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 ergot alkaloid that is ergoline substituted by a 2-methylbut-3-en-2-yl group at position 2 and methyl groups at positions 6 and 8 (the 8beta stereoisomer). It is isolated from an endophytic fungus, Aspergillus fumigatus, and exhibits potent cytotoxicity against human leukemia cells (K562).