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Zhao G, Li W, Zhang J. Recent Advances in Palladium-Catalyzed Asymmetric Heck/Tsuji-Trost Reactions of 1,n-Dienes. Chemistry 2024; 30:e202400076. [PMID: 38349344 DOI: 10.1002/chem.202400076] [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: 01/08/2024] [Indexed: 03/01/2024]
Abstract
Transition-metal catalyzed tandem asymmetric reactions were powerful tools to access various chiral compounds. Many strategies have been developed for the coupling of 1,n-dienes with aryl halides via a tandem Heck/Tsuji-Trost process. However, the control of regio- and stereo-chemistry remains a challenging task. This minireview details the recent advances in the field of asymmetric Heck/Tsuji-Trost reactions catalyzed by palladium complex, which have opened new opportunities and expanded our understanding in this area of research in recent years.
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Affiliation(s)
- Guofeng Zhao
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang, 471023, China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China
| | - Wenbo Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
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Hayashi T, Bohman B, Scaffidi A, Peakall R, Flematti GR. An unusual tricosatriene is crucial for male fungus gnat attraction and exploitation by sexually deceptive Pterostylis orchids. Curr Biol 2021; 31:1954-1961.e7. [DOI: 10.1016/j.cub.2021.01.095] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/22/2020] [Accepted: 01/26/2021] [Indexed: 02/07/2023]
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Faroux JM, Borba A, Ureta MM, Tymczyszyn EE, Gomez-Zavaglia A. A combined approach of electronic spectroscopy and quantum chemical calculations to assess model membrane oxidation pathways. NEW J CHEM 2021. [DOI: 10.1039/d1nj03685h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Assessment of lipid oxidation pathways using UV spectroscopy and quantum chemical calculations.
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Affiliation(s)
- J. M. Faroux
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
| | - A. Borba
- CIEPQPF – Department of Chemical Engineering, University of Coimbra, P-3030-790 Coimbra, Portugal
| | - M. M. Ureta
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
| | - E. E. Tymczyszyn
- Laboratorio de Microbiología Molecular – Departamento de Ciencia y Tecnología – Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - A. Gomez-Zavaglia
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
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Yuan G, Liu J, Yu S, Yuan C, Bian Q, Wang M, Zhong J. Asymmetric Synthesis of (3 Z,6 Z,9 S,10 R)-9,10-Epoxy-3,6-heneicosadiene, Sex Pheromone Component of Hyphantria cunea. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202107005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Qiao X, Yang L, Gu J, Cao Y, Li Z, Xu J, Xue C. Kinetic interactions of nanocomplexes between astaxanthin esters with different molecular structures and β-lactoglobulin. Food Chem 2020; 335:127633. [PMID: 32739813 DOI: 10.1016/j.foodchem.2020.127633] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 07/16/2020] [Accepted: 07/19/2020] [Indexed: 12/27/2022]
Abstract
The influence of different fatty acid carbon chains on the kinetic interactions of nanocomplexes between esterified astaxanthin (E-Asta) and β-lactoglobulin (β-Lg) were investigated by multi-spectroscopy and molecular modeling techniques. We synthesized ten different E-Asta bound to β-Lg and formed nanocomplexes (< 300 nm). Fluorescence spectroscopy showed moderate affinities (binding constants Ka = 103-104 M-1). Docosahexaenoic acid astaxanthin monoester (Asta-C22:6) had the strongest binding affinity towards β-Lg (Ka = 3.77 × 104 M-1). The fluorescence quenching of β-Lg upon binding of E-Asta displayed a static mechanism, with binding sites (n) equal to 1. Fourier transform infrared spectroscopy and ultraviolet-visible absorption spectroscopy revealed that E-Asta might enter the β-Lg hydrophobic cavity, leading to unfolding of the peptide chain skeleton. In summary, β-Lg and E-Asta can form stable nanocomplex emulsions to achieve an effective delivery process for E-Asta.
