title: 9-(4-Hy-droxy-3-meth-oxy-phen-yl)-3,3,6,6-tetra-methyl-3,4,5,6-tetra-hydro-9H-xanthene-1,8(2H,7H)-dione.
abstract: In the title compound, C(24)H(28)O(5), the two cyclo-hexene rings adopt envelope conformations, and the planes through the coplanar atoms makes dihedral angles of 82.86 (6) and 77.90 (6)° with the benzene ring. The two cyclo-hexene rings make a dihedral angle of 5.33 (6)° between their least-squares planes. The pyran ring adopts a flattened boat conformation. In the crystal packing, mol-ecules are linked into two-dimensional networks parallel to the ab plane via O-H⋯O and C-H⋯O inter-actions.
authors.forename: Noorhafizah
authors.initials: N
authors.lastname: Hasanudin
authors.forename: Aisyah Saad
authors.initials: AS
authors.lastname: Abdul Rahim
authors.forename: Nornisah
authors.initials: N
authors.lastname: Mohamed
authors.forename: Ching Kheng
authors.initials: CK
authors.lastname: Quah
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun