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Almatari AS, Saeed A, Abdel-Ghani GE, Abdullah MMS, Al-Lohedan HA, Abdel-Latif E, El-Demerdash A. SYNTHESIS OF SOME NOVEL THIOPHENE ANALOGUES AS POTENTIAL ANTICANCER AGENTS. Chem Biodivers 2024:e202400313. [PMID: 38467571 DOI: 10.1002/cbdv.202400313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/08/2024] [Accepted: 03/08/2024] [Indexed: 03/13/2024]
Abstract
The aim of this study involves the synthesis novel thiophene analogues that can be used as anticancer medications through a strategic multicomponent reaction connecting ethyl 4-chloroacetoacetate (1), phenyl isothiocyanate, and a series of active methylene reagents, including ethyl acetoacetate (2), malononitrile, ethyl cyanoacetate, cyanoacetamide 6a-c, N-phenyl cyanoacetamide derivatives 13a-c, and acetoacetanilide derivatives 18. This reaction was facilitated by dry dimethylformamide with a catalytic quantity of K2CO3. The resultant thiophene derivatives were identified as 4, 8a-b, 9, 12a-d, 15a-c, and 20a-b. Further reaction of compound 4 with hydrazine hydrate yielded derivative 5, respectively. When compound 1 was refluxed with ethyl 3-mercapto-3-(phenylamino)-2-(p-substituted phenyldiazenyl)acrylate 10a-e in the presence of sodium ethoxide, it produced thiophene derivatives 12a-d. Comprehensive structural elucidation of these newly synthesized thiophene-analogues was accomplished via elemental and spectral analysis data. Furthermore, the study delves into the cytotoxicity of the newly synthesized thiophenes was evaluated using the HepG2, A2780, and A2780CP cell lines. The amino-thiophene derivative 15b exhibited an increased growth inhibition of A2780, and A2780CP with IC50 values 12±0.17, and 10±0.15 µM, respectively compared to Sorafenib with IC50 values 7.5±0.54 and 9.4±0.14. This research opens new avenues for developing thiophene-based anticancer agents.
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Affiliation(s)
- Altaf S Almatari
- Mansoura University Faculty of Science, Chemistry, AL-Mansoura street, Mansoura, 35516, Mansoura, EGYPT
| | - Ali Saeed
- Mansoura University, Chemistry, AL-Mansoura street, 35516, Mansoura, EGYPT
| | - Ghada E Abdel-Ghani
- Mansoura University Faculty of Science, Chemistry, AL-Mansoura street, Mansoura, 35516, Mansoura, EGYPT
| | | | | | - Ehab Abdel-Latif
- Mansoura University Faculty of Science, Chemistry, al-mansoura, al-mansoura, EGYPT
| | - Amr El-Demerdash
- Norwich BioScience Institutes, Biological, Norwich, Norwich, UNITED KINGDOM
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Hikmawanti NPE, Saputri FC, Yanuar A, Jantan I, Ningrum RA, Mun'im A. Insights into the anti-infective effects of Pluchea indica (L.) Less and its bioactive metabolites against various bacteria, fungi, viruses, and parasites. J Ethnopharmacol 2024; 320:117387. [PMID: 37944874 DOI: 10.1016/j.jep.2023.117387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/12/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pluchea indica (L.) Less (family Asteraceae) is popularly consumed as a medicinal vegetable and used in ethnomedicine to treat various diseases including gastrointestinal problems such as dysentery and leucorrhoea, which are due to bacterial, fungal or parasitic infections. There have been numerous studies on the antimicrobial effects of the plant due to these ethnomedicine use. AIM OF THIS REVIEW This review is comprehensively discussed the information on the anti-infective properties of P. indica and its secondary metabolites, and highlight the potential of the plant as a new source of anti-infective agents. MATERIALS AND METHODS Scientific databases such as Scopus, Google Scholar, ScienceDirect, PubMed, Wiley Online Library, and ACS Publications were used to gather the relevant information on the ability of P. indica to fight infections, with the leaves and roots receiving most of the attention. RESULTS Anti-bacterial, anti-mycobacterial, anti-malarial, and anti-viral activities have been the most exploited. Most studies were carried out on the crude extracts of the plant and in most studies the bioactive extracts were not standardized or chemically characterized. Several studies have reported the anti-infective activity of several bioactive components of P. indica including caffeoylquinic acids, terpenoid glycosides, thiophenes, and kaempferol. CONCLUSIONS The strong anti-infective effect and underlying mechanisms of the compounds provide insights into the potential of P. indica as a source of new leads for the development of anti-infective agents for use in food and pharmaceutical industries.