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Affiliation(s)
- Xing Qiao
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China.
| | - Lu Yang
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China.
| | - Jiayu Gu
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China.
| | - Yunrui Cao
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China.
| | - Zhaojie Li
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China.
| | - Jie Xu
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China.
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China; Qingdao National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Qingdao 266235, China.
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Reactive Sterol Electrophiles: Mechanisms of Formation and Reactions with Proteins and Amino Acid Nucleophiles. CHEMISTRY (BASEL, SWITZERLAND) 2020; 2:390-417. [PMID: 35372835 PMCID: PMC8976181 DOI: 10.3390/chemistry2020025] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Radical-mediated lipid oxidation and the formation of lipid hydroperoxides has been a focal point in the investigation of a number of human pathologies. Lipid peroxidation has long been linked to the inflammatory response and more recently, has been identified as the central tenet of the oxidative cell death mechanism known as ferroptosis. The formation of lipid electrophile-protein adducts has been associated with many of the disorders that involve perturbations of the cellular redox status, but the identities of adducted proteins and the effects of adduction on protein function are mostly unknown. Both cholesterol and 7-dehydrocholesterol (7-DHC), which is the immediate biosynthetic precursor to cholesterol, are oxidizable by species such as ozone and oxygen-centered free radicals. Product mixtures from radical chain processes are particularly complex, with recent studies having expanded the sets of electrophilic compounds formed. Here, we describe recent developments related to the formation of sterol-derived electrophiles and the adduction of these electrophiles to proteins. A framework for understanding sterol peroxidation mechanisms, which has significantly advanced in recent years, as well as the methods for the study of sterol electrophile-protein adduction, are presented in this review.
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Affiliation(s)
- Jan Honzíček
- Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
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Ratnikov MO, Doyle MP. Dirhodium caprolactamate and tert-butyl hydro- peroxide – a universal system for selective oxidations. MENDELEEV COMMUNICATIONS 2014. [DOI: 10.1016/j.mencom.2014.06.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Lamberson CR, Xu L, Muchalski H, Montenegro-Burke JR, Shmanai VV, Bekish AV, McLean JA, Clarke CF, Shchepinov MS, Porter NA. Unusual kinetic isotope effects of deuterium reinforced polyunsaturated fatty acids in tocopherol-mediated free radical chain oxidations. J Am Chem Soc 2014; 136:838-41. [PMID: 24380377 DOI: 10.1021/ja410569g] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Substitution of -CD2- at the reactive centers of linoleic and linolenic acids reduces the rate of abstraction of D by a tocopheryl radical by as much as 36-fold, compared to the abstraction of H from a corresponding -CH2- center. This H atom transfer reaction is the rate-determining step in the tocopherol-mediated peroxidation of lipids in human low-density lipoproteins, a process that has been linked to coronary artery disease. The unanticipated large kinetic isotope effects reported here for the tocopherol-mediated oxidation of linoleic and linolenic acids and esters suggests that tunneling makes this process favorable.
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Affiliation(s)
- Connor R Lamberson
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University , Nashville, Tennessee 37235, United States
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Porter NA. A perspective on free radical autoxidation: the physical organic chemistry of polyunsaturated fatty acid and sterol peroxidation. J Org Chem 2013; 78:3511-24. [PMID: 23445181 DOI: 10.1021/jo4001433] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This Perspective describes advances from the author's laboratory on the free radical reactions of organic compounds with molecular oxygen. Polyunsaturated fatty acids (PUFAs) and sterols are particularly prone to undergo radical chain oxidation, and evidence suggests that this process, known as lipid peroxidation, occurs in vivo under a variety of conditions that are the result of an oxidative stress. Cyclic peroxides, hydroperoxides, and epoxy alcohols are major products formed from peroxidation, and the basic mechanisms of product formation are now reasonably well understood. These mechanisms include reversible addition of oxygen to carbon radicals, rearrangement and cyclization of allyl and pentadienyl peroxyl radicals, and homolytic substitution of carbon radicals on the peroxide bond. A physical organic approach to the problem of free radicals in biology and medicine is highlighted in this Perspective with stereochemical, kinetic, and extrathermodynamic probes applied to the study of mechanism. A radical clock permits the determination of free radical propagation rate constants, and 7-dehydrocholesterol, the immediate biosynthetic precursor of cholesterol, is found by this clock to be one of the most oxidizable lipids known. The consequences of the extreme reactivity of 7-dehydrocholesterol on human health is the focus of a current research theme in the author's laboratory.
