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Zhang P, Liu H, Xu S, He Y, He X, Sun B, Hu J. Direct Construction of 1,4-Dihydropyridazines and Pyrazoles via Annulation of Alkyl 2-Aroyl-1-chlorocyclopropanecarboxylates. J Org Chem 2024; 89:9853-9860. [PMID: 38822472 DOI: 10.1021/acs.joc.4c00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2024]
Abstract
An efficient and chemodivergent synthesis of highly functionalized 1,4-dihydropyridazines and pyrazoles has been accomplished via base-promoted annulation between hydrazones and alkyl 2-aroyl-1-chlorocyclopropanecarboxylates, respectively. This transition-metal-free domino reaction proceeded rapidly under mild basic conditions, affording potentially bioactive 1,4-dihydropyridazine and pyrazole derivatives in moderate yields. The conversion of 1,4-dihydropyridazine to pyrazole was confirmed by adjusting the quantity of the base.
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Affiliation(s)
- Pengwei Zhang
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Huili Liu
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Shuo Xu
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Yiqun He
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Xinhao He
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Bing Sun
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Junhao Hu
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
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2
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Mitra A, Naik L, Dhiman R, Sarkar N. Protonation-State Dependent Modulation of Hen Egg-White Lysozyme Fibrillation under the Influence of a Short Synthetic Peptide. J Phys Chem B 2024; 128:5995-6013. [PMID: 38875472 DOI: 10.1021/acs.jpcb.4c01578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
Under the influence of various conditions, misfolding of soluble proteins occurs, leading to the formation of toxic insoluble amyloids. The formation and deposition of such amyloids within the body are associated with detrimental biological consequences such as the onset of several amyloid-related diseases. Previously, we established a strategy for the rational design of peptide inhibitors against amyloid formation based on the amyloidogenic-prone region of the protein. In the current study, we have designed and identified an Asp-containing rationally designed hexapeptide (SqP4) as an excellent inhibitor of hen egg-white lysozyme (HEWL) amyloid progression in vitro. First, SqP4 showed strong affinity toward the native monomeric HEWL leading to the stabilization of the native form and restriction in the unfolding process of monomeric HEWL. Second, SqP4 was found to arrest the amyloidogenic misfolded structure of HEWL in a nonfibrillar monomer-like stage. We also observed the differential effect of the protonation state of the charged amino acid (Asp) within the peptide inhibitor on the amyloid formation of HEWL and explored the reason behind the observations. The findings of this study can be implemented in future strategies for the development of potent therapeutics against other amyloid-related diseases.
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Affiliation(s)
- Amit Mitra
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Lincoln Naik
- Laboratory of Mycobacterial Immunology, Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Rohan Dhiman
- Laboratory of Mycobacterial Immunology, Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Nandini Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
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3
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Liu L, Li X, Chen N, Chen X, Xing L, Zhou X, Liu S. Influence of cadmium ion on denaturation kinetics of hen egg white-lysozyme under thermal and acidic conditions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122650. [PMID: 36989696 DOI: 10.1016/j.saa.2023.122650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
To study the influence of Cd(II) ions on denaturation kinetics of hen egg white lysozyme (HEWL) under thermal and acidic conditions, spontaneous Raman spectroscopy in conjunction with Thioflavin-T fluorescence, AFM imaging, far-UV circular dichroism spectroscopy, and transmittance assays was conducted. Four distinctive Raman spectral markers for protein tertiary and secondary structures were recorded to follow the kinetics of conformational transformation. Through comparing variations of these markers in the presence or absence of Cd(II) ions, Cd(II) ions show an ability to efficiently accelerate the disruption of tertiary structure, and meanwhile, to promote the direct formation of organized β-sheets from the uncoiling of α-helices by skipping intermediate random coils. More significantly, with the action of Cd(II) ions, the initially resulting oligomers with disordered structures tend to assemble into aggregates with random structures like gels more than amyloid fibrils, along with a so-called "off-pathway" denaturation pathway. Our results advance the in-depth understanding of corresponding ion-specific effects.
