Topopyrone C

Topopyrone C
Names
	Preferred IUPAC name 5,9,11-Trihydroxy-2-methyl-4H-anthra[1,2-b]pyran-4,7,12-trione
Identifiers
CAS Number	308368-85-6 [ [1] ];
3D model (JSmol)	Interactive image ;
ChEBI	CHEBI:66254 ;
ChEMBL	ChEMBL400146 ;
ChemSpider	8059936 ;
PubChem CID	9884262 ;
CompTox Dashboard (EPA)	DTXSID701045476 ;
	InChI InChI=1S/C18H10O7/c1-6-2-10(20)15-12(22)5-9-14(18(15)25-6)17(24)13-8(16(9)23)3-7(19)4-11(13)21/h2-5,19,21-22H,1H3 Key: AWDAPFGGFWZKGB-UHFFFAOYSA-N;
	SMILES CC1=CC(=O)C2=C(C=C3C(=C2O1)C(=O)C4=C(C=C(C=C4C3=O)O)O)O;
Properties
Chemical formula	C18H10O7
Molar mass	338.271 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Last updated September 21, 2025

Topopyrone C and its analogs are fungal isolates with anticancer activity in vitro .^[2]

References

↑ "KNApSAcK Metabolite Information - C00015651". www.knapsackfamily.com.
↑ Ishiyama, D; Kanai, Y; Senda, H; Iwatani, W; Iwatani, W; Konno, H; Kanazawa, S (2000). "Novel human topoisomerase I inhibitors, topopyrones A, B, C and D. II. Structure elucidation". The Journal of Antibiotics. 53 (9): 873–8. doi: 10.7164/antibiotics.53.873 . PMID 11099219.

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[1] "KNApSAcK Metabolite Information - C00015651". www.knapsackfamily.com.

[2] Ishiyama, D; Kanai, Y; Senda, H; Iwatani, W; Iwatani, W; Konno, H; Kanazawa, S (2000). "Novel human topoisomerase I inhibitors, topopyrones A, B, C and D. II. Structure elucidation". The Journal of Antibiotics. 53 (9): 873–8. doi: 10.7164/antibiotics.53.873 . PMID 11099219.

[2]

Names

Preferred IUPAC name 5,9,11-Trihydroxy-2-methyl-4H-anthra[1,2-b]pyran-4,7,12-trione
Identifiers
CAS Number	308368-85-6 ^{N[ [1]}]
3D model (JSmol)	Interactive image
ChEBI	CHEBI:66254
ChEMBL	ChEMBL400146
ChemSpider	8059936
PubChem CID	9884262
CompTox Dashboard (EPA)	DTXSID701045476
InChI InChI=1S/C18H10O7/c1-6-2-10(20)15-12(22)5-9-14(18(15)25-6)17(24)13-8(16(9)23)3-7(19)4-11(13)21/h2-5,19,21-22H,1H3 Key: AWDAPFGGFWZKGB-UHFFFAOYSA-N
SMILES CC1=CC(=O)C2=C(C=C3C(=C2O1)C(=O)C4=C(C=C(C=C4C3=O)O)O)O
Properties
Chemical formula	C₁₈H₁₀O₇
Molar mass	338.271 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references