1
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Tu JL, Huang B. Titanium in photocatalytic organic transformations: current applications and future developments. Org Biomol Chem 2024; 22:6650-6664. [PMID: 39118484 DOI: 10.1039/d4ob01152j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Titanium, as an important transition metal, has garnered extensive attention in both industry and academia due to its excellent mechanical properties, corrosion resistance, and unique reactivity in organic synthesis. In the field of organic photocatalysis, titanium-based compounds such as titanium dioxide (TiO2), titanocenes (Cp2TiCl2, CpTiCl3), titanium tetrachloride (TiCl4), tetrakis(isopropoxy)titanium (Ti(OiPr)4), and chiral titanium complexes have demonstrated distinct reactivity and selectivity. This review focuses on the roles of these titanium compounds in photocatalytic organic reactions, and highlights the reaction pathways such as photo-induced single-electron transfer (SET) and ligand-to-metal charge transfer (LMCT). By systematically surveying the latest advancements in titanium-involved organic photocatalysis, this review aims to provide references for further research and technological innovation within this fast-developing field.
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Affiliation(s)
- Jia-Lin Tu
- Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519085, China.
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Binbin Huang
- Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519085, China.
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2
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Li S, Zhu H, Li L, Chen W, Jiang J, Qu ZW, Grimme S, Zhang YQ. A Nuclearity-Dependent Enantiodivergent Epoxide Opening via Enthalpy-Controlled Mononuclear and Entropy-Controlled Dinuclear (Salen)Titanium Catalysis. Angew Chem Int Ed Engl 2023; 62:e202309525. [PMID: 37489882 DOI: 10.1002/anie.202309525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 07/26/2023]
Abstract
A nuclearity-dependent enantiodivergent epoxide opening reaction has been developed, in which both antipodes of chiral alcohol products are selectively accessed by mononuclear (salen)TiIII complex and its self-assembled oxygen-bridged dinuclear counterparts within the same stereogenic ligand scaffold. Kinetic studies based on the Eyring equation revealed an enthalpy-controlled enantio-differentiation mode in mononuclear catalysis, whereas an entropy-controlled one in dinuclear catalysis. DFT calculations outline the origin of the enantiocontrol of the mononuclear catalysis and indicate the actual catalyst species in the dinuclear catalytic system. The mechanistic insights may shed a light on a strategy for stereoswichable asymmetric catalysis utilizing nuclearity-distinct transition-metal complexes.
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Affiliation(s)
- Shengxiao Li
- Department of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Longfei Li
- Department of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Wanjiao Chen
- Department of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Jie Jiang
- Department of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Yong-Qiang Zhang
- Department of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
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3
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Dembitsky VM. Bioactive Steroids Bearing Oxirane Ring. Biomedicines 2023; 11:2237. [PMID: 37626733 PMCID: PMC10452232 DOI: 10.3390/biomedicines11082237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 07/24/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
This review explores the biological activity and structural diversity of steroids and related isoprenoid lipids, with a particular focus on compounds containing an oxirane ring. These natural compounds are derived from fungi, fungal endophytes, as well as extracts of plants, algae, and marine invertebrates. To evaluate their biological activity, an extensive examination of refereed literature sources was conducted, including in vivo and in vitro studies and the utilization of the QSAR method. Notable properties observed among these compounds include strong anti-inflammatory, antineoplastic, antiproliferative, anti-hypercholesterolemic, antiparkinsonian, diuretic, anti-eczematic, anti-psoriatic, and various other activities. Throughout this review, 3D graphs illustrating the activity of individual steroids are presented, accompanied by images of selected terrestrial or marine organisms. Furthermore, this review provides explanations for specific types of biological activity associated with these compounds. The data presented in this review are of scientific interest to the academic community and carry practical implications in the fields of pharmacology and medicine. By analyzing the biological activity and structural diversity of steroids and related isoprenoid lipids, this review offers valuable insights that contribute to both theoretical understanding and applied research. This review draws upon data from various authors to compile information on the biological activity of natural steroids containing an oxirane ring.
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Affiliation(s)
- Valery M Dembitsky
- Centre for Applied Research, Innovation and Entrepreneurship, Lethbridge College, 3000 College Drive South, Lethbridge, AB T1K 1L6, Canada
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4
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Cai M, Ma J, Wu Q, Lin A, Yao H. Enantioselective Syntheses of 2-Azabicyclo[2.2.1]heptanes via Brønsted Acid Catalyzed Ring-Opening of meso-Epoxides. Org Lett 2022; 24:8791-8795. [PMID: 36414324 DOI: 10.1021/acs.orglett.2c03529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A chiral phosphoric acid-catalyzed ring-opening of meso-epoxides was developed. A range of 2-azabicyclo[2.2.1]heptanes were obtained in high yields with excellent enantioselectivities. In addition, the hydroxyl and amide groups in the products provided handles for further derivatization.
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Affiliation(s)
- Min Cai
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jiao Ma
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Qimin Wu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
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5
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Dzedulionytė K, Veikšaitė M, Morávek V, Malinauskienė V, Račkauskienė G, Šačkus A, Žukauskaitė A, Arbačiauskienė E. Convenient Synthesis of N-Heterocycle-Fused Tetrahydro-1,4-diazepinones. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248666. [PMID: 36557800 PMCID: PMC9783606 DOI: 10.3390/molecules27248666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/02/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
A general approach towards the synthesis of tetrahydro-4H-pyrazolo[1,5-a][1,4]diazepin-4-one, tetrahydro[1,4]diazepino[1,2-a]indol-1-one and tetrahydro-1H-benzo[4,5]imidazo[1,2-a][1,4]diazepin-1-one derivatives was introduced. A regioselective strategy was developed for synthesizing ethyl 1-(oxiran-2-ylmethyl)-1H-pyrazole-5-carboxylates from easily accessible 3(5)-aryl- or methyl-1H-pyrazole-5(3)-carboxylates. Obtained intermediates were further treated with amines resulting in oxirane ring-opening and direct cyclisation-yielding target pyrazolo[1,5-a][1,4]diazepin-4-ones. A straightforward two-step synthetic approach was applied to expand the current study and successfully functionalize ethyl 1H-indole- and ethyl 1H-benzo[d]imidazole-2-carboxylates. The structures of fused heterocyclic compounds were confirmed by 1H, 13C, and 15N-NMR spectroscopy and HRMS investigation.
