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Wang L, Zhang J, Li C, Dang W, Guo W, Xie J, Zhou F, Zhang Q. Access to 2,4-Disubstituted Pyrrole-Based Polymer with Long-Wavelength and Stimuli-Responsive Properties via Copper-Catalyzed [3+2] Polycycloaddition. Macromol Rapid Commun 2024; 45:e2300652. [PMID: 38407457 DOI: 10.1002/marc.202300652] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/22/2024] [Indexed: 02/27/2024]
Abstract
Pyrrole-based polymers (PBPs), a type of fascinating functional polymers, play a crucial role in materials science. However, efficient synthetic strategies of PBPs with diverse structures are mainly focused on conjugated polypyrroles and still remain challenging. Herein, an atom and step economy protocol is described to access various 2,4-disubstituted PBPs by in situ formation of pyrrole core structure via copper-catalyzed [3+2] polycycloaddition of dialkynones and diisocyanoacetates. A series of PBPs is prepared with high molecular weight (Mw up to 18 200 Da) and moderate to good yield (up to 87%), which possesses a fluorescent emission located in the green to yellow light region. Blending the PBPs with polyvinyl alcohol, the stretchable composite films exhibit a significant strengthening of the mechanical properties (tensile stress up to 59 MPa, elongation at break >400%) and an unprecedented stress-responsive luminescence enhancement that over fourfold fluorescent emission intensity is maintained upon stretching up to 100%. On the basis of computational studies, the unique photophysical and mechanical properties are attributed to the substitution of carbonyl chromophores on the pyrrole unit.
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Affiliation(s)
- Lingna Wang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jianbo Zhang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Chunmei Li
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Wanbin Dang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Wei Guo
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Junjian Xie
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Fengtao Zhou
- School of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Qiuyu Zhang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
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2
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Vitali Forconesi G, Basso A, Banfi L, Gugliotta D, Lambruschini C, Nola M, Riva R, Rocca V, Moni L. Total Synthesis of 4- epi-Bengamide E. Molecules 2024; 29:1715. [PMID: 38675534 PMCID: PMC11052282 DOI: 10.3390/molecules29081715] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Bengamide E is a bioactive natural product that was isolated from Jaspidae sponges by Crews and co-workers in 1989. It displays a wide range of biological activities, including antitumor, antibiotic, and anthelmintic properties. With the aim of investigating the structural feature essential for their activity, several total syntheses of Bengamide E and its analogues have been reported in the literature. Nevertheless, no synthesis of the stereoisomer with modification of its configuration at C-4 carbon has been reported so far. Here, we report the first total synthesis of the 4-epi-Bengamide E. Key reactions in the synthesis include a chemoenzimatic desymmetrization of biobased starting materials and a diastereoselective Passerini reaction using a chiral, enantiomerically pure aldehyde, and a lysine-derived novel isocyanide.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Lisa Moni
- Department of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso, 31, 16146 Genova, Italy; (G.V.F.); (A.B.); (L.B.); (D.G.); (C.L.); (M.N.); (R.R.); (V.R.)
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3
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Wamser R, Zhang X, Kuropka B, Arkona C, Rademann J. Protein-Templated Ugi Reactions versus In-Situ Ligation Screening: Two Roads to the Identification of SARS-CoV-2 Main Protease Inhibitors. Chemistry 2024; 30:e202303940. [PMID: 38246870 DOI: 10.1002/chem.202303940] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
Protein-templated fragment ligation was established as a method for the rapid identification of high affinity ligands, and multicomponent reactions (MCR) such as the Ugi four-component reaction (Ugi 4CR) have been efficient in the synthesis of drug candidates. Thus, the combination of both strategies should provide a powerful approach to drug discovery. Here, we investigate protein-templated Ugi 4CR quantitatively using a fluorescence-based enzyme assay, HPLC-QTOF mass spectrometry (MS), and native protein MS with SARS-CoV-2 main protease as template. Ugi reactions were analyzed in aqueous buffer at varying pH and fragment concentration. Potent inhibitors of the protease were formed in presence of the protein via Ugi 4CR together with Ugi three-component reaction (Ugi 3CR) products. Binding of inhibitors to the protease was confirmed by native MS and resulted in the dimerization of the protein target. Formation of Ugi products was, however, more efficient in the non-templated reaction, apparently due to interactions of the protein with the isocyanide and imine fragments. Consequently, in-situ ligation screening of Ugi 4CR products was identified as a superior approach to the discovery of SARS-CoV-2 protease inhibitors.
