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Gu G, Hou X, Xue M, Pan X, Dong J, Yang Y, Amuzu P, Xu D, Lai D, Zhou L. Diphenyl ethers from endophytic fungus Rhexocercosporidium sp. Dzf14 and their antibacterial activity by affecting homeostasis of cell membranes. PEST MANAGEMENT SCIENCE 2024; 80:2658-2667. [PMID: 38284314 DOI: 10.1002/ps.7972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/03/2024] [Accepted: 01/11/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND Phytopathogenic bacteria cause severe losses to crops every year. The management of crop bacterial diseases with chemical agents has been considered as the main strategy. In order to cope with the bactericide resistance made by the pathogens, new antibacterials need to be continuously developed. RESULTS A chemical investigation from the endophytic fungus Rhexocercosporidium sp. Dzf14 has led to the isolation of 12 diphenyl ethers including two new ones named rhexocerin E (1) and rhexocercosporin G (2), along with two new depsides named rhexocerdepsides A (3) and B (4). The structures and absolute configurations of the new compounds were determined through comprehensive analysis of spectroscopic data and quantum chemical ECD calculations. Diphenyl ethers showed obviously antibacterial activity on Gram-positive bacteria. The structure-activity relationship of diphenyl ethers revealed that prenylation was critical to the antibacterial activity. Among them, rhexocercosporin D (12) possessed the strongest activity against Clavibacter michiganensis and Bacillus subtilis, and was selected for further mechanistic studies. It was found that rhexocercosporin D displayed bactericidal activity by affecting homeostasis of cell membranes. In addition to its rapid bactericidal effects on Gram-positive bacteria, rhexocercosporin D could restore the susceptibility against Gram-negative Agrobacterium tumefaciens by synergistic action with colistin. CONCLUSION Twelve diphenyl ethers and two depsides were isolated from endophytic fungus Rhexocercosporidium sp. Dzf14. Isopentenyl was critical for diphenyl ethers against Gram-positive bacteria. Rhexocercosporin D could affect homeostasis of bacterial cell membrane to exert rapid bactericidal activity. These findings highlight the antibacterial potential of the diphenyl ethers in crop bacterial disease management. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Gan Gu
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xuwen Hou
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Mengyao Xue
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xiaoqian Pan
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jie Dong
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Yonglin Yang
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Prosper Amuzu
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Dan Xu
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Daowan Lai
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Ligang Zhou
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
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Lee S, Yoon SJ, Oh JH, Ryu JS, Park Y, Hwang ES. MPoMA protects against lung epithelial cell injury via p65 degradation. Biomed Pharmacother 2024; 175:116674. [PMID: 38703509 DOI: 10.1016/j.biopha.2024.116674] [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: 02/13/2024] [Revised: 04/20/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024] Open
Abstract
Numerous cases of lung injury caused by viral infection were reported during the coronavirus disease-19 pandemic. While there have been significant efforts to develop drugs that block viral infection and spread, the development of drugs to reduce or reverse lung injury has been a lower priority. This study aimed to identify compounds from a library of compounds that prevent viral infection that could reduce and prevent lung epithelial cell damage. We investigated the cytotoxicity of the compounds, their activity in inhibiting viral spike protein binding to cells, and their activity in reducing IL-8 production in lung epithelial cells damaged by amodiaquine (AQ). We identified N-(4-(4-methoxyphenoxy)-3-methylphenyl)-N-methylacetamide (MPoMA) as a non-cytotoxic inhibitor against viral infection and AQ-induced cell damage. MPoMA inhibited the expression of IL-8, IL-6, IL-1β, and fibronectin induced by AQ and protected against AQ-induced morphological changes. However, MPoMA did not affect basal IL-8 expression in lung epithelial cells in the absence of AQ. Further mechanistic analysis confirmed that MPoMA selectively promoted the proteasomal degradation of inflammatory mediator p65, thereby reducing intracellular p65 expression and p65-mediated inflammatory responses. MPoMA exerted potent anti-inflammatory and protective functions in epithelial cells against LPS-induced acute lung injury in vivo. These findings suggest that MPoMA may have beneficial effects in suppressing viral infection and preventing lung epithelial cell damage through the degradation of p65 and inhibition of the production of inflammatory cytokines.
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Affiliation(s)
- Soheun Lee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Suh Jin Yoon
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Ji Hyun Oh
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jae-Sang Ryu
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yunjeong Park
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea.
| | - Eun Sook Hwang
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea.