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Affiliation(s)
- Ni Putu Ermi Hikmawanti
- Graduate Program of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Indonesia, Cluster of Health Sciences Building, Depok, 16424, West Java, Indonesia; Department of Pharmaceutical Biology, Faculty of Pharmacy and Sciences, Universitas Muhammadiyah Prof. DR. HAMKA, East Jakarta, 13460, DKI Jakarta, Indonesia; National Metabolomics Collaborative Research Center, Faculty of Pharmacy, Universitas Indonesia, Depok, West Java, 16424, Indonesia.
| | - Fadlina Chany Saputri
- Department of Pharmacology-Toxicology, Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, West Java, Indonesia; National Metabolomics Collaborative Research Center, Faculty of Pharmacy, Universitas Indonesia, Depok, West Java, 16424, Indonesia.
| | - Arry Yanuar
- Department of Biomedical Computation-Drug Design, Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, West Java, Indonesia; National Metabolomics Collaborative Research Center, Faculty of Pharmacy, Universitas Indonesia, Depok, West Java, 16424, Indonesia.
| | - Ibrahim Jantan
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, UKM Bangi, 43600, Selangor, Malaysia.
| | - Ratih Asmana Ningrum
- Research Center for Genetic Engineering, National Research and Innovation Agency (BRIN), Raya Bogor Street KM.46, Cibinong, Bogor, West Java, 16911, Indonesia; National Metabolomics Collaborative Research Center, Faculty of Pharmacy, Universitas Indonesia, Depok, West Java, 16424, Indonesia.
| | - Abdul Mun'im
- Department of Pharmacognosy-Phytochemistry, Faculty of Pharmacy, Universitas Indonesia, Cluster of Health Sciences Building, Depok, 16424, West Java, Indonesia; National Metabolomics Collaborative Research Center, Faculty of Pharmacy, Universitas Indonesia, Depok, West Java, 16424, Indonesia.
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Thlaijeh S, Lepot K, Carpentier Y, Riboulleau A, Duca D, Vojkovic M, Tewari A, Sarazin J, Bon M, Nuns N, Tribovillard N, Focsa C. Characterization of Sulfur-Rich Microbial Organic Matter in Jurassic Carbonates Using Laser-Assisted Mass Spectrometry. Astrobiology 2024; 24:61-83. [PMID: 38109217 DOI: 10.1089/ast.2023.0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Laser desorption-ionization mass spectrometry (MS) shows great potential for in situ molecular analysis of planetary surfaces and microanalysis of space-returned samples or (micro)fossils. Coupled with pyrolysis gas chromatography-mass spectrometry (Py-GC-MS) in ESA's ExoMars project, this technique could help assess further the origin of sulfur-bearing organic matter (OM) recently detected on Mars. To unravel this potential, we analyzed sulfurized microbial OM from ca. 150 million year-old carbonates with laser desorption-ionization mass spectrometry (single- and two-step: LDI-MS and L2MS), in comparison with time-of-flight secondary-ion mass spectrometry (ToF-SIMS), gas chromatography-mass spectrometry (GC-MS), and Py-GC-MS. We show that LDI-MS and L2MS readily detect sulfur-bearing moieties such as (alkyl)thiophenes and (alkyl)benzothiophenes. The mineral matrix, however, made the identification of sulfur-bearing molecules challenging in our L2MS experiment. The dominance of small aromatic hydrocarbons (≤14 carbons) in the LDI-MS and L2MS of the extracted soluble and insoluble OM and of the bulk rock is consistent with the low thermal maturity of the sediment and contrasts with the predominance of larger polycyclic aromatic structures commonly observed in meteorites with these techniques. We detected inorganic ions, in particular VO+, in demineralized OM that likely originate from geoporphyrins, which derive from chlorophylls during sediment diagenesis. Finally, insoluble OM yielded distinct compositions compared with extracted soluble OM, with a greater abundance of ions of mass-to-charge ratio (m/z) over 175 and additional N-moieties. This highlights the potential of laser-assisted MS to decipher the composition of macromolecular OM, in particular to investigate the preservation of biomacromolecules in microfossils. Studies comparing diverse biogenic and abiogenic OM are needed to further assess the use of this technique to search for biosignatures.
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Affiliation(s)
- Siveen Thlaijeh
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG Laboratoire d'Océanologie et de Géosciences, F-59000 Lille, France
| | - Kevin Lepot
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG Laboratoire d'Océanologie et de Géosciences, F-59000 Lille, France
- Institut Universitaire de France (IUF), Paris, France
| | - Yvain Carpentier
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Armelle Riboulleau
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG Laboratoire d'Océanologie et de Géosciences, F-59000 Lille, France
| | - Dumitru Duca
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Marin Vojkovic
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
- Department of Physics, Faculty of Science, University of Split, Ruđera Boškovića 33, 21 000 Split, Croatia
| | - Anuradha Tewari
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG Laboratoire d'Océanologie et de Géosciences, F-59000 Lille, France
| | - Johan Sarazin
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Mathilde Bon
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG Laboratoire d'Océanologie et de Géosciences, F-59000 Lille, France
- Department of Geology (WE13), Ghent University, Krijgslaan 281/S8, Ghent, 9000, Belgium
| | - Nicolas Nuns
- Univ. Lille, CNRS, INRAE, Centrale Lille, Univ. Artois, FR 2638 - IMEC - Institut Michel-Eugène Chevreul, F-59000 Lille, France
| | - Nicolas Tribovillard
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG Laboratoire d'Océanologie et de Géosciences, F-59000 Lille, France
| | - Cristian Focsa
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
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Ai Q, Gao L, Huang D, Yang J, Fu Q, Zheng X, Liu Y, Qiao L, Weng J, Zheng M. Non-target and target analysis to identify and characterize thiophenes in soil from an abandoned coking plant. J Hazard Mater 2023; 460:132444. [PMID: 37660621 DOI: 10.1016/j.jhazmat.2023.132444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/27/2023] [Accepted: 08/29/2023] [Indexed: 09/05/2023]
Abstract
There is concern about the large amounts of aromatic compounds emitted during coking. Previous studies of coking emissions have been focused on polycyclic aromatic hydrocarbons, dioxin-like compounds, phenols, and volatile organic compounds, but previously unidentified compounds produced during coking may also harm human health. Here, the main pollutants in 69 soil samples from an abandoned coking plant were identified by non-target screening using two-dimensional gas chromatography time-of-flight mass spectrometry. Polycyclic aromatic hydrocarbons, long-chain alkanes, and thiophenes were dominant. High concentrations of thiophenes (benzothiophenes, dibenzothiophenes, and benzonaphtholthiophenes) were found. Quantitative analysis of 12 thiophenes (selected because of their concentrations and detection frequencies) was performed, and the concentrations were 0.03-647 μg/g dry weight, which were extremely high compared with concentrations in soil from uncontaminated sites and other industrial sites. Dibenzothiophene and benzo[b]naphtho[2,1-d]thiophene were dominant, accounting for 69% of the total thiophene concentration. Thiophene profiles in very contaminated areas were different from the profile in coal but similar to the profile in tar. Thiophenes in soil at the coking plant may have been supplied in tar leaks, wastewater, coke oven gases, and exhaust gases. A toxicity assessment indicated a strong likelihood of oxidative stress being induced by exposure to multiple thiophenes at the coking plant. The results suggest that thiophene emissions from coking plants should attract more attention than currently.
