1
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Zhou L, Liang Z, Qin Y, Chan CK. Evaporation-Induced Transformations in Volatile Chemical Product-Derived Secondary Organic Aerosols: Browning Effects and Alterations in Oxidative Reactivity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:11105-11117. [PMID: 38866390 DOI: 10.1021/acs.est.4c02316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Volatile chemical products (VCPs) are increasingly recognized as significant sources of volatile organic compounds (VOCs) in urban atmospheres, potentially serving as key precursors for secondary organic aerosol (SOA) formation. This study investigates the formation and physicochemical transformations of VCP-derived SOA, produced through ozonolysis of VOCs evaporated from a representative room deodorant air freshener, focusing on the effects of aerosol evaporation on its molecular composition, light absorption properties, and reactive oxygen species (ROS) generation. Following aerosol evaporation, solutes become concentrated, accelerating reactions within the aerosol matrix that lead to a 42% reduction in peroxide content and noticeable browning of the SOA. This process occurs most effectively at moderate relative humidity (∼40%), reaching a maximum solute concentration before aerosol solidification. Molecular characterization reveals that evaporating VCP-derived SOA produces highly conjugated nitrogen-containing products from interactions between existing or transformed carbonyl compounds and reduced nitrogen species, likely acting as chromophores responsible for the observed brownish coloration. Additionally, the reactivity of VCP-derived SOA was elucidated through heterogeneous oxidation of sulfur dioxide (SO2), which revealed enhanced photosensitized sulfate production upon drying. Direct measurements of ROS, including singlet oxygen (1O2), superoxide (O2•-), and hydroxyl radicals (•OH), showed higher abundances in dried versus undried SOA samples under light exposure. Our findings underscore that drying significantly alters the physicochemical properties of VCP-derived SOA, impacting their roles in atmospheric chemistry and radiative balance.
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Affiliation(s)
- Liyuan Zhou
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Jeddah 23955-6900, Kingdom of Saudi Arabia
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
| | - Zhancong Liang
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Jeddah 23955-6900, Kingdom of Saudi Arabia
| | - Yiming Qin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
| | - Chak K Chan
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Jeddah 23955-6900, Kingdom of Saudi Arabia
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2
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Kimber MC, Lee DS. The Kornblum DeLaMare rearrangement in natural product synthesis: 25 years of innovation. Nat Prod Rep 2024; 41:813-833. [PMID: 38294038 DOI: 10.1039/d3np00058c] [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: 02/01/2024]
Abstract
Covering: 1998 up to the end of 2023Since its initial disclosure in 1951, the Kornblum DeLaMare rearrangement has proved an important synthetic transformation and has been widely adopted as a biomimetic step in natural product synthesis. Utilising the base catalysed decomposition of alkyl peroxides to yield a ketone and alcohol has found use in many syntheses as well as a key strategic step, including the unmasking of furans, as a biomimetic synthetic tool, and the use of the rearrangement to install oxygen enantioselectively. Since ca. 1998, its impact as a synthetic transformation has grown significantly, especially given the frequency of use in natural product syntheses, therefore this 25 year time period will be the focus of the review.
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Affiliation(s)
- Marc C Kimber
- Department of Chemistry, School of Science, Loughborough University, Loughborough, LE11 3TU, UK.
| | - Darren S Lee
- Centre for Green Chemistry and Green Engineering at Yale, Yale University, New Haven, CT 06511, USA.
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3
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Ikonnikova VA, Cheibas C, Gayraud O, Bosnidou AE, Casaretto N, Frison G, Nay B. Tandem Hock and Friedel-Crafts reactions allowing an expedient synthesis of a cyclolignan-type scaffold. Beilstein J Org Chem 2024; 20:162-169. [PMID: 38292045 PMCID: PMC10825801 DOI: 10.3762/bjoc.20.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/19/2024] [Indexed: 02/01/2024] Open
Abstract
The Hock cleavage, which is compatible with tandem processes, was applied to the synthesis of 1-aryltetralines through a one-pot transformation from readily available benzyl(prenyl)malonate substrates. After the photooxygenation of the prenyl moiety, the resulting hydroperoxide was directly engaged in a Hock cleavage by adding a Lewis acid. The presence of an aromatic nucleophile in the reaction mixture and that of a benzyl moiety on the substrate resulted in tandem Friedel-Crafts reactions to form the 1-aryltetraline products. These compounds share a close analogy to the cyclolignan natural products. Experimental observations and a DFT study support the involvement of an aldehyde intermediate during the Friedel-Crafts reactions, rather than an oxocarbenium.
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Affiliation(s)
- Viktoria A Ikonnikova
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Cristina Cheibas
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Oscar Gayraud
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Alexandra E Bosnidou
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Gilles Frison
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, 75005 Paris, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
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4
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Jethwa RB, Mondal S, Pant B, Freunberger SA. To DISP or Not? The Far-Reaching Reaction Mechanisms Underpinning Lithium-Air Batteries. Angew Chem Int Ed Engl 2023:e202316476. [PMID: 38095355 DOI: 10.1002/anie.202316476] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Indexed: 06/11/2024]
Abstract
The short history of research on Li-O2 batteries has seen a remarkable number of mechanistic U-turns over the years. From the initial use of carbonate electrolytes, that were then found to be entirely unsuitable, to the belief that (su)peroxide was solely responsible for degradation, before the more reactive singlet oxygen was found to form, to the hypothesis that capacity depends on a competing surface/solution mechanism before a practically exclusive solution mechanism was identified. Herein, we argue for an ever-fresh look at the reported data without bias towards supposedly established explanations. We explain how the latest findings on rate and capacity limits, as well as the origin of side reactions, are connected via the disproportionation (DISP) step in the (dis)charge mechanism. Therefrom, directions emerge for the design of electrolytes and mediators on how to suppress side reactions and to enable high rate and high reversible capacity.
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Affiliation(s)
- Rajesh B Jethwa
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Soumyadip Mondal
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Bhargavi Pant
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Stefan A Freunberger
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
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5
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Khalifa S, Enomoto M, Nakagawa K. Unveiling an unexpected superoxide-mediated photooxidation mechanism of squalene monohydroperoxides to squalene hydroperoxy cyclic peroxides through ESR and LC-MS/MS analyses. Sci Rep 2023; 13:19525. [PMID: 37945632 PMCID: PMC10636020 DOI: 10.1038/s41598-023-46044-9] [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: 10/06/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023] Open
Abstract
Lipid cyclic peroxides are a rarely reported and documented class of compounds in the human organism. Recently, we reported the formation of squalene (SQ) hydroperoxy cyclic peroxides derived from SQ monohydroperoxide isomers (SQ-OOHs) for the first time. Notably, we successfully detected and quantified cis-2-OOH-3-(1,2-dioxane)-SQ in the human skin. Nevertheless, the underlying mechanism governing the formation of these compounds remained elusive. Therefore, in the current study, we set to determine the reaction's mechanism. To this end, a comprehensive analysis of the precise conditions involved in the onset and propagation of this conversion was carried out by oxidizing total SQ-OOHs under different conditions, including singlet oxygen (1O2), thermal, and photoinduced oxidations monitored by quantifying the generated 2-OOH-3-(1,2-dioxane)-SQ using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Radical intermediates were thoroughly investigated using Electron Spin Resonance (ESR) with the aid of spin traps and radical references. Moreover, calculations of SQ-OOHs' electrostatic charges were performed on Spartan 18 software. We found that the reaction is ideally induced and favored under photooxidation in the presence of 3O2 in hexane, and that superoxide radical (O2•-) is the first key intermediate in this mechanism, whereas peroxyl radicals were the major species observed throughout the oxidation. Chemical calculations provided an explanation for the targeting of tertiary SQ-OOHs by this reaction and gave further evidence on the proposed heterolytic cleavage initiating the reaction. The novel oxidation mechanism suggested herein offers new insights into understanding lipid secondary oxidation and is a promising finding for further studying lipid cyclic peroxides in general.
