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Xia W, Anwar A, Wang L, Cao Z, Li B, Nie K, Zhou C, Zhang Y, Han G, Jiang W, Ben H, Zhao T. Microwave-assisted solid-state pretreatment for fabrication of hemp fibres using ethanolamine at low temperature. Carbohydr Polym 2024; 332:121906. [PMID: 38431392 DOI: 10.1016/j.carbpol.2024.121906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/22/2024] [Accepted: 01/31/2024] [Indexed: 03/05/2024]
Abstract
Conventional methods faced challenges in pretreating natural cellulose fibres due to their high energy consumption and large wastewater drainage. This research devised an efficient solid-state pretreatment method for pretreating hemp fibres using ethanolamine (ETA) assisted by microwave (MW) heating. This method produced a notable removal rate of lignin (85.4 %) with the highest cellulose content (83.0 %) at a high solid content (30 %) and low temperature (70 °C). Both FT-IR and XRD analyses indicated that the pretreatment did not alter the structure of cellulose within the hemp fibres but increased crystallinity as the CrI increased from 84 % in raw hemp fibre to 89 % in pretreated fibre. As a result, it produced hemp fibres with impressive fineness (4.6 dtex) and breaking strength (3.81 cN/dtex), meeting the requirement of textile fibre. In addition, an improvement in glucose concentration (15.6 %) was observed in enzymatic hydrolysis of the MW pretreated hemp fibres compared to the fibres pretreated without MW. Furthermore, the FT-IR and NMR data confirmed that the amination of lignin occurred even at low temperature, which contributed to the high lignin removal rate. Thus, this study presents a potentially effective energy-saving, and environmentally sustainable solid-state method for pretreating hemp fibres.
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Affiliation(s)
- Wenying Xia
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Almas Anwar
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Lingyu Wang
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Zhihao Cao
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Boya Li
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Kai Nie
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China; College of Textile, Donghua University, Shanghai 201620, China
| | - Chengfeng Zhou
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Yuanming Zhang
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Guangting Han
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Wei Jiang
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China
| | - Haoxi Ben
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China.
| | - Tao Zhao
- College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China.
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2
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Nasr T, Aboshanab AM, Mpekoulis G, Drakopoulos A, Vassilaki N, Zoidis G, Abouzid KAM, Zaghary W. Novel 6-Aminoquinazolinone Derivatives as Potential Cross GT1-4 HCV NS5B Inhibitors. Viruses 2022; 14:v14122767. [PMID: 36560772 PMCID: PMC9782603 DOI: 10.3390/v14122767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/04/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Chronic hepatitis C virus (HCV) infections are a worldwide medical problem responsible for diverse types of liver diseases. The NS5B polymerase enzyme has become a very interesting target for the development of anti-HCV drugs owing to its fundamental role in viral replication. Here we report the synthesis of a novel series of 1-substituted phenyl-4(1H)-quinazolinone and 2-methyl-1-substituted phenyl-4(1H)-quinazolinone derivatives and evaluate their activity against HCV in HCV subgenomic replicon assays. The biological data revealed that compound 11a showed the highest activity against HCV GT1b at a micromolar concentration (EC50 = 0.984 µM) followed by compound 11b (EC50 = 1.38 µM). Both compounds 11a and 11b had high selectivity indices (SI = CC50/EC50), 160.71 and 71.75, respectively, which make them very interesting candidates for further development of more potent and selective anti-HCV agents.
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Affiliation(s)
- Tamer Nasr
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo 11795, Egypt
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, MTI University, Cairo 12055, Egypt
- Correspondence: (T.N.); (G.Z.)
| | - Ahmed M. Aboshanab
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo 11795, Egypt
| | - George Mpekoulis
- Molecular Virology Laboratory, Hellenic Pasteur Institute, 11521 Athens, Greece
| | - Antonios Drakopoulos
- Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Niki Vassilaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, 11521 Athens, Greece
| | - Grigoris Zoidis
- Department of Pharmacy, Division of Pharmaceutical Chemistry, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
- Correspondence: (T.N.); (G.Z.)
