Rubrocurcumin
Names
IUPAC name
2-[(1E,3Z,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)-5-oxohepta-1,3,6-trien-3-yl]oxy-1,3,2-dioxaborolane-4,5-dione
Other names
Rubrocurcumin
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C23H19BO10/c1-30-20-11-14(5-9-18(20)26)3-7-16(25)13-17(32-24-33-22(28)23(29)34-24)8-4-15-6-10-19(27)21(12-15)31-2/h3-13,26-27H,1-2H3/b7-3+,8-4+,17-13- ☒N
    Key: CSMMVHRUFPYHCS-YRLHZMKXSA-N ☒N
  • Charged form: InChI=1S/C23H19BO10/c1-29-20-11-14(5-9-18(20)25)3-7-16-13-17(32-24(31-16)33-22(27)23(28)34-24)8-4-15-6-10-19(26)21(12-15)30-2/h3-13,25-26H,1-2H3/b7-3+,8-4+
    Key: YIFZXJZUXMHJJG-FCXRPNKRSA-N
  • B1(OC(=O)C(=O)O1)O/C(=C\C(=O)/C=C/c2ccc(c(c2)OC)O)/C=C/c3ccc(c(c3)OC)O
Properties
C23H19BO10
Molar mass 466.19 g/mol
Appearance red solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Rubrocurcumin is a red-colored dye that is formed by the reaction of curcumin and borates.

Synthesis

The reaction of curcumin with borates in presence of oxalic acid produces rubrocurcumin.[1]

Characteristics

Rubrocurcumin produces a red colored solution.

Rubrocurcumin is a neutral molecule, while rosocyanine is ionic. In rubrocurcumin, one molecule of curcumin is replaced with oxalate compared to rosocyanine.

Complexes with boron such as rubrocurcumin are called 1,3,2-dioxaborines.[1]

References

  1. ^ a b Rohde, D. (2002). Darstellung und Eigenschaftsuntersuchungen an 1,3,2-Dioxaborinen mit variablen Coliganden am Boratom [Presentation and characterization of 1,3,2-dioxaborins with variable coligands on the boron atom] (Dissertation). University Halle.

Further reading

  • Spicer, G. S.; Strickland, J. D. H. (1952). "Compounds of Curcumin and Boric Acid. Part II. The Structure of Rubrocurcumin". Journal of the Chemical Society. London. 1952 (art. 907): 4650–4653. doi:10.1039/JR9520004650.
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