RORγ antagonist 1 (compound 22), a potent derivative of betulinic acid, acts as an antagonist to RORγ with a dissociation constant (K D) of 0.18 μM. It demonstrates anti-proliferative effects in the HPAF-II pancreatic cancer xenograft model, inhibits the RAS/MAPK and AKT/mTORC1 signaling pathways, and triggers caspase-dependent apoptosis in pancreatic cancer cells [1].