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Elsisi DM, Mohamed AM, Seadawy MG, Ahmed A, Abou-Amra ES. One pot multi-component synthesis of novel functionalized pyrazolo furan-2(5H)-one derivatives: in vitro, DFT, molecular docking, and pharmacophore studies, as coronavirus inhibitors. Mol Divers 2024:10.1007/s11030-024-10885-x. [PMID: 39168959 DOI: 10.1007/s11030-024-10885-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 04/23/2024] [Indexed: 08/23/2024]
Abstract
New and facile one-pot approach for the syntheses of 12 derivatives of 3,5-disubstituted furane-2(5H)-one (4a-l) from easily available starting materials. The suitable synthetic procedures for selective synthesis of diverse furane-2(5H)-one derivatives were achieved via multi-component condensation of 1,3-diphenyl-1H-pyrazole-4-carbaldehyde (1), pyruvic acid and different aromatic amines 3a-l in good to high yields and short reaction time by refluxing in acetic acid as well as obtained by another method (method B) when unsaturated arylidene pyruvic acid 6 was refluxed with different aromatic amines in acetic acid but in smaller yield than method A. Structures of the prepared compounds were elucidated by elemental analysis and spectral data as mass, IR, 1H-NMR and 13C-NMR spectroscopy. The antiviral efficacy of compounds 4a-l against SARS-CoV-2 was evaluated using the MTT assay. It was demonstrated that synthetic compounds 4c-e and 4h-j have a potent and selective inhibitory effect on SARS-CoV-2, a strain obtained from Egyptian patients. We utilized density-functional theory (DFT) analyses to deduce the molecular structures and topologies of the more energetic molecules. Molecular docking studies were performed against the SARS-CoV-2 main protease (PDB ID: 6Y84) and the SARS-CoV-2 Nsp9 RNA binding protein (PDB ID: 6W4B) to study the binding mechanism, non-bonding interactions, and binding affinity. Lastly, a hypothetical pharmacophore model was constructed by applying the Molecular Operating Environment (MOE) tool and eleven pharmaceuticals with proven antiviral activity.
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Affiliation(s)
- Doaa M Elsisi
- Department of Chemistry, Faculty of Science (Girl's Branch), Al-Azhar University, Yousef Abbas Street, Cairo, 11754, Nasr City, Egypt
| | - Ashraf M Mohamed
- Applied Organic Chemistry Department, National Research Centre, Dokki, 12622, Giza, Egypt.
| | - Mohamed G Seadawy
- Biological Prevention Department, Chemical Warfare, Cairo, 11351, Egypt
| | - Aya Ahmed
- Faculty of Nanotechnology for Postgraduate Studies, Cairo University, El-Sheikh Zayed, Cairo, 12588, Egypt
| | - Eman S Abou-Amra
- Department of Chemistry, Faculty of Science (Girl's Branch), Al-Azhar University, Yousef Abbas Street, Cairo, 11754, Nasr City, Egypt.
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2
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Ramesh R, Abinaya R. Glycerol Derived carbon-SO3H: A Green Recyclable Catalyst toward the Access of Functionalised 2,5-Dihydrofuran-3-Carboxylates. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2036772] [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]
Affiliation(s)
- Rathinam Ramesh
- Department of Chemistry, Sona College of Arts and Science, Salem, Tamil Nadu, India
| | - Rajendran Abinaya
- Department of Chemistry, Sona College of Arts and Science, Salem, Tamil Nadu, India
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3
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Rao TN, AlOmar SY, Ahmed F, Albalawi F, Ahmad N, Rao NK, Rao MVB, Cheedarala RK, Reddy GR, Naidu TM. Reusable Nano-Zirconia-Catalyzed Synthesis of Benzimidazoles and Their Antibacterial and Antifungal Activities. Molecules 2021; 26:4219. [PMID: 34299494 PMCID: PMC8304051 DOI: 10.3390/molecules26144219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 11/22/2022] Open
Abstract
In this article, a zirconia-based nano-catalyst (Nano-ZrO2), with intermolecular C-N bond formation for the synthesis of various benzimidazole-fused heterocycles in a concise method is reported. The robustness of this reaction is demonstrated by the synthesis of a series of benzimidazole drugs in a one-pot method. All synthesized materials were characterized using 1HNMR, 13CNMR, and LC-MS spectroscopy as well as microanalysis data. Furthermore, the synthesis of nano-ZrO2 was processed using a standard hydrothermal technique in pure form. The crystal structure of nano-ZrO2 and phase purity were studied, and the crystallite size was calculated from XRD analysis using the Debye-Scherrer equation. Furthermore, the antimicrobial activity of the synthesized benzimidazole drugs was evaluated in terms of Gram-positive, Gram-negative, and antifungal activity, and the results were satisfactory.
