Caracterização eletroquímica do composto LQFM-091, obtido por hibridação molecular a partir dos protótipos nimesulida e BF-389

Abstract

Nimesulide is an anti-inflammatory drug (NSAID) whose preferential selectivity for cyclooxygenase-2 (COX-2) leads to fewer adverse effects and wide use. Nimesulide, like other NSAIDs and selective COX-2 by inhibiting a single metabolic pathway of the arachidonic acid cascade are still responsible for gastrointestinal and cardiovascular side effects. However, recent studies show that the development of multi-targeted anti-inflammatory is an important strategy for obtaining the most effective drugs with fewer side effects. Therefore, the molecular changes from nimesulide has been proposed as a molecular hybridization with a derivative of butylhydroxytoluene BF-389. Such molecular modification products aim to inhibit metabolic pathways of two cascade of arachidonic acid, COX-2 and via the 5-lipoxygenase (LOX). Within the search string and development of new candidate drugs presenting prototypes of electroactive subunits, the characterization of the redox profiles can be made through the electrochemical techniques, which are characterized by speed, low cost and simplicity. In the electrochemical characterization of a new candidate prototype was observed two peaks with anode potential of 1.0V 0,42V and due to oxidation of aromatic amine and phenolic hydroxyl respectively. After analysis by varying the pH and scanning speed, it follows that mass transfer occurs via diffusion processes and proton transfer. The electrochemical analyzes, and are a supplementary means of characterization, were conclusive to prove that the electroactive groups are important in drug mechanism of action, remain free and yet, via a calibration curve constructed by measuring the current (i) due to the potential different concentrations of analyte, one can demonstrate the ability to dispense the new drug candidate developed.