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Mbaba M, Golding TM, Omondi RO, Mohunlal R, Egan TJ, Reader J, Birkholtz LM, Smith GS. Exploring the modulatory influence on the antimalarial activity of amodiaquine using scaffold hybridisation with ferrocene integration. Eur J Med Chem 2024; 271:116429. [PMID: 38663284 DOI: 10.1016/j.ejmech.2024.116429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/13/2024] [Accepted: 04/15/2024] [Indexed: 05/13/2024]
Abstract
Amodiaquine (AQ) is a potent antimalarial drug used in combination with artesunate as part of artemisinin-based combination therapies (ACTs) for malarial treatment. Due to the rising emergence of resistant malaria parasites, some of which have been reported for ACT, the usefulness of AQ as an efficacious therapeutic drug is threatened. Employing the organometallic hybridisation approach, which has been shown to restore the antimalarial activity of chloroquine in the form of an organometallic hybrid clinical candidate ferroquine (FQ), the present study utilises this strategy to modulate the biological performance of AQ by incorporating ferrocene. Presently, we have conceptualised ferrocenyl AQ derivatives and have developed facile, practical routes for their synthesis. A tailored library of AQ derivatives was assembled and their antimalarial activity evaluated against chemosensitive (NF54) and multidrug-resistant (K1) strains of the malaria parasite, Plasmodium falciparum. The compounds generally showed enhanced or comparable activities to those of the reference clinical drugs chloroquine and AQ, against both strains, with higher selectivity for the sensitive phenotype, mostly in the double-digit nanomolar IC50 range. Moreover, representative compounds from this series show the potential to block malaria transmission by inhibiting the growth of stage II/III and V gametocytes in vitro. Preliminary mechanistic insights also revealed hemozoin inhibition as a potential mode of action.
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Affiliation(s)
- Mziyanda Mbaba
- Department of Chemistry, Faculty of Science, University of Cape Town, Rondebosch, 7701, South Africa
| | - Taryn M Golding
- Department of Chemistry, Faculty of Science, University of Cape Town, Rondebosch, 7701, South Africa
| | - Reinner O Omondi
- Department of Chemistry, Faculty of Science, University of Cape Town, Rondebosch, 7701, South Africa
| | - Roxanne Mohunlal
- Department of Chemistry, Faculty of Science, University of Cape Town, Rondebosch, 7701, South Africa
| | - Timothy J Egan
- Department of Chemistry, Faculty of Science, University of Cape Town, Rondebosch, 7701, South Africa
| | - Janette Reader
- Department of Biochemistry, Genetics and Microbiology, Institute for Sustainable Malaria Control, University of Pretoria, Hatfield, 0028, South Africa
| | - Lyn-Marie Birkholtz
- Department of Biochemistry, Genetics and Microbiology, Institute for Sustainable Malaria Control, University of Pretoria, Hatfield, 0028, South Africa
| | - Gregory S Smith
- Department of Chemistry, Faculty of Science, University of Cape Town, Rondebosch, 7701, South Africa.
