Crystal structure of bis[3-methoxy-17β-estra-1,3,5(10)-trien-17-yl] oxalate

Abstract

In the title compound, C40H50O6, a symmetrical steroid oxalate diester, the dihedral angle between the CO2planes of the oxalate linker is 61.5 (5)° and the C—C bond length is 1.513 (6) Å. The steroidB,CandDrings adopt half-chair, chair and envelope conformations, respectively, in both halves of the molecule, which adopts an overall shallow V-shaped conformation. In the crystal, molecules are linked by weak C—H...O interactions, forming a three-dimensional network.