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Grincevičienė Š, Vaitkienė D, Kanopienė D, Vansevičiūtė R, Tykvart J, Sukovas A, Celiešiūtė J, Ivanauskaitė Didžiokienė E, Čižauskas A, Laurinavičienė A, Král V, Hlavačková A, Zemanová J, Stravinskienė D, Sližienė A, Petrošiūtė A, Petrauskas V, Balsytė R, Grincevičius J, Navratil V, Jahn U, Konvalinka J, Žvirblienė A, Matulis D, Matulienė J. Factors, associated with elevated concentration of soluble carbonic anhydrase IX in plasma of women with cervical dysplasia. Sci Rep 2022; 12:15397. [PMID: 36100684 PMCID: PMC9470728 DOI: 10.1038/s41598-022-19492-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 08/30/2022] [Indexed: 12/24/2022] Open
Abstract
Precancerous lesions of human cervix uteri have a tendency for regression or progression. In cervical intraepithelial neoplasia grade 2 (CINII) case there is an uncertainty if a lesion will progress or regress. The carbonic anhydrase IX (CAIX) enzyme is overexpressed in cervical cancer which is more sensitive to radiotherapy. CAIX is associated with poor prognosis in solid hypoxic tumors. The aim of this study was to determine factors related to elevated soluble CAIX (s-CAIX) in high-grade intraepithelial lesion (HSIL) cases. Methods. Patients diagnosed with HSIL (N = 77) were included into the research group whereas without HSIL (N = 72)—the control group. Concentration of the soluble CAIX (s-CAIX) in plasma was determined by the DIANA ligand-antibody-based method. C. trachomatis was detected from cervical samples by PCR. Primary outcomes were risk factors elevating s-CAIX level in HSIL group. Non-parametric statistical analysis methods were used to calculate correlations. Results. The s-CAIX level in patients with HSIL was elevated among older participants (rs = 0.27, p = 0.04) and with C. trachomatis infection (p = 0.028). Among heavy smokers with HSIL, the concentration of s-CAIX was higher in older women (rs = 0.52, p = 0.005), but was not related to the age of heavy smokers’ controls (τ = 0.18 p = 0.40). Conclusion. The concentration of s-CAIX was higher among older, heavy smoking and diagnosed with C. trachomatis patients. All these factors increased the risk for HSIL progression.
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Abstract
A unified approach to meroterpenoids applanatumols B, V, W, X, and Y produced by the medicinal fungus Ganoderma applanatum and 2'-epi-spiroapplanatumine O is presented. The key synthetic sequence consists of a tandem anionic ketone allylation/oxy-Cope rearrangement/α-oxygenation furnishing an α-aminoxy ketone and a persistent radical effect-based 5-exo-trig cyclization leading to the trisubstituted cyclopentane core. The relative configuration of applanatumol V has to be revised. Some compounds display significant cytotoxic and antioxidant properties.
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Affiliation(s)
- Michal Šimek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Kateřina Bártová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Samy Issad
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Miroslav Hájek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
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Zelenka J, Pereverzev A, Jahn U, Roithová J. Sulfonyl Nitrene and Amidyl Radical: Structure and Reactivity. Chemistry 2022; 28:e202104493. [PMID: 35266598 PMCID: PMC9323475 DOI: 10.1002/chem.202104493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Indexed: 11/10/2022]
Abstract
Photocatalytic generation of nitrenes and radicals can be used to tune or even control their reactivity. Photocatalytic activation of sulfonyl azides leads to the elimination of N2 and the resulting reactive species initiate C−H activations and amide formation reactions. Here, we present reactive radicals that are generated from sulfonyl azides: sulfonyl nitrene radical anion, sulfonyl nitrene and sulfonyl amidyl radical, and test their gas phase reactivity in C−H activation reactions. The sulfonyl nitrene radical anion is the least reactive and its reactivity is governed by the proton coupled electron transfer mechanism. In contrast, sulfonyl nitrene and sulfonyl amidyl radicals react via hydrogen atom transfer pathways. These reactivities and detailed characterization of the radicals with vibrational spectroscopy and with DFT calculations provide information necessary for taking control over the reactivity of these intermediates.
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Affiliation(s)
- Jan Zelenka
- Department of Spectroscopy and Catalysis Institute for Molecules and Materials Radboud University Nijmegen, Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Aleksandr Pereverzev
- Department of Spectroscopy and Catalysis Institute for Molecules and Materials Radboud University Nijmegen, Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Jana Roithová
- Department of Spectroscopy and Catalysis Institute for Molecules and Materials Radboud University Nijmegen, Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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Hidasová D, Pohl R, Císařová I, Jahn U. A Diastereoselective Catalytic Approach to Pentasubstituted Pyrrolidines by Tandem Anionic‐Radical Cross‐Over Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Denisa Hidasová
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science Charles University Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 166 10 Prague 6 Czech Republic
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Venugopal N, Moser J, Vojtíčková M, Císařová I, König B, Jahn U. Single Electron Transfer‐Induced Selective α‐Oxygenation of Glycine Derivatives. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Navyasree Venugopal
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Johannes Moser
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93040 Regensburg Germany
| | - Margaréta Vojtíčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 12843 Prague 2 Czech Republic
| | - Burkhard König
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93040 Regensburg Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
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Abstract
The Baeyer-Villiger or Beckmann rearrangements are established methods for the cleavage of ketone derivatives under acidic conditions, proceeding for unsymmetrical precursors selectively at the more substituted site. However, the fragmentation regioselectivity cannot be switched and fragmentation at the less-substituted terminus is so far not possible. We report here that the reaction of ketone enolates with commercial alkyl nitrites provides a direct and regioselective way of fragmenting ketones into esters and oximes or ω-hydroxyimino esters, respectively. A comprehensive study of the scope of this reaction with respect to ketone classes and alkyl nitrites is presented. Control over the site of cleavage is gained through regioselective enolate formation by various bases. Oxidation of kinetic enolates of unsymmetrical ketones leads to the otherwise unavailable "anti-Beckmann" cleavage at the less-substituted side chain, while cleavage of thermodynamic enolates of the same ketones represents an alternative to the Baeyer-Villiger oxidation or the Beckmann rearrangement under basic conditions. The method is suited for the transformation of natural products and enables access to orthogonally reactive dicarbonyl compounds.