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Affiliation(s)
- Saoussane Khalifa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Masaru Enomoto
- Applied Bioorganic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Kiyotaka Nakagawa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan.
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6
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Legendre SAM, Sumby CJ, Karton A, Greatrex BW. Desymmetrization and Kinetic Resolution of Endoperoxides Using a Bifunctional Organocatalyst. J Org Chem 2023; 88:11444-11449. [PMID: 37552803 PMCID: PMC10443531 DOI: 10.1021/acs.joc.3c00278] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Indexed: 08/10/2023]
Abstract
Bifunctional thiourea/amine organocatalysts have been used for the desymmetrization of meso-endoperoxides using the Kornblum-DeLaMare reaction, giving 4-hydroxyketones in 78-98% yields with ≤98:2 enantioselectivity. The influence of the catalyst structure, solvent, and temperature was examined. The most promising catalyst was applied to the kinetic resolution of racemic endoperoxides to give enantioenriched materials (≤99:1 er).
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Affiliation(s)
| | - Christopher J. Sumby
- Department
of Chemistry, School of Physics, Chemistry and Earth Sciences, The University of Adelaide, Adelaide, SA 5000, Australia
| | - Amir Karton
- School
of Science and Technology, University of
New England, Armidale 2351, Australia
| | - Ben W. Greatrex
- Faculty
of Medicine and Health, University of New
England, Armidale 2351, Australia
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7
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Oxidation and degradation of (epi)gallocatechin gallate (EGCG/GCG) and (epi)catechin gallate (ECG/CG) in alkali solution. Food Chem 2023; 408:134815. [PMID: 36549155 DOI: 10.1016/j.foodchem.2022.134815] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 10/16/2022] [Accepted: 10/28/2022] [Indexed: 11/11/2022]
Abstract
The oxidative decomposition/degradation of two main tea flavanols, EGCG/GCG and ECG/CG, was studied in alkaline solution under ultrasonic-assisted thermal conditions. The study employed HPLC-ESI-ToF-MS to identify the products generated by atmospheric oxygen oxidation and various base-catalyzed reactions. Strong basic condition led to accelerated hydrolysis and oxidation of EGCG/GCG and ECG/CG and yielded gallic acid, de-galloyl flavanols and corresponding o-quinone derivatives. Meanwhile, peroxidation or base-catalyzed cleavage and rearrangement occurred extensively on C- and B-rings of flavanol and generated various simpler aldehydes or acids. Besides, a number of dimers/trimers were produced. This contribution provides empirical proof of oxidative degradation of flavanols under strong alkaline condition. Meanwhile, detailed reaction mechanisms of C-/B-ring degradation and dimerization/polymerization phenomena are proposed to help understand the structural changes of flavanols under strong alkaline conditions.
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8
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Khan A, Mallik S, Koner AL. Perylene-Based Smart Fluoroprobe with Dual Function: Ratiometric Response toward Hazardous Organic Peroxides and Pure White Light Generation via Self-Assembly. J Org Chem 2023. [PMID: 37134254 DOI: 10.1021/acs.joc.3c00043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In this report, we have designed and synthesized a perylene-based smart fluoroprobe (PBE) in which the perylene core has been functionalized with the boronate group at the peri-position. PBE shows a very fast and ratiometric response toward harmful organic peroxides (OPs) generated in old ethereal solvents via auto-oxidation. The response toward OPs takes place with a visible color change from green to yellow, which could be easily observed with the naked eye. The reaction between PBE and OPs involves the cleavage of the boronate group and its consequent conversion into the -OH group. The response of PBE toward OPs was monitored using UV-vis absorption, fluorescence emission, IR spectroscopy, and mass spectrometry. Additionally, we have also explored the self-assembly of PBE in an organic-aqueous solvent mixture, which shows pure white light emission (WLE) with the CIE coordinates (0.33, 0.33) in a 50% dimethyl sulfoxide-water mixture. This work clearly reveals that PBE fluoroprobe can be employed for sensitive detection of hazardous OPs present in old ethereal solvents. Moreover, the ability of PBE to generate the perfect pure WLE makes it a potential candidate for application in organic light-emitting devices.
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Affiliation(s)
- Aasif Khan
- Bionanotechnology Lab, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Sriya Mallik
- Bionanotechnology Lab, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Apurba Lal Koner
- Bionanotechnology Lab, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
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9
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Miyazaki R, Kato S, Otoki Y, Rahmania H, Sakaino M, Takeuchi S, Sato T, Imagi J, Nakagawa K. Elucidation of decomposition pathways of linoleic acid hydroperoxide isomers by GC-MS and LC-MS/MS. Biosci Biotechnol Biochem 2023; 87:179-190. [PMID: 36416801 DOI: 10.1093/bbb/zbac189] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 11/10/2022] [Indexed: 11/24/2022]
Abstract
Food lipid oxidation provides various volatile compounds involved in food flavor via the decomposition of lipid hydroperoxide (LOOH). This study predicted the pathways which can coherently explain LOOH decomposition focusing on hydroperoxy octadecadienoic acid (HpODE) isomers (9-EZ-HpODE, 9-EE-HpODE, 10-HpODE, 12-HpODE, 13-ZE-HpODE, and 13-EE-HpODE) which are the major LOOH contained in edible oils. Each standard was first prepared and thermally decomposed. Generated volatile and non-volatile compounds were analyzed by GC-MS and LC-MS/MS. The results showed that all HpODE decomposition was based on the factors such as favorable scission, radical delocalization, and cyclization. Interestingly, the formation of 8-HpODE and 14-HpODE were demonstrated during HpODE decomposition. The insights obtained in this study would explain the generation pathways of flavor involved in food quality.
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Affiliation(s)
- Ruriko Miyazaki
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Shunji Kato
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan.,J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Yurika Otoki
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Halida Rahmania
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Masayoshi Sakaino
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan.,Food Design Center, J-OIL MILLS, INC., Yokohama, Kanagawa, Japan
| | - Shigeo Takeuchi
- Food Design Center, J-OIL MILLS, INC., Yokohama, Kanagawa, Japan
| | - Toshiro Sato
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan.,Food Design Center, J-OIL MILLS, INC., Yokohama, Kanagawa, Japan
| | - Jun Imagi
- Food Design Center, J-OIL MILLS, INC., Yokohama, Kanagawa, Japan
| | - Kiyotaka Nakagawa
- Laboratory of Food Function Analysis, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan.,J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
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10
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High-Temperature-Treated LTX Zeolites as Heterogeneous Catalysts for the Hock Cleavage. Catalysts 2023. [DOI: 10.3390/catal13010202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Hydroxybenzene, commonly known as phenol, is one of the most important organic commodity chemicals. To produce phenol, the cumene process is the most used process worldwide. A crucial step in this process is the Hock rearrangement, which has a major impact on the overall cumene consumption rate and determines the safety level of the process. The most used catalyst for the cleavage of cumene hydroperoxide (CHP) is sulfuric acid. Besides its strong corrosive property, which increases plant investment costs, it also requires neutralization after the decomposition step to prevent side reactions. In this study, we show that high-temperature-treated Linde Type X (LTX) zeolites exhibit a high activity for the peroxide cleavage step. In addition, the structure–activity relationship responsible for this good performance in the reaction system of the HOCK rearrangement was investigated. XRPD analyses revealed the formation of a new phase after temperature treatment above 900 °C. The Si/Al ratio determined by EDX suggested the formation of extra-framework aluminum, which was confirmed by solid-state NMR analysis. The newly formed extra-framework aluminum was found to be responsible for the high catalytic activity. BET analyses showed that the surface area drops at higher calcination temperatures. This leads to a lower catalytic activity for most known reactions. However, for this study, no decrease in activity has been observed. The newfound material shows extraordinarily high activity as a catalyst in the HOCK cleavage and has the potential to be a heterogeneous alternative to sulfuric acid for this reaction.
