Ophiopogonin D, isolated from the tubers of Ophiopogon japonicus, is a rare naturally occurring C29 steroidal glycoside[1]. Ophiopogonin D is a CYP2J3 inducer that significantly inhibits Ang II induced NF-κB nuclear translocation, IκBα down-regulation, intracellular Ca2+ overload and activation of pro-inflammatory cytokines by increasing the expression of CYP2J2/EETs and PPARα in human umbilical vein endothelial cells (HUVECs). Ophiopogonin D has been used to treat inflammatory and cardiovascular diseases for thousands of years[2].

References:
[1]. Wang L , et al. Homo-aro-cholestane, furostane and spirostane saponins from the tubers of Ophiopogonjaponicus. Phytochemistry. 2017 Apr;136:125-132.
[2]. Huang X, et al. Ophiopogonin D and EETs ameliorate Ang II-induced inflammatory responses via activating PPARα in HUVECs. Biochem Biophys Res Commun. 2017 Aug 19;490(2):123-133.