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2
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Taha M, Rahim F, Khan IU, Uddin N, Farooq RK, Wadood A, Rehman AU, Khan KM. Synthesis of thiazole-based-thiourea analogs: as anticancer, antiglycation and antioxidant agents, structure activity relationship analysis and docking study. J Biomol Struct Dyn 2023; 41:12077-12092. [PMID: 36695088 DOI: 10.1080/07391102.2023.2171134] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/27/2022] [Indexed: 01/26/2023]
Abstract
This work reports the convenient approach for the synthesis of thiazole based thiourea derivatives (1-21) from 2-bromo-1-(4-fluorophenyl)thiazole-1-one and phenyl isothiocyanates. The scope and diversity were achieved from readily available phenyl isothiocyanates. This protocol involves an oxidative C-S bond formation. Moreover, hybrid thiazole based thiourea scaffolds (1-21) according to literature known protocol were screened in vitro for anticancer Potential against breast cancer, antiglycation and antioxidant inhibitory profile. All newly developed scaffolds were showed moderate to good inhibitory potentials ranging from 0.10 ± 0.01 µM to 11.40 ± 0.20 µM, 64.20 ± 0.40 µM to 385.10 ± 1.70 µM and 8.90 ± 0.20 µM to 39.20 ± 0.50 µM against anticancer, antiglycation and antioxidant respectively. Among the series, compounds 12 (IC50 = 0.10 ± 0.01 µM), 10 (IC50 = 64.20 ± 0.40 µM) and 12 (IC50 = 8.90 ± 0.20 µM) with flouro substitution at phenyl ring of thiourea were identified to be the most potent among the series having excellent anticancer, antiglycation and antioxidant potential. The structure of all the newly synthetics scaffolds were confirmed by using different types of spectroscopic techniques such as HREI-MS, 1H- and 13C-NMR spectroscopy. To find structure-activity relationship, molecular docking studies were carried out to understand the binding mode of active inhibitors with active site of enzymes and results supported the experimental data.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Muhammad Taha
- Department of clinical pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Fazal Rahim
- Department of Chemistry, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan
| | - Ihsan Ullah Khan
- Department of Chemistry, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan
| | - Nizam Uddin
- Department of Chemistry, University of Karachi, Karachi, Pakistan
| | - Rai Khalid Farooq
- Department of Neuroscience Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Abdul Wadood
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Ashfaq Ur Rehman
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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Huang Z, Spivey JA, MacMillan SN, Wilson JJ. A ferrocene-containing analogue of the MCU inhibitor Ru265 with increased cell permeability. Inorg Chem Front 2023. [DOI: 10.1039/d2qi02183h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An analogue of the mitochondrial calcium uniporter (MCU) inhibitor Ru265 containing axial ferrocenecarboxylate ligands is reported. This new complex exhibits enhanced cellular uptake compared to the parent compound Ru265.
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Affiliation(s)
- Zhouyang Huang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Jesse A. Spivey
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Justin J. Wilson
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
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Sharma B, Kumar V. Has Ferrocene Really Delivered Its Role in Accentuating the Bioactivity of Organic Scaffolds? J Med Chem 2021; 64:16865-16921. [PMID: 34792350 DOI: 10.1021/acs.jmedchem.1c00390] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ferrocene is an important structural core in bioorganometallic chemistry because of its inherent stability, excellent redox properties, and low toxicity. Ferroquine and ferrocifen are two of the most notable contributions of ferrocene to medicinal chemistry with remarkable antimalarial and anticancer properties. The improved medicinal properties of these drug candidates highlight the impact that ferrocene can have on the molecular and biological properties of the bioactive compounds. In this Perspective, we investigate the scope and limitations of ferrocene incorporation into organic compounds/natural products on their mode of action and biological activities. We have also discussed the detailed role of ferrocene modifications in influencing the anticancer, antimalarial, and antimicrobial properties of various bioactive moieties to design safer and promising ferrocene-based drugs.
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Affiliation(s)
- Bharvi Sharma
- Department of Chemistry, Guru Nanak Dev University, Amritsar, Punjab 143005, India
| | - Vipan Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar, Punjab 143005, India
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Welsh A, Mbaba M, Prince S, Smith GS. Synthesis, molecular modeling and preliminary anticancer evaluation of 2-ferrocenylbenzimidazole metallofragments. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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6
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Ujan R, Channar PA, Bahadur A, Abbas Q, Shah M, Rashid S, Iqbal S, Saeed A, Abd-Rabboh HS, Raza H, Hassan M, Siyal AN, Mahesar PA, Lal B, Channar KA, Khan BA, Nawaz M, Rajoka MSR, Kim JM. Synthesis, kinetics and biological assay of some novel aryl bis-thioureas: A potential drug candidates for Alzheimer's disease. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Nudelman A. Dimeric Drugs. Curr Med Chem 2021; 29:2751-2845. [PMID: 34375175 DOI: 10.2174/0929867328666210810124159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/18/2021] [Accepted: 06/29/2021] [Indexed: 11/22/2022]
Abstract
This review intends to summarize the structures of an extensive number of symmetrical-dimeric drugs, having two monomers linked via a bridging entity while emphasizing the large versatility of biologically active substances reported to possess dimeric structures. The largest number of classes of these compounds consist of anticancer agents, antibiotics/antimicrobials, and anti-AIDS drugs. Other symmetrical-dimeric drugs include antidiabetics, antidepressants, analgesics, anti-inflammatories, drugs for the treatment of Alzheimer's disease, anticholesterolemics, estrogenics, antioxidants, enzyme inhibitors, anti-Parkisonians, laxatives, antiallergy compounds, cannabinoids, etc. Most of the articles reviewed do not compare the activity/potency of the dimers to that of their corresponding monomers. Only in limited cases, various suggestions have been made to justify unexpected higher activity of the dimers vs. the corresponding monomers. These suggestions include statistical effects, the presence of dimeric receptors, binding of a dimer to two receptors simultaneously, and others. It is virtually impossible to predict which dimers will be preferable to their respective monomers, or which linking bridges will lead to the most active compounds. It is expected that the extensive number of articles summarized, and the large variety of substances mentioned, which display various biological activities, should be of interest to many academic and industrial medicinal chemists.
