1
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Monteith JJ, Rousseaux SAL. A Dual Ni/Photoredox Cross-Coupling Approach toward Mandelic Acids. Org Lett 2024; 26:4566-4570. [PMID: 38758597 DOI: 10.1021/acs.orglett.4c01547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024]
Abstract
Mandelic acid derivatives represent a valuable class of compounds due to their wide use in synthetic organic chemistry and the pharmaceutical sector. Herein, we report a novel reductive Ni/photoredox cross-coupling of readily accessible, bench stable N-alkoxyphthalimides and aryl halides to prepare unprotected mandelic acid ester derivatives. Mechanistic experiments suggest that this cross-coupling likely proceeds via a pathway that is distinct from previous reports using similar redox-active alkoxy radical precursors.
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Affiliation(s)
- John J Monteith
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Sophie A L Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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2
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Mo MY, Wang XJ, Shen RZ, Hu CY, Li XC, Li GW, Liu LT. Enantiospecific Analysis of Carboxylic Acids Using Cinchona Alkaloid Dimers as Chiral Solvating Agents. Anal Chem 2024; 96:7487-7496. [PMID: 38695134 DOI: 10.1021/acs.analchem.4c00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2024]
Abstract
Cinchona alkaloid derivatives as Brønsted base catalysts have attracted considerable attention in the field of asymmetric catalysis. However, their potential application as chiral solvating agents has not been described. In this research, we investigated the use of the Cinchona alkaloid dimer, namely, (DHQ)2PHAL, as a chiral solvating agent for discerning various mandelic acid derivatives through 1H NMR spectroscopy. The addition of catalytic amounts of DMAP facilitated this process. Our experimental results demonstrate that dimeric (DHQ)2PHAL exhibits remarkable chiral discrimination properties regarding the diagnostic split protons of 1H NMR signals (including 24 examples, up to 0.321 ppm). Furthermore, it serves as an excellent chiral discriminating agent and provides good resolution for racemic chiral phosphoric acid as determined by 31P NMR spectroscopy. The quality of enantiodifferentiation has also been evaluated by means of the parameter "resolution (Rs)". Significantly, this class of CSAs based on (alkaloid)2linker systems with an azaaromatic linker can be directly employed, which is commercially available in an enantiopure form at very low cost and exhibits promising potential in determining the enantiopurity of α-hydroxy acids by chemoselective and biocatalytic reactions.
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Affiliation(s)
- Ming-Yang Mo
- School of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Xiao-Juan Wang
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Ren-Zeng Shen
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Chang-Yan Hu
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Xue-Chun Li
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Gao-Wei Li
- School of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Lan-Tao Liu
- School of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
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3
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Zhou J, Wei Y, Wu J, Li S, Xu Z, Peng Y. Novel ethylenediamine-β-cyclodextrin grafted membranes for the chiral separation of mandelic acid and its derivatives. Chirality 2024; 36:e23662. [PMID: 38572642 DOI: 10.1002/chir.23662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/27/2024] [Accepted: 03/02/2024] [Indexed: 04/05/2024]
Abstract
In the present study, flat cellulose acetate ultrafiltration membranes were prepared first by nonsolvent induced phase separation method. Then chiral membranes for separating the enantiomers were prepared by grafting the ultrafiltration membranes using ethylenediamine-β-cyclodextrin as the chiral selector and epichlorohydrin as the spacer arm. The pure water permeability of the ultrafiltration membrane was around 115 L·m-2·h-1·bar-1. The properties of the chiral membranes were characterized using infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The chiral membrane performance in enantiomer separation was evaluated with racemates, such as mandelic acid (MA), 2-chloromandelic acid (2-ClMA), 4-chloromandelic acid (4-ClMA), and methyl mandelate (MM). The influence of feed concentration on the separation efficiency was also investigated. The results indicated that the enantiomeric excess percentages (e.e%) of the racemic mixtures for these four chiral compounds were up to 31.8%, 25.4%, 17.8%, and 32.6%, respectively. The binding free energy of the chiral selector with the (S)-enantiomer calculated by molecular dynamics simulations was stronger than that with the (R)-enantiomer, which was consistent with the experimental results (higher concentration of (R)-enantiomer in the permeate). This supports the affinity absorption-separation mechanism.