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11
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Li J, Hu X, Yu C, Zeng K, Wang S, Tu Z. Rapid screening of oxidized metabolites of unsaturated fatty acids in edible oil by NanoESI-MS/MS. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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12
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1-(2-Benzyl-1,5-dimethyl-6,7,8-trioxabicyclo[3.2.1]octan-2-yl)ethan-1-ol. MOLBANK 2022. [DOI: 10.3390/m1532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The title compound, 1-(2-Benzyl-1,5-dimethyl-6,7,8-trioxabicyclo[3.2.1]octan-2-yl)ethan-1-ol, was synthesized for the first time by the selective reduction in keto ozonide under the action of the strong reducing agent LiAlH4. The product was characterized by NMR, IR, HRMS, and elemental analysis.
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13
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Shaikh MA, Samal PP, Ubale AS, Krishnamurty S, Gnanaprakasam B. Lewis Acid-Catalyzed Chemodivergent and Regiospecific Reaction of Phenols with Quaternary Peroxyoxindoles. J Org Chem 2022; 87:14155-14167. [PMID: 36269888 DOI: 10.1021/acs.joc.2c01701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The indium-catalyzed regiospecific coupling of substituted phenol derivatives and quaternary peroxyoxindoles for the synthesis of C2 or C4 benzoxazin-3-one-substituted phenols via skeletal rearrangement is described. This reaction is demonstrated with 17 examples with good yields and diverse aryl substituents. In contrast to the indium-catalyzed reaction, the Cu(OTf)2-catalyzed reaction of the phenol with quaternary peroxyoxindoles afforded C2 or C4 2-oxindole-substituted phenol derivatives. This diverse catalytic reaction generated various biologically important phenol-substituted 2-oxindole derivatives directly without any skeleton rearrangement and was demonstrated with 19 examples in high yield. The regiospecificity and the reaction pathways were explained with the support of density functional theory (DFT).
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Affiliation(s)
- Moseen A Shaikh
- Department of Chemistry, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Pragnya Paramita Samal
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Akash S Ubale
- Department of Chemistry, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Sailaja Krishnamurty
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Boopathy Gnanaprakasam
- Department of Chemistry, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
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14
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Yang Y, Du W, Qian G, Duan X, Gu X, Zhou X, Yang Z, Zhang J. Kinetically guided high‐yield and rapid production of ε‐caprolactone in a microreactor system. AIChE J 2022. [DOI: 10.1002/aic.17867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yue Yang
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Wei Du
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Gang Qian
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Xuezhi Duan
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Xiongyi Gu
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Xinggui Zhou
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Zhirong Yang
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Jing Zhang
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
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15
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Zhu G, Yan W, Wang X, Cheng R, Naowarojna N, Wang K, Wang J, Song H, Wang Y, Liu H, Xia X, Costello CE, Liu X, Zhang L, Liu P. Dissecting the Mechanism of the Nonheme Iron Endoperoxidase FtmOx1 Using Substrate Analogues. JACS AU 2022; 2:1686-1698. [PMID: 35911443 PMCID: PMC9326825 DOI: 10.1021/jacsau.2c00248] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
FtmOx1 is a nonheme iron (NHFe) endoperoxidase, catalyzing three disparate reactions, endoperoxidation, alcohol dehydrogenation, and dealkylation, under in vitro conditions; the diversity complicates its mechanistic studies. In this study, we use two substrate analogues to simplify the FtmOx1-catalyzed reaction to either a dealkylation or an alcohol dehydrogenation reaction for structure-function relationship analysis to address two key FtmOx1 mechanistic questions: (1) Y224 flipping in the proposed COX-like model vs α-ketoglutarate (αKG) rotation proposed in the CarC-like mechanistic model and (2) the involvement of a Y224 radical (COX-like model) or a Y68 radical (CarC-like model) in FtmOx1-catalysis. When 13-oxo-fumitremorgin B (7) is used as the substrate, FtmOx1-catalysis changes from the endoperoxidation to a hydroxylation reaction and leads to dealkylation. In addition, consistent with the dealkylation side-reaction in the COX-like model prediction, the X-ray structure of the FtmOx1•CoII•αKG•7 ternary complex reveals a flip of Y224 to an alternative conformation relative to the FtmOx1•FeII•αKG binary complex. Verruculogen (2) was used as a second substrate analogue to study the alcohol dehydrogenation reaction to examine the involvement of the Y224 radical or Y68 radical in FtmOx1-catalysis, and again, the results from the verruculogen reaction are more consistent with the COX-like model.
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Affiliation(s)
- Guoliang Zhu
- State
Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wupeng Yan
- School
of Life Sciences and Biotechnology, Shanghai
Jiao Tong University, Shanghai 200237, China
| | - Xinye Wang
- State
Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ronghai Cheng
- Department
of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Nathchar Naowarojna
- Department
of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Kun Wang
- State
Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jun Wang
- School
of Life Sciences and Biotechnology, Shanghai
Jiao Tong University, Shanghai 200237, China
| | - Heng Song
- College
of Chemistry and Molecular Sciences, Wuhan
University, Wuhan, Hubei Province 430072, China
| | - Yuyang Wang
- State
Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hairong Liu
- Key
Biosensor Laboratory of Shandong Province, Biology Institute, Qilu University of Technology (Shandong Academy
of Sciences), Jinan, Shandong Province 250013, China
| | - Xuekui Xia
- Key
Biosensor Laboratory of Shandong Province, Biology Institute, Qilu University of Technology (Shandong Academy
of Sciences), Jinan, Shandong Province 250013, China
| | - Catherine E. Costello
- Department
of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Xueting Liu
- State
Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Lixin Zhang
- State
Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Pinghua Liu
- Department
of Chemistry, Boston University, Boston, Massachusetts 02215, United States
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16
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Wei J, Fang T, Shiraiwa M. Effects of Acidity on Reactive Oxygen Species Formation from Secondary Organic Aerosols. ACS ENVIRONMENTAL AU 2022; 2:336-345. [PMID: 35928555 PMCID: PMC9342606 DOI: 10.1021/acsenvironau.2c00018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Reactive oxygen species (ROS) play a critical role in the chemical transformation of atmospheric secondary organic aerosols (SOA) and aerosol health effects by causing oxidative stress in vivo. Acidity is an important physicochemical property of atmospheric aerosols, but its effects on the ROS formation from SOA have been poorly characterized. By applying the electron paramagnetic resonance spin-trapping technique and the Diogenes chemiluminescence assay, we find highly distinct radical yields and composition at different pH values in the range of 1-7.4 from SOA generated by oxidation of isoprene, α-terpineol, α-pinene, β-pinene, toluene, and naphthalene. We observe that isoprene SOA has substantial hydroxyl radical (•OH) and organic radical yields at neutral pH, which are 1.5-2 times higher compared to acidic conditions in total radical yields. Superoxide (O2 •-) is found to be the dominant species generated by all types of SOAs at lower pH. At neutral pH, α-terpineol SOA exhibits a substantial yield of carbon-centered organic radicals, while no radical formation is observed by aromatic SOA. Further experiments with model compounds show that the decomposition of organic peroxide leading to radical formation may be suppressed at lower pH due to acid-catalyzed rearrangement of peroxides. We also observe 1.5-3 times higher molar yields of hydrogen peroxide (H2O2) in acidic conditions compared to neutral pH by biogenic and aromatic SOA, likely due to enhanced decomposition of α-hydroxyhydroperoxides and quinone redox cycling, respectively. These findings are critical to bridge the gap in understanding ROS formation mechanisms and kinetics in atmospheric and physiological environments.