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Affiliation(s)
- Abraham Nudelman
- Chemistry Department, Bar Ilan University, Ramat Gan 52900, Israel
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8
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Zhao LL, Yan CG. Synthesis of p-tert-Butyldihomooxacalix[4]arene Mono-substituted Dithiocarbonylhydrazones and Dithiosemicarbazones. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2019.1600559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ling-Ling Zhao
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, China
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9
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Mbaba M, Dingle LMK, Swart T, Cash D, Laming D, de la Mare JA, Taylor D, Hoppe HC, Biot C, Edkins AL, Khanye SD. The in Vitro Antiplasmodial and Antiproliferative Activity of New Ferrocene-Based α-Aminocresols Targeting Hemozoin Inhibition and DNA Interaction. Chembiochem 2020; 21:2643-2658. [PMID: 32307798 DOI: 10.1002/cbic.202000132] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/15/2020] [Indexed: 01/30/2023]
Abstract
The conjugation of organometallic complexes to known bioactive organic frameworks is a proven strategy revered for devising new drug molecules with novel modes of action. This approach holds great promise for the generation of potent drug leads in the quest for therapeutic chemotypes with the potential to overcome the development of clinical resistance. Herein, we present the in vitro antiplasmodial and antiproliferative investigation of ferrocenyl α-aminocresol conjugates assembled by amalgamation of the organometallic ferrocene unit and an α-aminocresol scaffold possessing antimalarial activity. The compounds pursued in the study exhibited higher toxicity towards the chemosensitive (3D7) and -resistant (Dd2) strains of the Plasmodium falciparum parasite than to the human HCC70 triple-negative breast cancer cell line. Indication of cross-resistance was absent for the compounds evaluated against the multi-resistant Dd2 strain. Structure-activity analysis revealed that the phenolic hydroxy group and rotatable σ bond between the α-carbon and NH group of the α-amino-o-cresol skeleton are crucial for the biological activity of the compounds. Spectrophotometric techniques and in silico docking simulations performed on selected derivatives suggest that the compounds show a dual mode of action involving hemozoin inhibition and DNA interaction via minor-groove binding. Lastly, compound 9 a, identified as a possible lead, exhibited preferential binding for the plasmodial DNA isolated from 3D7 P. falciparum trophozoites over the mammalian calf thymus DNA, thereby substantiating the enhanced antiplasmodial activity of the compounds. The presented research demonstrates the strategy of incorporating organometallic complexes into known biologically active organic scaffolds as a viable avenue to fashion novel multimodal compounds with potential to counter the development drug resistance.