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Affiliation(s)
- Rebekka Wamser
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
| | - Xinting Zhang
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
| | - Benno Kuropka
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Christoph Arkona
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
| | - Jörg Rademann
- Department of Biology, Chemistry and Pharmacy, Institute of Pharmacy, Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Str.2+4, 14195, Berlin, Germany
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4
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Zhu WF, Empel C, Pelliccia S, Koenigs RM, Proschak E, Hernandez-Olmos V. Photochemistry in Medicinal Chemistry and Chemical Biology. J Med Chem 2024. [PMID: 38457829 DOI: 10.1021/acs.jmedchem.3c02109] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
Photochemistry has emerged as a transformative force in organic chemistry, significantly expanding the chemical space accessible for medicinal chemistry. Light-induced reactions enable the efficient synthesis of intricate organic structures and have found applications throughout the different stages of the drug discovery and development processes. Moreover, photochemical techniques provide innovative solutions in chemical biology, allowing precise spatiotemporal drug activation and targeted delivery. In this Perspective, we highlight the already numerous remarkable applications and the even more promising future of photochemistry in medicinal chemistry and chemical biology.
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Affiliation(s)
- W Felix Zhu
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany
| | - Claire Empel
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Sveva Pelliccia
- Department of Pharmacy (DoE 2023-2027), University of Naples Federico II, via D. Montesano 49, 80131 Naples, Italy
| | - Rene M Koenigs
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Ewgenij Proschak
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
| | - Victor Hernandez-Olmos
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
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5
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Yu N, Lv JF, He SM, He KC, Zheng WH, Zhou YQ, Jiang K, Pan XC, Wei Y. Modular Assembly of 2-Aminoaniline Derivatives by Merging Hydroxylamine-Passerini and Hetero-Cope Rearrangement. Org Lett 2024; 26:1358-1363. [PMID: 38345019 DOI: 10.1021/acs.orglett.3c04270] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
A metal-free three-component protocol that combines a hydroxylamine-Passerini reaction and hetero-Cope rearrangement was realized, which enables the modular assembly of a wide range of structurally new and interesting 2-aminoanilines bearing an α-hydroxyamide substructure.
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Affiliation(s)
- Ning Yu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Jing-Fang Lv
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Shi-Mei He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Kui-Cheng He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Wei-Hao Zheng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yu-Qiang Zhou
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Kun Jiang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Xi-Chun Pan
- College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Ye Wei
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
- College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang, 641112, China
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6
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Chen JJ, Guo Y, Wang R, Yang HZ, Yu XQ, Zhang J. Cationic lipids from multi-component Passerini reaction for non-viral gene delivery: A structure-activity relationship study. Bioorg Med Chem 2024; 100:117635. [PMID: 38340641 DOI: 10.1016/j.bmc.2024.117635] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
Although many types of cationic lipids have been developed as efficient gene vectors, the construction of lipid molecules with simple procedures remains challenging. Passerini reaction, as a classic multicomponent reaction, could directly give the α-acyloxycarboxamide products with biodegradable ester and amide bonds. Herein, two series of novel cationic lipids with heterocyclic pyrrolidine and piperidine as headgroups were synthesized through Passerini reaction (P-series) and amide condensation (A-series), and relevant structure-activity relationships on their gene delivery capability was studied. It was found that although both of the two series of lipids could form lipid nanoparticles (LNPs) which could effectively condense DNA, the LNP derived from P-series lipids showed higher transfection efficiency, serum tolerance, cellular uptake, and lower cytotoxicity. Unlike the A-series LNPs, the P-series LNPs showed quite different structure-activity relationship, in which the relative site of the secondary amine had significant effect on the transfection performance. The othro-isomers of the P-series lipids had lower cytotoxicity, but poor transfection efficiency, which was probably due to their unstable nature. Taken together, this study not only validated the feasibility of Passerini reaction for the construction of cationic lipids for gene delivery, but also afforded some clues for the rational design of effective non-viral lipidic gene vectors.
