Synthesis and biological evaluation of new curcumin derivatives as antioxidant and antitumor agents
作者:Said M. Bayomi、Hassan A. El-Kashef、Mahmoud B. El-Ashmawy、Magda N. A. Nasr、Magda A. El-Sherbeny、Farid A. Badria、Laila A. Abou-zeid、Mariam A. Ghaly、Naglaa I. Abdel-Aziz
DOI:10.1007/s00044-012-0116-9
日期:2013.3
Twenty-four new compounds were prepared, taking curcumin as a lead, in order to explore their antioxidant and antitumor properties. The capacities of these derivatives to scavenge the 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical cation (ABTS(.+)), and to protect human red blood cells (RBCs) from oxidative haemolysis were investigated. In addition, the percentage viability of different cell lines (Hep G2, WI38, VERO and MCF-7) was tested. The result of the antitumor testing was generally in accordance with those of the antioxidant assays. Compounds which bear o-methoxy substitution to the 4-hydroxy function in the phenyl ring (7g, 5g and 3g) exhibited significantly higher ABTS(.+)-scavenging, antihaemolysis, and antitumor activities than other derivatives. In addition, molecular modelling studies were carried out for biologically active and inactive compounds, to study the structure-activity relationship, with the aim to elucidate which portions of the molecules are critical for the antioxidant and antitumor activity.