Consulta: subjectFacets:"Antimalarial activity"
Registros recuperados: 4
Data/hora: 06/06/2024 01:14:27

New Antimalarial and Antimicrobial Tryptamine Derivatives from the Marine Sponge Fascaplysinopsis reticulata
Provedor de dados: 5
Autores: Campos, Pierre-eric; Pichon, Emmanuel; Moriou, Céline; Clerc, Patricia; Trépos, Rozenn; Frederich, Michel; De Voogd, Nicole; Hellio, Claire; Gauvin-bialecki, Anne; Al-mourabit, Ali.
Chemical study of the CH2Cl2-MeOH (1:1) extract of the sponge Fascaplysinopsis reticulata collected in Mayotte highlighted three new tryptophan derived alkaloids, 6,6′-bis-(debromo)-gelliusine F (1), 6-bromo-8,1′-dihydro-isoplysin A (2) and 5,6-dibromo-8,1′-dihydro-isoplysin A (3), along with the synthetically known 8-oxo-tryptamine (4) and the three known molecules from the same family, tryptamine (5), (E)-6-bromo-2′-demethyl-3′-N-methylaplysinopsin (6) and (Z)-6-bromo-2′-demethyl-3′-N-methylaplysinopsin (7). Their structures were elucidated by 1D and 2D NMR spectra and HRESIMS data. All compounds were evaluated for their antimicrobial and their antiplasmodial activities. Regarding antimicrobial activities, the best compounds are (2) and (3), with minimum...
Tipo: Text
Palavras-chave: Fascaplysinopsis reticulata; Marine sponge; Tryptamine alkaloids; Antimalarial activity; Antimicrobial activity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00485/59664/62722.pdf

In vitro antimalarial activity of six Aspidosperma species from the state of Minas Gerais (Brazil)
Provedor de dados: 42
Autores: Dolabela,Maria Fâni; Oliveira,Salma G.; Peres,José M.; Nascimento,José M.S.; Póvoa,Marinete M.; Oliveira,Alaide B.
Ethnomedicinal informations point to some Aspidosperma species (Apocynaceae) as antimalarial plants in Brazil and have motivated the evaluation of six species which were collected in the state of Minas Gerais: A. cylindrocarpon Müll. Arg., A. parvifolium A. DC., A. olivaceum Müll. Arg., A. ramiflorum Müll. Arg., A. spruceanum Benth. ex Müll. Arg. and A. tomentosum Mart.. A total of 23 extracts of different plant parts in different solvents were assayed in vitro against chloroquine-resistant (W2) and chloroquine-sensitive (3D7) strains of Plasmodium falciparum. All the extracts were shown to be active with IC50 values in the range of 5.0 ± 0 2.8 µg/mL to 65.0 ± 4.2 µg/mL. TLC profile of the extracts revealed the presence of alkaloids in the six species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimalarial activity; Plasmodium falciparum; In vitro assays; Aspidosperma spp.; Apocynaceae.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400005

2,3,8-Trisubstituted Quinolines with Antimalarial Activity
Provedor de dados: 42
Autores: MARTINEZ,PABLO D.G.; KRAKE,SUSANN H.; POGGI,MAITIA L.; CAMPBELL,SIMON F.; WILLIS,PAUL A.; DIAS,LUIZ C.
ABSTRACT Combination therapy drugs are considered a fundamental way to control malaria as it mimimizes the risk of emergence of resistance to the individual partner drugs. Consequently, this type of therapy constitutes a driving force for the discovery of new drugs with different modes of action, since this will provide options for combining different drugs to achieve the optimum antimalarial treatment. In this context, a 2,3,8-trisubstitued quinoline compound was found in a high throughput screen (HTS) to show an excellent inhibition of P. falciparum NF54 (IC50 = 22 nM) and low cytotoxicity. We performed a detailed evaluation of the substituents to improve the metabolic stability and solubility liabilities of the original hit and identified derivatives...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimalarial activity; Trisubstituted quinoline; SAR; Resistance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000301215

Plant-derived antimalarial agents: new leads and efficient phythomedicines. Part I. Alkaloids
Provedor de dados: 42
Autores: Oliveira,Alaíde B.; Dolabela,Maria Fâni; Braga,Fernão C.; Jácome,Rose L.R.P.; Varotti,Fernando P.; Póvoa,Marinete M.
Malaria remains one of the most serious world health problem and the major cause of mortality and morbidity in the endemic regions. Brazil is among the 30 high-burden countries and most of the cases occur in the Legal Amazonian Region. New chemotherapeutical agents are needed for the treatment of malaria. Many plant species are used in traditional medicines of malarious countries and a relatively few number of these have been investigated for evaluation of their antimalarial effect. Still lower is the number of those that have had the active natural compounds isolated and the toxicity determined. This area is, then, of great research interest. discovery project of antimalarial natural products from plants traditionally used to treat malaria must include in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Natural products; Alkaloids; Antimalarial activity; Medicinal plants; Phytomedicines.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000400011