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Affiliation(s)
- Jia-Jia Chen
- College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Yu Guo
- College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Rong Wang
- College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Hui-Zhen Yang
- College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Xiao-Qi Yu
- College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Ji Zhang
- College of Chemistry, Sichuan University, Chengdu 610064, PR China.
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7
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Elmamouni E, Guillard M, Haddou B, Grimaud L, El Kaïm L. Tsuji-Trost Based Cascades: From Passerini Adducts of Cinnamaldehyde to Allylated Oxazolones. J Org Chem 2024; 89:2009-2013. [PMID: 38215399 DOI: 10.1021/acs.joc.3c02169] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
The Passerini coupling of cinnamaldehyde derivatives affords allylic esters that may behave as both electrophiles and nucleophiles in Tsuji-Trost reactions. We present herein the interaction of the latter with methylallylcarbonate, leading to the formation of oxazolidine-diones. The efficiency of the process relies on the building up of a CO2 overpressure in the medium. A reaction mechanism highlighting the reversibility of the Tsuji-Trost reaction is proposed for the process.
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Affiliation(s)
- Elhachemia Elmamouni
- Laboratoire de Synthèse Organique (LSO -UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128 Palaiseau Cedex, France
- Département de Chimie, Université des Sciences et de la Technologie d'Oran Mohamed-Boudiaf USTOMB, El Mnaouar, BP 1505, Bir El Djir 31000, Oran, Algérie
| | - Marianne Guillard
- Laboratoire de Synthèse Organique (LSO -UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128 Palaiseau Cedex, France
| | - Baptiste Haddou
- Laboratoire des Biomolécules LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Laurence Grimaud
- Laboratoire des Biomolécules LBM, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique (LSO -UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128 Palaiseau Cedex, France
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8
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Martinho LA, Rosalba TPF, Sousa GG, Gatto CC, Politi JRS, Andrade CKZ. Cyrene: a very reactive bio-based chiral ketone in diastereoselective Passerini reactions. Mol Divers 2024; 28:111-123. [PMID: 36787083 DOI: 10.1007/s11030-023-10618-6] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 01/31/2023] [Indexed: 02/15/2023]
Abstract
Cyrene, a green bioderived solvent from waste cellulose, was applied to the synthesis of novel α-acyloxyamide derivatives through a Passerini-3CR with carboxylic acids and isocyanides with good yields and diastereoselectivities under mild conditions. Cyrene showed exceptionally high reactivity and the degree of diastereoselection was dependent mostly on the isocyanide. DFT calculations as well as the experimental findings indicated that both kinetic and thermodynamic effects might explain the results.
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Affiliation(s)
- Luan A Martinho
- Instituto de Química, Laboratório de Química Metodológica e Orgânica Sintética (LaQMOS), Universidade de Brasília, Brasília, DF, Brazil
| | - Thaissa P F Rosalba
- Instituto de Química, Laboratório de Química Metodológica e Orgânica Sintética (LaQMOS), Universidade de Brasília, Brasília, DF, Brazil
| | - Gustavo G Sousa
- Instituto de Química, Laboratório de Química Computacional (LQC), Universidade de Brasília, Brasília, DF, Brazil
| | - Claudia C Gatto
- Instituto de Química, Laboratório de Síntese Inorgânica e Cristalografia (LASIC), Universidade de Brasília, Brasília, DF, Brazil
| | - José Roberto S Politi
- Instituto de Química, Laboratório de Química Computacional (LQC), Universidade de Brasília, Brasília, DF, Brazil
| | - Carlos Kleber Z Andrade
- Instituto de Química, Laboratório de Química Metodológica e Orgânica Sintética (LaQMOS), Universidade de Brasília, Brasília, DF, Brazil.
