title: Mol-ecular and crystal structure of gossypol tetra-methyl ether with an unknown solvate.
abstract: The title compound, C34H38O8 (systematic name: 5,5'-diisopropyl-2,2',3,3'-tetra-meth-oxy-7,7'-dimethyl-2H,2'H-8,8'-bi-[naphtho-[1,8-bc]furan]-4,4'-diol), has been obtained from a gossypol solution in a mixture of dimethyl sulfate and methanol. The mol-ecule is situated on a twofold rotation axis, so the asymmetric unit contains one half-mol-ecule. In the mol-ecule, the hy-droxy groups are involved in intra-molecular O-H⋯O hydrogen bonds, and the two naphthyl fragments are inclined each to other by 83.8 (1)°. In the crystal, weak C-H⋯O and C-H⋯π inter-actions consolidate the packing, which exhibits channels with an approximate diameter of 6 Å extending along the c-axis direction. These channels are filled with highly disordered solvent mol-ecules, so their estimated scattering contribution was subtracted from the observed diffraction data using the SQUEEZE option in PLATON [Spek, A. L. (2015). Acta Cryst. C71, 9-18].
authors: Institute of Bioorganic Chemistry, Mirzo-Ulughbek Str. 83, Tashkent, 100125, Uzbekistan.
authors: Muhabbat
authors: M
authors: Honkeldieva
authors: Institute of Bioorganic Chemistry, Mirzo-Ulughbek Str. 83, Tashkent, 100125, Uzbekistan.
authors: Samat
authors: S
authors: Talipov
authors: Institute of Bioorganic Chemistry, Mirzo-Ulughbek Str. 83, Tashkent, 100125, Uzbekistan.
authors: Rustam
authors: R
authors: Mardanov
authors: Institute of Bioorganic Chemistry, Mirzo-Ulughbek Str. 83, Tashkent, 100125, Uzbekistan.
authors: Bakhtiyar
authors: B
authors: Ibragimov
keywords: C—H⋯O hydrogen bonds; C—H⋯π inter­actions; crystal structure; gossypol; gossypol tetra­methyl ether; porous structure