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Rossino G, Marrubini G, Brindisi M, Granje M, Linciano P, Rossi D, Collina S. A green Heck reaction protocol towards trisubstituted alkenes, versatile pharmaceutical intermediates. Front Chem 2024; 12:1431382. [PMID: 39050371 PMCID: PMC11266092 DOI: 10.3389/fchem.2024.1431382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 06/11/2024] [Indexed: 07/27/2024] Open
Abstract
The Heck reaction is widely employed to build a variety of biologically relevant scaffolds and has been successfully implemented in the production of active pharmaceutical ingredients (APIs). Typically, the reaction with terminal alkenes gives high yields and stereoselectivity toward the trans-substituted alkenes product, and many green variants of the original protocol have been developed for such substrates. However, these methodologies may not be applied with the same efficiency to reactions with challenging substrates, such as internal olefins, providing trisubstituted alkenes. In the present work, we have implemented a Heck reaction protocol under green conditions to access trisubstituted alkenes as final products or key intermediates of pharmaceutical interest. A set of preliminary experiments performed on a model reaction led to selecting a simple and green setup based on a design of experiments (DoE) study. In such a way, the best experimental conditions (catalyst loading, equivalents of alkene, base and tetraalkylammonium salt, composition, and amount of solvent) have been identified. Then, a second set of experiments were performed, bringing the reaction to completion and considering additional factors. The protocol thus defined involves using EtOH as the solvent, microwave (mw) irradiation to achieve short reaction times, and the supported catalyst Pd EnCat®40, which affords an easier recovery and reuse. These conditions were tested on different aryl bromides and internal olefines to evaluate the substrate scope. Furthermore, with the aim to limit as much as possible the production of waste, a simple isomerization procedure was developed to convert the isomeric byproducts into the desired conjugated E alkene, which is also the thermodynamically favoured product. The approach herein disclosed represents a green, efficient, and easy-to-use handle towards different trisubstituted alkenes via the Heck reaction.
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Affiliation(s)
- Giacomo Rossino
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | | | | | - Marc Granje
- Department of Drug Sciences, University of Pavia, Pavia, Italy
- Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
| | | | - Daniela Rossi
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Simona Collina
- Department of Drug Sciences, University of Pavia, Pavia, Italy
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2
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Guan J, Chen J, Luo Y, Guo L, Zhang W. Copper-Catalyzed Chemoselective Asymmetric Hydrogenation of C=O Bonds of Exocyclic α,β-Unsaturated Pentanones. Angew Chem Int Ed Engl 2023; 62:e202306380. [PMID: 37307027 DOI: 10.1002/anie.202306380] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/11/2023] [Accepted: 06/12/2023] [Indexed: 06/13/2023]
Abstract
A highly chemoselective earth-abundant transition metal copper catalyzed asymmetric hydrogenation of C=O bonds of exocyclic α,β-unsaturated pentanones was realized using H2 . The desired products were obtained with up to 99 % yield and 96 % ee (enantiomeric excess) (99 % ee, after recrystallization). The corresponding chiral exocyclic allylic pentanol products can be converted into several bioactive molecules. The hydrogenation mechanism was investigated via deuterium-labelling experiments and control experiments, which indicate that the keto-enol isomerization rate of the substrate is faster than that of the hydrogenation and also show that the Cu-H complex can only catalyze chemoselectively the asymmetric reduction of the carbonyl group. Computational results indicate that the multiple attractive dispersion interactions (MADI effect) between the catalyst with bulky substituents and substrate play important roles which stabilize the transition states and reduce the generation of by-products.
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Affiliation(s)
- Jing Guan
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Jianzhong Chen
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Yicong Luo
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Lisen Guo
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Wanbin Zhang
- Frontier Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai, 200240, P. R. China
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Zimmerman T, Ibrahim SA. Quercetin Is a Novel Inhibitor of the Choline Kinase of Streptococcus pneumoniae. Antibiotics (Basel) 2022; 11:antibiotics11091272. [PMID: 36140052 PMCID: PMC9495829 DOI: 10.3390/antibiotics11091272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/09/2022] [Accepted: 09/14/2022] [Indexed: 12/05/2022] Open
Abstract
The effectiveness of current antimicrobial methods for addressing for food-borne Gram-positive pathogens has dropped with the emergence of resistant strains. Consequently, new methods for addressing Gram-positive strains have to be developed continuously. This includes establishing novel targets for antimicrobial discovery efforts. Eukaryotic choline kinases have been highly developed as drug targets for the treatment of cancer, rheumatoid arthritis, malaria and many other conditions and diseases. Recently, choline kinase (ChoK) has been proposed as a drug target for Gram-positive species generally. The aim of this work was to discover novel, natural sources of inhibitors for bacterial ChoK from tea extracts. We report the first natural bacterial ChoK inhibitor with antimicrobial activity against Streptococcus pneumoniae: quercetin.
