1
|
da Silva MJV, Jacomini AP, Figueiredo MC, Back DF, Foglio MA, Ruiz ALTG, Paula FR, Rosa FA. Efficient synthesis and antitumor evaluation of 4-aminomethyl-N-arylpyrazoles: Discovery of potent and selective agents for ovarian cancer. Bioorg Med Chem 2020; 29:115835. [PMID: 33214037 DOI: 10.1016/j.bmc.2020.115835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 09/14/2020] [Accepted: 10/28/2020] [Indexed: 02/07/2023]
Abstract
A new one-pot two-step sequential methodology for synthesis of novel 3-carboxyethyl 4-[(tert-butylamino)methyl]-N-arylpyrazole derivatives is reported. One-pot transformation of β-enamino diketones and arylhydrazines generated 4-iminium-N-arylpyrazole salt intermediates in situ, which were easily transformed into 4-[(tert-butylamino)methyl]-N-arylpyrazole derivatives by NaBH3CN. The products could be isolated in the free or hydrochloride salt forms. Also, it was possible to obtain the products in the zwitterionic form by ester group hydrolysis. Furthermore, all synthesised compounds were evaluated in vitro against a panel of eight human tumor cell lines. The 4-[(tert-butylamino)methyl]-N-arylpyrazole derivatives were much more powerful than the hydrochloride and zwitterionic forms. Moreover, the results suggest that the N-aryl group at the pyrazole ring is vital for modulating antiproliferative activity. The 3-carboxyethyl 4-[(tert-butylamino)methyl]-N-phenylpyrazoles 3a-g exhibited higher inhibitory activities against OVCAR-3, with GI50 values of 0.013-8.78 μM, and lower inhibitory activities against normal human cell lines. Molecular docking was performed to evaluate the probable binding mode of 3a into active site of CDK2.
Collapse
Affiliation(s)
- Michael J V da Silva
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Andrey P Jacomini
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Mariana C Figueiredo
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), 13083-859 Campinas, SP, Brazil
| | - Davi F Back
- Departamento de Química, Universidade Federal de Santa Maria (UFSM), 97110-970 Santa Maria, RS, Brazil
| | - Mary A Foglio
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), 13083-859 Campinas, SP, Brazil
| | - Ana L T G Ruiz
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), 13083-859 Campinas, SP, Brazil; Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas (CPQBA), Universidade Estadual de Campinas, 13083-970 Campinas, SP, Brazil
| | - Fávero R Paula
- Departamento de Farmácia, Universidade Federal do Pampa (UNIPAMPA), 97500-970 Uruguaiana, RS, Brazil
| | - Fernanda A Rosa
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil.
| |
Collapse
|
2
|
Poletto J, da Silva MJV, Jacomini AP, Bidóia DL, Volpato H, Nakamura CV, Rosa FA. Antiparasitic activities of novel pyrimidine N-acylhydrazone hybrids. Drug Dev Res 2020; 82:230-240. [PMID: 32996619 DOI: 10.1002/ddr.21745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/04/2020] [Accepted: 09/18/2020] [Indexed: 11/09/2022]
Abstract
In this article, a series of 29 new pyrimidine N-acylhydrazone hybrids were synthesized and evaluated in vitro against Leishmania amazonensis and Trypanosoma cruzi protozoa that cause the neglected diseases cutaneous leishmaniasis and Chagas disease, respectively. Eight of the target compounds showed significant antiprotozoal activities with IC50 values in 4.3-33.6 μM range. The more active compound 4f exhibited selectivity index greater than 15 and drug-like properties based on Lipinski's rule.
