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Li HY, Niu X, Zhang SS, Shen S, Meng QY, Yang XL. Intramolecular Dehydrogenative Photocyclization of N-Phenyl-1-naphthamides. Org Lett 2024; 26:5364-5369. [PMID: 38874571 DOI: 10.1021/acs.orglett.4c01805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Here, we explore a dehydrogenative 6π photocyclization method for N-substituted naphthalene carboxamides, which can be conducted in air. This method employs DMSO as both the reaction solvent and oxidant while also stabilizing the excited state of the substrate. Furthermore, the addition of photosensitizer enables the reaction to proceed under a 440-445 nm LED source via energy transfer. The proposed mechanism is initially validated through DFT calculations.
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Affiliation(s)
- Hao-Yuan Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Xiaoying Niu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Shan-Shan Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Shigang Shen
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Qing-Yuan Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiu-Long Yang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
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Mlakić M, Đurčević E, Odak I, Barić D, Juričević I, Šagud I, Burčul F, Lasić Z, Marinić Ž, Škorić I. Thieno-Thiazolostilbenes, Thienobenzo-Thiazoles, and Naphtho-Oxazoles: Computational Study and Cholinesterase Inhibitory Activity. Molecules 2023; 28:molecules28093781. [PMID: 37175190 PMCID: PMC10180155 DOI: 10.3390/molecules28093781] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Naphtho-triazoles and thienobenzo-triazoles have so far proven to be very potent inhibitors of the enzyme butyrylcholinesterase (BChE). Based on these results, in this work, new thienobenzo-thiazoles were designed and synthesized, and their potential inhibitory activity was tested and compared with their analogs, naphtho-oxazoles. The synthesis was carried out by photochemical cyclization of thieno-thiazolostilbenes obtained in the first reaction step. Several thienobenzo-thiazoles and naphtho-oxazoles have shown significant potential as BChE inhibitors, together with the phenolic thiazolostilbene being the most active of all tested compounds. These results are significant as BChE has been attracting growing attention due to its positive role in the treatment of Alzheimer's disease. Computational examination based on the DFT approach enabled the characterization of the geometry and electronic structure of the studied molecules. Furthermore, the molecular docking study, accompanied by additional optimization of complexes ligand-active site, offered insight into the structure and stabilizing interactions in the complexes of studied molecules and BChE.
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Affiliation(s)
- Milena Mlakić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, HR-10000 Zagreb, Croatia
| | - Ema Đurčević
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, HR-10000 Zagreb, Croatia
| | - Ilijana Odak
- Department of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, 88000 Mostar, Bosnia and Herzegovina
| | - Danijela Barić
- Group for Computational Life Sciences, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, HR-10000 Zagreb, Croatia
| | - Ines Juričević
- Department of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, 88000 Mostar, Bosnia and Herzegovina
| | - Ivana Šagud
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, HR-10000 Zagreb, Croatia
- Croatian Agency for Medicinal Products and Medical Devices, Ksaverska Cesta 4, HR-10000 Zagreb, Croatia
| | - Franko Burčul
- Department of Analytical Chemistry, Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, HR-21000 Split, Croatia
| | - Zlata Lasić
- Teva Api Analytical R&D, Pliva, Prilaz Baruna Filipovića 25, HR-10000 Zagreb, Croatia
| | - Željko Marinić
- NMR Center, Rudjer Bošković Institute, Bijenička Cesta 54, HR-10000 Zagreb, Croatia
| | - Irena Škorić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, HR-10000 Zagreb, Croatia
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Kumar S, Kajol K, Nayak P, Kumar A, Ramesh C. Synthesis of tetracyclic 4H-benzo[5,6]chromeno[3,4-d]oxazoles via palladium-catalyzed intramolecular direct heteroarylation. Chem Asian J 2023; 18:e202201151. [PMID: 36519340 DOI: 10.1002/asia.202201151] [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: 11/14/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
We report a palladium-catalyzed intramolecular direct heteroarylation of oxazole tethered β-naphthols to access corresponding tetracyclic 4H-benzo[5,6]chromeno[3,4-d]oxazoles. Various functional groups are well tolerated and furnished the desired products in good to excellent yields under the present reaction conditions. The scale-up reaction and synthetic utility of the resulting molecules have been demonstrated. Moreover, UV/vis absorption and fluorescence emission properties have been evaluated for these polyheterocyclic compounds.
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Affiliation(s)
- Sujeet Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, New Delhi, 110001, India
| | - Km Kajol
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India
| | - Prakash Nayak
- School of Chemical Sciences National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar, 752050, Odisha, India
| | - Amit Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, New Delhi, 110001, India
| | - Chintakunta Ramesh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, New Delhi, 110001, India
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Substituents affect the mechanism of photochemical E-Z isomerization of diarylethene triazoles via adiabatic singlet excited state pathway or via triplet excited state. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113567] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Lvov AG. Switching the Mallory Reaction to Synthesis of Naphthalenes, Benzannulated Heterocycles, and Their Derivatives. J Org Chem 2020; 85:8749-8759. [PMID: 32530622 DOI: 10.1021/acs.joc.0c00924] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This review analyzes the new life of a long-known reaction, the photocyclization of diarylethenes, which became a classical tool for the synthesis of phenanthrenes and their heterocyclic analogues (Mallory reaction). It has been shown in recent years that certain diarylethenes undergo photorearrangement to naphthalenes, benzannulated heterocycles, or related products with bicyclic unit. Herein, I analyze how the Mallory reaction path can be altered to obtain bicyclic rather than tricyclic products. The mechanistic aspects and scope of the reaction are discussed.
