organic compounds
In the title compound, 9-(3-furyl)-1,4,4a,5,9,10,10a,10b-octahydro-4-hydroxy- 4a,10a-dimethyl-1,4-etheno-3H,7H-benzo[1,2-c:3,4-c′]dipyran-3,7-dione, C20H20O6, the pyran ring adopts a conformation intermediate between sofa and half-chair. All other six-membered rings are in the boat conformation. The furan ring is planar and is equatorially attached. The crystal structure is stabilized by O—HO and C—HO intermolecular hydrogen bonds.
Supporting information
Crystallographic Information File (CIF) | |
Structure factor file (CIF format) |
CCDC reference: 130586