Rufigallol or 1,2,3,5,6,7-hexahydroxy-9,10-anthraquinone is an organic compound with formula C
14
O
8
H
8
. It one of several hydroxyanthraquinones. It occurs naturally being derived from gallic acid.

Rufigallol
Skeletal formula of rufigallol
Skeletal formula of rufigallol
Ball-and-stick model of rufigallol
Ball-and-stick model of rufigallol
Names
Preferred IUPAC name
1,2,3,5,6,7-Hexahydroxyanthracene-9,10-dione
Other names
Rufigallic acid; 1,2,3,5,6,7-Hexahydroxy-9,10-anthraquinone; 1,2,3,5,6,7-Hexahydroxyanthracene-9,10-dione
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
UNII
  • InChI=1S/C14H8O8/c15-5-1-3-7(13(21)11(5)19)10(18)4-2-6(16)12(20)14(22)8(4)9(3)17/h1-2,15-16,19-22H ☒N
    Key: NEIMTOOWBACOHT-UHFFFAOYSA-N ☒N
  • InChI=1/C14H8O8/c15-5-1-3-7(13(21)11(5)19)10(18)4-2-6(16)12(20)14(22)8(4)9(3)17/h1-2,15-16,19-22H
    Key: NEIMTOOWBACOHT-UHFFFAOYAS
  • C1=C2C(=C(C(=C1O)O)O)C(=O)C3=CC(=C(C(=C3C2=O)O)O)O
Properties
C14H8O8
Molar mass 304.210 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

The compound is soluble in dioxane, from which it crystallizes as red needles that sublime without melting at 365 °C.[1] It can be obtained by treating gallic acid with concentrated sulfuric acid and then with sodium hydroxide.[1] It is prepared by acid-catalyzed condensation of a pair of gallic acid molecules.[2]

Rufigallol is particularly toxic to the malarial parasite Plasmodium falciparum and has a synergistic effect in combination with the antimalarial drug exifone, which has structural similarities to rufigallol.[3]

Rufigallol forms a crimson-colored complex with beryllium, aluminium, thorium, zirconium and hafnium, and this reaction has been used for the spot and spectrophotometric determination of beryllium in low concentrations.[1]

See also

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References

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  1. 1 2 3 Azim, M. A.; Ayaz, A. A. (1969). "Spectrophotometric determination of beryllium". Mikrochimica Acta. 57: 153–159. doi:10.1007/BF01216677.
  2. Bisoyi, Hari Krishna; Kumar, Sandeep (2007). "Microwave-assisted synthesis of rufigallol and its novel room-temperature liquid crystalline derivatives". Tetrahedron Letters. 48 (25): 4399–4402. doi:10.1016/j.tetlet.2007.04.094.
  3. Winter, R. W.; Cornell, K. A.; Johnson, L. L.; Ignatushchenko, M.; Hinrichs, D. J.; Riscoe, M. K. (1996). "Potentiation of the antimalarial agent rufigallol". Antimicrobial Agents and Chemotherapy. 40 (6): 1408–1411. doi:10.1128/AAC.40.6.1408. PMC 163340. PMID 8726010.