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A comparative study on selectivity and sensitivity of new chromium and copper electrodes. Sci Rep 2022; 12:13400. [PMID: 35927324 PMCID: PMC9352785 DOI: 10.1038/s41598-022-17662-6] [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: 06/10/2022] [Accepted: 07/28/2022] [Indexed: 11/29/2022] Open
Abstract
4-Methylcoumarin-7-yloxy-N-phenyl acetamide and 4-methylcoumarin-7-yloxy-N-4-nitrophenyl acetamide were synthesized and used as new ionophores in the carbon paste matrix to produce two novel potentiometric modified electrodes. The selectivity of the electrode changed from copper (II) to chromium (III) with the addition of a nitro group to the phenyl ring of the ionophore. The ionophores’ tendency to ions was confirmed by UV–visible spectrophotometry. Both electrodes were modified by multi-walled carbon nanotubes (MWCNTs) as an excellent modifier of carbon paste electrode (CPE). The best sensor response in the case of copper (II) selective CPE was obtained by 5% ionophore, 65% graphite powder, 5% MWCNT, and 25% paraffin oil. In addition, in the case of chromium (III) selective CPE, these conditions are 20% ionophore, 50% graphite powder, 5% MWCNT, and 25% paraffin oil. The copper (II) selective CPE showed a Nernstian slope of 32.15 mV/decade within the concentration range of 1.0 × 10–10–1.0 × 10–1 mol L−1, while chromium (III) selective CPE showed a Nernstian slope of 19.28 mV/decade over the concentration range of 1.0 × 10–10–7.0 × 10–3 mol L−1. The electrodes have short response time of less than 5 s and were used successfully to determine copper (II) in wastewater and to speciation of chromium (III) and chromium (VI).
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Medicinal applications of coumarins bearing azetidinone and thiazolidinone moieties. Future Med Chem 2021; 13:1907-1934. [PMID: 34468216 DOI: 10.4155/fmc-2021-0193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Coumarins (2H-chromen-2-ones), also known as benzopyran-2-ones, are a family of naturally occurring heterocyclic ring systems that contain a lactone moiety. Coumarins exhibit a wide range of well-studied pharmacological properties. Over the last few decades, as a result of advances in diverse oriented synthetic routes, physicochemical properties and numerous biological activities, coumarins have become globally studied molecules from various synthetic and medicinal chemists. Recently, several bioactive coumarins bearing azetidinone and thiazolidinone moieties have been found to display a range of therapeutic characteristics, including antimicrobial, anticancer, antidiabetic and anti-inflammatory properties. This review offers a brief description of the synthetic methodologies, known bioactivity and structure-activity relationships of coumarins bearing azetidinones and thiazolidinones.
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da Cruz RMD, Batista TM, de Sousa TKG, Mangueira VM, Dos Santos JAF, de Abrantes RA, Ferreira RC, Leite FC, Brito MT, Batista LM, Veras RC, Vieira GC, Mendonca FJB, de Araújo RSA, Sobral MV. Coumarin derivative 7-isopentenyloxycoumarin induces in vivo antitumor activity by inhibit angiogenesis via CCL2 chemokine decrease. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1701-1714. [PMID: 32388599 DOI: 10.1007/s00210-020-01884-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 04/24/2020] [Indexed: 12/25/2022]
Abstract
Cancer is one of the most urgent problems in medicine. In recent years, cancer is the second leading cause of death globally. In search for more effective and less toxic treatment against cancer, natural products are used as prototypes in the synthesis of new anticancer drugs. The aim of this study was to investigate the in vivo toxicity and the mechanism of antitumor action of 7-isopentenyloxycoumarin (UMB-07), a coumarin derivative with antitumor activity. The toxicity was evaluated in vitro (hemolysis assay), and in vivo (micronucleus and acute toxicity assays). Ehrlich ascites carcinoma model was used to evaluate in vivo antitumor activity of UMB-07 (12.5, 25, or 50 mg/kg, intraperitoneally, i.p.), after 9 days of treatment, as well as toxicity. UMB-07 (2000 μg/mL) induced only 0.8% of hemolysis in peripheral blood erythrocytes of mice. On acute toxicity assay, LD50 (50% lethal dose) was estimated at around 1000 mg/kg (i.p.), and no micronucleated erythrocytes were recorded after UMB-07 (300 mg/kg, i.p.) treatment. UMB-07 (25 and 50 mg/kg) reduced tumor volume and total viable cancer cells. In the mechanism action investigation, no changes were observed on the cell cycle analysis; however, UMB-07 reduced peritumoral microvessels density and CCL2 chemokine levels. In addition, UMB-07 showed weak toxicity on biochemical, hematological, and histological parameters after 9 days of antitumor treatment. The current findings suggest that UMB-07 has low toxicity and exerts antitumor effect by inhibit angiogenesis via CCL2 chemokine decrease.
