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Yıldırım H, Yıldız M, Bayrak N, Mataracı-Kara E, Özbek-Çelik B, Otsuka M, Fujita M, Radwan MO, TuYuN AF. Natural-product-inspired design and synthesis of thiolated coenzyme Q analogs as promising agents against Gram-positive bacterial strains: insights into structure–activity relationship, activity profile, mode of action, and molecular docking. RSC Adv 2022; 12:20507-20518. [PMID: 35919160 PMCID: PMC9284347 DOI: 10.1039/d2ra02136f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 07/05/2022] [Indexed: 11/21/2022] Open
Abstract
In an attempt to develop effective and potentially active antibacterial and/or antifungal agents, we designed, synthesized, and characterized thiolated CoQ analogs (CoQ1–8) with an extensive antimicrobial study. The antimicrobial profile of these analogs was determined using four Gram-negative bacteria, three Gram-positive bacteria, and three fungi. Because of the fact that the thiolated CoQ analogs were quite effective on all tested Gram-positive bacterial strains, including Staphylococcus aureus (ATCC® 29213) and Enterococcus faecalis (ATCC® 29212), the first two thiolated CoQ analogs emerged as potentially the most desirable ones in this series. Importantly, after the evaluation of the antibacterial and antifungal activity, we presented an initial structure–activity relationship for these CoQ analogs. In addition, the most promising thiolated CoQ analogs (CoQ1 and CoQ2) having the lowest MIC values on all tested Gram-positive bacterial strains, were further evaluated for their inhibition capacities of biofilm formation after evaluating their in vitro potential antimicrobial activity against each of 20 clinically obtained resistant strains of Gram-positive bacteria. CoQ1 and CoQ2 exhibited potential molecular interactions with S. aureus DNA gyrase in addition to excellent pharmacokinetics and lead-likeness profiles. Our findings offer important implications for a potential antimicrobial drug candidate, in particular for the treatment of infections caused by clinically resistant MRSA isolates. In an attempt to develop effective and potentially active antibacterial and/or antifungal agents, we designed, synthesized, and characterized thiolated CoQ analogs (CoQ1–8) with an extensive antimicrobial study.![]()
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Affiliation(s)
- Hatice Yıldırım
- Department of Chemistry, Engineering Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320, Istanbul, Turkey
| | - Mahmut Yıldız
- Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey
| | - Nilüfer Bayrak
- Department of Chemistry, Engineering Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320, Istanbul, Turkey
| | - Emel Mataracı-Kara
- Department of Pharmaceutical Microbiology, Pharmacy Faculty, Istanbul University, Beyazit, 34116, Istanbul, Turkey
| | - Berna Özbek-Çelik
- Department of Pharmaceutical Microbiology, Pharmacy Faculty, Istanbul University, Beyazit, 34116, Istanbul, Turkey
| | - Masami Otsuka
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5–1 Oe-honmachi, Chuo-ku, Kumamoto 862–0973, Japan
- Department of Drug Discovery, Science Farm Ltd, 1–7–30 Kuhonji, Chuo-ku, Kumamoto 862–0976, Japan
| | - Mikako Fujita
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5–1 Oe-honmachi, Chuo-ku, Kumamoto 862–0973, Japan
| | - Mohamed O. Radwan
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5–1 Oe-honmachi, Chuo-ku, Kumamoto 862–0973, Japan
- Chemistry of Natural Compounds Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Amaç Fatih TuYuN
- Department of Chemistry, Faculty of Science, Istanbul University, Fatih, Istanbul, Turkey
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Cytotoxic mechanisms of primin, a natural quinone isolated from Eugenia hiemalis, on hematological cancer cell lines. Anticancer Drugs 2021; 31:709-717. [PMID: 32639281 DOI: 10.1097/cad.0000000000000937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Considering the high morbidity and mortality rates associated with hematological malignancies and the frequent development of drug resistance by these diseases, the search for new cytotoxic agents is an urgent necessity. The new compounds should present higher efficiency and specificity in inducing tumor cell death, be easily administered and have little or negligible adverse effects. Quinones have been reported in the literature by their several pharmacological properties, including antitumor activity, thus, the aim of this study was to investigate the cytotoxic effect of primin, a natural quinone, on hematological malignancies cell lines. Primin was highly cytotoxic against the three cell lines included in this study (K562, Jurkat and MM.1S) in a concentration- and time-dependent manner, as demonstrated by the MTT method. The compound triggered an apoptotic-like cell death, as observed by ethidium bromide/acridine orange staining, DNA fragmentation and phosphatidylserine exposure after labeling with Annexin V. Both intrinsic and extrinsic apoptosis are involved in cell death induced by primin, as well as the modulation of cell proliferation marker KI-67. The activation of intrinsic apoptosis appears to be related to a decreased Bcl-2 expression and increased Bax expression. While the increase in FasR expression signals activate extrinsic apoptosis. The results suggest that primin is a promising natural molecule that could be used in hematological malignancies therapy or as prototypes for the development of new chemotherapics.