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Affiliation(s)
- Tomáš Mašek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10 Prague 6, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10 Prague 6, Czech Republic
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Vazdar K, Margetić D, Kovačević B, Sundermeyer J, Leito I, Jahn U. Design of Novel Uncharged Organic Superbases: Merging Basicity and Functionality. Acc Chem Res 2021; 54:3108-3123. [PMID: 34308625 DOI: 10.1021/acs.accounts.1c00297] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
ConspectusOne of the constant challenges of synthetic chemistry is the molecular design and synthesis of nonionic, metal-free superbases as chemically stable neutral organic compounds of moderate molecular weight, intrinsically high thermodynamic basicity, adaptable kinetic basicity, and weak or tunable nucleophilicity at their nitrogen, phosphorus, or carbon basicity centers. Such superbases can catalyze numerous reactions, ranging from C-C bond formation to cycloadditions and polymerization, to name just a few. Additional benefits of organic superbases, as opposed to their inorganic counterparts, are their solubility in organic reaction media, mild reaction conditions, and higher selectivity. Approaching such superbasic compounds remains a continuous challenge. However, recent advances in synthetic methodology and theoretical understanding have resulted in new design principles and synthetic strategies toward superbases. Our computational contributions have demonstrated that the gas-phase basicity region of 350 kcal mol-1 and even beyond is easily reachable by organosuperbases. However, despite record-high basicities, the physical limitations of many of these compounds become quickly evident. The typically large molecular weight of these molecules and their sensitivity to ordinary reaction conditions prevent them from being practical, even though their preparation is often not too difficult. Thus, obviously structural limitations with respect to molecular weight and structural complexity must be imposed on the design of new synthetically useful organic superbases, but strategies for increasing their basicity remain important.The contemporary design of novel organic superbases is illustrated by phosphazenyl phosphanes displaying gas-phase basicities (GB) above 300 kcal mol-1 but having molecular weights well below 1000 g·mol-1. This approach is based on a reconsideration of phosphorus(III) compounds, which goes along with increasing their stability in solution. Another example is the preparation of carbodiphosphoranes incorporating pyrrolidine, tetramethylguanidine, or hexamethylphosphazene as a substituent. With gas-phase proton affinities of up to 300 kcal mol-1, they are among the top nonionic carbon bases on the basicity scale. Remarkably, the high basicity of these compounds is achieved at molecular weights of around 600 g·mol-1. Another approach to achieving high basicity through the cooperative effect of multiple intramolecular hydrogen bonding, which increases the stabilization of conjugate acids, has recently been confirmed.This Account focuses on our efforts to produce superbasic molecules that embody many desirable traits, but other groups' approaches will also be discussed. We reveal the crucial structural features of superbases and place them on known basicity scales. We discuss the emerging potential and current limits of their application and give a general outlook into the future.
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Affiliation(s)
- Katarina Vazdar
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, v.v.i. Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | | | | | - Jörg Sundermeyer
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Ivo Leito
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, v.v.i. Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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Smrček J, Hájek M, Hodek O, Čížek K, Pohl R, Jahn E, Galano JM, Oger C, Durand T, Cvačka J, Jahn U. First Total Synthesis of Phytoprostanes with Prostaglandin-Like Configuration, Evidence for Their Formation in Edible Vegetable Oils and Orienting Study of Their Biological Activity. Chemistry 2021; 27:9556-9562. [PMID: 33904184 DOI: 10.1002/chem.202100872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Indexed: 11/09/2022]
Abstract
Phytoprostanes (PhytoP) are natural products, which form in plants under oxidative stress conditions from α-linolenic acid. However, their epimers with relative prostaglandin configuration termed phytoglandins (PhytoG) have never been detected in Nature, likely because of the lack of synthetic reference material. Here, the first asymmetric total synthesis of such compounds, namely of PhytoGF1α (9-epi-16-F1t -PhytoP) and its diastereomer ent-16-epi-PhytoGF1α (ent-9,16-diepi-16-F1t -PhytoP), has been accomplished. The synthetic strategy is based on radical anion oxidative cyclization, copper(I)-mediated alkyl-alkyl coupling and enantioselective reduction reactions. A UHPLC-MS/MS study using the synthesized compounds as standards indicates PhytoG formation at significant levels during autoxidation of α-linolenic acid in edible vegetable oils. Initial testing of synthetic PhytoGs together with F1 -PhytoP and 15-F2t -IsoP derivatives for potential interactions with the PGF2α (FP) receptor did not reveal significant activity. The notion that PUFA-derived oxidatively formed cyclic metabolites with prostaglandin configuration do not form to a significant extent in biological or food matrices has to be corrected. Strong evidence is provided that oxidatively formed PhytoG metabolites may be ingested with plant-derived food, which necessitates further investigation of their biological profile.
