16α,17α-Epoxy-20-oxopregn-5-ene-3β,21-diyl diacetate

Authors :: H. I. M. Soares
M. J. M. de Almeida
M. J. S. M. Moreno
A. S. Campos Neves
José A. Paixão
M. L. Sa E Melo
L. C. R. Andrade
R. M. L. M. Martins
Source :: Acta Crystallographica Section E Structure Reports Online. 59:o299-o301
Publication Year :: 2003
Publisher :: International Union of Crystallography (IUCr), 2003.
Abstract: The title compound, C25H34O6, has a 3β,21-configuration, with the epoxy O atom at 16α,17α. Rings A and C have chair conformations which are slightly flattened. Because of the presence of a double bond, ring B assumes an 8β,9α-half chair conformation. Ring D has a conformation close to a 14α-envelope. Cohesion of the crystal can be attributed to van der Waals interactions and weak C—H⋯O interactions.