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Souza JADM, Gubiani JR, de Siqueira KA, de Camargo MJ, Garcez WS, de Sousa PT, Soares MA, Araújo ÂR, Nunes EVDS, Vieira LCC, Sampaio OM, Goulart LS, Biasetto CR, de Menezes OT, de Oliveira CM, Nogueira CR, Pinto LDS, Teles HL. Antimicrobial metabolites produced by endophytic fungi associated with the leaves of Vochysia divergens. Nat Prod Res 2024; 38:978-985. [PMID: 37154616 DOI: 10.1080/14786419.2023.2208723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/26/2022] [Accepted: 04/25/2023] [Indexed: 05/10/2023]
Abstract
Investigation of the endophytic fungi Nigrospora sphaerica, Nigrospora oryzae, and Pseudofusicoccum stromaticum MeOH fractions isolated from the leaves of Vochysia divergens, a medicinal species from the Brazilian Pantanal, led to the identification of five compounds, namely a new compound (1E,8Z)-10,11-dihydroxy-5,5,8-trimethyl-4-oxocycloundeca-1,8-diene-1-carbaldehyde (1) and four known compounds: 5-methylmellein (2), sclerone (3), daldinone A (4), and lasiodiplodin (5). All compounds were identified using spectroscopic methods, and 1 was corroborated with mass spectrometry, while the known compounds were compared with data in the literature. The relative configuration of compound 1 was determined based on theoretical conformational studies as well as the J experimental values between the hydroxymethyne hydrogens. The antimicrobial activity of the compounds was evaluated. Promising results were obtained for compounds 2, 4, and 5 since they inhibited the bacterium Pseudomonas aeruginosa, an opportunistic pathogen, suggesting the potential of these microorganisms as a source of new antibacterial agents.
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Affiliation(s)
| | - Juliana R Gubiani
- Institute of Chemistry of São Carlos, São Paulo University, São Carlos, Brazil
| | | | | | - Walmir S Garcez
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Paulo T de Sousa
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Marcos A Soares
- Institute of Biosciences, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Ângela R Araújo
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Emanuel V Dos S Nunes
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Lucas C C Vieira
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Olívia M Sampaio
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Letícia S Goulart
- Faculty of Health Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
| | - Carolina R Biasetto
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Orivaldo T de Menezes
- Institute of Exact Sciences and Technology, Federal University of Amazonas, Itacoatiara, Brazil
| | - Camila M de Oliveira
- Institute of Exact and Natural Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
| | - Cláudio R Nogueira
- Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, Brazil
| | - Luciano da S Pinto
- Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil
| | - Helder L Teles
- Institute of Exact and Natural Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
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Filho EGRT, Dall’Oglio EL, de Sousa PT, Ribeiro F, Marques MZ, de Vasconcelos LG, de Amorim MPN, Kuhnen CA. Solketal production in microwave monomode batch reactor: the role of dielectric properties in glycerol ketalization with acetone. Braz J Chem Eng 2022. [DOI: 10.1007/s43153-021-00206-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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R de Novais LM, Ferreira LF, de Sousa PT, Ribeiro TAN, Jacinto MJ, Dos Santos CHC, de Carvalho MG, Torquato HFV, Paredes-Gamero EJ, Silva VCP. Eglerisine, a Novel Sesquiterpenoid Tropolone from Dulacia egleri with Antiproliferative Effect against an Acute Myeloid Leukemia Lineage. Planta Med 2020; 86:55-60. [PMID: 31622995 DOI: 10.1055/a-1021-0611] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chemical investigation of the stems of Dulacia egleri resulted in the isolation of eglerisine (1: ), a compound with a rare sesquiterpenoid tropolone skeleton. Its structure was determined by analysis of spectrometric and spectroscopic data, including HRESIMS, 1D, and 2D NMR. The antiproliferative effects of eglerisine were tested in human leukemia lineages. In the Kasumi-1 lineage, an acute myeloid leukemia cell line, eglerisine reduced cell metabolism, as determined by the resazurin assay. Eglerisine did not induce cell death by either apoptotic or necrotic mechanisms. However, a reduction of the absolute number of cells was observed. Eglerisine induced cell cycle arrest after 72 h of treatment by phosphorylation of H2AX histone, reducing the S phase and increasing the G2 phase of the cell cycle.