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Affiliation(s)
- Jakub Smrček
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Miroslav Hájek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Ondřej Hodek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Karel Čížek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Emanuela Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Jean-Marie Galano
- Institut des Biomolécules Max Mousseron IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 Av. Charles Flahault, CS14491, 34093, Montpellier Cedex 05, France
| | - Camille Oger
- Institut des Biomolécules Max Mousseron IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 Av. Charles Flahault, CS14491, 34093, Montpellier Cedex 05, France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 Av. Charles Flahault, CS14491, 34093, Montpellier Cedex 05, France
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
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Smrček J, Hájek M, Hodek O, Čížek K, Pohl R, Jahn E, Galano J, Oger C, Durand T, Cvačka J, Jahn U. Cover Feature: First Total Synthesis of Phytoprostanes with Prostaglandin‐Like Configuration, Evidence for Their Formation in Edible Vegetable Oils and Orienting Study of Their Biological Activity (Chem. Eur. J. 37/2021). Chemistry 2021. [DOI: 10.1002/chem.202101937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jakub Smrček
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Miroslav Hájek
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Ondřej Hodek
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Karel Čížek
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Emanuela Jahn
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Jean‐Marie Galano
- Institut des Biomolécules Max Mousseron IBMM CNRS ENSCM Faculté de Pharmacie Université de Montpellier 15 Av. Charles Flahault CS14491, 34093 Montpellier Cedex 05 France
| | - Camille Oger
- Institut des Biomolécules Max Mousseron IBMM CNRS ENSCM Faculté de Pharmacie Université de Montpellier 15 Av. Charles Flahault CS14491, 34093 Montpellier Cedex 05 France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron IBMM CNRS ENSCM Faculté de Pharmacie Université de Montpellier 15 Av. Charles Flahault CS14491, 34093 Montpellier Cedex 05 France
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
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Klychnikov MK, Pohl R, Císařová I, Jahn U. α,γ-Dioxygenated amides via tandem Brook rearrangement/radical oxygenation reactions and their application to syntheses of γ-lactams. Beilstein J Org Chem 2021; 17:688-704. [PMID: 33777244 PMCID: PMC7961876 DOI: 10.3762/bjoc.17.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/23/2021] [Indexed: 11/23/2022] Open
Abstract
Pyrrolidones are common heterocyclic fragments in various biologically active compounds. Here, a two-step radical-based approach to γ-lactams bearing three to four stereocenters starting from epoxides, N-allylic silylacetamides and TEMPO is reported. The sequence starts with a new tandem nucleophilic substitution/Brook rearrangement/single electron transfer-induced radical oxygenation furnishing orthogonally protected α,γ-dioxygenated N-allylamides with wide scope, mostly good yields, and partly good diastereo- and enantioselectivity for defined combinations of chiral epoxides and chiral amides. This represents a very rare example of an oxidative geminal C-C/C-O difunctionalization next to carbonyl groups. The resulting dioxygenated allylic amides are subsequently subjected to persistent radical effect-based 5-exo-trig radical cyclization reactions providing functionalized pyrrolidones in high yields as diastereomeric mixtures. They converge to 3,4-trans-γ-lactams by base-mediated equilibration, which can be easily further diversified. Stereochemical models for both reaction types were developed.
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Affiliation(s)
- Mikhail K Klychnikov
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
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Sinito C, Corfdir P, Pfüller C, Gao G, Bartolomé J, Kölling S, Doblado AR, Jahn U, Lähnemann J, Auzelle T, Zettler JK, Flissikowski T, Koenraad P, Grahn HT, Geelhaar L, Fernández-Garrido S, Brandt O. Correction to Absence of Quantum-Confined Stark Effect in GaN Quantum Disks Embedded in (Al,Ga)N Nanowires Grown by Molecular Beam Epitaxy. Nano Lett 2020; 20:6930. [PMID: 32794760 DOI: 10.1021/acs.nanolett.0c02938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Pavlíčková T, Bultel-Poncé V, Guy A, Rocher A, Reversat G, Vigor C, Durand T, Galano JM, Jahn U, Oger C. First Total Syntheses of Novel Non-Enzymatic Polyunsaturated Fatty Acid Metabolites and Their Identification in Edible Oils. Chemistry 2020; 26:10090-10098. [PMID: 32531118 DOI: 10.1002/chem.202002138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/08/2020] [Indexed: 12/29/2022]
Abstract
Oxidative stress (OS) is an in vivo process leading to free radical overproduction, which triggers polyunsaturated fatty acid (PUFA) peroxidation resulting in the formation of racemic non-enzymatic oxygenated metabolites. As potential biomarkers of OS, their in vivo quantification is of great interest. However, since a large number of isomeric metabolites is formed in parallel, their quantification remains difficult without primary standards. Three new PUFA-metabolites, namely 18-F3t -isoprostane (IsoP) from eicosapentaenoic acid (EPA), 20-F4t -neuroprostane (NeuroP) from docosahexaenoic acid (DHA) and 20-F3t -NeuroP from docosapentaenoic acid (DPAn-3 ) were synthesized by two complementary synthetic strategies. The first one relied on a racemic approach to 18(RS)-18-F3t -IsoP using an oxidative radical anion cyclization as a key step, whereas the second used an enzymatic deracemization of a bicyclo[3.3.0]octene intermediate obtained from cyclooctadiene to pursue an asymmetric synthesis. The synthesized metabolites were applied in targeted lipidomics to prove lipid peroxidation in edible oils of commercial nutraceuticals.
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Affiliation(s)
- Tereza Pavlíčková
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France.,Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 12843, Prague 2, Czech Republic
| | - Valérie Bultel-Poncé
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Alexandre Guy
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Amandine Rocher
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Guillaume Reversat
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Claire Vigor
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Jean-Marie Galano
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Camille Oger
- Institut des Biomolécules Max Mousseron, IBMM, CNRS, ENSCM, Faculté de Pharmacie, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 05, France
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Tykvart J, Navrátil V, Kugler M, Šácha P, Schimer J, Hlaváčková A, Tenora L, Zemanová J, Dejmek M, Král V, Potáček M, Majer P, Jahn U, Brynda J, Řezáčová P, Konvalinka J. Identification of Novel Carbonic Anhydrase IX Inhibitors Using High-Throughput Screening of Pooled Compound Libraries by DNA-Linked Inhibitor Antibody Assay (DIANA). SLAS Discov 2020; 25:1026-1037. [PMID: 32452709 DOI: 10.1177/2472555220918836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The DNA-linked inhibitor antibody assay (DIANA) has been recently validated for ultrasensitive enzyme detection and for quantitative evaluation of enzyme inhibitor potency. Here we present its adaptation for high-throughput screening of human carbonic anhydrase IX (CAIX), a promising drug and diagnostic target. We tested DIANA's performance by screening a unique compound collection of 2816 compounds consisting of lead-like small molecules synthesized at the Institute of Organic Chemistry and Biochemistry (IOCB) Prague ("IOCB library"). Additionally, to test the robustness of the assay and its potential for upscaling, we screened a pooled version of the IOCB library. The results from the pooled screening were in agreement with the initial nonpooled screen with no lost hits and no false positives, which shows DIANA's potential to screen more than 100,000 compounds per day.All DIANA screens showed a high signal-to-noise ratio with a Z' factor of >0.89. The DIANA screen identified 13 compounds with Ki values equal to or better than 10 µM. All retested hits were active also in an orthogonal enzymatic assay showing zero false positives. However, further biophysical validation of identified hits revealed that the inhibition activity of several hits was caused by a single highly potent CAIX inhibitor, being present as a minor impurity. This finding eventually led us to the identification of three novel CAIX inhibitors from the screen. We confirmed the validity of these compounds by elucidating their mode of binding into the CAIX active site by x-ray crystallography.