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Affiliation(s)
- Qiaofeng Ai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lirong Gao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China.
| | - Di Huang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Yang
- China National Environmental Monitoring Center, Beijing 100012, China
| | - Qiang Fu
- China National Environmental Monitoring Center, Beijing 100012, China
| | - Xuan Zheng
- Chongqing Ecological and Environmental Monitoring Center, Chongqing 401147, China
| | - Yang Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Qiao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiyuan Weng
- University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Minghui Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
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Menduti L, Baldoli C, Manetto S, Bolte M, Lerner HW, Longhi G, Villani C, Licandro E, Wagner M. (BO) 2 -Doped Tetrathia[7]helicene: A Configurationally Stable Blue Emitter. Angew Chem Int Ed Engl 2023; 62:e202215468. [PMID: 36409523 PMCID: PMC10107351 DOI: 10.1002/anie.202215468] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/23/2022]
Abstract
Helicenes combine two central themes in chemistry: extended π-conjugation and chirality. Hetero-atom doping preserves both characteristics and allows modulation of the electronic structure of a helicene. Herein, we report the (BO)2 -doped tetrathia[7]helicene 1, which was prepared from 2-methoxy-3,3'-bithiophene in four steps. 1 is formally derived by substituting two (Mes)B-O moieties in place of (H)C=C(H) fragments in two benzene rings of the parent tetrathia[7]helicene. X-ray crystallography revealed a dihedral angle of 50.26(9)° between the two terminal thiophene rings. The (P)-/(M)-1 enantiomers were separated by chiral HPLC and are configurationally stable at room temperature. The experimentally determined enantiomerization barrier of 27.4±0.1 kcal mol-1 is lower than that of tetrathia[7]helicene (39.4±0.1 kcal mol-1 ). The circular dichroism spectra of (P)- and (M)-1 show a perfect mirror-image relationship. 1 is a blue emitter (λem =411 nm) with a photoluminescence quantum efficiency of ΦPL =6 % (cf. tetrathia[7]helicene: λem ≈405 nm, ΦPL =5 %).
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Affiliation(s)
- Luigi Menduti
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438, Frankfurt (Main), Germany.,Dipartimento di Chimica, Università degli Studi di Milano, Via Camillo Golgi 19, 20133, Milano, Italy
| | - Clara Baldoli
- CNR Istituto di Scienze e Tecnologie Chimiche Giulio Natta, Via Camillo Golgi 19, 20133, Milano, Italy
| | - Simone Manetto
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le A. Moro 5, 00185, Roma, Italy
| | - Michael Bolte
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438, Frankfurt (Main), Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438, Frankfurt (Main), Germany
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123, Brescia, Italy
| | - Claudio Villani
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le A. Moro 5, 00185, Roma, Italy
| | - Emanuela Licandro
- Dipartimento di Chimica, Università degli Studi di Milano, Via Camillo Golgi 19, 20133, Milano, Italy
| | - Matthias Wagner
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438, Frankfurt (Main), Germany
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Castellanos-Soriano J, Álvarez-Gutiérrez D, Jiménez MC, Pérez-Ruiz R. Photoredox catalysis powered by triplet fusion upconversion: arylation of heteroarenes. Photochem Photobiol Sci 2022; 21:1175-1184. [PMID: 35303293 DOI: 10.1007/s43630-022-00203-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/03/2022] [Indexed: 10/18/2022]
Abstract
In this work, the feasibility of triplet fusion upconversion (TFU, also named triplet-triplet annihilation upconversion) technology for the functionalization (arylation) of furans and thiophenes has been successfully proven. Activation of aryl halides by TFU leads to generation of aryl radical intermediates; trapping of the latter by the corresponding heteroarenes, which act as nucleophiles, affords the final coupling products. Advantages of this photoredox catalytic method include the use of very mild conditions (visible light, standard conditions), employment of commercially available reactants and low-loading metal-free photocatalysts, absence of any sacrificial agent (additive) in the medium and short irradiation times. The involvement of the high energetic delayed fluorescence in the reaction mechanism has been evidenced by quenching studies, whereas the two-photon nature of this photoredox arylation of furans and thiophenes has been manifested by the dependence on the energy source power. Finally, the scaling-up conditions have been gratifyingly afforded by a continuous-flow device.
