title: 8,14-Secogammacera-7,14(27)-diene-3,21-dione-8,14-secogammacera-7,14-diene-3,21-dione (1.5/0.5) from the bark of Lansium domesticum Corr.
abstract: The components of the title cocrystal, 1.5C(30)H(40)O(2)·0.5C(30)H(40)O(2), each have two tetra-hydro-deca-lin-type fused rings connected through an ethyl-ene fragment [R-CH(2)-CH(2)-R' torsion angles: 158.1 (7) ° in the major component and 157.5 (6)° in the minor component]. The structure is a non-merohedral twin, with a minor twin component of 26%. The exocyclic double-bonded C atom of the major component of the cocrystal is disordered over two sites of equal occupancy.
authors.forename: Roekmi-Ati
authors.initials: RA
authors.lastname: Tjokronegero
authors.forename: Tri
authors.initials: T
authors.lastname: Mayanti
authors.forename: Unang
authors.initials: U
authors.lastname: Supratman
authors.forename: Mat Ropi
authors.initials: MR
authors.lastname: Mukhtar
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng