Search Results - "Oliveira, Brás H."

Preparation of betulinic acid derivatives by chemical and biotransformation methods and determination of cytotoxicity against selected cancer cell lines by Baratto, Leopoldo C., Porsani, Mariana V., Pimentel, Ida C., Pereira Netto, Adaucto B., Paschke, Reinhard, Oliveira, Brás H.

“…Several novel 2,4-dinitrophenylhydrazone betulinic acid derivatives have been prepared by chemical and biotransformation methods using fungi and carrot cells…”
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Biotransformation of betulinic and betulonic acids by fungi by Bastos, Denise Z.L., Pimentel, Ida C., de Jesus, Daniel A., de Oliveira, Brás H.

“…The biotransformation of betulinic (R = OH) and betulonic acid (R = O) by Arthrobotrys sp., Colletotrichum sp., Chaetophoma sp. and Dematium sp. oxidized the…”
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HPLC/DAD determination of rosmarinic acid in Salvia officinalis: sample preparation optimization by factorial design by Oliveira, Karina B. de, Oliveira, Brás H. de

“…Sage (Salvia officinalis) contains high amounts of the biologically active rosmarinic acid (RA) and other polyphenolic compounds. RA is easily oxidized, and…”
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Enzymatic modification of stevioside by cell-free extract of Gibberella fujikuroi by de Oliveira, Brás H., Packer, Janaina F., Chimelli, Márcio, de Jesus, Daniel A.

“…Stevioside is a natural sweetener obtained from the leaves of Stevia rebaudiana. It is a glycoside of steviol and other glycosides of the same aglycone are…”
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rac-2-[(2-Chloro-phen-yl)(4-chloro-phen-yl)meth-yl]-1,3-dioxolane by Maluf, Daniela F, Dos Santos, Sailer S, Gatto, Claudia C, de Oliveira, Brás H

“…The title compound, C(16)H(14)Cl(2)O(2), is a chiral mitotane derivative that contains a dioxolane ring and crystallizes from methanol as a racemic mixture. It…”
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Eupafolin: Effect on mitochondrial energetic metabolism by Herrerias, Tatiana, de Oliveira, Brás H., Gomes, Maria A.B., de Oliveira, Maria B.M., Carnieri, Eva G.S., Cadena, Sílvia M.S.C., Martinez, Glaucia R., Rocha, Maria E.M.

“…In this study the effects of eupafolin (6-methoxy 5,7,3′,4′-tetrahydroxyflavone), a flavone extracted from dry leaves of Eupatorium litoralle, on mitochondrial…”
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Gibberellic acid production by solid-state fermentation in coffee husk by Machado, C.M.M, Soccol, C.R, Oliveira, B.H. de, Pandey, A

“…Five strains of Gibberella fujikuroi and one of Fusarium moniliforme were screened for the production of gibberellic acid (GA3) in coffee husk, and based on…”
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Determination of the triterpenoid, betulinic acid, in Doliocarpus schottianus by HPLC by Oliveira, Brás H. de, Santos, Cid A. M., Espíndola, Ana Paula D. M.

“…The isolation, detection and quantification of betulinic acid in Doliocarpus schottianus are described. The isolation from the plant extract was made by column…”
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Activity of isosteviol lactone on mitochondrial metabolism by Braguini, Welligton L., Gomes, Maria A.Biazon, de Oliveira, Brás H., Carnieri, Eva G.S., Rocha, Maria Eliane M., de Oliveira, Maria Benigna M.

“…Isosteviol lactone (LAC), a lactone derivative of the diterpenic acid isosteviol (ISO) was evaluated for its effect on the oxidative metabolism of mitochondria…”
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Amino acid and monoamine alterations in the cerebral cortex and hippocampus of mice submitted to ricinine-induced seizures by Ferraz, Anete C., Anselmo-Franci, Janete A., Perosa, Sandra R., de Castro-Neto, Eduardo F., Bellissimo, Maria Ines, de Oliveira, Brás H., Cavalheiro, Esper A., Naffah-Mazzacoratti, Maria da Graça, Da Cunha, Cláudio

“…The alkaloid ricinine isolated from the plant Ricinus communis, when administered to mice at high doses, induces clonic seizures accompanied by…”
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Therapy of adrenocortical cancer: present and future by Maluf, Daniela F, de Oliveira, Brás H, Lalli, Enzo

“…Adrenocortical carcinoma is a rare endocrine malignancy with an estimated worldwide incidence of 0.5 - 2 per million/year. This neoplasm is characterized by a…”
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HPLC analysis of flavonoids in Eupatorium littorale by Oliveira, Brás H. de, Nakashima, Tomoe, Souza Filho, José D. de, Frehse, Fabiano L.

