title: 3β,12β,14α-Trihydroxy-pregnan-20-one.
abstract: 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-diacet-oxy-20-ethyl-enedioxy-pregnan-14-ene. The con-formations 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 intra-molecular O-H⋯O hydrogen bond occurs. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into a two-dimensional network.
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China.
authors.forename: Hefang
authors.initials: H
authors.lastname: Shi
authors.forename: Yingxia
authors.initials: Y
authors.lastname: Li