Neotriptonoterpene, a compound isolated from T. regelii, shows weak cytotoxic activity against A2780, HepG2 and MCF-7 cells with IC50 values of 65.80, 35.45 and 64.80 μM respectively[1].
References
[1] Dongsheng Fan, et al. New Abietane and Kaurane Type Diterpenoids from the Stems of Tripterygium regelii. Int J Mol Sci. 2017 Jan 13;18(1):147. DOI:10.3390/ijms18010147