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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC 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.

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Accession:CHEBI:66387 term browser browse the term
Definition:A macrocyclic diterpenoid isolated from the soft coral Sinularia microclavata and has been shown to exhibit cytotoxic activities against tumor cell lines.
Synonyms:exact_synonym: (1R,2E,5E,7R,9R,12S,15S)-3,7,12,16,16-pentamethyl-8-oxatricyclo[,9)]hexadeca-2,5-diene-4,10-dione
 related_synonym: Formula=C20H28O3;   InChI=1S/C20H28O3/c1-12-6-7-14-15(19(14,3)4)11-13(2)16(21)8-9-20(5)18(23-20)17(22)10-12/h8-9,11-12,14-15,18H,6-7,10H2,1-5H3/b9-8+,13-11+/t12-,14-,15+,18-,20+/m0/s1;   InChIKey=XMAKUNDAGAVHGP-XWUHLNSPSA-N;   SMILES=[H][C@@]12O[C@]1(C)\\C=C\\C(=O)\\C(C)=C\\[C@]1([H])[C@]([H])(CC[C@H](C)CC2=O)C1(C)C
 xref: PMID:16038555;   Reaxys:15769435

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Term Annotations click to browse term
  CHEBI ontology 19761
    role 19711
      application 19401
        pharmaceutical 19289
          drug 19289
            antineoplastic agent 17257
              microclavatin 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19761
    subatomic particle 19759
      composite particle 19759
        hadron 19759
          baryon 19759
            nucleon 19759
              atomic nucleus 19759
                atom 19759
                  main group element atom 19653
                    p-block element atom 19653
                      carbon group element atom 19569
                        carbon atom 19559
                          organic molecular entity 19559
                            organic group 18593
                              organic divalent group 18584
                                organodiyl group 18584
                                  carbonyl group 18499
                                    carbonyl compound 18499
                                      ketone 16824
                                        alpha,beta-unsaturated ketone 8953
                                          enone 8953
                                            microclavatin 0
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