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Affiliation(s)
- Karolina Dzedulionytė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19A, LT-50254 Kaunas, Lithuania
| | - Melita Veikšaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19A, LT-50254 Kaunas, Lithuania
| | - Vít Morávek
- Department of Chemical Biology, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Vida Malinauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19A, LT-50254 Kaunas, Lithuania
| | - Greta Račkauskienė
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania
| | - Algirdas Šačkus
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19A, LT-50254 Kaunas, Lithuania
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania
| | - Asta Žukauskaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19A, LT-50254 Kaunas, Lithuania
- Department of Chemical Biology, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
- Correspondence: (A.Ž.); (E.A.)
| | - Eglė Arbačiauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19A, LT-50254 Kaunas, Lithuania
- Correspondence: (A.Ž.); (E.A.)
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6
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Sachdeva G, Vaya D, Srivastava CM, Kumar A, Rawat V, Singh M, Verma M, Rawat P, Rao GK. Calix[n]arenes and its derivatives as organocatalysts. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Tang W, Wang C. Bis-Boric Acid-Mediated Regioselective Reductive Aminolysis of 3,4-Epoxy Alcohols. J Org Chem 2022; 87:15653-15660. [PMID: 36398526 DOI: 10.1021/acs.joc.2c01878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Herein we report a bis-boric acid-mediated regioselective reductive aminolysis of 3,4-epoxy alcohols, providing new access to prepare amino diols in high diastereofidelity directly starting from nitroarenes. Notably, this step-economical process is enabled by the essential dual function of bis-boric acid, which is engaged initially in the 4,4'-bipyridine-catalyzed reduction of nitro compounds as the reductant and subsequently promotes the ring opening reaction of 3,4-epoxy alcohols with the in situ-generated anilines.
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Affiliation(s)
- Wei Tang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, P. R. China
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8
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Sigmund M, Xu G, Grandi E, Poelarends GJ. Enhancing the Peroxygenase Activity of a Cofactor-Independent Peroxyzyme by Directed Evolution Enabling Gram-Scale Epoxide Synthesis. Chemistry 2022; 28:e202201651. [PMID: 35861144 PMCID: PMC9804992 DOI: 10.1002/chem.202201651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Indexed: 01/09/2023]
Abstract
Peroxygenases selectively incorporate oxygen into organic molecules making use of the environmentally friendly oxidant H2 O2 with water being the sole by-product. These biocatalysts can provide 'green' routes for the synthesis of enantioenriched epoxides, which are fundamental intermediates in the production of pharmaceuticals. The peroxyzyme 4-oxalocrotonate tautomerase (4-OT), catalysing the epoxidation of a variety of α,β-unsaturated aldehydes with H2 O2 , is outstanding because of its independence from any cost-intensive cofactor. However, its low-level peroxygenase activity and the decrease in the enantiomeric excess of the corresponding α,β-epoxy-aldehydes under preparative-scale conditions is limiting the potential of 4-OT. Herein we report the directed evolution of a tandem-fused 4-OT variant, which showed an ∼150-fold enhanced peroxygenase activity compared to 4-OT wild type, enabling the synthesis of α,β-epoxy-aldehydes in milligram- and gram-scale with high enantiopurity (up to 98 % ee) and excellent conversions. This engineered cofactor-independent peroxyzyme can provide new opportunities for the eco-friendly and practical synthesis of enantioenriched epoxides at large scale.
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Affiliation(s)
- Marie‐Cathérine Sigmund
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Guangcai Xu
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Eleonora Grandi
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Gerrit J. Poelarends
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
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9
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Bis(oxiranes) Containing Cyclooctane Core: Synthesis and Reactivity towards NaN 3. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206889. [PMID: 36296482 PMCID: PMC9607513 DOI: 10.3390/molecules27206889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022]
Abstract
Reactions of oxirane ring opening provide a powerful tool for regio- and stereoselective synthesis of polyfunctional and heterocyclic compounds, widely used in organic chemistry and drug design. Cyclooctane, alongside other medium-sized rings, is of interest as a novel molecular platform for the construction of target-oriented leads. Additionally, cyclooctane derivatives are well known to be prone to transannular reactions, which makes them a promising object in the search for novel approaches to polycyclic structures. In the present work, a series of cyclooctanediones was studied in Corey-Chaykovsky reactions, and novel spirocyclic bis(oxiranes) containing cyclooctane core, namely, 1,5-dioxadispiro[2.0.2.6]dodecane and 1,8-dioxadispiro[2.3.2.3]dodecane, were synthesized. Ring opening of the obtained bis(oxiranes) upon treatment with sodium azide was investigated, and it was found that the reaction path is determined by the reciprocal orientation of oxygen atoms in the oxirane moieties. Diastereomers of the bis(oxiranes) with cis-orientation underwent independent ring opening, supplying corresponding diazidodiols, while in the case of stereoisomers with trans-orientation, domino-like reactions occurred, including intramolecular nucleophilic attack and the formation of a novel three- or six-membered O-containing ring. Summarily, a straightforward approach to polyfunctional compounds containing cyclooctane or oxabicyclo[3.3.1]nonane cores, employing bis(oxiranes), was elaborated.
