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Martínez‐Crespo L, Vitórica‐Yrezábal IJ, Whitehead GFS, Webb SJ. Chemically Fueled Communication Along a Scaffolded Nanoscale Array of Squaramides. Angew Chem Int Ed Engl 2023; 62:e202307841. [PMID: 37429824 PMCID: PMC10952809 DOI: 10.1002/anie.202307841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
Relaying conformational change over several nanometers is central to the function of allosterically regulated proteins. Replicating this mechanism artificially would provide important communication tools, but requires nanometer-sized molecules that reversibly switch between defined shapes in response to signaling molecules. In this work, 1.8 nm long rigid rod oligo(phenylene-ethynylene)s are scaffolds for switchable multi-squaramide hydrogen-bond relays. Each relay can adopt either a parallel or an antiparallel orientation relative to the scaffold; the preferred orientation is dictated by a director group at one end. An amine director responded to proton signals, with acid-base cycles producing multiple reversible changes in relay orientation that were reported by a terminal NH, which is 1.8 nm distant. Moreover, a chemical fuel acted as a dissipative signal. As the fuel was consumed, the relay reverted to its original orientation, illustrating how information from out-of-equilibrium molecular signals can be communicated to a distant site.
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Affiliation(s)
- Luis Martínez‐Crespo
- Department of ChemistryUniversity of Manchester Oxford RoadManchesterM13 9PLUK
- Manchester Institute of BiotechnologyUniversity of Manchester131 Princess StreetManchesterM1 7DNUK
| | | | | | - Simon J. Webb
- Department of ChemistryUniversity of Manchester Oxford RoadManchesterM13 9PLUK
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2
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Synthesis of Novel Ferrocene-Benzofuran Hybrids via Palladium- and Copper-Catalyzed Reactions. INORGANICS 2022. [DOI: 10.3390/inorganics10110205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The combination of the ferrocene skeleton with pharmacophores often leads to molecules with interesting biological properties. Five ferrocene-benzofuran hybrids of different structures were synthesized by transition metal catalyzed reactions. The efficiency of both homogeneous and heterogeneous catalytic methods was tested. The products were characterized using 1H, 13C NMR and FTIR spectroscopy, HRMS and cyclic voltammetry. The structure of one of the new compounds was also proved with X-ray crystallography. The new hybrids showed moderate cytotoxicity on MCF-7 and MDA-MB-231 cell lines. It is remarkable that the less curable MDA-MB-231 cell line was more sensitive to treatment with three ferrocene derivatives.
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3
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Cao Y, Huang Y, Blakemore PR. Synthesis of Thioalkynes by Desilylative Sonogashira Crosscoupling of Aryl Iodides and 1‐Methylthio‐2‐(trimethylsilyl)ethyne. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yang Cao
- Oregon State University Chemistry UNITED STATES
| | - Yang Huang
- Oregon State University Chemistry UNITED STATES
| | - Paul R. Blakemore
- Oregon State University Department of Chemistry 153 Gilbert Hall 97331-4003 Corvallis UNITED STATES
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4
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Naher M, Gorenskaia E, Moggach SA, Becker T, Nichols RJ, Lambert CJ, Low PJ. A one-pot synthesis of oligo(arylene–ethynylene)-molecular wires and their use in the further verification of molecular circuit laws†. Aust J Chem 2022. [DOI: 10.1071/ch21235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Davison EK, Shepperson CE, Wilson ZE, Brimble MA. Scalable Biomimetic Syntheses of Paeciloketal B, 1- epi-Paeciloketal B, and Bysspectin A. JOURNAL OF NATURAL PRODUCTS 2021; 84:2345-2351. [PMID: 34351758 DOI: 10.1021/acs.jnatprod.1c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The first total synthesis of the benzannulated 5,5-spiroketal natural products paeciloketal B and 1-epi-paeciloketal B has been achieved in 10 linear steps employing a biomimetic spiroketalization. This approach also furnished the related natural product bysspectin A from the same putative biosynthetic precursor as the paeciloketals. Alternatively, bysspectin A could be accessed in only six steps using an improved route. This scalable and efficient synthesis affords insight into the biosynthesis of these natural products in nature.