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Ashley CN, Broni E, Wood CM, Okuneye T, Ojukwu MPT, Dong Q, Gallagher C, Miller WA. Identifying potential monkeypox virus inhibitors: an in silico study targeting the A42R protein. Front Cell Infect Microbiol 2024; 14:1351737. [PMID: 38500508 PMCID: PMC10945028 DOI: 10.3389/fcimb.2024.1351737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/19/2024] [Indexed: 03/20/2024] Open
Abstract
Monkeypox (now Mpox), a zoonotic disease caused by the monkeypox virus (MPXV) is an emerging threat to global health. In the time span of only six months, from May to October 2022, the number of MPXV cases breached 80,000 and many of the outbreaks occurred in locations that had never previously reported MPXV. Currently there are no FDA-approved MPXV-specific vaccines or treatments, therefore, finding drugs to combat MPXV is of utmost importance. The A42R profilin-like protein of the MPXV is involved in cell development and motility making it a critical drug target. A42R protein is highly conserved across orthopoxviruses, thus A42R inhibitors may work for other family members. This study sought to identify potential A42R inhibitors for MPXV treatment using computational approaches. The energy minimized 3D structure of the A42R profilin-like protein (PDB ID: 4QWO) underwent virtual screening using a library of 36,366 compounds from Traditional Chinese Medicine (TCM), AfroDb, and PubChem databases as well as known inhibitor tecovirimat via AutoDock Vina. A total of seven compounds comprising PubChem CID: 11371962, ZINC000000899909, ZINC000001632866, ZINC000015151344, ZINC000013378519, ZINC000000086470, and ZINC000095486204, predicted to have favorable binding were shortlisted. Molecular docking suggested that all seven proposed compounds have higher binding affinities to A42R (-7.2 to -8.3 kcal/mol) than tecovirimat (-6.7 kcal/mol). This was corroborated by MM/PBSA calculations, with tecovirimat demonstrating the highest binding free energy of -68.694 kJ/mol (lowest binding affinity) compared to the seven shortlisted compounds that ranged from -73.252 to -97.140 kJ/mol. Furthermore, the 7 compounds in complex with A42R demonstrated higher stability than the A42R-tecovirimat complex when subjected to 100 ns molecular dynamics simulations. The protein-ligand interaction maps generated using LigPlot+ suggested that residues Met1, Glu3, Trp4, Ile7, Arg127, Val128, Thr131, and Asn133 are important for binding. These seven compounds were adequately profiled to be potential antivirals via PASS predictions and structural similarity searches. All seven potential lead compounds were scored Pa > Pi for antiviral activity while ZINC000001632866 and ZINC000015151344 were predicted as poxvirus inhibitors with Pa values of 0.315 and 0.215, and Pi values of 0.052 and 0.136, respectively. Further experimental validations of the identified lead compounds are required to corroborate their predicted activity. These seven identified compounds represent solid footing for development of antivirals against MPXV and other orthopoxviruses.
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Affiliation(s)
- Carolyn N. Ashley
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
| | - Emmanuel Broni
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
| | - Chanyah M. Wood
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
- Department of Chemistry and Physics, Lincoln University, Lincoln, PA, United States
| | - Tunmise Okuneye
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
- Department of Biology, Lincoln University, Lincoln, PA, United States
| | - Mary-Pearl T. Ojukwu
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
- Department of Chemistry and Physics, Lincoln University, Lincoln, PA, United States
- College of Pharmacy, University of Florida, Orlando, FL, United States
| | - Qunfeng Dong
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
- Center for Biomedical Informatics, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, United States
| | - Carla Gallagher
- Department of Chemistry and Physics, Lincoln University, Lincoln, PA, United States
| | - Whelton A. Miller
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
- Department of Molecular Pharmacology & Neuroscience, Loyola University Medical Center, Loyola University Chicago, Maywood, IL, United States
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Bai X, Sheng Y, Tang Z, Pan J, Wang S, Tang B, Zhou T, Shi L, Zhang H. Polyketides as Secondary Metabolites from the Genus Aspergillus. J Fungi (Basel) 2023; 9:261. [PMID: 36836375 PMCID: PMC9962652 DOI: 10.3390/jof9020261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Polyketides are an important class of structurally diverse natural products derived from a precursor molecule consisting of a chain of alternating ketone and methylene groups. These compounds have attracted the worldwide attention of pharmaceutical researchers since they are endowed with a wide array of biological properties. As one of the most common filamentous fungi in nature, Aspergillus spp. is well known as an excellent producer of polyketide compounds with therapeutic potential. By extensive literature search and data analysis, this review comprehensively summarizes Aspergillus-derived polyketides for the first time, regarding their occurrences, chemical structures and bioactivities as well as biosynthetic logics.