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9
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Banfi L, Lambruschini C. 100 years of isocyanide-based multicomponent reactions. Mol Divers 2024; 28:1-2. [PMID: 38206427 DOI: 10.1007/s11030-023-10783-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Affiliation(s)
- Luca Banfi
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146, Genova, Italy.
| | - Chiara Lambruschini
- Department of Chemistry and Industrial Chemistry, University of Genoa, via Dodecaneso 31, 16146, Genova, Italy
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10
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Fragkiadakis M, Zingiridis M, Loukopoulos E, Neochoritis CG. New oxacycles on the block: benzodioxepinones via a Passerini reaction. Mol Divers 2024; 28:29-35. [PMID: 35900638 DOI: 10.1007/s11030-022-10502-9] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 07/14/2022] [Indexed: 11/25/2022]
Abstract
Oxacycles and benzoxepanes are privileged motifs present in a variety of natural products and functional molecules. However, their synthetic access is limited. Here, we demonstrate a rapid synthesis of unprecedented benzoxepanes from readily available starting materials in one step via a Passerini multicomponent reaction. The reaction proceeds smoothly under mild reaction conditions. We have obtained a single-crystal X-ray structure, revealing a butterfly conformation, combined with useful structural features. In addition, we have performed both a full interaction map on the X-ray structure and a profile analysis of a virtual library based on the proposed scaffold with a special focus on certain physicochemical parameters to demonstrate their potential usage in drug discovery.
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Cai W, Huang Y. Metal Free Dötz-Type Aminobenzannulation Reaction via 1,1-Dipoles Cross-Coupling. Angew Chem Int Ed Engl 2023; 62:e202310133. [PMID: 37610557 DOI: 10.1002/anie.202310133] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/24/2023]
Abstract
Aryl amines are of constant interest in organic synthesis owing to their ubiquity in natural products, pharmaceuticals, and organic materials. However, C-H amination or pre-functionalization frequently results in uncontrollable site selectivity, over activation and the generation of inseparable mixtures of regio-isomers. Here we present a novel metal free Dötz-type aminobenzannulation reaction that circumvents the selectivity issues inherent in aromatic chemistry, as well as the use of stoichiometric unstable organolithium reagents and toxic chromium complexes. The concept of utilizing readily available isocyanides and Morita-Baylis-Hillman (MBH) carbonates to achieve 1,1-dipoles cross-coupling to construct ketenimine is the key to success, which has been experimentally and computationally verified. The tandem 6π-electrocyclization/aromatization process offers a versatile method for synthesizing functionalized anilines, fused aryl amines and fused heteroaryl amines.
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Affiliation(s)
- Wei Cai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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12
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Buskes M, Coffin A, Troast DM, Stein R, Blanco MJ. Accelerating Drug Discovery: Synthesis of Complex Chemotypes via Multicomponent Reactions. ACS Med Chem Lett 2023; 14:376-385. [PMID: 37077380 PMCID: PMC10107905 DOI: 10.1021/acsmedchemlett.3c00012] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/20/2023] [Indexed: 04/21/2023] Open
Abstract
The generation of multiple bonds in one reaction step has attracted massive interest in drug discovery and development. Multicomponent reactions (MCRs) offer the advantage of combining three or more reagents in a one-pot fashion to effectively yield a synthetic product. This approach significantly accelerates the synthesis of relevant compounds for biological testing. However, there is a perception that this methodology will only produce simple chemical scaffolds with limited use in medicinal chemistry. In this Microperspective, we want to highlight the value of MCRs toward the synthesis of complex molecules characterized by the presence of quaternary and chiral centers. This paper will cover specific examples showing the impact of this technology toward the discovery of clinical compounds and recent breakthroughs to expand the scope of the reactions toward topologically rich molecular chemotypes.