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Affiliation(s)
- Mziyanda Mbaba
- Faculty of Science, Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa
| | - Laura M K Dingle
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa
| | - Tarryn Swart
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Devon Cash
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa
| | - Dustin Laming
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Jo-Anne de la Mare
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa.,Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Dale Taylor
- Faculty of Medicine, Division of Clinical Pharmacology, University of Cape Town Observatory, Cape Town, 7925, South Africa
| | - Heinrich C Hoppe
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Christophe Biot
- Université de Lille, CNRS, UMR 8576 UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, 59000, Lille, France
| | - Adrienne L Edkins
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa.,Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa.,Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Setshaba D Khanye
- Faculty of Science, Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa.,Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa.,Faculty of Pharmacy, Division of Pharmaceutical Chemistry, Rhodes University, Grahamstown, 6140, South Africa
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10
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Experimental and computational analysis of 1-(4-chloro-3-nitrophenyl)-3-(3,4-dichlorophenyl)thiourea. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127587] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Sanz del Olmo N, Carloni R, Ortega P, García-Gallego S, de la Mata FJ. Metallodendrimers as a promising tool in the biomedical field: An overview. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2020.03.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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13
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Stringer T, Wiesner L, Smith GS. Ferroquine-derived polyamines that target resistant Plasmodium falciparum. Eur J Med Chem 2019; 179:78-83. [DOI: 10.1016/j.ejmech.2019.06.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 06/07/2019] [Accepted: 06/07/2019] [Indexed: 01/14/2023]
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14
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Summers KL. A Structural Chemistry Perspective on the Antimalarial Properties of Thiosemicarbazone Metal Complexes. Mini Rev Med Chem 2019; 19:569-590. [DOI: 10.2174/1389557518666181015152657] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 06/26/2018] [Accepted: 09/30/2018] [Indexed: 01/14/2023]
Abstract
Malaria is a potentially life-threatening disease, affecting approx. 214 million people worldwide. Malaria is caused by a protozoan, Plasmodium falciparum, which is transmitted through the Anopheles mosquito. Malaria treatment is becoming more challenging due to rising resistance against the antimalarial drug, chloroquine. Novel compounds that target aspects of parasite development are being explored in attempts to overcome this wide-spread problem. Anti-malarial drugs target specific aspects of parasite growth and development within the human host. One of the most effective targets is the inhibition of hematin formation, either through inhibition of cysteine proteases or through iron chelation. Metal-thiosemicarbazone (TSC) complexes have been tested for antimalarial efficacy against drug-sensitive and drug-resistant strains of P. falciparum. An array of TSC complexes with numerous transition metals, including ruthenium, palladium, and gold has displayed antiplasmodial activity. Au(I)- and Pd(II)-TSC complexes displayed the greatest potency; 4-amino-7-chloroquine moieties were also found to improve antiplasmodial activity of TSCs. Although promising metal-TSC drug candidates have been tested against laboratory strains of P. falciparum, problems arise when attempting to compare between studies. Future work should strive to completely characterize synthesized metal-TSC structures and assess antiplasmodial potency against several drug-sensitive and drugresistant strains. Future studies need to precisely determine IC50 values for antimalarial drugs, chloroquine and ferroquine, to establish accurate standard values. This will make future comparisons across studies more feasible and potentially help reveal structure-function relationships. Investigations that attempt to link drug structures or properties to antiplasmodial mechanism(s) of action will aid in the design of antimalarial drugs that may combat rising drug resistance.
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Affiliation(s)
- Kelly L. Summers
- Department of Chemistry, College of Arts and Science, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada
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15
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Asghar F, Lal B, Badshah A, Butler IS, Nawaz Tahir M. Synthesis and computational study of new meta- and para-substituted ferrocenyl thioureas as potent protein kinase inhibitors and cytotoxic agents. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.12.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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16
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Cassells I, Stringer T, Hutton AT, Prince S, Smith GS. Impact of various lipophilic substituents on ruthenium(II), rhodium(III) and iridium(III) salicylaldimine-based complexes: synthesis, in vitro cytotoxicity studies and DNA interactions. J Biol Inorg Chem 2018; 23:763-774. [DOI: 10.1007/s00775-018-1567-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 04/28/2018] [Indexed: 12/31/2022]
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17
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Design, synthesis and anticancer evaluation of novel spirobenzo[h]chromene and spirochromane derivatives with dual EGFR and B-RAF inhibitory activities. Eur J Med Chem 2018; 150:567-578. [DOI: 10.1016/j.ejmech.2018.03.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 01/16/2023]
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18
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Bala V, Chhonker YS. Recent developments in anti-Trichomonas research: An update review. Eur J Med Chem 2017; 143:232-243. [PMID: 29175675 DOI: 10.1016/j.ejmech.2017.11.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/09/2017] [Accepted: 11/10/2017] [Indexed: 12/12/2022]
Abstract
Trichomonas vaginalis is a major non-viral sexually-transmitted infection resulted into serious obstetrical and gynecological troubles. The increasing resistance to nitroimidazole therapy and recurrence makes it crucial to develop new drugs against trichomoniasis. Over the past few years, a large number of research articles highlighting the synthetic and natural product research to combat Trichomonas vaginalis have been published. Electronic databases were searched to collect all data from the year 2006 through June 2017 for anti-Trichomonas activity potential of synthetic and natural products. This review article put together the synthetic and natural product research to find out an effective metronidazole alternative to cure trichomoniasis.
