177-196. [PMID: 31259731 DOI: 10.2478/acph-2019-0013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/26/2018] [Indexed: 01/19/2023]
Abstract
Surpassing heart diseases, cancer is taking the lead as the deadliest disease because of its fast rate of spreading in all parts of the world. Tireless commitment to searching for novel therapeutic medicines is a worthwhile adventure in synthetic chemistry because of the drug resistance predicament and regular outbreak of new diseases due to abnormal cell growth and proliferation. Medicinal chemistry researchers and pharmacists have unveiled quinoxaline templates as precursors of importance and valuable intermediates in drug discovery because they have been established to possess diverse pharmacological potentials. Hence, this review highlights the current versatile routes to accessing functionalized quinoxaline motifs and harnessing their documented therapeutic potentials for anticancer drug development.
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Alizadeh A, Ghasemzadeh H, Roosta A, Halvagar MR. An Efficient Ultrasound Promoted Three‐Component and Regioselective Synthesis of Indenoquinoxaline Compounds Containing Pyrrolopyrimidine Skeleton. ChemistrySelect 2019. [DOI: 10.1002/slct.201900639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Abdolali Alizadeh
- Department of ChemistryTarbiat Modares University P.O. Box 14115–175, Tehran Iran
| | - Hossein Ghasemzadeh
- Department of ChemistryTarbiat Modares University P.O. Box 14115–175, Tehran Iran
| | - Atefeh Roosta
- Department of ChemistryTarbiat Modares University P.O. Box 14115–175, Tehran Iran
| | - Mohammad Reza Halvagar
- Chemistry & Chemical Engineering Research Center of Iran (CCERCI), Pajohesh Blvd, 17th Km of Tehran-Karaj Highway 1496813151, Tehran Iran
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18
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Shen X, Gates KS. Enzyme-Activated Generation of Reactive Oxygen Species from Heterocyclic N-Oxides under Aerobic and Anaerobic Conditions and Its Relevance to Hypoxia-Selective Prodrugs. Chem Res Toxicol 2019; 32:348-361. [PMID: 30817135 DOI: 10.1021/acs.chemrestox.9b00036] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Enzymatic one-electron reduction of heterocyclic N-oxides can lead to the intracellular generation of reactive oxygen species via several different chemical pathways. These reactions may be relevant to hypoxia-selective anticancer drugs, antimicrobial agents, and unwanted toxicity of heterocylic nitrogen compounds.
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19
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Sharma A, Arambula JF, Koo S, Kumar R, Singh H, Sessler JL, Kim JS. Hypoxia-targeted drug delivery. Chem Soc Rev 2019; 48:771-813. [PMID: 30575832 PMCID: PMC6361706 DOI: 10.1039/c8cs00304a] [Citation(s) in RCA: 311] [Impact Index Per Article: 62.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hypoxia is a state of low oxygen tension found in numerous solid tumours. It is typically associated with abnormal vasculature, which results in a reduced supply of oxygen and nutrients, as well as impaired delivery of drugs. The hypoxic nature of tumours often leads to the development of localized heterogeneous environments characterized by variable oxygen concentrations, relatively low pH, and increased levels of reactive oxygen species (ROS). The hypoxic heterogeneity promotes tumour invasiveness, metastasis, angiogenesis, and an increase in multidrug-resistant proteins. These factors decrease the therapeutic efficacy of anticancer drugs and can provide a barrier to advancing drug leads beyond the early stages of preclinical development. This review highlights various hypoxia-targeted and activated design strategies for the formulation of drugs or prodrugs and their mechanism of action for tumour diagnosis and treatment.
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Affiliation(s)
- Amit Sharma
- Department of Chemistry, Korea University, Seoul, 02841, Korea.