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Affiliation(s)
- Tentu Nageswara Rao
- Department of Chemistry, Krishna University, Machilipatnam 521001, Andhra Pradesh, India;
| | - Suliman Yousef AlOmar
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Faheem Ahmed
- Department of Physics, College of Science, King Faisal University, Hofuf 31982, Al-Ahsa, Saudi Arabia;
| | - Fadwa Albalawi
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Naushad Ahmad
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Nalla Krishna Rao
- Department of Organic Chemistry, Krishna University, Machilipatnam 521001, Andhra Pradesh, India; (N.K.R.); (M.V.B.R.)
| | - M. V. Basaveswara Rao
- Department of Organic Chemistry, Krishna University, Machilipatnam 521001, Andhra Pradesh, India; (N.K.R.); (M.V.B.R.)
| | - Ravi Kumar Cheedarala
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology, UNIST-Gil, Ulsan 44919, Korea
| | - G. Rajasekhar Reddy
- Department of Chemical Engineering, A.C Tech Campus, Anna University, Chennai 600025, India;
| | - Tentu Manohra Naidu
- Department of Nuclear Physics, Andhra University, Visakhapatnam 530003, Andhra Pradesh, India;
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4
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Rajni Swamy V, Krishnakumar R, Srinivasan N, Sivakumar S, Kumar RR. Coordinated compliance of chloro-methyl and bromo-methyl exchange rule in two dihydrofuran carbonitrile derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Amino [13]-macrodilactones: Synthesis, derivatization, and structural motifs. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152579] [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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Saha M, Das AR. Nanocrystalline ZnO: A Competent and Reusable Catalyst for the Preparation of Pharmacology Relevant Heterocycles in the Aqueous Medium. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107666200218122718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
:Nanoparticle catalyzed synthesis is a green and convenient method to achieve most of the chemical transformations in water or other green solvents. Nanoparticle ensures an easy isolation process of catalyst as well as products from the reaction mixture avoiding the hectic work up procedure. Zinc oxide is a biocompatible, environmentally benign and economically viable nanocatalyst with effectivity comparable to the other metal nanocatalyst employed in several reaction strategies. This review mainly focuses on the recent applications of zinc oxide in the synthesis of biologically important heterocyclic molecules under sustainable reaction conditions.:Application of zinc oxide in organic synthesis: Considering the achievable advantages of this nanocatalyst, presently several research groups are paying attention in anchoring zincoxide or its modified structure in several types of organic conversions e.g. multicomponent reactions, ligand-free coupling reactions, cycloaddition reaction, etc. The advantages and limitations of this nanocatalyst are also demonstrated. The present study aims to highlight the recent multifaceted applications of ZnO towards the synthesis of diverse heterocyclic motifs. Being a promising biocompatible nanoparticle, this catalyst has an important contribution in the fields of synthetic chemistry and medicinal chemistry.
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Affiliation(s)
- Moumita Saha
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
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Karamshahi Z, Ghorbani‐Vaghei R. Efficient synthesis of multiply substituted furans using BF@Propyl/dopamine/Pd as a green catalyst. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Zahra Karamshahi
- Department of Organic Chemistry, Faculty of ChemistryBu‐Ali Sina University Hamedan 6517838683 Iran
| | - Ramin Ghorbani‐Vaghei
- Department of Organic Chemistry, Faculty of ChemistryBu‐Ali Sina University Hamedan 6517838683 Iran
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Matouš P, Kadaník M, Timoracký M, Kuneš J, Maříková J, Růžička A, Kočovský P, Pour M. Nucleophile-assisted cyclization of β-propargylamino acrylic compounds catalyzed by gold( i): a rapid construction of multisubstituted tetrahydropyridines and their fused derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00653j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A variety of medicinally important multisubstituted tetrahydropyridines, 4-aryl piperidines, isoquinolines and fused pyridines were prepared in 1–3 step sequences via nucleophile-assisted Au(i)-catalyzed cyclizations of easily available azaenynes.
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Affiliation(s)
- Petr Matouš
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Michal Kadaník
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Marek Timoracký
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Jiří Kuneš
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Jana Maříková
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry
- University of Pardubice
- Faculty of Chemical Technology
- 532 10 Pardubice
- Czech Republic
| | - Pavel Kočovský
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Milan Pour
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
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Synthesis and Antimicrobial Activity of Methoxy- Substituted γ-Oxa-ε-lactones Derived from Flavanones. Molecules 2019; 24:molecules24224151. [PMID: 31744042 PMCID: PMC6891755 DOI: 10.3390/molecules24224151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 12/21/2022] Open
Abstract
Six γ-oxa-ε-lactones, 4-phenyl-3,4-dihydro-2H-1,5-benzodioxepin-2-one (5a) and its five derivatives with methoxy groups in different positions of A and B rings (5b–f), were synthesized from corresponding flavanones. Three of the obtained lactones (5b,c,f) have not been previously described in the literature. Structures of all synthesized compounds were confirmed by complete spectroscopic analysis with the assignments of signals on 1H and 13C-NMR spectra to the corresponding atoms. In most cases, lactones 5a–f exerted an inhibitory effect on the growth of selected pathogenic bacteria (Escherichia coli, Bacillus subtilis, and Staphylococcus aureus), filamentous fungi (Fusarium graminearum, Aspergillus niger, and Alternaria sp.), and yeast (Candida albicans). The broadest spectrum of activity was observed for unsubstituted lactone 5a, which was particularly active against filamentous fungi and yeast. Lactones with methoxy groups in the 3′ (5c) and 4′ (5d) position of B ring were more active towards bacteria whereas lactone substituted in the 7 position of the A ring (5e) exhibited higher antifungal activity. In most cases, the introduction of lactone function increased the activity of the compound compared to its flavonoid precursors, chalcones 3a–e, and flavanones 4a–f.
