4-oxo Withaferin A is a derivative of the steroidal lactone withaferin A that has anticancer activity.
1 It is cytotoxic to A2780 ovarian cancer cells and carboplatin-resistant A2780 (A2780/CP70) cells (IC
50s = 7.3 and <1 μM, respectively) and is 4.4-fold selective for A2780 cells over non-cancerous ARPE19 cells.
