A new series of indolizine derivatives were synthesized and screened for the antiproliferative potential against NCI 60 tumor cell line panel. The results of the study revealed a selective and good antitumor growth inhibitory activity against SNB-75 CNS cancer cell line for 1-cyanoindolizine derivative 10b. Moreover, a supplementary in vitro biologicalevaluation showed that compound 9d exhibited a