Scutebarbatine A
Scutebarbatine A, a natural product isolated and purified from the herbs of Scutellaria barbata D. Don, shows significant antitumor effects on A549 cells in vivo and in vitro via mitochondria-mediated apoptosis by up-regulating expressions of caspase-3 and 9, and down-regulating Bcl-2, and a significant ability to protect cells against H2O2 with ED50 values of 5.0 and 16.8 uM, respectively.