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Vieira TM, Barco JG, Paula LAL, Felix PCA, Bastos JK, Magalhães LG, Crotti AEM. In vitro Evaluation of the Antileishmanial and Antischistosomal Activities of p-Coumaric Acid Prenylated Derivatives. Chem Biodivers 2024; 21:e202400491. [PMID: 38470945 DOI: 10.1002/cbdv.202400491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/14/2024]
Abstract
We have evaluated eight p-coumaric acid prenylated derivatives in vitro for their antileishmanial activity against Leishmania amazonensis promastigotes and their antischistosomal activity against Schistosoma mansoni adult worms. Compound 7 ((E)-3,4-diprenyl-4-isoprenyloxycinnamic alcohol) was the most active against L. amazonensis (IC50=45.92 μM) and S. mansoni (IC50=64.25 μM). Data indicated that the number of prenyl groups, the presence of hydroxyl at C9, and a single bond between C7 and C8 are important structural features for the antileishmanial activity of p-coumaric acid prenylated derivatives.
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Affiliation(s)
- Tatiana M Vieira
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Júlia G Barco
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Lucas A L Paula
- Research Center in Exact and Technological Sciences, University of Franca, 14404-600, Franca, SP, Brazil
| | - Paulo C A Felix
- Research Center in Exact and Technological Sciences, University of Franca, 14404-600, Franca, SP, Brazil
| | - Jairo K Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, 14040-903, Ribeirão Preto, SP, Brazil
| | - Lizandra G Magalhães
- Research Center in Exact and Technological Sciences, University of Franca, 14404-600, Franca, SP, Brazil
| | - Antônio E M Crotti
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
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Pagotti MC, Dias HJ, Candido ACBB, Oliveira TAS, Borges A, Oliveira ND, Lopes CD, Orenha RP, Parreira RLT, Crotti AEM, Magalhães LG. Exploring Synthetic Dihydrobenzofuran and Benzofuran Neolignans as Antiprotozoal Agents against Trypanosoma cruzi. Pharmaceutics 2023; 15:pharmaceutics15030754. [PMID: 36986617 PMCID: PMC10052957 DOI: 10.3390/pharmaceutics15030754] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/18/2023] [Accepted: 02/20/2023] [Indexed: 03/30/2023] Open
Abstract
Chagas disease is a neglected tropical disease that affects more than 8 million people. Although there are therapies against this disease, the search for new drugs is important because the current treatments show limited effectiveness and high toxicity. In this work, eighteen dihydrobenzofuran-type neolignans (DBNs) and two benzofuran-type neolignans (BNs) were synthesized and evaluated against amastigote forms of two Trypanosoma cruzi strains. The in vitro cytotoxicity and hemolytic activity of the most active compounds were also evaluated and their relationships with T. cruzi tubulin DBNs were investigated by an in silico approach. Four DBNs demonstrated activity against the T. cruzi Tulahuen lac-Z strain (IC50 from 7.96 to 21.12 µM), and DBN 1 exhibited the highest activity against the amastigote forms of the T. cruzi Y strain (IC50 3.26 μM). Compounds 1-4 showed CC50 values higher than antitrypanosomal activities, except for DBN 3. All DBNs with antitrypanosomal activity demonstrated CH50 higher than 100 µM. The in silico results indicated that DBNs 1, 2, and 4 are capable of destabilizing the dynamics of the tubulin-microtubule from the vinca site. These compounds displayed promising in vitro activity against T. cruzi, especially compound 1, and can be considered molecular prototypes for the development of new antiparasitic drugs.