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Affiliation(s)
- Veenu Bala
- Department of Pharmaceutical Sciences, Mohanlal Sukhadia University, Udaipur, 313001, India.
| | - Yashpal S Chhonker
- College of Pharmacy, Department of Pharmacy Practice, University of Nebraska Medical Centre, Omaha, USA.
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19
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Noritake SM, Liu J, Kanetake S, Levin CE, Tam C, Cheng LW, Land KM, Friedman M. Phytochemical-rich foods inhibit the growth of pathogenic trichomonads. Altern Ther Health Med 2017; 17:461. [PMID: 28903731 PMCID: PMC5598040 DOI: 10.1186/s12906-017-1967-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 09/05/2017] [Indexed: 12/29/2022]
Abstract
Background Plants produce secondary metabolites that often possess widespread bioactivity, and are then known as phytochemicals. We previously determined that several phytochemical-rich food-derived preparations were active against pathogenic foodborne bacteria. Trichomonads produce disease (trichomoniasis) in humans and in certain animals. Trichomonads are increasingly becoming resistant to conventional modes of treatment. It is of interest to test bioactive, natural compounds for efficacy against these pathogens. Methods Using a cell assay, black tea, green tea, grape, pomegranate, and jujube extracts, as well as whole dried jujube were tested against three trichomonads: Trichomonas vaginalis strain G3 (found in humans), Tritrichomonas foetus strain D1 (found in cattle), and Tritrichomonas foetus-like organism strain C1 (found in cats). The most effective of the test substances was subsequently tested against two metronidazole-resistant Trichomonas vaginalis strains, and on normal mucosal flora. Results Black tea extract inhibited all the tested trichomonads, but was most effective against the T. vaginalis organisms. Inhibition by black tea was correlated with the total and individual theaflavin content of the two tea extracts determined by HPLC. Metronidazole-resistant Trichomonas vaginalis strains were also inhibited by the black tea extract. The response of the organisms to the remaining preparations was variable and unique. We observed no effect of the black tea extract on common normal flora bacteria. Conclusions The results suggest that the black tea, and to a lesser degree green tea, grape seed, and pomegranate extracts might present possible natural alternative therapeutic agents to treat Trichomonas vaginalis infections in humans and the related trichomonad infections in animals, without negatively affecting the normal flora.
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20
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Bielenica A, Sanna G, Madeddu S, Struga M, Jóźwiak M, Kozioł AE, Sawczenko A, Materek IB, Serra A, Giliberti G. New thiourea and 1,3-thiazolidin-4-one derivatives effective on the HIV-1 virus. Chem Biol Drug Des 2017; 90:883-891. [PMID: 28434186 DOI: 10.1111/cbdd.13009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/12/2017] [Accepted: 04/14/2017] [Indexed: 12/24/2022]
Abstract
Thiourea derivatives have been reported to possess many biological activities, among them antiviral and antitumoral properties. As part of our continuing effort to develop new active compounds, we report the synthesis and the evaluation of new fifteen thiourea derivatives with 1,3-benzothiazole-2-yl moiety, among them a group of biologically active (1-7) also underwent cyclization to 1,3-thiazolidin-4-ones. Molecular structure of four compounds (4, 13, 15 and 3a) was determined by an X-ray crystallography. We here report the evaluation of their cytotoxicity against human leukaemia/lymphoma- and solid tumour-derived cell lines and of their antiviral activity against HIV-1 and representatives of ssRNA and dsDNA viruses. Derivative 5 showed an interesting activity against HIV-1 wild type and against variants carrying clinically relevant mutations. A colorimetric enzyme immunoassay clarified its mode of action as a non-nucleoside inhibitor of the reverse transcriptase.
