(-)-Epipodophyllotoxin (2) is an antiproliferative agent against cancer cells with GI50s of 0.36 and 0.24 μM in HeLa cells and MCF-7 cells, respectively. (-)-Epipodophyllotoxin can inhibit mitotic spindle assembly in vitro.

Bigelovin is a selective retinoid X receptor α agonist.?Bigelovin suppresses tumor growth through inducing apoptosis and autophagy via the inhibition of mTOR pathway regulated by ROS generation.It is also known as a potent cytotoxic sesquiterpene lactone from Inula sp.

Epimedokoreanin B (EKB), an isoprenylated flavonoid isolated from Korean Epimedium, exhibited anticancer activity in human non-small cell lung cancer (NSCLC) A549 and NCI-H292 cells.