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10
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Insights into the chemistry and therapeutic potential of furanones: A versatile pharmacophore. Eur J Med Chem 2019; 171:66-92. [DOI: 10.1016/j.ejmech.2019.03.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/09/2019] [Accepted: 03/07/2019] [Indexed: 02/06/2023]
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Elagamy A, Shaw R, Panwar R, Shally, Ram VJ, Pratap R. Synthesis of Highly Functionalized Spirobutenolides via a Nitroalkane-Mediated Ring Contraction of 2-Oxobenzo[h]chromenes through Denitration. J Org Chem 2019; 84:1154-1161. [DOI: 10.1021/acs.joc.8b02257] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amr Elagamy
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Ranjay Shaw
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Rahul Panwar
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Shally
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
| | - Vishnu Ji Ram
- Department of Chemistry, University of Lucknow, Lucknow, Uttar Pradesh 226007, India
| | - Ramendra Pratap
- Department of Chemistry, University of Delhi, North Campus, Delhi 110007, India
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12
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Asheri O, Habibi-Khorassani SM, Shahraki M. A Study on the Kinetics and Mechanism of the One-Pot Formation of 3,4,5-Substituted Furan-2(5H)-Ones in the Presence of Lactic Acid: Effect of Different Substituents. PROGRESS IN REACTION KINETICS AND MECHANISM 2018. [DOI: 10.3184/146867818x15319903829218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The kinetics of the reaction between para-substituted anilines and dimethyl acetylenedicarboxylate (DMAD) with derivatives of benzaldehyde for the one-pot formation of 3,4,5-substituted furan-2(5 H)-ones in the presence of lactic acid as a catalyst have been studied spectrophotometrically at different temperatures. A mechanism involving four steps was proposed for the reactions, all of which followed second-order kinetics. The partial orders with respect to substituted aniline and DMAD were one and one and the reactions revealed zero-order kinetics for benzaldehyde and its derivatives. Changing of substituents on benzaldehyde left rates of reaction unaffected. However, various substituents on aniline showed that para electron-withdrawing groups decreased the rate of reaction. According to investigation of an isokinetic relationship, a common mechanism exists for all studied substituents and a general mechanism can be formulated. Kinetic values ( k and Ea) and associated activation parameters (Δ G‡, Δ S‡ and Δ H‡) of the reactions were determined.
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Affiliation(s)
- Osman Asheri
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, PO Box 98135-674, Zahedan, Iran
| | | | - Mehdi Shahraki
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, PO Box 98135-674, Zahedan, Iran
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13
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Microbial Hydrolysis of Racemic β-Aryl-γ-ethylidene-γ-lactones and Antifeedant Activity of the Products against Alphitobius diaperinus Panzer. Molecules 2018; 23:molecules23071516. [PMID: 29937482 PMCID: PMC6099502 DOI: 10.3390/molecules23071516] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 11/24/2022] Open
Abstract
Hydrolysis of (±)-β-aryl-γ-ethylidene-γ-lactones by fungal strain Aspergillus ochraceus AM370 afforded (−)-(S)-γ-ethylidene-γ-lactones 2a–d and (+)-(R)-γ-ketoacids 3a–d. Enantiomeric purity of the unreacted lactones was strictly related to a size of an aryl substituent at C-4 of γ-lactone ring, with the highest ee (77%) obtained for the (−)-(S)-γ-ethylidene-γ-lactone possessing unsubstituted benzene ring (2a) and the lowest one (15%) determined for the (−)-(S)-γ-ethylidene-γ-lactone with bulky 1,3-benzodioxole system (2d). Lactones 2a–d, both racemic and enantiomerically enriched, as well as products of their hydrolysis showed varying degrees of feeding deterrent activity against lesser mealworm, Alphitobius diaperinus Panzer, which depended on the structure of the compound and the developmental stage of the lesser mealworm. In the case of adults, more active were γ-lactones 2a–d, compared with ketoacids 3a–d. Only in the case of lactone 2a was the effect of configuration of stereogenic center on the activity found. Particularly strong deterrents against this stage (T > 180) were racemic and (−)-(S)-γ-ethylidene-γ-lactone with p-methoxysubstituted phenyl ring (2c).