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Affiliation(s)
- Ryldene Marques Duarte da Cruz
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Tatianne Mota Batista
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Tatyanna Kelvia Gomes de Sousa
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Vivianne Mendes Mangueira
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Jephesson Alex Floriano Dos Santos
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Renata Albuquerque de Abrantes
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Rafael Carlos Ferreira
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Fagner Carvalho Leite
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Monalisa Taveira Brito
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Leônia Maria Batista
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
- Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Robson Cavalcante Veras
- Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | - Giciane Carvalho Vieira
- Departamento de Morfologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil
| | | | | | - Marianna Vieira Sobral
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil.
- Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, João Pessoa, Paraíba, 58051-970, Brazil.
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Design synthesis and anti-proliferative activity of some new coumarin substituted hydrazide–hydrazone derivatives. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01767-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Kaid MM, Gebreil A, El-Hakam SA, Ahmed AI, Ibrahim AA. Sulfamic acid incorporated HKUST-1: a highly active catalyst and efficient adsorbent. RSC Adv 2020; 10:15586-15597. [PMID: 35495473 PMCID: PMC9052581 DOI: 10.1039/d0ra01063d] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/13/2020] [Indexed: 12/01/2022] Open
Abstract
Herein we introduce an effective approach for incorporating sulfamic acid (SA) into HKUST-1. The synthesized materials have been characterized using XRD, XPS, BET, FT-IR, SEM, EDX and TEM. The X-ray diffraction pattern of SA@HKUST-1 is analogous to that of parent HKUST-1 in line shape and d-spacing, proving that chemical modification could be obtained without damage to structural solidity. The XPS spectra confirmed successful sulfonation, due to the single S 2p peak being attributable to SO3H groups at 168 eV. Catalytic efficiency was studied for 7-hydroxy-4-methyl coumarin and 3,4-dihydropyrimidinone synthesis and it was found to be highly dependent on the amount of SA loaded over HKUST-1. Moreover, the adsorptive removal activity of some common organic and inorganic pollutants from water has been studied. To fully understand the adsorption process, the effects of initial dye concentration, pH of solution, adsorbent dosage, contact time and temperature on the adsorption process were successfully studied. Under the optimum conditions 10 wt% SA@HKUST-1 was able to reach the maximum adsorption capacity for Pb2+ (298 mg g−1) and Malachite green (290 mg g−1). Hopefully, this will facilitate research on improving the prospective use of MOFs for future applications. Herein we introduce an effective approach for incorporating sulfamic acid (SA) into HKUST-1.![]()
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Affiliation(s)
- Mahmoud M. Kaid
- Chemistry Department
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | - Ahmed Gebreil
- Chemistry Department
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | | | - Awad. I. Ahmed
- Chemistry Department
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
| | - Amr Awad Ibrahim
- Chemistry Department
- Faculty of Science
- Mansoura University
- Mansoura
- Egypt
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Abid FMA, Jamalis J, Chander S, Wahab RA, Bhagwat DP, Sankaranarayanan M. Synthesis, characterization, in silico and antifungal studies of thiazolidine analogues. CHEMICAL DATA COLLECTIONS 2019; 21:100219. [DOI: 10.1016/j.cdc.2019.100219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Mahmood SU, Saeed A, Bua S, Nocentini A, Gratteri P, Supuran CT. Synthesis, biological evaluation and computational studies of novel iminothiazolidinone benzenesulfonamides as potent carbonic anhydrase II and IX inhibitors. Bioorg Chem 2018; 77:381-386. [PMID: 29421714 DOI: 10.1016/j.bioorg.2018.01.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 01/24/2018] [Accepted: 01/26/2018] [Indexed: 12/19/2022]
Abstract
A series of iminothiazolidinone-sulfonamide hybrids (2a-k) was synthesized by heterocyclization of sulfanilamide thioureas with methyl bromoacetate and characterized by spectroscopic techniques, mass and elemental analysis. The synthesized derivatives were screened against four relevant human (h) isoforms of carbonic anydrases (CAs, EC 4.2.1.1) I, II, IV and IX. These enzymes are involved in a variety of diseases, including glaucoma, retinitis pigmentosa, epilepsy, arthritis, and tumors. Derivatives 2a-2k exhibited the best inhibitory activity against the cytosolyc hCA II (KIs are reaching the sub-nanomolar range, 0.41-37.8 nM) and against the tumor-associated isoform hCA IX (KIs are spanning between 24.3 and 368.3 nM). The binding mode of the reported iminothiazolidinone benzenesulfonamides within hCA II and IX catalytic clefts was investigated by docking studies.