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Han Z, Angerer H, Bischoff I, Qin Y, Stegmann D, Tuz K, Fritz G, Juarez O, Fürst R, Lashley D, Nasiri HR. Concise Synthesis of 1,4-Benzoquinone-Based Natural Products as Mitochondrial Complex I Substrates and Substrate-Based Inhibitors. ChemMedChem 2020; 15:2491-2499. [PMID: 32730688 DOI: 10.1002/cmdc.202000307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/22/2020] [Indexed: 11/06/2022]
Abstract
A short, efficient one-step synthesis of 2-methyl-5-(3-methyl-2-butenyl)-1,4-benzoquinone, a natural product from Pyrola media is described. The synthesis is based on a direct late C-H functionalization of the quinone scaffold. The formation of the natural product was confirmed by means of 2D-NMR spectroscopy. Additional derivatives were synthesized and tested alongside the natural product as potential substrate and substrate-based inhibitors of mitochondrial complex I (MCI). The structure-activity relationship study led to the discovery of 3-methylbuteneoxide-1,4-anthraquinone (1 i), an inhibitor with an IC50 of 5 μM against MCI. The identified molecule showed high selectivity for MCI when tested against other quinone-converting enzymes, including succinate dehydrogenase, and the Na (+)-translocating NADH:quinone oxidoreductase. Moreover, the identified inhibitor was also active in cell-based proliferation assays. Therefore, 1 i can be considered as a novel chemical probe for MCI.
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Affiliation(s)
- Zhenyu Han
- Department of Chemistry, William & Mary, Williamsburg, VA, 23185, USA
| | - Heike Angerer
- Medical School, Institute of Biochemistry II Structural Bioenergetics Group, Goethe University, 60590, Frankfurt am Main, Germany.,Centre for Biomolecular Magnetic Resonance Institute for Biophysical Chemistry, Goethe University, 60438, Frankfurt am Main, Germany
| | - Iris Bischoff
- Institute of Pharmaceutical Biology, Goethe University, 60438, Frankfurt am Main, Germany
| | - Yihan Qin
- Department of Chemistry, William & Mary, Williamsburg, VA, 23185, USA
| | - Dennis Stegmann
- Department of Cellular Microbiology, University Hohenheim, 70599, Stuttgart, Germany
| | - Karina Tuz
- Department of Biological Sciences, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Günter Fritz
- Department of Cellular Microbiology, University Hohenheim, 70599, Stuttgart, Germany
| | - Oscar Juarez
- Department of Biological Sciences, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Robert Fürst
- Institute of Pharmaceutical Biology, Goethe University, 60438, Frankfurt am Main, Germany
| | - Dana Lashley
- Department of Chemistry, William & Mary, Williamsburg, VA, 23185, USA
| | - Hamid R Nasiri
- Department of Cellular Microbiology, University Hohenheim, 70599, Stuttgart, Germany
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Synthesis and activity of BNF15 against drug-resistant Mycobacterium tuberculosis. Future Med Chem 2020; 13:251-267. [PMID: 33295787 DOI: 10.4155/fmc-2019-0154] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: Tuberculosis is the leading cause of mortality among infectious diseases worldwide. Finding a new competent anti tubercular therapy is essential. Materials & methods: We screened thousands of compounds and evaluated their efficacy against Mycobacterium tuberculosis. Results: Initially, 2-nitronaphtho[2,3-b]benzofuran-6,11-dione was active against M. tuberculosis. Next, among 15 newly synthesized derivatives, BNF15 showed promising effect against all drug-sensitive and drug-resistant M. tuberculosis (MIC: 0.02-0.78 μg/ml). BNF15 effectively killed intracellular M. tuberculosis and nontuberculous mycobacteria. BNF15 exhibited a prolonged post antibiotic effect superior to isoniazid, streptomycin, and ethambutol and synergistic interaction with rifampicin. In acute oral toxicity test, BNF15 did not show toxic effect at a concentration up to 2000 mg/kg. Conclusion: These results highlight the perspective of BNF15 to treat drug-resistant M. tuberculosis.