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20
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Reduction Potential Predictions for Some 3-Aryl-Quinoxaline-2-Carbonitrile 1,4-Di-N-Oxide Derivatives with Known Anti-Tumor Properties. COMPUTATION 2019. [DOI: 10.3390/computation7010006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The ability for DFT: B3LYP calculations using the 6-31g and lanl2dz basis sets to predict the electrochemical properties of twenty (20) 3-aryl-quinoxaline-2-carbonitrile 1,4-di-N-oxide derivatives with varying degrees of cytotoxic activity in dimethylformamide (DMF) was investigated. There was a strong correlation for the first reduction and moderate-to-low correlation of the second reduction of the diazine ring between the computational and the experimental data, with the exception of the derivative containing the nitro functionality. The four (4) nitro group derivatives are clear outliers in the overall data sets and the derivative E4 is ill-behaved. The remaining three (3) derivatives containing the nitro groups had a strong correlation between the computational and experimental data; however, the computational data falls substantially outside of the expected range.
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21
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Design, synthesis and biological evaluation of quinoxaline N-propionic and O-propionic hydrazide derivatives as antibacterial and antifungal agents. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2235-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Hamama WS, Waly SM, Said SB, Zoorob HH. Annulation ofo-Aminoquinoxaline-1,4-dioxidenitrile with Ketonic Compounds Under Friedländer-type Cyclocondensation and its Biological Evaluation. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wafaa S. Hamama
- Chemistry Department, Faculty of Science; Mansoura University; Mansoura 35516 Egypt
| | - Sara M. Waly
- Chemistry Department, Faculty of Science; Damietta University; Damietta Egypt
| | - Samy B. Said
- Chemistry Department, Faculty of Science; Damietta University; Damietta Egypt
| | - Hanafi H. Zoorob
- Chemistry Department, Faculty of Science; Mansoura University; Mansoura 35516 Egypt
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Freire Franco MS, de Paula MH, Glowacka PC, Fumagalli F, Clososki GC, da Silva Emery F. Palladium-catalyzed C–H alkenylation of quinoxaline N-oxide enabled by a mono-N-protected amino acid. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Zhao X, Xia C, Wang X, Wang H, Xin M, Yu L, Liang Y. Cyclophilin J PPIase Inhibitors Derived from 2,3-Quinoxaline-6 Amine Exhibit Antitumor Activity. Front Pharmacol 2018. [PMID: 29520233 PMCID: PMC5826973 DOI: 10.3389/fphar.2018.00126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Cyclophilin J (CyPJ), also called peptidylprolyl isomerase like 3, has been identified as a novel member of the cyclophilin family. Our previous research has resolved the three-dimensional structure of CyPJ and demonstrated the peptidylprolyl cis–trans isomerase (PPIase) activity of CyPJ, which can be inhibited by the common immunosuppressive drug cyclosporine A (CsA). Importantly, CyPJ is upregulated in hepatocellular carcinoma (HCC) and promotes tumor growth; CyPJ inhibition by CsA- or siRNA-based knockdown results in a remarkable suppression of HCC. These findings suggest that CyPJ may be a potential therapeutic target for HCC, and discovery of relevant inhibitors may facilitate development of a novel CyPJ-based targeting therapy. However, apart from the common inhibitor CsA, CyPJ has yet to be investigated as a target for cancer therapy. Here, we report structure-based identification of novel small molecule non-peptidic CyPJ inhibitors and their potential as antitumor lead compounds. Based on computer-aided virtual screening, in silico, and subsequently surface plasmon resonance analysis, 19 potential inhibitors of CyPJ were identified and selected for further evaluation of PPIase CyPJ inhibition in vitro. Thirteen out of 19 compounds exhibited notable inhibition against PPIase activity. Among them, the compound ZX-J-19, with a quinoxaline nucleus, showed potential for tumor inhibition; thus, we selected it for further structure–activity optimization. A total of 22 chemical derivatives with 2,3-substituted quinoxaline-6-amine modifications were designed and successfully synthesized. At least 2 out of the 22 derivatives, such as ZX-J-19j and ZX-J-19l, demonstrated remarkable inhibition of tumor cell growth, comparable to CsA but much stronger than 5-fluorouracil. These results indicate that these two small molecules represent novel potential lead compounds for CyPJ-based antitumor drug development.
