3β,12β,14α-Trihydroxy­pregnan-20-one

The title compound, C(21)H(34)O(4), is a steriod of the pregnane family prepared by the sequential oxidation and reduction of 3β,12β-diacet­oxy-20-ethyl­enedioxy­pregnan-14-ene. The con­formations of the six-membered rings are close to chair forms, while the five-membered ring adopts an envelope conformation. All the rings are trans-fused and an intra­molecular O—H⋯O hydrogen bond occurs. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into a two-dimensional network.