Collapse
Affiliation(s)
- Julia Poletto
- Departamento de Química, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| | - Michael J V da Silva
- Departamento de Química, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| | - Andrey P Jacomini
- Departamento de Química, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| | - Danielle L Bidóia
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| | - Hélito Volpato
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| | - Celso Vataru Nakamura
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| | - Fernanda A Rosa
- Departamento de Química, Universidade Estadual de Maringá (UEM), Maringá, Brazil
| |
Collapse
|
3
|
Gonçalves DS, de S Melo SM, Jacomini AP, J V da Silva M, Pianoski KE, Ames FQ, Aguiar RP, Oliveira AF, Volpato H, Bidóia DL, Nakamura CV, Bersani-Amado CA, Back DF, Moura S, Paula FR, Rosa FA. Synthesis of novel 3,5,6-trisubstituted 2-pyridone derivatives and evaluation for their anti-inflammatory activity. Bioorg Med Chem 2020; 28:115549. [PMID: 32503692 DOI: 10.1016/j.bmc.2020.115549] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/26/2020] [Accepted: 05/05/2020] [Indexed: 11/19/2022]
Abstract
The inflammatory response is the reaction of living tissue to an injury of a foreign nature, such as infection and irritants, and occurs as part of the body's natural defence response. Compounds capable of inhibiting cyclooxygenase (COX) enzymes, especially COX-2, have great potential as anti-inflammatory agents. Herein we present the regioselective synthesis of 49 novel compounds based on the 2-pyridone nucleus. The topical anti-inflammatory activity of seventeen compounds was evaluated in mice by croton oil (CO) induced ear edema assay. Most of the compounds exhibited a high level of in vivo anti-inflammatory activity, reducing ear edema and myeloperoxidase (MPO) activity. The most active compounds (2a and 7a) were inhibitors of COX enzymes. Compound 2a selectively inhibited the COX-2, while 7a was nonselective. Further, the compound 2a showed effective binding at the active site of COX-2 co-crystal by docking molecular study.
Collapse
Affiliation(s)
- Davana S Gonçalves
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Samara M de S Melo
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Andrey P Jacomini
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Michael J V da Silva
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Karlos E Pianoski
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Franciele Q Ames
- Departamento de Farmacologia e Terapêutica, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Rafael P Aguiar
- Departamento de Farmacologia e Terapêutica, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Alisson Felipe Oliveira
- Departamento de Farmácia, Universidade Federal do Pampa (UNIPAMPA), 97500-970 Uruguaiana, RS, Brazil
| | - Hélito Volpato
- Pós-Graduação em Ciências Biológicas, Universidade Estadual de Maringá (UEM), 87020-900 Maringá, PR, Brazil
| | - Danielle L Bidóia
- Pós-Graduação em Ciências Biológicas, Universidade Estadual de Maringá (UEM), 87020-900 Maringá, PR, Brazil
| | - Celso V Nakamura
- Pós-Graduação em Ciências Biológicas, Universidade Estadual de Maringá (UEM), 87020-900 Maringá, PR, Brazil
| | - Ciomar A Bersani-Amado
- Departamento de Farmacologia e Terapêutica, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Davi F Back
- Departamento de Química, Universidade Federal de Santa Maria (UFSM), 97110-970 Santa Maria, RS, Brazil
| | - Sidnei Moura
- Instituto de Biotecnologia, Universidade de Caxias do Sul (UCS), 295070-560 Caxias do Sul, RS, Brazil
| | - Fávero R Paula
- Departamento de Farmácia, Universidade Federal do Pampa (UNIPAMPA), 97500-970 Uruguaiana, RS, Brazil
| | - Fernanda A Rosa
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil.
| |
Collapse
|
4
|
Scariot DB, Volpato H, Fernandes NS, Lazarin-Bidóia D, Borges O, Sousa MDC, Rosa FA, Jacomini AP, Silva SO, Ueda-Nakamura T, Rubira AF, Nakamura CV. Oral treatment with T6-loaded yeast cell wall particles reduces the parasitemia in murine visceral leishmaniasis model. Sci Rep 2019; 9:20080. [PMID: 31882925 PMCID: PMC6934808 DOI: 10.1038/s41598-019-56647-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 12/16/2019] [Indexed: 01/28/2023] Open
Abstract
Yeast cell wall particles isolated from Saccharomyces cerevisiae (scYCWPs) have a rich constitution of β-glucan derived from the cell wall. After removing intracellular contents, β-glucan molecules are readily recognized by dectin-1 receptors, present on the cytoplasmic membrane surface of the mononuclear phagocytic cells and internalized. Leishmania spp. are obligate intracellular parasites; macrophages are its primary host cells. An experimental murine model of visceral leishmaniasis caused by L. infantum was used to evaluate the antileishmanial activity of oral administration of these particles. A low-water soluble thiophene previously studied in vitro against L. infantum was entrapped into scYCWPs to direct it into the host cell, in order to circumvent the typical pharmacokinetic problems of water-insoluble compounds. We found that scYCWPs + T6 reduced the parasitic burden in the liver and spleen. There was an increase in IFN-γ levels related to nitric oxide production, explaining the reduction of the L. infantum burden in the tissue. Histological analysis did not show signals of tissue inflammation and biochemical analysis from plasma did not indicate signals of cytotoxicity after scYCWPs + T6 treatment. These findings suggested that scYCWPs + T6 administered through oral route reduced the parasitic burden without causing toxic effects, satisfying requirements for development of new strategies to treat leishmaniasis.