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Affiliation(s)
- Emma K Davison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
- School of Biological Sciences, University of Auckland, 3 Symonds Street, Auckland 1010, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Caitlin E Shepperson
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Zoe E Wilson
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
- School of Biological Sciences, University of Auckland, 3 Symonds Street, Auckland 1010, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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6
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Varga B, Tóth BL, Béke F, Csenki JT, Kotschy A, Novák Z. Synthesis and Photochemical Application of Hydrofluoroolefin (HFO) Based Fluoroalkyl Building Block. Org Lett 2021; 23:4925-4929. [PMID: 34097412 DOI: 10.1021/acs.orglett.1c01709] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel fluoroalkyl iodide was synthesized on multigram scale from refrigerant gas HFO-1234yf as cheap industrial starting material in a simple, solvent-free, and easily scalable process. We demonstrated its applicability in a metal-free photocatalytic ATRA reaction to synthesize valuable fluoroalkylated vinyl iodides and proved the straightforward transformability of the products in cross-coupling chemistry to obtain conjugated systems.
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Affiliation(s)
- Bálint Varga
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
| | - Balázs L Tóth
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
| | - Ferenc Béke
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
| | - János T Csenki
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
| | - András Kotschy
- Servier Research Institute of Medicinal Chemistry, Záhony u. 7.H-1031 Budapest, Hungary
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
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7
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Chen J, Zhang X, Wu J, Wang R, Lei C, An Y. Facile one-pot synthesis of diarylacetylenes from arylaldehydes via an addition-double elimination process. Org Biomol Chem 2021; 19:4701-4705. [PMID: 33988213 DOI: 10.1039/d1ob00627d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical one-pot protocol has been developed to synthesize diarylacetylenes from arylaldehydes by treatment with 1-(arylmethyl)benzotriazoles and LiN(SiMe3)2. The reaction proceeded through imine formation, Mannich-type addition and double elimination to deliver products in up to 99% yields with broad substrate scope. In addition, gram-scale synthesis of 1-bromo-4-(phenylethynyl)benzene has been demonstrated.
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Affiliation(s)
- Jianyang Chen
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Xuan Zhang
- School of Intelligent Manufacturing Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China
| | - Jiajun Wu
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Rui Wang
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Chunlin Lei
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Yanan An
- College of Pharmacy, Chongqing University of Arts and Sciences, Yongchuan 402160, China
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Kitamura Y, Murata Y, Iwai M, Matsumura M, Yasuike S. Palladium-Catalyzed C-H Arylation of Benzofurans with Triarylantimony Difluorides for the Synthesis of 2-Arylbenzofurans. Molecules 2020; 26:E97. [PMID: 33379315 PMCID: PMC7795347 DOI: 10.3390/molecules26010097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/23/2020] [Accepted: 12/25/2020] [Indexed: 11/23/2022] Open
Abstract
Pd-catalyzed regioselective C-H arylation is a useful tool for the chemical modification of aromatic heterocycles and 2-arylbenzofuran derivatives are of interest as biologically active substances. Herein, the reaction of triarylantimony difluorides with benzofurans under aerobic conditions in 1,2-DCE, using 5 mol% Pd (OAc)2 and 2 eq. of CuCl2 at 80 °C, produced a variety of 2-arylbenzofurans in moderate-to-high yields. The reaction is sensitive to the electronic nature of the substituents on the benzene ring of the triarylantimony difluorides: an electron-donating group showed higher reactivity than an electron-withdrawing group. Single crystal X-ray analysis of tri(p-methylphenyl) antimony difluoride revealed that the central antimony atom exhibits trigonal bipyramidal geometry.
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Affiliation(s)
| | | | | | | | - Shuji Yasuike
- School of Pharmaceutical Sciences, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan; (Y.K.); (Y.M.); (M.I.); (M.M.)
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9
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Ramirez Y Medina IM, Rohdenburg M, Lork E, Staubitz A. Aggregation induced emission - emissive stannoles in the solid state. Chem Commun (Camb) 2020; 56:9775-9778. [PMID: 32748898 DOI: 10.1039/d0cc04525j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The optoelectronic and structural properties of six stannoles are reported. All revealed extremely weak emission in solution at 295 K, but intensive fluorescence in the solid state with quantum yields (ΦF) of up to 11.1% in the crystal, and of up to 24.4% (ΦF) in the thin film.