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Affiliation(s)
- Shams-Ul Mahmood
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Sivia Bua
- Università degli Studi di Firenze, Department NEUROFARBA - Pharmaceutical and Nutraceutical Section, University of Firenze, via Ugo Schiff 6, I-50019 Sesto Fiorentino, Firenze, Italy
| | - Alessio Nocentini
- Università degli Studi di Firenze, Department NEUROFARBA - Pharmaceutical and Nutraceutical Section, University of Firenze, via Ugo Schiff 6, I-50019 Sesto Fiorentino, Firenze, Italy; Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019 Sesto Fiorentino, Firenze, Italy.
| | - Paola Gratteri
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Polo Scientifico, Via U. Schiff 6, 50019 Sesto Fiorentino, Firenze, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Department NEUROFARBA - Pharmaceutical and Nutraceutical Section, University of Firenze, via Ugo Schiff 6, I-50019 Sesto Fiorentino, Firenze, Italy
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Constantin S, Lupascu FG, Apotrosoaei M, Vasincu IM, Lupascu D, Buron F, Routier S, Profire L. Synthesis and biological evaluation of the new 1,3-dimethylxanthine derivatives with thiazolidine-4-one scaffold. Chem Cent J 2017; 11:12. [PMID: 28203273 PMCID: PMC5289128 DOI: 10.1186/s13065-017-0241-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 01/11/2017] [Indexed: 11/17/2022] Open
Abstract
Background The xanthine structure has proved to be an important scaffold in the process of developing a wide variety of biologically active molecules such as bronchodilator, hypoglycemiant, anticancer and anti-inflammatory agents. It is known that hyperglycemia generates reactive oxygen species which are involved in the progression of diabetes mellitus and its complications. Therefore, the development of new compounds with antioxidant activity could be an important therapeutic strategy against this metabolic syndrome. Results New thiazolidine-4-one derivatives with xanthine structure have been synthetized as potential antidiabetic drugs. The structure of the synthesized compounds was confirmed by using spectral methods (FT-IR, 1H-NMR, 13C-NMR, 19F-NMR, HRMS). Their antioxidant activity was evaluated using in vitro assays: DPPH and ABTS radical scavenging ability and phosphomolybdenum reducing antioxidant power assay. The developed compounds showed improved antioxidant effects in comparison to the parent compound, theophylline. In the case of both series, the intermediate (5a–k) and final compounds (6a–k), the aromatic substitution, especially in para position with halogens (fluoro, chloro), methyl and methoxy groups, was associated with an increase of the antioxidant effects. Conclusions For several thiazolidine-4-one derivatives the antioxidant effect of was superior to that of their corresponding hydrazone derivatives. The most active compound was 6f which registered the highest radical scavenging activity.Design and synthesis of new thiazolidine-4-one derivatives. ![]() Electronic supplementary material The online version of this article (doi:10.1186/s13065-017-0241-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sandra Constantin
- The Department of Pharmaceutical Chemistry, The Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, No. 16 University Street, Iasi, 700115 Romania
| | - Florentina Geanina Lupascu
- The Department of Pharmaceutical Chemistry, The Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, No. 16 University Street, Iasi, 700115 Romania
| | - Maria Apotrosoaei
- The Department of Pharmaceutical Chemistry, The Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, No. 16 University Street, Iasi, 700115 Romania
| | - Ioana Mirela Vasincu
- The Department of Pharmaceutical Chemistry, The Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, No. 16 University Street, Iasi, 700115 Romania
| | - Dan Lupascu
- The Department of Pharmaceutical Chemistry, The Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, No. 16 University Street, Iasi, 700115 Romania
| | - Frederic Buron
- Institut de Chimie Organique et Analytique, ICOA, Univ Orleans, Orleans, France
| | - Sylvain Routier
- Institut de Chimie Organique et Analytique, ICOA, Univ Orleans, Orleans, France
| | - Lenuta Profire
- The Department of Pharmaceutical Chemistry, The Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, No. 16 University Street, Iasi, 700115 Romania
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de Araújo RSA, Barbosa-Filho JM, Scotti MT, Scotti L, da Cruz RMD, Falcão-Silva VDS, de Siqueira-Júnior JP, Mendonça-Junior FJB. Modulation of Drug Resistance in Staphylococcus aureus with Coumarin Derivatives. SCIENTIFICA 2016; 2016:6894758. [PMID: 27200211 PMCID: PMC4856757 DOI: 10.1155/2016/6894758] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 04/03/2016] [Indexed: 06/05/2023]