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Affiliation(s)
- Jorge Castellanos-Soriano
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Daniel Álvarez-Gutiérrez
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - M Consuelo Jiménez
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - Raúl Pérez-Ruiz
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
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Besis A, Georgiadou E, Samara C. Odor-active volatile organic compounds along the seafront of Thessaloniki, Greece. Implications for sources of nuisance odor. Sci Total Environ 2021; 799:149388. [PMID: 34426346 DOI: 10.1016/j.scitotenv.2021.149388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/08/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Volatile organic compounds (VOCs) have long been associated with odor nuisance at urban sites close to emission sources. Sulfur containing volatile organic compounds (VOSCs) in particular, constitute a major category of malodorous compounds since some of them are characterized by intense odor and low odor thresholds. VOSCs have both, anthropogenic and biogenic sources. The purpose of this study was to assess the concentration levels of a variety of VOCs (mercaptans, sulfides, thiophenes, aromatics and aldehydes) along the seafront of the city of Thessaloniki, northern Greece, a city with frequent citizen complaints for nuisance odor. 1-Hour sampling on adsorption tubes was carried out concurrently at 3 sites along the seafront of the city (EAST, CENTER and WEST) three times during the day in winter and summer 2020. VOCs analysis, performed on a Thermal Desorption - Gas Chromatography/Mass Spectroscopy (TD-GC/MS) system. Diurnal and seasonal variations, and correlations with prevailing meteorological conditions were investigated. Concentrations found along the seafront were compared to previous data from inner-city sites affected by urban and/or industrial activities. Most VOCs were found at lower concentrations at the seafront in comparison to inner-city sites demonstrating better air quality. Typical biogenically-deriving VOSCs such as carbonyl sulfide and dimethyl sulfide were found at the seafront either at higher or at similar levels with inner city thus suggesting negligible contribution from biogenic sources. Odor activity values were further calculated and assessed. Odor nuisance at all seafront sites was significantly higher in winter, being in both seasons maximum at the WEST seafront that is closer to port activities, polluted creek estuaries and industrial facilities. Mercaptans were identified as the major contributors to odor pollution followed by aldehydes. The new findings described in this study might contribute to the better understanding of the odor pollution from VOCs at coastal urban sites.
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Affiliation(s)
- Athanasios Besis
- Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| | - Eleni Georgiadou
- Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Constantini Samara
- Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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Bhilare NV, Auti PB, Marulkar VS, Pise VJ. Diverse Thiophenes as Scaffolds in Anti-cancer Drug Development: A Concise Review. Mini Rev Med Chem 2021; 21:217-232. [PMID: 33267760 DOI: 10.2174/1389557520666201202113333] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/14/2020] [Accepted: 07/06/2020] [Indexed: 11/22/2022]
Abstract
Thiophenes are one of the abundantly found heterocyclic ring systems in many biologically active compounds. Moreover, various substituted thiophenes exert numerous pharmacological actions on account of their isosteric resemblance with compounds of natural origin, thus rendering them with diverse actions like antibacterial, antifungal, antiviral, anti-inflammatory, analgesic, antiallergic, hypotensives, etc. In this review, we specifically explore the chemotherapeutic potential of a variety of structures consisting of thiophene scaffolds as prospective anticancer agents.
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Affiliation(s)
- Neha V Bhilare
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Pratibha B Auti
- Department of Pharmaceutical Chemistry, Sinhagad Institute of Pharmacy, Narhe, Pune-411041, Maharashtra, India
| | - Vinayak S Marulkar
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Vilas J Pise
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
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Riaz M, Ahmad R, Rahman NU, Khan Z, Dou D, Sechel G, Manea R. Traditional uses, Phyto-chemistry and pharmacological activities of Tagetes Patula L. J Ethnopharmacol 2020; 255:112718. [PMID: 32112898 DOI: 10.1016/j.jep.2020.112718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 02/19/2020] [Accepted: 02/23/2020] [Indexed: 06/10/2023]
Abstract
ETHNO-PHARMACOLOGICAL RELEVANCE Tagetes patula L. an important medicinal plant of Asteraceae family is worldwide distributed and reported for its folkloric use in various disorders like skin, eye problems, injury and stomach issues by different communities of China, Nepal, India, Bangladesh and Pakistan. AIM OF THIS REVIEW The present review has focused the ethnomedicinal and traditional uses of T. patula with special reference to Asian countries. Chemical constituents and pharmacological aspects of T. patula was explored. After reading the review the researchers may able to find new insights to further investigate this plant. REVISION OF LITERATURE Google scholar, PubMed, and Science direct, were the major search engines used to get relevant information based on articles and books. RESULTS and Discussion: The ethno-botanical aspects were recorded, the pharmacological aspects like antioxidant, anti-inflammatory, antimicrobial, anti-parasitic and anti-diabetic potentials evaluated both in vivo and in vitro is described. The toxicity or allergic manifestation with the use of the plant is also a section in the article. It is a rich source for thiophene derivatives, flavonoids, carotenoids, terpenes and terpenoids. Various gaps were pointed out for researchers that need to be investigated. CONCLUSION Various traditional uses have been reported in Asian countries that need to be scientifically investigated in depth and several pharmacological activities have been reported for the T. patula but more detailed and mechanism-based studies linked to a particular lead compound need to be targeted in future.
