1
|
Almeida Júnior ASD, Freitas Viana Leal MM, Marques DSC, Silva ALD, Souza Bezerra RD, Siqueira de Souza YF, Mendonça Silveira ME, Santos FA, Alves LC, de Lima Aires A, Cruz Filho IJD, do Carmo Alves de Lima M. Therapeutic potential of hydantoin and thiohydantoin compounds against Schistosoma mansoni: An integrated in vitro, DNA, ultrastructural, and ADMET in silico approach. Mol Biochem Parasitol 2024; 260:111646. [PMID: 38950658 DOI: 10.1016/j.molbiopara.2024.111646] [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: 02/10/2024] [Revised: 06/01/2024] [Accepted: 06/18/2024] [Indexed: 07/03/2024]
Abstract
The study aimed to conduct in vitro biological assessments of hydantoin and thiohydantoin compounds against mature Schistosoma mansoni worms, evaluate their cytotoxic effects and predict their pharmacokinetic parameters using computational methods. The compounds showed low in vitro cytotoxicity and were not considered hemolytic. Antiparasitic activity against adult S. mansoni worms was tested with all compounds at concentrations ranging from 200 to 6.25 μM. Compounds SC01, SC02, and SC03 exhibited low activity. Compounds SC04, SC05, SC06 and SC07 caused 100 % mortality within 24 h of incubation at a concentration of 100 and 200 μM. Thiohydantoin SC04 exhibited the highest activity, resulting in 100 % mortality after 24 h of incubation at a concentration of 50 μM and IC50 of 28 µM. In the ultrastructural analysis (SEM), the compound SC04 (200 µM) induced integumentary changes, formation of integumentary blisters, and destruction of tubercles and spicules. Therefore, the SC04 compound shows promise as an antiparasitic against S. mansoni.
Collapse
Affiliation(s)
- Antônio Sérgio de Almeida Júnior
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil
| | - Mayse Manuele Freitas Viana Leal
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil
| | - Diego Santa Clara Marques
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil.
| | - Anekécia Lauro da Silva
- Department of Medicine, Federal University of Vale do Rio São Francisco (UNIVASF), Avenida da Amizade, s/n, Sal Torrado, Paulo Afonso, BA 48605-780, Brazil
| | - Rafael de Souza Bezerra
- Department of Medicine, Federal University of Vale do Rio São Francisco (UNIVASF), Avenida da Amizade, s/n, Sal Torrado, Paulo Afonso, BA 48605-780, Brazil
| | - Yandra Flaviana Siqueira de Souza
- Department of Medicine, Federal University of Vale do Rio São Francisco (UNIVASF), Avenida da Amizade, s/n, Sal Torrado, Paulo Afonso, BA 48605-780, Brazil
| | - Maria Eduardade Mendonça Silveira
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil
| | - Fábio Ab Santos
- Aggeu Magalhães Institute. Oswaldo Cruz Foundation (IAM-FIOCRUZ), Cidade Universitária, Recife, PE 50670-420, Brazil
| | - Luiz Carlos Alves
- Aggeu Magalhães Institute. Oswaldo Cruz Foundation (IAM-FIOCRUZ), Cidade Universitária, Recife, PE 50670-420, Brazil
| | - André de Lima Aires
- Department of Tropical Medicine, Health Sciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil
| | - Iranildo José da Cruz Filho
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil
| | - Maria do Carmo Alves de Lima
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco (UFPE), Avenida Prof. Moraes Rego, s/n, Cidade Universitária, Recife, PE 50740-600, Brazil
| |
Collapse
|
2
|
Silva DVSPD, Nascimento PHDB, Rocha JVRD, Marques DSC, Brayner FA, Alves LC, Araújo HDAD, Cruz Filho IJD, Albuquerque MCPDA, Lima MDCAD, Aires ADL. In vitro activity, ultrastructural analysis and in silico pharmacokinetic properties (ADMET) of thiazole compounds against adult worms of Schistosoma mansoni. Acta Trop 2023; 245:106965. [PMID: 37295486 DOI: 10.1016/j.actatropica.2023.106965] [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: 04/12/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/12/2023]
Abstract
The present work aimed to carry out in vitro biological assays of thiazole compounds against adult worms of Schistosoma mansoni, as well as the in silico determination of pharmacokinetic parameters to predict the oral bioavailability of these compounds. In addition to presenting moderate to low cytotoxicity against mammalian cells, thiazole compounds are not considered hemolytic. All compounds were initially tested at concentrations ranging from 200 to 6.25 μM against adult worms of S. mansoni parasites. The results showed the best activity of PBT2 and PBT5 at a concentration of 200 μM, which caused 100% mortality after 3 h of incubation. While at 6 h of exposure, 100% mortality was observed at the concentration of 100 µM. Subsequent studies with these same compounds allowed classifying PBT5, PBT2, PBT6 and PBT3 compounds, which were considered active and PBT1 and PBT4 compounds, which were considered inactive. In the ultrastructural analysis the compounds PBT2 and PBT5 (200 µM) promoted integumentary changes with exposure of the muscles, formation of integumentary blisters, integuments with abnormal morphology and destruction of tubercles and spicules. Therefore, the compounds PBT2 and PBT5 are promising antiparasitics against S. mansoni.
