Insights about resveratrol analogs against trypanothione reductase of <i>Leishmania braziliensis</i>: Molecular modeling, computational docking and <i>in vitro</i> antileishmanial studies
作者:Adilson D. da Silva、Juliana A. dos Santos、Patrícia A. Machado、Lara A. Alves、Larissa C. Laque、Vinícius C. de Souza、Elaine S. Coimbra、Priscila V. S. Z. Capriles
DOI:10.1080/07391102.2018.1502096
日期:2019.7.24
In this work, we combined molecular modeling, computational docking and in vitro analysis to explore the antileishmanial effect of some resveratrol analogs (ResAn), focusing on their pro-oxidant effect. The molecular target was the trypanothione reductase of Leishmania braziliensis (LbTryR), an essential component of the antioxidant defenses in trypanosomatid parasites. Three-dimensional structures
Fast Hydrazone Reactants: Electronic and Acid/Base Effects Strongly Influence Rate at Biological pH
作者:Eric T. Kool、Do-Hyoung Park、Pete Crisalli
DOI:10.1021/ja407407h
日期:2013.11.27
Kinetics studies with structurally varied aldehydes and ketones in aqueous buffer at pH 7.4 reveal that carbonyl compounds with neighboring acid/base groups form hydrazones at accelerated rates. Similarly, tests of a hydrazine with a neighboring carboxylic acid group show that it also reacts at an accelerated rate. Rate constants for the fastest carbonyl/hydrazine combinations are 2-20 M-1 s(-1), which is faster than recent strain-promoted cycloaddition reactions.
In vitro and in vivo anti-inflammatory properties of imine resveratrol analogues
作者:Danielle Cristina Zimmermann-Franco、Bruna Esteves、Leticia Moroni Lacerda、Isabela de Oliveira Souza、Juliana Alves dos Santos、Nícolas de Castro Campos Pinto、Elita Scio、Adilson David da Silva、Gilson Costa Macedo
DOI:10.1016/j.bmc.2018.08.029
日期:2018.9
Resveratrol is a natural polyphenol found mainly on red grapes and in red wine, pointed as an important antiinflammatory/immunomodulatory molecule. However, its bioavailability problems have limited its use encouraging the search for new alternatives agents. Thus, in this study, we synthesize 12 resveratrol analogues (6 imines, 1 thioimine and 5 hydrazones) and investigated its cytotoxicity, antioxidant activity and in vitro antiinflammatory/immunomodulatory properties. The most promising compounds were also evaluated in vivo. The results showed that imines presented less cytotoxicity, were more effective than resveratrol on DPPH scavenger and exhibited an anti-inflammatory profile. Among them, the imines with a radical in the para position, on the ring B, not engaged in an intramolecular hydrogen-interaction, showed more prominent anti-inflammatory activity modulating, in vivo, the edema formation, the inflammatory infiltration and cytokine levels. An immunomodulatory activity also was observed in these molecules. Thus, our results suggest that imines with these characteristics presents potential to control inflammatory disorders.
Synthesis, and docking studies of arylhydrazone compounds and evaluation of their platelet aggregation inhibitory effect and cytotoxicity
作者:Maryam H. Klidsar、Marjan Esfahanizadeh、Pantea Haghverdi、Salimeh Amidi、Farzad Kobarfard