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Khan MEI, Cassini TL, Petrini M, Palmieri A. Synthesis of 3,5-disubstituted isoxazoles by domino reductive Nef reaction/cyclization of β-nitroenones. Org Biomol Chem 2024; 22:3299-3303. [PMID: 38577730 DOI: 10.1039/d4ob00232f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
β-Nitroenones can be efficiently converted into 3,5-disubstituted isoxazoles by using tin(II)chloride dihydrate and ethyl acetate as a reducing agent and solvent, respectively. Products are obtained in good yields and several functional groups are tolerated thanks to the mild reaction conditions.
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Affiliation(s)
| | - Tomas Lighuen Cassini
- University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, MC, Italy.
| | - Marino Petrini
- University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, MC, Italy.
| | - Alessandro Palmieri
- University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, MC, Italy.
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2
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Gerontitis IE, Tsoungas PG, Varvounis G. Naphtho[1,8- de][1,2]Oxazin-4-ol: Precursor to 1,2,8-Trisubstituted Naphthalenes and 1-Unsubstituted Naphtho[1,2- d]isoxazole 2-Oxide: A Novel Isomerization of the N-Oxide to Nitrile Oxide en Route to Isoxazol(in)es. Molecules 2023; 29:48. [PMID: 38202629 PMCID: PMC10779812 DOI: 10.3390/molecules29010048] [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: 11/08/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Naphtho[1,8-de][1,2]oxazin-4-ol and its acyl or benzyl derivatives ring open to various 2,8-dihydroxy-1-naphthonitriles, which, through (de)protection protocols and reduction, afford the target (E)-2-hydroxy-8-methoxy-1-naphthaldehyde. This was converted to its corresponding oxime, which was oxidatively o-cyclized with phenyliodine(III) diacetate (PIDA) to 9-methoxynaphtho[1,2-d]isoxazole 2-oxide. The latter, in deuterated DMSO at room temperature, was rearranged to its isomer 2-hydroxy-8-methoxy(naphthalen-1-yl)nitrile oxide. The isomerization was detected by time-course plot 1H NMR spectroscopy and further identified from its 13C NMR and HRMS spectra. The nitrile oxide was stable in (non)deuterated DMSO for at least 18 h. A 3,4-bis(2-hydroxy-8-methoxynaphthalen-1-yl)-1,2,5-oxadiazole 2-oxide, as a dimerization product or an isocyanate as a rearrangement isomer, was ruled out, the former by its HRMS spectrum and the latter by its 1,3-dipolar cycloaddition reactions to substituted isoxazoles.
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Affiliation(s)
- Ioannis E. Gerontitis
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 451 10 Ioannina, Greece;
| | - Petros G. Tsoungas
- Department of Biochemistry, Hellenic Pasteur Institute, 127 Vas. Sofias Ave., 115 21 Athens, Greece;
| | - George Varvounis
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 451 10 Ioannina, Greece;
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3
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Miranda-Vera C, Hernández ÁP, García-García P, Díez D, García PA, Castro MÁ. Podophyllotoxin: Recent Advances in the Development of Hybridization Strategies to Enhance Its Antitumoral Profile. Pharmaceutics 2023; 15:2728. [PMID: 38140069 PMCID: PMC10747284 DOI: 10.3390/pharmaceutics15122728] [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: 10/02/2023] [Revised: 11/22/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Podophyllotoxin is a naturally occurring cyclolignan isolated from rhizomes of Podophyllum sp. In the clinic, it is used mainly as an antiviral; however, its antitumor activity is even more interesting. While podophyllotoxin possesses severe side effects that limit its development as an anticancer agent, nevertheless, it has become a good lead compound for the synthesis of derivatives with fewer side effects and better selectivity. Several examples, such as etoposide, highlight the potential of this natural product for chemomodulation in the search for new antitumor agents. This review focuses on the recent chemical modifications (2017-mid-2023) of the podophyllotoxin skeleton performed mainly at the C-ring (but also at the lactone D-ring and at the trimethoxyphenyl E-ring) together with their biological properties. Special emphasis is placed on hybrids or conjugates with other natural products (either primary or secondary metabolites) and other molecules (heterocycles, benzoheterocycles, synthetic drugs, and other moieties) that contribute to improved podophyllotoxin bioactivity. In fact, hybridization has been a good strategy to design podophyllotoxin derivatives with enhanced bioactivity. The way in which the two components are joined (directly or through spacers) was also considered for the organization of this review. This comprehensive perspective is presented with the aim of guiding the medicinal chemistry community in the design of new podophyllotoxin-based drugs with improved anticancer properties.