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Affiliation(s)
- Xuemei Zhao
- College of Pharmacy, Taishan Medical University, Tai'an, China
| | - Chengcai Xia
- College of Pharmacy, Taishan Medical University, Tai'an, China
| | - Xiaodan Wang
- College of Pharmacy, Taishan Medical University, Tai'an, China
| | - Hao Wang
- College of Pharmacy, Taishan Medical University, Tai'an, China
| | - Ming Xin
- College of Pharmacy, Taishan Medical University, Tai'an, China
| | - Long Yu
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Yulong Liang
- College of Pharmacy, Taishan Medical University, Tai'an, China.,Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
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25
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One-pot palladium-catalyzed synthesis of functionalized 10H-pyrido[1,2-a]quinoxalin-10-ones under copper-free conditions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Voltammetric Study of Some 3-Aryl-quinoxaline-2-carbonitrile 1,4-di-N-oxide Derivatives with Anti-Tumor Activities. Molecules 2017; 22:molecules22091442. [PMID: 28858261 PMCID: PMC6151727 DOI: 10.3390/molecules22091442] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 08/28/2017] [Accepted: 08/29/2017] [Indexed: 12/27/2022] Open
Abstract
The electrochemical properties of twenty 3-aryl-quinoxaline-2-carbonitrile 1,4-di-N-oxide derivatives with varying degrees of cytotoxic activity were investigated in dimethylformamide (DMF) using cyclic voltammetry and first derivative cyclic voltammetry. With one exception, the first reduction of these compounds was found to be reversible or quasireversible and is attributed to reduction of the N-oxide moiety to form a radical anion. The second reduction of the diazine ring was found to be irreversible. Compounds containing a nitro group on the 3-phenyl ring also exhibited a reduction process that may be attributed to that group. There was good correlation between molecular structure and reduction potential, with reduction being facilitated by an enhanced net positive charge at the electroactive site created by electron withdrawing substituents. Additionally, the reduction potential was calculated using two common basis sets, 6-31g and lanl2dz, for five of the test molecules. There was a strong correlation between the computational data and the experimental data, with the exception of the derivative containing the nitro functionality. No relationship between the experimentally measured reduction potentials and reported cytotoxic activities was evident upon comparison of the data.
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27
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Hazarika D, Phukan P. Metal free synthesis of quinoxalines from alkynes via a cascade process using TsNBr2. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.056] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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28
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Ameri Rad J, Jarrahpour A, Ersanlı CC, Atioğlu Z, Akkurt M, Turos E. Synthesis of some novel indeno[1,2-b]quinoxalin spiro-β-lactam conjugates. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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29
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Alizadeh A, Moafi L. Simple access to spirooxadiazole compounds containing a quinoxaline moiety using a nitrile imine intermediate generated in situ. HETEROCYCL COMMUN 2017. [DOI: 10.1515/hc-2017-0084] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA convenient method for the synthesis of spiro[indeno[1,2-
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Synthesis, 3D-QSAR analysis and biological evaluation of quinoxaline 1,4-di-N-oxide derivatives as antituberculosis agents. Bioorg Med Chem Lett 2016; 26:4146-53. [PMID: 27426298 DOI: 10.1016/j.bmcl.2016.01.066] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 01/11/2016] [Accepted: 01/22/2016] [Indexed: 01/08/2023]
Abstract
A series of quinoxaline 1,4-di-N-oxide derivatives variously substituted at C-2 position were synthesized and evaluated for in vitro antimycobacterial activity. Seventeen compounds exhibited potential activity (MIC ⩽6.25μg/mL) against Mycobacterium tuberculosis (H37Rv), in particular the compounds 3d and 3j having an MIC value of 0.39μg/mL. None of the compounds exhibited cytotoxicity when using an MTT assay in VERO cells. To further investigate the structure-activity relationship, CoMFA (q(2)=0.507, r(2)=0.923) and CoMSIA (q(2)=0.665, r(2)=0.977) models were performed on the basis of antimycobacterial activity data. The 3D-QSAR study of these compounds can provide useful information for further rational design of novel quinoxaline 1,4-di-N-oxides for treatment of tuberculosis.