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Horn CM, Aucamp J, Smit FJ, Seldon R, Jordaan A, Warner DF, N’Da DD. Synthesis and in vitro antimycobacterial and antileishmanial activities of hydroquinone-triazole hybrids. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02553-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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6
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Feng Y, Liu Y, Fu Q, Zou Z, Shen J, Cui X. Construction of diaminobenzoquinone imines via ferrocene-initiated radical reaction of benzoquinone with amines. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.09.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Leishmanicidal and antimicrobial activity of primin and primin-containing extracts from Miconia willdenowii. Fitoterapia 2019; 138:104297. [PMID: 31404617 DOI: 10.1016/j.fitote.2019.104297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 11/23/2022]
Abstract
As a part of an ongoing bioprospective project, searching for potential medicinal plants from the Brazilian Atlantic Forest, Miconia willdenowii was selected for its potential leishmanicidal and antimicrobial activities. The crude ethanolic extract of M. willdenowii showed an inhibition of 99.7% of the promastigote forms of Leishmania amazonensis at the concentration of 80 μg/mL. Further investigation of its antimicrobial activity against pathogenic fungi and Gram positive and negative bacteria, revealed a significant antimicrobial activity. A bioguided study with its liquid-liquid partition fractions revealed the hexane fraction (Hex) as the most active against Leishmania, inhibiting 99.2% and 46.9% of the protozoan at concentrations of 40 and 20 μg/mL, respectively. Hex also showed significant antimicrobial activity against Staphylococcus aureus and Candida krusei with IC50 of 15.6 and 62.5 μg/mL, respectively. Purification of Hex led to the isolation of 2-methoxy-6-pentyl-benzoquinone (1, also known as primin) as the active metabolite, probably responsible for the observed antimicrobial and anti-leishmania effects. Primin (1) disclosed leishmanicidal activity (IC50 = 1.25 μM), showing higher potency than the standard drug amphotericin B (IC50 = 5.08 μM), with additional antifungal effects against all tested fungi species. Compound 1 also showed significant activity against S. aureus (IC50 = 8.94 μM), showing a comparable potency with the reference drug chloramphenicol (IC50 = 6.19 μM), but with a potential cytotoxicity towards peripheral human blood mononuclear cells (CC50 = 255.15 μM). Here in, the antimicrobial and anti-L. amazonensis effects of M. willdenowii are reported for the first time, as well as Primin (1) as its probable bioactive metabolite.
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Liu Y, Jing SX, Luo SH, Li SH. Non-volatile natural products in plant glandular trichomes: chemistry, biological activities and biosynthesis. Nat Prod Rep 2019; 36:626-665. [PMID: 30468448 DOI: 10.1039/c8np00077h] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The investigation methods, chemistry, bioactivities, and biosynthesis of non-volatile natural products involving 489 compounds in plant glandular trichomes are reviewed.