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Affiliation(s)
- Junjie Zhou
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yongming Wei
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Jiaojie Wu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Shuqin Li
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Zhenliang Xu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yangfeng Peng
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
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4
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Zdun B, Reiter T, Kroutil W, Borowiecki P. Chemoenzymatic Synthesis of Tenofovir. J Org Chem 2023; 88:11045-11055. [PMID: 37467462 PMCID: PMC10407936 DOI: 10.1021/acs.joc.3c01005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Indexed: 07/21/2023]
Abstract
We report on novel chemoenzymatic routes toward tenofovir using low-cost starting materials and commercial or homemade enzyme preparations as biocatalysts. The biocatalytic key step was accomplished either via stereoselective reduction using an alcohol dehydrogenase or via kinetic resolution using a lipase. By employing a suspension of immobilized lipase from Burkholderia cepacia (Amano PS-IM) in a mixture of vinyl acetate and toluene, the desired (R)-ester (99% ee) was obtained on a 500 mg scale (60 mM) in 47% yield. Alternatively, stereoselective reduction of 1-(6-chloro-9H-purin-9-yl) propan-2-one (84 mg, 100 mM) catalyzed by lyophilized E. coli cells harboring recombinant alcohol dehydrogenase (ADH) from Lactobacillus kefir (E. coli/Lk-ADH Prince) allowed one to reach quantitative conversion, 86% yield and excellent optical purity (>99% ee) of the corresponding (R)-alcohol. The key (R)-intermediate was transformed into tenofovir through "one-pot" aminolysis-hydrolysis of (R)-acetate in NH3-saturated methanol, alkylation of the resulting (R)-alcohol with tosylated diethyl(hydroxymethyl) phosphonate, and bromotrimethylsilane (TMSBr)-mediated cleavage of the formed phosphonate ester into the free phosphonic acid. The elaborated enzymatic strategy could be applicable in the asymmetric synthesis of tenofovir prodrug derivatives, including 5'-disoproxil fumarate (TDF, Viread) and 5'-alafenamide (TAF, Vemlidy). The molecular basis of the stereoselectivity of the employed ADHs was revealed by molecular docking studies.
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Affiliation(s)
- Beata Zdun
- Laboratory
of Biocatalysis and Biotransformation, Department of Drugs Technology
and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
| | - Tamara Reiter
- Institute
of Chemistry, University of Graz, NAWI Graz,
BioTechMed Graz, Field of Excellence BioHealth, Heinrichstrasse 28, 8010 Graz, Austria
| | - Wolfgang Kroutil
- Institute
of Chemistry, University of Graz, NAWI Graz,
BioTechMed Graz, Field of Excellence BioHealth, Heinrichstrasse 28, 8010 Graz, Austria
| | - Paweł Borowiecki
- Laboratory
of Biocatalysis and Biotransformation, Department of Drugs Technology
and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
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5
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Liu C, Marhaba M, Dilshat A, Zhu W, Xia K, Mao Z, Ablimit A. Nickel-catalyzed esterification of mandelic acids with alcohols. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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6
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Biocatalytic hydrogen-transfer to access enantiomerically pure proxyphylline, xanthinol, and diprophylline. Bioorg Chem 2022; 127:105967. [DOI: 10.1016/j.bioorg.2022.105967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/24/2022]
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7
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Microbial Lipases and Their Potential in the Production of Pharmaceutical Building Blocks. Int J Mol Sci 2022; 23:ijms23179933. [PMID: 36077332 PMCID: PMC9456414 DOI: 10.3390/ijms23179933] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Processes involving lipases in obtaining active pharmaceutical ingredients (APIs) are crucial to increase the sustainability of the industry. Despite their lower production cost, microbial lipases are striking for their versatile catalyzing reactions beyond their physiological role. In the context of taking advantage of microbial lipases in reactions for the synthesis of API building blocks, this review focuses on: (i) the structural origins of the catalytic properties of microbial lipases, including the results of techniques such as single particle monitoring (SPT) and the description of its selectivity beyond the Kazlauskas rule as the “Mirror-Image Packing” or the “Key Region(s) rule influencing enantioselectivity” (KRIE); (ii) immobilization methods given the conferred operative advantages in industrial applications and their modulating capacity of lipase properties; and (iii) a comprehensive description of microbial lipases use as a conventional or promiscuous catalyst in key reactions in the organic synthesis (Knoevenagel condensation, Morita–Baylis–Hillman (MBH) reactions, Markovnikov additions, Baeyer–Villiger oxidation, racemization, among others). Finally, this review will also focus on a research perspective necessary to increase microbial lipases application development towards a greener industry.