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Affiliation(s)
- Carolina Miranda-Vera
- Laboratorio de Química Farmacéutica, Departamento de Ciencias Farmacéuticas, CIETUS, IBSAL, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain; (C.M.-V.); (Á.P.H.); (P.G.-G.); (P.A.G.)
| | - Ángela Patricia Hernández
- Laboratorio de Química Farmacéutica, Departamento de Ciencias Farmacéuticas, CIETUS, IBSAL, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain; (C.M.-V.); (Á.P.H.); (P.G.-G.); (P.A.G.)
| | - Pilar García-García
- Laboratorio de Química Farmacéutica, Departamento de Ciencias Farmacéuticas, CIETUS, IBSAL, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain; (C.M.-V.); (Á.P.H.); (P.G.-G.); (P.A.G.)
| | - David Díez
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Salamanca, 37008 Salamanca, Spain;
| | - Pablo Anselmo García
- Laboratorio de Química Farmacéutica, Departamento de Ciencias Farmacéuticas, CIETUS, IBSAL, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain; (C.M.-V.); (Á.P.H.); (P.G.-G.); (P.A.G.)
| | - María Ángeles Castro
- Laboratorio de Química Farmacéutica, Departamento de Ciencias Farmacéuticas, CIETUS, IBSAL, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain; (C.M.-V.); (Á.P.H.); (P.G.-G.); (P.A.G.)
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4
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Sadchikova EV, Safronov NE, Beliaev NA, Nenajdenko VG, Belskaya NP. Isoxazolyl-Derived 1,4-Dihydroazolo[5,1- c][1,2,4]Triazines: Synthesis and Photochemical Properties. Molecules 2023; 28:molecules28073192. [PMID: 37049955 PMCID: PMC10095850 DOI: 10.3390/molecules28073192] [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: 03/14/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 04/14/2023] Open
Abstract
New fluorescent dyes containing an assembled 1,4-dihydroazolo[5,1-c][1,2,4]triazine (DAT) core and an isoxazole ring were synthesized through a reaction between diazopyrazole or diazoimidazoles and isoxazolyl-derived enamines in mild conditions. The photophysical characteristics (maxima absorption and emission, Stokes shifts, fluorescent quantum yields, and fluorescence lifetimes) of the new fluorophores were obtained. The prepared DATs demonstrated emission maxima ranging within 433-487 nm, quantum yields within 6.1-33.3%, and a large Stokes shift. The photophysical characteristics of representative DAT examples were studied in ten different solvents. Specific (hydrogen bonds) and non-specific (dipole-dipole) intermolecular and intramolecular interactions were analyzed using XRD data and spectral experiments. Solvatochromism was analyzed using Lippert-Mataga and Dimroth-Reichardt plots, revealing the relationship between the DAT structure and the nature of solute-solvent interactions. The significant advantages of DATs are the fluorescence of their powders (QY up to 98.7%). DAT-NMe210 expressed bright aggregation-induced emission (AIE) behavior in DMSO and THF as the water content increased. The numerous possible variations of the structures of the heterocycles included in the DATs, as well as substituents, create excellent prospects for adjusting their photophysical and physicochemical properties.