| | - Khaled A. M. Abouzid
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt
| | - Wafaa Zaghary
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo 11795, Egypt
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3
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Gu Z, Xue F, Yu J, Ju S. Preparation of N-Aryl Anthranilic Acid Drugs by Modified Ullmann Coupling Reaction in Ionic Liquids. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428022060124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Khan D, Parveen I, Shaily, Sharma S. Design, Synthesis and Characterization of Aurone Based α,β‐unsaturated Carbonyl‐Amino Ligands and their Application in Microwave Assisted Suzuki, Heck and Buchwald Reactions. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Danish Khan
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Iram Parveen
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
| | - Shaily
- Department of Chemistry D. B. S. (P.G.) College Dehradun 248001 Uttarakhand India
| | - Saurabh Sharma
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247 667 Uttarakhand India
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5
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Prasad S, Rodene DD, Burkholder MB, Donald KJ, Gupton BF. Substituent Effects and the Energetics of Noncatalyzed Aryl Halide Aminations: A Theoretical Investigation. ACS OMEGA 2021; 6:27216-27224. [PMID: 34693141 PMCID: PMC8529657 DOI: 10.1021/acsomega.1c03934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
We report the influence of substituents and physical conditions on activation energies for the noncatalyzed amination (C-N cross-coupling reactions) of aryl halides. We uncover a significant correlation between the barrier heights of the C-N bond formation and Hammett σ parameters-a formal measure of the electron-withdrawing or -donating ability of substituents on the aryl halides. Our results indicate that such correlations are useful predictive tools for the amination of aryl halides over a wide range of substituent types. From 54 cases studied (six substituents occupying specific positions relative to halogen atoms), the 2-COOHPhI + NH2 n Pr amination reaction is predicted to possess the lowest noncatalyzed activation free energy (135.6 kJ mol-1) using the B3LYP method. The lower barriers for the 2-COOHPhX (for X = Cl, Br, and I) compounds are shown to originate from collusion between steric and electronic effects-specifically, the momentary formation of a hydrogen bond between an oxygen site on the ortho-COOH and the lone pair of the entering amine. Internal reaction coordinate (IRC) path calculations afforded us these and other key insights into the nature of the reactions. The control exerted by substituents on the arrangement of the transition state structure, as well as the sensitivity of the reaction barriers to temperature and solvent polarity, are discussed. These results offer new perspectives from which to assess the nature of the C-N bond formation and suggest new avenues for future exploration, especially in progress toward the metal-free amination of aryl compounds.
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Affiliation(s)
- Supreeth Prasad
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Dylan D. Rodene
- Department
of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Michael B. Burkholder
- Department
of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Kelling J. Donald
- Department
of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - B. Frank Gupton
- Department
of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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6
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Abstract
C-N coupling reactions were found to be attractive among researchers owing to
the importance of C-N bond formation in heterocyclic synthesis. Hence C-N bond formation
via amination reaction with the assistance of microwave radiations gained significant
attraction recently. Microwave-assisted reactions are greener, faster and generally efficient
compared to the conventional thermal reactions offering better purity of the product with
enhancement in the yield. It was surprisingly revealed that several new advancements in
amination reactions were highly influenced by this greener technology. This first review on
microwave-assisted amination reaction focuses on the novel amination strategies that
emerged with the help of microwave methodology, and covers literature up to 2019.
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Affiliation(s)
- Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
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7
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Singh N, Madhav H, Yadav S, Jaiswar G. Impact of vanadium‐, sulfur‐, and dysprosium‐doped zinc oxide nanoparticles on various properties of PVDF/functionalized‐PMMA blend nanocomposites: Structural, optical, and morphological studies. J Appl Polym Sci 2018. [DOI: 10.1002/app.47116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- N. Singh
- Department of ChemistryDr. Bhimrao Ambedkar University Agra India
- Materials Research Laboratory, Department of ChemistryJamia Millia Islamia (A Central University) New Delhi India
| | - H. Madhav
- Department of ChemistryDr. Bhimrao Ambedkar University Agra India
- Drug Design and Synthesis Laboratory, Department of ChemistryJamia Millia Islamia (A Central University) New Delhi India
| | - S. Yadav
- Department of ChemistryAgra College Agra India
| | - G. Jaiswar
- Department of ChemistryDr. Bhimrao Ambedkar University Agra India
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8
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Rafehi M, Neumann A, Baqi Y, Malik EM, Wiese M, Namasivayam V, Müller CE. Molecular Recognition of Agonists and Antagonists by the Nucleotide-Activated G Protein-Coupled P2Y 2 Receptor. J Med Chem 2017; 60:8425-8440. [PMID: 28938069 DOI: 10.1021/acs.jmedchem.7b00854] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A homology model of the nucleotide-activated P2Y2R was created based on the X-ray structures of the P2Y1 receptor. Docking studies were performed, and receptor mutants were created to probe the identified binding interactions. Mutation of residues predicted to interact with the ribose (Arg110) and the phosphates of the nucleotide agonists (Arg265, Arg292) or that contribute indirectly to binding (Tyr288) abolished activity. The Y114F, R194A, and F261A mutations led to inactivity of diadenosine tetraphosphate and to a reduced response of UTP. Significant reduction in agonist potency was observed for all other receptor mutants (Phe111, His184, Ser193, Phe261, Tyr268, Tyr269) predicted to be involved in agonist recognition. An ionic lock between Asp185 and Arg292 that is probably involved in receptor activation interacts with the phosphate groups. The antagonist AR-C118925 and anthraquinones likely bind to the orthosteric site. The updated homology models will be useful for virtual screening and drug design.