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10
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Ren BH, Teng YQ, Wang SN, Wang S, Liu Y, Ren WM, Lu XB. Mechanistic Basis for the High Enantioselectivity and Activity in the Multichiral Bimetallic Complex-Mediated Enantioselective Copolymerization of meso-Epoxides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bai-Hao Ren
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Yong-Qiang Teng
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Si-Nuo Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Shang Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Ye Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Wei-Min Ren
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Xiao-Bing Lu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
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11
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Gündoğdu Ö, Atalay A, Çelebioğlu N, Anıl B, Şahin E, Şanlı-Mohamed G, Bozkaya U, Kara Y. Regio- and stereo-chemical ring-opening reactions of the 2,3-epoxy alcohol derivative with nucleophiles: Explanation of the structures and C-2 selectivity supported by theoretical computations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Flavin-enabled reductive and oxidative epoxide ring opening reactions. Nat Commun 2022; 13:4896. [PMID: 35986005 PMCID: PMC9391479 DOI: 10.1038/s41467-022-32641-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 08/08/2022] [Indexed: 12/23/2022] Open
Abstract
Epoxide ring opening reactions are common and important in both biological processes and synthetic applications and can be catalyzed in a non-redox manner by epoxide hydrolases or reductively by oxidoreductases. Here we report that fluostatins (FSTs), a family of atypical angucyclines with a benzofluorene core, can undergo nonenzyme-catalyzed epoxide ring opening reactions in the presence of flavin adenine dinucleotide (FAD) and nicotinamide adenine dinucleotide (NADH). The 2,3-epoxide ring in FST C is shown to open reductively via a putative enol intermediate, or oxidatively via a peroxylated intermediate with molecular oxygen as the oxidant. These reactions lead to multiple products with different redox states that possess a single hydroxyl group at C-2, a 2,3-vicinal diol, a contracted five-membered A-ring, or an expanded seven-membered A-ring. Similar reactions also take place in both natural products and other organic compounds harboring an epoxide adjacent to a carbonyl group that is conjugated to an aromatic moiety. Our findings extend the repertoire of known flavin chemistry that may provide new and useful tools for organic synthesis. Epoxide ring opening reactions are important in both biological processes and synthetic applications. Here, the authors show that flavin cofactors can catalyze reductive and oxidative epoxide ring opening reactions and propose the underlying mechanisms.
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13
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Meninno S, Lattanzi A. Epoxides: Small Rings to Play with under Asymmetric Organocatalysis. ACS ORGANIC & INORGANIC AU 2022; 2:289-305. [PMID: 35942279 PMCID: PMC9354533 DOI: 10.1021/acsorginorgau.2c00009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Optically pure epoxides
are recognized as highly valuable products
and key intermediates, useful in different areas from pharmaceutical
and agrochemical industries to natural product synthesis and materials
science. The predictable fate of the ring-opening process, in terms
of stereoselectivity and often of regioselectivity, enables useful
functional groups to be installed at vicinal carbon atoms in a desired
manner. In this way, products of widespread utility either for synthetic
applications or as final products can be obtained. The advent of asymmetric
organocatalysis provided a new convenient tool, not only for their
preparation but also for the elaboration of this class of heterocycles.
In this review, we focus on recent developments of stereoselective
organocatalytic ring-opening reactions of meso-epoxides,
kinetic resolution of racemic epoxides, and Meinwald-type rearrangement.
Examples of asymmetric organocatalytic processes toward specific synthetic
targets, which include ring opening of an epoxide intermediate, are
also illustrated.
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
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14
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Simões JB, Leite da Silva D, Fernandes SA, de Fátima Â. Calix[n]arenes in Action: Recent Applications in Organocatalysis. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Ângelo de Fátima
- Universidade Federal de Minas Gerais Departamento de Química Av. Pres. Antônio Carlos, 6627, Pampulha 31270-901 Belo Horizonte BRAZIL
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15
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Gupta Y, Sharma N, Singh S, Romero JG, Rajendran V, Mogire RM, Kashif M, Beach J, Jeske W, Poonam, Ogutu BR, Kanzok SM, Akala HM, Legac J, Rosenthal PJ, Rademacher DJ, Durvasula R, Singh AP, Rathi B, Kempaiah P. The Multistage Antimalarial Compound Calxinin Perturbates P. falciparum Ca 2+ Homeostasis by Targeting a Unique Ion Channel. Pharmaceutics 2022; 14:1371. [PMID: 35890267 PMCID: PMC9319510 DOI: 10.3390/pharmaceutics14071371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/30/2022] [Accepted: 06/07/2022] [Indexed: 12/22/2022] Open
Abstract
Malaria elimination urgently needs novel antimalarial therapies that transcend resistance, toxicity, and high costs. Our multicentric international collaborative team focuses on developing multistage antimalarials that exhibit novel mechanisms of action. Here, we describe the design, synthesis, and evaluation of a novel multistage antimalarial compound, 'Calxinin'. A compound that consists of hydroxyethylamine (HEA) and trifluoromethyl-benzyl-piperazine. Calxinin exhibits potent inhibitory activity in the nanomolar range against the asexual blood stages of drug-sensitive (3D7), multidrug-resistant (Dd2), artemisinin-resistant (IPC4912), and fresh Kenyan field isolated Plasmodium falciparum strains. Calxinin treatment resulted in diminished maturation of parasite sexual precursor cells (gametocytes) accompanied by distorted parasite morphology. Further, in vitro liver-stage testing with a mouse model showed reduced parasite load at an IC50 of 79 nM. A single dose (10 mg/kg) of Calxinin resulted in a 30% reduction in parasitemia in mice infected with a chloroquine-resistant strain of the rodent parasite P. berghei. The ex vivo ookinete inhibitory concentration within mosquito gut IC50 was 150 nM. Cellular in vitro toxicity assays in the primary and immortalized human cell lines did not show cytotoxicity. A computational protein target identification pipeline identified a putative P. falciparum membrane protein (Pf3D7_1313500) involved in parasite calcium (Ca2+) homeostasis as a potential Calxinin target. This highly conserved protein is related to the family of transient receptor potential cation channels (TRP-ML). Target validation experiments showed that exposure of parasitized RBCs (pRBCs) to Calxinin induces a rapid release of intracellular Ca2+ from pRBCs; leaving de-calcinated parasites trapped in RBCs. Overall, we demonstrated that Calxinin is a promising antimalarial lead compound with a novel mechanism of action and with potential therapeutic, prophylactic, and transmission-blocking properties against parasites resistant to current antimalarials.
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Affiliation(s)
- Yash Gupta
- Infectious Diseases, Mayo Clinic, Jacksonville, FL 32224, USA; (Y.G.); (R.D.)
| | - Neha Sharma
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, New Delhi 110021, India; (N.S.); (S.S.)
| | - Snigdha Singh
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, New Delhi 110021, India; (N.S.); (S.S.)
| | - Jesus G. Romero
- Stritch School of Medicine, Loyola University Chicago, Chicago, IL 60660, USA; (J.G.R.); (J.B.); (W.J.); (D.J.R.)
