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Acta Cryst. (2005). E61, o2748-o2749  [ doi:10.1107/S1600536805023731 ]


G. R. Clark, K. Y. Tsang and M. A. Brimble

Abstract: The crystal structure of the title compound, C18H18O4, has been investigated to establish the relative stereochemistry at the spiro ring junction. Each of the O atoms adjacent to the junction is an axial substituent of the neighboring ring; the adoption of this conformation is likely to be due to anomeric effects.

Online 30 July 2005

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