14,15-Didehydrohellebrigenin
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Published:2012-05-05
Issue:6
Volume:68
Page:o1614-o1615
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ISSN:1600-5368
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Container-title:Acta Crystallographica Section E Structure Reports Online
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language:
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Short-container-title:Acta Cryst E
Author:
Yu Tong,Tian Hai-Yan,Yuan Xiao-Feng,Hu Shu-Zhi,Jiang Ren-Wang
Abstract
The title compound, C24H30O5, is the didehydro product of the steroid hellebrigenin (systematic name: 3β,5,14-trihydroxy-19-oxo-5β-bufa-20,22-dienolide). It consists of three cyclohexane rings (A, B and C), a five-membered ring (D) and a six-membered lactone ring (E). The stereochemistry of the ring junctions are A/B cis, B/C trans and C/D cis. Cyclohexane rings A, B and C have normal chair conformations. The five-membered ring D with the C=C bond adopts an envelope conformation. Lactone ring E is essentially planar with a mean derivation of 0.006 (4) Å and is β-oriented at the C atom of ring D to which it is attached. There is an O—H...O hydrogen bond in the molecule involving the hydroxy groups. In the crystal, O—H...O hydrogen bonds link the molecules into chains propagating along [010]. The chains are linked by C—H...O contacts into a three-dimensional network.
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
Cited by
1 articles.
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