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Affiliation(s)
- Elena V Sadchikova
- Department of Technology for Organic Synthesis, Ural Federal University, 620002 Ekaterinburg, Russia
| | - Nikita E Safronov
- Department of Technology for Organic Synthesis, Ural Federal University, 620002 Ekaterinburg, Russia
| | - Nikolai A Beliaev
- Department of Technology for Organic Synthesis, Ural Federal University, 620002 Ekaterinburg, Russia
| | | | - Nataliya P Belskaya
- Department of Technology for Organic Synthesis, Ural Federal University, 620002 Ekaterinburg, Russia
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5
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Brandner L, Müller TJJ. Multicomponent synthesis of chromophores – The one-pot approach to functional π-systems. Front Chem 2023; 11:1124209. [PMID: 37007054 PMCID: PMC10065161 DOI: 10.3389/fchem.2023.1124209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 01/26/2023] [Indexed: 03/19/2023] Open
Abstract
Multicomponent reactions, conducted in a domino, sequential or consecutive fashion, have not only considerably enhanced synthetic efficiency as one-pot methodology, but they have also become an enabling tool for interdisciplinary research. The highly diversity-oriented nature of the synthetic concept allows accessing huge structural and functional space. Already some decades ago this has been recognized for life sciences, in particular, lead finding and exploration in pharma and agricultural chemistry. The quest for novel functional materials has also opened the field for diversity-oriented syntheses of functional π-systems, i.e. dyes for photonic and electronic applications based on their electronic properties. This review summarizes recent developments in MCR syntheses of functional chromophores highlighting syntheses following either the framework forming scaffold approach by establishing connectivity between chromophores or the chromogenic chromophore approach by de novo formation of chromophore of interest. Both approaches warrant rapid access to molecular functional π-systems, i.e. chromophores, fluorophores, and electrophores for various applications.
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6
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Tzeli D, Gerontitis IE, Petsalakis ID, Tsoungas PG, Varvounis G. Self Cycloaddition of o-Naphthoquinone Nitrosomethide to (±) Spiro{naphthalene(naphthopyranofurazan)}-one Oxide: An Insight into its Formation. Chempluschem 2022; 87:e202200313. [PMID: 36479609 DOI: 10.1002/cplu.202200313] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/22/2022] [Indexed: 11/25/2022]
Abstract
2-Hydroxy-1-naphthaldehyde oxime was oxidized by AgO (or Ag2 O), in presence of N-methyl morpholine N-oxide (NMMO), to the title spiro adduct-dimer (±)-Spiro{naphthalene-1(2H),4'-(naphtho[2',1':2,3]pyrano[4,5-c]furazan)}-2-one-11'-oxide by a Diels-Alder(D-A) type self-cycloaddition, through the agency of an o-naphthoquinone nitrosomethide (o-NQM). Moreover, 2-hydroxy-8-methoxy-1-naphthaldehyde oxime was prepared and subjected to the same oxidation conditions. Its sterically guided result, 9-methoxynaphtho[1,2-d]isoxazole, was isolated, instead of the expected spiro adduct. The peri intramolecular H bonding in the oxime is considered to have a key contribution to the outcome. Geometry and energy features of the oxidant- and stereo-guided selectivity of both oxidation outcomes have been explored by DFT, perturbation theory and coupled cluster calculations. The reaction free energy of the D-A intermolecular cycloaddition is calculated at -82.0 kcal/mol, indicating its predominance over the intramolecular cyclization of ca. -37.6 kcal/mol. The cycloaddition is facilitated by NMMO through dipolar interactions and hydrogen bonding with both metal complexes and o-NQM. The 8(peri)-OMe substitution of the reactant oxime sterically impedes formation of the spiro adduct, instead it undergoes a more facile cyclodehydration to the isoxazole structure by ca. 4.9 kcal/mol.