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Ghashang M, Janghorban S, Roudbaraki SJ. Synthesis of 3,4,5-substituted furan-2(5H)-ones using Al-doped ZnO nanostructure. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3406-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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15
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Khan MM, Khan S, Saigal, Sahoo SC. Efficient and Eco-Friendly One-Pot Synthesis of Functionalized Furan-2-one, Pyrrol-2-one, and Tetrahydropyridine Using Lemon Juice as a Biodegradable Catalyst. ChemistrySelect 2018. [DOI: 10.1002/slct.201702933] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. Musawwer Khan
- Department of Chemistry; Aligarh Muslim University; Aligarh- 202002 India
| | - Sarfaraz Khan
- Department of Chemistry; Aligarh Muslim University; Aligarh- 202002 India
| | - Saigal
- Department of Chemistry; Aligarh Muslim University; Aligarh- 202002 India
| | - Subash C. Sahoo
- Department of Chemistry; Punjab University; Chandigarh- 160014 India
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Mohebat R, Yazdani-Elah-Abadi A, Heydari R, Maghsoodlou MT. Synthesis of Functionalized γ-Spiroiminolactones through a One-Pot Three-Component Reaction of Isocyanides, Acetylenic Esters, and 6H-Indeno[1,2-b]pyrido[3,2-e]pyrazin-6-one. Polycycl Aromat Compd 2017. [DOI: 10.1080/10406638.2017.1392327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Razieh Mohebat
- Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran
| | | | - Reza Heydari
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
| | - Malek-Taher Maghsoodlou
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
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Saha M, Das AR. Access of Diverse 2-Pyrrolidinone, 3,4,5-Substituted Furanone and 2-Oxo-dihydropyrroles Applying Graphene Oxide Nanosheet: Unraveling of Solvent Selectivity. ChemistrySelect 2017. [DOI: 10.1002/slct.201701989] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Moumita Saha
- Department of Chemistry; University of Calcutta; Kolkata-700009, India
| | - Asish R. Das
- Department of Chemistry; University of Calcutta; Kolkata-700009, India
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Ramesh R, Meignanasundar D, Lalitha A. An Organocatalytic Novel Synthesis of Polyfunctionalized Bis-2,5-dihydrofuran-3-carboxylates via Domino-MCR Strategy. ChemistrySelect 2017. [DOI: 10.1002/slct.201701786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Rathinam Ramesh
- Department of Chemistry; Periyar University, Periyar Palkalai Nagar; Salem-636011, Tamil Nadu India
| | - Durairaj Meignanasundar
- Department of Chemistry; Periyar University, Periyar Palkalai Nagar; Salem-636011, Tamil Nadu India
| | - Appaswami Lalitha
- Department of Chemistry; Periyar University, Periyar Palkalai Nagar; Salem-636011, Tamil Nadu India
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Talbi A, Arfaoui A, Bsaibess T, Lotfi Efrit M, Gaucher A, Prim D, M Rabet H. Selective synthesis of mono- and bis-butenolide α-aminomethyl adducts. Org Biomol Chem 2017; 15:3298-3303. [PMID: 28358156 DOI: 10.1039/c7ob00206h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective installation of α-methylamine residues at the butenolide core is described using α-bromomethylene-γ-butenolide and primary as well as secondary amines in methanol at 0 °C. The preparation of mono- and bis-butenolide α-adducts is described. Bis-γ-butenolide adducts as well as mono α-aminomethyl-γ-butenolides can be selectively obtained depending on the nature of the reacting primary amine. In contrast, the use of secondary amines allows two different pathways leading either to the expected amino derivatives or to the formation of a C-O bond.
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Affiliation(s)
- Arbia Talbi
- Université de Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Synthèse Organique Sélective et Hétérocyclique-Evaluation de l'Activité Biologique, 2092 Tunis, Tunisia
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Lal S, Chowdhury A, Namboothiri IN. Synthesis of annulated oxa-triquinanes and oxa-diquinanes via cascade Michael addition-intramolecular alkylation involving α-halodicyclopentadienones. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Kangani M, Hazeri N, Maghsoodlou MT. Synthesis of pyrrole and furan derivatives in the presence of lactic acid as a catalyst. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2015.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Zimmerling J, Tischler D, Großmann C, Schlömann M, Oelschlägel M. Characterization of Aldehyde Dehydrogenases Applying an Enzyme Assay with In Situ Formation of Phenylacetaldehydes. Appl Biochem Biotechnol 2017; 182:1095-1107. [PMID: 28062952 DOI: 10.1007/s12010-016-2384-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 12/27/2016] [Indexed: 11/29/2022]
Abstract
Herein, different dehydrogenases (DH) were characterized by applying a novel two-step enzyme assay. We focused on the NAD(P)+-dependent phenylacetaldehyde dehydrogenases because they produce industrially relevant phenylacetic acids, but they are not well studied due to limited substrate availability. The first assay step comprises a styrene oxide isomerase (440 U mg-1protein) which allows the production of pure phenylacetaldehydes (>70 mmol L-1) from commercially available styrene oxides. Thereafter, a DH of interest can be added to convert phenylacetaldehydes in a broad concentration range (0.05 to 1.25 mmol L-1). DH activity can be determined spectrophotometrically by following cofactor reduction or alternatively by RP-HPLC. This assay allowed the comparison of four aldehyde dehydrogenases and even of an alcohol dehydrogenase with respect to the production of phenylacetic acids (up to 8.4 U mg-1protein). FeaB derived from Escherichia coli K-12 was characterized in more detail, and for the first time, substituted phenylacetaldehydes had been converted. With this enzyme assay, characterization of dehydrogenases is possible although the substrates are not commercially available in sufficient quality but enzymatically producible. The advantages of this assay in comparison to the former one are discussed.