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Affiliation(s)
- Liming Liu
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xinfei Li
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Ning Chen
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiaodong Chen
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Lei Xing
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Xiaoguo Zhou
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
| | - Shilin Liu
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
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4
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Kumari S, Maddeboina K, Bachu RD, Boddu SHS, Trippier PC, Tiwari AK. Pivotal role of nitrogen heterocycles in Alzheimer's disease drug discovery. Drug Discov Today 2022; 27:103322. [PMID: 35868626 DOI: 10.1016/j.drudis.2022.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 06/21/2022] [Accepted: 07/14/2022] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is a detrimental neurodegenerative disease that progressively worsens with time. Clinical options are limited and only provide symptomatic relief to AD patients. The search for effective anti-AD compounds is ongoing with a few already in Phase III clinical trials, yet to be approved. Heterocycles containing nitrogen are important to biological processes owing to their abundance in nature, their function as subunits of biological molecules and/or macromolecular structures, and their biological activities. The present review discusses previously used strategies, SAR, relevant in vitro and in vivo studies, and success stories of nitrogen-containing heterocyclic compounds in AD drug discovery. Also, we propose strategies for designing and developing novel potent anti-AD small molecules that can be used as treatments for AD.
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Affiliation(s)
- Shikha Kumari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA.
| | - Krishnaiah Maddeboina
- Molecular Targeted Therapeutics Laboratory, Levine Cancer Institute/Atrium Health, Charlotte, NC 28204, USA
| | - Rinda Devi Bachu
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA
| | - Sai H S Boddu
- College of Pharmacy and Health Sciences, Ajman University, UAE; Center of Medical and Bio-allied Health Sciences Research, Ajman University, P.O. Box 346, Ajman, UAE
| | - Paul C Trippier
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, UNMC Center for Drug Discovery, Fred & Pamela Buffett Cancer Center, Omaha, NE 68198, USA
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA; Center of Medical and Bio-allied Health Sciences Research, Ajman University, P.O. Box 346, Ajman, UAE; Department of Cancer Biology, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH 43614, USA.
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5
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Rezaei M, Kalhor HR. Amyloid fibril reduction through covalently modified lysine in HEWL and insulin. Arch Biochem Biophys 2022; 727:109350. [PMID: 35830943 DOI: 10.1016/j.abb.2022.109350] [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: 03/16/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022]
Abstract
Proteins possess a variety of nucleophiles, which can carry out different reactions in the functioning cells. Proteins endogenously and synthetically can be modified through their nucleophilic sites. The roles of these chemical modifications have not been completely revealed. These modifications can alter the protein folding process. Protein folding directly affects the function of proteins. If an error in protein folding occurs, it may cause protein malfunction leading to several neurodegenerative disorders such as Alzheimer's and Parkinson's. In this study, Hen Egg White Lysozyme (HEWL) and bovine insulin, as model proteins for studying the amyloid formation, were covalently attached with 5(6)-thiophenolfluorescein. The amyloid formation of the covalently labeled lysozyme and insulin were compared with the native proteins. Interestingly, the results indicated that the covalent attachment of fluorescein slowed down the amyloid formation of HEWL and insulin significantly. The amyloid formation was examined using Thioflavin T (ThT) fluorescence assay, circular dichroism, FTIR, and gel electrophoresis. Tandem mass spectrometry was employed to identify the sites of covalent modifications in HEWL. It turned out that two surface lysine residues (K97 and K 116) in HEWL were modified. Computational studies, including docking and molecular simulations, revealed that 5(6)-thiophenolfluorescein makes several non-covalent interactions with HEWL residues, including Lys 97, leading to the reduction of the β-sheet in the protein. Additionally, AFM analysis confirmed the amyloid fibril reduction of lysine-modified bovine insulin and HEWL. Altogether, our results expand mechanistic insights into preventing amyloid formation by providing an approach for reducing amyloid formation by modifying specific lysine residues in the proteins.
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Affiliation(s)
- Mohsen Rezaei
- Biochemistry and Chemical Biology Research Laboratory, Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Hamid Reza Kalhor
- Biochemistry and Chemical Biology Research Laboratory, Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran.
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Lee OS, Petrenko VI, Šipošová K, Musatov A, Park H, Lanceros-Méndez S. How fullerenes inhibit the amyloid fibril formation of hen lysozyme. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.10.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Ashrafian H, Zadeh EH, Khan RH. Review on Alzheimer's disease: Inhibition of amyloid beta and tau tangle formation. Int J Biol Macromol 2020; 167:382-394. [PMID: 33278431 DOI: 10.1016/j.ijbiomac.2020.11.192] [Citation(s) in RCA: 138] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/18/2020] [Accepted: 11/28/2020] [Indexed: 12/19/2022]
Abstract
It is reported that approximately 40 million people are suffering from dementia, globally. Dementia is a group of symptoms that affect neurons and cause some mental disorders, such as losing memory. Alzheimer's disease (AD) which is known as the most common cause of dementia, is one of the top medical care concerns across the world. Although the exact sources of the disease are not understood, is it believed that aggregation of amyloid-beta (Aβ) outside of neuron cells and tau aggregation or neurofibrillary tangles (NFTs) formation inside the cell may play crucial roles. In this paper, we are going to review studies that targeted inhibition of amyloid plaque and tau protein tangle formation, to suppress or postpone AD.
