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. [Display omitted] Based on our earlier QSAR prediction, a series of QSAR analogs of 1,5- N, N′-disubstituted-2-(substituted benzenesulphonyl) glutamamides were synthesized, pharmacologically evaluated and QSAR analysis of these compounds was performed. The study showed importance of particular atoms in dispersive interaction of the compounds with the enzymes, as well as the substitution patterns required for improved activity which may offer an opportunity for further tailoring of these analogs for an active member.