Abstract
Cancer is the second leading cause of death worldwide. There is always a huge demand for novel anticancer. New series of pyrazole, pyridine, thiazole derivatives containing sulfonamide moiety were prepared and screened for their antitumor activity against breast cancer cell line (MCF-7). The results of this investigation revealed that compounds 3 and 8 had significant anticancer activity against the MCF-7 cancer cell line with IC50 values 19.2 and 14.2 μM, respectively, in relation to the standard drug, doxorubicin.