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Synthesis, Characterization and Biological Evaluation of Some Quinoxaline Derivatives: A Promising and Potent New Class of Antitumor and Antimicrobial Agents. Molecules 2015; 20:19805-22. [PMID: 26540036 PMCID: PMC6332220 DOI: 10.3390/molecules201119655] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 10/22/2015] [Accepted: 10/26/2015] [Indexed: 01/27/2023] Open
Abstract
In continuation of our endeavor towards the development of potent and effective anticancer and antimicrobial agents; the present work deals with the synthesis of some novel tetrazolo[1,5-a]quinoxalines, N-pyrazoloquinoxalines, the corresponding Schiff bases, 1,2,4-triazinoquinoxalines and 1,2,4-triazoloquinoxalines. These compounds were synthesized via the reaction of the key intermediate hydrazinoquinoxalines with various reagents and evaluated for anticancer and antimicrobial activity. The results indicated that tetrazolo[1,5-a]quinoxaline derivatives showed the best result, with the highest inhibitory effects towards the three tested tumor cell lines, which were higher than that of the reference doxorubicin and these compounds were non-cytotoxic to normal cells (IC50 values > 100 μg/mL). Also, most of synthesized compounds exhibited the highest degrees of inhibition against the tested strains of Gram positive and negative bacteria, so tetrazolo[1,5-a]quinoxaline derivatives show dual activity as anticancer and antimicrobial agents.
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Molecular modeling studies and synthesis of novel quinoxaline derivatives with potential anticancer activity as inhibitors of c-Met kinase. Bioorg Med Chem 2015; 23:6560-72. [PMID: 26420384 DOI: 10.1016/j.bmc.2015.09.023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 08/29/2015] [Accepted: 09/14/2015] [Indexed: 11/23/2022]
Abstract
In an effort to develop potent anti-cancer agents, we have synthesized some substituted quinoxaline derivatives. Reaction of 6-bromo-3-methylquinoxalin-2(1H)-one 1 with aromatic aldehydes furnished the styryl derivatives 2a-e. Alkylation of 1 with ethyl chloroacetate produced the N-alkyl derivatives 3. Hydrazinolysis of the ester derivative 3 with hydrazine hydrate afforded the hydrazide derivative 4. In addition, chlorination of 1 with phosphorus oxychloride afforded the 2-chloro derivative 5 which was used as a key intermediate for the synthesis of substituted quinoxaline derivatives 6-8, N-pyrazole derivative 9, tetrazolo[1,5-a]quinoxaline derivative 10 and Schiff base derivatives 13, 15 via reaction with several nucleophiles reagents. Docking methodologies were used to predict their binding conformation to explain the differences of their tested biological activities. All the tested compounds were screened in vitro for their cytotoxic effect on three tumor cell lines. Some new quinoxaline derivatives were studied as inhibitors of c-Met kinase, a receptor associated with high tumor grade and poor prognosis in a number of human cancers. Compounds 2e, 4, 7a, 12a, 12b and 13 showed the highest binding affinity with CDOCKER energy score, while showed the lowest IC50 values against three types of cancer cell lines. It is worth to mention that, compounds 2e, 7a, 12b and 13 showed comparable inhibition activity to the reference drug, while compounds 4 and 12a showed a more potent inhibition activity than Doxorubicin.