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Affiliation(s)
- Juliane Zimmerling
- Interdisciplinary Ecological Center, Environmental Microbiology Group, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany.
| | - Dirk Tischler
- Interdisciplinary Ecological Center, Environmental Microbiology Group, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany.
| | - Carolin Großmann
- Interdisciplinary Ecological Center, Environmental Microbiology Group, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Michael Schlömann
- Interdisciplinary Ecological Center, Environmental Microbiology Group, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Michel Oelschlägel
- Interdisciplinary Ecological Center, Environmental Microbiology Group, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
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23
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Mokhov VM, Butov GM, Saad KR. Chemical transformations of tetracyclo[3.3.1.13,7.01,3]decane (1,3-dehydroadamantane): II. Reaction of 1,3-dehydroadamantane with N,N-dialkylcarboxamides. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s107042801701002x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Skrobiszewski A, Gładkowski W, Maciejewska G, Wawrzeńczyk C. Chemoenzymatic Synthesis of trans-β-Aryl-δ-hydroxy-γ-lactones and Enzymatic Kinetic Resolution of Their Racemic Mixtures. Molecules 2016; 21:molecules21111552. [PMID: 27886108 PMCID: PMC6272857 DOI: 10.3390/molecules21111552] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/07/2016] [Accepted: 11/11/2016] [Indexed: 11/06/2022] Open
Abstract
Two novel and convenient routes to obtain enantiomerically enriched trans-β-aryl-δ-hydroxy-γ-lactones 5a–d with potential antifeedant and anticancer activity were developed. In the first method starting from corresponding enantiomers of γ,δ-unsaturated esters 4a–d derived from enzymatically resolved allyl alcohols 1a–d, both enantiomers of hydroxylactones 5a–d were synthesized with high enantiomeric excesses (73%–97%). Configurations of the stereogenic centers of the synthesized compounds were assigned based on the mechanism of acidic lactonization of esters 4a–d in the presence of m-chloroperbenzoic acid (m-CPBA). An alternative method for the production of optically active trans-β-aryl-δ-hydroxy-γ-lactones 5a–d was lipase-catalyzed kinetic resolution of their racemic mixtures by transesterification with vinyl propionate as the acyl donor. The most efficient enzyme in the screening procedure was lipase B from Candida antarctica. Its application on a preparative scale after 6 h afforded unreacted (+)-(4S,5R,6S)-hydroxylactones 5a–d and (+)-(4R,5S,6R)-propionates 6a–d, most of them with high enantiomeric excesses (92%–98%). Resolution of lactone 5d with bulky 1,3-benzodioxol ring provided products with significantly lower optical purity (ee = 89% and 84% for hydroxylactone 5d and propionate 6d, respectively). The elaborated methods give access to both enantiomers of trans-β-aryl-δ-hydroxy-γ-lactones 5a–d with the defined absolute configurations of stereogenic centers, which is crucial requirement for the investigations of relationship: spatial structure–biological activity.
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Affiliation(s)
- Andrzej Skrobiszewski
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, Wrocław 50-375, Poland.
| | - Witold Gładkowski
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, Wrocław 50-375, Poland.
| | - Gabriela Maciejewska
- Central Laboratory of the Instrumental Analysis, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, Wrocław 50-370, Poland.
| | - Czesław Wawrzeńczyk
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, Wrocław 50-375, Poland.