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Affiliation(s)
- Muhammad Rafehi
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Sciences Bonn (PSB), Pharmaceutical Chemistry I, University of Bonn , 53121 Bonn, Germany
| | - Alexander Neumann
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Sciences Bonn (PSB), Pharmaceutical Chemistry I, University of Bonn , 53121 Bonn, Germany
| | - Younis Baqi
- Department of Chemistry, Faculty of Science, Sultan Qaboos University , PO Box 36, Postal Code 123, Muscat, Oman
| | - Enas M Malik
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Sciences Bonn (PSB), Pharmaceutical Chemistry I, University of Bonn , 53121 Bonn, Germany
| | - Michael Wiese
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry II, University of Bonn , 53121 Bonn, Germany
| | - Vigneshwaran Namasivayam
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Sciences Bonn (PSB), Pharmaceutical Chemistry I, University of Bonn , 53121 Bonn, Germany.,PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry II, University of Bonn , 53121 Bonn, Germany
| | - Christa E Müller
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Sciences Bonn (PSB), Pharmaceutical Chemistry I, University of Bonn , 53121 Bonn, Germany
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9
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Pant PL, Shankarling GS. Deep Eutectic Solvent/Lipase: Two Environmentally Benign and Recyclable Media for Efficient Synthesis of N-Aryl Amines. Catal Letters 2017. [DOI: 10.1007/s10562-017-2046-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Phakhodee W, Wangngae S, Pattarawarapan M. Metal-free amidation of carboxylic acids with tertiary amines. RSC Adv 2016. [DOI: 10.1039/c6ra12801g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Combination of Ph3P and I2 with an appropriate reagent addition sequence could enable effective amidation of carboxylic acids with tertiary amines under mild conditions.
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Affiliation(s)
- Wong Phakhodee
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Sirilak Wangngae
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Mookda Pattarawarapan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
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11
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Sengupta T, Khamarui S, Samanta S, Maiti DK. Synthetically useful noncatalytic strategy: a stereocontrolled rapid cyclization of a three component system to afford hexahydropyrrolizines. Chem Commun (Camb) 2013; 49:9962-4. [DOI: 10.1039/c3cc45820b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Baqi Y, Müller CE. Efficient and mild deamination procedure for 1-aminoanthraquinones yielding a diverse library of novel derivatives with potential biological activity. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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13
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Lan C, Xia ZN, Li ZH, Liang RH. Metal Catalyst-Free Amination of 2-chloro-5-nitrobenzoic Acid in Superheated Water. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13524831206251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of N-arylanthranilic acid derivatives were synthesised by amination of 2-chloro-5-nitrobenzoic acid with various arylamine in superheated water with potassium carbonate as base. Good yields were achieved within 2-3 h at 150-190 °C. The results indicated that this metal catalyst-free method is a simple, environmentally-friendly and efficient synthesis of N-phenylanthranilic acid derivatives. Furthermore, it will work with an alkylamine and phenol.
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Affiliation(s)
- Cong Lan
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Zhi-Ning Xia
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Zheng-Hua Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Rong-Hui Liang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
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14
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An alternative synthesis of pyrimido[4,5-b]quinoline-4-ones via metal-free amination in water and Vilsmeier–Haack cyclization. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.10.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Raj MR, Arun K, Ashokkumar M, Anandan S. Ultrasound-assisted Ullmann Reaction of Alkyl and Aromatic Amines with Substituted Benzoic Acids using Copper Catalyst. ORG PREP PROCED INT 2012. [DOI: 10.1080/00304948.2012.676822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Michael Ruby Raj
- a Department of Chemistry , National Institute of Technology , Tiruchirappalli , 620 015 , India
| | - Krishnaraj Arun
- a Department of Chemistry , National Institute of Technology , Tiruchirappalli , 620 015 , India
| | | | - Sambandam Anandan
- a Department of Chemistry , National Institute of Technology , Tiruchirappalli , 620 015 , India
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16
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Baqi Y, Hausmann R, Rosefort C, Rettinger J, Schmalzing G, Müller CE. Discovery of potent competitive antagonists and positive modulators of the P2X2 receptor. J Med Chem 2011; 54:817-30. [PMID: 21207957 DOI: 10.1021/jm1012193] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Evaluation and optimization of anthraquinone derivatives related to Reactive Blue 2 at P2X2 receptors yielded the first potent and selective P2X2 receptor antagonists. The compounds were tested for inhibition of ATP (10 μM) mediated currents in Xenopus oocytes expressing the rat P2X2 receptor. The most potent antagonists were sodium 1-amino-4-[3-(4,6-dichloro[1,3,5]triazine-2-ylamino)phenylamino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate (63, PSB-10211, IC(50) 86 nM) and disodium 1-amino-4-[3-(4,6-dichloro[1,3,5]triazine-2-ylamino)-4-sulfophenylamino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate (57, PSB-1011, IC(50) 79 nM). Compound 57 exhibited a competitive mechanism of action (pA(2) 7.49). It was >100-fold selective versus P2X4, P2X7, and several investigated P2Y receptor subtypes (P2Y(2,4,6,12)); selectivity versus P2X1 and P2X3 receptors was moderate (>5-fold). Compound 57 was >13-fold more potent at the homomeric P2X2 than at the heteromeric P2X2/3 receptor. Several anthraquinone derivatives were found to act as positive modulators of ATP effects at P2X2 receptors, for example, sodium 1-amino-4-(3-phenoxyphenylamino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate (51, PSB-10129, EC(50) 489 nM), which led to about a 3-fold increase in the ATP-elicited current.