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17
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Wang L, Shu S, Lv L, Li Z. Copper-catalyzed remote trifluoromethylthiolation-peroxidation of unactivated alkenes via 1,5-hydrogen atom transfer. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Lai RY, Mondal A, Fedoseyenko D, Begley TP. Mechanistic Studies on the Single-Turnover Yeast Thiamin Pyrimidine Synthase: Characterization of the Inactive Enzyme. J Am Chem Soc 2022; 144:10711-10717. [PMID: 35675507 DOI: 10.1021/jacs.2c03322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The eukaryotic thiamin pyrimidine synthase, THI5p, has been identified as a suicidal/single-turnover enzyme that catalyzes the conversion of its active site histidine and lysine-bound pyridoxal phosphate (PLP) to the thiamin pyrimidine (HMP-P). Here we identify the histidine and PLP fragments using bottom-up proteomics and LC-MS analysis. We also identify the active form of the iron cofactor and quantitate the oxygen requirement of the THI5p reaction. This information is integrated into a mechanistic proposal for this remarkable reaction.
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Affiliation(s)
- Rung-Yi Lai
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Anushree Mondal
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Dmytro Fedoseyenko
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Tadhg P Begley
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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19
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Lipid Peroxidation Produces a Diverse Mixture of Saturated and Unsaturated Aldehydes in Exhaled Breath That Can Serve as Biomarkers of Lung Cancer-A Review. Metabolites 2022; 12:metabo12060561. [PMID: 35736492 PMCID: PMC9229171 DOI: 10.3390/metabo12060561] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/09/2022] [Accepted: 06/17/2022] [Indexed: 02/06/2023] Open
Abstract
The peroxidation of unsaturated fatty acids is a widely recognized metabolic process that creates a complex mixture of volatile organic compounds including aldehydes. Elevated levels of reactive oxygen species in cancer cells promote random lipid peroxidation, which leads to a variety of aldehydes. In the case of lung cancer, many of these volatile aldehydes are exhaled and are of interest as potential markers of the disease. Relevant studies reporting aldehydes in the exhaled breath of lung cancer patients were collected for this review by searching the PubMed and SciFindern databases until 25 May 2022. Information on breath test results, including the biomarker collection, preconcentration, and quantification methods, was extracted and tabulated. Overall, 44 studies were included spanning a period of 34 years. The data show that, as a class, aldehydes are significantly elevated in the breath of lung cancer patients at all stages of the disease relative to healthy control subjects. The type of aldehyde detected and/or deemed to be a biomarker is highly dependent on the method of exhaled breath sampling and analysis. Unsaturated aldehydes, detected primarily when derivatized during preconcentration, are underrepresented as biomarkers given that they are also likely products of lipid peroxidation. Pentanal, hexanal, and heptanal were the most reported aldehydes in studies of exhaled breath from lung cancer patients.
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20
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Bera T, Singh B, Jana M, Saha J. Access to 3,3'-disubstituted peroxyoxindole derivatives and α-peroxyamides via azaoxyallyl cation-guided addition of hydroperoxides. Chem Commun (Camb) 2022; 58:7538-7541. [PMID: 35703384 DOI: 10.1039/d2cc02378d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a transition metal-free approach for access to 3,3'-disubstituted peroxyoxindole is disclosed, which harnesses a transient azaoxyallyl cation. This strategy is also applicable to the synthesis of structurally diverse α-peroxycarboxylic acid surrogates. The method exhibits good functional group tolerance and is suitable for generating a library of peroxy-containing compounds.
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Affiliation(s)
- Tishyasoumya Bera
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India. .,Department of Chemistry, University of Kalyani, Kalyani-741235, India
| | - Bandana Singh
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Manoranjan Jana
- Department of Chemistry, University of Kalyani, Kalyani-741235, India
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
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21
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Joo SR, Kim SH. Dual Functionality of Choline Hydroxide for the Dakin Reaction. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666210202155412] [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
:
A facile synthetic approach to Dakin oxidation utilizing green conditions was demonstrated. A combination of
hydrogen peroxide and aqueous choline hydroxide in cooperation with various hydroxyl aryl aldehydes and ketones was
used to provide the corresponding dihydric aromatic compounds. The whole procedure was conducted at ambient temperature in an aerobic environment. The scope of ChOH/H2O2 platform was also investigated, showing that the reactivity of the
present platform was highly dependent on the position of the hydroxy group of the aromatic ring.
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Affiliation(s)
- Seong-Ryu Joo
- Department of Chemistry, Dankook University, Cheonan, Republic of Korea
| | - Seung-Hoi Kim
- Department of Chemistry, Dankook University, Cheonan, Republic of Korea
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22
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Tamanna, Hussain Y, Sharma D, Chauhan P. Asymmetric Synthesis of Cyclohexenone-Fused Isochromans via Quinidine-Catalyzed Domino Peroxyhemiacetalization/Oxa-Michael Addition/Desymmetrization Sequence. J Org Chem 2022; 87:6397-6402. [PMID: 35438500 DOI: 10.1021/acs.joc.2c00215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A highly enantio- and diastereoselective synthesis of highly functionalized isochromans was achieved through an organocatalyzed domino reaction. Quinidine as the catalyst initiates a peroxyhemiacetalization/oxa-Michael/desymmetrization domino sequence between various 2,5-cyclohexadienone-tethered aryl aldehydes with hydroperoxides to generate the single diastereomers of isochromans appended with a cyclohexenone ring bearing three vicinal stereocenters in good yields and high enantioselectivities under ambient reaction conditions.
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Affiliation(s)
- Tamanna
- Department of Chemistry, Indian Institute of Technology Jammu, Jagti, NH-44, Nagrota Bypass, Jammu 181221, J&K, India
| | - Yaseen Hussain
- Department of Chemistry, Indian Institute of Technology Jammu, Jagti, NH-44, Nagrota Bypass, Jammu 181221, J&K, India
| | - Deepak Sharma
- Department of Chemistry, Indian Institute of Technology Jammu, Jagti, NH-44, Nagrota Bypass, Jammu 181221, J&K, India
| | - Pankaj Chauhan
- Department of Chemistry, Indian Institute of Technology Jammu, Jagti, NH-44, Nagrota Bypass, Jammu 181221, J&K, India
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23
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Yaremenko IA, Belyakova YY, Radulov PS, Novikov RA, Medvedev MG, Krivoshchapov NV, Korlyukov AA, Alabugin IV, Terent Ev AO. Inverse α-Effect as the Ariadne's Thread on the Way to Tricyclic Aminoperoxides: Avoiding Thermodynamic Traps in the Labyrinth of Possibilities. J Am Chem Soc 2022; 144:7264-7282. [PMID: 35418230 DOI: 10.1021/jacs.2c00406] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Stable tricyclic aminoperoxides can be selectively assembled via a catalyst-free three-component condensation of β,δ'-triketones, H2O2, and an NH-group source such as aqueous ammonia or ammonium salts. This procedure is scalable and can produce gram quantities of tricyclic heterocycles, containing peroxide, nitrogen, and oxygen cycles in one molecule. Amazingly, such complex tricyclic molecules are selectively formed despite the multitude of alternative reaction routes, via equilibration of peroxide, hemiaminal, monoperoxyacetal, and peroxyhemiaminal functionalities! The reaction is initiated by the "stereoelectronic frustration" of H2O2 and combines elements of thermodynamic and kinetic control with a variety of mono-, bi-, and tricyclic structures evolving under the conditions of thermodynamic control until they reach a kinetic wall created by the inverse α-effect, that is, the stereoelectronic penalty for the formation of peroxycarbenium ions and related transition states. Under these conditions, the reaction stops before reaching the most thermodynamically stable products at a stage where three different heterocycles are assembled and fused at the acyclic precursor frame.