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25
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Habibi‐Khorassani SM, Shahraki M, Dehdab M. A Comparative Mechanistic and Kinetic Study of the Synthesis Reaction of 3, 4, 5‐Substituted Furan‐2(5H)‐ones: Solvent Effect. ChemistrySelect 2016. [DOI: 10.1002/slct.201600435] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Mehdi Shahraki
- Department of Chemistry, Faculty of Science University of Sistan and Baluchestan P O Box 98135-674 Zahedan Iran
| | - Maryam Dehdab
- Department of Chemistry, Faculty of Science University of Sistan and Baluchestan P O Box 98135-674 Zahedan Iran
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26
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Nallasivam JL, Fernandes RA. A Concise Synthesis of (−)-Incrustoporin and its Analogues by Pd-catalyzed Suzuki-Miyaura Coupling fromγ-Vinyl-γ-butyrolactone. ChemistrySelect 2016. [DOI: 10.1002/slct.201601379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jothi L. Nallasivam
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai-400 076, Maharashtra India
| | - Rodney A. Fernandes
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai-400 076, Maharashtra India
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27
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Mokhov VM, Burmistrov VV, Butov GM. Chemical transformations of tetracyclo[3.3.1.1.3,7.0.1,3]decane (1,3-dehydroadamantane): I. Reaction of 1,3-dehydroadamantane with carboxylic acids esters. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016080042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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28
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Ngwane AH, Panayides JL, Chouteau F, Macingwana L, Viljoen A, Baker B, Madikane E, de Kock C, Wiesner L, Chibale K, Parkinson CJ, Mmutlane EM, van Helden P, Wiid I. Design, synthesis, and In vitro antituberculosis activity of 2(5H)-Furanone derivatives. IUBMB Life 2016; 68:612-20. [PMID: 27346745 DOI: 10.1002/iub.1526] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 05/13/2016] [Accepted: 05/24/2016] [Indexed: 11/07/2022]
Abstract
A series of 2(5H)-furanone-based compounds were synthesized from commercially available mucohalic acids. From the first-generation compounds, three showed inhibitory activity (10 µg/mL) of at least 35% against Mycobacterium smegmatis mc(2) 155 growth (Bioscreen C system). In screening the active first-generation compounds for growth inhibition against Mycobacterium tuberculosis H37Rv, the most active compound was identified with a minimum inhibitory concentration (MIC99 ) of 8.07 µg/mL (15.8 µM) using BACTEC 460 system. No cross-resistance was observed with some current first-line anti-TB drugs, since it similarly inhibited the growth of multidrug resistant (MDR) clinical isolates. The compound showed a good selectivity for mycobacteria since it did not inhibit the growth of selected Gram-positive and Gram-negative bacteria. It also showed synergistic activity with rifampicin (RIF) and additive activity with isoniazid (INH) and ethambutol (EMB). Additional time-kill studies showed that the compound is bacteriostatic to mycobacteria, but cytotoxic to the Chinese Hamster Ovarian (CHO) cell line. From a second generation library, two compounds showed improved anti-TB activity against M. tuberculosis H37Rv and decreased CHO cell cytotoxicity. The compounds exhibited MIC values of 2.62 µg/mL (5.6 µM) and 3.07 µg/mL (5.6 µM) respectively. The improved cytotoxicity against CHO cell line of the two compounds ranged from IC50 = 38.24 µg/mL to IC50 = 45.58 µg/mL when compared to the most active first-generation compound (IC50 = 1.82 µg/mL). The two second generation leads with selectivity indices (SI) of 14.64 and 14.85 respectively, warrant further development as anti-TB drug candidates. © 2016 IUBMB Life, 68(8):612-620, 2016.
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Affiliation(s)
- Andile H Ngwane
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, SAMRC Centre for TB Research, DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Tygerberg, Cape Town, South Africa
| | | | - Franck Chouteau
- Department of Chemistry, University of Cape Town, Rondebosch, South Africa
| | - Lubabalo Macingwana
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, SAMRC Centre for TB Research, DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Tygerberg, Cape Town, South Africa
| | - Albertus Viljoen
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, SAMRC Centre for TB Research, DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Tygerberg, Cape Town, South Africa
| | - Bienyameen Baker
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, SAMRC Centre for TB Research, DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Tygerberg, Cape Town, South Africa
| | - Eliya Madikane
- Department of Clinical Laboratory Sciences, Division of Medical Microbiology, University of Cape Town, Rondebosch, South Africa
| | - Carmen de Kock
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, South Africa
| | - Lubbe Wiesner
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, South Africa
| | - Kelly Chibale
- Department of Chemistry, University of Cape Town, Rondebosch, South Africa
| | | | - Edwin M Mmutlane
- CSIR Biosciences, Pioneering Health Sciences, Pretoria, South Africa
| | - Paul van Helden
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, SAMRC Centre for TB Research, DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Tygerberg, Cape Town, South Africa
| | - Ian Wiid
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, SAMRC Centre for TB Research, DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Tygerberg, Cape Town, South Africa
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29
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Chiral δ-iodo-γ-lactones derived from cuminaldehyde, 2,5-dimethylbenzaldehyde and piperonal: chemoenzymatic synthesis and antiproliferative activity. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.02.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Preparation of 3,4,5-substituted furan-2(5H)-ones using HY Zeolite nano-powder as an efficient catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2476-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Ullah A, Zhang S, Bao M, Yamamoto Y, Almansour AI, Arumugam N, Kumar RS. Palladium-catalyzed propargylative and allenylative dearomatization of 2-(chloromethyl)thiophenes: remarkable effect of solvents. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.11.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Rajni Swamy V, Krishnakumar R, Sivakumar S, Srinivasan N, Ranjith Kumar R. Crystal structure of 5-benzoyl-2,4-di-phenyl-4,5-di-hydro-furan-3-carbo-nitrile. Acta Crystallogr E Crystallogr Commun 2015; 71:o663-4. [PMID: 26396892 PMCID: PMC4555400 DOI: 10.1107/s2056989015014887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 08/08/2015] [Indexed: 11/16/2022]
Abstract
In the title compound, C24H17NO2, the carbonyl O atom of the benzoyl group is cis with respect to the furanyl O atom, and the associated O-C-C-O torsion angle is 4.62 (19)°. The puckering of the dihydro-furan ring is close to twisted ((4) T 5), with parameters Q = 0.1856 (16) Å and φ = 313.5 (5)°. Mol-ecules are inter-connected via a C-H⋯N and a C-H⋯O hydrogen bond, leading to layers parallel to the (200) plane and characterized by R 4 (4)(28) and R 4 (4)(36) graph-set motifs. The furan O atom does not participate in inter-molecular hydrogen bonding. The crystal lattice encompasses a solvent-accessible void of 24.7 (8) Å(3).