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Affiliation(s)
- Muhammad Riaz
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal Dir (U), 18050, Pakistan.
| | - Rizwan Ahmad
- Natural Products and Alternative Medicines, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
| | - Najm Ur Rahman
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal Dir (U), 18050, Pakistan
| | - Zahid Khan
- Department of Pharmacognosy, Federal Urdu University of Arts, Sciences and Technology Karachi, Pakistan.
| | - Deqiang Dou
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China.
| | - Gabriela Sechel
- Faculty of Medicine, Transilvania University of Brasov, Romania.
| | - Rosana Manea
- Faculty of Medicine, Transilvania University of Brasov, Romania.
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10
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Abstract
The question whether organic compounds occur on Mars remained unanswered for decades. However, the recent discovery of various classes of organic matter in martian sediments by the Curiosity rover seems to strongly suggest that indigenous organic compounds exist on Mars. One intriguing group of detected organic compounds were thiophenes, which typically occur on Earth in kerogen, coal, and crude oil as well as in stromatolites and microfossils. Here we provide a brief synopsis of conceivable pathways for the generation and degradation of thiophenes on Mars. We show that the origin of thiophene derivatives can either be biotic or abiotic, for example, through sulfur incorporation in organic matter during early diagenesis. The potential of thiophenes to represent martian biomarkers is discussed as well as a correlation between abundances of thiophenes and sulfate-bearing minerals. Finally, this study provides suggestions for future investigations on Mars and in Earth-based laboratories to answer the question whether the martian thiophenes are of biological origin.
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Affiliation(s)
- Jacob Heinz
- Center for Astronomy and Astrophysics (ZAA), Astrobiology Research Group, Technische Universität Berlin, Berlin, Germany
| | - Dirk Schulze-Makuch
- Center for Astronomy and Astrophysics (ZAA), Astrobiology Research Group, Technische Universität Berlin, Berlin, Germany
- German Research Centre for Geosciences (GFZ), Section Geomicrobiology, Potsdam, Germany
- Department of Experimental Limnology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Stechlin, Germany
- School of the Environment, Washington State University, Pullman, WA, USA
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11
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El-Metwally SA, Khalil AK, El-Naggar AM, El-Sayed WM. Novel Tetrahydrobenzo [b] Thiophene Compounds Exhibit Anticancer Activity through Enhancing Apoptosis and Inhibiting Tyrosine Kinase. Anticancer Agents Med Chem 2019; 18:1761-1769. [PMID: 30101717 DOI: 10.2174/1871520618666180813120558] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 07/01/2018] [Accepted: 07/14/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Developing new chemotherapeutic agents with molecular targets, larger margin of safety against normal cells and low cost is the target many scientists try to achieve. OBJECTIVE The present study was undertaken to investigate the anticancer activity of a novel series of thiophene compounds and the molecular mechanisms associated. METHOD A series of novel heterocyclic compounds including pyrimidine derivatives (2, 3, 4, 5 8, 11, 12, 13, 14, and 15), thiophene derivatives (6, 7, and 10) and oxoisothiazolidine derivative (9) was synthesized from 4,5,6,7- tetrahydrobenzo[b] thiophene (1). The newly synthesized derivatives along with the parent compound were evaluated for their anticancer activity against human HepG2, MCF7 and HCT116 cell lines and compared to doxorubicin as a reference drug. RESULTS Compound 7 was very selective in targeting only the colon cells. Compounds 1, 5, and 12 showed strong cytotoxic activities against the 3 cell lines at 6-16 µM without any apparent toxicity to the normal fibroblasts WI-38. They had DNA affinity at 29-36 µM. The three compounds enhanced apoptosis to varying degrees elevating the expression of Bax, caspase 9 and caspase 3 in HepG2. Compound 5 was the most potent analogue and was superior to the standard drug used in upregulating the apoptotic genes and inhibiting tyrosine kinase at 1 µM. The IC50 value for compound 5 against TK was 296 nM. CONCLUSION Taken together, this study presents some thiophene scaffolds as auspicious hits for further optimization as specific antiproliferative agents against cancer cells and promising tyrosine kinase inhibitors at nanomolar concentrations.