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Michalke J, Faust K, Bögl T, Bartling S, Rockstroh N, Topf C. Mild and Efficient Heterogeneous Hydrogenation of Nitroarenes Facilitated by a Pyrolytically Activated Dinuclear Ni(II)-Ce(III) Diimine Complex. Int J Mol Sci 2022; 23:ijms23158742. [PMID: 35955876 PMCID: PMC9369285 DOI: 10.3390/ijms23158742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 07/29/2022] [Accepted: 08/03/2022] [Indexed: 12/04/2022] Open
Abstract
We communicate the assembly of a solid, Ce-promoted Ni-based composite that was applied as catalyst for the hydrogenation of nitroarenes to afford the corresponding organic amines. The catalytically active material described herein was obtained through pyrolysis of a SiO2-pellet-supported bimetallic Ni-Ce complex that was readily synthesized prior to use from a MeO-functionalized salen congener, Ni(OAc)2·4 H2O, and Ce(NO3)3·6 H2O. Rewardingly, the requisite ligand for the pertinent solution phase precursor was accessible upon straightforward and time-saving imine condensation of ortho-vanillin with 1,3-diamino-2,2′-dimethylpropane. The introduced catalytic protocol is operationally simple in that the whole reaction set-up is quickly put together on the bench without the need of cumbersome handling in a glovebox or related containment systems. Moreover, the advantageous geometry and compact-sized nature of the used pellets renders the catalyst separation and recycling exceptionally easy.
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Affiliation(s)
- Jessica Michalke
- Institute of Catalysis (INCA), Johannes Kepler University (JKU), Altenbergerstraße 69, 4040 Linz, Austria
- Institute of Inorganic Chemistry, Johannes Kepler University (JKU), Altenbergerstraße 69, 4040 Linz, Austria
| | - Kirill Faust
- Institute of Catalysis (INCA), Johannes Kepler University (JKU), Altenbergerstraße 69, 4040 Linz, Austria
| | - Thomas Bögl
- Department of Analytical Chemistry, Johannes Kepler University (JKU), Altenbergerstraße 69, 4040 Linz, Austria
| | - Stephan Bartling
- Leibniz Institute for Catalysis, University of Rostock (LIKAT Rostock), Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Nils Rockstroh
- Leibniz Institute for Catalysis, University of Rostock (LIKAT Rostock), Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Christoph Topf
- Institute of Catalysis (INCA), Johannes Kepler University (JKU), Altenbergerstraße 69, 4040 Linz, Austria
- Correspondence:
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Zimmermann BM, Ngoc TT, Tzaras DI, Kaicharla T, Teichert JF. A Bifunctional Copper Catalyst Enables Ester Reduction with H 2: Expanding the Reactivity Space of Nucleophilic Copper Hydrides. J Am Chem Soc 2021; 143:16865-16873. [PMID: 34605649 DOI: 10.1021/jacs.1c09626] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Employing a bifunctional catalyst based on a copper(I)/NHC complex and a guanidine organocatalyst, catalytic ester reductions to alcohols with H2 as terminal reducing agent are facilitated. The approach taken here enables the simultaneous activation of esters through hydrogen bonding and formation of nucleophilic copper(I) hydrides from H2, resulting in a catalytic hydride transfer to esters. The reduction step is further facilitated by a proton shuttle mediated by the guanidinium subunit. This bifunctional approach to ester reductions for the first time shifts the reactivity of generally considered "soft" copper(I) hydrides to previously unreactive "hard" ester electrophiles and paves the way for a replacement of stoichiometric reducing agents by a catalyst and H2.
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Affiliation(s)
- Birte M Zimmermann
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Trung Tran Ngoc
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany.,Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Dimitrios-Ioannis Tzaras
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany.,Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Trinadh Kaicharla
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Johannes F Teichert
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany.,Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
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Matsumoto S, Marumoto H, Akazome M, Otani Y, Kaiho T. Chemoselective Reduction of α, β-Unsaturated Carbonyl and Carboxylic Compounds by Hydrogen Iodide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shoji Matsumoto
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
- Soft Molecular Activation Research Center (SMARC), Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Hayato Marumoto
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Motohiro Akazome
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Yasuhiko Otani
- GODO SHIGEN CO., LTD., 1365 Nanaido, Chosei-mura, Chosei-gun, Chiba 299-4333, Japan
| | - Tatsuo Kaiho
- GODO SHIGEN CO., LTD., 1365 Nanaido, Chosei-mura, Chosei-gun, Chiba 299-4333, Japan
- Chiba Iodine Resource Innovation Center (CIRIC), Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Wen J, Wang F, Zhang X. Asymmetric hydrogenation catalyzed by first-row transition metal complexes. Chem Soc Rev 2021; 50:3211-3237. [DOI: 10.1039/d0cs00082e] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review focuses on asymmetric direct and transfer hydrogenation with first-row transition metal complexes. The reaction mechanisms and the models of enantiomeric induction were summarized and emphasized.