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Affiliation(s)
- Melissa
J. Buskes
- Atavistik Bio 75 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Aaron Coffin
- Atavistik Bio 75 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Dawn M. Troast
- Atavistik Bio 75 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Rachel Stein
- Atavistik Bio 75 Sidney Street, Cambridge, Massachusetts 02139, United States
| | - Maria-Jesus Blanco
- Atavistik Bio 75 Sidney Street, Cambridge, Massachusetts 02139, United States
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Russo C, Brunelli F, Cesare Tron G, Giustiniano M. Isocyanide-Based Multicomponent Reactions Promoted by Visible Light Photoredox Catalysis. Chemistry 2023; 29:e202203150. [PMID: 36458647 DOI: 10.1002/chem.202203150] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [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: 10/09/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022]
Abstract
Isocyanide-based multicomponent reactions claim a one century-old history of flourishing developments. On the other hand, the enormous impact of recent progresses in visible light photocatalysis has boosted the identification of new straightforward and green approaches to both new and known chemical entities. In this context, the application of visible light photocatalytic conditions to multicomponent processes has been promoting key stimulating advancements. Spanning from radical-polar crossover pathways, to photoinduced and self-catalyzed transformations, to reactions involving the generation of imidoyl radical species, the present literature analysis would provide a general and critical overview about the potentialities and challenges of exploiting isocyanides in visible light photocatalytic multicomponent reactions.
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Affiliation(s)
- Camilla Russo
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Francesca Brunelli
- Department of Drug Science, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Gian Cesare Tron
- Department of Drug Science, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Mariateresa Giustiniano
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
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14
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Marchi P, Wang W, Puig C, Martin A, Crovetto T, Labidi J, Riva R, Cavallo D, Moni L. Synthesis of symmetric bis-α-ketoamides from renewable starting materials and comparative study of their nucleating efficiency in PLLA. RSC Adv 2023; 13:4994-5001. [PMID: 36762081 PMCID: PMC9906979 DOI: 10.1039/d2ra07934h] [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: 12/12/2022] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
An efficient and smart synthesis of bis-α-ketoamides has been disclosed. The desired products have been obtained through a Passerini multicomponent reaction using biobased aldehydes, acetic acid and bis-isocyanides (prepared from the corresponding biobased diamides), followed by a deprotection/oxidation step. The effect of the synthesized compounds on the crystallization behavior of poly(l-lactide) (PLLA) has been investigated by differential scanning calorimetry (DSC) in non-isothermal conditions. Among all the synthesized compounds, only a few are able to meaningfully enhance the nucleation of PLLA, as confirmed by a shift of the polymer crystallization peak temperature towards higher values. With the research of active polymer nucleating agents being mostly empirical, the combinatorial synthetic approach proposed herein, coupled with the possibility of a small scale mixing procedure, can potentially represent a useful strategy for the discovery of new efficient biobased polymer additives.
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Affiliation(s)
- Pietro Marchi
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Wei Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Cristián Puig
- Departamento de Ciencias de los Materiales, Universidad Simón BolívarApartado 89000Caracas1080AVenezuela
| | - Ander Martin
- Chemical & Environmental Engineering Department, Faculty of Engineering, University of the Basque Country UPV/EHUGipuzkoa, Plaza Europa 1Donostia20018Spain
| | - Tullio Crovetto
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Jalel Labidi
- Chemical & Environmental Engineering Department, Faculty of Engineering, University of the Basque Country UPV/EHUGipuzkoa, Plaza Europa 1Donostia20018Spain
| | - Renata Riva
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Dario Cavallo
