Results 21 to 30 of about 225 (114)

Terpenos e ácidos graxos de Dipteryx lacunifera Ducke [PDF]

Química Nova, 2007
This paper describes the isolation of the furanocassane-type diterpene, named vinhaticoic acid, along with b-farnesene and spatulenol from fruit shells of D. lacunifera. Structural determinations were accomplished by chemical derivatization and spectral analysis, including 1D and 2D NMR and X-ray crystallography.
Vieira Júnior, Gerardo Magela, Silva, Hilris Rocha e, Bittencourt, Thaís Chaves, Chaves, Mariana H., Simone, Carlos Alberto de   +4 more
openaire   +3 more sources

Use of chemometric and quantum-mechanical methods in the analysis of bioactive terpenoids and phenylpropanoids against the Aedes aegypti

Orbital: The Electronic Journal of Chemistry, 2010
Dengue fever is one of the main public health problems in the world. Many mosquitoes have developed resistance to the conventional insecticides used. Thus, the search for vegetable extracts and natural substances as alternative insecticides has increased.
Reginaldo Bezerra dos Santos, Valdemar Lacerda Júnior, Eustaquio Vinicius Ribeiro de Castro, Vinicius de Oliveira Balthar, Sandro José Greco   +4 more
doaj   +1 more source

Composición química, propiedades antioxidantes y actividad antimicrobiana de propóleos mexicanos

Acta Universitaria, 2020
En México, los propóleos se ofertan por su actividad antioxidante y su actividad antimicrobiana, por lo cual es necesario realizar su análisis utilizando la norma de calidad mexicana.
Betsabé Rodríguez Pérez, María Margarita Canales Martínez, José Guillermo Penieres Carrillo, Tonatiuh Alejandro Cruz Sánchez   +3 more
doaj   +1 more source

Medicinal cannabis extracts are neuroprotective against Aβ1–42‐mediated toxicity in vitro

Basic &Clinical Pharmacology &Toxicology, Volume 135, Issue 5, Page 575-592, November 2024.
Abstract Background Phytocannabinoids inhibit the aggregation and neurotoxicity of the neurotoxic Alzheimer's disease protein β amyloid (Aβ). We characterised the capacity of five proprietary medical cannabis extracts, heated and non‐heated, with varying ratios of cannabidiol and Δ9‐tetrahydrocannabinol and their parent carboxylated compounds to ...
Dylan T. Marsh, Mayu Shibuta, Ryuji Kato, Scott D. Smid   +3 more
wiley   +1 more source

Síntesis de nopol a partir de trementina: revisión del estado del arte

Ingeniería y Ciencia, 2012
En esta contribución se hace una revisión de los métodos para la síntesis del nopol. Los procesos convencionales abarcan la síntesis térmica y la catalítica con ZnCl2 y los emergentes corresponden a los catalíticos heterogéneos.
Edwin A Alarcón, Aída L Villa
doaj   +1 more source

Óleos essenciais de espécies do genero Calyptranthes [PDF]

Acta Amazonica, 1972
Sinopse Na Amazônia se encontram algumas espécies de Galyptranthes (Myrtaceae). A comparação do óleo essencial de suas folhas varia de espécie para espécie. Assim é que o óleo destilado de C.
R. G. CAMPOS CORRÊA, M. LEÃO DA SILVA, J. G. SOARES MAIA, O. R. GOTTLIEB, J. CORRÊA MOURÃO, M.C. MARX, A. ALPANDE DE MORAES, M. KOKETSU, L. LANNES MOURA, M. TAVEIRA MAGALHÃES   +9 more
doaj   +1 more source

Biosíntesis de terpenos en pinos

, 2021
1. La fase de plántula en P. pinaster es un estadío del desarrollo de la planta bien definido, tanto anatómica, como fisiológica y bioquímicamente. 2. En este período se desarrollan, paralelamente, los sistemas fotosintéticos y los responsables de la biosíntesis de monoterpenos y de los ácidos resínicos. 3.
Monteoliva Sánchez, Mercedes, Funes, A., García-Peregrin, E., Zafra, M. F., Henares, M.   +4 more
openaire   +1 more source

Cannabidiol Modulation of Nicotine‐Induced Toxicity: Assessing Effects on Behavior, Brain‐Derived Neurotrophic Factor, and Oxidative Stress in C57BL/6 Male Mice

Journal of Neuroscience Research, Volume 102, Issue 9, September 2024.
High nicotine dose induces anxiety‐like behavior in mice in the Open Field Test, alongside oxidative stress, proinflammatory cytokine secretion, and brain‐derived neurotrophic factor (BDNF) reduction in brain regions. Cannabidiol acts as an anxiolytic, exhibiting antioxidant activities, reducing cytokines, and normalizing BDNF levels.
Konstantinos Mesiakaris, Korina Atsopardi, George Lagoumintzis, Marigoula Margarity, Konstantinos Poulas   +4 more
wiley   +1 more source

Confinement Effects in Catalysis: Steering the Product Selectivity in Cannabidiol Isomerization by the Resorcinarene Supramolecular Capsule

ChemCatChem, Volume 16, Issue 16, August 26, 2024.
The confinement effect provided by the resorcinarene hydrogen bonded capsule in the presence of HCl accelerates the isomerization of cannabidiol leading to cyclic and hydrated products that are uncommon compared to the same reaction with traditional strong Brønsted acids, thus widening the chemical scenario provided by the capsule.
Francesca Bordignon, Roberto Calmanti, Alvise Perosa, Fabrizio Fabris, Alessandro Scarso   +4 more
wiley   +1 more source

Avaliação do uso de catalisador de cobre para produção de mirceno a partir da isomerização térmica do β-pineno

Revista Principia
Os terpenos são uma matéria-prima natural e sustentável utilizada na indústria de química fina, permitindo a produção de aromas e fragrâncias de interesse para a sociedade. Entre os inúmeros terpenos identificados, o mirceno é um importante intermediário
Mônica Beatriz Kolicheski, Marcelle Guth de Freitas Batista, Demian Pacheco do Nascimento, Lucas Hideki Minamida, Allan Ribeiro da Silva, Vitor Thomé Salvador   +5 more
doaj   +1 more source