- School of Biology, Institute of Experimental Biology, Central University of Venezuela, Caracas 1040, Venezuela
| | - Vinoth Rajendran
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India;
| | - Reagan M. Mogire
- Centre Clinical Research, Kenya Medical Research Institute, Nairobi P.O. Box 54840-00200, Kenya; (R.M.M.); (B.R.O.); (H.M.A.)
| | - Mohammad Kashif
- Infectious Diseases Laboratory, National Institute of Immunology, New Delhi 110067, India; (M.K.); (A.P.S.)
| | - Jordan Beach
- Stritch School of Medicine, Loyola University Chicago, Chicago, IL 60660, USA; (J.G.R.); (J.B.); (W.J.); (D.J.R.)
| | - Walter Jeske
- Stritch School of Medicine, Loyola University Chicago, Chicago, IL 60660, USA; (J.G.R.); (J.B.); (W.J.); (D.J.R.)
| | - Poonam
- Department of Chemistry, Miranda House, University of Delhi, New Delhi 110021, India;
- Delhi School of Public Health, Institute of Eminence, University of Delhi, New Delhi 110007, India
| | - Bernhards R. Ogutu
- Centre Clinical Research, Kenya Medical Research Institute, Nairobi P.O. Box 54840-00200, Kenya; (R.M.M.); (B.R.O.); (H.M.A.)
| | - Stefan M. Kanzok
- Department of Biology, Loyola University Chicago, Chicago, IL 60660, USA;
| | - Hoseah M. Akala
- Centre Clinical Research, Kenya Medical Research Institute, Nairobi P.O. Box 54840-00200, Kenya; (R.M.M.); (B.R.O.); (H.M.A.)
| | - Jennifer Legac
- Department of Medicine, University of California San Francisco, San Francisco, CA 94158, USA; (J.L.); (P.J.R.)
| | - Philip J. Rosenthal
- Department of Medicine, University of California San Francisco, San Francisco, CA 94158, USA; (J.L.); (P.J.R.)
| | - David J. Rademacher
- Stritch School of Medicine, Loyola University Chicago, Chicago, IL 60660, USA; (J.G.R.); (J.B.); (W.J.); (D.J.R.)
- Core Imaging Facility and Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL 60153, USA
| | - Ravi Durvasula
- Infectious Diseases, Mayo Clinic, Jacksonville, FL 32224, USA; (Y.G.); (R.D.)
| | - Agam P. Singh
- Infectious Diseases Laboratory, National Institute of Immunology, New Delhi 110067, India; (M.K.); (A.P.S.)
| | - Brijesh Rathi
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, New Delhi 110021, India; (N.S.); (S.S.)
- Delhi School of Public Health, Institute of Eminence, University of Delhi, New Delhi 110007, India
| | - Prakasha Kempaiah
- Infectious Diseases, Mayo Clinic, Jacksonville, FL 32224, USA; (Y.G.); (R.D.)
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16
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Xu Y, Zhai TY, Xu Z, Ye LW. Recent advances towards organocatalytic enantioselective desymmetrizing reactions. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2021.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Nájera C, Foubelo F, Sansano JM, Yus M. Enantioselective desymmetrization reactions in asymmetric catalysis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132629] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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Verma S, Joshi A, De SR, Jat JL. Methyltrioxorhenium (MTO) catalysis in the epoxidation of alkenes: a synthetic overview. NEW J CHEM 2022. [DOI: 10.1039/d1nj04950j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Epoxides are biologically important moiety that is also used as synthetic intermediates. This review aims to present the up-to-date advancements in methyltrioxorhenium (MTO)-catalyzed epoxidation of alkenes using diverse oxidizing agents.
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Affiliation(s)
- Saumya Verma
- Department of Chemistry, School of Physical and Decision Science, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India
| | - Asha Joshi
- Department of Chemistry, National Institute of Technology, Uttarakhand, Srinagar Garhwal, Uttarakhand-246174, India
| | - Saroj Ranjan De
- Department of Chemistry, National Institute of Technology, Uttarakhand, Srinagar Garhwal, Uttarakhand-246174, India
| | - Jawahar L. Jat
- Department of Chemistry, School of Physical and Decision Science, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India
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19
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Mikhailov IE, Dushenko GA, Minkin VI. Pentacarboxycyclopentadienes in Organic Synthesis. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021110014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Zhang D, Li H, Yi D, Tu S, Qi Z, Wei S, Fu Q, Fu H, Du X. Ti-catalyzed regioselective ring-opening alkynylation of epoxides with haloalkynes. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Volpe C, Meninno S, Crescenzi C, Mancinelli M, Mazzanti A, Lattanzi A. Catalytic Enantioselective Access to Dihydroquinoxalinones via Formal α‐Halo Acyl Halide Synthon in One Pot. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132-84084 Fisciano Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132-84084 Fisciano Italy
| | - Carlo Crescenzi
- Dipartimento di Farmacia Università di Salerno Via Giovanni Paolo II 132-84084 Fisciano Italy
| | - Michele Mancinelli
- Dipartimento di Chimica Industriale Università di Bologna Viale Risorgimento 4-40136 Bologna Italy
| | - Andrea Mazzanti
- Dipartimento di Chimica Industriale Università di Bologna Viale Risorgimento 4-40136 Bologna Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132-84084 Fisciano Italy
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22
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Volpe C, Meninno S, Crescenzi C, Mancinelli M, Mazzanti A, Lattanzi A. Catalytic Enantioselective Access to Dihydroquinoxalinones via Formal α-Halo Acyl Halide Synthon in One Pot. Angew Chem Int Ed Engl 2021; 60:23819-23826. [PMID: 34437760 PMCID: PMC8596509 DOI: 10.1002/anie.202110173] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 11/25/2022]
Abstract
An enantioselective one-pot catalytic strategy to dihydroquinoxalinones, featuring novel 1-phenylsulfonyl-1-cyano enantioenriched epoxides as masked α-halo acyl halide synthons, followed by a domino ring-opening cyclization (DROC), is documented. A popular quinine-derived urea served as the catalyst in two out of the three steps performed in the same solvent using commercially available aldehydes, (phenylsulfonyl)acetonitrile, cumyl hydroperoxide and 1,2-phenylendiamines. Medicinally relevant 3-aryl/alkyl-substituted heterocycles are isolated in generally good to high overall yield and high enantioselectivity (up to 99 % ee). A rare example of excellent reusability of an organocatalyst at higher scale, subjected to oxidative conditions, is demonstrated. Mechanistically, labile α-ketosulfone has been detected as the intermediate involved in the DROC process. Theoretical calculations on the key epoxidation step rationalize the observed stereocontrol, highlighting the important role played by the sulfone group.
