title: 24-Methyl-enecyclo-artanone.
abstract: The title compound, C(31)H(50)O, a tetra-cyclic triterpene, was isolated from Ainsliaea henryi. The mol-ecule contains a three-membered ring, a five-membered ring, which exhibits an envelope conformation, and three six-membered rings, which adopt chair conformations.
authors.forename: Hui-Ping
authors.initials: HP
authors.lastname: Xiong
authors.forename: Zhi-Jun
authors.initials: ZJ
authors.lastname: Wu
authors.forename: Fa-Tang
authors.initials: FT
authors.lastname: Chen
authors.forename: Wan-Sheng
authors.initials: WS
authors.lastname: Chen