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Term:topopyrone B
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Accession:CHEBI:66253 term browser browse the term
Definition:A naphthochromene that is 4H-naphtho[2,3-g]chromene-4,6,11-trione substituted by a chloro group at position 8, hydroxy groups at positions 5, 7 and 9 and a methyl group at position 2. It is isolated from a fungal strain Phoma sp.BAUA2861 and acts as an inhibitor of the enzyme topoisomerase I.
Synonyms:exact_synonym: 8-chloro-5,7,9-trihydroxy-2-methyl-4H-naphtho[2,3-g]chromene-4,6,11-trione
 related_synonym: Formula=C18H9ClO7;   InChI=1S/C18H9ClO7/c1-5-2-8(20)13-10(26-5)4-7-11(17(13)24)16(23)12-6(15(7)22)3-9(21)14(19)18(12)25/h2-4,21,24-25H,1H3;   InChIKey=XQMOGUIQWMFPBF-UHFFFAOYSA-N;   SMILES=Cc1cc(=O)c2c(O)c3C(=O)c4c(O)c(Cl)c(O)cc4C(=O)c3cc2o1
 xref: PMID:11099218;   PMID:11099219;   PMID:17020299;   Reaxys:8732205

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  CHEBI ontology 19789
    role 19735
      biological role 19734
        antimicrobial agent 17277
          topopyrone B 0
Path 2
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  CHEBI ontology 19789
    subatomic particle 19787
      composite particle 19787
        hadron 19787
          baryon 19787
            nucleon 19787
              atomic nucleus 19787
                atom 19787
                  main group element atom 19672
                    p-block element atom 19672
                      carbon group element atom 19569
                        carbon atom 19558
                          organic molecular entity 19558
                            organic group 18473
                              organic divalent group 18467
                                organodiyl group 18467
                                  carbonyl group 18366
                                    carbonyl compound 18366
                                      ketone 15993
                                        cyclic ketone 13469
                                          quinone 8246
                                            p-quinones 8146
                                              topopyrone B 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.