Abstract
Semisynthetic and commercial coumarins were investigated for their antibacterial and adjuvant properties with antibiotic agents against norfloxacin, erythromycin, and tetracycline resistant Staphylococcus aureus as based on efflux mechanisms. The coumarins and certain commercial antibiotics had their Minimum Inhibitory Concentrations determined by broth microdilution assay against resistant S. aureus strains which overexpress efflux pump proteins. For evaluation of the modulatory activity, the antibiotics MICs were determined in the presence of the coumarin derivatives at subinhibitory concentration. Although the coumarins did not display relevant antibacterial activity (MIC ≥ 128 µg/mL), they did modulate the antibiotics activities. Various coumarins, especially the alkylated derivatives in combination with antibiotics at subinhibitory concentrations, modulated antibiotic activity, reducing the MIC for tetracycline and norfloxacin by 2 to 8 times. Polar Surface Area (PSA) studies were performed and the fact that the presence of apolar groups is an important factor for the modulatory activity of coumarins was corroborated. Docking on the Penicillin-Binding Protein from MRSA identified that 18 is a potential ligand presenting low E binding. The results indicate that coumarin derivatives modulated antibiotic resistance and may be used as potential antibiotic adjuvants, acting by bacterial efflux pump inhibition in S. aureus.
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Affiliation(s)
- Rodrigo Santos Aquino de Araújo
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - José Maria Barbosa-Filho
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - Marcus Tullius Scotti
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - Luciana Scotti
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - Ryldene Marques Duarte da Cruz
- Laboratory of Genetics of Microorganisms, Molecular Biology Department, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - Vivyanne dos Santos Falcão-Silva
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
- Laboratory of Genetics of Microorganisms, Molecular Biology Department, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - José Pinto de Siqueira-Júnior
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
- Laboratory of Genetics of Microorganisms, Molecular Biology Department, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
| | - Francisco Jaime Bezerra Mendonça-Junior
- Post-Graduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, 58051-900 João Pessoa, PB, Brazil
- Laboratory of Synthesis and Drug Delivery, Biological Science Department, State University of Paraíba, 58071-160 João Pessoa, PB, Brazil
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Synthesis, antimicrobial and nematicidal evaluation of a new class of triazolo[4,3-c]quinazolinylthiazolidinones. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1538-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Evaluation of Antifungal Activity and Mode of Action of New Coumarin Derivative, 7-Hydroxy-6-nitro-2H-1-benzopyran-2-one, against Aspergillus spp. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:925096. [PMID: 26175794 PMCID: PMC4484559 DOI: 10.1155/2015/925096] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/26/2015] [Accepted: 05/28/2015] [Indexed: 01/15/2023]
Abstract
Aspergillus spp. produce a wide variety of diseases. For the treatment of such infections, the azoles and Amphotericin B are used in various formulations. The treatment of fungal diseases is often ineffective, because of increases in azole resistance and their several associated adverse effects. To overcome these problems, natural products and their derivatives are interesting alternatives. The aim of this study was to examine the effects of coumarin derivative, 7-hydroxy-6-nitro-2H-1-benzopyran-2-one (Cou-NO2), both alone and with antifungal drugs. Its mode of action against Aspergillus spp. Cou-NO2 was tested to evaluate its effects on mycelia growth and germination of fungal conidia of Aspergillus spp. We also investigated possible Cou-NO2 action on cell walls (0.8 M sorbitol) and on Cou-NO2 to ergosterol binding in the cell membrane. The study shows that Cou-NO2 is capable of inhibiting both the mycelia growth and germination of conidia for the species tested, and that its action affects the structure of the fungal cell wall. At subinhibitory concentration, Cou-NO2 enhanced the in vitro effects of azoles. Moreover, in combination with azoles (voriconazole and itraconazole) Cou-NO2 displays an additive effect. Thus, our study supports the use of coumarin derivative 7-hydroxy-6-nitro-2H-1-benzopyran-2-one as an antifungal agent against Aspergillus species.
