title: 6β-Chloro-5α-hydr-oxy-20-oxopregnan-3β-yl acetate.
abstract: The title steroid, C(23)H(35)ClO(4), is a pregnane derivative prepared by ring opening of the corresponding 5α,6α-ep-oxy steroid with BiCl(3). There are two symmetry-independent mol-ecules in the asymmetric unit that show no significant differences concerning bond lengths and angles. The conformation of the six-membered rings in both mol-ecules is close to a chair form, while the five-membered ring adopts an envelope conformation. All rings in both mol-ecules are trans-fused. The mol-ecules are held together by an extensive O-H⋯O hydrogen-bonding network.
authors.forename: Rui M A
authors.initials: RM
authors.lastname: Pinto
authors.forename: Jorge A R
authors.initials: JA
authors.lastname: Salvador
authors.forename: José A
authors.initials: JA
authors.lastname: Paixão
authors.forename: Ana
authors.initials: A
authors.lastname: Matos Beja
authors.forename: Manuela
authors.initials: M
authors.lastname: Ramos Silva