Collapse
Affiliation(s)
| | - Pedro Henrique do Bomfim Nascimento
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | - João Victor Ritinto da Rocha
- Centro de Ciências Médicas - Programa de Pós-graduação em Medicina Tropical, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Diego Santa Clara Marques
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | - Fábio André Brayner
- Departamento de Parasitologia, Instituto Aggeu Magalhães, Avenida Prof. Moraes Rego, 1235, Cidade Universitária. CEP 50670-901, Recife, PE, Brazil; Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil
| | - Luiz Carlos Alves
- Departamento de Parasitologia, Instituto Aggeu Magalhães, Avenida Prof. Moraes Rego, 1235, Cidade Universitária. CEP 50670-901, Recife, PE, Brazil; Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil
| | - Hallysson Douglas Andrade de Araújo
- Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil; Departamento de Bioquímica. Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | - Iranildo José da Cruz Filho
- Centro de Biociências, Programa de Pós-graduação em Morfotecnologia, Universidade Federal de Pernambuco, Recife, Brazil; Departamento de Antibióticos, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50.670-901, Recife, PE, Brazil
| | | | - Maria do Carmo Alves de Lima
- Departamento de Parasitologia, Instituto Aggeu Magalhães, Avenida Prof. Moraes Rego, 1235, Cidade Universitária. CEP 50670-901, Recife, PE, Brazil
| | - André de Lima Aires
- Centro de Biociências, Programa de Pós-graduação em Morfotecnologia, Universidade Federal de Pernambuco, Recife, Brazil; Centro de Ciências Médicas - Programa de Pós-graduação em Medicina Tropical, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil; Instituto Keizo Asami - iLIKA, UFPE, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, CEP 50670-901, Recife-PE, Brazil.
| |
Collapse
|
3
|
Côrte-Real L, Pósa V, Martins M, Colucas R, May NV, Fontrodona X, Romero I, Mendes F, Pinto Reis C, Gaspar MM, Pessoa JC, Enyedy ÉA, Correia I. Cu(II) and Zn(II) Complexes of New 8-Hydroxyquinoline Schiff Bases: Investigating Their Structure, Solution Speciation, and Anticancer Potential. Inorg Chem 2023. [PMID: 37441730 PMCID: PMC10369496 DOI: 10.1021/acs.inorgchem.3c01066] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
We report the synthesis and characterization of three novel Schiff bases (L1-L3) derived from the condensation of 2-carbaldehyde-8-hydroxyquinoline with amines containing morpholine or piperidine moieties. These were reacted with CuCl2 and ZnCl2 yielding six new coordination compounds, with the general formula ML2, where M = Cu(II) or Zn(II) and L = L1-L3, which were all characterized by analytical, spectroscopic (Fourier transform infrared (FTIR), UV-visible absorption, nuclear magnetic resonance (NMR), or electron paramagnetic resonance (EPR)), and mass spectrometric techniques, as well as by single-crystal X-ray diffraction. In the solid state, two Cu(II) complexes, with L1 and L2, are obtained as dinuclear compounds, with relatively short Cu-Cu distances (3.146 and 3.171 Å for Cu2(L1)4 and Cu2(L2)4, respectively). The free ligands show moderate lipophilicity, while their complexes are more lipophilic. The pKa values of L1-L3 and formation constants of the complex (for ML and ML2) species were determined by spectrophotometric titrations, with the Cu(II) complexes showing higher stability than the Zn(II) complexes. EPR indicated the presence of several species in solution as pH varied and binding modes were proposed. The binding of the complexes to bovine serum albumin (BSA) was evaluated by fluorescence and circular dichroism (CD) spectroscopies. All complexes bind BSA, and as demonstrated by CD, the process takes several hours to reach equilibrium. The antiproliferative activity was evaluated in malignant melanoma cells (A375) and in noncancerous keratinocytes (HaCaT). All complexes display significant cytotoxicity (IC50 < 10 μM) but modest selectivity. The complexes show higher activity than the free ligands, the Cu(II) complexes being more active than the Zn(II) complexes, and approximately twice more cytotoxic than cisplatin. A Guava ViaCount assay corroborated the antiproliferative activity.
Collapse
Affiliation(s)
- Leonor Côrte-Real
- Centro de Química Estrutural, Institute of Molecular Sciences, and Department of Chemical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Vivien Pósa
- MTA-SZTE Lendület Functional Metal Complexes Research Group, Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary
| | - Matilde Martins
- Centro de Química Estrutural, Institute of Molecular Sciences, and Department of Chemical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Raquel Colucas
- Centro de Química Estrutural, Institute of Molecular Sciences, and Department of Chemical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Nóra V May
- Centre for Structural Science, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar Tudósok krt. 2, H-1117 Budapest, Hungary
| | - Xavier Fontrodona
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares and Department of Nuclear Sciences and Engineering, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km139,7), 2695-066 Bobadela LRS, Portugal
| | - Catarina Pinto Reis
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
- Instituto de Biofísica e Engenharia Biomédica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Maria Manuela Gaspar
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural, Institute of Molecular Sciences, and Department of Chemical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Éva A Enyedy
- MTA-SZTE Lendület Functional Metal Complexes Research Group, Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary
| | - Isabel Correia
- Centro de Química Estrutural, Institute of Molecular Sciences, and Department of Chemical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
| |
Collapse
|
4
|
Research Progress on the Biological Activities of Metal Complexes Bearing Polycyclic Aromatic Hydrazones. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238393. [PMID: 36500482 PMCID: PMC9739244 DOI: 10.3390/molecules27238393] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/19/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022]
Abstract
Due to the abundant and promising biological activities of aromatic hydrazones, it is of great significance to study the biological activities of their metal complexes for the research and development of metal-based drugs. In this review, we focus on the metal complexes of polycyclic aromatic hydrazones, which still do not receive much attention, and summarize the studies related to their biological activities. Although the large number of metal complexes in phenylhydrazone prevent them all from being summarized, the significant value of polycyclic aromatic hydrocarbons themselves (such as naphthalene and anthracene) as pharmacophores are also considered. Therefore, the bioactivities of the metal complexes of naphthylhydrazone and anthrahydrazone are focused on, and the recent research progress on the metal complexes of anthrahydrazone by the authors is also included. In terms of biological activities, these complexes mainly show antibacterial and anticancer activities, along with less bioactivities. The present review demonstrates that the structural design and bioactivities of these complexes are fundamental, which also indicates a certain structure-activity relationship (SAR) in some substructural areas. However, a systematic and comprehensive conclusion of the SAR is still not available, which suggests that more attention should be paid to the bioactivities of the metal complexes of polycyclic aromatic hydrazones since their potential in structural design and biological activity remains to be explored. We hope that this review will attract more researchers to devote their interest and energy into this promising area.
Collapse
|
5
|
Zarroug R, Artetxe B, Ayed B, López X, Ribeiro N, Correia I, Pessoa JC. New phosphotetradecavanadate hybrids: crystal structure, DFT analysis, stability and binding interactions with bio-macromolecules. Dalton Trans 2022; 51:8303-8317. [PMID: 35583072 DOI: 10.1039/d2dt00690a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Two novel bicapped Keggin polyoxidovanadates with organic cations, (C6H8N)5[H4PV14O42]·5H2O (1) and (C6H14N4)2(NH4)[H4PV14O42]·11H2O (2), (PV14O426- = PV14, C6H7N = 3-picoline and C6H12N4 = methenamine) were synthesized. These compounds were isolated and characterized in the solid state and in solution by elemental analysis, powder X-ray diffraction, FTIR, UV-vis, 51V, 31P, 13C and 1H NMR, and fluorescence spectroscopy. Further confirmation of the PV14 structures was obtained by single-crystal X-ray diffraction studies of 1 and 2. The Hirshfeld surface analysis was performed to confirm that within the intermolecular interactions occurring in the two crystals, the O⋯H/H⋯O, O⋯O and H⋯H interactions dominate. The protonation and one-electron reduction of the PV14 moiety were also analysed by means of DFT calculations; besides confirming the protonation sites and correctly predicting the pKa values, the DFT results also indicate that molecular reduction is energetically more favourable in protonated PV14 anions. Upon the addition of PV14 anions to bovine serum albumin (BSA) up to a ratio of 1 : 1, the fluorescence decreased by 45% for both 1 and 2, indicating that the interaction of vanadium-containing species with this protein takes place; log(KSV) values of ca. 5.5 were obtained in both systems. Upon the addition of 1 or 2 to solutions of calf-thymus DNA (ctDNA), changes were observed in the UV-vis absorption and circular dichroism spectra. The significance of the changes observed is discussed considering the several V-containing species that form in the solution.
Collapse
Affiliation(s)
- Rim Zarroug
- University of Monastir, Laboratory of Physico-Chemistry of Materials LR01ES19, Faculty of Sciences of Monastir, Tunisia.,Department of Chemistry, Faculty of Sciences, University of Gabes, Tunisia
| | - Beñat Artetxe
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, 48080 Bilbao, Spain
| | - Brahim Ayed
- University of Monastir, Laboratory of Physico-Chemistry of Materials LR01ES19, Faculty of Sciences of Monastir, Tunisia
| | - Xavier López
- Universitat Rovira i Virgili, Departament de Química Física i Inorgànica, c/Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Nádia Ribeiro
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Isabel Correia
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - João Costa Pessoa
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| |
Collapse
|
6
|
Ramilo-Gomes F, Addis Y, Tekamo I, Cavaco I, Campos DL, Pavan FR, Gomes CSB, Brito V, Santos AO, Domingues F, Luís Â, Marques MM, Pessoa JC, Ferreira S, Silvestre S, Correia I. Antimicrobial and antitumor activity of S-methyl dithiocarbazate Schiff base zinc(II) complexes. J Inorg Biochem 2020; 216:111331. [PMID: 33348167 DOI: 10.1016/j.jinorgbio.2020.111331] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/23/2020] [Accepted: 12/04/2020] [Indexed: 01/12/2023]
Abstract
Schiff bases (SB) obtained from S-methyl dithiocarbazate and aromatic aldehydes: salicylaldehyde (H2L1), o-vanillin (H2L2), pyridoxal (H2L3) and 2,6-diformyl-4-methylphenol (H3L4), and their corresponding Zn(II)-complexes (1-4), are synthesized. All compounds are characterized by elemental analyses, infrared, UV-Vis, nuclear magnetic resonance spectroscopy and mass spectrometry. The structures of H2L2 and [Zn2(L1)2(H2O)(DMF)] (1a) (DMF = dimethylformamide) are solved by single crystal X-ray diffraction. The SB coordinates the metal center through the Ophenolate, Nimine and Sthiolate atoms. The radical scavenging activity is tested using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, with all ligand precursors showing IC50 values ~40 μM. Cytotoxicity studies with several tumor cell lines (PC-3, MCF-7 and Caco-2) as well as a non-tumoral cell line (NHDF) are reported. Interestingly, 1 has relevant and selective antiproliferative effect against Caco-2 cells (IC50 = 9.1 μM). Their antimicrobial activity is evaluated in five bacterial strains (Klebsiella pneumoniae, Acinetobacter baumannii, Listeria monocytogenes, Pseudomonas aeruginosa and Staphylococcus aureus) and two yeast strains (Candida albicans and Candida tropicalis) with some compounds showing bacteriostatic and fungicidal activity. The minimal inhibitory concentration (MIC90) of HnL against Mycobacterium tuberculosis is also reported, with H2L2 and H3L4 showing very high activity (MIC90 < 0.6 μg/mL). The ability of the compounds to bind bovine serum albumin (BSA) and DNA is evaluated for H3L4 and [Zn2(L4)(CH3COO)] (4), both showing high binding constants to BSA (ca. 106 M-1) and ability to bind DNA. Overall, the reported compounds show relevant antitumor and antimicrobial properties, our data indicating they may be promising compounds in several fields of medicinal chemistry.
Collapse
Affiliation(s)
- Filipa Ramilo-Gomes
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal
| | - Yemataw Addis
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Departamento de Química e Farmácia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Israel Tekamo
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Departamento de Química e Farmácia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Isabel Cavaco
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Departamento de Química e Farmácia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Débora L Campos
- Faculdade de Ciências Farmacêuticas, UNESP, C.P.582, Araraquara, SP 14801-902, Brazil
| | - Fernando R Pavan
- Faculdade de Ciências Farmacêuticas, UNESP, C.P.582, Araraquara, SP 14801-902, Brazil
| | - Clara S B Gomes
- LAQV-REQUIMTE - Laboratório Associado para a Química Verde, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Monte de Caparica, Portugal; Applied Molecular Biosciences Unit - UCIBIO, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Monte de Caparica, Portugal
| | - Vanessa Brito
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Adriana O Santos
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Fernanda Domingues
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ângelo Luís
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - M Matilde Marques
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Susana Ferreira
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Samuel Silvestre
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal.
| | - Isabel Correia
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| |
Collapse
|
7
|
Kusakiewicz-Dawid A, Porada M, Dziuk B, Siodłak D. Annular Tautomerism of 3(5)-Disubstituted-1 H-pyrazoles with Ester and Amide Groups. Molecules 2019; 24:E2632. [PMID: 31330976 PMCID: PMC6680591 DOI: 10.3390/molecules24142632] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 07/16/2019] [Accepted: 07/17/2019] [Indexed: 11/16/2022] Open
Abstract
A series of disubstituted 1H-pyrazoles with methyl (1), amino (2), and nitro (3) groups, as well as ester (a) or amide (b) groups in positions 3 and 5 was synthesized, and annular tautomerism was investigated using X-ray, theoretical calculations, NMR, and FT-IR methods. The X-ray experiment in the crystal state showed for the compounds with methyl (1a, 1b) and amino (2b) groups the tautomer with ester or amide groups at position 3 (tautomer 3), but for those with a nitro group (3b, 4), tautomer 5. Similar results were obtained in solution by NMR NOE experiments in CDCl3, DMSO-d6, and CD3OD solvents. However, tautomer equilibrium was observed for 2b in DMSO. The FT-IR spectra in chloroform and acetonitrile showed equilibria, which can be ascribed to conformational changes of the cis/trans arrangement of the ester/amide group and pyrazole ring. Theoretical analysis using the M06-2X/6-311++G(d,p) method (in vacuo, chloroform, acetonitrile, and water) and measurement of aromaticity (NICS) showed dependence on internal hydrogen bonds, the influence of the environment, and the effect of the substituent. These factors, pyrazole aromaticity and intra- and inter-molecular interactions, seem to have a considerable influence on the choice of tautomer.
Collapse
Affiliation(s)
| | - Monika Porada
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Błażej Dziuk
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Dawid Siodłak
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland.
| |
Collapse
|
8
|
Ribeiro N, Galvão AM, Gomes CSB, Ramos H, Pinheiro R, Saraiva L, Ntungwe E, Isca V, Rijo P, Cavaco I, Ramilo-Gomes F, Guedes RC, Pessoa JC, Correia I. Naphthoylhydrazones: coordination to metal ions and biological screening. NEW J CHEM 2019. [DOI: 10.1039/c9nj01816f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
VIVO, CuII and ZnII complexes from three new naphthoylhydrazones were screened towards their ability to bind albumin and their cytotoxicity.
Collapse
|
9
|
Matos CP, Yildizhan Y, Adiguzel Z, Pavan FR, Campos DL, Pessoa JC, Ferreira LP, Tomaz AI, Correia I, Acilan C. New ternary iron(iii) aminobisphenolate hydroxyquinoline complexes as potential therapeutic agents. Dalton Trans 2019; 48:8702-8716. [DOI: 10.1039/c9dt01193e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Fe(iii)-Aminobisphenolate hydroxyquinoline complexes are active anticancer drug candidates in the low micromolar range, displaying apoptosis as the mode of cell death.
Collapse
Affiliation(s)
- Cristina P. Matos
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | - Yasemin Yildizhan
- TUBITAK
- Marmara Research Center
- Genetic Engineering and Biotechnology Institute
- Gebze/Kocaeli
- Turkey
| | - Zelal Adiguzel
- TUBITAK
- Marmara Research Center
- Genetic Engineering and Biotechnology Institute
- Gebze/Kocaeli
- Turkey
| | | | | | - João Costa Pessoa
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | | | - Ana Isabel Tomaz
- Centro de Química Estrutural
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisbon
- Portugal
| | - Isabel Correia
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | | |
Collapse
|