Search Results - "Heleno, Vladimir C.G."

Antimicrobial activity of terpenoids from Copaifera langsdorffii Desf. against cariogenic bacteria by Souza, Ariana B, Martins, Carlos H.G, Souza, Maria G.M, Furtado, Niege A.J.C, Heleno, Vladimir C.G, de Sousa, João P.B, Rocha, Erilda M.P, Bastos, Jairo K, Cunha, Wilson R, Veneziani, Rodrigo C.S, Ambrósio, Sérgio R

“…In the present work, the anticariogenic activities of nine labdane type-diterpenes and four sesquiterpenes were investigated. Among these metabolites,…”
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Complete 1H and 13C NMR structural assignments for five semi-synthetic eremantholides by Sass, Daiane C., Ferreira, Alexsandro E., Vieira, Gabrielle, Rezende, Ana Laura M., Kovatch, Pedro Y., Palaretti, Vinícius, Constantino, Mauricio G., Heleno, Vladimir C.G.

“…[Display omitted] •Complete NMR assignment of semi-synthetic eremantholides.•Total clarification of hydrogen NMR signals: multiplicity and J values.•Original…”
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Electrospray ionization tandem mass spectrometry of labdane‐type acid diterpenes by Aguiar, Gabriela P., Crevelin, Eduardo J., Dias, Herbert J., Ambrósio, Sérgio R., Bastos, Jairo K., Heleno, Vladimir C. G., Vessecchi, Ricardo, Crotti, Antônio E. M.

“…Copaifera (Leguminoseae) species produce a commercially interesting oleoresin that displays several biological activities, including antimicrobial and…”
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Methyl and p‑Bromobenzyl Esters of Hydrogenated Kaurenoic Acid for Controlling Anthracnose in Common Bean Plants by Mota, Suellen F, Oliveira, Denilson F, Heleno, Vladimir C. G, Soares, Ana Carolina F, Midiwo, Jacob O, Souza, Elaine A

“…Kaurenoic acid derivatives were prepared and submitted to in vitro assays with the fungus Colletotrichum lindemuthianum, which causes anthracnose disease in…”
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In vitro anti-trypanosomal potential of kaurane and pimarane semi-synthetic derivatives by Rocha, Ana Carolina F. S., Morais, Gustavo O., da Silva, Marcela M., Kovatch, Pedro Y., Ferreira, Daniele S., Esperandim, Viviane R., Pagotti, Mariana C., Magalhães, Lizandra G., Heleno, Vladimir C. G.

“…As part of the search for anti-trypanosomal agents, this work presents the production of sixteen derivatives. All of them were obtained from two natural…”
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Antimicrobial evaluation of diterpenes from Copaifera langsdorffii oleoresin against periodontal anaerobic bacteria by Souza, Ariana B, de Souza, Maria G M, Moreira, Maísa A, Moreira, Monique R, Furtado, Niege A J C, Martins, Carlos H G, Bastos, Jairo K, dos Santos, Raquel A, Heleno, Vladimir C G, Ambrosio, Sergio Ricardo, Veneziani, Rodrigo C S

“…The antimicrobial activity of four labdane-type diterpenes isolated from the oleoresin of Copaifera langsdorffii as well as of two commercially available…”
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Isolation and detailed 1H and 13C NMR structural assignment for three trachylobanes from Psiadia punctulata (Asteraceae) grown in Africa by Ferreira, Alexsandro E., Rocha, Ana Carolina F.S., Pavan, Julian C.S., Palaretti, Vinícius, Oliveira, Thaís A.S., Midiwo, Jacob O., Crotti, Antonio E.M., Heleno, Vladimir C.G.

“…[Display omitted] •New NMR data for three trachylobanes, are presented for the first time in Literature.•The presented data completely clarified the 1H and 13C…”
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Antimicrobial Potential of Natural and Semi-Synthetic ent-Kaurane and ent-Pimarane Diterpenes against Clinically Isolated Gram-Positive Multidrug-Resistant Bacteria by Soares, Ana Carolina, Matos, Priscilla, da Silva, Karime, Martins, Carlos, Veneziani, Rodrigo, Ambrósio, Sérgio, Dias, Herbert, dos Santos, Raquel, Heleno, Vladimir

“…In this work, a search for antimicrobial agents against multi-drug resistant (MDR) bacteria was undertaken. It involved two natural diterpenes of different…”
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Evaluation of Lignans from Piper cubeba against Schistosoma mansoni Adult Worms: A Combined Experimental and Theoretical Study by Parreira, Renato L. T., Costa, Eveline S., Heleno, Vladimir C. G., Magalhães, Lizandra G., Souza, Julia M., Pauletti, Patrícia M., Cunha, Wilson R., Januário, Ana H., Símaro, Guilherme V., Bastos, Jairo K., Laurentiz, Rosangela S., Kar, Tapas, Caramori, Giovanni F., Kawano, Daniel Fábio, Andrade e Silva, Márcio L.