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Affiliation(s)
- Yan Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- P. R. China
| | - Shu-Xi Jing
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- P. R. China
| | - Shi-Hong Luo
- College of Bioscience and Biotechnology
- Shenyang Agricultural University
- Shenyang
- P. R. China
| | - Sheng-Hong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- P. R. China
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9
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MICONIDINE acetate, a new selective and cytotoxic compound with synergic potential, induces cell cycle arrest and apoptosis in leukemia cells. Invest New Drugs 2018; 37:912-922. [PMID: 30569243 DOI: 10.1007/s10637-018-0694-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/09/2018] [Indexed: 12/19/2022]
Abstract
Plants are important sources of biologically active compounds and they provide unlimited opportunities for the discovery and development of new drug leads, including new chemotherapeutics. Miconidin acetate (MA) is a hydroquinone derivative isolated from E. hiemalis. In this study we demonstrated that MA was cytotoxic against acute leukemia (AL), solid tumor cells and cancer stem cells, with the strongest effect exhibited against AL. Furthermore, it was non-cytotoxic against non-tumor cells and did not cause significant hemolysis. MA blocks the G2/M phase and causes cytostatic effects, acting in a similar way to dexamethasone by increasing PML expression. The compound also triggered intrinsic and extrinsic apoptosis by modulating Bax, FasR and survivin expression. This led to an extensive mitochondrial damage that resulted in AIF, cytochrome c and endonuclease G release, caspase-3 and PARP cleavage and DNA fragmentation. We have further demonstrated that MA was strongly cytotoxic against neoplastic cells collected from patients with different AL subtypes. Interestingly, MA increased the cytotoxic effect of chemotherapeutics cytarabine and vincristine. This study indicates that MA may be a new agent for AL and highlights its potential as a new source of anticancer drugs. Graphical abstract MA blocks G2/M phase with PML expression and KI67 inhibition, ROS generation and intrinsic and extrinsic apoptosis, leading to mitochondrial damage, caspase 3 and PARP cleavage and DNA fragmentation.
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Sisa M, Dvorakova M, Vanek T. Concise access to primin, miconidin and related natural resorcinols. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.07.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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11
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Jardim GAM, Bower JF, da Silva Júnior EN. Rh-Catalyzed Reactions of 1,4-Benzoquinones with Electrophiles: C-H Iodination, Bromination, and Phenylselenation. Org Lett 2016; 18:4454-7. [PMID: 27599589 DOI: 10.1021/acs.orglett.6b01586] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Under Rh-catalyzed conditions, typically electrophilic 1,4-benzoquinones exhibit nucleophilic reactivity, such that exposure to appropriate electrophiles generates products of C-H iodination, bromination, and phenylselenation. This provides a mild and general method for direct halofunctionalization, and the first method that can achieve direct C-H phenylselenation of this compound class. The scope and limitations of the new protocols are outlined, and representative derivatizations are highlighted.