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Affiliation(s)
- Xuelian Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yue Sheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Zhenxing Tang
- School of Culinary Arts, Tourism College of Zhejiang, Hangzhou 311231, China
| | - Jingyi Pan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Shigui Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Bin Tang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ting Zhou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Lu’e Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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5
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Singh KS, Singh A. Chemical diversities, biological activities and chemical synthesis of marine diphenyl ether and their derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Abdelaziz OA, Othman DIA, Abdel-Aziz MM, Badr SMI, Eisa HM. Novel diaryl ether derivatives as InhA inhibitors: Design, synthesis and antimycobacterial activity. Bioorg Chem 2022; 129:106125. [PMID: 36126606 DOI: 10.1016/j.bioorg.2022.106125] [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: 07/07/2022] [Revised: 08/16/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022]
Abstract
A new series of triclosan (TCL)-mimicking diaryl ether derivatives 7-25 were synthesized and evaluated as inhibitors of enoyl acyl carrier protein reductase InhA enzyme. In addition, these derivatives were screened as inhibitors of drug-susceptible (DS), multidrug-resistant (MDR), and extensive drug-resistant (XDR) Mycobacterium tuberculosis (MTB) strains. Most compounds exihibted superior anti-TB activities and improved ClogP compared to TCL as a standard drug. The present work has led to the identification of compounds 14, 19 and 24 which possess remarkable activities against DS, MDR and XDR MTB strains with MIC values of 1.95, 3.9 and 15.63 µg/ml, respectively for compound 14, 1.95, 3.9 and 7.81 µg/ml, respectively for compound 19 and 0.98, 1.95 and 3.9 µg/ml, respectively for compound 24. Most compounds did not exhibit toxicity to HePG2 normal cell line. Compounds 14, 19 and 24, presenting the best MIC values, were further evaluated as inhibitors of InhA enzyme. They showed high binding affinities in the micromolar range with IC50 values of 1.33, 0.6, and 0.29 µM for compounds 14, 19, and 24, respectively. Furthermore, molecular docking approach was utilized to understand the difference in bioactivities between the new compounds. In particular, the results revealed strong binding interactions and high docking scores of compounds 14, 19 and 24, which could correlate with their high activities. Mainly, the molecular modelling study of compound 24 provides an excellent platform for understanding the molecular mechanism regarding InhA inhibition. Thus, compound 24 could be a lead compound for future development of new antitubercular drugs.
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Affiliation(s)
- Ola A Abdelaziz
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Dina I A Othman
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Marwa M Abdel-Aziz
- The Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo, Egypt
| | - Sahar M I Badr
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Hassan M Eisa
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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7
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Altıntop MD, Sever B, Akalın Çiftçi G, Ertorun İ, Alataş Ö, Özdemir A. A new series of thiosemicarbazone-based anti-inflammatory agents exerting their action through cyclooxygenase inhibition. Arch Pharm (Weinheim) 2022; 355:e2200136. [PMID: 35606682 DOI: 10.1002/ardp.202200136] [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: 03/17/2022] [Revised: 04/14/2022] [Accepted: 04/27/2022] [Indexed: 11/09/2022]
Abstract
In an endeavor to identify potent anti-inflammatory agents, new thiosemicarbazones (TSCs) incorporated into a diaryl ether framework (2a-2l) were prepared and screened for their in vitro inhibitory effects on cyclooxygenases (COXs). 4-[4-(Piperidin-1-ylsulfonyl)phenyl]-1-[4-(4-cyanophenoxy)benzylidene]thiosemicarbazide (2c) was the most potent and selective COX-1 inhibitor in this series, with an IC50 value of 1.89 ± 0.04 µM. On the other hand, 4-[4-(piperidin-1-ylsulfonyl)phenyl]-1-[4-(4-nitrophenoxy)benzylidene]thiosemicarbazide (2b) was identified as a nonselective COX inhibitor (COX-1 IC50 = 13.44 ± 0.65 µM, COX-2 IC50 = 12.60 ± 0.78 µM). Based on molecular docking studies, the diaryl ether and the TSC groups serve as crucial moieties for interactions with pivotal amino acid residues in the active sites of COXs. According to MTT test, compounds 2b and 2c showed low cytotoxic activity toward NIH/3T3 cells. Their in vivo anti-inflammatory and antioxidant potencies were also assessed using the lipopolysaccharide-induced sepsis model. Compounds 2b and 2c diminished high-sensitivity C-reactive protein, myeloperoxidase, nitric oxide, and malondialdehyde levels. Both compounds also caused a significant decrease in aspartate aminotransferase levels as well as alanine aminotransferase levels. In silico pharmacokinetic studies suggest that compounds 2b and 2c possess favorable drug-likeness and oral bioavailability. It can be concluded that these compounds may act as orally bioavailable anti-inflammatory and antioxidant agents.