Collapse
Affiliation(s)
- Débora B Scariot
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, State University of Maringá, Maringa, 87020-900, Brazil
| | - Hélito Volpato
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, State University of Maringá, Maringa, 87020-900, Brazil
| | - Nilma S Fernandes
- Cellular Biology Graduate Program, State University of Maringá, Maringa, 87020-900, Brazil
| | - Danielle Lazarin-Bidóia
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, State University of Maringá, Maringa, 87020-900, Brazil
| | - Olga Borges
- Faculty of Pharmacy, University of Coimbra, Coimbra, 3000-548, Portugal
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, 3000-548, Portugal
| | - Maria do Céu Sousa
- Faculty of Pharmacy, University of Coimbra, Coimbra, 3000-548, Portugal
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, 3000-548, Portugal
| | - Fernanda A Rosa
- Chemistry Department, State University of Maringá, Maringa, 87020-900, Brazil
| | - Andrey P Jacomini
- Chemistry Department, State University of Maringá, Maringa, 87020-900, Brazil
| | - Sueli O Silva
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, State University of Maringá, Maringa, 87020-900, Brazil
| | - Tânia Ueda-Nakamura
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, State University of Maringá, Maringa, 87020-900, Brazil
| | - Adley F Rubira
- Chemistry Department, State University of Maringá, Maringa, 87020-900, Brazil
| | - Celso V Nakamura
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, State University of Maringá, Maringa, 87020-900, Brazil.
| |
Collapse
|
5
|
Poletto J, Ribeiro GM, da Silva MJV, Jacomini AP, Basso EA, Back DF, Moura S, Rosa FA. One-Pot Highly Regioselective Synthesis of α-Ketoamide N-Arylpyrazoles from Secondary β-Enamino Diketones. Org Lett 2019; 21:6325-6328. [DOI: 10.1021/acs.orglett.9b02206] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julia Poletto
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Gessica M. Ribeiro
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Michael J. V. da Silva
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Andrey P. Jacomini
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Ernani A. Basso
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Davi F. Back
- Departamento de Química, Universidade Federal de Santa Maria (UFSM), 97110-970 Santa Maria, RS, Brazil
| | - Sidnei Moura
- Instituto de Biotecnologia, Universidade de Caxias do Sul (UCS), 295070-560 Caxias do Sul, RS, Brazil
| | - Fernanda A. Rosa
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| |
Collapse
|
6
|
Silva RGM, da Silva MJV, Jacomini AP, Moura S, Back DF, Basso EA, Rosa FA. Development of methodologies for the regioselective synthesis of four series of regioisomer isoxazoles from β-enamino diketones. RSC Adv 2018; 8:4773-4778. [PMID: 35539545 PMCID: PMC9077875 DOI: 10.1039/c7ra13343j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/20/2018] [Indexed: 12/19/2022] Open
Abstract
Four methodologies are reported for the regioselective synthesis of four series of regioisomer isoxazoles from cyclocondensation of β-enamino diketones and hydroxylamine hydrochloride. Regiochemical control was achieved by varying reaction conditions and substrate structure. The mild reaction conditions used to access 4,5-disubstituted, 3,4-disubtituted, and 3,4,5-trisubstituted regioisomer isoxazoles, as well as the pharmacological and synthetic potential of the products, make these novel methodologies very powerful. Efficient and regioselective synthesis of isoxazoles was demonstrated through cyclocondensation of β-enamino diketones with hydroxylamine: four of the six possible regioisomers were obtained.![]()
Collapse
Affiliation(s)
- Raí G. M. Silva
- Departamento de Química
- Universidade Estadual de Maringá (UEM)
- Brazil
| | | | | | - Sidnei Moura
- Laboratório de Produtos Naturais e Sintéticos
- Instituto de Biotecnologia
- Universidade de Caxias do Sul (UCS)
- Caxias do Sul
- Brazil
| | - Davi F. Back
- Departamento de Química
- Universidade Federal de Santa Maria (UFSM)
- Santa Maria
- Brazil
| | - Ernani A. Basso
- Departamento de Química
- Universidade Estadual de Maringá (UEM)
- Brazil
| | - Fernanda A. Rosa
- Departamento de Química
- Universidade Estadual de Maringá (UEM)
- Brazil
| |
Collapse
|
7
|
da Silva MJV, Poletto J, Jacomini AP, Pianoski KE, Gonçalves DS, Ribeiro GM, de S. Melo SM, Back DF, Moura S, Rosa FA. Unconventional Method for Synthesis of 3-Carboxyethyl-4-formyl(hydroxy)-5-aryl-N-arylpyrazoles. J Org Chem 2017; 82:12590-12602. [DOI: 10.1021/acs.joc.7b02361] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J. V. da Silva