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Affiliation(s)
- Ivan A Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Yulia Yu Belyakova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Peter S Radulov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Roman A Novikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Michael G Medvedev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Nikolai V Krivoshchapov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation.,Lomonosov Moscow State University, Leninskie Gory 1 (3), Moscow 119991, Russian Federation
| | - Alexander A Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russian Federation
| | - Igor V Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Fl 32306, United States
| | - Alexander O Terent Ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
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24
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Yaremenko IA, Radulov PS, Belyakova YY, Fomenkov DI, Tsogoeva SB, Terent’ev AO. Lewis Acids and Heteropoly Acids in the Synthesis of Organic Peroxides. Pharmaceuticals (Basel) 2022; 15:ph15040472. [PMID: 35455469 PMCID: PMC9025639 DOI: 10.3390/ph15040472] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/08/2022] [Accepted: 04/09/2022] [Indexed: 12/04/2022] Open
Abstract
Organic peroxides are an important class of compounds for organic synthesis, pharmacological chemistry, materials science, and the polymer industry. Here, for the first time, we summarize the main achievements in the synthesis of organic peroxides by the action of Lewis acids and heteropoly acids. This review consists of three parts: (1) metal-based Lewis acids in the synthesis of organic peroxides; (2) the synthesis of organic peroxides promoted by non-metal-based Lewis acids; and (3) the application of heteropoly acids in the synthesis of organic peroxides. The information covered in this review will be useful for specialists in the field of organic synthesis, reactions and processes of oxygen-containing compounds, catalysis, pharmaceuticals, and materials engineering.
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Affiliation(s)
- Ivan A. Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
- Correspondence: (I.A.Y.); (A.O.T.)
| | - Peter S. Radulov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
| | - Yulia Yu. Belyakova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
| | - Dmitriy I. Fomenkov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
| | - Svetlana B. Tsogoeva
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University of Erlangen–Nürnberg, Nikolaus Fiebiger-Straße 10, 91058 Erlangen, Germany;
| | - Alexander O. Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
- Correspondence: (I.A.Y.); (A.O.T.)
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25
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Determination of acrolein generation pathways from linoleic acid and linolenic acid: increment by photo irradiation. NPJ Sci Food 2022; 6:21. [PMID: 35413955 PMCID: PMC9005701 DOI: 10.1038/s41538-022-00138-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 03/14/2022] [Indexed: 12/03/2022] Open
Abstract
2-Propenal (acrolein) is a toxic aldehyde generated from the thermal degradation of edible oils. While previous studies have suggested that linolenic acid (LnA) is the origin of acrolein formation in edible oils, these studies were performed under thermal conditions where only the fatty acid hydroperoxide (FAOOH) isomers derived from radical oxidation were formed. In this study, we reinvestigated the acrolein generation pathway through another oxidation mechanism involving singlet oxygen (1O2) oxidation (type II photo-oxidation). Standards of the main FAOOH isomers (oleic acid hydroperoxide, linoleic acid hydroperoxide (HpODE), and linolenic acid hydroperoxide (HpOTE)) found in edible oils were prepared, and their decomposition products, including those derived from1O2 oxidation (i.e., 10- and 12-HpODE) were analyzed by GC-EI-MS. We found that 1O2 oxidation products of linoleic acid (LA) and LnA but not OA, are significant sources of acrolein formation. The amount of acrolein formed from edible oils high in LA (e.g., rice bran oil) increased by photo irradiation. Further investigation into the mechanism of acrolein generation demonstrated that the amount of acrolein derived from 1O2 oxidation-specific HpOTE isomers (i.e., 10- and 15-HpOTE) was two times greater than that of other HpOTE isomers (i.e., 9-, 12-, 13-, and 16-HpOTE). The results of the present study provide a new pathway of acrolein formation from type II photo-oxidation. This information can be used to inform on oil storage and processing conditions to reduce exposure and dietary intake of acrolein.
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26
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Development of Biodegradable Delivery Systems Containing Novel 1,2,4-Trioxolane Based on Bacterial Polyhydroxyalkanoates. ADVANCES IN POLYMER TECHNOLOGY 2022. [DOI: 10.1155/2022/6353909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work, delivery systems in the form of microparticles and films containing 1,2,4-trioxolane (ozonide, OZ) based on polyhydroxyalkanoates (PHAs) were developed. Main systems’ characteristics were investigated: the particle yield, average diameter, zeta potential, surface morphology, loading capacity, and drug release profile of microparticles, as well as surface morphology and release profiles of OZ-containing films. PHA-based OZ-loaded microparticles have been found to have satisfactory size, zeta potential, and ozonide loading-release behavior. It was noted that OZ content influenced the surface morphology of obtained systems.
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27
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Ferrié L, Jamey N. From Ring-Expansion to Ring-Contraction: Synthesis of γ-Lactones from Cyclobutanols and Relative Stability of Five- and Six-Membered Endoperoxides toward Organic Bases. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1765-1615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractCyclobutanols undergo ring expansion with molecular oxygen in the presence of Co(acac)2 to afford 1,2-dioxane-hemiperoxyketals. In the course of acylation, we observed that endoperoxides rearranged into γ-lactone in the presence of triethylamine. Thus, a generalization of this ring contraction through a Kornblum–DeLaMare rearrangement is here reported. Application of this transformation to monosubstituted 1,2-dioxane derivatives also led to 1,4-ketoaldehydes, in proportions depending on the nature of the substituent. These same conditions applied to five-membered dioxolane analogues led to fragmentation instead, through a retro-aldol type process. This study emphasizes the difference of stability of 1,2-dioxane and 1,2-dioxolane against organic bases, 1,2-dioxolanes having proved to be particularly reactive whereas 1,2-dioxanes showed a relative tolerance under these conditions.
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28
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Luck RL, Newberry NK. Free‐radical catalyzed oxidation reactions with cyclohexene and cyclooctene with peroxides as initiators. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4326] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rudy L. Luck
- Department of Chemistry Michigan Technological University Houghton Michigan USA
| | - Nick K. Newberry
- Department of Chemistry Michigan Technological University Houghton Michigan USA
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29
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Saleh SKA, Hazra A, Hajra S. Regioselective Hydroperoxylation of Aziridines and Epoxides Only with Aqueous Hydrogen Peroxide. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100858] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- SK Abu Saleh
- Centre of Biomedical Research Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus Raebareli Road Lucknow 226014 India
| | - Atanu Hazra
- Centre of Biomedical Research Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus Raebareli Road Lucknow 226014 India
| | - Saumen Hajra
- Centre of Biomedical Research Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus Raebareli Road Lucknow 226014 India
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30
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Abstract
The oxidation of cumene and following cleavage of cumene hydroperoxide (CHP) with sulfuric acid (Hock rearrangement) is still, by far, the dominant synthetic route to produce phenol. In 2020, the global phenol market reached a value of 23.3 billion US$ with a projected compound annual growth rate of 3.4% for 2020–2025. From ecological and economical viewpoints, the key step of this process is the cleavage of CHP. One sought-after way to likewise reduce energy consumption and waste production of the process is to substitute sulfuric acid with heterogeneous catalysts. Different types of zeolites, silicon-based clays, heteropoly acids, and ion exchange resins have been investigated and tested in various studies. For every type of these solid acid catalysts, several materials were found that show high yield and selectivity to phenol. In this mini-review, first a brief introduction and overview on the Hock process is given. Next, the mechanism, kinetics, and safety aspects are summarized and discussed. Following, the different types of heterogeneous catalysts and their performance as catalyst in the Hock process are illustrated. Finally, the different approaches to substitute sulfuric acid in the synthetic route to produce phenol are briefly concluded and a short outlook is given.
