(5S*,6R*)‐1,7‐Dioxadispiro[4.0.4.4]tetradecane‐2,8‐dione |
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Authors: | Rafael Roggenbuck Markus Schürmann Hans Preut Peter Eilbracht |
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Abstract: | The title compound, C12H16O4, (I), was prepared by oxidation of (5S*,6R*)‐1,7‐dioxadispiro4.0.4.4]tetradecane‐2,8‐diol using silver(I) carbonate and posesses a cis configuration of the two five‐membered‐ring lactones fused spiro to the six‐membered carbocycle, which has a chair conformation. It represents an exceptional structure for bis‐tetrahydrofuran units, which are interesting building blocks in natural products. The synthesis, spectroscopic data and X‐ray structural analysis are described. The crystal contains discrete molecules separated by normal van der Waals distances. |
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