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Affiliation(s)
| | - Ali K Khalil
- Chemistry Department, Faculty of Science, Ain shams University, Abbassia, Cairo, 11566, Egypt
| | - Abeer M El-Naggar
- Chemistry Department, Faculty of Science, Ain shams University, Abbassia, Cairo, 11566, Egypt
| | - Wael M El-Sayed
- Department of Zoology, University of Ain Shams, Faculty of Science, Abbassia 11566, Cairo, Egypt
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12
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Weidenhamer JD, Montgomery TM, Cipollini DF, Weston PA, Mohney BK. Plant Density and Rhizosphere Chemistry: Does Marigold Root Exudate Composition Respond to Intra- and Interspecific Competition? J Chem Ecol 2019; 45:525-533. [PMID: 31134522 DOI: 10.1007/s10886-019-01073-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 02/01/2019] [Accepted: 04/29/2019] [Indexed: 11/26/2022]
Abstract
The development of techniques to non-destructively monitor allelochemical dynamics in soil using polydimethylsiloxane (PDMS) microtubing (silicone tubing microextraction, or STME) provides a means to test important ecological hypotheses regarding the roles of these compounds in plant-plant interactions. The objective of this study was to investigate the impact of intra- and interspecific competition on the exudation of thiophenes by marigolds (Tagetes patula L.). Marigolds were grown at a density of 1, 3 and 5 plants in pots (8.75 × 8.75 cm) containing two STME samplers. An additional treatment included one marigold surrounded by four velvetleaf (Abutilon theophrasti L.) plants. Marigold roots released two primary thiophenes, 3-buten-1-ynyl)-2,2'-bithienyl and α-terthienyl, which are readily absorbed by silicone microtubing. Thiophene exudation was monitored over the period 15-36 days after planting, at 2-5 day intervals. At the end of the study, root and soil samples were also analyzed for thiophene content. Thiophene production per plant increased over time, and thiophene release was strongly correlated with plant size. These results indicate that thiophene release in this study was passively controlled by resource availability. However, poor growth of velvetleaf plants competing with marigold suggests that thiophenes negatively influenced velvetleaf growth. This study, then, provides indirect evidence that thiophene exudation is insensitive to neighbor identity but differentially effective in inhibiting the growth of heterospecific neighbors.
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Affiliation(s)
- Jeffrey D Weidenhamer
- Department of Chemistry, Geology & Physics, Ashland University, Ashland, OH, 44805, USA.
| | - Tricia M Montgomery
- Department of Chemistry, Geology & Physics, Ashland University, Ashland, OH, 44805, USA
| | - Donald F Cipollini
- Department of Biological Sciences, Wright State University, Dayton, OH, 45435, USA
| | - Paul A Weston
- Graham Centre for Agricultural Innovation (Charles Sturt University and NSW Department of Primary Industries), School of Agricultural and Wine Sciences, Wagga Wagga, NSW, 2678, Australia
| | - Brian K Mohney
- Department of Chemistry, Geology & Physics, Ashland University, Ashland, OH, 44805, USA
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13
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Fouad MM, El-Bendary ER, Suddek GM, Shehata IA, El-Kerdawy MM. Synthesis and in vitro antitumor evaluation of some new thiophenes and thieno[2,3-d]pyrimidine derivatives. Bioorg Chem 2018; 81:587-598. [PMID: 30248510 DOI: 10.1016/j.bioorg.2018.09.022] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 02/07/2023]
Abstract
New thiophene (2-13) and thienopyrimidine (15-27) derivatives have been synthesized. Twenty three compounds were screened against five cell lines namely; hepatocellular carcinoma (liver) HepG-2, epidermoid carcinoma (larynx) Hep-2, mammary gland (breast) MCF-7, human prostate cancer PC-3 and epithelioid cervix carcinoma HeLa. The results revealed that compounds 15,16,17,24 and 25 showed the highest antitumor activity against all tested cell lines compared to Doxorubicin. In order to explain the expected mode of action of the observed anticancer activity, compounds 15,16,17,24 and 25 were selected to screen their DNA binding affinity and enzyme inhibitory activity against DNA polymerase, thymidylate synthase and tyrosine kinase. The results revealed that the tested compounds showed good DNA binding affinity as well as good inhibitory activity against the three enzymes which might explain the observed anticancer activity of the target compounds.
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Affiliation(s)
- Mahasen M Fouad
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Eman R El-Bendary
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University, Egypt
| | - Ghada M Suddek
- Department of Pharmacology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Ihsan A Shehata
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Mohamed M El-Kerdawy
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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14
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Urut GO, Aydin S, Topkaya D, Sahin E, Alp S. Synthesis, Spectroscopic Characterization and Polymerization Abilities of Blue and Green Light Emitting Oxazol-5-one Fluorophores. J Fluoresc 2018; 28:735-741. [PMID: 29785623 DOI: 10.1007/s10895-018-2234-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/23/2018] [Indexed: 11/29/2022]
Abstract
New fluorescent thiophenyl group containing oxazol-5-one fluorophores of 3a (4-(3-thiophenylmethylene)-2-phenyloxazol-5-one), 3b (4-(3-thiophenylmethylene)-2-(4-tolyl)oxazol-5-one) and 3c (4-(3-thiophenylmethylene)-2-(4-nitrophenyl)oxazol-5-one) were synthesized and characterized. The newly synthesized oxazol-5-ones absorption and fluorescence characteristics were studied in some solvents of varying polarities. The heterocyclic chromophores were fluorescent, with two of them, 3a and 3b, emitting blue light, whilst the other one, 3c, emitting green light. The emission maxima of the derivatives varied between 415 and 572 nm according as the extent of conjugation and solvent polarity. As solvent polarity increased, 3c derivatives emission spectra displayed a large bathochromic shift, which revealed the considerable change of the dipole moment of the fluorescent structure because of an intramolecular charge transfer interaction. Furthermore, oxazolones polymerization ability via the thiophenyl group linked to the oxazol-5-one heterocycle showed that copolymerization of 3a was achieved, but homopolymerization was not observed.
