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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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Fisyuk AS, Samsonenko AL, Kostyuchenko AS, Zheleznova TY, Shuvalov VY, Vlasov IS. Synthesis of New Fused 4H-Thieno[3,2-b]pyrrole Derivatives via Decomposition of Methyl 4-Azido-5-arylthiophene-2-carboxylates. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1799-9339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractThis article is focused on the development of practical approaches to the synthesis of 4-azido-5-arylthiophene-2-carboxylates and 4-amino-5-arylthiophene-2-carboxylates using the Fiesselmann reaction. The photochemical and thermal (including microwave-assisted) decomposition of 4-azido-5-arylthiophene-2-carboxylates have been studied in order to synthesize fused 4H-thieno[3,2-b]pyrrole derivatives. The proposed approaches allow to obtain functionally substituted heteroacenes, which are of interest as building blocks for organic semiconductors.
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Affiliation(s)
- Alexander S. Fisyuk
- Laboratory of New Organic Materials, Omsk State Technical University
- Department of Organic Chemistry, Omsk F. M. Dostoevsky State University
| | - Anna L. Samsonenko
- Laboratory of New Organic Materials, Omsk State Technical University
- Faculty of Chemistry, Silesian University of Technology
| | - Anastasia S. Kostyuchenko
- Laboratory of New Organic Materials, Omsk State Technical University
- Department of Organic Chemistry, Omsk F. M. Dostoevsky State University
| | - Tatyana Yu. Zheleznova
- Laboratory of New Organic Materials, Omsk State Technical University
- Department of Organic Chemistry, Omsk F. M. Dostoevsky State University
| | - Vladislav Yu. Shuvalov
- Laboratory of New Organic Materials, Omsk State Technical University
- Department of Organic Chemistry, Omsk F. M. Dostoevsky State University
| | - Igor S. Vlasov
- Department of Organic Chemistry, Omsk F. M. Dostoevsky State University
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Masih PJ, Kesharwani T, Rodriguez E, Vertudez MA, Motakhaveri ML, Le TK, Tran MKT, Cloyd MR, Kornman CT, Phillips AM. Synthesis and Evaluation of 3-Halobenzo[ b]thiophenes as Potential Antibacterial and Antifungal Agents. Pharmaceuticals (Basel) 2021; 15:39. [PMID: 35056096 PMCID: PMC8780876 DOI: 10.3390/ph15010039] [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: 11/30/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 11/24/2022] Open
Abstract
The global health concern of antimicrobial resistance has harnessed research interest to find new classes of antibiotics to combat disease-causing pathogens. In our studies, 3-halobenzo[b]thiophene derivatives were synthesized and tested for their antimicrobial activities using the broth microdilution susceptibility method. The 3-halo substituted benzo[b]thiophenes were synthesized starting from 2-alkynyl thioanisoles using a convenient electrophilic cyclization methodology that utilizes sodium halides as the source of electrophilic halogens when reacted along with copper(II) sulfate. This environmentally benign methodology is facile, uses ethanol as the solvent, and results in 3-halo substituted benzo[b]thiophene structures in very high yields. The cyclohexanol-substituted 3-chloro and 3-bromobenzo[b]thiophenes resulted in a low MIC of 16 µg/mL against Gram-positive bacteria and yeast. Additionally, in silico absorption, distribution, metabolism, and excretion (ADME) properties of the compounds were determined. The compounds with the lowest MIC values showed excellent drug-like properties with no violations to Lipinski, Veber, and Muegge filters. The time-kill curve was obtained for cyclohexanol-substituted 3-chlorobenzo[b]thiophenes against Staphylococcus aureus, which showed fast bactericidal activity at MIC.
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Affiliation(s)
- Prerna J Masih
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Tanay Kesharwani
- Department of Chemistry, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Elivet Rodriguez
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Mia A Vertudez
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Mina L Motakhaveri
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Terelan K Le
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Minh Kieu T Tran
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Matthew R Cloyd
- Department of Chemistry, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Cory T Kornman
- Department of Chemistry, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Aimee M Phillips
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
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