“…The isolation and identification of eupafolin and hispidulin in the dried leaves of Eupatorium littorale (Asteraceae) are described. A method for the detection…”
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Mitotane associated with cisplatin, etoposide, and doxorubicin in advanced childhood adrenocortical carcinoma: mitotane monitoring and tumor regression by Zancanella, Patrícia, Pianovski, Mara A D, Oliveira, Brás H, Ferman, Sima, Piovezan, Gislaine C, Lichtvan, Leniza L, Voss, Suely Z, Stinghen, Sérvio Túlio, Callefe, Luiz G, Parise, Guilherme A, Santana, Maria Helena A, Figueiredo, Bonald C

“…To define a mitotane dose for pediatric patients with adrenocortical cancer (ACC) that maintains therapeutic plasma levels (TL) between 14 and 20 microg/mL and…”
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Biotransformation of the diperpenoid, isosteviol, by Aspergillus niger, Penicillium chrysogenum and Rhizopus arrhizus by de Oliveira, Brás H, dos Santos, Márcia C, Leal, Paulo C

“…The biotransformation of isosteviol ( ent-16-ketobeyeran-19-oic acid) by three fungi is described. Aspergillus niger produced the 7β-OH derivative,…”
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Preparation of Derivatives of Betulinic Acid, Steviol and Isosteviol and Evaluation of Antitrypanosomal and Antimalarial Activities by Ullah, Asad, Baratto, Leopoldo C., Paula, Renata C., Silva, Luz Helena V., Soares, Maurilio J., Oliveira, Brás H.

“…Derivatives of steviol, isosteviol and betulinic acid were prepared and tested in vitro against Plasmodium falciparum W2 (chloroquine-resistant) and…”
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Biotransformation of steviol derivatives by Aspergillus niger and Fusarium moniliforme by Oliveira, Brás H. de, S. Filho, José Dias, Leal, Paulo C.

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Determination of the diterpenoid, kaurenoic acid, in Annona glabra by HPLC by Oliveira, B.H, Sant'Ana, A.E.G, Bastos, D.Z.L

“…The isolation of ent‐kaur‐16‐en‐19‐oic acid (1) from the leaves and bark of Annona glabra and its determination by reversed‐phase HPLC with a photodiode array…”
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Influence of rosmarinic acid and Salvia officinalis extracts on melanogenesis of B16F10 cells by Oliveira, Karina B., Palú, Érika, Weffort-Santos, Almeriane M., Oliveira, Brás H.

“…Melanin is a photoprotective skin pigment, and pathologies characterized by hypo or hyperpigmentation are common. New compounds that regulate melanogenesis…”
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Pharmacological Evaluation of Ricinine, a Central Nervous System Stimulant Isolated from Ricinus communis by Ferraz, Anete C, Angelucci, Miriam Elizabeth M, Da Costa, Mariana L, Batista, Ilza R, De Oliveira, Bras H, Da Cunha, Claudio

“…The extract of the pericarp of castor bean ( Ricinus communis) showed some typical central nervous system stimulant effects when administered to mice. The…”
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Effects of natural flavones on membrane properties and citotoxicity of HeLa cells by Herrerias, Tatiana, Oliveira, Alexandre A., Belem, Maurício L., Oliveira, Brás H., Carnieri, Eva G. S., Cadena, Sílvia M. S. C., Noleto, Guilhermina R., Martinez, Glaucia R., Oliveira, Maria B. M., Rocha, Maria E. M.

“…The aim of this study was to determine whether eupafolin and hispidulin, flavones extracted from Eupatorium littorale Cabrera, Asteraceae, have the ability to…”
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