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Affiliation(s)
- Guilherme A M Jardim
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.,School of Chemistry, University of Bristol , Bristol, BS8 1TS, United Kingdom
| | - John F Bower
- School of Chemistry, University of Bristol , Bristol, BS8 1TS, United Kingdom
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais , Belo Horizonte, MG 31270-901, Brazil
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Nasiri HR, Ferner J, Tükek C, Krishnathas R, Schwalbe H. A concise one-step synthesis of primin and iso-primin. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Ramirez O, Motta-Mena LB, Cordova A, Garza KM. A small library of synthetic di-substituted 1, 4-naphthoquinones induces ROS-mediated cell death in murine fibroblasts. PLoS One 2014; 9:e106828. [PMID: 25197824 PMCID: PMC4157788 DOI: 10.1371/journal.pone.0106828] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 08/04/2014] [Indexed: 01/08/2023] Open
Abstract
Synthesis of compound libraries and their concurrent assessment as selective reagents for probing and modulating biological function continues to be an active area of chemical biology. Microwave-assisted solid-phase Dötz benzannulation reactions have been used to inexpensively synthesize 2, 3-disubstituted-1, 4-naphthoquinone derivatives. Herein, we report the biological testing of a small library of such compounds using a murine fibroblast cell line (L929). Assessment of cellular viability identified three categories of cytotoxic compounds: no toxicity, low/intermediate toxicity and high toxicity. Increased levels of Annexin-V-positive staining and of caspase 3 activity confirmed that low, intermediate, and highly toxic compounds promote cell death. The compounds varied in their ability to induce mitochondrial depolarization and formation of reactive oxygen species (ROS). Both cytotoxic and non-cytotoxic compounds triggered mitochondrial depolarization, while one highly cytotoxic compound did not. In addition, all cytotoxic compounds promoted increased intracellular ROS but the cells were only partially protected from compound-induced apoptosis when in the presence of superoxide dismutase, catalase, or ascorbic acid suggesting utilization of additional pro-death mechanisms. In summary, nine of twelve (75%) 1, 4-naphthoquinone synthetic compounds were cytotoxic. Although the mitochondria did not appear to be a central target for induction of cell death, all of the cytotoxic compounds induced ROS formation. Thus, the data demonstrate that the synthesis regime effectively created cytotoxic compounds highlighting the potential use of the regime and its products for the identification of biologically relevant reagents.
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Affiliation(s)
- Oscar Ramirez
- Dept. of Biological Sciences, University of Texas at El Paso, El Paso, Texas, United States of America
- Border Biomedical Research Center, University of Texas at El Paso, El Paso, Texas, United States of America
| | - Laura B. Motta-Mena
- Dept. of Biological Sciences, University of Texas at El Paso, El Paso, Texas, United States of America
| | - Amanda Cordova
- Dept. of Biological Sciences, University of Texas at El Paso, El Paso, Texas, United States of America
| | - Kristine M. Garza
- Dept. of Biological Sciences, University of Texas at El Paso, El Paso, Texas, United States of America
- Border Biomedical Research Center, University of Texas at El Paso, El Paso, Texas, United States of America
- * E-mail:
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14
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The Orthoester Johnson-Claisen Rearrangement in the Synthesis of Bioactive Molecules, Natural Products, and Synthetic Intermediates - Recent Advances. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301033] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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15
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Wu LQ, Yang CG, Yang LM, Yang LJ. Ultrasound-Assisted Wittig Reaction: A Short, Efficient Synthesis of 2-Methoxy-6-Alkyl-1,4-Benzoquinones. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Leão PN, Costa M, Ramos V, Pereira AR, Fernandes VC, Domingues VF, Gerwick WH, Vasconcelos VM, Martins R. Antitumor activity of hierridin B, a cyanobacterial secondary metabolite found in both filamentous and unicellular marine strains. PLoS One 2013; 8:e69562. [PMID: 23922738 PMCID: PMC3726634 DOI: 10.1371/journal.pone.0069562] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 06/10/2013] [Indexed: 11/19/2022] Open
Abstract
Cyanobacteria are widely recognized as a valuable source of bioactive metabolites. The majority of such compounds have been isolated from so-called complex cyanobacteria, such as filamentous or colonial forms, which usually display a larger number of biosynthetic gene clusters in their genomes, when compared to free-living unicellular forms. Nevertheless, picocyanobacteria are also known to have potential to produce bioactive natural products. Here, we report the isolation of hierridin B from the marine picocyanobacterium Cyanobium sp. LEGE 06113. This compound had previously been isolated from the filamentous epiphytic cyanobacterium Phormidium ectocarpi SAG 60.90, and had been shown to possess antiplasmodial activity. A phylogenetic analysis of the 16S rRNA gene from both strains confirmed that these cyanobacteria derive from different evolutionary lineages. We further investigated the biological activity of hierridin B, and tested its cytotoxicity towards a panel of human cancer cell lines; it showed selective cytotoxicity towards HT-29 colon adenocarcinoma cells.
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Affiliation(s)
- Pedro N Leão
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Porto, Portugal.
