Optimization of Antitrypanosomatid Agents: Identification of Nonmutagenic Drug Candidates with in Vivo Activity
作者:Guzmán Álvarez、Javier Varela、Pablo Márquez、Martín Gabay、Carmen Elena Arias Rivas、Karina Cuchilla、Gustavo A. Echeverría、Oscar E. Piro、Marlus Chorilli、Sandra M. Leal、Patricia Escobar、Elva Serna、Susana Torres、Gloria Yaluff、Ninfa I. Vera de Bilbao、Mercedes González、Hugo Cerecetto
DOI:10.1021/jm500018m
日期:2014.5.22
selectivity and also performed mutagenicity studies. Proof of concept, in vivo studies, was conducted with two of the most promising derivatives (77 and 80). They were identified as candidates because they have (i) very simple and cost-effective syntheses; (ii) activity against different stages and strains of the parasite showing excellent in vivo behavior during the acute phase of Chagas disease; and
The four compounds, namely: 5-nitro-2-furaldehyde thiosemicarbazone (1); 5-nitro-2-thiophene thiosemicarbazone (2); 5-nitro-2-furaldehyde semicarbazone (3); and 5-nitro-2-thiophene semicarbazone (4) were synthesized and crystallized. The three new crystal structures of 1, 2, and 4 were determined and compared to three already known crystal structures of 3. Additionally, two new polymorphic forms of
cancer therapy. Combination chemotherapy using Tdp1 inhibitors as a component can potentially improve therapeutic response to many chemotherapeutic regimes. A new set of usnic acidderivatives with hydrazonothiazole pharmacophore moieties were synthesized and evaluated as Tdp1 inhibitors. Most of these compounds were found to be potent inhibitors with IC50 values in the low nanomolar range. The activity
Synthesis and Biological Activity of Nitro Heterocycles Analogous to Megazol, a Trypanocidal Lead
作者:Gérard Chauvière、Bernard Bouteille、Bertin Enanga、Cristina de Albuquerque、Simon L. Croft、Michel Dumas、Jacques Périé
DOI:10.1021/jm021030a
日期:2003.1.1
the two rings of the basic nucleus, replacement of the thiadiazole by an oxadiazole, replacement of the nitroimidazole part by a nitrofurane or a nitrothiophene, and substitutions on the exocyclic nitrogen atom for evaluation of an improved import by the glucose or the purine transporters. Assays of the series of compounds on the protozoan parasites Trypanosoma brucei, Trypanosoma cruzi, and Leishmania