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Affiliation(s)
- Jialin Wen
- Department of Chemistry
- Guangdong Provincial Key Laboratory of Catalysis
- Southern University of Science and Technology
- Shenzhen
- China
| | - Fangyuan Wang
- Department of Chemistry
- Guangdong Provincial Key Laboratory of Catalysis
- Southern University of Science and Technology
- Shenzhen
- China
| | - Xumu Zhang
- Department of Chemistry
- Guangdong Provincial Key Laboratory of Catalysis
- Southern University of Science and Technology
- Shenzhen
- China
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Corre Y, Rysak V, Nagyházi M, Kalocsai D, Trivelli X, Djukic J, Agbossou‐Niedercorn F, Michon C. One‐Pot Controlled Reduction of Conjugated Amides by Sequential Double Hydrosilylation Catalyzed by an Iridium(III) Metallacycle. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yann Corre
- UCCS UMR 8181 Univ. Lille CNRS, Centrale Lille, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Vincent Rysak
- UCCS UMR 8181 Univ. Lille CNRS, Centrale Lille, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Márton Nagyházi
- UCCS UMR 8181 Univ. Lille CNRS, Centrale Lille, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Dorottya Kalocsai
- UCCS UMR 8181 Univ. Lille CNRS, Centrale Lille, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Xavier Trivelli
- IMEC Institut Michel‐Eugène Chevreul FR 2638 Univ. Lille 59000 Lille France
| | - Jean‐Pierre Djukic
- Institut de Chimie de Strasbourg, CNRS UMR 7177 Université de Strasbourg 67000 Strasbourg France
| | - Francine Agbossou‐Niedercorn
- UCCS UMR 8181 Univ. Lille CNRS, Centrale Lille, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide 59000 Lille France
| | - Christophe Michon
- UCCS UMR 8181 Univ. Lille CNRS, Centrale Lille, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide 59000 Lille France
- Ecole Européenne de Chimie, Polymères et Matériaux ‐ LIMA UMR 7042, Université de Strasbourg Université de Haute‐Alsace, Ecole Européenne de Chimie, Polymères et Matériaux, CNRS, LIMA, UMR 7042 25 rue Becquerel 67087 Strasbourg France
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Identification and validation of novel and more effective choline kinase inhibitors against Streptococcus pneumoniae. Sci Rep 2020; 10:15418. [PMID: 32963303 PMCID: PMC7508948 DOI: 10.1038/s41598-020-72165-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/24/2020] [Indexed: 11/08/2022] Open
Abstract
Streptococcus pneumoniae choline kinase (sChoK) has previously been proposed as a drug target, yet the effectiveness of the first and only known inhibitor of sChoK, HC-3, is in the millimolar range. The aim of this study was thus to further validate sChoK as a potential therapeutic target by discovering more powerful sChoK inhibitors. LDH/PK and colorimetric enzymatic assays revealed two promising sChoK inhibitor leads RSM-932A and MN58b that were discovered with IC50 of 0.5 and 150 μM, respectively, and were shown to be 2–4 magnitudes more potent than the previously discovered inhibitor HC-3. Culture assays showed that the minimum inhibitory concentration (MIC) of RSM-932A and MN58b for S. pneumoniae was 0.4 μM and 10 μM, respectively, and the minimum lethal concentration (MLC) was 1.6 μM and 20 μM, respectively. Western blot monitoring of teichoic acid production revealed differential patterns in response to each inhibitor. In addition, both inhibitors possessed a bacteriostatic mechanism of action, and neither interfered with the autolytic effects of vancomycin. Cells treated with MN58b but not RSM-932A were more sensitive to a phosphate induced autolysis with respect to the untreated cells. SEM studies revealed that MN58b distorted the cell wall, a result consistent with the apparent teichoic acid changes. Two novel and more highly potent putative inhibitors of sChoK, MN58b and RSM-932A, were characterized in this study. However, the effects of sChoK inhibitors can vary at the cellular level. sChoK inhibition is a promising avenue to follow in the development of therapeutics for treatment of S. pneumoniae.
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Reed JH, Cramer N. 1,3,2‐Diazaphospholenes Catalyze the Conjugate Reduction of Substituted Acrylic Acids. ChemCatChem 2020. [DOI: 10.1002/cctc.202000662] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- John H. Reed
- Laboratory of Asymmetric Catalysis and Synthesis EPFL SB ISIC LCSA, BCH 4305 1015 Lausanne (Switzerland)
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis EPFL SB ISIC LCSA, BCH 4305 1015 Lausanne (Switzerland)
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Motakatla VKR, Gokanapalli A, Peddiahgari VGR. Cu–N‐heterocyclic carbene‐catalysed synthesis of 2‐aryl‐3‐(arylethynyl)quinoxalines from one‐pot tandem coupling of
o
‐phenylenediamines and terminal alkynes. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Anusha Gokanapalli
- Department of ChemistryYogi Vemana University Kadapa 516005 Andhra Pradesh India
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