Results 71 to 80 of about 1,978 (176)

Produtos naturais anti - Helicobacter pylori: revisão

Revista Ibero-Americana de Ciências Ambientais, 2018
A infecção pela bactéria Helicobacter pylori é considerada um problema de saúde pública, com intrínseca relação saúde e ambiente, a infecção bacteriana crônica mais comum no mundo, com alta prevalência em países em desenvolvimento. O uso de produtos naturais voltados a inovação medicamentosa, aumenta o interesse por novos princípios ativos a base de ...
Mariana Lenina Menezes Aleixo, Carla Galbiati, Larissa Maria Scalon Lemos   +2 more
openaire   +2 more sources

Predicting the Ecological Risks of Phytoestrogens in Coastal Waters Using In Silico and In Vitro Approaches

Coasts
Emerging pollutants, like phytoestrogens, are gaining attention in the scientific community for their impact on aquatic organisms. Nevertheless, there is a paucity of studies examining their effects on tropical aquatic species.
Luciana Lopes Guimarães, Bárbara Faria Lourenço, Fabio Hermes Pusceddu, Fernando Sanzi Cortez, Rafael Barreiros Kiyotani, Gilmar Aparecido dos Santos, Walber Toma, Vinicius Roveri   +7 more
doaj   +1 more source

Therapeutic Potential of Species: Flavonoids and other Secondary Metabolites

Natural Product Communications, 2008
The Kalanchoe genus (syn. Bryophyllum ), family Crassulaceae, comprises 125 species, most of them native to Madagascar. The great importance of several of these species for the traditional medicine in several regions of the World, esspecially India ...
Sônia S. Costa, Michelle F. Muzitano, Luiza M. M. Camargo, Marcela A. S. Coutinho   +3 more
doaj   +1 more source

Produtos naturais na COVID-19

, 2022
No final do ano de 2019, surgiram os primeiros casos de COVID-19, na China. Esta doença é provocada pelo novo coronavírus SARS-CoV-2 e pode resultar numa infeção respiratória grave. Num curto espaço de tempo, observou-se que esta doença se transmitia facilmente entre os indivíduos, através de gotículas de saliva ou secreção nasal libertadas quando um ...
openaire   +1 more source

Ru(II)-Catalyzed Asymmetric Transfer Hydrogenation of α-Alkyl-β-Ketoaldehydes via Dynamic Kinetic Resolution

Molecules
The (R,R)-Teth-TsDPEN-Ru(II) complex promoted the one-pot double C=O reduction of α-alkyl-β-ketoaldehydes through asymmetric transfer hydrogenation/dynamic kinetic resolution (ATH-DKR) under mild conditions.
Daiene P. Lapa, Leticia H. S. Araújo, Sávio R. Melo, Paulo R. R. Costa, Guilherme S. Caleffi   +4 more
doaj   +1 more source

3β-O-Tigloylmelianol from Guarea kunthiana: A New Potential Agent to Control Rhipicephalus (Boophilus) microplus, a Cattle Tick of Veterinary Significance

Molecules, 2014
Chemical investigation of Guarea kunthiana fruits, guided by their effect on the reproductive cycle of engorged females of the cattle tick Rhipicephalus (Boophilus) microplus—a major economic problem to the livestock industry worldwide—led to isolation
Carlos Henrique Miguita, Carolina da Silva Barbosa, Lidilhone Hamerski, Ulana Chaves Sarmento, José Nicácio do Nascimento, Walmir Silva Garcez, Fernanda Rodrigues Garcez   +6 more
doaj   +1 more source

Effect of Byrsonima sericea DC. leaf extracts on mice gastrointestinal tract

Toxicology Reports, 2019
Byrsonima sericea DC. (Malpighiaceae) leaves are popularly folk medicine in Brazil used to treat gastro-intestinal disorders including diarrhea and gastric diseases.
Patrícia de Araújo Rodrigues, Selene Maia de Morais, Liza Araújo Aguiar, Nadja Soares Vila-Nova, Stephen Rathinaraj Benjamin   +4 more
doaj   +1 more source

Chemical Diversity of Marine Filamentous Benthic Cyanobacteria

Phycology
Genomic and chemical analysis has revealed that numerous species of filamentous cyanobacteria harbor complex secondary metabolisms tailored to their particular ecological niche.
Fernanda O. Chagas, Paulo I. Hargreaves, Victoria Gabriela S. Trindade, Taiane B. M. Silva, Gabriela de A. Ferreira, Yasmin Pestana, Marina A. Alves, Paulo Sergio Salomon, Vincent A. Bielinski, Ricardo M. Borges   +9 more
doaj   +1 more source

Obtaining glycerol alkyl ethers via Williamson synthesis in heterogeneous media using amberlyst-A26TM −OH form and KOH/Al2O3 as basic solid reagents

Green Chemistry Letters and Reviews
Two innovative and efficient routes were developed to produce glycerol-alkyl ethers employing Williamson reaction conditions in a heterogeneous medium.
Priscila Faustino dos Santos, Fernanda Priscila Nascimento Rodrigues da Silva, Sara Raposo Benfica da Silva, Vera Lúcia Patrocinio Pereira   +3 more
doaj   +1 more source

A Química de Produtos Naturais do Brasil no Século XXI

Química Nova, 2017
The chemistry of natural products in Brazil has experienced a rapid development during the 21st century, with a diversification of lines of research, methodological approaches, exploration of diverse natural sources for the isolation of secondary metabolites and establishment of several multidisciplinary initiatives.
Berlinck, Roberto G. S., Borges, Warley de S., Scotti, Marcus T., Vieira, Paulo C.   +3 more
openaire   +4 more sources