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Affiliation(s)
- Demeter Tzeli
- Laboratory of Physical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou Athens, 157 84, Athens, Greece
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 116 35, Greece
| | - Ioannis E Gerontitis
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 451 10, Ioannina, Greece
| | - Ioannis D Petsalakis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 116 35, Greece
| | - Petros G Tsoungas
- Department of Biochemistry, Hellenic Pasteur Institute, 127 Vas. Sofias Ave., 115 21, Athens, Greece
| | - George Varvounis
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 451 10, Ioannina, Greece
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7
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Pd-Catalyzed Heteroannulation of Isoxazoles: Convergent Synthesis of Isoxazolo[5,4-c]quinolines. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Yoon J, Liu X, Lee EC. Defect Passivation via Isoxazole Doping in Perovskite Solar Cells. ACS OMEGA 2022; 7:34278-34285. [PMID: 36188244 PMCID: PMC9520746 DOI: 10.1021/acsomega.2c03775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/01/2022] [Indexed: 06/16/2023]
Abstract
To improve perovskite solar cell (PSC) performance, which is deeply related to perovskite layer quality, researchers have explored numerous strategies. Additive doping into perovskite precursors has been widely used to improve the PSC performance. In this study, we used isoxazole-a Lewis-base small molecule-as an additive for the CH3NH3PbI3 (MAPbI3) precursor and explored how isoxazole effectively passivates defects in the perovskite structure. We found that isoxazole interacted with undercoordinated Pb2+ ions from an X-ray photoelectron spectroscopy survey and verified that isoxazole doping improved the device performance. When the optimized concentration of isoxazole was doped in the MAPbI3 precursor, the power conversion efficiency increased from 15.6 to 17.5%, with an improved fill factor and short-circuit current density. In addition, an isoxazole-doped device sustained 94% of its initial performance after 8 days under ambient air conditions (10 ± 5 RH %, 25 °C), whereas a device without isoxazole doping only maintained 64% of its initial performance.
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Affiliation(s)
- Jinho Yoon
- Department
of Nanoscience and Technology, Graduate School, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Xuewen Liu
- Department
of Physics, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Eun-Cheol Lee
- Department
of Nanoscience and Technology, Graduate School, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
- Department
of Physics, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
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9
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Bisht S, Kumar L, Kaul G, Akhir A, Saxena D, Chopra S, Karthik R, Goyal N, Batra S. Synthesis and Biological Evaluation of Substituted 3‐Isoxazolethioethers as Antileishmanial and Antibacterial Agents. ChemistrySelect 2022. [DOI: 10.1002/slct.202201664] [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)
- Shweta Bisht
- Medicinal and Process Chemistry Division CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 UP India
| | - Lalan Kumar
- Medicinal and Process Chemistry Division CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 UP India
| | - Grace Kaul
- Molecular Microbiology and Immunology Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
| | - Abdul Akhir
- Molecular Microbiology and Immunology Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
| | - Deepanshi Saxena
- Molecular Microbiology and Immunology Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
| | - Sidharth Chopra
- Molecular Microbiology and Immunology Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
| | - R. Karthik
- Biochemistry Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
| | - Neena Goyal
- Biochemistry Division CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
| | - Sanjay Batra
- Medicinal and Process Chemistry Division CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031 UP India
- Academy of Scientific and Innovative Research CSIR- Human Resource Development Centre CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002 UP India
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10
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Li W, Zhang J, Wang M, Dong R, Zhou X, Zheng X, Sun L. Pyrimidine-fused Dinitrogenous Penta-heterocycles as a Privileged Scaffold for Anti-Cancer Drug Discovery. Curr Top Med Chem 2022; 22:284-304. [PMID: 35021973 DOI: 10.2174/1568026622666220111143949] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 12/30/2021] [Accepted: 12/30/2021] [Indexed: 11/22/2022]
Abstract
Pyrimidine-fused derivatives that are the inextricable part of DNA and RNA play a key role in the normal life cycle of cells. Pyrimidine-fused dinitrogenous penta-heterocycles including pyrazolopyrimidines and imidazopyrimidines is a special class of pyrimidine-fused compounds contributing to an important portion in anti-cancer drug discovery, which have been discovered as core structure for promising anti-cancer agents used in clinic or clinical evaluations. Pyrimidine-fused dinitrogenous penta-heterocycles have become one privileged scaffold for anti-cancer drug discovery. This review consists of the recent progress of pyrimidine-fused dinitrogenous penta-heterocycles as anti-cancer agents and their synthetic strategies. In addition, this review also summarizes some key structure-activity relationships (SARs) of pyrimidine-fused dinitrogenous penta-heterocycle derivatives as anti-cancer agents.