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
| | - Lisa Moni
- Department of Chemistry and Industrial Chemistry, University of Genoa Via Dodecaneso 31 Genova 16146 Italy
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15
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Bąchor U, Junka A, Brożyna M, Mączyński M. The In Vitro Impact of Isoxazole Derivatives on Pathogenic Biofilm and Cytotoxicity of Fibroblast Cell Line. Int J Mol Sci 2023; 24:2997. [PMID: 36769319 PMCID: PMC9917413 DOI: 10.3390/ijms24032997] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/24/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
The microbial, biofilm-based infections of chronic wounds are one of the major challenges of contemporary medicine. The use of topically administered antiseptic agents is essential to treat wound-infecting microorganisms. Due to observed microbial tolerance/resistance against specific clinically-used antiseptics, the search for new, efficient agents is of pivotal meaning. Therefore, in this work, 15 isoxazole derivatives were scrutinized against leading biofilm wound pathogens Staphylococcus aureus and Pseudomonas aeruginosa, and against Candida albicans fungus. For this purpose, the minimal inhibitory concentration, biofilm reduction in microtitrate plates, modified disk diffusion methods and antibiofilm dressing activity measurement methods were applied. Moreover, the cytotoxicity and cytocompatibility of derivatives was tested toward wound bed-forming cells, referred to as fibroblasts, using normative methods. Obtained results revealed that all isoxazole derivatives displayed antimicrobial activity and low cytotoxic effect, but antimicrobial activity of two derivatives, 2-(cyclohexylamino)-1-(5-nitrothiophen-2-yl)-2-oxoethyl 5-amino-3-methyl-1,2-oxazole-4-carboxylate (PUB9) and 2-(benzylamino)-1-(5-nitrothiophen-2-yl)-2-oxoethyl 5-amino-3-methyl-1,2-oxazole-4-carboxylate (PUB10), was noticeably higher compared to the other compounds analyzed, especially PUB9 with regard to Staphylococcus aureus, with a minimal inhibitory concentration more than x1000 lower compared to the remaining derivatives. The PUB9 and PUB10 derivatives were able to reduce more than 90% of biofilm-forming cells, regardless of the species, displaying at the same time none (PUB9) or moderate (PUB10) cytotoxicity against fibroblasts and high (PUB9) or moderate (PUB10) cytocompatibility against these wound cells. Therefore, taking into consideration the clinical demand for new antiseptic agents for non-healing wound treatment, PUB9 seems to be a promising candidate to be further tested in advanced animal models and later, if satisfactory results are obtained, in the clinical setting.
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Affiliation(s)
- Urszula Bąchor
- Department of Organic Chemistry and Drug Technology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Adam Junka
- Unique Application Model Laboratory, Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Malwina Brożyna
- Unique Application Model Laboratory, Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Marcin Mączyński
- Department of Organic Chemistry and Drug Technology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland
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16
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Gu Q, Cheng Z, Qiu X, Zeng X. Recent Advances in the Electrochemical Functionalization of Isocyanides. CHEM REC 2023; 23:e202200177. [PMID: 36126178 DOI: 10.1002/tcr.202200177] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 07/11/2022] [Revised: 08/30/2022] [Indexed: 01/21/2023]
Abstract
Isocyanides are well-known as efficient CO surrogates and C1 synthons in modern organic synthesis. Although tremendous efforts have been devoted to fully exploiting the reactivity of isocyanides, these transformations are primarily limited by their utilization of stoichiometric toxic chemical oxidants. With the recent resurgence of organic electrochemistry, which has considerably laid dormant over the past several decades, electrolysis has been identified as a green and powerful tool to enrich structural diversity by solely utilizing electric current as clean and inherently safe redox equivalents of stoichiometric chemical oxidants. In this regard, the unique reactivity of isocyanides has been studied in numerous electrochemical transformations. This review comprehensively highlights the most relevant progress in electrochemical strategies towards the functionalization of isocyanides up until June of 2022, with a focus on reaction outcomes and mechanisms.