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Wang X, Zhang H, Huang L, Pan Y, Li J, Chen D, Cheng G, Hao H, Tao Y, Liu Z, Yuan Z. Deoxidation rates play a critical role in DNA damage mediated by important synthetic drugs, quinoxaline 1,4-dioxides. Chem Res Toxicol 2015; 28:470-81. [PMID: 25626015 DOI: 10.1021/tx5004326] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Quinoxaline 1,4-dioxides (QdNOs) are synthetic agents with a wide range of biological activities. However, the mechanism of DNA damage mediated by QdNOs is far from clear. Five classical QdNOs, quinocetone (QCT), mequindox (MEQ), carbadox (CBX), olaquindox (OLA), and cyadox (CYA), were used to investigate the genotoxicity of QdNOs. The deoxidation rate of QdNOs was presumed to play a role in their genotoxicity. Deoxidation rates of QdNOs in both rat and pig liver microsomes were investigated using LC/MS-IT/TOF, and their relative quantification was achieved with HPLC. To reveal the relationships between the deoxidation rate and genotoxicity, cell damage, oxidative stress, and DNA damage were detected. Under low oxygen conditions, the rank order of the desoxy and bidesoxy rates in rat and pig liver microsomes was QCT < CBX < MEQ < OLA < CYA and QCT < MEQ < CBX < OLA < CYA, respectively. Only desoxy-quinoxalines were detected under aerobic conditions. The concentrations of deoxidized metabolites under low oxygen conditions were at least 6 times higher than those under aerobic conditions. In rats, porcine primary hepatocytes, and HepG2 cells, oxidative stress indices and DNA damage showed inverse relationships with the deoxidation rate, indicating that the deoxidation rate of QdNOs, especially bidesoxy rates, might play a critical role in mediating their ability to promote DNA damage. These results indicated that faster deoxidation of QdNOs results in lower DNA-damage-induced toxicity. Our results shed new light on the prevention of DNA damage mediated by QdNOs and help to understand the relationships among the chemical structures, metabolism, and DNA damage of QdNOs.
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Affiliation(s)
- Xu Wang
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, ‡MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University , Wuhan, Hubei 430070, China
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Satish G, Ilangovan A. I2/Cu-mediated self-sorting domino reaction of aryl β-ketoesters into symmetrical 2-carboalkoxy-1,4-enediones: application to synthesis of pyrazine, β-carboline and quinoxalines. RSC Adv 2015. [DOI: 10.1039/c5ra08030d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A self-sorting domino reaction of aryl β-ketoesters into symmetrical 1,4-enediones is reported by an I2/Cu system.
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Affiliation(s)
- Gandhesiri Satish
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli – 620 024
- India
| | - Andivelu Ilangovan
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli – 620 024
- India
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Present status of quinoxaline motifs: Excellent pathfinders in therapeutic medicine. Eur J Med Chem 2014; 85:688-715. [DOI: 10.1016/j.ejmech.2014.08.034] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 08/07/2014] [Accepted: 08/08/2014] [Indexed: 11/18/2022]
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Design and syntheses of some new quinoxaline derivatives containing pyrazoline residue as potential antimicrobial agents. Med Chem Res 2014. [DOI: 10.1007/s00044-014-0976-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Gers CF, Nordmann J, Kumru C, Frank W, Müller TJJ. Solvatochromic Fluorescent 2-Substituted 3-Ethynyl Quinoxalines: Four-Component Synthesis, Photophysical Properties, and Electronic Structure. J Org Chem 2014; 79:3296-310. [DOI: 10.1021/jo4025978] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Charlotte F. Gers
- Institut für Organische Chemie und Makromolekulare Chemie and ‡Institut für
Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Universitätstrasse 1, D-40225 Düsseldorf, Germany
| | - Jan Nordmann
- Institut für Organische Chemie und Makromolekulare Chemie and ‡Institut für
Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Universitätstrasse 1, D-40225 Düsseldorf, Germany
| | - Ceyda Kumru
- Institut für Organische Chemie und Makromolekulare Chemie and ‡Institut für
Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Universitätstrasse 1, D-40225 Düsseldorf, Germany
| | - Walter Frank
- Institut für Organische Chemie und Makromolekulare Chemie and ‡Institut für
Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Universitätstrasse 1, D-40225 Düsseldorf, Germany
| | - Thomas J. J. Müller
- Institut für Organische Chemie und Makromolekulare Chemie and ‡Institut für
Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Universitätstrasse 1, D-40225 Düsseldorf, Germany
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Khan MS, Munawar MA, Ashraf M, Alam U, Ata A, Asiri AM, Kousar S, Khan MA. Synthesis of novel indenoquinoxaline derivatives as potent α-glucosidase inhibitors. Bioorg Med Chem 2013; 22:1195-200. [PMID: 24398385 DOI: 10.1016/j.bmc.2013.12.024] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 12/05/2013] [Accepted: 12/07/2013] [Indexed: 11/19/2022]
Abstract
A series of new N-(11H-Indeno[1,2-b]quinoxalin-11-ylidene)benzohydrazide derivatives (3a-3p) were synthesized and evaluated for their α-glucosidase inhibitory activity. The synthesized compounds 3d, 3f, 3g, 3k, 3n, 3p and 4 showed significant α-glucosidase inhibitory activity as compared to acrabose, a standard drug used to treat type II diabetes. Structures of the synthesized compounds were determined by using FT-IR, (1)H NMR, (13)C NMR, mass spectrometry and elemental analysis techniques.