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Affiliation(s)
- Mehlika D Altıntop
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Belgin Sever
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Gülşen Akalın Çiftçi
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - İpek Ertorun
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskişehir, Turkey
| | - Özkan Alataş
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskişehir, Turkey
| | - Ahmet Özdemir
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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8
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Chen T, Zhang R, Wang YX, Gao MQ, Chen Q, Zhu XL, Yang GF. Discovery of Novel Cytochrome bc1 Complex Inhibitor Based on Natural
Product Neopeltolide. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180818666211006142034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Natural products (NPs) are important sources for the design of new drugs and
agrochemicals. Neopeltolide, a marine NP, has been identified as a potent Qo-site inhibitor of cytochrome
bc1 complex.
Methods:
In this study, a series of neopeltolide derivatives was designed and synthesized by the simplification
of its 14-membered macrolactone ring with a diphenyl ether fragment. The enzymatic inhibition
bioassays and mycelium growth inhibition experiments against a range of fungi were performed to determine
their fungicidal activities.
Results:
The derivatives have potent activity against the porcine bc1 complex. Compound 8q showed the
best activity with an IC50 value of 24.41 nM, which was 8-fold more effective than that of positive control
azoxystrobin. Compound 8a exhibited a 100% inhibitory rate against Zymoseptoria tritici and Alternaria
solani at a 20 mg/L dose.
Conclusion:
Computational results indicated that compounds with suitable physicochemical properties,
as well as those forming a hydrogen bond with His161, would have good fungicidal activity. These data
could be useful for the design of bc1 complex inhibitors in the future.
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Affiliation(s)
- Tao Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for
Intelligent Biosensor Technology and Health of Ministry of Science and Technology, Central China Normal University,
Wuhan 430079, China
| | - Rui Zhang
- Department of Chemical Engineering and Food Science, Hubei University of Arts and Science,
Xiangyang 441053, China
| | - Yu-Xia Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for
Intelligent Biosensor Technology and Health of Ministry of Science and Technology, Central China Normal University,
Wuhan 430079, China
| | - Meng-Qi Gao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for
Intelligent Biosensor Technology and Health of Ministry of Science and Technology, Central China Normal University,
Wuhan 430079, China
| | - Qiong Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for
Intelligent Biosensor Technology and Health of Ministry of Science and Technology, Central China Normal University,
Wuhan 430079, China
| | - Xiao-Lei Zhu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for
Intelligent Biosensor Technology and Health of Ministry of Science and Technology, Central China Normal University,
Wuhan 430079, China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for
Intelligent Biosensor Technology and Health of Ministry of Science and Technology, Central China Normal University,
Wuhan 430079, China
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Lluna‐Galán C, Izquierdo‐Aranda L, Adam R, Cabrero‐Antonino JR. Catalytic Reductive Alcohol Etherifications with Carbonyl-Based Compounds or CO 2 and Related Transformations for the Synthesis of Ether Derivatives. CHEMSUSCHEM 2021; 14:3744-3784. [PMID: 34237201 PMCID: PMC8518999 DOI: 10.1002/cssc.202101184] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/07/2021] [Indexed: 05/27/2023]
Abstract
Ether derivatives have myriad applications in several areas of chemical industry and academia. Hence, the development of more effective and sustainable protocols for their production is highly desired. Among the different methodologies reported for ether synthesis, catalytic reductive alcohol etherifications with carbonyl-based moieties (aldehydes/ketones and carboxylic acid derivatives) have emerged in the last years as a potential tool. These processes constitute appealing routes for the selective production of both symmetrical and asymmetrical ethers (including O-heterocycles) with an increased molecular complexity. Likewise, ester-to-ether catalytic reductions and hydrogenative alcohol etherifications with CO2 to dialkoxymethanes and other acetals, albeit in less extent, have undergone important advances, too. In this Review, an update of the recent progresses in the area of catalytic reductive alcohol etherifications using carbonyl-based compounds and CO2 have been described with a special focus on organic synthetic applications and catalyst design. Complementarily, recent progress made in catalytic acetal/ketal-to-ether or ester-to-ether reductions and other related transformations have been also summarized.
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Affiliation(s)
- Carles Lluna‐Galán
- Instituto de Tecnología QuímicaUniversitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC)Avda. de los Naranjos s/n46022ValenciaSpain
| | - Luis Izquierdo‐Aranda
- Instituto de Tecnología QuímicaUniversitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC)Avda. de los Naranjos s/n46022ValenciaSpain
| | - Rosa Adam
- Instituto de Tecnología QuímicaUniversitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC)Avda. de los Naranjos s/n46022ValenciaSpain
| | - Jose R. Cabrero‐Antonino
- Instituto de Tecnología QuímicaUniversitat Politécnica de València-Consejo Superior Investigaciones Científicas (UPV-CSIC)Avda. de los Naranjos s/n46022ValenciaSpain
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