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Affiliation(s)
- Anna Bielenica
- Chair and Department of Biochemistry, Medical University of Warsaw, Warszawa, Poland
| | - Giuseppina Sanna
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
| | - Silvia Madeddu
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
| | - Marta Struga
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland.,Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
| | - Michał Jóźwiak
- Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland.,Department of Biochemistry, Second Faculty of Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Anna E Kozioł
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
| | | | - Ilona B Materek
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
| | - Alessandra Serra
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
| | - Gabriele Giliberti
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
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Aswathy V, Mary YS, Jojo P, Panicker CY, Bielenica A, Armaković S, Armaković SJ, Brzózka P, Krukowski S, Van Alsenoy C. Investigation of spectroscopic, reactive, transport and docking properties of 1-(3,4-dichlorophenyl)-3-[3-(trifluoromethyl)phenyl]thiourea (ANF-6): Combined experimental and computational study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Stringer T, Seldon R, Liu N, Warner DF, Tam C, Cheng LW, Land KM, Smith PJ, Chibale K, Smith GS. Antimicrobial activity of organometallic isonicotinyl and pyrazinyl ferrocenyl-derived complexes. Dalton Trans 2017; 46:9875-9885. [DOI: 10.1039/c7dt01952a] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Isonicotinyl and pyrazinyl ferrocenyl-derived complexes were evaluatedin vitrofor antimycobacterial and antiparasitic activity.
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Liu J, Kanetake S, Wu YH, Tam C, Cheng LW, Land KM, Friedman M. Antiprotozoal Effects of the Tomato Tetrasaccharide Glycoalkaloid Tomatine and the Aglycone Tomatidine on Mucosal Trichomonads. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:8806-8810. [PMID: 27934291 DOI: 10.1021/acs.jafc.6b04030] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The present study investigated the inhibitory effects of the commercial tetrasaccharide tomato glycoalkaloid tomatine and the aglycone tomatidine on three mucosal pathogenic protozoa that are reported to infect humans, cattle, and cats, respectively: Trichomonas vaginalis strain G3, Tritrichomonas foetus strain D1, and Tritrichomonas foetus strain C1. A preliminary screen showed that tomatine at 100 μM concentration completely inhibited the growth of all three trichomonads. In contrast, the inhibition of all three pathogens by tomatidine was much lower, suggesting the involvement of the lycotetraose carbohydrate side chain in the mechanism of inhibition. Midpoints of concentration-response sigmoid plots of tomatine on the three strains correspond to IC50 values, the concentration that inhibits 50% of growth of the pathogenic protozoa. The concentration data were used to calculate the IC50 values for G3, D1, and C1 of 7.9, 1.9, and 2.2 μM, respectively. The results show an approximately 4-fold variation from the lowest to the highest value (lowest activity). Although the inhibition by tomatine was not as effective as that of the medicinal drug metronidazole, the relatively low IC50 values for both T. vaginalis and T. foetus indicated tomatine as a possible natural alternative therapeutic for trichomoniasis in humans and food-producing (cattle and pigs) and domestic (cats) animals. Because tomatine has the potential to serve as a new antiprotozoan functional (medical) food, the distribution of this glycoalkaloid in tomatoes and suggestions for further research are discussed.
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Affiliation(s)
- Jenny Liu
- Department of Biological Sciences, University of the Pacific , Stockton, California 95211, United States
| | - Sierra Kanetake
- Department of Biological Sciences, University of the Pacific , Stockton, California 95211, United States
| | - Yun-Hsuan Wu
- Department of Biological Sciences, University of the Pacific , Stockton, California 95211, United States
| | - Christina Tam
- Foodborne Toxin Detection and Prevention, Agricultural Research Service, United States Department of Agriculture , Albany, California 94556, United States
| | - Luisa W Cheng
- Foodborne Toxin Detection and Prevention, Agricultural Research Service, United States Department of Agriculture , Albany, California 94556, United States
| | - Kirkwood M Land
- Department of Biological Sciences, University of the Pacific , Stockton, California 95211, United States
| | - Mendel Friedman
- Healthy Processed Foods Research, Agricultural Research Service, United States Department of Agriculture , Albany, California 94556, United States
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Baartzes N, Stringer T, Okombo J, Seldon R, Warner DF, de Kock C, Smith PJ, Smith GS. Mono- and polynuclear ferrocenylthiosemicarbazones: Synthesis, characterisation and antimicrobial evaluation. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.06.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Stringer T, De Kock C, Guzgay H, Okombo J, Liu J, Kanetake S, Kim J, Tam C, Cheng LW, Smith PJ, Hendricks DT, Land KM, Egan TJ, Smith GS. Mono- and multimeric ferrocene congeners of quinoline-based polyamines as potential antiparasitics. Dalton Trans 2016; 45:13415-26. [DOI: 10.1039/c6dt02685k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of mono- and multimeric polyamine-containing ferrocenyl complexes bearing a quinoline motif were prepared.
