Ontology highlight
ABSTRACT:
SUBMITTER: Zhang XY
PROVIDER: S-EPMC4719825 | biostudies-other | 2015 Dec
REPOSITORIES: biostudies-other
Acta crystallographica. Section E, Crystallographic communications 20151121 Pt 12
In the octa-hydroxanthenedione unit of the title compound, C31H27NO6, the central di-hydro-pyran ring shows an envelope conformation, while the bilateral cyclo-hexene and cyclo-hexane rings adopt a half-boat conformation and a chair conformation, respectively. The nitro-benzene ring is twisted with respect to the two benzene rings, making dihedral angles of 63.1 (1) and 63.0 (1)°. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains propagating along the a-axis di ...[more]