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Affiliation(s)
- Isabel-Maria Ramirez Y Medina
- University of Bremen, Institute for Organic and Analytical Chemistry, Leobener Str. 7, 28359 Bremen, Germany. and University of Bremen, MAPEX Center for Materials and Processes, Bibliothekstr. 1, 28359 Bremen, Germany
| | - Markus Rohdenburg
- University of Bremen, Institute for Applied and Physical Chemistry, Leobener Str. 5, 28359 Bremen, Germany
| | - Enno Lork
- University of Bremen, Institute for Inorganic Chemistry and Crystallography, Leobener Str. 7, 28359 Bremen, Germany and University of Bremen, MAPEX Center for Materials and Processes, Bibliothekstr. 1, 28359 Bremen, Germany
| | - Anne Staubitz
- University of Bremen, Institute for Organic and Analytical Chemistry, Leobener Str. 7, 28359 Bremen, Germany. and University of Bremen, MAPEX Center for Materials and Processes, Bibliothekstr. 1, 28359 Bremen, Germany
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10
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Liu S, Yin S, Zhang Z, Liu H, Liu M, Han B. Synthesis of Bis(trimethylsilyl)acetylene (BTMSA) by Direct Reaction of CaC
2
with
N
‐(trimethylsilyl)imidazole. ChemistrySelect 2020. [DOI: 10.1002/slct.202000255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuaishuai Liu
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Colloid and Interface and Chemical Thermodynamics.Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemistry and Chemical EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Shuai Yin
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Colloid and Interface and Chemical Thermodynamics.Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
| | - Zhaofu Zhang
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Colloid and Interface and Chemical Thermodynamics.Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
| | - Huizhen Liu
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Colloid and Interface and Chemical Thermodynamics.Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemistry and Chemical EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Mingyang Liu
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Colloid and Interface and Chemical Thermodynamics.Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemistry and Chemical EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 China
| | - Buxing Han
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Colloid and Interface and Chemical Thermodynamics.Institute of ChemistryChinese Academy of Sciences Beijing 100190 China
- School of Chemistry and Chemical EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 China
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11
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Lasányi D, Tolnai GL. Copper-Catalyzed Ring Opening of [1.1.1]Propellane with Alkynes: Synthesis of Exocyclic Allenic Cyclobutanes. Org Lett 2019; 21:10057-10062. [DOI: 10.1021/acs.orglett.9b03999] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Dániel Lasányi
- Institute of Chemistry, Eotvos Lorand University, Pazmany P. setany. 1/a, 1117 Budapest, Hungary
| | - Gergely L. Tolnai
- Institute of Chemistry, Eotvos Lorand University, Pazmany P. setany. 1/a, 1117 Budapest, Hungary
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12
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Capani JS, Cochran JE, Liang JC. CsF-Mediated in Situ Desilylation of TMS-Alkynes for Sonogashira Reaction. J Org Chem 2019; 84:9378-9384. [PMID: 31194913 DOI: 10.1021/acs.joc.9b01307] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A practical and mild set of conditions for the Sonogashira reaction utilizing CsF-mediated in situ TMS-alkyne desilylation followed by Sonogashira coupling has been developed for the synthesis of a variety of alkynyl benzenes and heteroarenes in good to excellent yields. This methodology demonstrates excellent functional group tolerance and simple purification, which allows large-scale industrial applications. This one-pot protocol enables a high-yielding Sonogashira coupling with volatile alkynes by avoiding challenging isolation of free alkynes.
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Affiliation(s)
- Joseph S Capani
- Vertex Pharmaceuticals Incorporated , 50 Northern Avenue , Boston , Massachusetts 02210 , United States
| | - John E Cochran
- Vertex Pharmaceuticals Incorporated , 50 Northern Avenue , Boston , Massachusetts 02210 , United States
| | - Jianglin Colin Liang
- Vertex Pharmaceuticals Incorporated , 50 Northern Avenue , Boston , Massachusetts 02210 , United States
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13
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Zhao Z, Zhang Z, Wang H, Li X, Zhang M. Multicomponent Porphyrin-Based Tetragonal Prismatic Metallacages and their Photophysical Properties. Isr J Chem 2019; 59:299-305. [PMID: 33833470 DOI: 10.1002/ijch.201800173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Multicomponent coordination-driven self-assembly has proved to be a convenient approach to prepare advanced supramolecular coordination complexes (SCCs), especially for those with three-dimensional structures. Herein, we report the preparation of three tetragonal prismatic cages via the self-assembly of Pt(PEt3)2(OTf)2, three different linear dipyridyl ligands and porphyrin-based sodium benzoate ligands. Due to the efficient charge separation in the coordination process of Pt(PEt3)2(OTf)2 with pyridine and carboxylic acid and the directionality of metal-coordination bonds, these cages were prepared in high isolated yields (more than 90%). The absorption and emission properties as well as the singlet oxygen quantum yields of these cages were also studied, showing their potential applications as contrast agents for bio-imaging and photosensitizers for photodynamic therapy.
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Affiliation(s)
- Zhengqing Zhao
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Zeyuan Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Heng Wang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Mingming Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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de Oliveira IM, Darbem MP, Esteves CHA, Pimenta DC, Zukerman-Schpector J, Stefani HA, Manarin F. Ytterbium-catalyzed formal [4+2] cycloaddition: Synthesis of chalcogen-quinolines 3-unsubstituted. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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