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.
A sesquiterpenoid that is 1,4,5,6,7,8-hexahydro-4,7-epidioxyazulen-3(2H)-one substituted by a hydroxy group at position 8, methyl groups at positions 1 and 4 and an isopropyl group at position 7 (the (1R,4R,7S,8S stereoisomer). Isolated from Nardostachys chinensis, it exhibits antimalarial activity.