The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/by/3.0/). For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.
An organic heterotetracyclic compound that is 1,2-dihydro-6H-furo[2,3-c]xanthene substituted by hydroxy groups at positions 5 and 10, a methoxy group at position 9 and methyl groups at positions 1, 1 and 2 and an oxo group at position 6. Isolated from the stem barks of Garcinia vieillardii, it exhibits antioxidant activity.