6α-Hydr­oxy-12-oleanen-3-one: a triterpenoid from the stalks of Celastrus hypoleucus

The title compound, C₃₀H₄₈O₂, is a triterpenoid which was isolated from the stalks of Celastrus hypoleucus (Oliv.) Warb. The mol­ecule contains five six-membered rings adopting distorted boat, half-chair and chair conformations. The hydr­oxy groups serve as hydrogen-bond donors and the carb­onyl groups as acceptors, forming mol­ecular chains parallel to the b axis.