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Affiliation(s)
- Leice M R de Novais
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Luiz F Ferreira
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Paulo T de Sousa
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Tereza A N Ribeiro
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Marcos J Jacinto
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
| | - Carlos H C Dos Santos
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | - Mário G de Carvalho
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | - Heron F V Torquato
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Faculdade de Farmácia, Braz Cubas Educação, Mogi das Cruzes, SP, Brazil
| | - Edgar J Paredes-Gamero
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição (FACFAN), Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Virgínia C P Silva
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil
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Parizotto CA, Dall'Oglio EL, de Vasconcelos LG, de Sousa PT, Taques Filho EGR, Kuhnen CA. Measuring dielectric properties for microwave-assisted extraction of essential oils using single-mode and multimode reactors. RSC Adv 2019; 9:5259-5269. [PMID: 35515916 PMCID: PMC9060669 DOI: 10.1039/c8ra08727j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 10/21/2018] [Accepted: 12/28/2018] [Indexed: 11/21/2022] Open
Abstract
The dielectric properties of Cymbopogon nardus, Eucalyptus sp., Piper aduncum and Piper hispidinervum were investigated as a function of frequency and temperature, using dry plant matter and its mixtures with water at different concentrations. This was followed by the extraction of essential oils performed with microwave heating in single-mode and multimode cavities with a variable power 6.0 kW generator operating at 2.45 GHz. The dielectric properties of the dry plant matter changed markedly with increasing water content, exhibiting high loss factors and small penetration depths. Due to the high level of absorption, even with low water contents, microwave-assisted extraction (MAE) showed better green performance employing lower plant matter/water ratios (1 : 2 or 1 : 4) and applying shorter extraction times compared with conventional hydrodistillation (HD). Using the single-mode MAE reactor, in the case of Cymbopogon nardus, for a plant matter/water ratio of 1 : 4 the energy efficiency was 1.78 g kW−1 h−1, applying 0.3 kW for 16.7 min. By way of comparison, for the same extraction time using HD, the corresponding efficiency was only 0.50 g kW−1 h−1. In experiments with citronella using multimode MAE, the best energy efficiency of 2.53 g kW−1 h−1 was obtained with a plant matter/water ratio of 1 : 2 applying 1.8 kW of power for 30 min. Single and multimode MAE experiments showed optimum conditions with lower water content. Thus, greater amounts of material can be processed in a shorter time, in accordance with the ideals of a green chemistry. The resulting extractions showed an energy efficiency up to 27 times greater compared with conventional HD, applying the same extraction time. Dielectric properties of plants/water mixtures enables the design of single mode cavities for microwave assisted extraction of essentials oils.![]()
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Affiliation(s)
- Carlos A Parizotto
- Departamento de Química, Universidade Federal do Mato Grosso Av. Fernando Corrêa da Costa s/n, Coxipó Cuiabá MT CEP 78090-600 Brazil +55 65 36158799 +55 65 36158798
| | - Evandro L Dall'Oglio
- Departamento de Química, Universidade Federal do Mato Grosso Av. Fernando Corrêa da Costa s/n, Coxipó Cuiabá MT CEP 78090-600 Brazil +55 65 36158799 +55 65 36158798
| | - Leonardo G de Vasconcelos
- Departamento de Química, Universidade Federal do Mato Grosso Av. Fernando Corrêa da Costa s/n, Coxipó Cuiabá MT CEP 78090-600 Brazil +55 65 36158799 +55 65 36158798
| | - Paulo T de Sousa
- Departamento de Química, Universidade Federal do Mato Grosso Av. Fernando Corrêa da Costa s/n, Coxipó Cuiabá MT CEP 78090-600 Brazil +55 65 36158799 +55 65 36158798
| | - Eduardo G R Taques Filho
- Departamento de Química, Universidade Federal do Mato Grosso Av. Fernando Corrêa da Costa s/n, Coxipó Cuiabá MT CEP 78090-600 Brazil +55 65 36158799 +55 65 36158798
| | - Carlos Alberto Kuhnen
- Departamento de Física, Universidade Federal do Santa Catarina, Campus Universitário Trindade Florianópolis SC CEP 88040-970 Brazil
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Abstract
In this study, a quantum approach is presented to explain microwave-enhanced reaction rates by considering the tunneling effects in chemical reactions. In the Arrhenius equation, the part of the Hamiltonian relative to the interaction energy during tunneling, between the particle that tunnels and the electrical field defined in the medium, whose spatial component is specified by its rms value, is taken into account. An approximate evaluation of the interaction energy leads to a linear dependence of the effective activation energy on the applied field. The evaluation of the rms value of the field for pure liquids and reaction mixtures, through their known dielectric properties, leads to an appreciable reduction in the activation energies for the proton transfer process in these liquids. The results indicate the need to move toward the use of more refined methods of modern quantum chemistry to calculate more accurately field-induced reaction rates and effective activation energies.