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Affiliation(s)
- Mariana C Pagotti
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca 14404-600, SP, Brazil
| | - Herbert J Dias
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil
- Goiano Federal Institute of Education, Science, and Technology, Campus Urutaí, Urutaí 75790-000, GO, Brazil
| | - Ana Carolina B B Candido
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca 14404-600, SP, Brazil
| | - Thaís A S Oliveira
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil
| | - Alexandre Borges
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca 14404-600, SP, Brazil
- Faculty of Medicine, University Center of Santa Fe do Sul, Santa Fé do Sul 15775-000, SP, Brazil
| | - Nicoli D Oliveira
- Animal Science Post Graduation, University of Franca, Franca 14404-600, SP, Brazil
| | - Carla D Lopes
- Department of Biochemistry and Immunology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
| | - Renato P Orenha
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca 14404-600, SP, Brazil
| | - Renato L T Parreira
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca 14404-600, SP, Brazil
| | - Antônio E M Crotti
- Department of Chemistry, Faculty of Philosophy, Sciences and Letters, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil
| | - Lizandra G Magalhães
- Research Group on Natural Products, Center for Research in Sciences and Technology, University of Franca, Franca 14404-600, SP, Brazil
- Animal Science Post Graduation, University of Franca, Franca 14404-600, SP, Brazil
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Cardoso FJB, Xavier LP, Santos AV, Pereira HD, Santos LDS, Molfetta FAD. Identification of potential inhibitors of Schistosoma mansoni purine nucleoside phosphorylase from neolignan compounds using molecular modelling approaches. J Biomol Struct Dyn 2021; 40:8248-8260. [PMID: 33830889 DOI: 10.1080/07391102.2021.1910073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Schistosomiasis is a parasitic disease that is part of the neglected tropical diseases (NTDs), which cause significant levels of morbidity and mortality in millions of people throughout the world. The enzyme purine nucleoside phosphorylase from Schistosoma mansoni (SmPNP) represents a potential target for discovering new agents, and neolignans stand out as an important class of compounds. In this work, molecular modeling studies and biological assays of a set of neolignans were conducted against the PNP enzymes of the parasite and the human homologue (HssPNP). The results of the molecular docking described that the neolignans showed good complementarity by the active site of SmPNP. Molecular dynamics (MD) studies revealed that both complexes (Sm/HssPNP - neolignan compounds) were stable by analyzing the root mean square deviation (RMSD) values, and the binding free energy values suggest that the selected structures can interact and inhibit the catalytic activity of the SmPNP. Finally, the biological assay indicated that the selected neolignans presented a better molecular profile of inhibition compared to the human enzyme, as these ligands did not have the capacity to inhibit enzymatic activity, indicating that these compounds are promising candidates and that they can be used in future research in chemotherapy for schistosomiasis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Fábio José Bonfim Cardoso
- Laboratório de Modelagem Molecular, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Luciana Pereira Xavier
- Laboratório de Biotecnologia de Enzimas e Biotransformação, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém-PA, Brazil
| | - Agenor Valadares Santos
- Laboratório de Biotecnologia de Enzimas e Biotransformação, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém-PA, Brazil
| | - Humberto D'Muniz Pereira
- Laboratório de Biologia Estrutural, Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos-SP, Brazil
| | - Lourivaldo da Silva Santos
- Laboratório de Síntese e Produtos Naturais, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém-PA, Brazil
| | - Fábio Alberto de Molfetta
- Laboratório de Modelagem Molecular, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Pará, Brazil
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Dias HJ, Crevelin EJ, Palaretti V, Vessecchi R, Crotti AEM. Electrospray ionization tandem mass spectrometry of deprotonated dihydrobenzofuran neolignans. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e8990. [PMID: 33119941 DOI: 10.1002/rcm.8990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/21/2020] [Accepted: 10/24/2020] [Indexed: 06/11/2023]
Abstract
RATIONALE Although dihydrobenzofuran neolignans (DBNs) display a wide diversity of biological activities, the identification of their in vivo metabolites using liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) remains a challenge to be overcome. Recently, ESI-MS/MS data of protonated DBNs have been reported, but they were shown to be limited due to the scarcity of diagnostic ions. METHODS The gas-phase fragmentation pathways of a series of biologically active synthetic benzofuran neolignans (BNs) and DBNs were elucidated by means of negative ESI accurate-mass tandem and sequential mass spectrometry, and thermochemical data estimated using computational chemistry and the B3LYP/6-31+G(d,p) model. RESULTS Deprotonated DBNs produced more diagnostic product ions than the corresponding protonated molecules. Moreover, a series of odd-electron product ions (radical anions) were detected, which has not been reported for protonated DBNs. Direct C2 H3 O2 • elimination from the precursor ion (deprotonated molecule) only occurred for the BNs and can help to distinguish these compounds from the DBNs. The mechanism through which the [M - H - CH3 OH]- ion is formed is strongly dependent on specific structural features. CONCLUSIONS The negative ion mode provides much more information than the positive ion mode (at least one diagnostic product ion was detected for all the analyzed compounds) and does not require the use of additives to produce the precursor ions (deprotonated molecules).