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Affiliation(s)
- Madiha Sahar Khan
- Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | | | - Mohammad Ashraf
- Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Umber Alam
- Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Athar Ata
- Department of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg MB R3B 2E9, Canada
| | - Abdullah Mohamed Asiri
- Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia
| | - Samina Kousar
- Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Misbahul Ain Khan
- Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan; Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
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Chen CY, Hu WP, Liu MC, Yan PC, Wang JJ, Chung MI. Efficient synthesis of quinoxalines with hypervalent iodine as a catalyst. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Mohil R, Kumar D, Mor S. Synthesis and Antimicrobial Activity of Some 1,3-Disubstituted Indeno[1,2-c]pyrazoles. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1081] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rajni Mohil
- Department of Chemistry; Guru Jambheshwar University of Science and Technology; Hisar-125001 Haryana India
| | - Devinder Kumar
- Department of Chemistry; Guru Jambheshwar University of Science and Technology; Hisar-125001 Haryana India
| | - Satbir Mor
- Department of Chemistry; Guru Jambheshwar University of Science and Technology; Hisar-125001 Haryana India
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Maichrowski J, Hübner EG, Kaufmann DE. Palladium-Catalyzed Cross-Coupling of 2-ChloroquinoxalineN-Oxides with Arylboronic Acids. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300707] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Barea C, Pabón A, Pérez-Silanes S, Galiano S, Gonzalez G, Monge A, Deharo E, Aldana I. New amide derivatives of quinoxaline 1,4-di-N-oxide with leishmanicidal and antiplasmodial activities. Molecules 2013; 18:4718-27. [PMID: 23609622 PMCID: PMC6269706 DOI: 10.3390/molecules18044718] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/11/2013] [Accepted: 04/18/2013] [Indexed: 11/16/2022] Open
Abstract
Malaria and leishmaniasis are two of the World's most important tropical parasitic diseases. Continuing with our efforts to identify new compounds active against malaria and leishmaniasis, twelve new 1,4-di-N-oxide quinoxaline derivatives were synthesized and evaluated for their in vitro antimalarial and antileishmanial activity against Plasmodium falciparum FCR-3 strain, Leishmania infantum and Leishmania amazonensis. Their toxicity against VERO cells (normal monkey kidney cells) was also assessed. The results obtained indicate that a cyclopentyl derivative had the best antiplasmodial activity (2.9 µM), while a cyclohexyl derivative (2.5 µM) showed the best activity against L. amazonensis, and a 3-chloropropyl derivative (0.7 µM) showed the best results against L. infantum. All these compounds also have a Cl substituent in the R⁷ position.
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Affiliation(s)
- Carlos Barea
- Unidad de Investigación y Desarrollo de Nuevos Medicamentos, Centro de Investigación en Farmacobiología Aplicada-CIFA, Universidad de Navarra, Pamplona 31080, Spain.
