Four series of acidamides were synthesized, and through measurement using a fluorogenic substrate assay with human recombinant MMP-1, MMP-2 and MMP-9, compound 3f showed considerable inhibitory activities against MMP-2, MMP-9 and the best selectivity over MMP-1. Preliminary structure–activity relationship analysis indicated that caffeicacidamides with electron-donating groups at para-position of
Electrochemical Oxidation of Caffeic and Ferulic Acid Derivatives in Aprotic Medium
作者:Magali Salas-Reyes、Javier Hernández、Zaira Domínguez、Felipe J. González、Pablo D. Astudillo、Rosa Elena Navarro、Evelin Martínez-Benavidez、Carlos Velázquez-Contreras、Samuel Cruz-Sánchez
DOI:10.1590/s0103-50532011000400012
日期:——
We studied the electrochemical behaviour as a function of the structure of a series of caffeic and ferulic acids derivatives as well as their corresponding redox moieties catechol and guaiacol by cyclic voltammetry. Results revealed that the medium is key for changes in the oxidation mechanism of guaiacol and ferulic acid. Electrochemical oxidation of the ferulic acid amide derivatives revealed that the nitrogen atom plays an important role in the derivatization of the electrode surface. In addition, radical scavenging activity of the compounds evaluated through the percentage of inhibition of the 2,2'-diphenyl-1-picrylhidrazyl radical showed a good relationship with the oxidation potentials.