Fourteen novelsteroidal C-17 pyrazolinyl derivatives 9a–g and 10a–g were synthesized from commercially available progesterone and tested for their cytotoxic activity against brine shrimp (Artemia salina) and three human cancer cell lines (NCI-H460, HeLa, and HepG2). Some of these synthetic compounds exhibited significant cytotoxic activity, and treatment of HeLa cells with compound 10b resulted in
has resulted in the discovery of chemically novel insecticides, of which steroids-based compounds that mimic the action of hormones have been considered as safe insecticides. In this study, eight steroidalC-17 pyrazolinyl derivatives were resynthesized through molecular hybridization and their insecticidal activities against 4thinstar larvae of Mythimna separate were evaluated. These results showed that