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Mandakmare AU, Narwade ML, Tayade DT, Naik AB. Intermolecular interactions in dioxane-water solutions of substituted coumarins according to ultrasonic data. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2014. [DOI: 10.1134/s0036024414130160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Xi GL, Liu ZQ. Coumarin moiety can enhance abilities of chalcones to inhibit DNA oxidation and to scavenge radicals. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Synthesis and antibacterial activity of analogs of 5-arylidene-3-(4-methylcoumarin-7-yloxyacetylamino)-2-thioxo-1,3-thiazoli-din-4-one. Molecules 2014; 19:13577-86. [PMID: 25255757 PMCID: PMC6271709 DOI: 10.3390/molecules190913577] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/26/2014] [Accepted: 08/27/2014] [Indexed: 11/30/2022] Open
Abstract
In an effort to develop new antimicrobial agents, 3-(4-methylcoumarin-7-yloxyacetylamino)-2-thioxo-1,3-thiazolidin-4-one (4) was synthesized by reaction of thiocarbonylbisthioglycolic acid with ethyl (4-methyl-2-oxo-2H-chromen-7-yloxy)aceto- hydrazide (3), which was prepared in turn from 7-hydroxy-4-methylcoumarin (1). The condensation of compound 4 with different aromatic aldehydes afforded a series of 5-(arylidene)-3-(4-methylcoumarin-7-yloxyacetyl-amino)-2-thioxo-1,3-thiozolidin-4-one analogs 5a–h. The structures of these synthetic compounds were elucidated on the basis of IR, 1H-NMR and 13C-NMR spectral data and ESI-MS spectrometric analysis. Compounds 5a–h were examined for their antibacterial activity against several strains of Gram-positive and Gram-negative bacteria.
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Moghaddam FM, Foroushani BK. Experimental and theoretical study of the spectroscopic properties and the preparation of 3-benzyl-2H-pyrano[3,2-c]chromene-2,5(6H)-dione. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.09.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Synthesis, structure-activity relationships (SAR) and in silico studies of coumarin derivatives with antifungal activity. Int J Mol Sci 2013; 14:1293-309. [PMID: 23306152 PMCID: PMC3565321 DOI: 10.3390/ijms14011293] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 12/02/2012] [Accepted: 12/05/2012] [Indexed: 11/17/2022] Open
Abstract
The increased incidence of opportunistic fungal infections, associated with greater resistance to the antifungal drugs currently in use has highlighted the need for new solutions. In this study twenty four coumarin derivatives were screened in vitro for antifungal activity against strains of Aspergillus. Some of the compounds exhibited significant antifungal activity with MICs values ranging between 16 and 32 µg/mL. The structure-activity relationships (SAR) study demonstrated that O-substitutions are essential for antifungal activity. It also showed that the presence of a short aliphatic chain and/or electron withdrawing groups (NO(2) and/or acetate) favor activity. These findings were confirmed using density functional theory (DFT), when calculating the LUMO density. In Principal Component Analysis (PCA), two significant principal components (PCs) explained more than 60% of the total variance. The best Partial Least Squares Regression (PLS) model showed an r2 of 0.86 and q2(cv) of 0.64 corroborating the SAR observations as well as demonstrating a greater probe N1 interaction for active compounds. Descriptors generated by TIP correlogram demonstrated the importance of the molecular shape for antifungal activity.
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