biostudies-literatureUnknown73(Pt 11)Piccialli VThe title compound, C₃₁H₄₈O₆, is a polyoxygenated ep-oxy steroid obtained by a multi-step synthesis involving oxidation of 7-de-hydro-cholesterol. It crystallizes in the <i>P</i>2₁2₁2₁ space group; however, the absolute structure of the molecule in the crystal could not be determined by resonant scattering. The configuration at the C5 and C6 positions is in both cases of the α-type, as is that of the C atoms of the ep-oxy ring. Mol-ecules in the crystal form chains parallel to the <i>b</i> axis by hydrogen bonding between O-H donors and carbonyl O-atom acceptors. Some atoms of the alkyl chain are disordered over two orientations, with a refined occupancy ratio of 0.511 (10):0.489 (10).Acta crystallographica. Section E, Crystallographic communications1603-1606https://www.ebi.ac.uk/biostudies/studies/S-EPMC5683473biostudies-literatureCrystal structure of an ep-oxy-sterol: 9α,11α-ep-oxy-5α-cholest-7-ene-3β,5,6α-triol 3,6-di-acetate.PMC5683473Tuzi APiccialli VCentore RfalseCrystal structure of an ep-oxy-sterol: 9α,11α-ep-oxy-5α-cholest-7-ene-3β,5,6α-triol 3,6-di-acetate.The title compound, C₃₁H₄₈O₆, is a polyoxygenated ep-oxy steroid obtained by a multi-step synthesis involving oxidation of 7-de-hydro-cholesterol. It crystallizes in the <i>P</i>2₁2₁2₁ space group; however, the absolute structure of the molecule in the crystal could not be determined by resonant scattering. The configuration at the C5 and C6 positions is in both cases of the α-type, as is that of the C atoms of the ep-oxy ring. Mol-ecules in the crystal form chains parallel to the <i>b</i> axis by hydrogen bonding between O-H donors and carbonyl O-atom acceptors. Some atoms of the alkyl chain are disordered over two orientations, with a refined occupancy ratio of 0.511 (10):0.489 (10).2017-01-01T00:00:00Z2017 Nov2025-04-18T19:02:52.983Z2019-03-27T03:01:41ZS-EPMC56834732915233310.1107/S2056989017013391