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Chau TK, Ho NT, Ho TH, Nguyen AT, Nguyen KD, Phan NTS, Le HV, Nguyen TT. Synthesis of 2-benzyl benzoxazoles and benzothiazoles via elemental sulfur promoted cyclization of styrenes with 2-nitrophenols and N, N-dialkyl-3-nitroanilines. Org Biomol Chem 2024; 22:1234-1244. [PMID: 38240351 DOI: 10.1039/d3ob01775c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Herein we report a method for affording 2-benzyl benzoxazoles from substituted styrenes and 2-nitrophenols. The success of this method relies on the use of simple reagents, namely elemental sulfur and DABCO. A combination of identical reagents was utilized for the annulation of styrenes with N,N-dialkyl-3-nitroanilines to afford 2-benzyl benzothiazoles. Overall, benzoxazoles and benzothiazoles bearing useful functionalities such as halogens, amines, and heterocyclic groups were isolated in moderate to good yields. Our methods are a rare example of divergent transformations of substituted nitroarenes towards 2-benzyl benzoxazoles and benzothiazoles.
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Affiliation(s)
- Truong K Chau
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Nguyen T Ho
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Tuan H Ho
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Anh T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Khoa D Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Nam T S Phan
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Ha V Le
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
| | - Tung T Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City, Vietnam
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2
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Deplano A, Karlsson J, Moraca F, Svensson M, Cristiano C, Morgillo CM, Fowler CJ, Russo R, Catalanotti B, Onnis V. Design, synthesis and in vitro and in vivo biological evaluation of flurbiprofen amides as new fatty acid amide hydrolase/cyclooxygenase-2 dual inhibitory potential analgesic agents. J Enzyme Inhib Med Chem 2021; 36:940-953. [PMID: 33896320 PMCID: PMC8079065 DOI: 10.1080/14756366.2021.1875459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Compounds combining dual inhibitory action against FAAH and cyclooxygenase (COX) may be potentially useful analgesics. Here, we describe a novel flurbiprofen analogue, N-(3-bromopyridin-2-yl)-2-(2-fluoro-(1,1'-biphenyl)-4-yl)propanamide (Flu-AM4). The compound is a competitive, reversible inhibitor of FAAH with a Ki value of 13 nM and which inhibits COX activity in a substrate-selective manner. Molecular modelling suggested that Flu-AM4 optimally fits a hydrophobic pocket in the ACB region of FAAH, and binds to COX-2 similarly to flurbiprofen. In vivo studies indicated that at a dose of 10 mg/kg, Flu-AM4 was active in models of prolonged (formalin) and neuropathic (chronic constriction injury) pain and reduced the spinal expression of iNOS, COX-2, and NFκB in the neuropathic model. Thus, the present study identifies Flu-AM4 as a dual-action FAAH/substrate-selective COX inhibitor with anti-inflammatory and analgesic activity in animal pain models. These findings underscore the potential usefulness of such dual-action compounds.