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Affiliation(s)
- Qingyun Gu
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Zhenfeng Cheng
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Xiaodong Qiu
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Xiaobao Zeng
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
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17
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Neto BAD, Beck PS, Sorto JEP, Eberlin MN. In Melting Points We Trust: A Review on the Misguiding Characterization of Multicomponent Reactions Adducts and Intermediates. Molecules 2022; 27:7552. [DOI: 10.3390/molecules27217552] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
Abstract
We discuss herein the problems associated with using melting points to characterize multicomponent reactions’ (MCRs) products and intermediates. Although surprising, it is not rare to find articles in which these MCRs final adducts (or their intermediates) are characterized solely by comparing melting points with those available from other reports. A brief survey among specialized articles highlights serious and obvious problems with this practice since, for instance, cases are found in which as many as 25 quite contrasting melting points have been attributed to the very same MCR adduct. Indeed, it seems logical to assume that the inherent non-confirmatory nature of melting points could be vastly misleading as a protocol for structural confirmation, but still many publications (also in the Q1 and Q2 quartiles) insist on using it. This procedure contradicts best practices in organic synthesis, and articles fraught with limitations and misleading conclusions have been published in the MCRs field. The drawbacks inherent to this practice are indeed serious and have misguided MCRs advances. We therefore suggest some precautions aimed at avoiding future confusions.
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18
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Brunelli F, Ceresa C, Fracchia L, Tron GC, Aprile S. Expanding the Chemical Space of Drug-like Passerini Compounds: Can α-Acyloxy Carboxamides Be Considered Hard Drugs? ACS Med Chem Lett 2022; 13:1898-1904. [DOI: 10.1021/acsmedchemlett.2c00420] [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] [Received: 09/13/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Francesca Brunelli
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Chiara Ceresa
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Letizia Fracchia
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Gian Cesare Tron
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Silvio Aprile
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
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19
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Bhela I, Ranza A, Balestrero FC, Serafini M, Aprile S, Di Martino RMC, Condorelli F, Pirali T. A Versatile and Sustainable Multicomponent Platform for the Synthesis of Protein Degraders: Proof-of-Concept Application to BRD4-Degrading PROTACs. J Med Chem 2022; 65:15282-15299. [PMID: 36323630 PMCID: PMC9706574 DOI: 10.1021/acs.jmedchem.2c01218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Indexed: 11/06/2022]
Abstract
The use of small molecules to induce targeted protein degradation is increasingly growing in the drug discovery landscape, and protein degraders have progressed rapidly through the pipelines. Despite the advances made so far, their synthesis still represents a significant burden and new approaches are highly demanded. Herein we report an unprecedented platform that leverages the modular nature of both multicomponent reactions and degraders to enable the preparation of highly decorated PROTACs. As a proof of principle, our platform has been applied to the preparation of potential BRD4-degrading PROTACs, resulting in the discovery of a set of degraders endowed with high degradation efficiency. Compared to the existing methods, our approach offers a versatile and cost-effective means to access libraries of protein degraders and increase the chance of identifying successful candidates.
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Affiliation(s)
- Irene
Preet Bhela
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Alice Ranza
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Federica Carolina Balestrero
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | | | - Silvio Aprile
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Rita Maria Concetta Di Martino
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Fabrizio Condorelli
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Tracey Pirali
- Department of Pharmaceutical
Sciences, Università degli Studi
del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
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20
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Wang Z, Zhang Y, Wu Z, Zhao Y. DTBP
‐promoted Passerini‐type reaction of isocyanides with aldehydes: Synthesis of α‐acyloxycarboxamides. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200290] [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: 11/05/2022]
Affiliation(s)
- Zhuo Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
| | - Yan Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
| | - Zi‐Han Wu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
| | - Yu‐Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
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21
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Cores Á, Clerigué J, Orocio-rodríguez E, Menéndez JC. Multicomponent Reactions for the Synthesis of Active Pharmaceutical Ingredients. Pharmaceuticals (Basel) 2022; 15:1009. [PMID: 36015157 PMCID: PMC9416173 DOI: 10.3390/ph15081009] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
Multicomponent reactions 9i.e., those that engage three or more starting materials to form a product that contains significant fragments of all of them), have been widely employed in the construction of compound libraries, especially in the context of diversity-oriented synthesis. While relatively less exploited, their use in target-oriented synthesis offers significant advantages in terms of synthetic efficiency. This review provides a critical summary of the use of multicomponent reactions for the preparation of active pharmaceutical principles.