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Affiliation(s)
- Jan Tykvart
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,DIANA Biotechnologies, Prague, Czech Republic
| | - Václav Navrátil
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,DIANA Biotechnologies, Prague, Czech Republic
| | - Michael Kugler
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Pavel Šácha
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiří Schimer
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,DIANA Biotechnologies, Prague, Czech Republic
| | - Anna Hlaváčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Lukáš Tenora
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,Department of Chemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jitka Zemanová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,DIANA Biotechnologies, Prague, Czech Republic
| | - Milan Dejmek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Vlastimil Král
- Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Milan Potáček
- Department of Chemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Pavel Majer
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiří Brynda
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic.,Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Konvalinka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic
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14
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Šimek M, Bártová K, Pohl R, Císařová I, Jahn U. Tandemreaktionen aus anionischer Oxy‐Cope‐Umlagerung und Oxygenierung als vielseitiger Zugang zu verschiedenartigen Gerüsten. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michal Šimek
- Institut für Organische Chemie und BiochemieTschechische Akademie der Wissenschaften Flemingovo náměstí 2 16610 Prag 6 Czech republic
| | - Kateřina Bártová
- Institut für Organische Chemie und BiochemieTschechische Akademie der Wissenschaften Flemingovo náměstí 2 16610 Prag 6 Czech republic
| | - Radek Pohl
- Institut für Organische Chemie und BiochemieTschechische Akademie der Wissenschaften Flemingovo náměstí 2 16610 Prag 6 Czech republic
| | - Ivana Císařová
- Institut für Anorganische ChemieNaturwissenschaftliche FakultätKarls-Universität Prag Hlavova 2030/8 12843 Prag 2 Czech republic
| | - Ullrich Jahn
- Institut für Organische Chemie und BiochemieTschechische Akademie der Wissenschaften Flemingovo náměstí 2 16610 Prag 6 Czech republic
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15
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Šimek M, Bártová K, Pohl R, Císařová I, Jahn U. Tandem Anionic oxy-Cope Rearrangement/Oxygenation Reactions as a Versatile Method for Approaching Diverse Scaffolds. Angew Chem Int Ed Engl 2020; 59:6160-6165. [PMID: 31994304 DOI: 10.1002/anie.201916188] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Indexed: 12/29/2022]
Abstract
Tandem anionic oxy-Cope rearrangement/radical oxygenation reactions provide δ,ϵ-unsaturated α-(aminoxy) carbonyl compounds, which serve as convenient precursors to diverse compound classes. Functionalized carbocycles are accessible by very rare all-carbon 5-endo-trig cyclizations, but also common 5-exo-trig radical cyclizations, based on the persistent radical effect. The tandem reactions can be further extended by highly diastereoselective allylation or reduction steps to give complex scaffolds.
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Affiliation(s)
- Michal Šimek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Kateřina Bártová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843, Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
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16
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Klychnikov MK, Pohl R, Císařová I, Jahn U. Application of the Brook Rearrangement in Tandem with Single Electron Transfer Oxidative and Radical Processes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mikhail K. Klychnikov
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Hlavova 2030/8 12843 Prague 2 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
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17
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Sinito C, Corfdir P, Pfüller C, Gao G, Bartolomé J, Kölling S, Rodil Doblado A, Jahn U, Lähnemann J, Auzelle T, Zettler JK, Flissikowski T, Koenraad P, Grahn HT, Geelhaar L, Fernández-Garrido S, Brandt O. Absence of Quantum-Confined Stark Effect in GaN Quantum Disks Embedded in (Al,Ga)N Nanowires Grown by Molecular Beam Epitaxy. Nano Lett 2019; 19:5938-5948. [PMID: 31385709 DOI: 10.1021/acs.nanolett.9b01521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Several of the key issues of planar (Al,Ga)N-based deep-ultraviolet light-emitting diodes could potentially be overcome by utilizing nanowire heterostructures, exhibiting high structural perfection, and improved light extraction. Here, we study the spontaneous emission of GaN/(Al,Ga)N nanowire ensembles grown on Si(111) by plasma-assisted molecular beam epitaxy. The nanowires contain single GaN quantum disks embedded in long (Al,Ga)N nanowire segments essential for efficient light extraction. These quantum disks are found to exhibit intense light emission at unexpectedly high energies, namely, significantly above the GaN bandgap, and almost independent of the disk thickness. An in-depth investigation of the actual structure and composition of the nanowires reveals a spontaneously formed Al gradient both along and across the nanowire, resulting in a complex core/shell structure with an Al-deficient core and an Al-rich shell with continuously varying Al content along the entire length of the (Al,Ga)N segment. This compositional change along the nanowire growth axis induces a polarization doping of the shell that results in a degenerate electron gas in the disk, thus screening the built-in electric fields. The high carrier density not only results in the unexpectedly high transition energies but also in radiative lifetimes depending only weakly on temperature, leading to a comparatively high internal quantum efficiency of the GaN quantum disks up to room temperature.