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31
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Zhang CS, Shao YP, Zhang FM, Han X, Zhang XM, Zhang K, Tu YQ. Cu(II)/SPDO complex-catalyzed asymmetric Baeyer–Villiger oxidation of 2-arylcyclobutanones and its application for the total synthesis of eupomatilones 5 and 6. Chem Sci 2022; 13:8429-8435. [PMID: 35919715 PMCID: PMC9297696 DOI: 10.1039/d2sc02079c] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/21/2022] [Indexed: 11/22/2022] Open
Abstract
A novel classical kinetic resolution of 2-aryl-substituted or 2,3-disubstituted cyclobutanones of Baeyer–Villiger oxidation catalyzed by a Cu(ii)/SPDO complex is reported for the first time, producing normal lactones in excellent enantioselectivities (up to 96% ee) and regioselectivities (up to >20/1), along with unreacted ketones in excellent enantioselectivities (up to 99% ee). The current transformation features a wide substrate scope. Moreover, catalytic asymmetric total syntheses of natural eupomatilones 5 and 6 are achieved in nine steps from commercially available 3-methylcyclobutan-1-one. A novel classical kinetic resolution of Baeyer–Villiger oxidation catalyzed by a Cu(ii)/SPDO complex with excellent enantioselectivity, regioselectivity and wide substrate scope is reported for the first time and explore the synthetic application.![]()
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Affiliation(s)
- Chang-Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Ya-Ping Shao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Xue Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University Jiangmen 529020 Guangdong P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
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32
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Drug associations as alternative and complementary therapy for neglected tropical diseases. Acta Trop 2022; 225:106210. [PMID: 34687644 DOI: 10.1016/j.actatropica.2021.106210] [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: 08/12/2021] [Revised: 10/02/2021] [Accepted: 10/15/2021] [Indexed: 12/23/2022]
Abstract
The present paper aims to establish different treatments for neglected tropical disease by a survey on drug conjugations and possible fixed-dose combinations (FDC) used to obtain alternative, safer and more effective treatments. The source databases used were Science Direct and PubMed/Medline, in the intervals between 2015 and 2021 with the drugs key-words or diseases, like "schistosomiasis", "praziquantel", "malaria", "artesunate", "Chagas' disease", "benznidazole", "filariasis", diethylcarbamazine", "ivermectin", " albendazole". 118 works were the object of intense analysis, other articles and documents were used to increase the quality of the studies, such as consensuses for harmonizing therapeutics and historical articles. As a result, an effective NTD control can be achieved when different public health approaches are combined with interventions guided by the epidemiology of each location and the availability of appropriate measures to detect, prevent and control disease. It was also possible to verify that the FDCs promote a simplification of the therapeutic regimen, which promotes better patient compliance and enables a reduction in the development of parasitic resistance, requiring further studies aimed at resistant strains, since the combined APIs usually act by different mechanisms or at different target sites. In addition to eliminating the process of developing a new drug based on the identification and validation of active compounds, which is a complex, long process and requires a strong long-term investment, other advantages that FDCs have are related to productive gain and gain from the industrial plant, which can favor and encourage the R&D of new FDCs not only for NTDs but also for other diseases that require the use of more than one drug.
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33
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Sun Z, Chen L, Qiu KX, Liu B, Li H, Yu F. Enantioselective Peroxidation of C-Alkynyl Imines Enabled by Chiral BINOL Calcium Phosphate. Chem Commun (Camb) 2022; 58:3035-3038. [DOI: 10.1039/d1cc07156d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we reported a catalytic enantioselective addition of C-alkynyl imines with hydroperoxides catalyzd by chiral BINOL calcium phosphate, affording a broad range of enantioenriched α-peroxy propargylamines in good yields (80-99%)...
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Hipper E, Blech M, Hinderberger D, Garidel P, Kaiser W. Photo-Oxidation of Therapeutic Protein Formulations: From Radical Formation to Analytical Techniques. Pharmaceutics 2021; 14:72. [PMID: 35056968 PMCID: PMC8779573 DOI: 10.3390/pharmaceutics14010072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/09/2021] [Accepted: 12/14/2021] [Indexed: 12/25/2022] Open
Abstract
UV and ambient light-induced modifications and related degradation of therapeutic proteins are observed during manufacturing and storage. Therefore, to ensure product quality, protein formulations need to be analyzed with respect to photo-degradation processes and eventually protected from light exposure. This task usually demands the application and combination of various analytical methods. This review addresses analytical aspects of investigating photo-oxidation products and related mediators such as reactive oxygen species generated via UV and ambient light with well-established and novel techniques.
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Affiliation(s)
- Elena Hipper
- Institute of Chemistry, Martin-Luther-Universität Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (E.H.); (D.H.)
| | - Michaela Blech
- Boehringer Ingelheim Pharma GmbH & Co. KG, Innovation Unit, PDB, Birkendorfer Strasse 65, 88397 Biberach an der Riss, Germany;
| | - Dariush Hinderberger
- Institute of Chemistry, Martin-Luther-Universität Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (E.H.); (D.H.)
| | - Patrick Garidel
- Boehringer Ingelheim Pharma GmbH & Co. KG, Innovation Unit, PDB, Birkendorfer Strasse 65, 88397 Biberach an der Riss, Germany;
| | - Wolfgang Kaiser
- Boehringer Ingelheim Pharma GmbH & Co. KG, Innovation Unit, PDB, Birkendorfer Strasse 65, 88397 Biberach an der Riss, Germany;
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35
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Zhuk TS, Babkina VV, Zorn H. Aerobic C−C Bond Cleavage Catalyzed by Whole‐Cell Cultures of the White‐Rot Fungus
Dichomitus albidofuscus. ChemCatChem 2021. [DOI: 10.1002/cctc.202101408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tatyana S. Zhuk
- Institute of Food Chemistry and Food Biotechnology Justus Liebig University Giessen Heinrich-Buff-Ring, 17 35392 Giessen Germany
- Department of Organic Chemistry Igor Sikorsky Kyiv Polytechnic Institute Peremogy Ave., 37 03056 Kyiv Ukraine
| | - Valeriia V. Babkina
- Department of Organic Chemistry Igor Sikorsky Kyiv Polytechnic Institute Peremogy Ave., 37 03056 Kyiv Ukraine
| | - Holger Zorn
- Institute of Food Chemistry and Food Biotechnology Justus Liebig University Giessen Heinrich-Buff-Ring, 17 35392 Giessen Germany
- Fraunhofer Institute of Molecular Biology and Applied Ecology Ohlebergsweg 12 35392 Giessen Germany
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36
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Bertolini V, Appiani R, Pallavicini M, Bolchi C. Green Oxidation of Ketones to Lactones with Oxone in Water. J Org Chem 2021; 86:15712-15716. [PMID: 34643386 DOI: 10.1021/acs.joc.1c01469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclic ketones were quickly and quantitatively converted to 5-, 6-, and 7-membered lactones, very important synthons, by treatment with Oxone, a cheap, stable, and nonpollutant oxidizing reagent, in 1 M NaH2PO4/Na2HPO4 water solution (pH 7). Under such simple and green conditions, no hydroxyacid was formed, thus making the adoption of more complex and non-eco-friendly procedures previously developed to avoid lactone hydrolysis unnecessary. With some changes, the method was successfully applied also to water-insoluble ketones such as adamantanone, acetophenone, 2-indanone, and the challenging cycloheptanone.
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Affiliation(s)
- Valentina Bertolini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133 Milano, Italy
| | - Rebecca Appiani
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133 Milano, Italy
| | - Marco Pallavicini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133 Milano, Italy
| | - Cristiano Bolchi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133 Milano, Italy
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37
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Mogg TJ, Burton GW. The β-carotene–oxygen copolymer: its relationship to apocarotenoids and β-carotene function. CAN J CHEM 2021. [DOI: 10.1139/cjc-2021-0006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
β-carotene spontaneously copolymerizes with molecular oxygen to form a β-carotene–oxygen copolymer compound (“copolymer”) as the main product, together with small amounts of many apocarotenoids. Both the addition and scission products are interpreted as being formed during progression through successive free radical β-carotene–oxygen adduct intermediates. The product mixture from full oxidation of β-carotene, lacking both vitamin A and β-carotene, has immunological activities, some of which are derived from the copolymer. However, the copolymer’s chemical makeup is unknown. A chemical breakdown study shows the compound to be moderately stable but nevertheless the latent source of many small apocarotenoids. GC–MS analysis with mass-spectral library matching identified a minimum of 45 structures, while more than 90 others remain unassigned. Newly identified products include various small keto carboxylic acids and dicarboxylic acids, several of which are central metabolic intermediates. Also present are glyoxal and methyl glyoxal dialdehydes, recently reported as β-carotene metabolites in plants. Although both compounds at higher concentrations are known to be toxic, at low concentration, methyl glyoxal has been reported to be potentially capable of activating an immune response against microbial infection. In plants, advantage is taken of the electrophilic reactivity of specific apocarotenoids derived from β-carotene oxidation to activate protective defenses. Given the copolymer occurs naturally and is a major product of non-enzymatic β-carotene oxidation in stored plants, by partially sequestering apocarotenoid metabolites, the copolymer may serve to limit potential toxicity and maintain low cellular apocarotenoid concentrations for signaling purposes. In animals, the copolymer may serve as a systemic source of apocarotenoids.