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Affiliation(s)
- Andrey G Lvov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky Prosp, 119991 Moscow, Russian Federation.,A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St, 664033 Irkutsk, Russia
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Synthesis of new alkoxy/alkylthiovinylated oxazoles using tosylmethyl isocyanide. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.05.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zheng X, Liu W, Zhang D. Recent Advances in the Synthesis of Oxazole-Based Molecules via van Leusen Oxazole Synthesis. Molecules 2020; 25:molecules25071594. [PMID: 32244317 PMCID: PMC7180750 DOI: 10.3390/molecules25071594] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/19/2020] [Accepted: 03/23/2020] [Indexed: 11/25/2022] Open
Abstract
Oxazole compounds, including one nitrogen atom and one oxygen atom in a five-membered heterocyclic ring, are present in various biological activities. Due to binding with a widespread spectrum of receptors and enzymes easily in biological systems through various non-covalent interactions, oxazole-based molecules are becoming a kind of significant heterocyclic nucleus, which have received attention from researchers globally, leading them to synthesize diverse oxazole derivatives. The van Leusen reaction, based on tosylmethylisocyanides (TosMICs), is one of the most appropriate strategies to prepare oxazole-based medicinal compounds. In this review, we summarize the recent advances of the synthesis of oxazole-containing molecules utilizing the van Leusen oxazole synthesis from 1972, aiming to look for potential oxazole-based medicinal compounds, which are valuable information for drug discovery and synthesis.
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Affiliation(s)
- Xunan Zheng
- College of Chemistry, Jilin University, Changchun 130012, China;
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Wei Liu
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang 110866, China
- Correspondence: (W.L.); (D.Z.); Tel.: +86-188-1775-2588 (W.L.); +86-431-8783-6471 (D.Z.)
| | - Dawei Zhang
- College of Chemistry, Jilin University, Changchun 130012, China;
- Correspondence: (W.L.); (D.Z.); Tel.: +86-188-1775-2588 (W.L.); +86-431-8783-6471 (D.Z.)
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Šagud I, Maček Hrvat N, Grgičević A, Čadež T, Hodak J, Dragojević M, Lasić K, Kovarik Z, Škorić I. Design, synthesis and cholinesterase inhibitory properties of new oxazole benzylamine derivatives. J Enzyme Inhib Med Chem 2020; 35:460-467. [PMID: 31899981 PMCID: PMC6968547 DOI: 10.1080/14756366.2019.1707197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) are primary targets in attenuating the symptoms of neurodegenerative diseases. Their inhibition results in elevated concentrations of the neurotransmitter acetylcholine which supports communication among nerve cells. It was previously shown for trans-4/5-arylethenyloxazole compounds to have moderate AChE and BChE inhibitory properties. A preliminary docking study showed that elongating oxazole molecules and adding a new NH group could make them more prone to bind to the active site of both enzymes. Therefore, new trans-amino-4-/5-arylethenyl-oxazoles were designed and synthesised by the Buchwald-Hartwig amination of a previously synthesised trans-chloro-arylethenyloxazole derivative. Additionally, naphthoxazole benzylamine photoproducts were obtained by efficient photochemical electrocyclization reaction. Novel compounds were tested as inhibitors of both AChE and BChE. All of the compounds exhibited binding preference for BChE over AChE, especially for trans-amino-4-/5-arylethenyl-oxazole derivatives which inhibited BChE potently (IC50 in µM range) and AChE poorly (IC50≫100 µM). Therefore, due to the selectivity of all of the tested compounds for binding to BChE, these compounds could be applied for further development of cholinesterase selective inhibitors.HIGHLIGHTS Series of oxazole benzylamines were designed and synthesised The tested compounds showed binding selectivity for BChE Naphthoxazoles were more potent AChE inhibitors
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Affiliation(s)
- Ivana Šagud
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
| | - Nikolina Maček Hrvat
- Institute for Medical Research and Occupational Health, Biochemistry and Analytic Organic Chemistry Unit, Zagreb, Croatia
| | - Ana Grgičević
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
| | - Tena Čadež
- Institute for Medical Research and Occupational Health, Biochemistry and Analytic Organic Chemistry Unit, Zagreb, Croatia
| | - Josipa Hodak
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
| | - Milena Dragojević
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
| | | | - Zrinka Kovarik
- Institute for Medical Research and Occupational Health, Biochemistry and Analytic Organic Chemistry Unit, Zagreb, Croatia
| | - Irena Škorić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
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