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Affiliation(s)
- Gulsiye Ozturk Urut
- Department of Chemistry, Faculty of Sciences, Dokuz Eylul University, Tinaztepe Campus, 35160, Buca, Izmir, Turkey.
| | - Seher Aydin
- Department of Chemistry, Faculty of Sciences, Dokuz Eylul University, Tinaztepe Campus, 35160, Buca, Izmir, Turkey
| | - Derya Topkaya
- Department of Chemistry, Faculty of Sciences, Dokuz Eylul University, Tinaztepe Campus, 35160, Buca, Izmir, Turkey
| | - Elif Sahin
- Department of Chemistry, Faculty of Sciences, Dokuz Eylul University, Tinaztepe Campus, 35160, Buca, Izmir, Turkey
| | - Serap Alp
- Department of Chemistry, Faculty of Sciences, Dokuz Eylul University, Tinaztepe Campus, 35160, Buca, Izmir, Turkey
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15
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Abstract
Thiophene-based π-conjugated organic small molecules and polymers are the research subject of significant current interest owing to their potential use as organic semiconductors in material chemistry. Despite simple and similar molecular structures, the hitherto reported properties of thiophene-based organic semiconductors are rather diverse. Design of high performance organic semiconducting materials requires a thorough understanding of inter- and intra-molecular interactions, solid-state packing, and the influence of both factors on the charge carrier transport. In this chapter, thiophene-based organic semiconductors, which are classified in terms of their chemical structures and their structure-property relationships, are addressed for the potential applications as organic photovoltaics (OPVs), organic field-effect transistors (OFETs) and organic light emitting diodes (OLEDs).
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16
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Choi SM, Lee DJ, Kim JY, Lim ST. Volatile composition and sensory characteristics of onion powders prepared by convective drying. Food Chem 2017; 231:386-92. [PMID: 28450021 DOI: 10.1016/j.foodchem.2017.03.129] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/09/2017] [Accepted: 03/22/2017] [Indexed: 11/22/2022]
Abstract
Volatile composition and sensory characteristics of onion powders prepared by convective drying at different temperatures (50, 70, and 90°C) were investigated. Dipropyl disulfide was the major volatile compound in fresh onion (77.70% of total volatile compounds). However it was considerably lost during drying, reaching 6.93-32.25µg/g solids. Dipropyl disulfide showed a positive correlation with green sensory attribute perceived by descriptive sensory analysis. Thiophenes, which were responsible for caramel and sweet attributes, were produced by drying especially when the drying temperature was high. Aldehydes, another type of volatile compound found in fresh onion, showed a positive correlation with humidity. The aldehyde content in dried onion was the highest at the lowest drying temperature, possibly because the aldehydes were produced by the residual enzymes in fresh onion. Using a low temperature for drying was ideal to retain the aroma of fresh onion.
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17
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Pandya DH, Sharma JA, Jalani HB, Pandya AN, Sudarsanam V, Kachler S, Klotz KN, Vasu KK. Novel thiazole-thiophene conjugates as adenosine receptor antagonists: synthesis, biological evaluation and docking studies. Bioorg Med Chem Lett 2015; 25:1306-9. [PMID: 25686851 DOI: 10.1016/j.bmcl.2015.01.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/16/2015] [Accepted: 01/20/2015] [Indexed: 11/17/2022]
Abstract
Here we report novel thiazole-thiophene conjugates as adenosine receptor antagonists. All the molecules were evaluated for their binding affinity for adenosine receptors. Most of the molecules were found to interact with the A1, A2A and A3 adenosine receptor subtypes with good affinity values. The most potent and selective compound 8n showed an A3Ki value of 0.33μM with selectivity ratios of >90 versus the A1 and >30 versus the A2 subtypes. For compound 8n docking studies into the binding site of the A3 adenosine receptor are provided to visualize its binding mode.
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Affiliation(s)
- Dhaivat H Pandya
- Department of Medicinal Chemistry, B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Sarkhej-Gandhinagar Highway, Thaltej, Ahmedabad 380 054, Gujarat, India
| | - Jayesh A Sharma
- Department of Medicinal Chemistry, B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Sarkhej-Gandhinagar Highway, Thaltej, Ahmedabad 380 054, Gujarat, India
| | - Hitesh B Jalani
- Department of Medicinal Chemistry, B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Sarkhej-Gandhinagar Highway, Thaltej, Ahmedabad 380 054, Gujarat, India
| | - Amit N Pandya
- Department of Medicinal Chemistry, B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Sarkhej-Gandhinagar Highway, Thaltej, Ahmedabad 380 054, Gujarat, India
| | - V Sudarsanam
- Department of Medicinal Chemistry, B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Sarkhej-Gandhinagar Highway, Thaltej, Ahmedabad 380 054, Gujarat, India
| | - Sonja Kachler
- Institut für Pharmakologie und Toxikologie, Julius-Maximilians-Universität Würzburg, Germany
| | - Karl Norbert Klotz
- Institut für Pharmakologie und Toxikologie, Julius-Maximilians-Universität Würzburg, Germany
| | - Kamala K Vasu
- Department of Medicinal Chemistry, B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Sarkhej-Gandhinagar Highway, Thaltej, Ahmedabad 380 054, Gujarat, India.