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Affiliation(s)
- Trevor J. Mogg
- Avivagen Inc., 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada
- Avivagen Inc., 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada
| | - Graham W. Burton
- Avivagen Inc., 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada
- Avivagen Inc., 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada
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38
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Kato S, Shimizu N, Ogura Y, Otoki Y, Ito J, Sakaino M, Sano T, Kuwahara S, Takekoshi S, Imagi J, Nakagawa K. Structural Analysis of Lipid Hydroperoxides Using Mass Spectrometry with Alkali Metals. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:2399-2409. [PMID: 34382801 DOI: 10.1021/jasms.1c00039] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lipid oxidation is involved in various biological phenomena (e.g., oxylipin generation and oxidative stress). Of oxidized lipid structures, the hydroperoxyl group position of lipid hydroperoxides (LOOHs) is a critical factor in determining their biological roles. Despite such interest, current methods to determine hydroperoxyl group positions possess some drawbacks such as selectivity. While we previously reported mass spectrometric methods using Na+ for the highly selective determination of hydroperoxyl group positions, nothing was known except for the fact that sodiated LOOHs (mainly linoleate) provide specific fragment ions. Thus, this study was aimed to investigate the effects of different alkali metals on the fragmentation of LOOHs, assuming its further application to analysis of other complex LOOHs. From the analysis of PC 16:0/18:2;OOH (phosphatidylcholine) and FA 18:2;OOH (fatty acid), we found that fragmentation pathways and ion intensities largely depend on the binding position and type of alkali metals (i.e., Li+, Hock fragmentation; Na+ and K+, α-cleavage (Na+ > K+); Rb+ and Cs+, no fragmentation). Furthermore, we proved that this method can be applied to determine the hydroperoxyl group position of esterified lipids (e.g., phospholipids and cholesterol esters) as well as polyunsaturated fatty acids (PUFAs) including n-3, n-6, and n-9 FA. We anticipate that the insights described in this study provide additional unique insights to conventional lipid oxidation research.
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Affiliation(s)
- Shunji Kato
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
| | - Naoki Shimizu
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
| | - Yusuke Ogura
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
| | - Yurika Otoki
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
| | - Junya Ito
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
| | - Masayoshi Sakaino
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
- Food Design Center, J-Oil Mills, Inc., Yokohama, Kanagawa 230-0053, Japan
| | - Takashi Sano
- Food Design Center, J-Oil Mills, Inc., Yokohama, Kanagawa 230-0053, Japan
| | - Shigefumi Kuwahara
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
| | - Susumu Takekoshi
- Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Jun Imagi
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
- Food Design Center, J-Oil Mills, Inc., Yokohama, Kanagawa 230-0053, Japan
| | - Kiyotaka Nakagawa
- J-Oil Mills Innovation Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-0845, Japan
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Bordier C, Escande V, Darcel C. Past and current routes to β-hydroperoxy alcohols: A functional group with high potential in organic synthesis. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Affiliation(s)
- Werner Fudickar
- Department of Chemistry University of Potsdam Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
| | - Torsten Linker
- Department of Chemistry University of Potsdam Karl-Liebknecht-Str. 24-25 14476 Potsdam Germany
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41
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Hassan Z, Stahlberger M, Rosenbaum N, Bräse S. Criegee‐Intermediate über die Ozonolyse hinaus: Ein Einblick in Synthesen und Mechanismen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zahid Hassan
- Institut für Organische Chemie (IOC) Karlsruher Institut für Technologie (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Deutschland
- 3DMM2O – Exzellenzcluster (EXC-2082/1-390761711) Karlsruher Institut für Technologie (KIT) Karlsruhe Deutschland
| | - Mareen Stahlberger
- Institut für Organische Chemie (IOC) Karlsruher Institut für Technologie (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Deutschland
| | - Nicolai Rosenbaum
- Institut für Organische Chemie (IOC) Karlsruher Institut für Technologie (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Deutschland
| | - Stefan Bräse
- Institut für Organische Chemie (IOC) Karlsruher Institut für Technologie (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Deutschland
- 3DMM2O – Exzellenzcluster (EXC-2082/1-390761711) Karlsruher Institut für Technologie (KIT) Karlsruhe Deutschland
- Institut für Biologische und Chemische Systeme –, Funktionelle molekulare Systeme (IBCS-FMS) Karlsruher Institut für Technologie (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland
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42
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Hassan Z, Stahlberger M, Rosenbaum N, Bräse S. Criegee Intermediates Beyond Ozonolysis: Synthetic and Mechanistic Insights. Angew Chem Int Ed Engl 2021; 60:15138-15152. [PMID: 33283439 PMCID: PMC8359312 DOI: 10.1002/anie.202014974] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Indexed: 12/20/2022]
Abstract
After more than 70 years since their discovery, Criegee intermediates (CIs) are back at the forefront of modern chemistry of short-lived reactive intermediates. They play an important role in the mechanistic context of chemical synthesis, total synthesis, pharmaceuticals, and, most importantly, climate-controlling aerosol formation as well as atmospheric chemistry. This Minireview summarizes key aspects of CIs (from the mechanism of formation, for example, by ozonolysis of alkenes and photolysis methods employing diiodo and diazo compounds, to their electronic structures and chemical reactivity), highlights the most recent findings and some landmark results of gas-phase kinetics, and detection/measurements. The recent progress in synthetic and mechanistic studies in the chemistry of CIs provides a guide to illustrate the possibilities for further investigations in this exciting field.
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Affiliation(s)
- Zahid Hassan
- Institute of Organic ChemistryKarlsruhe Institute of TechnologyFritz-Haber-Weg 676131KarlsruheGermany
- 3DMM2O—Cluster of Excellence (EXC-2082/1–390761711)Karlsruhe Institute of Technology (KIT)76131KarlsruheGermany
| | - Mareen Stahlberger
- Institute of Organic ChemistryKarlsruhe Institute of TechnologyFritz-Haber-Weg 676131KarlsruheGermany
| | - Nicolai Rosenbaum
- Institute of Organic ChemistryKarlsruhe Institute of TechnologyFritz-Haber-Weg 676131KarlsruheGermany
| | - Stefan Bräse
- Institute of Organic ChemistryKarlsruhe Institute of TechnologyFritz-Haber-Weg 676131KarlsruheGermany
- 3DMM2O—Cluster of Excellence (EXC-2082/1–390761711)Karlsruhe Institute of Technology (KIT)76131KarlsruheGermany
- Institute of Biological and Chemical Systems (IBCS-FMS)Karlsruhe Institute of Technology (KIT)Hermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
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43
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Louvel D, De Dios Miguel T, Duc Vu N, Duguet N. The Chemistry of β‐Hydroxy Hydroperoxides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dan Louvel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Thomas De Dios Miguel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Nam Duc Vu
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Nicolas Duguet
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
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44
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Ma Z, Mahmudov KT, Aliyeva VA, Gurbanov AV, Guedes da Silva MFC, Pombeiro AJ. Peroxides in metal complex catalysis. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213859] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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45
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Yaremenko IA, Belyakova YY, Radulov PS, Novikov RA, Medvedev MG, Krivoshchapov NV, Korlyukov AA, Alabugin IV, Terent'ev AO. Marriage of Peroxides and Nitrogen Heterocycles: Selective Three-Component Assembly, Peroxide-Preserving Rearrangement, and Stereoelectronic Source of Unusual Stability of Bridged Azaozonides. J Am Chem Soc 2021; 143:6634-6648. [PMID: 33877842 DOI: 10.1021/jacs.1c02249] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Stable bridged azaozonides can be selectively assembled via a catalyst-free three-component condensation of 1,5-diketones, hydrogen peroxide, and an NH-group source such as aqueous ammonia or ammonium salts. This procedure is scalable and can produce gram quantities of bicyclic stereochemically rich heterocycles. The new azaozonides are thermally stable and can be stored at room temperature for several months without decomposition and for at least 1 year at -10 °C. The chemical stability of azaozonides was explored for their subsequent selective transformations including the first example of an aminoperoxide rearrangement that preserves the peroxide group. The amino group in aminoperoxides has remarkably low nucleophilicity and does not participate in the usual amine alkylation and acylation reactions. These observations and the 15 pKa units decrease in basicity in comparison with a typical dialkyl amine are attributed to the strong hyperconjugative nN→σ*C-O interaction with the two antiperiplanar C-O bonds. Due to the weakness of the complementary nO→σ*C-N donation from the peroxide oxygens (a consequence of "inverse α-effect"), this interaction depletes electron density from the NH moiety, protects it from oxidation, and makes it similar in properties to an amide.