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New amide derivatives of quinoxaline 1,4-di-N-oxide with leishmanicidal and antiplasmodial activities. MOLECULES (BASEL, SWITZERLAND) 2013. [PMID: 23609622 DOI: 10.3390/molecules18044718.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Malaria and leishmaniasis are two of the World's most important tropical parasitic diseases. Continuing with our efforts to identify new compounds active against malaria and leishmaniasis, twelve new 1,4-di-N-oxide quinoxaline derivatives were synthesized and evaluated for their in vitro antimalarial and antileishmanial activity against Plasmodium falciparum FCR-3 strain, Leishmania infantum and Leishmania amazonensis. Their toxicity against VERO cells (normal monkey kidney cells) was also assessed. The results obtained indicate that a cyclopentyl derivative had the best antiplasmodial activity (2.9 µM), while a cyclohexyl derivative (2.5 µM) showed the best activity against L. amazonensis, and a 3-chloropropyl derivative (0.7 µM) showed the best results against L. infantum. All these compounds also have a Cl substituent in the R⁷ position.
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44
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Synthesis of 2-(3-methyl-2-oxoquinoxalin-1(2H)-yl)acetamide-based azetidinone derivatives as potent antibacterial and antifungal agents. J CHEM SCI 2013. [DOI: 10.1007/s12039-012-0354-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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46
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Dahbi S, Bisseret P. Near Room Temperature Cross-Coupling Reactions of Arene Boronic Acids with a Quinoxaline 1,4-Dioxide Benzylsulfanyl Derivative. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200433] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Viveiros MLF, Freitas VLS, Vale N, Gomes JRB, Gomes P, Silva MDMCR. Synthesis and thermochemical study of quinoxaline-N-oxides: enthalpies of dissociation of the N-O bond. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1932] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Miguel L. F. Viveiros
- Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências; Universidade do Porto; R. do Campo Alegre, 687; P-4169-007; Porto; Portugal
| | - Vera L. S. Freitas
- Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências; Universidade do Porto; R. do Campo Alegre, 687; P-4169-007; Porto; Portugal
| | - Nuno Vale
- Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências; Universidade do Porto; R. do Campo Alegre, 687; P-4169-007; Porto; Portugal
| | | | - Paula Gomes
- Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências; Universidade do Porto; R. do Campo Alegre, 687; P-4169-007; Porto; Portugal
| | - Maria D. M. C. Ribeiro Silva
- Centro de Investigação em Química, Departamento de Química e Bioquímica, Faculdade de Ciências; Universidade do Porto; R. do Campo Alegre, 687; P-4169-007; Porto; Portugal
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48
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Affiliation(s)
- A. Makhloufi
- a Faculté des sciences de l'ingénieur, Département de génie des procédés , Laboratoire des matériaux polymériques multiphasiques, Université Ferhat Abbas , Sétif , Algeria
| | - M. Baitiche
- a Faculté des sciences de l'ingénieur, Département de génie des procédés , Laboratoire des matériaux polymériques multiphasiques, Université Ferhat Abbas , Sétif , Algeria
| | - M. Merbah
- a Faculté des sciences de l'ingénieur, Département de génie des procédés , Laboratoire des matériaux polymériques multiphasiques, Université Ferhat Abbas , Sétif , Algeria
| | - D. Benachour
- a Faculté des sciences de l'ingénieur, Département de génie des procédés , Laboratoire des matériaux polymériques multiphasiques, Université Ferhat Abbas , Sétif , Algeria
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Kumar S, Khan S, Alam O, Azim R, Khurana A, Shaquiquzzaman M, Siddiqui N, Ahsan W. Synthesis of Tetrazolo[1,5-a]quinoxaline based Azetidinones & Thiazolidinones as Potent Antibacterial & Antifungal Agents. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.7.2260] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Fadda AA, Abdelrazek FM, Fouda AM. Studies with aza-heterocyclic N-oxides: Synthesis of some new aromatic N-oxide derivatives. ACTA ACUST UNITED AC 2011. [DOI: 10.5155/eurjchem.2.1.51-57.249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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