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Affiliation(s)
- Herbert J Dias
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Eduardo J Crevelin
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Vinicius Palaretti
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Ricardo Vessecchi
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Antônio E M Crotti
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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Lahive CW, Kamer PCJ, Lancefield CS, Deuss PJ. An Introduction to Model Compounds of Lignin Linking Motifs; Synthesis and Selection Considerations for Reactivity Studies. CHEMSUSCHEM 2020; 13:4238-4265. [PMID: 32510817 PMCID: PMC7540175 DOI: 10.1002/cssc.202000989] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Indexed: 05/31/2023]
Abstract
The development of fundamentally new valorization strategies for lignin plays a vital role in unlocking the true potential of lignocellulosic biomass as sustainable and economically compatible renewable carbon feedstock. In particular, new catalytic modification and depolymerization strategies are required. Progress in this field, past and future, relies for a large part on the application of synthetic model compounds that reduce the complexity of working with the lignin biopolymer. This aids the development of catalytic methodologies and in-depth mechanistic studies and guides structural characterization studies in the lignin field. However, due to the volume of literature and the piecemeal publication of methodology, the choice of suitable lignin model compounds is far from straight forward, especially for those outside the field and lacking a background in organic synthesis. For example, in catalytic depolymerization studies, a balance between synthetic effort and fidelity compared to the actual lignin of interest needs to be found. In this Review, we provide a broad overview of the model compounds available to study the chemistry of the main native linking motifs typically found in lignins from woody biomass, the synthetic routes and effort required to access them, and discuss to what extent these represent actual lignin structures. This overview can aid researchers in their selection of the most suitable lignin model systems for the development of emerging lignin modification and depolymerization technologies, maximizing their chances of successfully developing novel lignin valorization strategies.
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Affiliation(s)
- Ciaran W. Lahive
- Department of Chemical Engineering (ENTEG)University of GroningenNijenborgh 49747 AGGroningenNetherlands
- School of Chemistry and Biomedical Science Research ComplexUniversity of St. Andrews and EaStCHEMNorth HaughSt. AndrewsFifeKY16 9STUnited Kingdom
| | - Paul C. J. Kamer
- School of Chemistry and Biomedical Science Research ComplexUniversity of St. Andrews and EaStCHEMNorth HaughSt. AndrewsFifeKY16 9STUnited Kingdom
- Leibniz-Institut für Katalyse e.V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Christopher S. Lancefield
- School of Chemistry and Biomedical Science Research ComplexUniversity of St. Andrews and EaStCHEMNorth HaughSt. AndrewsFifeKY16 9STUnited Kingdom
| | - Peter J. Deuss
- Department of Chemical Engineering (ENTEG)University of GroningenNijenborgh 49747 AGGroningenNetherlands
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Dziwornu GA, Attram HD, Gachuhi S, Chibale K. Chemotherapy for human schistosomiasis: how far have we come? What's new? Where do we go from here? RSC Med Chem 2020; 11:455-490. [PMID: 33479649 PMCID: PMC7593896 DOI: 10.1039/d0md00062k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/22/2020] [Indexed: 01/11/2023] Open
Abstract
Globally, schistosomiasis threatens more than 700 million lives, mostly children, in poor localities of tropical and sub-tropical areas with morbidity due to acute and chronic pathological manifestations of the disease. After a century since the first antimonial-based drugs were introduced to treat the disease, anti-schistosomiasis drug development is again at a bottleneck with only one drug, praziquantel, available for treatment purposes. This review focuses on promising chemotypes as potential starting points in a drug discovery effort to meet the urgent need for new schistosomicides.