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Affiliation(s)
- Ivan A Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Yulia Yu Belyakova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Peter S Radulov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Roman A Novikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Michael G Medvedev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Nikolai V Krivoshchapov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Alexander A Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, 119991 Moscow, Russian Federation
| | - Igor V Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
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46
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Wang B, Xu B, Xun W, Guo Y, Zhang J, Qiu FG. A General Strategy for the Construction of Calyciphylline A‐Type Alkaloids: Divergent Total Syntheses of (−)‐Daphenylline and (−)‐Himalensine A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016212] [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)
- Bingyang Wang
- Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Bo Xu
- Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wen Xun
- Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yiming Guo
- Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jing Zhang
- Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Fayang G. Qiu
- Guangzhou Institutes of Biomedicine and Health Chinese Academy of Sciences Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
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47
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Wang B, Xu B, Xun W, Guo Y, Zhang J, Qiu FG. A General Strategy for the Construction of Calyciphylline A-Type Alkaloids: Divergent Total Syntheses of (-)-Daphenylline and (-)-Himalensine A. Angew Chem Int Ed Engl 2021; 60:9439-9443. [PMID: 33569888 DOI: 10.1002/anie.202016212] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/31/2021] [Indexed: 12/16/2022]
Abstract
An efficient general strategy for the synthesis of the Daphniphyllum alkaloids via the rapid construction of a common core intermediate has been established, based on which a divergent total synthesis of (-)-daphenylline and (-)-himalensine A has been accomplished in 16 and 19 steps, respectively. The present work features an enantioselective Mg(ClO4 )2 -catalyzed intramolecular amidocyclization to construct the aza-bridged core structure; a Cu-catalyzed intramolecular cyclopropanation and subsequent phosphine-catalyzed Cope-type rearrangement to furnish the himalensine A scaffold; and a one-pot Diels-Alder/aromatization method to assemble the aromatic skeleton of daphenylline.
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Affiliation(s)
- Bingyang Wang
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Xu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wen Xun
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yiming Guo
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Zhang
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fayang G Qiu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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48
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Montagut E, Martin-Gomez MT, Marco MP. An Immunochemical Approach to Quantify and Assess the Potential Value of the Pseudomonas Quinolone Signal as a Biomarker of Infection. Anal Chem 2021; 93:4859-4866. [PMID: 33691411 PMCID: PMC8479725 DOI: 10.1021/acs.analchem.0c04731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 03/04/2021] [Indexed: 01/20/2023]
Abstract
Quorum sensing (QS) is a bacterial cell density-based communication system using low molecular weight signals called autoinducers (AIs). Identification and quantification of these molecules could provide valuable information related to the stage of colonization or infection as well as the stage of the disease. With this scenario, we report here for the first time the development of antibodies against the PQS (pseudomonas quinolone signal), the main signaling molecule from the pqs QS system of Pseudomonas aeruginosa, and the development of a microplate-based enzyme-linked immunosorbent assay (ELISA) able of quantifying this molecule in complex biological media in the low nanometer range (LOD, 0.36 ± 0.14 nM in culture broth media). Moreover, the PQS ELISA here reported has been found to be robust and reliable, providing accurate results in culture media. The technique allowed us to follow up the PQS profile of the release of bacterial clinical isolates obtained from patients of different disease status. A clear correlation was found between the PQS immunoreactivity equivalents and the chronic or acute infection conditions, which supports the reported differences on virulence and behavior of these bacterial strains due to their adaptation capability to the host environment. The results obtained point to the potential of the PQS as a biomarker of infection and to the value of the antibodies and the technology developed for improving diagnosis and management of P. aeruginosa infections based on the precise identification of the pathogen, appropriate stratification of the patients according to their disease status, and knowledge of the disease progression.
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Affiliation(s)
- Enrique
J. Montagut
- Nanobiotechnology
for Diagnostics (Nb4D), Department of Surfactants and Nanobiotechnology, Institute for Advanced Chemistry of Catalonia (IQAC)
of the Spanish Council for Scientific Research (CSIC), 08034 Barcelona, Spain
- CIBER
de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - M. Teresa Martin-Gomez
- Microbiology
Department, Vall d’Hebron University
Hospital (VHUH), 08035 Barcelona, Spain
- Genetics
and Microbiology Department, Universitat
Autònoma de Barcelona (UAB), 08193 Barcelona, Spain
| | - M. Pilar Marco
- Nanobiotechnology
for Diagnostics (Nb4D), Department of Surfactants and Nanobiotechnology, Institute for Advanced Chemistry of Catalonia (IQAC)
of the Spanish Council for Scientific Research (CSIC), 08034 Barcelona, Spain
- CIBER
de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Jordi Girona 18-26, 08034 Barcelona, Spain
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Dutka V, Oshchapovska N. Adsorption of Oligomeric Peroxides on Aerosil and Magnesium Oxide and Their Behavior on the Water-Air Phases Interface. CHEMISTRY & CHEMICAL TECHNOLOGY 2021. [DOI: 10.23939/chcht15.01.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Oligomeric peroxide adsorption of sebacic acid on aerosil and magnesium oxide was studied. Adsorption process parameters were found. It is shown that the adsorption takes place through the hydrogen bonds formation between OH– groups of adsorbents surface and peroxide groups. The adsorption process suggests the behavior of peroxide compounds on the water-air phase’s interface. Monomolecular film formations on water surface for oligomeric peroxides were studied. It was found that calculated values of the area extrapolated to zero pressure (S0) depend on the solvent which was used to apply the peroxide in the phases interface. Oligomeric peroxide monolayers considered as condensation-type monolayers. Thermal decomposition of oligomeric peroxide and its di- and monoperoxide analogues was studied. It was shown that total constants of thermal degradation rate k for oligomeric peroxide are higher than those for di- and monoperoxide analogues. There is a correlation between S0 calculated values and the constants of thermal degradation rate for oligoperoxide. The less is S0 value the higher is k value. The conformational state of the macromolecule was preserved during transferring the oligomeric peroxide solution in an organic solvent to the phases interface that affects k values.
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Ye F, Liu Q, Cui R, Xu D, Gao Y, Chen H. Diverse Functionalization of Tetrahydro-β-carbolines or Tetrahydro-γ-carbolines via Oxidative Coupling Rearrangement. J Org Chem 2020; 86:794-812. [PMID: 33232143 DOI: 10.1021/acs.joc.0c02351] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report herein diverse functionalization of tetrahydro-β-carbolines (THβCs) or tetrahydro-γ-carbolines (THγCs) via oxidative coupling rearrangement. The treatment of THβCs or THγCs with t-BuOOH (TBHP) afforded 3-peroxyindolenines, followed by HCl catalyzed indolation to form unexpected 2-indolyl-3-peroxyindolenines. Further rearrangement of these peroxides allows for rapid access to a skeletally diverse chemical library in good to excellent yields.
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Affiliation(s)
- Fu Ye
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Qing Liu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Ranran Cui
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Dekang Xu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Yu Gao
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Haijun Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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