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rac-(1R,11R,14S,18R)-Methyl 18-hydroxy-19-oxotri­cyclo­[9.7.1.01,14]­nona­decane-11-carboxyl­ate

✍ Scribed by Fresu, Sonia ;Schürmann, Markus ;Preut, Hans ;Eilbracht, Peter

Publisher
International Union of Crystallography
Year
2004
Tongue
English
Weight
181 KB
Volume
60
Category
Article
ISSN
1600-5368

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✦ Synopsis

Single-crystal X-ray study T = 291 K Mean '(C±C) = 0.004 A Ê Disorder in main residue R factor = 0.043 wR factor = 0.071 Data-to-parameter ratio = 15.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

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✍ Fresu, Sonia ;Schürmann, Markus ;Preut, Hans ;Eilbracht, Peter 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 179 KB

Single-crystal X-ray study T = 291 K Mean '(C±C) = 0.003 A Ê R factor = 0.043 wR factor = 0.092 Data-to-parameter ratio = 19.4 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

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The title compound, C~22~H~28~O~8~, was prepared from the natural diterpenoid macrocalyxin J by two steps. It is built up from five fused rings: three six-membered rings and two five-membered rings. Two molecules are present in the asymmetric unit; both independent molecules have the same absolute c