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Affiliation(s)
- V. Rajni Swamy
- Department of Physics, Thiagarajar College, Madurai 625 009, Tamil Nadu, India
| | - R.V. Krishnakumar
- Department of Physics, Thiagarajar College, Madurai 625 009, Tamil Nadu, India
| | - S. Sivakumar
- School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - N. Srinivasan
- Department of Physics, Thiagarajar College, Madurai 625 009, Tamil Nadu, India
| | - R. Ranjith Kumar
- School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
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33
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Shahraki M, Habibi-Khorassani SM, Dehdab M. Effect of different substituents on the one-pot formation of 3,4,5-substituted furan-2(5H)-ones: a kinetics and mechanism study. RSC Adv 2015. [DOI: 10.1039/c5ra09717g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work focused on the effects of temperature and different para-substituted anilines on the activation parameters and kinetics of the synthesis reaction of 3,4,5-substituted furan-2(5H)-ones which were studied spectrally at different temperatures in formic acid.
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Affiliation(s)
- Mehdi Shahraki
- Department of Chemistry
- Faculty of Science
- University of Sistan and Baluchestan
- Zahedan
- Iran
| | | | - Maryam Dehdab
- Department of Chemistry
- Faculty of Science
- University of Sistan and Baluchestan
- Zahedan
- Iran
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34
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Gładkowski W, Skrobiszewski A, Mazur M, Siepka M, Białońska A. Convenient Chemoenzymatic Route to Optically Active β-Aryl-δ-iodo-γ-lactones and β-Aryl-γ-iodo-δ-lactones with the Defined Configurations of Stereogenic Centers. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403343] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Li Y, Palframan MJ, Pattenden G, Winne JM. A strategy towards the synthesis of plumarellide based on biosynthesis speculation, featuring a transannular 4+2 type cyclisation from a cembranoid furanoxonium ion intermediate. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.090] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Lu A, Wang J, Liu T, Han J, Li Y, Su M, Chen J, Zhang H, Wang L, Wang Q. Small changes result in large differences: discovery of (-)-incrustoporin derivatives as novel antiviral and antifungal agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:8799-8807. [PMID: 25116598 DOI: 10.1021/jf503060k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
On the basis of the structure of natural product (-)-incrustoporin (1), a series of lactone compounds 4a-i and 5a-i were designed and synthesized from nitroolefin. The antiviral and antifungal activities of these compounds were evaluated in vitro and in vivo. The small changes between 4 and 5 at the 3,4-position result in large differences in bioactivities. Compounds 4 exhibited significantly higher antiviral activity against tobacco mosaic virus (TMV) than dehydro compounds 5. However, the antifungal activity of 4 is relatively lower than that of 5. Compounds 4a, 4c, and 4i with excellent in vivo anti-TMV activity emerged as new antiviral lead compounds. Compounds 5d-g showed superiority over the commercial fungicides chlorothalonil and carbendazim against Cercospora arachidicola Hor at 50 mg kg(-1). The present study provides fundamental support for the development and optimization of (-)-incrustoporin derivatives as potential inhibitors of plant virus and pathogenic fungi.
