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Ochiai B, Yashima M, Soegawa K, Matsumura Y. Biodegradable epoxy thermosetting system with high adhesiveness based on glycidate-acid anhydride curing. ACS Macro Lett 2023; 12:54-58. [PMID: 36566385 DOI: 10.1021/acsmacrolett.2c00626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Biodegradable epoxy thermosets were developed by curing through copolymerization of a diglycidate monomer, a bifunctional epoxide bearing ester linkages, with cyclic acid anhydrides as a biosafe thermosetting system. The cured products of the glycidate exhibit high adhesiveness, identical to analogous cured products of conventional glycidyl ethers. Even an inert cycloolefin polymer and polyimide can be adhered. The cured products of the glycidate can be hydrolytically and biologically degraded. The biodegradation of the glycidate thermoset in compost completely proceeded within 2 weeks.
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Affiliation(s)
- Bungo Ochiai
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa, Yamagata, 992-8510, Japan
| | - Miharu Yashima
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa, Yamagata, 992-8510, Japan
| | - Katsutaka Soegawa
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa, Yamagata, 992-8510, Japan
| | - Yoshimasa Matsumura
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa, Yamagata, 992-8510, Japan
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Ochiai B, Soegawa K. Glycidate as a High-Strength Epoxy Adhesive Curable with Amine under Ambient Conditions. Polymers (Basel) 2022; 14:polym14050957. [PMID: 35267778 PMCID: PMC8912669 DOI: 10.3390/polym14050957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 12/10/2022] Open
Abstract
This paper reports that glycidates bearing epoxy moieties with adjacent ester can be cured with diethylenetriamine (DETA) under mild conditions and exhibit high adhesiveness. Curing of bifunctional glycidates with DETA gave cross-linked products. The curing started at a lower temperature (7 °C) than the analogous glycidyl ether (27 °C), while the rate of the curing was slower due to the lower activation energy (Ea = 57 kJ/g) and exothermicity (ΔH = 58 J/g) as confirmed by DSC analysis. The curing system of neopentyl glycol diglycidate and DETA effectively adhered aluminum plates by curing at 25 °C, and the strength was more than five times higher than the curing with analogous glycidyl ether. The higher adhesive strength under curing of ambient conditions and facile preparation of monomers are the significant advantages of this curing.
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Ivanovich RA, Quartus JAM, Das Neves N, Loiseau F, Raymond M, Beauchemin AM. Aminimide Synthesis Using Concerted Amination Reactions of Alkenes: Scope and Mechanistic Information. J Org Chem 2019; 84:9792-9800. [PMID: 31290665 DOI: 10.1021/acs.joc.9b01259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aminimides are key intermediates in the thermal cycloadditions of suitable alkenyl-hydrazine derivatives. Substrate modifications (β-N,N-dialkyl) allowed the isolation of these reactive intermediates, and the analysis of their stereochemistry provided support for concerted (Cope-type) hydroamination and concerted [3 + 2] aminocarbonylation reaction pathways. This work also establishes the applicability of these approaches to form complex aminimides in moderate to excellent yields.