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Affiliation(s)
- Ned A Porter
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, USA.
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Oger C, Balas L, Durand T, Galano JM. Are alkyne reductions chemo-, regio-, and stereoselective enough to provide pure (Z)-olefins in polyfunctionalized bioactive molecules? Chem Rev 2012. [PMID: 23194255 DOI: 10.1021/cr3001753] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Camille Oger
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247, Université Montpellier 1, Faculté de Pharmacie, 15 av. Charles Flahault, Bât. D, 34093 Montpellier Cedex 05, France
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Yin H, Xu L, Porter NA. Free Radical Lipid Peroxidation: Mechanisms and Analysis. Chem Rev 2011; 111:5944-72. [DOI: 10.1021/cr200084z] [Citation(s) in RCA: 1195] [Impact Index Per Article: 91.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huiyong Yin
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
- Departments of Medicine and Pharmacology, Division of Clinical Pharmacology, Vanderbilt School of Medicine, Nashville, Tennessee 37232, United States
| | - Libin Xu
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ned A. Porter
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
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Pratt DA, Tallman KA, Porter NA. Free radical oxidation of polyunsaturated lipids: New mechanistic insights and the development of peroxyl radical clocks. Acc Chem Res 2011; 44:458-67. [PMID: 21486044 DOI: 10.1021/ar200024c] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The peroxidation of lipids in biological membranes has been implicated in both the onset and development of most degenerative diseases. The primary products of this autoxidation process are usually lipid hydroperoxides. They form as a consequence of a free radical chain reaction: lipid peroxyl radicals propagate the chain by rate-limiting H-atom abstraction from another lipid. Studies of the mechanism of lipid peroxidation are a specific part of a wider effort to understand the more general phenomenon of hydrocarbon autoxidation, which dates back some 70 years. However, the autoxidation of lipids is generally much more complicated than that of other hydrocarbons because of additional reaction pathways afforded by a variety of uniquely positioned unsaturated bonds. Indeed, polyunsaturation is an important aspect of many of the most relevant of physiological lipids, such as linoleate and arachidonate. In this Account, we present our current understanding of the mechanism of unsaturated lipid peroxidation, effectively updating our Account on the same topic published 25 years ago. Our more recent work has, in large part, been stimulated by the discovery of the nonconjugated linoleate hydroperoxide as a product under certain autoxidation conditions. The identification of this long-elusive bis-allylic hydroperoxide prompted our kinetic characterization of the reaction leading to its formation. The product distributions obtained from autoxidations of newly synthesized model compounds, which vary in either the substitution of the bis-allylic moiety or the configuration of the double bonds, have provided key insights into the overall mechanism. These insights have in turn been reinforced by the results of theoretical calculations. The picture that emerges is one wherein the delocalized carbon-centered radicals, which arise as intermediates in these reactions, first associate with dioxygen to form pre-reaction complexes. These complexes then collapse through transition state structures that maximize the orbital interactions between the delocalized radical SOMO and dioxygen. The energies of these transition states are influenced by steric effects; thus, there are distinct changes in product distribution in the autoxidation of dienes having different substitution patterns. The radical-dioxygen complexes are also intermediates in the isomerization of allylperoxyl and pentadienylperoxyls, helping explain the high regio- and stereochemical fidelity of these processes. We have taken advantage of the rapid fragmentation of nonconjugated peroxyl radicals to develop a powerful peroxyl radical clock methodology, which can be used to determine rate constants for reactions of peroxyl radicals with molecules having rate constants ranging from 1 to 10(7) M(-1) s(-1). We can make use of this methodology to address various questions, both fundamental and applied, relating to lipid peroxidation and its inhibition by radical-trapping antioxidants.