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Affiliation(s)
- Godwin Akpeko Dziwornu
- Department of Chemistry , University of Cape Town , Rondebosch 7701 , South Africa . ; Tel: +27 21 6502553
| | - Henrietta Dede Attram
- Department of Chemistry , University of Cape Town , Rondebosch 7701 , South Africa . ; Tel: +27 21 6502553
| | - Samuel Gachuhi
- Department of Chemistry , University of Cape Town , Rondebosch 7701 , South Africa . ; Tel: +27 21 6502553
| | - Kelly Chibale
- Department of Chemistry , University of Cape Town , Rondebosch 7701 , South Africa . ; Tel: +27 21 6502553
- Drug Discovery and Development Centre (H3D) , University of Cape Town , Rondebosch 7701 , South Africa
- Institute of Infectious Disease and Molecular Medicine , University of Cape Town , Rondebosch 7701 , South Africa
- South African Medical Research Council Drug Discovery and Development Research Unit , University of Cape Town , Rondebosch 7701 , South Africa
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Hu Z, Silipo A, Li W, Molinaro A, Yu B. Synthesis of Forsythenethoside A, a Neuroprotective Macrocyclic Phenylethanoid Glycoside, and NMR Analysis of Conformers. J Org Chem 2019; 84:13733-13743. [DOI: 10.1021/acs.joc.9b01956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhifei Hu
- School of Physical Science and Technology, ShanghaiTech University, 393 Huaxia Middle Road, Shanghai 201210, China
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Napoli, Italy
| | - Wei Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Department of Medicinal Chemistry, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Napoli, Italy
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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Nagumo M, Ninomiya M, Oshima N, Itoh T, Tanaka K, Nishina A, Koketsu M. Comparative analysis of stilbene and benzofuran neolignan derivatives as acetylcholinesterase inhibitors with neuroprotective and anti-inflammatory activities. Bioorg Med Chem Lett 2019; 29:2475-2479. [DOI: 10.1016/j.bmcl.2019.07.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/12/2019] [Accepted: 07/16/2019] [Indexed: 12/16/2022]
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Islam M, Khan A, Shehzad MT, Hameed A, Ahmed N, Halim SA, Khiat M, Anwar MU, Hussain J, Csuk R, Shafiq Z, Al-Harrasi A. Synthesis and characterization of new thiosemicarbazones, as potent urease inhibitors: In vitro and in silico studies. Bioorg Chem 2019; 87:155-162. [DOI: 10.1016/j.bioorg.2019.03.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/23/2019] [Accepted: 03/04/2019] [Indexed: 01/25/2023]
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Dias HJ, Baguenard M, Crevelin EJ, Palaretti V, Gates PJ, Vessecchi R, Crotti AEM. Gas-phase fragmentation reactions of protonated benzofuran- and dihydrobenzofuran-type neolignans investigated by accurate-mass electrospray ionization tandem mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:35-46. [PMID: 30362641 DOI: 10.1002/jms.4304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/12/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
Abstract
We have investigated gas-phase fragmentation reactions of protonated benzofuran neolignans (BNs) and dihydrobenzofuran neolignans (DBNs) by accurate-mass electrospray ionization tandem and multiple-stage (MSn ) mass spectrometry combined with thermochemical data estimated by Computational Chemistry. Most of the protonated compounds fragment into product ions B ([M + H-MeOH]+ ), C ([B-MeOH]+ ), D ([C-CO]+ ), and E ([D-CO]+ ) upon collision-induced dissociation (CID). However, we identified a series of diagnostic ions and associated them with specific structural features. In the case of compounds displaying an acetoxy group at C-4, product ion C produces diagnostic ions K ([C-C2 H2 O]+ ), L ([K-CO]+ ), and P ([L-CO]+ ). Formation of product ions H ([D-H2 O]+ ) and M ([H-CO]+ ) is associated with the hydroxyl group at C-3 and C-3', whereas product ions N ([D-MeOH]+ ) and O ([N-MeOH]+ ) indicate a methoxyl group at the same positions. Finally, product ions F ([A-C2 H2 O]+ ), Q ([A-C3 H6 O2 ]+ ), I ([A-C6 H6 O]+ ), and J ([I-MeOH]+ ) for DBNs and product ion G ([B-C2 H2 O]+ ) for BNs diagnose a saturated bond between C-7' and C-8'. We used these structure-fragmentation relationships in combination with deuterium exchange experiments, MSn data, and Computational Chemistry to elucidate the gas-phase fragmentation pathways of these compounds. These results could help to elucidate DBN and BN metabolites in in vivo and in vitro studies on the basis of electrospray ionization ESI-CID-MS/MS data only.
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Affiliation(s)
- Herbert J Dias
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Manon Baguenard
- Institut de Chimie, Université de Poitiers, Poitiers, France
| | - Eduardo J Crevelin
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vinicius Palaretti
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Paul J Gates
- School of Chemistry, University of Bristol, Bristol, UK
| | - Ricardo Vessecchi
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Antônio E M Crotti
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
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Gemma S, Federico S, Brogi S, Brindisi M, Butini S, Campiani G. Dealing with schistosomiasis: Current drug discovery strategies. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 2019. [DOI: 10.1016/bs.armc.2019.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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