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Affiliation(s)
- Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli”Università di SalernoVia Giovanni Paolo II132-84084FiscianoItaly
| | - Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”Università di SalernoVia Giovanni Paolo II132-84084FiscianoItaly
| | - Carlo Crescenzi
- Dipartimento di FarmaciaUniversità di SalernoVia Giovanni Paolo II132-84084FiscianoItaly
| | - Michele Mancinelli
- Dipartimento di Chimica IndustrialeUniversità di BolognaViale Risorgimento4-40136BolognaItaly
| | - Andrea Mazzanti
- Dipartimento di Chimica IndustrialeUniversità di BolognaViale Risorgimento4-40136BolognaItaly
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”Università di SalernoVia Giovanni Paolo II132-84084FiscianoItaly
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23
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Abstract
Oxetanes are important motifs for drug discovery and are valuable templates in organic synthesis. Much of their use as synthetic intermediates exploits their inherent strain, often resulting in chain extensions at the expense of the heterocycle. Modifications on the carbon alpha to the oxygen of oxetanes, such as the C═O of β-lactones, extend the modes of reactivity. Nevertheless, the outcomes are still largely predictable. On the other hand, other alpha modifications, such as a ═CH2, a spiro-oxiranyl moiety, or a spiro-cyclopropyl group, increase strain and open pathways not available to simple oxetanes or β-lactones. Methods in generating 2-methyleneoxetanes, 1,5-dioxaspiro[3.2]hexanes, and 4-oxaspiro[2.3]hexanes have been developed by us and others. To date, reactions of these systems have sometimes been predictable, but often the outcomes have been unexpected. This has provided fertile ground for thinking about what controls reactivity and what other reaction pathways might be accessible to these strain-heightened oxetanes.This Account summarizes the published literature on the most straightforward approaches to 2-methyleneoxetanes, dioxaspirohexanes, and oxaspirohexanes and on their reactivity. In contrast to simple oxetanes, reactions of 2-methyleneoxetanes with nucleophiles at C4 release an enolate rather than an alkoxide. Also, 2-methyleneoxetanes can be converted to homopropargyl alcohols or undergo a silicon accelerated isomerization/electrocyclic ring opening, processes accessible only because of the exocyclic double bond. In addition, oxetane oxocarbenium ions, derived from protonation of the enol ether, can react with nucleophiles to provide 2,2-disubstituted oxetanes. Oxaspirohexanes are readily prepared by Simmons-Smith cyclopropanation of 2-methyleneoxetanes. These unusual systems undergo a variety of substituent dependent rearrangements in the presence of the Lewis acid BF3·Et2O. In addition, upon treatment with Zeise's dimer, oxaspirohexanes are transformed to synthetically useful 3-methylenetetrahydrofurans. Dioxaspirohexanes are easily accessed by dimethyldioxirane oxidation of 2-methyleneoxetanes. Predictably, dioxaspirohexanes react with many nucleophiles to give α-functionalized-β'-hydroxy ketones. Unexpectedly, 2,2-disubstituted oxetanes can also be selectively produced. This latter pathway has led to further unusual transformations, illuminating computational studies, and novel routes to biologically relevant molecules.
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Affiliation(s)
- Jason An
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Louis P. Riel
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Amy R. Howell
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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24
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Watanabe LK, Wrixon JD, Rawson JM. The chemistry of dithietes, 1,2,5,6-tetrathiocins and higher oligomers. Dalton Trans 2021; 50:13620-13633. [PMID: 34585192 DOI: 10.1039/d1dt02760c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and reactivity patterns of the strained dithiete ring are compared with their dimeric tetrathiocin counterparts and higher oligomers, highlighting: (i) their cycloaddition chemistry with organic dienophiles as a route to sulfur-containing heterocycles; (ii) their oxidative addition chemistry to low valent transition metal complexes to generate transition metal dithiolate complexes and; (iii) the base-catalysed isomerizations between different dithiete oligomers.
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Affiliation(s)
- Lara K Watanabe
- Department of Chemistry and Biochemistry, the University of Windsor, 401 Sunset Avenue, Windsor, ON, Canada N9B 3P4.
| | - Justin D Wrixon
- Department of Chemistry and Biochemistry, the University of Windsor, 401 Sunset Avenue, Windsor, ON, Canada N9B 3P4.
| | - Jeremy M Rawson
- Department of Chemistry and Biochemistry, the University of Windsor, 401 Sunset Avenue, Windsor, ON, Canada N9B 3P4.
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25
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Austermuehle BJ, Collins ES, Hamaker CG, Hitchcock SR. Synthetic preparation of N-alkyl and N-aryl arenesulfinamides using an arenesulfinic acid-CDI driven approach. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1981943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Erin S. Collins
- Department of Chemistry, Illinois State University, Normal, IL, USA
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26
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Sinha N, Singhal A, Sharma D, Chauhan SMS. Facile synthesis of vicinal halohydrins via organocatalytic halogen nucleophile-induced regioselective opening of epoxides. LETT ORG CHEM 2021. [DOI: 10.2174/1570178618666211001114243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The calix[4]pyrrole is reported as a novel organocatalyst for regioselective ring opening of epoxides under mild reaction conditions.
Methods:
The reaction involves elemental halogen as a nucleophile to afford vicinal halohydrins in good to excellent yield (75-95%).
