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Zhang M, Zhang Z, Li Y. Mechanisms and Origins of Regio- and Stereoselectivities in NHC-Catalyzed [3 + 3] Annulation of α-Bromoenals and 5-Aminoisoxazoles: A DFT Study. J Org Chem 2024; 89:10748-10759. [PMID: 38996054 DOI: 10.1021/acs.joc.4c00980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Density functional theory (DFT) calculations were conducted to explore the mechanisms and origins of regio- and stereoselectivities underlying the [3 + 3] annulation reaction between α-bromoenals and 5-aminoisoxazoles with N-heterocyclic carbene (NHC) as the catalyst. The reaction occurs in nine steps: (1) nucleophilic addition of NHC to α-bromoenal, (2) Breslow intermediate formation through 1,2-proton transfer, (3) debromination, (4) α,β-unsaturated acyl azolium intermediate formation via 1,3-proton transfer, (5) addition of α,β-unsaturated acyl azolium intermediate to 5-aminoisoxazole, (6) deprotonation, (7) protonation, (8) ring closure, and (9) elimination of NHC. For the fifth step, 1,2-addition suggested in the experiment was not supported by our results. Instead, we found that Michael addition is energetically the most feasible pathway and the stereo-controlling step that preferentially provides the S-configuration product. DFT-computed results and experimental findings agree well. Analysis of distortion/interaction reveals that lower distortion energy leads to stability of the transition state corresponding to the S-configuration product. Global reactivity index analysis indicates that the behavior of the NHC catalyst differs significantly before and after the Breslow intermediate debromination. Before debromination, the nucleophilicity of α-bromoenal is enhanced by addition to NHC. However, after debromination, the α,β-unsaturated acyl azole generates and acts as an electrophilic reagent.
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Affiliation(s)
- Mingchao Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
| | - Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
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2
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Features of the Reaction of 5-aminoisoxazoles with diethyl 2-oxosuccinate. Synthesis of ethyl 6-hydroxy-isoxazolo[5,4-b]pyridine-4-carboxylates. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03114-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
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3
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Shuvalov VY, Chernenko SА, Shatsauskas AL, Samsonenko AL, Dmitriev MV, Fisyuk AS. Novel Approach to the Synthesis of 3-amino-4-arylpyridin-2(1 H)-one Derivatives. Chem Heterocycl Compd (N Y) 2021; 57:764-771. [PMID: 34511628 PMCID: PMC8421715 DOI: 10.1007/s10593-021-02980-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/05/2021] [Indexed: 12/02/2022]
Abstract
The reaction of 4-arylidene-2-phenyloxazol-5(4H)-ones with enamines of ethyl acetoacetate gave 4-aryl-2-methyl-6-oxo-5-[(phenylcarbonyl)amino]-1,4,5,6-tetrahydropyridine-3-carboxylic acid esters, which, when heated with phosphorus oxychloride, were converted into esters of 7-aryl-5-methyl-2-phenyloxazolo[5,4-b]pyridine-6-carboxylic acids. Alkaline hydrolysis of these compounds gave 4-aryl-2-methyl-6-oxo-5-[(phenylcarbonyl)amino]-1,6-dihydropyridine-3-carboxylic acid esters.
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Affiliation(s)
| | | | | | | | | | - Alexander S Fisyuk
- Omsk State Technical University, 11 Mira Ave, Omsk, 644050 Russia.,Dostoevsky Omsk State University, 55a Mira Ave, Omsk, 644077 Russia
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4
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Abdella AM, Abdelmoniem AM, Abdelhamid IA, Elwahy AHM. Synthesis of heterocyclic compounds via Michael and Hantzsch reactions. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3883] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Amna M. Abdella
- Chemistry Department, Faculty of ScienceCairo University Giza Egypt
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5
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Hamama WS, Gouda MA, Kamal El‐din HA, Zoorob HH. Highlights on the synthesis of novel phenothiazine‐based azines scaffold as antioxidant agents. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry, Faculty of ScienceMansoura University El‐Gomhoria Street Mansoura Egypt
| | - Moustafa A. Gouda
- Department of Chemistry, Faculty of ScienceMansoura University El‐Gomhoria Street Mansoura Egypt
- Department of Chemistry, Faculty of Science and Arts, UllaTaibah University Medina Saudi Arabia
| | - Hadwah A. Kamal El‐din
- Department of Chemistry, Faculty of ScienceMansoura University El‐Gomhoria Street Mansoura Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of ScienceMansoura University El‐Gomhoria Street Mansoura Egypt
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6
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Features of 3-amino-5-methylisoxazole in heterocyclizations involving pyruvic acids. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02422-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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7
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Murlykina MV, Morozova AD, Zviagin IM, Sakhno YI, Desenko SM, Chebanov VA. Aminoazole-Based Diversity-Oriented Synthesis of Heterocycles. Front Chem 2018; 6:527. [PMID: 30555815 PMCID: PMC6282055 DOI: 10.3389/fchem.2018.00527] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/11/2018] [Indexed: 02/02/2023] Open
Abstract
The comprehensive review contains the analysis of literature data concerning reactions of heterocyclization of aminoazoles and demonstrates the application of these types of transformations in diversity-oriented synthesis. The review is oriented to wide range of chemists working in the field of organic synthesis and both experimental and theoretical studies of nitrogen-containing heterocycles.