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Affiliation(s)
- Alessandro Deplano
- Unit of Pharmaceutical, Pharmacological and Nutraceutical Sciences, Department of Life and Environmental Sciences, University of Cagliari, Monserrato, Italy
| | - Jessica Karlsson
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
| | - Federica Moraca
- Department of Pharmacy, University of Naples Federico II, Naples, Italy.,Net4Science srl, University "Magna Graecia", Catanzaro, Italy
| | - Mona Svensson
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
| | - Claudia Cristiano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Carmine Marco Morgillo
- Drug Discovery Unit, Wellcome Centre for Anti-Infectives Research, School of Life Sciences, University of Dundee, Dundee, UK
| | | | - Roberto Russo
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Bruno Catalanotti
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Valentina Onnis
- Unit of Pharmaceutical, Pharmacological and Nutraceutical Sciences, Department of Life and Environmental Sciences, University of Cagliari, Monserrato, Italy
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3
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Trost BM, Gnanamani E, Tracy JS, Kalnmals CA. Zn-ProPhenol Catalyzed Enantio- and Diastereoselective Direct Vinylogous Mannich Reactions between α,β- and β,γ-Butenolides and Aldimines. J Am Chem Soc 2017; 139:18198-18201. [PMID: 29198100 DOI: 10.1021/jacs.7b11361] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a Zn-ProPhenol catalyzed reaction between butenolides and imines to obtain tetrasubstituted vinylogous Mannich products in good yield and diastereoselectivity with excellent enantioselectivity (97 to >99.5% ee). Notably, both α,β- and β,γ-butenolides can be utilized as nucleophiles in this transformation. The imine partner bears the synthetically versatile N-Cbz group, avoiding the use of the specialized aryl directing groups previously required in related work. Additionally, the reaction can be performed on gram scale with reduced catalyst loading as low as 2 mol %. The functional group-rich products can be further elaborated using a variety of methods.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Elumalai Gnanamani
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Jacob S Tracy
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Christopher A Kalnmals
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
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4
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Chang W, Sun Y, Huang Y. One-pot green synthesis of benzoxazole derivatives through molecular sieve-catalyzed oxidative cyclization reaction. HETEROATOM CHEMISTRY 2017. [DOI: 10.1002/hc.21360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Weichieh Chang
- Department of Applied Chemistry; National University of Kaohsiung; Kaohsiung Taiwan
| | - Yukai Sun
- Department of Chemistry; National Tsing Hua University; Hsinchu Taiwan
| | - Yungtzung Huang
- Department of Applied Chemistry; National University of Kaohsiung; Kaohsiung Taiwan
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5
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Jarrige L, Carboni A, Dagousset G, Levitre G, Magnier E, Masson G. Photoredox-Catalyzed Three-Component Tandem Process: An Assembly of Complex Trifluoromethylated Phthalans and Isoindolines. Org Lett 2016; 18:2906-9. [PMID: 27276522 DOI: 10.1021/acs.orglett.6b01257] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel photoredox-mediated tandem three-component process afforded a wide variety of CF3-containing phthalans and isoindolines in respectable yields and with moderate to excellent diastereoselectivity.
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Affiliation(s)
- Lucie Jarrige
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , 91198 Gif-sur-Yvette Cedex, France
| | - Aude Carboni
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , 91198 Gif-sur-Yvette Cedex, France
| | - Guillaume Dagousset
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , 91198 Gif-sur-Yvette Cedex, France.,Institut Lavoisier de Versailles, UMR 8180, Université de Versailles-Saint-Quentin , 78035 Versailles Cedex, France
| | - Guillaume Levitre
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , 91198 Gif-sur-Yvette Cedex, France
| | - Emmanuel Magnier
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles-Saint-Quentin , 78035 Versailles Cedex, France
| | - Géraldine Masson
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , 91198 Gif-sur-Yvette Cedex, France
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Interaction of the N-(3-Methylpyridin-2-yl)amide Derivatives of Flurbiprofen and Ibuprofen with FAAH: Enantiomeric Selectivity and Binding Mode. PLoS One 2015; 10:e0142711. [PMID: 26565710 PMCID: PMC4643906 DOI: 10.1371/journal.pone.0142711] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/26/2015] [Indexed: 01/12/2023] Open
Abstract
Background Combined fatty acid amide hydrolase (FAAH) and cyclooxygenase (COX) inhibition is a promising approach for pain-relief. The Flu-AM1 and Ibu-AM5 derivatives of flurbiprofen and ibuprofen retain similar COX-inhibitory properties and are more potent inhibitors of FAAH than the parent compounds. However, little is known as to the nature of their interaction with FAAH, or to the importance of their chirality. This has been explored here. Methodology/Principal Findings FAAH inhibitory activity was measured in rat brain homogenates and in lysates expressing either wild-type or FAAHT488A-mutated enzyme. Molecular modelling was undertaken using both docking and molecular dynamics. The (R)- and (S)-enantiomers of Flu-AM1 inhibited rat FAAH with similar potencies (IC50 values of 0.74 and 0.99 μM, respectively), whereas the (S)-enantiomer of Ibu-AM5 (IC50 0.59 μM) was more potent than the (R)-enantiomer (IC50 5.7 μM). Multiple inhibition experiments indicated that both (R)-Flu-AM1 and (S)-Ibu-AM5 inhibited FAAH in a manner mutually exclusive to carprofen. Computational studies indicated that the binding site for the Flu-AM1 and Ibu-AM5 enantiomers was located between the acyl chain binding channel and the membrane access channel, in a site overlapping the carprofen binding site, and showed a binding mode in line with that proposed for carprofen and other non-covalent ligands. The potency of (R)-Flu-AM1 was lower towards lysates expressing FAAH mutated at the proposed carprofen binding area than in lysates expressing wild-type FAAH. Conclusions/Significance The study provides kinetic and structural evidence that the enantiomers of Flu-AM1 and Ibu-AM5 bind in the substrate channel of FAAH. This information will be useful in aiding the design of novel dual-action FAAH: COX inhibitors.
