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Alkoxyamines Designed as Potential Drugs against Plasmodium and Schistosoma Parasites ArchiMer
Reyser, Thibaud; To, Tung H.; Egwu, Chinedu; Paloque, Lucie; Nguyen, Michel; Hamouy, Alexandre; Stigliani, Jean-luc; Bijani, Christian; Augereau, Jean-michel; Joly, Jean-patrick; Portela, Julien; Havot, Jeffrey; Marque, Sylvain R. A.; Boissier, Jérôme; Robert, Anne; Benoit-vical, Françoise; Audran, Gérard.
Malaria and schistosomiasis are major infectious causes of morbidity and mortality in the tropical and sub-tropical areas. Due to the widespread drug resistance of the parasites, the availability of new efficient and affordable drugs for these endemic pathologies is now a critical public health issue. In this study, we report the design, the synthesis and the preliminary biological evaluation of a series of alkoxyamine derivatives as potential drugs against Plasmodium and Schistosoma parasites. The compounds (RS/SR)-2F, (RR/SS)-2F, and 8F, having IC50 values in nanomolar range against drug-resistant P. falciparum strains, but also five other alkoxyamines, inducing the death of all adult worms of S. mansoni in only 1 h, can be considered as interesting...
Tipo: Text Palavras-chave: Alkoxyamine; Alkylation; Heme; Malaria; Radical chemistry; Schistosomiasis.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00648/76024/76920.pdf
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Deacylative alkylation (DaA) of N-methyl-3-acetyl-2-oxindole for the synthesis of symmetrically 3,3-disubstituted 2-oxindoles. An access gate to anticancer agents and natural products. Anais da ABC (AABC)
MORENO-CABRERIZO,CRISTINA; ORTEGA-MARTÍNEZ,AITOR; MOLINA,CYNTHIA; NÁJERA,CARMEN; SANSANO,JOSÉ M..
ABSTRACT The synthesis of 3,3-disubstituted N-methyloxindoles, starting from 3-acetyl-2-hydroxy-1-methyloxindole employing a sequential one-pot synthesis, is studied. The process involves a first alkylation in the presence of 1 equiv. of both organic halide and Triton B and the second one employs another 1.5 equiv. of each in moderate to high yields. This procedure is compared with the results obtained from the direct dialkylation of N-methyloxindole. The metathesis of one of the corresponding diallylated product was also studied obtaining the spiranic oxindole. All these methodologies are directed towards the access to anticancer agents and natural biologically active products.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deacylation; Alkylation; 2-oxindoles; Metathesis; Anticancer; Natural products.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000301089
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