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Affiliation(s)
- Maryna V Murlykina
- Department of Organic and Bioorganic Chemistry, State Scientific Institution "Institute for Single Crystals", National Academy of Sciences of Ukraine (NAS), Kharkiv, Ukraine
| | - Alisa D Morozova
- Department of Organic and Bioorganic Chemistry, State Scientific Institution "Institute for Single Crystals", National Academy of Sciences of Ukraine (NAS), Kharkiv, Ukraine
| | - Ievgen M Zviagin
- Department of Organic and Bioorganic Chemistry, State Scientific Institution "Institute for Single Crystals", National Academy of Sciences of Ukraine (NAS), Kharkiv, Ukraine
| | - Yana I Sakhno
- Department of Organic and Bioorganic Chemistry, State Scientific Institution "Institute for Single Crystals", National Academy of Sciences of Ukraine (NAS), Kharkiv, Ukraine
| | - Sergey M Desenko
- Department of Organic and Bioorganic Chemistry, State Scientific Institution "Institute for Single Crystals", National Academy of Sciences of Ukraine (NAS), Kharkiv, Ukraine.,Chemistry Faculty, Karazin Kharkiv National University, Kharkiv, Ukraine
| | - Valentyn A Chebanov
- Department of Organic and Bioorganic Chemistry, State Scientific Institution "Institute for Single Crystals", National Academy of Sciences of Ukraine (NAS), Kharkiv, Ukraine.,Chemistry Faculty, Karazin Kharkiv National University, Kharkiv, Ukraine
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Hamama WS, Ibrahim ME, Zoorob HH. Synthesis, DFT Study, and Antitumor Activity of Some New Heterocyclic Compounds Incorporating Isoxazole Moiety. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura Egypt
| | - Mona E. Ibrahim
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura Egypt
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Morozova AD, Muravyova EA, Desenko SM, Musatov VI, Yedamenko DV, Chebanov VA. Heterocyclization Reactions of 3-methylisoxazol-5-amine with Pyruvic Acid Derivatives Using Classical and Non-classical Methods of Activation. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-1989-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Tkachenko VV, Chebanov VA. Reactions of 3(5)-Aminoisoxazoles Using Classical Methods of Activation, Microwave Irradiation, and Ultrasonication. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-1980-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Hamama WS, Gouda MA, Kamal El-din HA, Zoorob HH. Synthesis and Antioxidant Activity of Some New Binary Pyrazoles Containing Core Phenothiazine Moiety. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2716] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street 35516 Mansoura Egypt
| | - Moustafa A. Gouda
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street 35516 Mansoura Egypt
- Department of Chemistry, Faculty of Science and Arts, Ulla; Taibah University; Medina Kingdom of Saudi Arabia
| | - Hadwah A. Kamal El-din
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street 35516 Mansoura Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of Science; Mansoura University; El-Gomhoria Street 35516 Mansoura Egypt
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12
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Hamama WS, Ibrahim ME, Zoorob HH. Synthesis and Biological Evaluation of Some Novel Isoxazole Derivatives. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2589] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- W. S. Hamama
- Department of Chemistry, Faculty of Science; Mansoura University; 35516 Mansoura Egypt
| | - M. E. Ibrahim
- Department of Chemistry, Faculty of Science; Mansoura University; 35516 Mansoura Egypt
| | - H. H. Zoorob
- Department of Chemistry, Faculty of Science; Mansoura University; 35516 Mansoura Egypt
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Hamama WS, Ibrahim ME, Zoorob HH. Synthesis and In Vitro Antitumor Activity of New Isoxazolo[5,4-d]Pyrimidine Systems. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2521] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura Egypt
| | - Mona E. Ibrahim
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura Egypt
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Ibrahim ME, Hamama WS, Metwalli AE, Zoorob HH. Chemoselective Synthesis of Enamino-Coumarin Derivatives Identified as Potent Antitumor Agents. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mona E. Ibrahim
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura 35516 Egypt
| | - Wafaa S. Hamama
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura 35516 Egypt
| | - Asmaa E. Metwalli
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura 35516 Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry, Faculty of Science; Mansoura University; Mansoura 35516 Egypt
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Galenko AV, Khlebnikov AF, Novikov MS, Pakalnis VV, Rostovskii NV. Recent advances in isoxazole chemistry. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4503] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
The association of the isoxazole and dihydropyridine (DHP) ring systems fused at the 4'-isoxazolyl- to the 4-position of the DHP has produced a combination scaffold, the isoxazolyl-DHPs (IDHPs) with unique conformational characteristics. The IDHPs are useful in probing biological activity, as exemplified by our efforts in the fields of voltage gated calcium channel (VGCC) antagonists and inhibitors of the multi-drug resistance (MDR) transporter. A strategically placed methyl group produced a signifcant change at the VGCC, with (R)-(+)-1-phenyl-prop-2-yl (3.7 nM) > phenethyl (22.9 nM) > (S)-(-)-1-phenyl-prop-2-yl (210 nM), a eudismic ratio of 56.7. Branching at the C-5 of the isoxazole produced a 25% increase in MDR binding, and replacing the DHP C-3 ester with a functionalized amide also gave a dramatic increase in binding affinity. Opportunities for combined scaffolds - including examples containing IDHPs - are waiting to be discovered: because new biology is driven by new chemistry.
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17
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New synthetic approach to coumarino[4,3-b]pyridine systems and potential cytotoxic evaluation. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0859-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Affiliation(s)
- Wafaa S. Hamama
- a Chemistry Department, Faculty of Science , Mansoura University , Mansoura , Egypt
| | - Mona E. Ibrahim
- a Chemistry Department, Faculty of Science , Mansoura University , Mansoura , Egypt
| | - Hanafi H. Zoorob
- a Chemistry Department, Faculty of Science , Mansoura University , Mansoura , Egypt
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Synthesis, antioxidant, and antitumor evaluation of certain new N-substituted-2-amino-1,3,4-thiadiazoles. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0336-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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