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Affiliation(s)
- Younis Baqi
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, Pharmaceutical Sciences Bonn (PSB), University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
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17
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Synthesis of alkyl- and aryl-amino-substituted anthraquinone derivatives by microwave-assisted copper(0)-catalyzed Ullmann coupling reactions. Nat Protoc 2010; 5:945-53. [DOI: 10.1038/nprot.2010.63] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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18
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Baqi Y, Lee SY, Iqbal J, Ripphausen P, Lehr A, Scheiff AB, Zimmermann H, Bajorath J, Müller CE. Development of potent and selective inhibitors of ecto-5'-nucleotidase based on an anthraquinone scaffold. J Med Chem 2010; 53:2076-86. [PMID: 20146483 DOI: 10.1021/jm901851t] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
ecto-5'-Nucleotidase (eN, CD73) plays a major role in controlling extracellular adenosine levels. eN inhibitors have potential as novel drugs, for example, for the treatment of cancer. In the present study, we synthesized and investigated a series of 55 anthraquinone derivatives as potential inhibitors of eN, 11 of which are novel compounds and another 11 of which had previously been described but have now been synthesized by an improved method. We identified several potent inhibitors of rat eN. The most potent compounds were 1-amino-4-[4-fluoro-2-carboxyphenylamino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate (45, PSB-0952, K(i) = 260 nM) and 1-amino-4-[2-anthracenylamino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate (52, PSB-0963, 150 nM), with 52 being the most potent eN inhibitor described to date. Selected compounds were further characterized and found to exhibit a competitive mechanism of inhibition. Investigations of ecto-nucleoside triphosphate diphosphohydrolases (NTPDases) and the P2Y receptor subtypes P2Y(2), P2Y(4), P2Y(6), and P2Y(12) showed that compound 45 exhibited the highest degree of selectivity (>150-fold).
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Affiliation(s)
- Younis Baqi
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, Pharmaceutical Sciences Bonn, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
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19
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Zeng L, Fu H, Qiao R, Jiang Y, Zhao Y. Efficient Copper-Catalyzed Synthesis ofN-Alkylanthranilic Acidsviaanortho-Substituent Effect of the Carboxyl Group of 2-Halobenzoic Acids at Room Temperature. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900065] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Balaban MC, Chappaz-Gillot C, Canard G, Fuhr O, Roussel C, Balaban TS. Metal catalyst-free amination of meso-bromoporphyrins: an entry to supramolecular porphyrinoid frameworks. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.02.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Kappe CO, Dallinger D. Controlled microwave heating in modern organic synthesis: highlights from the 2004–2008 literature. Mol Divers 2009; 13:71-193. [PMID: 19381851 DOI: 10.1007/s11030-009-9138-8] [Citation(s) in RCA: 292] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 02/27/2009] [Indexed: 01/25/2023]
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22
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Combinatorial synthesis of anilinoanthraquinone derivatives and evaluation as non-nucleotide-derived P2Y2 receptor antagonists. Bioorg Med Chem Lett 2007; 18:223-7. [PMID: 18006312 DOI: 10.1016/j.bmcl.2007.10.082] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Revised: 10/23/2007] [Accepted: 10/25/2007] [Indexed: 11/21/2022]
Abstract
A library of anilinoanthraquinone derivatives was synthesized by parallel Ullmann coupling reaction of bromaminic acid with aniline derivatives in solution using a compact parallel synthesizer. The products were purified by HPLC and evaluated as antagonists at mouse and human P2Y2 receptors. 4-Phenylamino-substituted 1-amino-2-sulfoanthraquinones, for example, 1-amino-4-(2-methoxyphenyl)-2-sulfoanthraquinone (PSB-716), were potent P2Y2 antagonists with IC50 values in the low micromolar range.
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