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Affiliation(s)
- Wen Li
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jinyang Zhang
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Min Wang
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Ru Dong
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Xin Zhou
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Xin Zheng
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Liping Sun
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
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Zhang Y, Long Z, Yan L, Liu L, Yang L, Le Y. Discovery of 4-nitro-3-phenylisoxazole derivatives as potent antibacterial agents derived from the studies of [3 + 2] cycloaddition. RSC Adv 2022; 12:25633-25638. [PMID: 36199305 PMCID: PMC9455768 DOI: 10.1039/d2ra05009a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 08/21/2022] [Indexed: 12/04/2022] Open
Abstract
Polysubstituted phenylisoxazoles were designed and synthesized to discover new antibacterial agents via [3 + 2] cycloaddition. Thirty-five compounds with a phenylisoxazole scaffold were characterized by NMR, HRMS, and X-ray techniques. After being evaluated against Xanthomonas oryzae (Xoo), Pseudomonas syringae (Psa), and Xanthomonas axonopodis (Xac), 4-nitro-3-phenylisoxazole derivatives were found to better antibacterial activities. Further studies have shown that the EC50 values of these compounds were much better than that of the positive control, bismerthiazol. Thirty-five compounds with phenylisoxazole scaffold were synthesized via [3+2] cycloaddition. After being evaluated against Xoo, Psa and Xac, 4-nitro-3-phenylisoxazole derivatives were found well antibacterial activities.![]()
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Affiliation(s)
- Yan Zhang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Zhiwu Long
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Longjia Yan
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guiyang 550025, China
| | - Li Liu
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guiyang 550025, China
| | - Lan Yang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guiyang 550025, China
| | - Yi Le
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guiyang 550025, China
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12
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Madhavan S, Keshri SK, Kapur M. Transition Metal‐Mediated Functionalization of Isoxazoles: A Review. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100560] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Suchithra Madhavan
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462066, MP India
| | - Santosh Kumar Keshri
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462066, MP India
| | - Manmohan Kapur
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462066, MP India
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13
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Chaplygin DA, Gorbunov YK, Fershtat LL. Ring Distortion Diversity‐Oriented Approach to Fully Substituted Furoxans and Isoxazoles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Daniil A. Chaplygin
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russia
| | - Yaroslav K. Gorbunov
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russia
- Department of Chemistry M.V. Lomonosov Moscow State University 119991 Leninskie Gory 1-3 Moscow Russia
| | - Leonid L. Fershtat
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russia
- National Research University Higher School of Economics 101000 Myasnitskaya str. 20 Moscow Russia
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14
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Cheremnykh KP, Savelyev VA, Shults EE. An Efficient Access to 3,5‐Disubstituted Isoxazoles with Anthranilate Ester Moiety: Alkaloid Lappaconitine – Aryl Conjugates with an Isoxazole Linker. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kirill P. Cheremnykh
- Laboratory of Medicinal Chemistry Novosibirsk institute of Organic Chemistry Lavrentyev Ave 9 630090 Novosibirsk Russian Federation
| | - Victor A. Savelyev
