Search Results - "Barbosa, Luiz Cláudio de Almeida"

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    Phytotoxic effects of metabolites from Alternaria euphorbiicola against its host plant Euphorbia heterophylla by Varejão, Eduardo Vinícius Vieira, Demuner, Antônio Jacinto, Barbosa, Luiz Cláudio de Almeida, Barreto, Robert Weingart

    Published in Química Nova (2013)
    “…A bioassay-guided fractionation of culture filtrates of the fungus Alternaria euphorbiicola, a pathogen of the weed Euphorbia heterophylla, led to the…”
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    QSAR modeling of photosynthesis-inhibiting nostoclide derivatives by Teixeira, Róbson Ricardo, Pinheiro, Patrícia F, Barbosa, Luiz Cláudio de Almeida, Carneiro, José Walkimar de M, Forlani, Giuseppe

    Published in Pest management science (01-02-2010)
    “…BACKGROUND: A statistical model, built using the CODESSA software package, was developed to describe the relationship between the structure of nostoclide…”
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    Harvest time on the content and chemical composition of essential oil from leaves of guava by Silva, Elizabeth Aparecida Josefi da, Silva, Vanessa Paula da, Alves, Cassia Cristina Fernandes, Alves, José Milton, Souchie, Edson Luiz, Barbosa, Luiz Cláudio de Almeida

    Published in Ciência rural (01-10-2016)
    “…The essential oil plants contents can be affected by several factors. For example, in certain plants, collection time has been observed to affect the content…”
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    Synthesis of New Phytogrowth-Inhibitory Substituted Aryl-p-Benzoquinones by deAlmeidaBarbosa, LuizCláudio, de Alvarenga, Elson Santiago, Demuner, Antônio Jacinto, Virtuoso, Luciano Sindra, Silva, Antônio Alberto

    Published in Chemistry & biodiversity (01-05-2006)
    “…Reaction of [(2‐alkyloxy)methyl]‐1,4‐dimethoxybenzene 10 (alkyl=butyl, hexyl, decyl, tridecyl, tetradecyl, hexadecyl, and octadecyl) with ceric ammonium…”
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    A comparative study on the crystal structure of bicycle analogues to the natural phytotoxin helminthosporins by Barbosa, Luiz Cláudio de Almeida, Teixeira, Robson Ricardo, Nogueira, Leonardo Brandão, Maltha, Celia Regina Alvares, Doriguetto, Antônio Carlos, Martins, Felipe Terra

    Published in Journal of molecular structure (05-02-2016)
    “…Herein we described structural insights of a series of analogues to helminthosporin phytotoxins. The key reaction used to prepare the compounds corresponded to…”
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    Síntese e avaliação da atividade antimalárica de novos ozonídeos by BARBOSA, Luiz Cláudio de Almeida, MALTHA, Célia Regina Álvares, ALVARENGA, Elson Santiago

    Published in Eclética química (01-05-2018)
    “…A reação de cicloadição [3+4] entre diferentes dienos (ciclopentadieno, 2-metilfurano e furano) e halocetonas levou aos cicloadutos correspondentes, cuja…”
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    Chemical characterization by GC-MS and phytotoxic potential of non-polar and polar fractions of seeds of Dioteryx odorata (Aubl.) Willd. from Venezuelan regions by Oliveros-Bastidas, Alberto de J., Demuner, Antonio J., Barbosa, Luiz Claudio de Almeida

    Published in Química Nova (2013)
    “…Dipteryx odorata (Aubl.) Willd. is a tall arboreal species native to Central and Northern South America. This paper describes the chemical characterization and…”
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    Constituintes químicos da casca de Ochroma lagopus swartz (Bombacaceae) by PAULA, Vanderlúcia Fonseca de, BARBOSA, Luiz Cláudio de Almeida, PILÓ-VELOSO, Dorila, DEMUNER, Antonio Jacinto, HOWARTH, Oliver

    Published in Eclética química (01-05-2018)
    “…O estudo químico das cascas de Ochroma lagopus Swartz levou ao isolamento e ou, identificação de uma mistura de ácidos graxos e triacilglicerídeos, de…”
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    Composição e fungitoxicidade do óleo essencial de capim citronela em função da adubação orgânica by Veloso, Ronice Alves, Castro, Henrique Guilhon de, Cardoso, Dione Pereira, Santos, Gil Rodrigues dos, Barbosa, Luiz Cláudio de Almeida, Silva, Kamilla Pires da

    Published in Pesquisa agropecuaria brasileira (01-12-2012)
    “…O objetivo deste trabalho foi avaliar a influência da adubação orgânica sobre o teor e a composição do óleo essencial de capim citronela (Cymbopogon nardus),…”
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    Variação química do óleo essencial de Hyptis suaveolens (L.) Poit., sob condições de cultivo by Martins, Felipe Terra, Santos, Marcelo Henrique dos, Polo, Marcelo, Barbosa, Luiz Cláudio de Almeida

    Published in Química Nova (01-12-2006)
    “…This study was performed to establish the correlation between the growth conditions and essential oil composition of Hyptis suaveolens from Alfenas (MG),…”
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    Preparation and phytotoxicity of sorgoleone analogues by Barbosa, Luiz Cláudio de Almeida, Ferreira, Maria Lúcia, Demuner, Antonio Jacinto, Silva, Antonio Alberto da, Pereira, Rita de Cássia

    Published in Química nova (01-12-2001)
    “…3,5-Dimethoxybenzylic alcohol was converted into the 2-acetoxy-5-methoxy-3-(pent-1-yl)-1,4-benzoquinone (12), in seven steps, with an overall yield of 14.6%…”
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    Influência do processo de secagem sobre os principais componentes químicos do óleo essencial de tomilho by Rocha, Ronicely Pereira da, Melo, Evandro de Castro, Barbosa, Luiz Cláudio de Almeida, Corbín, José Bon, Berbet, Pedro Amorim

    Published in Revista Ceres (01-10-2012)
    “…Objetivou-se, com este trabalho, avaliar o efeito da temperatura do ar de secagem sobre a qualidade do óleo essencial de folhas de tomilho. Foram empregadas…”
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    Discrimination between workers of Acromyrmex subterraneus molestans from monogynous and polygynous colonies by Souza, Danival José de, Lucia, Terezinha Maria Castro Della, Barbosa, Luiz Cláudio de Almeida

    “…Behavioral assays were conducted with individuals from monogynous and polygynous colonies of Acromyrmex subterraneus molestans to evaluate the discriminatory…”
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    Síntese e avaliação da atividade fitotóxica de lactonas derivadas do 2,4-dimetil-8-oxabiciclo[3.2.1]-oct-6-en-3-ona by Barbosa, Luiz Cláudio de Almeida, Maltha, Célia Regina Álvares, Borges, Eduardo Euclides Lima

    Published in Química nova (01-05-2002)
    “…The alkene 2,4-dimethyl-8-oxabicyclo[3.2.1]-oct-6-en-3-one (3) was converted to 1,3,10-trimethyl-8-oxabicyclo[5.3.0]-dec-3-ene-2,9-dione (7) and…”
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    Teor e composição do óleo essencial de cinco acessos de mentrasto by Castro, Henrique Guilhon de, Oliveira, Luiz Orlando de, Barbosa, Luiz Cláudio de Almeida, Ferreira, Francisco Affonso, Silva, Derly José Henriques da, Mosquim, Paulo Roberto, Nascimento, Evandro Afonso

    Published in Química nova (01-02-2004)
    “…This study aimed to analyse the content and the composition of the essential oil of five accesses of mentrasto (Ageratum conyzoides). Five accesses of…”
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