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Singh S, Veeraswamy G, Bhattarai D, Goo JI, Lee K, Choi Y. Recent Advances in the Development of Pharmacologically Active Compounds that Contain a Benzoxazole Scaffold. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500235] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sarbjit Singh
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Gajulapati Veeraswamy
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
| | - Deepak Bhattarai
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Ja-Il Goo
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
| | - Kyeong Lee
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Yongseok Choi
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
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8
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Naganaboina RT, Peddinti RK. Facile one-pot synthesis of (benzoxazol-2ʹ-yl)bicyclo[2.2.2]octen-2-one derivatives. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Suzuki C, Morimoto K, Hirano K, Satoh T, Miura M. Ruthenium‐ and Rhodium‐Catalyzed Dehydrogenative
ortho
‐Alkenylation of Benzylamines
via
Free Amino Group Directed CH Bond Cleavage. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400088] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chiharu Suzuki
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
| | - Keisuke Morimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
| | - Koji Hirano
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
| | - Tetsuya Satoh
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
- JST, ACT‐C, 4‐1‐8 Honcho, Kawaguchi, Saitama 332‐0012, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
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Khalafi-Nezhad A, Panahi F, Yousefi R, Sarrafi S, Gholamalipour Y. Magnetic nanoparticles-supported tungstosilicic acid: as an efficient magnetically separable solid acid for the synthesis of benzoazoles in water. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-013-0400-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Caruano J, Feledziak M, Labar G, Michaux C, Perpète EA, Muccioli GG, Robiette R, Marchand-Brynaert J. (S)-1-(Pent-4'-enoyl)-4-(hydroxymethyl)-azetidin-2-one derivatives as inhibitors of human fatty acid amide hydrolase (hFAAH): synthesis, biological evaluation and molecular modelling. J Enzyme Inhib Med Chem 2013; 29:654-62. [PMID: 24102523 DOI: 10.3109/14756366.2013.837900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A series of lipophilic ester derivatives (2a-g) of (S)-1-(pent-4'-enoyl)-4-(hydroxymethyl)-azetidin-2-one has been synthesised in three steps from (S)-4-(benzyloxycarbonyl)-azetidin-2-one and evaluated as novel, reversible, β-lactamic inhibitors of endocannabinoid-degrading enzymes (human fatty acid amide hydrolase (hFAAH) and monoacylglycerol lipase (hMAGL)). The compounds showed IC50 values in the micromolar range and selectivity for hFAAH versus hMAGL. The unexpected 1000-fold decrease in activity of 2a comparatively to the known regioisomeric structure 1a (i.e. lipophilic chains placed on N1 and C3 positions of the β-lactam core) could be explained on the basis of docking studies into a revisited model of hFAAH active site, considering one or two water molecules in interaction with the catalytic triad.
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Affiliation(s)
- Joséphine Caruano
- Institut de la Matière Condensée et des Nanosciences (IMCN), Université catholique de Louvain (UCL) , Louvain-la-Neuve , Belgium
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12
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Guntreddi T, Allam BK, Singh KN. Utilization of carbon disulfide as a powerful building block for the synthesis of 2-aminobenzoxazoles. RSC Adv 2013. [DOI: 10.1039/c3ra41189c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Gowlugari S, DeFalco J, Nguyen MT, Kaub C, Chi C, Duncton MAJ, Emerling DE, Kelly MG, Kincaid J, Vincent F. Discovery of potent, non-carbonyl inhibitors of fatty acid amide hydrolase (FAAH). MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20146a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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