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Affiliation(s)
- C Sinito
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - P Corfdir
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - C Pfüller
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - G Gao
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - J Bartolomé
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - S Kölling
- Department of Applied Physics , TU Eindhoven , Den Dolech 2 , 5612 Eindhoven , AZ , The Netherlands
| | - A Rodil Doblado
- Department of Applied Physics , TU Eindhoven , Den Dolech 2 , 5612 Eindhoven , AZ , The Netherlands
| | - U Jahn
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - J Lähnemann
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - T Auzelle
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - J K Zettler
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - T Flissikowski
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - P Koenraad
- Department of Applied Physics , TU Eindhoven , Den Dolech 2 , 5612 Eindhoven , AZ , The Netherlands
| | - H T Grahn
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - L Geelhaar
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - S Fernández-Garrido
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - O Brandt
- Paul Drude Institut für Festkörperelektronik , Leibniz Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
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18
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Hernández‐Guerra D, Hlavačková A, Pramthaisong C, Vespoli I, Pohl R, Slanina T, Jahn U. Photochemical C−H Amination of Ethers and Geminal Difunctionalization Reactions in One Pot. Angew Chem Int Ed Engl 2019; 58:12440-12445. [DOI: 10.1002/anie.201905209] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/18/2019] [Indexed: 01/19/2023]
Affiliation(s)
- Daniel Hernández‐Guerra
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Anna Hlavačková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Chiranan Pramthaisong
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Ilaria Vespoli
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
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19
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Hernández‐Guerra D, Hlavačková A, Pramthaisong C, Vespoli I, Pohl R, Slanina T, Jahn U. Photochemical C−H Amination of Ethers and Geminal Difunctionalization Reactions in One Pot. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905209] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Daniel Hernández‐Guerra
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Anna Hlavačková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Chiranan Pramthaisong
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Ilaria Vespoli
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo námĕstí 2 16610 Prague 6 Czech Republic
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20
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Tupec M, Buček A, Janoušek V, Vogel H, Prchalová D, Kindl J, Pavlíčková T, Wenzelová P, Jahn U, Valterová I, Pichová I. Expansion of the fatty acyl reductase gene family shaped pheromone communication in Hymenoptera. eLife 2019; 8:e39231. [PMID: 30714899 PMCID: PMC6361591 DOI: 10.7554/elife.39231] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 01/10/2019] [Indexed: 12/20/2022] Open
Abstract
Fatty acyl reductases (FARs) are involved in the biosynthesis of fatty alcohols that serve a range of biological roles. Insects typically harbor numerous FAR gene family members. While some FARs are involved in pheromone biosynthesis, the biological significance of the large number of FARs in insect genomes remains unclear. Using bumble bee (Bombini) FAR expression analysis and functional characterization, hymenopteran FAR gene tree reconstruction, and inspection of transposable elements (TEs) in the genomic environment of FARs, we uncovered a massive expansion of the FAR gene family in Hymenoptera, presumably facilitated by TEs. The expansion occurred in the common ancestor of bumble bees and stingless bees (Meliponini). We found that bumble bee FARs from the expanded FAR-A ortholog group contribute to the species-specific pheromone composition. Our results indicate that expansion and functional diversification of the FAR gene family played a key role in the evolution of pheromone communication in Hymenoptera.
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Affiliation(s)
- Michal Tupec
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
- Department of Biochemistry, Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Aleš Buček
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
- Okinawa Institute of Science and Technology Graduate UniversityOkinawaJapan
| | - Václav Janoušek
- Department of Zoology, Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Heiko Vogel
- Department of EntomologyMax Planck Institute for Chemical EcologyJenaGermany
| | - Darina Prchalová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
| | - Jiří Kindl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
| | - Tereza Pavlíčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
| | - Petra Wenzelová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
| | - Irena Valterová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
| | - Iva Pichová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of SciencesPragueCzech Republic
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21
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Takagaki Y, Ramsteiner M, Jahn U, Jenichen B. Constituent substitution in hot wall deposition of Bi2S3 films by reaction with substrates. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.11.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Dokli I, Pohl R, Klepetářová B, Jahn U. First total synthesis of ent-asperparaline C and assignment of the absolute configuration of asperparaline C. Chem Commun (Camb) 2019; 55:3931-3934. [DOI: 10.1039/c9cc00945k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The first asymmetric total synthesis of a member of the asperparaline family was accomplished and the unknown absolute configuration of asperparaline C has been determined to be all-(S).
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Affiliation(s)
- Irena Dokli
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Blanka Klepetářová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
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23
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Just D, Hernandez-Guerra D, Kritsch S, Pohl R, Císařová I, Jones PG, Mackman R, Bahador G, Jahn U. Lithium Chloride Catalyzed Asymmetric Domino Aza-Michael Addition/[3 + 2] Cycloaddition Reactions for the Synthesis of Spiro- and Bicyclic α,β,γ-Triamino Acid Derivatives. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- David Just
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Daniel Hernandez-Guerra
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Susanne Kritsch
- Fachbereich Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Peter G. Jones
- Fachbereich Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Richard Mackman
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Gina Bahador
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Flemingovo nám. 2 166 10 Prague 6 Czech Republic
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24
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Hidasová D, Janák M, Jahn E, Císařová I, Jones PG, Jahn U. Diastereoselective Radical Couplings Enable the Asymmetric Synthesis of anti
-β-Amino-α-hydroxy Carboxylic Acid Derivatives. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801139] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denisa Hidasová
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
| | - Martin Janák
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
| | - Emanuela Jahn
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Peter G. Jones
- Fachbereich Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nam. 2 166 10 Prague 6 Czech Republic
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25
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Mahamulkar SG, Císařová I, Jahn U. New Phosphine Ligand Architectures Lead to Efficient Gold Catalysts for Cycloisomerization Reactions at Very Low Loading. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800938] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shraddha G. Mahamulkar
- Institute of Organic Chemistry and Biochemistry of theCzech Academy of Sciences Flemingovo nám. 2 16610 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic ChemistryCharles University Prague Hlavova 8 12843 Prague 2 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of theCzech Academy of Sciences Flemingovo nám. 2 16610 Prague 6 Czech Republic
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26
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Amatov T, Jangra H, Pohl R, Cisařová I, Zipse H, Jahn U. Unique Stereoselective Homolytic C-O Bond Activation in Diketopiperazine-Derived Alkoxyamines by Adjacent Amide Pyramidalization. Chemistry 2018; 24:15336-15345. [PMID: 30092124 DOI: 10.1002/chem.201803284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/02/2018] [Indexed: 12/12/2022]
Abstract
Simple monocyclic diketopiperazine (DKP)-derived alkoxyamines exhibit unprecedented activation of a remote C-O bond for homolysis by amide distortion. The combination of strain-release-driven amide planarization and the persistent radical effect (PRE) enables a unique, irreversible, and quantitative trans→cis isomerization under much milder conditions than typically observed for such homolysis-limited reactions. This isomerization is shown to be general and independent of the steric and electronic nature of both the amino acid side chains and the substituents at the DKP nitrogen atoms. Homolysis rate constants are determined, and they significantly differ for both the labile trans diastereomers and the stable cis diastereomers. To reveal the factors influencing this unusual process, structural features of the kinetic trans diastereomers and thermodynamic cis diastereomers are investigated in the solid state and in solution. X-ray crystallographic analysis and computational studies indicate substantial distortion of the amide bond from planarity in the trans-alkoxyamines, and this is believed to be the cause for the facile and quantitative isomerization. Thus, these amino-acid-derived alkoxyamines are the first examples that exhibit a large thermodynamic preference for one diastereomer over the other upon thermal homolysis, and this allows controlled switching of configurations and configurational cycling.