Results :
The reactivity of the halide anion in the reaction is governed by different factors, including solvent polarity, temperature and non-covalent interactions of the functional group present on calix[4]pyrrole moiety with halide ions.
Conclusion:
An efficient methodology has been developed for the regioselective synthesis of halohydrins in good to excellent yields.
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Affiliation(s)
- Niharika Sinha
- Department of Chemistry, University of Delhi, New Delhi – 110 007, India
| | - Anchal Singhal
- Department of Chemistry, University of Delhi, New Delhi – 110 007, India
| | - Deeksha Sharma
- Department of Applied Chemistry, Gautam Buddha University, U. P. – 201308, India
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27
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Sandvoß A, Wiest JM. Recent Advances in Enantioselective Desymmetrizations of Prochiral Oxetanes. Chemistry 2021; 27:5871-5879. [PMID: 33274788 PMCID: PMC8049043 DOI: 10.1002/chem.202004923] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Indexed: 12/23/2022]
Abstract
Strain relief of oxetanes offers a plethora of opportunities for the synthesis of chiral alcohols and ethers. In this context, enantioselective desymmetrization has been identified as a powerful tool to construct molecular complexity and this has led to the development of elegant strategies on the basis of transition metal, Lewis acid, and Brønsted acid catalysis. This review highlights recent examples that harness the inherent reactivity of prochiral oxetanes and offers an outlook on the immense possibilities for synthetic application.
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Affiliation(s)
- Alexander Sandvoß
- Department ChemieJohannes Gutenberg Universität MainzDuesbergweg 10–1455128MainzGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Johannes M. Wiest
- Department ChemieJohannes Gutenberg Universität MainzDuesbergweg 10–1455128MainzGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
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28
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Liu W, Yang X. Recent Advances in (Dynamic) Kinetic Resolution and Desymmetrization Catalyzed by Chiral Phosphoric Acids. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100091] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Wei Liu
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 (P. R. China
- University of Chinese Academy of Sciences Beijing 100049 (P. R. China
- Shanghai Institute of Organic Chemistry Shanghai 200032 (P. R. China
| | - Xiaoyu Yang
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 (P. R. China
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29
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Wu X, Marks J, Wang C, Dickie D, Pu L. Enantioselective Sensing in the Fluorous Phase for Catalyst Screening: Application of a Racemic Fluorescent Probe. J Org Chem 2021; 86:4607-4615. [PMID: 33667096 DOI: 10.1021/acs.joc.1c00029] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A perfluoroalkyl ketone-based molecular probe was found to show highly enantioselective fluorescent enhancement in the fluorous phase when treated with an amino alcohol generated from the asymmetric reaction of a meso-epoxide with an alkyl amine. The two enantiomeric probes (R)- and (S)-2 were used to screen catalysts for this asymmetric reaction. The use of the probe in the fluorous phase allowed the fluorescent sensing of the products to be conducted away from the other reaction components with minimized interference. It was further found that when (R)- or (S)-2 was used to determine the enantiomeric composition of the amino alcohol product, there was a large nonlinear effect. That is, only when one enantiomer of the substrate was in excess was there a large fluorescence enhancement for the chirality-matched probe-substrate interaction. This allowed the racemic probe rac-2 to be used to evaluate the asymmetric induction in the catalyst screening. The catalyst screening using the fluorescent probes led to the discovery of a more enantioselective and efficient method for the desymmetrization of 1,2-epoxycyclohexane with iPrNH2 to form the corresponding chiral amino alcohol. This work presents a novel method to conduct catalyst screening for asymmetric synthesis and has potential to become a high-throughput process.
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Affiliation(s)
- Xuedan Wu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Julia Marks
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Chao Wang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Diane Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Lin Pu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
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30
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Malatinec Š, Bednářová E, Tanaka H, Kotora M. Highly Enantioselective Ring‐Opening of
meso‐
Epoxides with O‐ and
N‐
Nucleophiles Catalyzed by a Chiral Sc(III)/bipyridine Complex. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Štefan Malatinec
- Department of Organic Chemistry Chemistry Faculty of Science Charles University Albertov 6 128 43 Praha 2 Czech Republic
| | - Eva Bednářová
- Department of Organic Chemistry Chemistry Faculty of Science Charles University Albertov 6 128 43 Praha 2 Czech Republic
| | - Hiroki Tanaka
- Department of Organic Chemistry Chemistry Faculty of Science Charles University Albertov 6 128 43 Praha 2 Czech Republic
- A visiting student from Research Institute for Interdisciplinary Science Okayama University 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
| | - Martin Kotora
- Department of Organic Chemistry Chemistry Faculty of Science Charles University Albertov 6 128 43 Praha 2 Czech Republic
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31
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Bekfelavi EY, Yılmaz Ö, Şahin E, Şimşek Kuş N. Novel halo-molecules; synthesis, structure elucidation, mechanism, and antioxidant activity. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02746-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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32
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Maruoka H, Nagabuchi H, Masumoto E, Okabe-Nakahara F. Synthesis and Reaction of Novel Spiro Pyrazol-3-ones Containing Oxirane Moiety. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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33
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Zhang MZ, Tian J, Yuan M, Peng WQ, Wang YZ, Wang P, Liu L, Gou Q, Huang H, Chen T. Visible light-induced aerobic dioxygenation of α,β-unsaturated amides/alkenes toward selective synthesis of β-oxy alcohols using rose bengal as a photosensitizer. Org Chem Front 2021. [DOI: 10.1039/d1qo00149c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The first visible light-induced aerobic dioxygenation of alkenes for the selective synthesis of β-oxy alcohols was developed using non-toxic rose bengal as a photosensitizer.
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34
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Mishra AA, Bhanage BM. Ru-Tethered ( R,R)-TsDPEN with DMAB as an efficient catalytic system for high enantioselective one-pot synthesis of chiral β-aminol via asymmetric transfer hydrogenation. NEW J CHEM 2021. [DOI: 10.1039/d0nj06108e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reflects Ru-tethered-TsDPEN as an active chiral catalyst for one pot selective synthesis of optically active α-substituted alcohols and its derivatives from α-bromo ketones in the presence of dimethylamine borane (DMAB) as the hydrogen source.