“…Six dibenzylbutyrolactonic lignans ((−)‐hinokinin (1), (−)‐cubebin (2), (−)‐yatein (3), (−)‐5‐methoxyyatein (4), dihydrocubebin (5) and dihydroclusin (6)) were…”
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Chemical Composition and Antimicrobial Activity of the Essential Oil of Artemisia absinthium Asteraceae Leaves by Vieira, Tatiana M., Dias, Herbert J., Medeiros, Talita C.T., Grundmann, Carlismari O., Groppo, Milton, Heleno, Vladimir C. G., Martins, Carlos H.G., Cunha, Wilson R., Crotti, Antônio E. M., Silva, Eliane O.

“…This study reports on the chemical composition and antimicrobial activity of the essential oil from Artemisia absinthium L. leaves AA EO collected in Brazil…”
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Antitubercular Activity Increase in Labdane Diterpenes from Copaifera Oleoresin through Structural Modification by Silva, Aline, Soares, Ana Carolina, Cabral, Mirela, de Andrade, Alex, da Silva, Marilza, Martins, Carlos, Veneziani, Rodrigo, Ambrósio, Sérgio, Bastos, Jairo, Heleno, Vladimir

“…The labdane diterpenes copalic acid, 3β-acetoxy-copalic acid, 3β-hydroxy-copalic acid and ent-agathic acid were isolated from Copaifera langsdorffii oleoresin…”
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New Non-Toxic Semi-Synthetic Derivatives from Natural Diterpenes Displaying Anti-Tuberculosis Activity by Matos, Priscilla M, Mahoney, Brian, Chan, Yohan, Day, David P, Cabral, Mirela M W, Martins, Carlos H G, Santos, Raquel A, Bastos, Jairo K, Page, Philip C Bulman, Heleno, Vladimir C G

“…We report herein the synthesis of six diterpene derivatives, three of which are new, generated through known organic chemistry reactions that allowed…”
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Pimarane-type diterpenes: antimicrobial activity against oral pathogens by Porto, Thiago S, Rangel, Rander, Furtado, Niege A J C, de Carvalho, Tatiane C, Martins, Carlos H G, Veneziani, Rodrigo C S, Da Costa, Fernando B, Vinholis, Adriana H C, Cunha, Wilson R, Heleno, Vladimir C G, Ambrosio, Sergio R

“…Seven pimarane type-diterpenes re-isolated from Viguiera arenaria Baker and two semi-synthetic pimarane derivatives were evaluated in vitro against the…”
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Antimicrobial activity of diterpenes from Viguiera arenaria against endodontic bacteria by Carvalho, Tatiane C, Simão, Marília R, Ambrósio, Sérgio R, Furtado, Niege A J C, Veneziani, Rodrigo C S, Heleno, Vladimir C G, Da Costa, Fernando B, Gomes, Brenda P F A, Souza, Maria Gorete M, Borges dos Reis, Erika, Martins, Carlos H G

“…Six pimarane-type diterpenes isolated from Viguiera arenaria Baker and two semi-synthetic derivatives were evaluated in vitro against a panel of representative…”
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Selectivity in reduction of natural furanoheliangolides with Stryker's reagent by Sass, Daiane C, Heleno, Vladimir C G, Morais, Gustavo O, Lopes, João L C, Lopes, Norberto P, Constantino, Mauricio G

“…Reduction of the natural sesquiterpene lactones furanoheliangolides with Stryker's reagent is an effective process for producing eremantholides through a…”
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Study of Anti-Tuberculosis Activity Behaviour of Natural Kaurane and Trachylobane Diterpenes Compared with Structural Properties Obtained by Theoretical Calculations by Soares, Ana C F, Cabral, Mirela M W, Martins, Carlos H G, Ferreira, Alexsandro E, Bergamo, Pedro A S, Omosa, Leonida K, Midiwo, Jacob O, Parreira, Renato L T, Heleno, Vladimir C G

“…A set of seven diterpenes, three kauranes and four trachylobanes, isolated from the African plant Psiadia punctulata were assayed against Mycobacterium…”
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Evaluation of ent-kaurenoic acid derivatives for their anticariogenic activity by de Andrade, Bruna B, Moreira, Monique R, Ambrosio, Sérgio R, Furtado, Niege A J C, Cunha, Wilson R, Heleno, Vladimir C G, Silva, Aline N, Simão, Marília R, da Rocha, Erilda M P, Martins, Carlos H G, Veneziani, Rodrigo C S

“…Ent-kaur-16(17)-en-19-oic acid (kaurenoic acid, KA) is a tetracyclic diterpene prototype for natural anticaries agents. Six KA derivatives were prepared and…”
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Antimicrobial ent-pimarane diterpenes from Viguiera arenaria against Gram-positive bacteria by Porto, Thiago Souza, Furtado, Niege A.J.C., Heleno, Vladimir C.G., Martins, Carlos H.G., Da Costa, Fernando B., Severiano, Marcela E., Silva, Aline N., Veneziani, Rodrigo C.S., Ambrósio, Sérgio R.

“…The dichloromethane crude extract from the roots of Viguiera arenaria (VaDRE) has been employed in an antimicrobial screening against several bacteria…”
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