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Affiliation(s)
- Tynchtyk Amatov
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610, Prague, Czech Republic.,Ludwig Maximilian University, Department of Chemistry, Butenandstrasse 5-13, 81377, München, Germany
| | - Harish Jangra
- Ludwig Maximilian University, Department of Chemistry, Butenandstrasse 5-13, 81377, München, Germany
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610, Prague, Czech Republic
| | - Ivana Cisařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843, Prague, Czech Republic
| | - Hendrik Zipse
- Ludwig Maximilian University, Department of Chemistry, Butenandstrasse 5-13, 81377, München, Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610, Prague, Czech Republic
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Kapras V, Vyklicky V, Budesinsky M, Cisarova I, Vyklicky L, Chodounska H, Jahn U. Total Synthesis of ent-Pregnanolone Sulfate and Its Biological Investigation at the NMDA Receptor. Org Lett 2018; 20:946-949. [DOI: 10.1021/acs.orglett.7b03838] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Vojtech Kapras
- Institute
of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 166 10, Prague 6, Czech Republic
| | - Vojtech Vyklicky
- Institute
of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic
| | - Milos Budesinsky
- Institute
of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 166 10, Prague 6, Czech Republic
| | - Ivana Cisarova
- Department
of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Ladislav Vyklicky
- Institute
of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic
| | - Hana Chodounska
- Institute
of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 166 10, Prague 6, Czech Republic
| | - Ullrich Jahn
- Institute
of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 166 10, Prague 6, Czech Republic
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Jagtap PR, Císařová I, Jahn U. Bioinspired total synthesis of tetrahydrofuran lignans by tandem nucleophilic addition/redox isomerization/oxidative coupling and cycloetherification reactions as key steps. Org Biomol Chem 2018; 16:750-755. [DOI: 10.1039/c7ob02848b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three steps suffice to complete a bioinspired total synthesis of tetrahydrofuran lignans using tandem addition/isomerization/dimerization and cycloetherification reactions.
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Affiliation(s)
- Pratap R. Jagtap
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- 166 10 Prague
- Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry
- Charles University in Prague
- 12843 Prague 2
- Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- 166 10 Prague
- Czech Republic
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29
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Smrček J, Pohl R, Jahn U. Total syntheses of all tri-oxygenated 16-phytoprostane classes via a common precursor constructed by oxidative cyclization and alkyl-alkyl coupling reactions as the key steps. Org Biomol Chem 2017; 15:9408-9414. [PMID: 29095476 DOI: 10.1039/c7ob02505j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unified strategy for the total synthesis of the methyl esters of all phytoprostane (PhytoP) classes bearing two ring-oxygen atoms based on an orthogonally protected common precursor is described. Racemic 16-F1t-, 16-E1-PhytoP and their C-16 epimers, which also occur as racemates in Nature, were successfully obtained. The first total synthesis of very sensitive 16-D1t-PhytoP succeeded, however, it quickly isomerized to more stable, but so far also unknown Δ13-16-D1t-PhytoP, which may serve as a more reliable biomarker for D-type PhytoP. The dioxygenated cyclopentane ring carrying the ω-chain with the oxygen functionality in the 16-position was approached by a radical oxidative cyclization mediated by ferrocenium hexafluorophosphate and TEMPO. The α-chain was introduced by a new copper-catalyzed alkyl-alkyl coupling of a 6-heptenyl Grignard reagent with a functionalized cyclopentylmethyl triflate.
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Affiliation(s)
- Jakub Smrček
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic.
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Hidasová D, Jahn U. Intermolecular Formation of Two C-C Bonds across Olefins Enabled by Boron-Based Relay Strategies. Angew Chem Int Ed Engl 2017; 56:9656-9658. [PMID: 28664647 DOI: 10.1002/anie.201705046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Indexed: 12/17/2022]
Abstract
Smooth handoff in the relay: Vinyl boronates enable the direct addition of nucleophilic and electrophilic or nucleophilic and radical-generating carbon reagents across the double bond with retention of the valuable boronate group. The key to the success of this difficult twofold C-C bond-formation strategy is the initial relay of the nucleophilic addition to boron and the rearrangement of a 1,2-metalate rearrangement, shuttling it to the carbon atom.
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Affiliation(s)
- Denisa Hidasová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
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Affiliation(s)
- Denisa Hidasová
- Institut für Organische Chemie und BiochemieTschechische Akademie der Wissenschaften Flemingovo náměstí 2 16610 Prag 6 Tschechische Republik
| | - Ullrich Jahn
- Institut für Organische Chemie und BiochemieTschechische Akademie der Wissenschaften Flemingovo náměstí 2 16610 Prag 6 Tschechische Republik
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Amatov T, Pohl R, Cisařová I, Jahn U. Sequential Oxidative and Reductive Radical Cyclization Approach toward Asperparaline C and Synthesis of Its 8-Oxo Analogue. Org Lett 2017; 19:1152-1155. [PMID: 28207265 DOI: 10.1021/acs.orglett.7b00187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The most advanced approach, so far, to the asperparalines is developed. Consecutive oxidative and reductive radical cyclizations serve as the key steps to stereoselectively access the complex fully elaborated skeleton containing the cyclopentane and spiro-succinimide units.
