Abstract
The title compound, C23H35BrO3, synthesized by esterification and bromination of isosteviol, comprises a fused four-ring system. Two of the six-membered rings adopt a regular chair conformation, whereas the remaining six-membered ring is an unsymmetrical distorted chair. The stereochemistry at the two six-membered ring junctions is trans, while the five-membered ring adopts an envelope conformation.
Highlights
The title compound, C23H35BrO3, synthesized by esterification and bromination of isosteviol, comprises a fused four-ring system
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FJ2269)
Summary
The title compound, C23H35BrO3, synthesized by esterification and bromination of isosteviol, comprises a fused four-ring system. Two of the six-membered rings adopt a regular chair conformation, whereas the remaining six-membered ring is an unsymmetrical distorted chair. The stereochemistry at the two six-membered ring junctions is trans, while the five-membered ring adopts an envelope conformation. Related literature For the pharmacological activity of isosteviol, see: Liu et al (2001); Mizushina et al (2005); Wong et al (2004); Xu et al (2007). See: Cremer & Pople (1975). For the synthesis of isosteviol derivates via esterification and bromination, see: Cai et al (2009); Shi (2010); Wu et al (2009)
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