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8
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Wu Z, Wu Z, Zhang W, Gu Q, You S. Rh(
III
)‐Catalyzed Enantioselective Intermolecular Aryl C−H Bond Addition to Aldehydes. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200553] [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)
- Zhi‐Jie Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road Shanghai 201210 China
| | - Zhuo Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wen‐Wen Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road Shanghai 201210 China
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9
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Enzymatic kinetic resolution in flow for chiral mandelic acids. J Flow Chem 2022. [DOI: 10.1007/s41981-022-00219-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Borowiecki P, Rudzka A, Reiter T, Kroutil W. Chemoenzymatic deracemization of lisofylline catalyzed by a (laccase/TEMPO)-alcohol dehydrogenase system. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00145d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This article reports on a novel biocatalytic method for the synthesis of both enantiomers of lisofylline based on Trametes versicolor laccase, TEMPO as a redox mediator and stereocomplementary recombinant alcohol dehydrogenases as biocatalysts.
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Affiliation(s)
- Paweł Borowiecki
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa St. 75, 00-662 Warsaw, Poland
| | - Aleksandra Rudzka
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa St. 75, 00-662 Warsaw, Poland
| | - Tamara Reiter
- Institute of Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Field of Excellence BioHealth, Heinrichstrasse 28, 8010 Graz, Austria
| | - Wolfgang Kroutil
- Institute of Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Field of Excellence BioHealth, Heinrichstrasse 28, 8010 Graz, Austria
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11
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Jakob B, Slimani I, Diehl A, Hamdi N, Manolikakes G. Palladium‐Catalyzed Decarboxylative 1,2‐Addition of Carboxylic Acids to Glyoxylic Acid Esters. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100919] [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)
- Bastian Jakob
- Department of Chemistry TU Kaiserslautern Erwin-Schrödinger-Str. Geb. 54 67663 Kaiserslautern Germany
| | - Ichraf Slimani
- Department of Chemistry TU Kaiserslautern Erwin-Schrödinger-Str. Geb. 54 67663 Kaiserslautern Germany
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09) Higher Institute of Environmental Sciences and Technology University of Carthage B 77 – P.O. Box 77 1054 Amilcar Hammam-Lif Tunesia
| | - Andreas Diehl
- Department of Chemistry TU Kaiserslautern Erwin-Schrödinger-Str. Geb. 54 67663 Kaiserslautern Germany
| | - Naceur Hamdi
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09) Higher Institute of Environmental Sciences and Technology University of Carthage B 77 – P.O. Box 77 1054 Amilcar Hammam-Lif Tunesia
- Department of Chemistry College of Science and Arts at ArRass Qassim University, PO BOX 53 ArRass 51921 Saudi Arabia
| | - Georg Manolikakes
- Department of Chemistry TU Kaiserslautern Erwin-Schrödinger-Str. Geb. 54 67663 Kaiserslautern Germany
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12
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Borowiecki P, Zdun B, Dranka M. Chemoenzymatic enantioselective and stereo-convergent syntheses of lisofylline enantiomers via lipase-catalyzed kinetic resolution and optical inversion approach. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Borowiecki P, Młynek M, Dranka M. Chemoenzymatic synthesis of enantiomerically enriched diprophylline and xanthinol nicotinate. Bioorg Chem 2020; 106:104448. [PMID: 33229120 DOI: 10.1016/j.bioorg.2020.104448] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 01/01/2023]
Abstract
A concise chemoenzymatic route toward enantiomerically enriched active pharmaceutical ingredients (API) - diprophylline and xanthinol nicotinate - is reported for the first time. The decisive step is an enantioselective lipase-mediated methanolysis of racemic chlorohydrin-synthon acetate, namely 1-chloro-3-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)propan-2-yl acetate, performed under kinetically-controlled conditions on a preparative 500 mg-scale. The best results in terms of reaction enantioselectivity (E = 14) were obtained for the enantiomers resolution performed with lipase type B from Candida antarctica immobilized on acrylic resin (CAL-B, Novozym 435) suspended in homophasic acetonitrile-methanol mixture. The elaborated biocatalytic system furnished the key chlorohydrin intermediate (in 71% ee and 38% yield), which was then smoothly converted into enantioenriched active agents: (R)-(-)-diprophylline (57% ee) and (S)-(+)-xanthinol nicotinate (65% ee). To support the assignment of absolute configurations of EKR-products as well as to confirm the stereochemical outcome of the remaining reaction steps, docking studies toward the prediction of enantiomers binding selectivity in CAL-B active site as well as the respective chemical correlations with enantiomerically enriched analytical standards obtained from commercially available (R)-(-)-epichlorohydrin, were applied. In addition, single-crystal X-ray diffraction (XRD) analyses were performed for the synthesized optically active APIs furnishing by this manner a first crystal structures of nicotinic acid salt of xanthinol.