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Affiliation(s)
- Tynchtyk Amatov
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
| | - Ivana Cisařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague , Hlavova 8, 12843 Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
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Amatov T, Gebauer M, Pohl R, Cisařová I, Jahn U. Oxidative radical cyclizations of diketopiperazines bearing an amidomalonate unit. Heterointermediate reaction sequences toward the asperparalines and stephacidins. Free Radic Res 2016; 50:S6-S17. [PMID: 27806645 DOI: 10.1080/10715762.2016.1223295] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel approach to the diazabicyclo[2.2.2]octane core of prenylated bridged diketopiperazine alkaloids is described by direct oxidative cyclizations of functionalized diketopiperazines mediated by ferrocenium hexafluorophosphate or the Mn(OAc)3•2H2O/Cu(OTf)2 system. Divergent reaction pathways take place depending on the substitution pattern of the substrates and the oxidation conditions such as temperature or the presence or absence of persistent radical TEMPO. For ester-substituted diketopiperazines, the ester group exerts a significant influence on the reaction outcome and stereochemistry of the radical cyclizations.
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Affiliation(s)
- Tynchtyk Amatov
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Martin Gebauer
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Radek Pohl
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Ivana Cisařová
- b Department of Inorganic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , Prague 2, Czech Republic
| | - Ullrich Jahn
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
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Ferreri C, Golding BT, Jahn U, Ravanat JL. COST Action CM1201 "Biomimetic Radical Chemistry": free radical chemistry successfully meets many disciplines. Free Radic Res 2016; 50:S112-S128. [PMID: 27750460 DOI: 10.1080/10715762.2016.1248961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The COST Action CM1201 "Biomimetic Radical Chemistry" has been active since December 2012 for 4 years, developing research topics organized into four working groups: WG1 - Radical Enzymes, WG2 - Models of DNA damage and consequences, WG3 - Membrane stress, signalling and defenses, and WG4 - Bio-inspired synthetic strategies. International collaborations have been established among the participating 80 research groups with brilliant interdisciplinary achievements. Free radical research with a biomimetic approach has been realized in the COST Action and are summarized in this overview by the four WG leaders.
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Affiliation(s)
- Carla Ferreri
- a ISOF, Consiglio Nazionale delle Ricerche, BioFreeRadicals Group , Bologna , Italy
| | - Bernard T Golding
- b School of Chemistry, Bedson Building, Newcastle University , Newcastle-upon-Tyne , UK
| | - Ullrich Jahn
- c Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Prague , Czech Republic
| | - Jean-Luc Ravanat
- d INAC-SCIB & CEA, INAC-SyMMES Laboratoire des Lésions des Acides Nucléiques , Université Grenoble Alpes , Grenoble , France
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Kafka F, Pohl R, Císařová I, Mackman R, Bahador G, Jahn U. N,2,3,4-Tetrasubstituted Pyrrolidines through Tandem Lithium Amide Conjugate Addition/Radical Cyclization/Oxygenation Reactions. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600621] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- František Kafka
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo namesti 2 16610 Prague Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo namesti 2 16610 Prague Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Albertov 6 12843 Prague Czech Republic
| | - Richard Mackman
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Gina Bahador
- Gilead Sciences, Inc.; 333 Lakeside Drive 94404 Foster City CA USA
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo namesti 2 16610 Prague Czech Republic
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Řehová L, Dračínský M, Jahn U. A general approach to iridoids by applying a new Julia olefination and a tandem anion-radical-carbocation crossover reaction. Org Biomol Chem 2016; 14:9612-9621. [DOI: 10.1039/c6ob01599a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient asymmetric approach to dihydronepetalactone and dolicholactone is presented featuring a Julia olefination and an anion–radical–cation crossover reaction.
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Affiliation(s)
- Lucie Řehová
- Institute of Organic Chemistry and Biochemistry
- Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry
- Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry
- Czech Academy of Sciences
- 16610 Prague 6
- Czech Republic
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Zhang JP, Zhao JJ, Su XJ, Jahn U, Ji Y, Sun MS, Qiu YX, Liu XH, Huang J, Zhang JC, Xu K. B23-O-11Identification of Σ-Twinning in HVPE-AIN Single Crystals. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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38
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Jahn E, Smrček J, Pohl R, Císařová I, Jones PG, Jahn U. Facile and Highly Diastereoselective Synthesis ofsyn- andcis-1,2-Diol Derivatives from Protected α-Hydroxy Ketones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501174] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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39
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Buček A, Matoušková P, Vogel H, Šebesta P, Jahn U, Weißflog J, Svatoš A, Pichová I. Evolution of moth sex pheromone composition by a single amino acid substitution in a fatty acid desaturase. Proc Natl Acad Sci U S A 2015; 112:12586-91. [PMID: 26417103 PMCID: PMC4611599 DOI: 10.1073/pnas.1514566112] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
For sexual communication, moths primarily use blends of fatty acid derivatives containing one or more double bonds in various positions and configurations, called sex pheromones (SPs). To study the molecular basis of novel SP component (SPC) acquisition, we used the tobacco hornworm (Manduca sexta), which uses a blend of mono-, di-, and uncommon triunsaturated fatty acid (3UFA) derivatives as SP. We identified pheromone-biosynthetic fatty acid desaturases (FADs) MsexD3, MsexD5, and MsexD6 abundantly expressed in the M. sexta female pheromone gland. Their functional characterization and in vivo application of FAD substrates indicated that MsexD3 and MsexD5 biosynthesize 3UFAs via E/Z14 desaturation from diunsaturated fatty acids produced by previously characterized Z11-desaturase/conjugase MsexD2. Site-directed mutagenesis of sequentially highly similar MsexD3 and MsexD2 demonstrated that swapping of a single amino acid in the fatty acyl substrate binding tunnel introduces E/Z14-desaturase specificity to mutated MsexD2. Reconstruction of FAD gene phylogeny indicates that MsexD3 was recruited for biosynthesis of 3UFA SPCs in M. sexta lineage via gene duplication and neofunctionalization, whereas MsexD5 representing an alternative 3UFA-producing FAD has been acquired via activation of a presumably inactive ancestral MsexD5. Our results demonstrate that a change as small as a single amino acid substitution in a FAD enzyme might result in the acquisition of new SP compounds.
