1β,15α-Dihy-droxy-16α,17-ep-oxy-pregn-4-ene-3,20-dione

The title mol-ecule, C21H28O5, is composed of three six-membered rings (A/B/C) and a five-membered ring (D). Ring A adopts a 1α-sofa conformation, while rings B and C adopt chair conformations. Cyclo-pentane ring D adopts a 14α-envelope conformation. In the crystal, O-H⋯O hydrogen bonds lead to the...

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Bibliographic Details
Published inActa crystallographica. Section E, Structure reports online Vol. 69; no. Pt 3; p. o447
Main Authors Shen, Yan-Bing, Wang, Yi-Bo, Luo, Jian-Mei, Wang, Min
Format Journal Article
LanguageEnglish
Published United States International Union of Crystallography 01.03.2013
Subjects
Organic Papers
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Summary:The title mol-ecule, C21H28O5, is composed of three six-membered rings (A/B/C) and a five-membered ring (D). Ring A adopts a 1α-sofa conformation, while rings B and C adopt chair conformations. Cyclo-pentane ring D adopts a 14α-envelope conformation. In the crystal, O-H⋯O hydrogen bonds lead to the formation of ribbons running along the a axis. The structure is further consolidated by C-H⋯O inter-actions, which link the molecules head-to-tail into ribbons along the a axis.
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ISSN:1600-5368
1600-5368
DOI:10.1107/S1600536813005023