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Affiliation(s)
- Derek A. Pratt
- Department of Chemistry, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario, Canada K1N 6N5
| | - Keri A. Tallman
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ned A. Porter
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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Ogawa N, Kobayashi Y. Total synthesis of the antiinflammatory and proresolving protectin D1. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.152] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Selim KB, Nakanishi H, Matsumoto Y, Yamamoto Y, Yamada KI, Tomioka K. Chiral N-heterocyclic carbene-copper(I)-catalyzed asymmetric allylic arylation of aliphatic allylic bromides: steric and electronic effects on γ-selectivity. J Org Chem 2011; 76:1398-408. [PMID: 21265531 DOI: 10.1021/jo102386s] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chiral N-heterocyclic carbene ligands were electronically and sterically tuned to improve γ-selectivity in copper(I)-catalyzed asymmetric allylic arylation of aliphatic allylic bromides with several aryl Grignard reagents. High γ-selectivity was realized when either the aryl group of the Grignard reagent or the aryl group on the N-substituent of the carbene ligand was electron-deficient or when either the carbene ligand or allylic bromide was bulky. The results indicated that electron deficiency and steric hindrance of the initially formed σ-allyl copper intermediate enhance the rate of the reductive elimination to give γ-products as major isomers.
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Affiliation(s)
- Khalid B Selim
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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Mihaljević B, Tartaro I, Ferreri C, Chatgilialoglu C. Linoleic acid peroxidation vs. isomerization: a biomimetic model of free radical reactivity in the presence of thiols. Org Biomol Chem 2011; 9:3541-8. [DOI: 10.1039/c1ob05083d] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu W, Yin H, Akazawa YO, Yoshida Y, Niki E, Porter NA. Ex vivo oxidation in tissue and plasma assays of hydroxyoctadecadienoates: Z,E/E,E stereoisomer ratios. Chem Res Toxicol 2010; 23:986-95. [PMID: 20423158 DOI: 10.1021/tx1000943] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The primary products from peroxidation of linoleate in biological tissues and fluids are the hydroperoxy octadecadienoates, and the products normally assayed, after reduction of the hydroperoxides, are the corresponding hydroxy octadecadienoates (HODEs). The HODEs are found in tissues and fluids as a mixture of Z,E and E,E stereoisomers. Two regioisomeric sets of Z,E and E,E stereoisomers are normally observed with substitution at the 9- and 13-positions of the 18-carbon chain. The Z,E/E,E product ratio has proved to be a useful means for assessing the reducing capacity of the medium undergoing peroxidation. The HODE Z,E/E,E product ratios previously reported for tissues such as liver and brain vary from 0.5 to 2.0, and plasma ratios are somewhat higher, between 2.0 and 3.0. The reported literature protocols for HODE assay in tissues involve homogenization, reduction with sodium borohydride in the presence of BHT, and ester hydrolysis with KOH to give the free HODEs. This is followed by either reverse-phase HPLC of the free acid HODEs or by conversion to TMS derivatives and GC-MS. When sodium borohydride is replaced in the protocol by triphenylphosphine, a gentler reducing agent, HODE Z,E/E,E product ratios are much higher, and lower total HODE levels of are found. It is proposed that inclusion of sodium borohydride in the isolation procedures leads to ex vivo reactions that are avoided if triphenylphosphine is used as the reducing agent. Modified protocols for HODE analyses (tissue and plasma methods #2) are described that should be used for assays of tissues and fluids.
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Affiliation(s)
- Wei Liu
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
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Hu D, Pratt DA. Secondary orbital interactions in the propagation steps of lipid peroxidation. Chem Commun (Camb) 2010; 46:3711-3. [DOI: 10.1039/c0cc00019a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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