Results 1 to 10 of about 1,995 (175)

Insecticidal Potential of Aniba canelilla (H.B.K.) Mez Essential Oil Against Aedes aegypti: Larvicidal and Adulticidal Activities, Mechanism of Action, and Formulation Development [PDF]

Plants
Control of Aedes aegypti, the primary vector of arboviruses such as dengue, Zika, and chikungunya, is increasingly difficult due to resistance to synthetic insecticides and environmental concerns.
Jefferson D. da Cruz, Maíra M. H. Almeida, Maria Athana M. Silva, Jefferson R. A. Silva, Fernando A. Genta, Ana Claudia F. Amaral   +5 more
doaj   +2 more sources

Antimycobacterial and Nitric Oxide Production Inhibitory Activities of Goyazensolide and Centratherin Isolated From Eremanthus crotonoides by High-Speed Countercurrent Chromatography. [PDF]

Chem Biodivers
ABSTRACT In this study, bioassay‐guided fractionation of the ethanolic extract from Eremanthus crotonoides leaves enabled the isolation of two bioactive sesquiterpene lactones, centratherin and goyazensolide, which were evaluated for their antimycobacterial and anti‐inflammatory properties.
da Rocha Ximenes NG, Calixto SD, Simão TLBV, Lassunskaia EB, de Homobono de Brito Moura P, Leal IRC, Muzitano MF, Pinto SC.   +7 more
europepmc   +2 more sources

Microbial Chemical Diversity and Cytotoxic Potential From Brazilian Ferruginous Caves: A Pioneering Metabolomic Survey. [PDF]

Chem Biodivers
ABSTRACT Cave microbiomes represent a rich yet understudied source of chemical diversity with biotechnological properties. Microorganisms in these environments thrive under extreme conditions such as darkness, oligotrophy, and high concentrations of inorganic matter like iron ore.
Kato NN, Cardoso AF, Sahm BDB, Costa-Lotufo LV, Bitencourt JAP, Lopes NP.   +5 more
europepmc   +2 more sources

Chemical Constituents and Biological Activities of Oxandra (Annonaceae): A Review. [PDF]

Chem Biodivers
ABSTRACT Oxandra (Annonaceae) comprises 29 species distributed across South and Central America. Despite this diversity, the genus remains under‐investigated. This study presents the first comprehensive review of the chemical composition and biological activities of Oxandra species, utilizing databases such as SciFinder, ScienceDirect, PubMed, and ...
Lopes RC, Machado FP, Brito MF, de Souza TA, Abreu LS.   +4 more
europepmc   +2 more sources

Os produtos naturais e a química medicinal moderna [PDF]

Quimica Nova, 2006
Natural products have been utilized by humans since ancient times and the relief and cure of their diseases was the first purpose for using natural products in medicine. The history of the oriental and occidental civilizations is very rich in examples of the utilization of natural products in medicine and health care.
Vanderlan Bolzani, Claudio Viegas, Eliezer J Barreiro   +2 more
exaly   +6 more sources

Produtos naturais e o farmacêutico [PDF]

Revista Brasileira De Farmacognosia, 1989
The importance of a better and constant quality control of products and drugs from vegetal natural sources is here enhanced whereas the Professional Pharmacist undoubtely must be the more convenient element for that purpose. It comes from its multidiscipline knowledge on the fields of botany, phytochemistry and pharmacology all together needful to ...
Ferro Vicente De Oliveira
exaly   +4 more sources

Iridoids from Himatanthus sucuuba Modulate Feeding Behavior of Lutzomyia longipalpis: Integrated Experimental and Computational Approaches [PDF]

Molecules
Control strategies for leishmaniasis increasingly target sand fly vectors through sugar feeding approaches containing bioactive compounds. This study investigated the behavioral and toxicological effects of the iridoids plumericin and isoplumericin ...
Maíra M. H. Almeida, Jefferson D. da Cruz, Maria Athana M. Silva, Samara G. Costa-Latgé, Bruno Gomes, Fernando A. Genta, Jefferson R. A. Silva, Ana Claudia F. Amaral   +7 more
doaj   +2 more sources

Produtos naturais: atualidade, desafios e perspectivas [PDF]

Quimica Nova, 2002
This article offers an overview on the historical facts and the recent state of art of Chemistry of Natural Products which, in the course of 25 years of SBQ, have led to the present development of this area in Brazil. In addition, this article deals with the last trends on Natural Products in Brazil and also in developed countries.
Vanderlan Bolzani, Dulce Silva, Norberto Peporine Lopes   +2 more
exaly   +5 more sources

Cobalt-Catalyzed C–Se Bond Activation: Cross-Coupling of Organoselenides with Grignard Reagents [PDF]

Molecules
Herein, we report a cobalt-catalyzed cross-coupling of organoselenides with Grignard reagents using simple CoCl2 as the catalyst. This efficient method accommodates a broad scope of selenides, including vinyl, aryl, heteroaryl, and alkynyl derivatives ...
Tais V. de Souza Pinto, Kamilly D. V. P. Sobrinho, Maria E. C. da Silva, Sandynara A. de Oliveira, Andreia P. V. de Jesus, Tereza A. N. Ribeiro, Leonardo G. de Vasconcelos, Paulo T. de Sousa Júnior, Sumbal Saba, Jamal Rafique, André L. Stein   +10 more
doaj   +2 more sources

Advances on Functional Foods with Antioxidant Bioactivity [PDF]

Foods
Oxidative stress (OS), an imbalance between the production of free radicals and the body’s ability to detoxify them, has been linked to a wide range of diseases [...]
Carla S. Carneiro, Igor A. Rodrigues
doaj   +2 more sources