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Affiliation(s)
- Aleš Buček
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic
| | - Petra Matoušková
- Faculty of Pharmacy, Charles University in Prague, 500 05 Hradec Králové, Czech Republic
| | - Heiko Vogel
- Max Planck Institute for Chemical Ecology, Department of Entomology, D-07745, Jena, Germany
| | - Petr Šebesta
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic
| | - Jerrit Weißflog
- Max Planck Institute for Chemical Ecology, Mass Spectrometry Group, D-07745, Jena, Germany
| | - Aleš Svatoš
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic; Max Planck Institute for Chemical Ecology, Mass Spectrometry Group, D-07745, Jena, Germany
| | - Iva Pichová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic;
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Amatov T, Pohl R, Císařová I, Jahn U. Synthesis of Bridged Diketopiperazines by Using the Persistent Radical Effect and a Formal Synthesis of Bicyclomycin. Angew Chem Int Ed Engl 2015; 54:12153-7. [DOI: 10.1002/anie.201504883] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 01/29/2023]
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Amatov T, Pohl R, Císařová I, Jahn U. Synthese überbrückter Diketopiperazine mit Hilfe des persistenten Radikaleffekts und eine formale Synthese von Bicyclomycin. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504883] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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42
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Holan M, Pohl R, Císařová I, Klepetářová B, Jones PG, Jahn U. Highly Functionalized Cyclopentane Derivatives by Tandem Michael Addition/Radical Cyclization/Oxygenation Reactions. Chemistry 2015; 21:9877-88. [PMID: 26012714 DOI: 10.1002/chem.201500424] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Indexed: 01/26/2023]
Abstract
Densely functionalized cyclopentane derivatives with up to four consecutive stereocenters are assembled by a tandem Michael addition/single-electron transfer oxidation/radical cyclization/oxygenation strategy mediated by ferrocenium hexafluorophosphate, a recyclable, less toxic single-electron transfer oxidant. Ester enolates were coupled with α-benzylidene and α-alkylidene β-dicarbonyl compounds with switchable diastereoselectivity. This pivotal steering element subsequently controls the diastereoselectivity of the radical cyclization step. The substitution pattern of the radical cyclization acceptor enables a switch of the cyclization mode from a 5-exo pattern for terminally substituted olefin units to a 6-endo mode for internally substituted acceptors. The oxidative anionic/radical strategy also allows efficient termination by oxygenation with the free radical 2,2,6,6-tetramethyl-1-piperidinoxyl, and two C-C bonds and one C-O bond are thus formed in the sequence. A stereochemical model is proposed that accounts for all of the experimental results and allows the prediction of the stereochemical outcome. Further transformations of the synthesized cyclopentanes are reported.
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Affiliation(s)
- Martin Holan
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic)
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic)
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague (Czech Republic)
| | - Blanka Klepetářová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic)
| | - Peter G Jones
- Institut für Anorganische und Allgemeine Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic).
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Mahamulkar SG, Císařová I, Jahn U. The Lithiation Reactivity and Selectivity of Differentially Branched Alkyldiphenylphosphine Oxides - A Simple and Versatile Approach toortho-Functionalized Arylphosphine Oxides. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400861] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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44
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Holan M, Pohl R, Císařová I, Jahn U. Polyfunctional β-Dicarbonyl Compounds by Michael Addition Reactions of Ester Enolates to α-Benzylidene and α-Alkylidene-β-dicarbonyl Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Jahn E, Jahn U. Oxidative photoredoxkatalytische Aktivierung aliphatischer Nucleophile für C(sp3)-C(sp2)-Kreuzkupplungsreaktionen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408748] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Jahn E, Jahn U. Oxidative Photoredox-Catalytic Activation of Aliphatic Nucleophiles for C(sp3)-C(sp2) Cross-Coupling Reactions. Angew Chem Int Ed Engl 2014; 53:13326-8. [DOI: 10.1002/anie.201408748] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Indexed: 11/12/2022]
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Jahn E, Durand T, Galano JM, Jahn U. ChemInform Abstract: Recent Approaches to the Total Synthesis of Phytoprostanes, Isoprostanes and Neuroprostanes as Important Products of Lipid Oxidative Stress and Biomarkers of Disease. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/chin.201433243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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48
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Kafka F, Holan M, Hidasová D, Pohl R, Císařová I, Klepetářová B, Jahn U. Oxidative Katalyse mit dem stöchiometrischen Oxidans als Reagens: eine effiziente Strategie für Einelektronentransfer-induzierte Anion-Radikal-Tandemreaktionen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403776] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Kafka F, Holan M, Hidasová D, Pohl R, Císařová I, Klepetářová B, Jahn U. Oxidative Catalysis Using the Stoichiometric Oxidant as a Reagent: An Efficient Strategy for Single-Electron-Transfer-Induced Tandem Anion-Radical Reactions. Angew Chem Int Ed Engl 2014; 53:9944-8. [DOI: 10.1002/anie.201403776] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/11/2014] [Indexed: 01/25/2023]
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Trujillo C, Sánchez-Sanz G, Karpavičienė I, Jahn U, Čikotienė I, Rulíšek L. Divergent Pathways and Competitive Mechanisms of Metathesis Reactions between 3-Arylprop-2-ynyl Esters and Aldehydes: An Experimental and Theoretical Study. Chemistry 2014; 20:10360-70. [DOI: 10.1002/chem.201402551] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 11/05/2022]
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