- Laboratory of Medicinal Chemistry Novosibirsk institute of Organic Chemistry Lavrentyev Ave 9 630090 Novosibirsk Russian Federation
| | - Elvira E. Shults
- Laboratory of Medicinal Chemistry Novosibirsk institute of Organic Chemistry Lavrentyev Ave 9 630090 Novosibirsk Russian Federation
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15
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Fadeeva AA, Ioffe SL, Tabolin AA. Dehydration of isoxazoline N-oxides under electrophilic conditions – An alternative approach toward 3-haloisoxazoles. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Design, Ultrasonic-assisted Synthesis and Evaluation In vitro Antimicrobial Activity of Bis-isoxazole Derivatives Bearing Chloro-pyridinyl Group. Chem Res Chin Univ 2021. [DOI: 10.1007/s40242-021-0009-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Liao J, Dong J, Xu J, Wang W, Wu Y, Hou Y, Guo H. Phosphine-Catalyzed [3 + 2] Annulation of Morita–Baylis–Hillman Carbonates with Isoxazole-Based Alkenes. J Org Chem 2021; 86:2090-2099. [DOI: 10.1021/acs.joc.0c01948] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianning Liao
- Department of Chemistry, China Agricultural University, Beijing 100193, China
| | - Jipan Dong
- Department of Chemistry, China Agricultural University, Beijing 100193, China
| | - Jiaqing Xu
- Department of Chemistry, China Agricultural University, Beijing 100193, China
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yuxia Hou
- Department of Chemistry, China Agricultural University, Beijing 100193, China
| | - Hongchao Guo
- Department of Chemistry, China Agricultural University, Beijing 100193, China
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18
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19
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Nakamura I, Hirayama A, Gima S, Terada M. Exo-Cyclization: Intermolecular Methylene Transfer Sequence in Au-Catalyzed Reactions of O-Homopropargylic Oximes. Chemistry 2020; 26:15816-15820. [PMID: 32618375 DOI: 10.1002/chem.202002764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Indexed: 02/02/2023]
Abstract
The Au-catalyzed reactions of O-homopropaylic oximes afforded the 3-alkenylated isoxazolines in good to high yields. The mechanistic studies suggest that the reaction proceeds through an exo-cyclization followed by intermolecular methylene group transfer. In addition, oligomeric species of the starting material were observed in the reaction mixture by mass spectra, supporting our proposed mechanism, which proceeds through a repeated intermolecular C-C bond forming process.
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Affiliation(s)
- Itaru Nakamura
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai, 9808578, Japan
| | - Arinobu Hirayama
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai, 9808578, Japan
| | - Shinya Gima
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai, 9808578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai, 9808578, Japan
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20
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Rapid Sequentially Palladium Catalyzed Four-Component Synthesis of Novel Fluorescent Biaryl-Substituted Isoxazoles. Catalysts 2020. [DOI: 10.3390/catal10121412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
A series of novel 3- and 5-biaryl-substituted isoxazoles was prepared by a rapid microwave-assisted four-component three-step synthesis: concatenating Sonogashira coupling, cyclocondensation, and Suzuki coupling in a one-pot fashion. The Pd-catalyst was successfully employed in the sense of a sequentially catalyzed process, i.e., without the addition of further catalyst loading. Biaryl-substituted isoxazoles with donor–acceptor decoration possess remarkable photophysical properties, such as high fluorescence quantum yields in solution up to ΦF = 0.86 and large Stokes shifts up to 10,000 cm−1. The experimental absorption and emission characteristics can be reproduced and rationalized by computations on the DFT (density functional theory) and TDDFT (time-dependent density functional theory) level of theory.