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Affiliation(s)
- Paweł Borowiecki
- Warsaw University of Technology, Department of Drugs Technology and Biotechnology, Laboratory of Biocatalysis and Biotransformations, Koszykowa St. 75, 00-662 Warsaw, Poland.
| | - Mateusz Młynek
- Warsaw University of Technology, Department of Drugs Technology and Biotechnology, Laboratory of Biocatalysis and Biotransformations, Koszykowa St. 75, 00-662 Warsaw, Poland
| | - Maciej Dranka
- Warsaw University of Technology, Faculty of Chemistry, Department of Inorganic Chemistry and Solid State Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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14
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Biocatalysis at Extreme Temperatures: Enantioselective Synthesis of both Enantiomers of Mandelic Acid by Transesterification Catalyzed by a Thermophilic Lipase in Ionic Liquids at 120 °C. Catalysts 2020. [DOI: 10.3390/catal10091055] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The use of biocatalysts in organic chemistry for catalyzing chemo-, regio- and stereoselective transformations has become an usual tool in the last years, both at lab and industrial scale. This is not only because of their exquisite precision, but also due to the inherent increase in the process sustainability. Nevertheless, most of the interesting industrial reactions involve water-insoluble substrates, so the use of (generally not green) organic solvents is generally required. Although lipases are capable of maintaining their catalytic precision working in those solvents, reactions are usually very slow and consequently not very appropriate for industrial purposes. Increasing reaction temperature would accelerate the reaction rate, but this should require the use of lipases from thermophiles, which tend to be more enantioselective at lower temperatures, as they are more rigid than those from mesophiles. Therefore, the ideal scenario would require a thermophilic lipase capable of retaining high enantioselectivity at high temperatures. In this paper, we describe the use of lipase from Geobacillus thermocatenolatus as catalyst in the ethanolysis of racemic 2-(butyryloxy)-2-phenylacetic to furnish both enantiomers of mandelic acid, an useful intermediate in the synthesis of many drugs and active products. The catalytic performance at high temperature in a conventional organic solvent (isooctane) and four imidazolium-based ionic liquids was assessed. The best results were obtained using 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMIMBF4) and 1-ethyl-3-methyl imidazolium hexafluorophosphate (EMIMPF6) at temperatures as high as 120 °C, observing in both cases very fast and enantioselective kinetic resolutions, respectively leading exclusively to the (S) or to the (R)-enantiomer of mandelic acid, depending on the anion component of the ionic liquid.
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15
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Electrochemical behavior of plant growth stimulator 1-naphthaleneacetic acid and its voltammetric determination using boron doped diamond electrode. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.113855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Germer P, Gauchenova E, Walter L, Müller M. Thiamine Diphosphate Dependent KdcA‐Catalysed Formyl Elongation of Aldehydes. ChemCatChem 2019. [DOI: 10.1002/cctc.201900712] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Philipp Germer
- Institut für Pharmazeutische WissenschaftenAlbert-Ludwigs-Universität Freiburg Albertstrasse 25 Freiburg 79104 Germany
| | - Ekaterina Gauchenova
- Institut für Pharmazeutische WissenschaftenAlbert-Ludwigs-Universität Freiburg Albertstrasse 25 Freiburg 79104 Germany
| | - Lydia Walter
- Institut für Pharmazeutische WissenschaftenAlbert-Ludwigs-Universität Freiburg Albertstrasse 25 Freiburg 79104 Germany
| | - Michael Müller
- Institut für Pharmazeutische WissenschaftenAlbert-Ludwigs-Universität Freiburg Albertstrasse 25 Freiburg 79104 Germany
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17
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Co-immobilization of Short-Chain Dehydrogenase/Reductase and Glucose Dehydrogenase for the Efficient Production of (±)-Ethyl Mandelate. Catal Letters 2019. [DOI: 10.1007/s10562-019-02727-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Senboku H, Sakai K, Fukui A, Sato Y, Yamauchi Y. Efficient Synthesis of Mandel Acetates by Electrochemical Carboxylation of Benzal Diacetates. ChemElectroChem 2019. [DOI: 10.1002/celc.201900200] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hisanori Senboku
