This technology involves the synthesis of new compounds based on the sphaeropsidin A structure, aimed at improving its potency against drug-resistant cancers. Utilizing a cross-metathesis reaction, these compounds have shown significant growth inhibitory activity in various human cancer cell lines, including glioblastoma, non-small cell lung cancer, breast cancer, and melanoma. Notably, these analogues can overcome apoptosis resistance in cancer cells, a major hurdle in current cancer treatments.