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18
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Al-Abduly A, Sharma VK. Oxidation of benzothiophene, dibenzothiophene, and methyl-dibenzothiophene by ferrate(VI). J Hazard Mater 2014; 279:296-301. [PMID: 25072136 DOI: 10.1016/j.jhazmat.2014.06.083] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/11/2014] [Accepted: 06/27/2014] [Indexed: 06/03/2023]
Abstract
The reduction of sulfur content in liquid fuel is of a high concern environmentally, and oxydesulfurization approaches have shown high efficiency for removing thiophene-containing compounds from the liquid fuels. The present paper investigates the oxidation of benzothiophene (BT), dibenzothiophene (DBT), and 4-methyl-dibenzothiophene (4-MDBT) by ferrate(VI). The effects of reaction conditions such as the reaction medium pH, solvent type, and adsorbent on the reactivity of ferrate(VI) with the thiophene-containing compounds were investigated. The oxidation of DBT in phosphate-acetonitrile medium was found to be highly sensitive toward the reaction pH, and the highest removal efficiency was observed at the pH 8.0. The complete conversion of BT and DBT to their corresponding sulfones by ferrate(VI) was achieved at room temperature and [ferrate(VI)]/[BT/DBT]∼7.5 while this molar ratio was found to be ∼8.5 for 4-MDBT. The addition of silica gel during the reaction was applied to enhance the oxidation of DBT by ferrate(VI).
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Affiliation(s)
- Abdullah Al-Abduly
- Department of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle Upon Tyne NE1 7RU, United Kingdom
| | - Virender K Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, 1266 TAMU, College Station, TX 77843, USA.
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19
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Viswanatha GL, Hanumanthappa S, Rangappa S, Janardhanan S. Synthesis and Anti-hyperlipidemic Activity of 3H-benzo [4, 5] thieno [2, 3-d] [1, 2, 3] triazin-4-ones: Possible Mechanism of Altered Lipid Metabolism. Oman Med J 2012; 27:388-95. [PMID: 23074549 DOI: 10.5001/omj.2012.96] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 06/25/2012] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES The present study was aimed to evaluate the anti-hyperlipidemic activity of newly synthesized tricyclic benzothieno 1, 2, 3-triazine derivatives namely CP-1 (3-(methyl)- 5,6,7,8-tetrahydro,3H-benzo[4,5] thieno [2,3-d][1,2,3] triazin-4-one), CP-2 (3-(ethyl)- 5,6,7,8-tetrahydro,3H-benzo[4,5] thieno [2,3-d][1,2,3] triazin-4-one) and CP-6 (3-(2-chloro phenyl)-5,6,7,8-tetrahydro,3H-benzo[4,5] thieno [2,3-d][1,2,3] triazin-4-one) against dexamethasone and Triton WR-1339-induced hyper-lipidemia in rats. METHODS Anti-hyperlipidemic activity of the test compounds were evaluated against dexamethasone (10 mg/kg, subcutaneous [s.c.]) and Triton WR-1339 (200 mg/kg, intraperitoneal [i.p]) induced hyperlipidemia in rats. RESULTS Administration of single dose of Triton WR-1339 (200 mg/kg i.p) and dexamethasone (10 mg/kg s.c.) for 8 consecutive days to adult wistar rats caused severe hyperlipidemia characterized by marked increase in serum cholesterol, LDL-C, VLDL-C and triglyceride levels along with an increase in atherogenic index. Serum HDL-C levels were decreased significantly compared to normal control. Pretreatment with Atorvastatin (10 mg/kg, p.o.), CP-1 (25 and 50 mg/kg), CP-2 (25 and 50 mg/kg) and CP-6 (25 and 50 mg/kg) showed significant and dose-dependent protection against dexamethasone and Triton WR-1339-induced hyperlipidemia in rats by maintaining serum total cholesterol, LDL-C, VLDL-C and HDL-C levels within the normal range. Also, a significant decrease in atherogenic index was observed. The anti-hyperlipidemic effect of CP-6 was comparable with reference standard Atorvastatin. Furthermore, CP-6 was found to be more potent than CP-1 and CP-2. CONCLUSION These findings suggest that CP-1, CP-2 and CP-6 possess significant anti-hyperlipidemic activity against experimental animal models of hyperlipidemia.
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Chotana GA, Kallepalli VA, Maleczka RE, Smith MR. Iridium-catalyzed borylation of thiophenes: versatile, synthetic elaboration founded on selective C-H functionalization. Tetrahedron 2008; 64. [PMID: 24385669 DOI: 10.1016/j.tet.2008.02.111] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Iridium-catalyzed borylation has been applied to various substituted thiophenes to synthesize poly-functionalized thiophenes in good to excellent yields. Apart from common functionalities compatible with iridium-catalyzed borylations, additional functional group tolerance to acyl (COMe), and trimethylsilyl (TMS) groups was also observed. High regioselectivities were observed in borylation of 3-and 2,5-di-substituted thiophenes. Electrophilic aromatic C-H/C-Si bromination on thiophene boronate esters is shown to take place without breaking the C-B bond, and one-pot C-H borylation/Suzuki-Miyaura cross-coupling has been accomplished on 2- and 3-borylated thiophenes.
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Affiliation(s)
- Ghayoor A Chotana
- Department of Chemistry, Michigan State University, East Lansing, MI 48824-1322, USA
| | - Venkata A Kallepalli
- Department of Chemistry, Michigan State University, East Lansing, MI 48824-1322, USA
| | - Robert E Maleczka
- Department of Chemistry, Michigan State University, East Lansing, MI 48824-1322, USA
| | - Milton R Smith
- Department of Chemistry, Michigan State University, East Lansing, MI 48824-1322, USA
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