Abstract
The title compound, C21H30O, was isolated from the soft coral Sinularia sp. The molecule contains four alicyclic rings, all trans-fused, among which three six-membered rings are in different distorted chair conformations while a five-membered ring assumes an envelope form.
Highlights
The title compound, C21H30O, was isolated from the soft coral Sinularia sp
The molecule contains four alicyclic rings, all trans-fused, among which three six-membered rings are in different distorted chair conformations while a five-membered ring assumes an envelope form
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: GK2251)
Summary
Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.004 A; R factor = 0.051; wR factor = 0.114; data-to-parameter ratio = 9.9. The title compound, C21H30O, was isolated from the soft coral Sinularia sp. The molecule contains four alicyclic rings, all trans-fused, among which three six-membered rings are in different distorted chair conformations while a five-membered ring assumes an envelope form. Related literature For general background to marine pregnanes isolated from marine organisms, see: Higgs & Faulkner (1977); Blackman et al (1985); Hooper & Davies-Coleman (1995); Kittakoop et al (1999); Li et al (2009); Yan et al (2004, 2007); Zhang et al (2005); Seo et al (1995). Orthorhombic, P212121 a = 7.2619 (13) Ab = 10.998 (2) Ac = 21.964 (4) A V = 1754.2 (6) A 3
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