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Xu Y, Sun J, Ke Z, Li Z, Tang W, Xu Y, Chen Z. Friedel-Crafts alkylation oxidative cyclization catalyzed by co-oxidation of SeO 2 and FeCl 3: a simple synthesis of benzo[ b]furan from acetophenone and anisole. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2113976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Yuyan Xu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Jie Sun
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Zhiwei Ke
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Ziwei Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Wei Tang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Yicheng Xu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Zhiwei Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China
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Cho YS, Kim ST, Ryu DH. Enantioselective Friedel-Crafts Alkylation of Furans with o-Quinone Methide Using a Chiral Oxazaborolidinium Ion Catalyst. Org Lett 2022; 24:1732-1736. [PMID: 35195002 DOI: 10.1021/acs.orglett.2c00404] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A chiral Lewis acid-catalyzed enantioselective Friedel-Crafts furan alkylation with in situ-generated o-quinone methides has been developed. In the presence of a chiral oxazaborolidinium ion catalyst, the reaction proceeded in high yield (up to 99%) with excellent enantioselectivity (up to >99% ee).
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Affiliation(s)
- Yoon Sung Cho
- Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon, Jangan, Suwon 16419, Korea
| | - Seung Tae Kim
- Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon, Jangan, Suwon 16419, Korea
| | - Do Hyun Ryu
- Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon, Jangan, Suwon 16419, Korea
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Chalikidi PN, Magkoev TT, Gutnov AV, Demidov OP, Uchuskin MG, Trushkov IV, Abaev VT. One-Step Synthesis of Triphenylphosphonium Salts from (Het)arylmethyl Alcohols. J Org Chem 2021; 86:9838-9846. [PMID: 34232646 DOI: 10.1021/acs.joc.1c00733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two approaches for the synthesis of substituted phosphonium salts from easily available benzyl alcohols and their heterocyclic analogs have been developed. The developed protocols are complementary: the direct mixing of alcohol, trimethylsilyl bromide, and triphenylphosphine in 1,4-dioxane followed by heating at 80 °C was found to be more efficient for acid-sensitive substrates, such as salicyl or furfuryl alcohols as well as secondary benzyl alcohols, while a one-pot procedure including sequential addition of trimethylsilyl bromide and triphenylphosphine gave higher yields for benzyl alcohols bearing electroneutral or electron-withdrawing substituents.
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Affiliation(s)
- Petrakis N Chalikidi
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation
| | - Taimuraz T Magkoev
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation
| | - Andrey V Gutnov
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation.,Chiroblock GmbH, Andresenstr. 1a, Wolfen, 06766, Germany
| | - Oleg P Demidov
- North Caucasus Federal University, Pushkin st. 1, Stavropol, 355009, Russian Federation
| | - Maxim G Uchuskin
- Perm State University, Bukireva st. 15, Perm, 614990, Russian Federation
| | - Igor V Trushkov
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow, 119334, Russian Federation.,D. Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samory Mashela st. 1, Moscow, 117997, Russian Federation
| | - Vladimir T Abaev
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation.,North Caucasus Federal University, Pushkin st. 1, Stavropol, 355009, Russian Federation
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Transformation of 3-(Furan-2-yl)-1,3-di(het)arylpropan-1-ones to Prop-2-en-1-ones via Oxidative Furan Dearomatization/2-Ene-1,4,7-triones Cyclization. Molecules 2021; 26:molecules26092637. [PMID: 33946475 PMCID: PMC8124928 DOI: 10.3390/molecules26092637] [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: 04/12/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 11/17/2022] Open
Abstract
The approach to 3-(furan-2-yl)-1,3-di(het)arylprop-2-en-1-ones based on the oxidative dearomatization of 3-(furan-2-yl)-1,3-di(het)arylpropan-1-ones followed by an unusual cyclization of the formed di(het)aryl-substituted 2-ene-1,4,7-triones has been developed. The cyclization step is related to the Paal-Knorr synthesis, but the furan ring formation is accompanied in this case by a formal shift of the double bond through the formation of a fully conjugated 4,7-hydroxy-2,4,6-trien-1-one system or its surrogate.
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Cruz JV, Giuliatti S, Alves LB, Silva RC, Ferreira EFB, Kimani NM, Silva CHTP, Souza JSND, Espejo-Román JM, Santos CBR. Identification of novel potential cyclooxygenase-2 inhibitors using ligand- and structure-based virtual screening approaches. J Biomol Struct Dyn 2021; 40:5386-5408. [PMID: 33427075 DOI: 10.1080/07391102.2020.1871413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Cyclooxygenase 2 (COX-2) is a well-established target for the design of anti-inflammatory intermediates. Celecoxib was selected as a template molecule to perform ligand-based virtual screening, i.e. to search for structures with similarity in shape and electrostatic potential, with a gradual increase in accuracy through the combined fitting of several steps using eight commercial databases. The molecules ZINC408709 and ZINC2090319 reproduced values within the limits established in an initial study of absorption and distribution in the body. No alert was fired for possible toxic groups when these molecules were subjected to toxicity prediction. Molecular docking results with these compounds showed a higher binding affinity in comparison to rofecoxib for the COX-2 target. Additionally, ZINC408709 and ZINC2090319 were predicted to be potentially biologically active. In in silico prediction of endocrine disruption potential, it was established that the molecule ZINC2090319 binds strongly to the target related to cardiovascular risk in a desirable way as a non-steroidal antagonist and ZINC408709 binds strongly to the target that is associated with the treatment of inflammatory pathologies and similar to celecoxib. Metabolites generated from these compounds are less likely to have side effects. Simulations were used to evaluate the interaction of compounds with COX-1 and COX-2 during 200 ns. Despite the differences, ZINC408709 molecule showed better stability for COX-2 during molecular dynamics simulation. In the calculations of free energy MM/PBSA, the molecule ZINC408709 ΔGbind value has a higher affinity to celecoxib and rofecoxib COX-2. This demonstrates that the selected substances can be considered as promising COX-2 inhibitors. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Josiane V Cruz
- Graduate Program in Pharmaceutical Innovation, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil.,Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
| | - Silvana Giuliatti
- Bioinformatics Group, Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Levy B Alves
- Bioinformatics Group, Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Raí C Silva
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brazil
| | - Elenilze F B Ferreira
- Graduate Program in Pharmaceutical Innovation, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil.,Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil.,Laboratory of Organic Chemistry and Biochemistry, University of the State of Amapá, Macapá, Brazil
| | - Njogu M Kimani
- Department of Physical Sciences, University of Embu, Embu, Kenya
| | - Carlos H T P Silva
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brazil.,Computational Laboratory of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - João S N de Souza
- Department of Chemistry, Federal University of Piaui, Teresina, Brazil
| | - José M Espejo-Román
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Biosanitary Institute of Granada (Ibs.GRANADA), University of Granada, Granada, Spain
| | - Cleydson B R Santos
- Graduate Program in Pharmaceutical Innovation, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil.,Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
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Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
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Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
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