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21
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Zia M, Hameed S, Ahmad I, Tabassum N, Yousuf S. Regio-isomeric isoxazole sulfonates: Synthesis, characterization, electrochemical studies and DNA binding activity. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128635] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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The main directions and recent trends in the synthesis and use of isoxazoles. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02718-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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23
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Fritsch L, Baptista LA, Bechtold IH, Araújo G, Mandle RJ, Merlo AA. Isoxazoline- and isoxazole-liquid crystalline schiff bases: A puzzling game dictated by entropy and enthalpy effects. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111750] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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24
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Chalyk BA, Khutorianskyi A, Lysenko A, Fil Y, Kuchkovska YO, Gavrilenko KS, Bakanovych I, Moroz YS, Gorlova AO, Grygorenko OO. Regioselective Synthesis of Functionalized 3- or 5-Fluoroalkyl Isoxazoles and Pyrazoles from Fluoroalkyl Ynones and Binucleophiles. J Org Chem 2019; 84:15212-15225. [PMID: 31661620 DOI: 10.1021/acs.joc.9b02258] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A facile synthetic route toward either 3- or 5-fluoroalkyl-substituted isoxazoles or pyrazoles containing an additional functionalization site was developed and applied on a multigram scale. The elaborated approach extends the scope of fluoroalkyl substituents for introduction into the heterocyclic moiety, and uses convenient transformations of the side chain for incorporation of fluoroalkyl-substituted azoles into the structures of biologically active molecules. The utility of the obtained building blocks for isosteric replacement of alkyl-substituted isoxazole and pyrazole was shown by the synthesis of fluorinated Isocarboxazid and Mepiprazole analogues.
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Affiliation(s)
- Bohdan A Chalyk
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Institute of Organic Chemistry , National Academy of Sciences of Ukraine , Murmanska Street 5 , Kyiv 02660 , Ukraine
| | - Andrii Khutorianskyi
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Andrii Lysenko
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Yulia Fil
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Yuliya O Kuchkovska
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Konstantin S Gavrilenko
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Iulia Bakanovych
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Yurii S Moroz
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine.,Chemspace , Ilukstes iela 38-5 , Riga , LV - 1082 , Latvia
| | - Alina O Gorlova
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Institute of Organic Chemistry , National Academy of Sciences of Ukraine , Murmanska Street 5 , Kyiv 02660 , Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd. , Chervonotkatska Street 78 , Kyiv 02094 , Ukraine.,Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
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25
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Serebryannikova AV, Galenko EE, Novikov MS, Khlebnikov AF. Synthesis of Isoxazole- and Oxazole-4-carboxylic Acids Derivatives by Controlled Isoxazole-Azirine-Isoxazole/Oxazole Isomerization. J Org Chem 2019; 84:15567-15577. [PMID: 31658810 DOI: 10.1021/acs.joc.9b02536] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first synthesis of isoxazole-4-carboxylic acid derivatives by domino isoxazole-isoxazole isomerization is reported. Fe(II)-catalyzed isomerization of 4-acyl-5-methoxy-/5-aminoisoxazoles (dioxane, 105 °C) leads to the formation of isoxazole-4-carboxylic esters and amides in good yields. 4-Formyl-5-methoxyisoxazoles give methyl oxazole-4-carboxylates under the same reaction conditions. Fe(II)-catalyzed isomerization of 4-acyl-5-methoxyisoxazoles under milder conditions (MeCN, 50 °C) allows the preparation of transient 2-acyl-2-(methoxycarbonyl)-2H-azirines. The azirines isomerize quantitatively either into isoxazoles under catalytic conditions (dioxane, 105 °C) or into oxazoles under noncatalytic thermolysis (o-dichlorobenzene, 170 °C). The mechanism of the isomerization and dependence of the reaction routes on substituents at starting isoxazole core and reaction conditions are discussed on the basis of DFT calculations.