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Katoh T, Watanabe K, Sugizaki T, Tozawa Y. A NEW ENTRY TO THE SYNTHESIS OF PRIMIN VIA A B-ALKYL SUZUKI–MIYAURA CROSS-COUPLING REACTION. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Rijo P, Simões M, Francisco A, Rojas R, Gilman R, Vaisberg A, Rodríguez B, Moiteiro C. Antimycobacterial Metabolites fromPlectranthus:Royleanone Derivatives againstMycobacterium tuberculosisStrains. Chem Biodivers 2010; 7:922-32. [DOI: 10.1002/cbdv.200900099] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bero J, Frédérich M, Quetin-Leclercq J. Antimalarial compounds isolated from plants used in traditional medicine. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.11.0001] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
This review covers the compounds with antiplasmodial activity isolated from plants published from 2005 to the end of 2008, organized according to their phytochemical classes. Details are given for substances with IC50 values ≤ 11 μM.
Key findings
Malaria is a major parasitic disease in many tropical and subtropical regions and is responsible for more than 1 million deaths each year in Africa. The rapid spread of resistance encourages the search for new active compounds. Nature and particularly plants used in traditional medicine are a potential source of new antimalarial drugs as they contain molecules with a great variety of structures and pharmacological activities.
Summary
A large number of antimalarial compounds with a wide variety of structures have been isolated from plants and can play a role in the development of new antimalarial drugs. Ethnopharmacological approaches appear to be a promising way to find plant metabolites that could be used as templates for designing new derivatives with improved properties.
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Affiliation(s)
- Joanne Bero
- Université catholique de Louvain, Louvain Drug Research Institute, Analytical Chemistry, Drug Analysis and Pharmacognosy Unit, Brussels, Belgium
| | - Michel Frédérich
- University of Liège, Natural and Synthetic Drugs Research Center, Laboratory of Pharmacognosy, Liège, Belgium
| | - Joëlle Quetin-Leclercq
- Université catholique de Louvain, Louvain Drug Research Institute, Analytical Chemistry, Drug Analysis and Pharmacognosy Unit, Brussels, Belgium
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Ramos EI, Garza KM, Krauth-Siegel RL, Bader J, Martinez LE, Maldonado RA. 2,3-diphenyl-1,4-naphthoquinone: a potential chemotherapeutic agent against Trypanosoma cruzi. J Parasitol 2009; 95:461-6. [PMID: 18788881 DOI: 10.1645/ge-1686.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Accepted: 09/03/2008] [Indexed: 11/10/2022] Open
Abstract
Chagas disease, caused by Trypanosoma cruzi, is a widespread infection in Latin America. Currently, only 2 partially effective and highly toxic drugs, i.e., benznidazole and nifurtimox, are available for the treatment of this disease, and several efforts are underway in the search for better chemotherapeutic agents. Here, we have determined the trypanocidal activity of 2,3-diphenyl-1 ,4-naphthoquinone (DPNQ), a novel quinone derivative. In vitro, DPNQ was highly cytotoxic at a low, micromolar concentration (LD50 = 2.5 microM) against epimastigote, cell-derived trypomastigote, and intracellular amastigote forms of T. cruzi, but not against mammalian cells (LD50 = 130 microM). In vivo studies on the murine model of Chagas disease revealed that DPNQ-treated animals (3 doses of 10 mg/kg/day) showed a significant delay in parasitemia peak and higher (up to 60%) survival rate 70 days post-infection, when compared with the control group (infected, untreated). We also observed a 2-fold decrease in parasitemia between the control group (infected, untreated) and the treated group (infected, treated). No apparent drug toxicity effects were noticed in the control group (uninfected, treated). In addition, we determined that DPNQ is the first competitive inhibitor of T. cruzi lipoamide dehydrogenase (TcLipDH) thus far described. Our results indicate that DPNQ is a promising chemotherapeutic agent against T. cruzi.
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Affiliation(s)
- Enrique I Ramos
- Department of Biological Sciences, The Border Biomedical Research Center, The University of Texas at El Paso, 500 W. University Ave., El Paso, Texas 79968, USA
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