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Affiliation(s)
- Ashish A. Mishra
- Department of Chemistry
- Institute of Chemical Technology
- Nathalal Parekh Marg
- Mumbai 400019
- India
| | - Bhalchandra M. Bhanage
- Department of Chemistry
- Institute of Chemical Technology
- Nathalal Parekh Marg
- Mumbai 400019
- India
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35
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Mechanistic investigation on the remote stereocontrol in the chiral Lewis base-catalyzed, SiCl4-promoted kinetic resolution of chlorinated cis-vinyl epoxides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Zhang L, De BC, Zhang W, Mándi A, Fang Z, Yang C, Zhu Y, Kurtán T, Zhang C. Mutation of an atypical oxirane oxyanion hole improves regioselectivity of the α/β-fold epoxide hydrolase Alp1U. J Biol Chem 2020; 295:16987-16997. [PMID: 33004437 PMCID: PMC7863881 DOI: 10.1074/jbc.ra120.015563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/25/2020] [Indexed: 01/13/2023] Open
Abstract
Epoxide hydrolases (EHs) have been characterized and engineered as biocatalysts that convert epoxides to valuable chiral vicinal diol precursors of drugs and bioactive compounds. Nonetheless, the regioselectivity control of the epoxide ring opening by EHs remains challenging. Alp1U is an α/β-fold EH that exhibits poor regioselectivity in the epoxide hydrolysis of fluostatin C (compound 1) and produces a pair of stereoisomers. Herein, we established the absolute configuration of the two stereoisomeric products and determined the crystal structure of Alp1U. A Trp-186/Trp-187/Tyr-247 oxirane oxygen hole was identified in Alp1U that replaced the canonical Tyr/Tyr pair in α/β-EHs. Mutation of residues in the atypical oxirane oxygen hole of Alp1U improved the regioselectivity for epoxide hydrolysis on 1. The single site Y247F mutation led to highly regioselective (98%) attack at C-3 of 1, whereas the double mutation W187F/Y247F resulted in regioselective (94%) nucleophilic attack at C-2. Furthermore, single-crystal X-ray structures of the two regioselective Alp1U variants in complex with 1 were determined. These findings allowed insights into the reaction details of Alp1U and provided a new approach for engineering regioselective epoxide hydrolases.
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Affiliation(s)
- Liping Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Bidhan Chandra De
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; University of the Chinese Academy of Sciences, Beijing, China
| | - Wenjun Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; University of the Chinese Academy of Sciences, Beijing, China.
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen, Debrecen, Hungary
| | - Zhuangjie Fang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; University of the Chinese Academy of Sciences, Beijing, China
| | - Chunfang Yang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Yiguang Zhu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; University of the Chinese Academy of Sciences, Beijing, China
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, Debrecen, Hungary
| | - Changsheng Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, Innovation Academy of South China Sea Ecology and Environmental Engineering, and South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; University of the Chinese Academy of Sciences, Beijing, China.
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37
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Shelton RE, Sezer S, Hodgson DM. Enantioselective desymmetrisation of an epoxytropinone for peduncularine synthesis. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Metrano AJ, Chinn AJ, Shugrue CR, Stone EA, Kim B, Miller SJ. Asymmetric Catalysis Mediated by Synthetic Peptides, Version 2.0: Expansion of Scope and Mechanisms. Chem Rev 2020; 120:11479-11615. [PMID: 32969640 PMCID: PMC8006536 DOI: 10.1021/acs.chemrev.0c00523] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Low molecular weight synthetic peptides have been demonstrated to be effective catalysts for an increasingly wide array of asymmetric transformations. In many cases, these peptide-based catalysts have enabled novel multifunctional substrate activation modes and unprecedented selectivity manifolds. These features, along with their ease of preparation, modular and tunable structures, and often biomimetic attributes make peptides well-suited as chiral catalysts and of broad interest. Many examples of peptide-catalyzed asymmetric reactions have appeared in the literature since the last survey of this broad field in Chemical Reviews (Chem. Rev. 2007, 107, 5759-5812). The overarching goal of this new Review is to provide a comprehensive account of the numerous advances in the field. As a corollary to this goal, we survey the many different types of catalytic reactions, ranging from acylation to C-C bond formation, in which peptides have been successfully employed. In so doing, we devote significant discussion to the structural and mechanistic aspects of these reactions that are perhaps specific to peptide-based catalysts and their interactions with substrates and/or reagents.
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Affiliation(s)
- Anthony J. Metrano
- AstraZeneca Oncology R&D, 35 Gatehouse Dr., Waltham, MA 02451, United States
| | - Alex J. Chinn
- Department of Chemistry, Princeton University, Princeton, NJ 08544, United States
| | - Christopher R. Shugrue
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Elizabeth A. Stone
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520, United States
| | - Byoungmoo Kim
- Department of Chemistry, Clemson University, Clemson, SC 29634, United States
| | - Scott J. Miller
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520, United States
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Bespalko Y, Sinel'nikova M, Shved E, Bakhalova E. Experimental and computational studies of the mechanism of base‐catalyzed ring opening of 2‐(chloromethyl)oxirane by benzoic acid. INT J CHEM KINET 2020. [DOI: 10.1002/kin.21448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuliia Bespalko
- Faculty of Chemistry, Biology and Biotechnologies Vasyl’ Stus Donetsk National University Vinnytsia Ukraine
| | | | - Elena Shved
- Faculty of Chemistry, Biology and Biotechnologies Vasyl’ Stus Donetsk National University Vinnytsia Ukraine
| | - Evgeniia Bakhalova
- Faculty of Chemistry, Biology and Biotechnologies Vasyl’ Stus Donetsk National University Vinnytsia Ukraine
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Hajra S, Roy S, Mondal AS. Co(III)salen Catalyzed Enantioselective C3‐Indolylation of Spiro‐Epoxyoxindoles and Its Mechanistic Studies. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000811] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Saumen Hajra
- Center of Biomedical Research Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus Raebareli Road Lucknow 226014 India
| | - Sayan Roy
- Center of Biomedical Research Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus Raebareli Road Lucknow 226014 India
| | - Ananda Shankar Mondal
- Center of Biomedical Research Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus Raebareli Road Lucknow 226014 India
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Abstract
This review concentrates on success stories from the synthesis of approved medicines and drug candidates using epoxide chemistry in the development of robust and efficient syntheses at large scale. The focus is on those parts of each synthesis related to the substrate-controlled/diastereoselective and catalytic asymmetric synthesis of epoxide intermediates and their subsequent ring-opening reactions with various nucleophiles. These are described in the form of case studies of high profile pharmaceuticals spanning a diverse range of indications and molecular scaffolds such as heterocycles, terpenes, steroids, peptidomimetics, alkaloids and main stream small molecules. Representative examples include, but are not limited to the antihypertensive diltiazem, the antidepressant reboxetine, the HIV protease inhibitors atazanavir and indinavir, efinaconazole and related triazole antifungals, tasimelteon for sleep disorders, the anticancer agent carfilzomib, the anticoagulant rivaroxaban the antibiotic linezolid and the antiviral oseltamivir. Emphasis is given on aspects of catalytic asymmetric epoxidation employing metals with chiral ligands particularly with the Sharpless and Jacobsen–Katsuki methods as well as organocatalysts such as the chiral ketones of Shi and Yang, Pages’s chiral iminium salts and typical chiral phase transfer agents.
