title: 14-Hy-droxy-8,14-secogammacera-7-ene-3,21-dione from the bark of Lansium domesticum Corr.
abstract: In the title compound (kokosanolide B), C(30)H(48)O(3), the hexa-hydro- and octa-hydro-naphthalen-2-one ring systems are connected through an ethyl-ene fragment, with a C-CH(2)-CH(2)-C torsion angle of 176.2 (2)°. The cyclo-hexene ring adopts a half-chair conformation, while the other six-membered rings adopt distorted chair conformations. In the crystal, adjacent mol-ecules are linked into a zigzag chain along the b axis by O-H⋯O hydrogen bonds involving the hy-droxy and carbonyl groups.
authors.forename: Unang
authors.initials: U
authors.lastname: Supratman
authors.forename: Tri
authors.initials: T
authors.lastname: Mayanti
authors.forename: Khalijah
authors.initials: K
authors.lastname: Awang
authors.forename: Mat Ropi
authors.initials: MR
authors.lastname: Mukhtar
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng