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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.

Term:6-methoxyspirotryprostatin B
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Accession:CHEBI:66707 term browser browse the term
Definition:An indole alkaloid isolated from a marine-derived fungal strain Aspergillus sydowii PFW1-13 and has been shown to exhibit cytotoxic activity.
Synonyms:exact_synonym: (2S,3S,5aS)-6'-methoxy-3-(2-methylprop-1-en-1-yl)-5a,6,7,8-tetrahydro-5H,10H-spiro[dipyrrolo[1,2-a:1',2'-d]pyrazine-2,3'-indole]-2',5,10(1'H)-trione
 related_synonym: Formula=C22H23N3O4;   InChI=1S/C22H23N3O4/c1-12(2)9-18-22(14-7-6-13(29-3)10-15(14)23-21(22)28)11-17-19(26)24-8-4-5-16(24)20(27)25(17)18/h6-7,9-11,16,18H,4-5,8H2,1-3H3,(H,23,28)/t16-,18-,22-/m0/s1;   InChIKey=UHQKDPCPFNXIDU-ZJBJCVSYSA-N;   SMILES=[H][C@@]12CCCN1C(=O)C1=C[C@]3([C@H](C=C(C)C)N1C2=O)C(=O)Nc1cc(OC)ccc31
 xref: Chemspider:23329453;   PMID:18505285;   Reaxys:18842463

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  CHEBI ontology 19781
    role 19726
      application 19412
        pharmaceutical 19312
          drug 19312
            antineoplastic agent 17263
              6-methoxyspirotryprostatin B 0
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  CHEBI ontology 19781
    subatomic particle 19779
      composite particle 19779
        hadron 19779
          baryon 19779
            nucleon 19779
              atomic nucleus 19779
                atom 19779
                  main group element atom 19669
                    p-block element atom 19669
                      carbon group element atom 19588
                        carbon atom 19578
                          organic molecular entity 19578
                            organic molecule 19510
                              organic cyclic compound 19337
                                organic heterocyclic compound 18550
                                  organic heteropolycyclic compound 18038
                                    organic heterobicyclic compound 16778
                                      benzopyrrole 9558
                                        indoles 9228
                                          indolones 5857
                                            6-methoxyspirotryprostatin B 0
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