5-{2-(4-Chloro­phen­yl)-1-[2-(4-chloro­phen­yl)-1-(3,4,5-trimeth­oxy­phen­yl)eth­oxy]eth­yl}-1,2,3-trimeth­oxy­benzene

The title compound, C₃₄H₃₆Cl₂O₇, is a by-product from the reaction of 4-chloro­benzyl­zinc chloride with 3,4,5-trimeth­oxy­benzaldehyde. In each of the two 1,2-diphenyl­ethyl moieties, the two benzene rings are arranged in a trans conformation and make C_ar-C-C-C_ar torsion angles of 163.64 (19) and 174.43 (18)°. The crystal structure is stabilized by van der Waals inter­actions only.

Oxyresveratrol from Mulberry as a dihydrate

The title compound {systematic name: 4-[(E)-2-(3,5-dihy­droxy­phen­yl)ethen­yl]benzene-1,3-diol dihydrate}, C₁₄H₁₂O₄·2H₂O, a derivative of resveratrol, was isolated from mulberry. The linking C=C double bond has a trans conformation and allows the formation of a conjugated system throughout the mol­ecule. The dihedral angle between the benzene rings is 9.39 (9)°. In the crystal, mol­ecules are connected into a three-dimensional architecture through O—H...O hydrogen bonds between hy­droxy groups of oxyresveratrol and solvent water mol­ecules.