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Affiliation(s)
- Aidang Lu
- School of Marine Science and Engineering and ‡School of Chemical Engineering, Hebei University of Technology , Tianjin 300130, China
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37
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Safaei-Ghomi J, Heidari-Baghbahadorani E, Shahbazi-Alavi H. SnO nanoparticles: a robust and reusable heterogeneous catalyst for the synthesis of 3,4,5-substituted furan-2(5H)-ones. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1281-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Salahi S, Maghsoodlou MT, Hazeri N, Movahedifar F, Doostmohammadi R, Lashkari M. Acidic ionic liquid N-methyl 2-pyrrolidonium hydrogen sulfate as an efficient catalyst for the one-pot multicomponent preparation of 3,4,5-substituted furan-2(5H)-ones. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1754-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Preparation of 3,4,5-substituted furan-2(5H)-ones using aluminum hydrogen sulfate as an efficient catalyst. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Shaabani A, Mahyari M, Hajishaabanha F, Mofakham H. Synthesis of fully functionalized iminolactones via an isocyanide-based three-component reaction. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0386-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Hama T, Ge S, Hartwig JF. Palladium-catalyzed α-arylation of zinc enolates of esters: reaction conditions and substrate scope. J Org Chem 2013; 78:8250-66. [PMID: 23931445 PMCID: PMC3800138 DOI: 10.1021/jo401476f] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The intermolecular α-arylation of esters by palladium-catalyzed coupling of aryl bromides with zinc enolates of esters is reported. Reactions of three different types of zinc enolates have been developed. α-Arylation of esters occurs in high yields with isolated Reformatsky reagents, with Reformatsky reagents generated from α-bromo esters and activated zinc, and with zinc enolates generated by quenching alkali metal enolates of esters with zinc chloride. The use of zinc enolates, instead of alkali metal enolates, greatly expands the scope of the arylation of esters. The reactions occur at room temperature or at 70 °C with bromoarenes containing cyano, nitro, ester, keto, fluoro, enolizable hydrogen, hydroxyl, or amino functionality and with bromopyridines. The scope of esters encompasses acyclic acetates, propionates, and isobutyrates, α-alkoxyesters, and lactones. The arylation of zinc enolates of esters was conducted with catalysts bearing the hindered pentaphenylferrocenyl di-tert-butylphosphine (Q-phos) or the highly reactive dimeric Pd(I) complex {[P(t-Bu)3]PdBr}2.
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Affiliation(s)
- Takuo Hama
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107; Department of Chemstry, University of Illinois, Urbana, 61801; and Department of Chemistry, University of California, Berkeley, CA, 94702, United States
| | - Shaozhong Ge
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107; Department of Chemstry, University of Illinois, Urbana, 61801; and Department of Chemistry, University of California, Berkeley, CA, 94702, United States
| | - John F. Hartwig
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107; Department of Chemstry, University of Illinois, Urbana, 61801; and Department of Chemistry, University of California, Berkeley, CA, 94702, United States
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42
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Acetic acid as an efficient catalyst for the one-pot preparation of 3,4,5-substituted furan-2(5H)-ones. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0922-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Mo JT, Hwang H, Lee PH. Palladium-Catalyzed Cross-Coupling Reaction and Gold-Catalyzed Cyclization for Preparation of Ethyl 2-Aryl 2,3-Alkadienoates and α-Aryl γ-Butenolides. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.8.2911] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Sarvary A, Shaabani S, Shaabani A, Ng SW. Synthesis of functionalized iminolactones via an isocyanide-based three-component reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.100] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Matoušová E, Růžička A, Kuneš J, Králová J, Pour M. TFP as a ligand in Au(i)-catalyzed dihydropyran synthesis. Unprecedented rearrangement of dihydropyrans into cyclopentenones. Chem Commun (Camb) 2011; 47:9390-2. [DOI: 10.1039/c1cc13525b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Ayyagari N, Jose D, Mobin SM, Namboothiri IN. Stereoselective construction of carbocycles and heterocycles via cascade reactions involving curcumins and nitroalkenes. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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47
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3,5-Disubstituted pyranone analogues of highly antifungally active furanones: Conversion of biological effect from antifungal to cytostatic. Bioorg Med Chem Lett 2010; 20:7358-60. [DOI: 10.1016/j.bmcl.2010.10.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 10/12/2010] [Accepted: 10/13/2010] [Indexed: 11/23/2022]
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48
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Gidlöf R, Johansson M, Sterner O. Tandem Pd-Catalyzed Carbonylation and Intramolecular Vinyl Allene Diels−Alder Reaction toward Galiellalactone Analogues. Org Lett 2010; 12:5100-3. [DOI: 10.1021/ol101989m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ritha Gidlöf
- Organic Chemistry, Lund University, P.O.B. 124, SE-221 00 Lund, Sweden
| | - Martin Johansson
- Organic Chemistry, Lund University, P.O.B. 124, SE-221 00 Lund, Sweden
| | - Olov Sterner
- Organic Chemistry, Lund University, P.O.B. 124, SE-221 00 Lund, Sweden
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49
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The first design and synthesis of [11C]MKC-1 ([11C]Ro 31-7453), a new potential PET cancer imaging agent. Nucl Med Biol 2010; 37:763-75. [DOI: 10.1016/j.nucmedbio.2010.04.186] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 04/23/2010] [Indexed: 11/17/2022]
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50
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Šenel P, Tichotová L, Votruba I, Buchta V, Špulák M, Kuneš J, Nobilis M, Krenk O, Pour M. Antifungal 3,5-disubstituted furanones: From 5-acyloxymethyl to 5-alkylidene derivatives. Bioorg Med Chem 2010; 18:1988-2000. [DOI: 10.1016/j.bmc.2010.01.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2009] [Revised: 01/11/2010] [Accepted: 01/13/2010] [Indexed: 10/19/2022]
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