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Affiliation(s)
- Carlos A Kuhnen
- Departamento de Física, Universidade Federal do Santa Catarina ; Campus Universitário Trindade, Florianópolis, SC, CEP 88040-970, Brazil.,Departamento de Química, Universidade Federal do Mato Grosso , Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT CEP 78090-600, Brazil
| | - Evandro L Dall'Oglio
- Departamento de Química, Universidade Federal do Mato Grosso , Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT CEP 78090-600, Brazil
| | - Paulo T de Sousa
- Departamento de Química, Universidade Federal do Mato Grosso , Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT CEP 78090-600, Brazil
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Vitek R, de Novais LMR, Torquato HFV, Paredes-Gamero EJ, de Carvalho MG, de Sousa PT, Jacinto MJ, da Silva VC. Chemical constituents and antileukemic activity of Eugenia dysenterica. Nat Prod Res 2016; 31:1930-1934. [DOI: 10.1080/14786419.2016.1261343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Renan Vitek
- Programa de Pós-Graduação em Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Leice M. R. de Novais
- Programa de Pós-Graduação em Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Heron F. V. Torquato
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Edgar J. Paredes-Gamero
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo, Brazil
- Centro Interdisciplinar de Investigação Bioquı́mica, Universidade de Mogi das Cruzes, Mogi das Cruzes, Brazil
| | - Mário G. de Carvalho
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Paulo T. de Sousa
- Programa de Pós-Graduação em Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Marcos J. Jacinto
- Programa de Pós-Graduação em Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Virgínia C. da Silva
- Programa de Pós-Graduação em Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
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Dos S Beirigo PJ, Torquato HFV, Dos Santos CHC, Carvalho MGD, Castro RN, Paredes-Gamero EJ, de Sousa PT, Jacinto MJ, da Silva VC. [1-8-NαC]-Zanriorb A1, a Proapoptotic Orbitide from Leaves of Zanthoxylum riedelianum. J Nat Prod 2016; 79:1454-8. [PMID: 27082849 DOI: 10.1021/acs.jnatprod.5b00177] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A new orbitide named [1-8-NαC]-zanriorb A1 (1) was isolated and characterized from the leaves of Zanthoxylum riedelianum using NMR and mass spectrometry. The absolute configuration of the amino acids was determined using Marfey's method on the acid hydrolysates. Compound 1 induced cell death by apoptosis in Jurkat leukemia T cells (IC50 218 nM).
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Affiliation(s)
- Pâmela J Dos S Beirigo
- Departamento de Química, Universidade Federal de Mato Grosso , Cuiabá, MT 78060-900, Brazil
| | - Heron F V Torquato
- Departamento de Bioquímica, Universidade Federal de São Paulo , São Paulo, SP 04039-032, Brazil
| | - Carlos H C Dos Santos
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro , Seropédica, RJ 23890-000, Brazil
| | - Mário G de Carvalho
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro , Seropédica, RJ 23890-000, Brazil
| | - Rosane N Castro
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro , Seropédica, RJ 23890-000, Brazil
| | - Edgar J Paredes-Gamero
- Departamento de Bioquímica, Universidade Federal de São Paulo , São Paulo, SP 04039-032, Brazil
| | - Paulo T de Sousa
- Departamento de Química, Universidade Federal de Mato Grosso , Cuiabá, MT 78060-900, Brazil
| | - Marcos J Jacinto
- Departamento de Química, Universidade Federal de Mato Grosso , Cuiabá, MT 78060-900, Brazil
| | - Virgínia C da Silva
- Departamento de Química, Universidade Federal de Mato Grosso , Cuiabá, MT 78060-900, Brazil
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L. Dall'Oglio E, T. de Sousa P, Gomes de Vasconcelos L, Adriano Parizotto C, Ferreira Barros E, Alberto Kuhnen C. Monitoring of Microwave-Assisted Acid-Catalyzed Transesterification for Biodiesel Production Using FT-NIR Spectroscopy with Continuous-Flow Cell. CMIC 2015. [DOI: 10.2174/2213335602666150706181936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dall’Oglio EL, de Sousa PT, Campos DC, Gomes de Vasconcelos L, da Silva AC, Ribeiro F, Rodrigues V, Kuhnen CA. Measurement of Dielectric Properties and Microwave-Assisted Homogeneous Acid-Catalyzed Transesterification in a Monomode Reactor. J Phys Chem A 2015; 119:8971-80. [DOI: 10.1021/acs.jpca.5b04890] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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)
- Evandro L. Dall’Oglio
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Paulo T. de Sousa
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Deibnasser C. Campos
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Leonardo Gomes de Vasconcelos
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Alan Cândido da Silva
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Fabilene Ribeiro
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Vaniomar Rodrigues
- Departamento de
Química, Universidade Federal do Mato Grosso
, Av. Fernando
Corrêa da Costa s/n, Coxipó,
Cuiabá-MT
CEP 78090-600, Brazil
| | - Carlos Alberto Kuhnen
- Departamento de Física, Universidade Federal do Santa Catarina
, Campus Universitário Trindade, Florianópolis-SC
CEP 88040-970, Brazil
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