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26
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Adams M, de Kock C, Smith PJ, Land KM, Liu N, Hopper M, Hsiao A, Burgoyne AR, Stringer T, Meyer M, Wiesner L, Chibale K, Smith GS. Improved antiparasitic activity by incorporation of organosilane entities into half-sandwich ruthenium(II) and rhodium(III) thiosemicarbazone complexes. Dalton Trans 2015; 44:2456-68. [PMID: 25559246 DOI: 10.1039/c4dt03234a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A series of ferrocenyl- and aryl-functionalised organosilane thiosemicarbazone compounds was obtained via a nucleophilic substitution reaction with an amine-terminated organosilane. The thiosemicarbazone (TSC) ligands were further reacted with either a ruthenium dimer [(η(6-i)PrC6H4Me)Ru(μ-Cl)Cl]2 or a rhodium dimer [(Cp*)Rh(μ-Cl)Cl]2 to yield a series of cationic mono- and binuclear complexes. The thiosemicarbazone ligands, as well as their metal complexes, were characterised using NMR and IR spectroscopy, and mass spectrometry. The molecular structure of the binuclear ruthenium(ii) complex was determined by single-crystal X-ray diffraction analysis. The thiosemicarbazones and their complexes were evaluated for their in vitro antiplasmodial activities against the chloroquine-sensitive (NF54) and chloroquine-resistant (Dd2) Plasmodium falciparum strains, displaying activities in the low micromolar range. Selected compounds were screened for potential β-haematin inhibition activity, and it was found that two Rh(iii) complexes exhibited moderate to good inhibition. Furthermore, the compounds were screened for their antitrichomonal activities against the G3 Trichomonas vaginalis strain, revealing a higher percentage of growth inhibition for the ruthenium and rhodium complexes over their corresponding ligand.
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Affiliation(s)
- Muneebah Adams
- Department of Chemistry, University of Cape Town, Rondebosch 7701, Cape Town, South Africa.
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27
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Synthesis, characterization and pharmacological evaluation of ferrocenyl azines and their rhodium(I) complexes. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.04.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Stringer T, Taylor D, Guzgay H, Shokar A, Au A, Smith PJ, Hendricks DT, Land KM, Egan TJ, Smith GS. Polyamine quinoline rhodium complexes: synthesis and pharmacological evaluation as antiparasitic agents against Plasmodium falciparum and Trichomonas vaginalis. Dalton Trans 2015. [DOI: 10.1039/c5dt02378e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Salicylaldimine ligands and their corresponding Rh(i) complexes were prepared and evaluated as antiparasitic agents.
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Affiliation(s)
- Tameryn Stringer
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
| | - Dale Taylor
- Division of Clinical Pharmacology
- Department of Medicine
- University of Cape Town Medical School
- South Africa
| | - Hajira Guzgay
- Division of Medical Biochemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
| | - Ajit Shokar
- Department of Biological Sciences
- University of the Pacific
- Stockton
- USA
| | - Aaron Au
- Department of Biological Sciences
- University of the Pacific
- Stockton
- USA
| | - Peter J. Smith
- Division of Clinical Pharmacology
- Department of Medicine
- University of Cape Town Medical School
- South Africa
| | - Denver T. Hendricks
- Division of Medical Biochemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
| | - Kirkwood M. Land
- Department of Biological Sciences
- University of the Pacific
- Stockton
- USA
| | - Timothy J. Egan
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
| | - Gregory S. Smith
- Department of Chemistry
- University of Cape Town
- Rondebosch 7701
- South Africa
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