2,2'-[(3-Bromo-4-hy-droxy-5-meth-oxy-phen-yl)methyl-idene]bis-(3-hy-droxy-5,5-dimethyl-cyclo-hex-2-en-1-one).

In the title compound, C(24)H(29)BrO(6), the dihedral angle between the cyclo-hexenone mean planes is 57.63†(2)° while the dihedral angles between the benzene ring and the cyclo-hexenone mean planes are 58.42†(2) and 69.08†(3)°. The two cyclo-hexenone rings both show an envelope conformation, with the C atom bearing two methyl groups as the flap atom in each ring. Two intra-molecular O-H⋯O hydrogen bonds occur. In the crystal, molecules are linked via pairs of O-H⋯O hydrogen bonds, forming inversion dimers.