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Affiliation(s)
- Anna V Serebryannikova
- Institute of Chemistry , Saint Petersburg State University , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Ekaterina E Galenko
- Institute of Chemistry , Saint Petersburg State University , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Mikhail S Novikov
- Institute of Chemistry , Saint Petersburg State University , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Alexander F Khlebnikov
- Institute of Chemistry , Saint Petersburg State University , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
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26
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Ushakov PY, Khatuntseva EA, Nelyubina YV, Tabolin AA, Ioffe SL, Sukhorukov AY. Synthesis of Isoxazolines from Nitroalkanes
via
a [4+1]‐Annulation Strategy. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901000] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pavel Yu. Ushakov
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russian Federation
- Department of ChemistryM. V. Lomonosov Moscow State University 119991 Leninskie gory, 1, str. 3 Moscow Russian Federation
| | - Elizaveta A. Khatuntseva
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russian Federation
| | - Yulia V. Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds 119991 Vavilov str. 28 Moscow Russian Federation
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russian Federation
| | - Alexey Yu. Sukhorukov
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 119991 Leninsky prospect, 47 Moscow Russian Federation
- D. Mendeleev University of Chemical Technology of Russia 125047 Miusskaya sq., 9 Moscow Russian Federation
- Plekhanov Russian University of Economics 117997 Stremyanny per. 36 Moscow Russian Federation
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27
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Barak DS, Dahatonde DJ, Batra S. Microwave‐Assisted Metal‐Free Decarboxylative Iodination/Bromination of Isoxazole‐4‐carboxylic Acids. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Dinesh S. Barak
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031, Uttar Pradesh India
| | - Dipak J. Dahatonde
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031, Uttar Pradesh India
| | - Sanjay Batra
- Medicinal and Process Chemistry DivisionCSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension Sitapur Road Lucknow 226031, Uttar Pradesh India
- Academy of Scientific and Innovative ResearchCSIR- Human Resource Development Centre (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar Ghaziabad- 201002, Uttar Pradesh India
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28
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Facile, capable, atom-economical one-pot multicomponent strategy for the direct regioselective synthesis of novel isoxazolo[5,4-d]pyrimidines. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03757-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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29
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Sun W, Jiang F, Liu H, Gao X, Jia H, Zhang C, Guo H. Double [3 + 2] cycloaddition of nitrile oxides with allenoates: Synthesis of spirobidihydroisoxazoles. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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30
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Lemport PS, Smolyar IV, Khrustalev VN, Roznyatovsky VA, Popov AV, Kobelevskaya VA, Rozentsveig IB, Nenajdenko VG. 3,3-Diazidoenones – new types of highly reactive bis-azides. Preparation and synthetic transformations. Org Chem Front 2019. [DOI: 10.1039/c8qo01214h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of highly reactive 3,3-diazidoenones was obtained. Their chemistry was investigated by both experimental studies and DFT calculations.
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Affiliation(s)
- Pavel S. Lemport
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russian Federation
| | - Ivan V. Smolyar
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russian Federation
| | - Victor N. Khrustalev
- Department of Inorganic Chemistry
- Peoples’ Friendship University of Russia
- Russian Federation
| | | | - Alexander V. Popov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Russian Federation
| | - Valentina A. Kobelevskaya
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Russian Federation
| | - Igor B. Rozentsveig
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Russian Federation
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31
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Affiliation(s)
- Clemens Lamberth
- Syngenta Crop Protection AG; Chemical Research; Schaffhauserstrasse 101 Stein CH-4332 Switzerland
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32
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Bystrov DM, Zhilin ES, Fershtat LL, Romanova AA, Ananyev IV, Makhova NN. Tandem Condensation/Rearrangement Reaction of 2-AminohetareneN-Oxides for the Synthesis of Hetaryl Carbamates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800407] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Dmitry M. Bystrov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 119991 Moscow Russian Federation
- Department of Chemistry; Moscow State University; 119991 Moscow Leninskie Gory 1-3 Russian Federation
| | - Egor S. Zhilin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 119991 Moscow Russian Federation
- Department of Chemistry; Moscow State University; 119991 Moscow Leninskie Gory 1-3 Russian Federation
| | - Leonid L. Fershtat
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 119991 Moscow Russian Federation
| | - Anna A. Romanova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; 28 Vavilova str. 119991 Moscow Russian Federation
- D. Mendeleev University of Chemical Technology of Russia, Higher Chemical College; Miusskaya sq. 9 125047 Moscow Russian Federation
| | - Ivan V. Ananyev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; 28 Vavilova str. 119991 Moscow Russian Federation
| | - Nina N. Makhova
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 119991 Moscow Russian Federation
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