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Affiliation(s)
- Hossein Ashrafian
- Department of Chemistry and Biochemistry, Ohio State University, Columbus, OH, USA; Department of Chemistry, Sharif University of Technology, Tehran, Iran.
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Duan L, Wang X, Gu Y, Hou Y, Gong P. Regioselective construction of pyridazine and tetrahydrocinnoline derivatives via [4 + 2] cycloaddition–elimination with α-halogeno hydrazones and enaminones. Org Chem Front 2020. [DOI: 10.1039/d0qo00555j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Herein, we report the de novo construction of pyridazine scaffolds via a [4 + 2] cycloaddition–elimination reaction with α-halogeno hydrazones and enaminones.
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Affiliation(s)
- Liancheng Duan
- School of Pharmaceutical Engineering
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Xin Wang
- School of Pharmaceutical Engineering
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Yucheng Gu
- Syngenta Jealott's Hill International Research Center
- Berkshire RG42 6EY
- UK
| | - Yunlei Hou
- School of Pharmaceutical Engineering
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Ping Gong
- School of Pharmaceutical Engineering
- Shenyang Pharmaceutical University
- Shenyang
- China
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9
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Kalhor HR, Jabbary M. Investigating Reliable Conditions for HEWL as an Amyloid Model in Computational Studies and Drug Interactions. J Chem Inf Model 2019; 59:5218-5229. [DOI: 10.1021/acs.jcim.9b00819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hamid R. Kalhor
- Biochemistry Research Laboratory, Department of Chemistry, Sharif University of Technology, PO Box: 11365-11155 Tehran, Iran
| | - Mohammadparsa Jabbary
- Biochemistry Research Laboratory, Department of Chemistry, Sharif University of Technology, PO Box: 11365-11155 Tehran, Iran
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Kaur A, Narang SS, Kaur A, Mann S, Priyadarshi N, Goyal B, Singhal NK, Goyal D. Multifunctional Mono-Triazole Derivatives Inhibit Aβ42 Aggregation and Cu2+-Mediated Aβ42 Aggregation and Protect Against Aβ42-Induced Cytotoxicity. Chem Res Toxicol 2019; 32:1824-1839. [DOI: 10.1021/acs.chemrestox.9b00168] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Faculty of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140406, Punjab, India
| | - Simranjeet Singh Narang
- Department of Chemistry, Faculty of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140406, Punjab, India
| | - Anupamjeet Kaur
- Department of Chemistry, Faculty of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140406, Punjab, India
| | - Sukhmani Mann
- Department of Chemistry, Faculty of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140406, Punjab, India
| | - Nitesh Priyadarshi
- National Agri-Food Biotechnology Institute, S.A.S. Nagar 140306, Punjab, India
| | - Bhupesh Goyal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, India
| | - Nitin Kumar Singhal
- National Agri-Food Biotechnology Institute, S.A.S. Nagar 140306, Punjab, India
| | - Deepti Goyal
- Department of Chemistry, Faculty of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140406, Punjab, India
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Wu Q, Shao PL, He Y. Synthesis of 1,4,5,6-tetrahydropyridazines and pyridazines via transition-metal-free (4 + 2) cycloaddition of alkoxyallenes with 1,2-diaza-1,3-dienes. RSC Adv 2019; 9:21507-21512. [PMID: 35521294 PMCID: PMC9066181 DOI: 10.1039/c9ra02712b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/04/2019] [Indexed: 12/19/2022] Open
Abstract
We developed an economical and practical protocol for the synthesis of 1,4,5,6-tetrahydropyridazines. A diverse range of alkoxyallenes and 1,2-diaza-1,3-dienes undergo (4 + 2) cycloaddition to generate the desired products in excellent yields. The high efficiency, wide substrate scope and good functional group tolerance of this process, coupled with operational simplicity, render the method synthetically attractive. The utility of the cycloaddition is also demonstrated by the preparation of various pyridazines from 1,4,5,6-tetrahydropyridazines. We developed an economical and practical protocol for the synthesis of 1,4,5,6-tetrahydropyridazines and pyridazines via cyclization of alkoxyallenes and 1,2-diaza-1,3-dienes.![]()
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Affiliation(s)
- Qi Wu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- People's Republic of China
| | - Pan-Lin Shao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- People's Republic of China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- People's Republic of China
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