title: 8-[(3,3-Dimethyl-oxiran-2-yl)methoxy-meth-yl]-11-hydr-oxy-2-isopropenyl-5-methyl-12-oxo-1,2,3,12-tetra-hydro-pyrano[3,2-a]xanthen-1-yl acetate.
abstract: The title compound, commonly known as 14-methoxy-tajixanthone-25-acetate, C(28)H(30)O(8), was isolated from Emericella variecolor. The central xanthone core is approximately planar (r.m.s. deviation = 0.084 Å). The dihydro-pyran ring adopts a distorted half-chair conformation. The oxirane plane is oriented at an angle of 63.3 (2)° with respect to the phenol group. An intra-molecular O-H⋯O hydrogen bond forms an S(6) ring. In the crystal, mol-ecules are linked into a two-dimensional network parallel to the ab plane by weak inter-molecular C-H⋯O hydrogen bonds.
authors.forename: Jatupol
authors.initials: J
authors.lastname: Liangsakul
authors.forename: Suphongphan
authors.initials: S
authors.lastname: Srisurichan
authors.forename: Nongnuj
authors.initials: N
authors.lastname: Muangsin
authors.forename: Narongsak
authors.initials: N
authors.lastname: Chaichit
authors.forename: Surachai
authors.initials: S
authors.lastname: Pornpakakul