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Julia Poletto
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Andrey P. Jacomini
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Karlos E. Pianoski
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Davana S. Gonçalves
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Gessica M. Ribeiro
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Samara M. de S. Melo
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| | - Davi F. Back
- Departamento
de Química, Universidade Federal de Santa Maria (UFSM), 97110-970 Santa Maria, RS, Brazil
| | - Sidnei Moura
- Instituto
de Biotecnologia, Universidade de Caxias do Sul (UCS), 295070-560 Caxias do Sul, RS, Brazil
| | - Fernanda A. Rosa
- Departamento
de Química, Universidade Estadual de Maringá (UEM), 87030-900 Maringá, PR, Brazil
| |
Collapse
|
8
|
Souza TF, Silva MJV, Silva RGM, Gonçalves DS, Simon PA, Jacomini AP, Basso EA, Moura S, Martins MAP, Back DF, Rosa FA. Regiochemical Control of Pyrazoles by Solvent and β-Enamino Diketone Structure: Regioselective Synthesis of 4,5-Disubstituted N
-Phenylpyrazoles. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thiago F. Souza
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Michael J. V. Silva
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Raí G. M. Silva
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Davana S. Gonçalves
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Paula A. Simon
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Andrey P. Jacomini
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Ernani A. Basso
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Sidnei Moura
- Laboratório de Produtos Naturais e Sintéticos, Instituto de Biotecnologia; Universidade de Caxias do Sul (UCS); 95070-560 Caxias do Sul RS Brazil
| | - Marcos A. P. Martins
- Departamento de Química; Universidade Federal de Santa Maria (UFSM); 97110-970 Santa Maria, RS Brazil
| | - Davi F. Back
- Departamento de Química; Universidade Federal de Santa Maria (UFSM); 97110-970 Santa Maria, RS Brazil
| | - Fernanda A. Rosa
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| |
Collapse
|
9
|
Jacomini AP, Silva MJV, Silva RGM, Gonçalves DS, Volpato H, Basso EA, Paula FR, Nakamura CV, Sarragiotto MH, Rosa FA. Synthesis and evaluation against Leishmania amazonensis of novel pyrazolo[3,4-d]pyridazinone-N-acylhydrazone-(bi)thiophene hybrids. Eur J Med Chem 2016; 124:340-349. [PMID: 27597410 DOI: 10.1016/j.ejmech.2016.08.048] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/19/2016] [Accepted: 08/22/2016] [Indexed: 11/26/2022]
Abstract
A new series of pyrazolo[3,4-d]pyridazin-7-one derivatives were synthesised and evaluated for their in vitro antileishmanial activity against Leishmania amazonensis promastigote and axenic amastigote forms. The results showed that the pyrazolo[3,4-d]-pyridazin-7-one-N-acylhydrazone-(bi)thiophene hybrids 5b, 6b and 6d exhibit better antileishmanial activity with IC50 84.96, 3.63 and 10.79 μM, against the promastigote form and IC50 32.71, 2.32 and >100 μM against the axenic amastigote form, respectively. The active compounds had their cytotoxicity tested against macrophages and fibroblast cells with a higher selectivity index than 10 for compounds 6b and 6d. Molecular docking studies were performed for all active compounds using the enzyme trypanothione reductase (TR) to investigate a possible action mechanism. The results suggested that active compounds had interactions with the residues of amino acids Gly 13, Thr 51, Thr 160, Gly 161, Tyr 198, Arg 287, Asp 327, Thr 335, which may inhibit the enzyme TR.
Collapse
Affiliation(s)
- Andrey P Jacomini
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | - Michael J V Silva
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | - Raí G M Silva
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | - Davana S Gonçalves
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | - Hélito Volpato
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | - Ernani A Basso
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | - Fávero R Paula
- Departamento de Farmácia, Universidade Federal do Pampa (UNIPAMPA), 97500-970, Uruguaiana, RS, Brazil
| | - Celso V Nakamura
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil
| | | | - Fernanda A Rosa
- Departamento de Química, Universidade Estadual de Maringá (UEM), 87020-900, Maringá, PR, Brazil.
| |
Collapse
|