Possible anticancer agents: QSAR analogs of glutamamide: Synthesis and pharmacological activity of 1,5-N,N′-disubstituted-2-(substituted benzenesulphonyl) glutamamides
Based on our earlier QSAR prediction, a series of designed QSAR analogs of 1,5-N,N'-disubstituted-2-(substituted benzenesulphonyl) glutamamides were synthesized as possible anticancer agents. Inhibitions of tumor cell proliferation of the compounds were tested in tumor cell line IMR-32. Anticancer activities of these compounds were also evaluated on Swiss Albino mice against Ehrlich Ascites Carcinoma (EAC) cells. Tumor weight inhibition and tumor cell inhibition were considered as anticancer activity parameters. QSAR analysis of these compounds was performed on the basis of a set of descriptors like physicochemical, topological, quantum chemical and DRAGON whole molecular descriptors. The study showed that the increase of length of substituent at R-2 position and the increase of dipole moment of the molecule decrease the anticancer activity of these compounds, presence of bromine atom at R-3 position and hydrophilic substitution at R-2 position are advantageous to the activity. Nucleophilic attack at atom number 14 is advantageous and electrophilic attack at atom number 15 is detrimental to anticancer activity. Atom number 2 is important and may be involved in dispersive interactions of the compounds with enzymes. The results offer an opportunity for further tailoring of these analogs for an active member. (C) 2008 Elsevier Masson SAS. All rights reserved.
5-N-Substituted-2-(substituted benzenesulphonyl) glutamines as antitumor agents. Part II: Synthesis, biological activity and QSAR study
interest in life science. It was proved that cancer is a nitrogen trap and tumor cells are avid glutamine consumers. The non-essential amino acid glutamine, which is a glutamic acid derivative, supplies its amide nitrogen to tumor cells in the biosynthesis of purine and pyrimidine bases of nucleic acids as well as takes part in protein synthesis. Based on these and in continuation of our composite programme