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Wu B, Yang J, Gao M, Hu L. Ring-Strain-Enabled Catalytic Asymmetric Umpolung C–O Bond-Forming Reactions of 1,2-Oxazetidines for the Synthesis of Functionalized Chiral Ethers. Org Lett 2020; 22:5561-5566. [DOI: 10.1021/acs.orglett.0c01916] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Binyu Wu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Jinggang Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
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Ding D, Dong H, Wang C. Nickel-Catalyzed Asymmetric Domino Ring Opening/Cross-Coupling Reaction of Cyclobutanones via a Reductive Strategy. iScience 2020; 23:101017. [PMID: 32289735 PMCID: PMC7155205 DOI: 10.1016/j.isci.2020.101017] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/06/2020] [Accepted: 03/23/2020] [Indexed: 01/01/2023] Open
Abstract
Herein we demonstrate the successful application of reductive strategy in the asymmetric domino ring opening/cross-coupling reaction of prochiral cyclobutanones. Under the catalysis of a chiral nickel complex, various aryl iodide-tethered cyclobutanones were reacted with alkyl bromides as the electrophilic coupling partner, providing a variety of chiral indanones bearing a quaternary stereogenic center in highly enantioselective manner, which can be further converted to diverse benzene-fused cyclic compounds including indane, indene, dihydrocoumarin, and dihydroquinolinone. The preliminary mechanistic investigations support a mechanism involving Ni(I)-mediated enantiotopic C-C σ-bond activation of cyclobutanones as key elementary step in the catalytic cycle.
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Affiliation(s)
- Decai Ding
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Haiyan Dong
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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Rodriguez S, Uria U, Reyes E, Carrillo L, Tejero T, Merino P, Vicario JL. Enantioselective Synthesis of Tropanes: Brønsted Acid Catalyzed Pseudotransannular Desymmetrization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000650] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sandra Rodriguez
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Uxue Uria
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Efraim Reyes
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Luisa Carrillo
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Tomás Tejero
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)Universidad de Zaragoza CSIC 50009 Zaragoza Spain
| | - Pedro Merino
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI)Universidad de Zaragoza 50009 Zaragoza Spain
| | - Jose L. Vicario
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
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Lin Z, Lan Y, Wang C. Titanocene-Catalyzed Reductive Domino Epoxide Ring Opening/Defluorinative Cross-Coupling Reaction. Org Lett 2020; 22:3509-3514. [DOI: 10.1021/acs.orglett.0c00960] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Zhiyang Lin
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun Lan
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, P. R. China
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Rodriguez S, Uria U, Reyes E, Carrillo L, Tejero T, Merino P, Vicario JL. Enantioselective Synthesis of Tropanes: Brønsted Acid Catalyzed Pseudotransannular Desymmetrization. Angew Chem Int Ed Engl 2020; 59:6780-6784. [DOI: 10.1002/anie.202000650] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/05/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Sandra Rodriguez
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Uxue Uria
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Efraim Reyes
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Luisa Carrillo
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
| | - Tomás Tejero
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)Universidad de Zaragoza CSIC 50009 Zaragoza Spain
| | - Pedro Merino
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI)Universidad de Zaragoza 50009 Zaragoza Spain
| | - Jose L. Vicario
- Department of Organic Chemistry IIUniversity of the Basque Country (UPV/EHU) P.O. Box 644 48080 Bilbao Spain
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47
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Hajra S, Roy S. Feedback Inhibition in Chemical Catalysis Leads the Dynamic Kinetic to Kinetic Resolution in C3-Indolylation of Spiro-epoxyoxindoles. Org Lett 2020; 22:1458-1463. [DOI: 10.1021/acs.orglett.0c00028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Saumen Hajra
- Center of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India
| | - Sayan Roy
- Center of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India
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48
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Wu L, Shao Q, Kong L, Chen J, Wei Q, Zhang W. A Co(ii)-catalyzed asymmetric ring opening reaction of spiro-epoxyoxindoles with allylboron. Org Chem Front 2020. [DOI: 10.1039/d0qo00072h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A Co(ii)/BOX-catalyzed asymmetric allylation of spiroepoxyoxindoles was developed, which is the first stereoconvergent allylation of epoxides, yielding chiral oxindoles bearing quaternary stereocenters.
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Affiliation(s)
- Liang Wu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Qihang Shao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Li Kong
- 6th People's Hospital South Campus
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Jianzhong Chen
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Quhao Wei
- 6th People's Hospital South Campus
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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49
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Shpanko IV, Sadovaya IV. Isoenthalpy Catalytic Effects of Pyridines in Reactions of Phenyloxyrane with N-Aroylbenzenesulfonamides. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219120053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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An immobilized vanadium-binaphthylbishydroxamic acid complex as a reusable catalyst for the asymmetric epoxidation of allylic alcohols. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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