- Faculty of EngineeringHokkaido University Kita 13 Nishi 8, Kita-ku, Sapporo Hokkaido 060-8628 Japan
| | - Kanae Sakai
- Graduate School of EngineeringHokkaido University Kita 13 Nishi 8, Kita-ku, Sapporo Hokkaido 060-8628 Japan
| | - Akihiro Fukui
- Graduate School of Chemical Sciences and EngineeringHokkaido University Kita 13 Nishi 8, Kita-ku, Sapporo Hokkaido 060-8628 Japan
| | - Yusuke Sato
- Graduate School of Chemical Sciences and EngineeringHokkaido University Kita 13 Nishi 8, Kita-ku, Sapporo Hokkaido 060-8628 Japan
| | - Yusuke Yamauchi
- Graduate School of EngineeringHokkaido University Kita 13 Nishi 8, Kita-ku, Sapporo Hokkaido 060-8628 Japan
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19
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Efficient Biocatalytic Synthesis of Chiral Intermediate of Pregabalin Using Immobilized Talaromyces thermophilus Lipase. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6192059. [PMID: 30515409 PMCID: PMC6236560 DOI: 10.1155/2018/6192059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/10/2018] [Accepted: 10/15/2018] [Indexed: 11/17/2022]
Abstract
A mutant L206F/P207F/L259F of Talaromyces thermophilus lipase (TTL) exhibited high hydrolytic activity towards 2-carboxyethyl-3-cyano-5-methylhexanoic acid ethyl ester (CNDE) for synthesis of (S)-2-carboxyethyl-3-cyano-5-methylhexanoic acid (S-CCMA), a key chiral intermediate of pregabalin. However, low conversion at high CNDE concentration and unreusability of the free TTL mutant restricted its industrial applications. In this study, the TTL mutant was immobilized onto epoxy resin and its catalytic properties for kinetic resolution of CNDE were investigated. Under the optimized conditions, the immobilized lipase exhibited an increased catalytic efficiency even at a CNDE concentration of 3 M with 49.7% conversion and 95% ee p. The conversion retained higher than 46.3% even after 10 times repeated use of the immobilized lipase in n-heptane-water biphasic system. These results demonstrated great potential of the immobilized TTL mutant for industrial production of the chiral intermediate of pregabalin.
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20
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Borowiecki P, Wińska P, Bretner M, Gizińska M, Koronkiewicz M, Staniszewska M. Synthesis of novel proxyphylline derivatives with dual Anti-Candida albicans and anticancer activity. Eur J Med Chem 2018. [PMID: 29533875 DOI: 10.1016/j.ejmech.2018.02.077] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Three out of 16 newly synthesized 1,3-dimethylxanthine derivatives (proxyphylline analogues) exhibited consistencies between antifungal and anticancer properties. Proxyphylline possessing 1-(10H-phenothiazin-10-yl)propan-2-yl (6) and polybrominated benzimidazole (41) or benzotriazole moiety (42) remained selectively cidal against Candida albicans (lg R ≥ 3 at conc. of 31, 36 and 20 μM, respectively) however not against normal mammalian Vero cell line in vitro (IC50 ≥ 280 μM) and Galleria mellonella in vivo. These compounds also displayed moderate antineoplastic activity against human breast adenocarcinoma (MCF-7) cell line (EC50 = 80 μM) and high against peripheral blood T lymphoblast (CCRF-CEM) (EC50 = 6.3-6.5 μM). In addition, 6 and 42 exerted: (1) dual activity against fungal adhesion and damage mature biofilm; (2) necrosis of planktonic cells due to loss of membrane function and of structural integrity; (3) biochemical (inhibition of sessile cell respiration) and morphological changes in cell wall polysaccharide contents. Therefore, leading proxyphylline derivatives can be employed to prevent cancer-associated biofilm Candida infections.
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Affiliation(s)
- Paweł Borowiecki
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Patrycja Wińska
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Maria Bretner
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Małgorzata Gizińska
- National Institute of Public Health-National Institute of Hygiene, Chocimska 24, 00-791 Warsaw, Poland
| | | | - Monika Staniszewska
- National Institute of Public Health-National Institute of Hygiene, Chocimska 24, 00-791 Warsaw, Poland.
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