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Affiliation(s)
- Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Jasper A M Quartus
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Nicolas Das Neves
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Francis Loiseau
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Michaël Raymond
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
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Amabili P, Calvaresi M, Martelli G, Orena M, Rinaldi S, Sgolastra F. Imidazolidinone-Tethered α-Hydrazidopeptides - Synthesis and Conformational Investigation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Paolo Amabili
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Matteo Calvaresi
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Gianluca Martelli
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Mario Orena
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Samuele Rinaldi
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Federica Sgolastra
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
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Wang ZP, Li ZR, Wu Q, Peng XJ, Shao PL, He Y. Enantioselective Synthesis of Alkylthioetherpyrrolidine Derivatives via [3+2] Cycloaddition of α-Thioacrylates with Isocyanoacetates. J Org Chem 2017; 82:12869-12876. [DOI: 10.1021/acs.joc.7b02266] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhi-Peng Wang
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P.R. China
| | - Zi-Rui Li
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P.R. China
| | - Qi Wu
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P.R. China
| | - Xiao-Jiao Peng
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P.R. China
| | - Pan-Lin Shao
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P.R. China
| | - Yun He
- Chongqing Key Laboratory
of Natural Product Synthesis and Drug Research, School of Pharmaceutical
Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, P.R. China
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van Greunen DG, Cordier W, Nell M, van der Westhuyzen C, Steenkamp V, Panayides JL, Riley DL. Targeting Alzheimer's disease by investigating previously unexplored chemical space surrounding the cholinesterase inhibitor donepezil. Eur J Med Chem 2016; 127:671-690. [PMID: 27823887 DOI: 10.1016/j.ejmech.2016.10.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/30/2016] [Accepted: 10/16/2016] [Indexed: 02/07/2023]
Abstract
A series of twenty seven acetylcholinesterase inhibitors, as potential agents for the treatment of Alzheimer's disease, were designed and synthesised based upon previously unexplored chemical space surrounding the molecular skeleton of the drug donepezil, which is currently used for the management of mild to severe Alzheimer's disease. Two series of analogues were prepared, the first looking at the replacement of the piperidine ring in donepezil with different sized saturated N-containing ring systems and the second looking at the introduction of different linkers between the indanone and piperidine rings in donepezil. The most active analogue 5,6-dimethoxy-1-oxo-2,3-dihydro-1H-inden-2-yl 1-benzylpiperidine-4-carboxylate (67) afforded an in vitro IC50 value of 0.03 ± 0.07 μM against acetylcholinesterase with no cytotoxicity observed (IC50 of >100 μM, SH-SY5Y cell line). In comparison donepezil had an IC50 of 0.05 ± 0.06 μM and an observed cytotoxicity IC50 of 15.54 ± 1.12 μM. Molecular modelling showed a strong correlation between activity and in silico binding in the active site of acetylcholinesterase.
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Affiliation(s)
- Divan G van Greunen
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, South Africa
| | - Werner Cordier
- Department of Pharmacology, Faculty of Health Sciences, University of Pretoria, Bophelo Road, Pretoria, South Africa
| | - Margo Nell
- Department of Pharmacology, Faculty of Health Sciences, University of Pretoria, Bophelo Road, Pretoria, South Africa
| | | | - Vanessa Steenkamp
- Department of Pharmacology, Faculty of Health Sciences, University of Pretoria, Bophelo Road, Pretoria, South Africa
| | - Jenny-Lee Panayides
- Pioneering Health Sciences, CSIR Biosciences, Meiring Naudé Road, Pretoria, South Africa
| | - Darren L Riley
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, South Africa.
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Ochiai B, Hirano T. Facile Synthesis of Glycidates via Oxidation of Acrylates with Aqueous Solution of NaOCl in the Presence of Ammonium Salts. HETEROCYCLES 2014. [DOI: 10.3987/com-13-12895] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Hu XY, Yang XY, Cheng M, Zhang Q, Wei W, Ji JX. Efficient Synthesis of α,β-Diamino Acid Derivatives by In(III)-Catalyzed Regioselective Addition of Amines to Aziridines. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2011.582977] [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)
- Xiao-Yu Hu
- a Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu , China
- b Graduate University of the Chinese Academy of Sciences , Beijing , China
| | - Xiang-Yu Yang
- a Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu , China
- b Graduate University of the Chinese Academy of Sciences , Beijing , China
| | - Ming Cheng
- a Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu , China
- b Graduate University of the Chinese Academy of Sciences , Beijing , China
| | - Qiang Zhang
- a Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu , China
- b Graduate University of the Chinese Academy of Sciences , Beijing , China
| | - Wei Wei
- a Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu , China
- b Graduate University of the Chinese Academy of Sciences , Beijing , China
| | - Jian-Xin Ji
- a Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu , China
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