(20S)-20-Acet­oxy-4-pregnene-316-dione from Commiphora wightii

摘要

The title triterpene compound, C23H32O4, isolated from Commiphora wightii features four trans-fused rings, among which the five-membered ring adopts an envelope conformation, the cyclo­hexene ring adopts a half-chair conformation and the two cyclo­hexane rings exist in chair conformations. The asymmetric unit contains two independent mol­ecules. Weak inter­molecular C—H⋯O hydrogen bonding is present in the crystal structure.