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22
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Hooshmand SE, Yazdani H, Hulme C. Six‐Component Reactions and Beyond: The Nuts and Bolts. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200569] [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)
| | - Hossein Yazdani
- Independent researcher Independent Researcher Tehran IRAN (ISLAMIC REPUBLIC OF)
| | - Christopher Hulme
- The University of Arizona Department of Chemistry and Biochemistry Tucson UNITED STATES
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23
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Abstract
This year represents the 100th anniversary of the discovery of the Passerini three-component reaction. The related Ugi four-compound reaction was discovered 37 years after the Passerini reaction. Undoubtedly, both reactions are very important multicomponent reactions but the Ugi reactions outperform the Passerini reactions in terms of combinatorial space according to the equation xy [x is the number of building blocks per component, and y is the order of the multicomponent reaction (for Passerini, y = 3; for Ugi, y = 4)]. In this work, a historical but contemporary perspective of the discoveries and innovations of the two reactions is given. From a bird's eye view and in a more general sense, the discovery of novel reactions is discussed and how it relates to inventions and innovations.
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Affiliation(s)
- Alexander Dömling
- Department of Drug Design, University of Groningen, Groningen 9700 AD, The Netherlands
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24
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Neto BAD, Eberlin MN, Sherwood J. Solvent Screening Is Not Solvent Effect: A Review on the Most Neglected Aspect of Multicomponent Reactions. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Brenno A D. Neto
- Laboratory of Medicinal and Technological Chemistry University of Brasília Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília Distrito Federal 70904-900 Brazil
| | - Marcos N. Eberlin
- School of Material Engineering and Nanotechnology MackMass Laboratory Mackenzie Presbyterian University São Paulo SP 01302-907 Brazil
| | - James Sherwood
- Green Chemistry Centre of Excellence Department of Chemistry University of York Heslington North Yorkshire YO10 5DD UK
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25
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Travanut A, Monteiro PF, Smith S, Howdle SM, Grabowska A, Kellam B, Meier MAR, Alexander C. Passerini chemistries for synthesis of polymer pro-drug and polymersome drug delivery nanoparticles. J Mater Chem B 2022; 10:3895-3905. [DOI: 10.1039/d2tb00045h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
New materials chemistries are urgently needed to overcome the limitations of existing biomedical materials in terms of preparation, functionality and versatility, and also in regards to their compatibility with biological...
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26
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Stivanin ML, Gallo RDC, Spadeo JPM, Cormanich RA, Jurberg ID. A Visible Light-Mediated Three-Component Strategy Based on the Ring-Opening of Cyclic Ethers with Aryldiazoacetates and Nucleophiles. Org Chem Front 2022. [DOI: 10.1039/d1qo01780b] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A blue light-promoted reaction between aryldiazoacetates and different nucleophiles has been developed in the presence of THF (and other cyclic ethers) as solvent, allowing the incorporation of these three elements...
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27
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Zheng S, Smit W, Spannenberg A, Tin S, de Vries JG. Synthesis of α-Keto Aldehydes via Selective Cu(I)-catalyzed Oxidation of α-Hydroxy Ketones. Chem Commun (Camb) 2022; 58:4639-4642. [DOI: 10.1039/d2cc00773h] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient approach to synthesize α-keto aldehydes was established through selective oxidation of α-hydroxy ketones catalyzed by Cu(I) using oxygen as oxidant. A wide array of α-keto aldehydes was prepared...
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28
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Concepción O, Peñaloza FJ, López JJ, Cabrera-Barjas G, Jiménez CA, Paixão MW, de la Torre AF. Ugi and Passerini reactions enable the incorporation of ΔAA into N-alkylated peptides and depsipeptides. NEW J CHEM 2022. [DOI: 10.1039/d2nj01545e] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Isocyanide-based multicomponent reactions enable the incorporation of different dehydroamino acids under mild conditions.
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Affiliation(s)
- Odette Concepción
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | - Francisco J. Peñaloza
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | - Jhon Jairo López
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | | | - Claudio A. Jiménez
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | - Márcio W. Paixão
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos – UFSCar, Rodovia Washington Luís, km 235-SP-310, São Carlos, São Paulo, Brazil, 13565-905
| | - Alexander F. de la Torre
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
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