Acta Cryst. (2001). E57, o1094-o1095  [ doi:10.1107/S1600536801017482 ]

Futoenone, a neolignan from Magnolia soulangiana

Q. Song, D. R. Billodeaux, F. R. Fronczek and N. H. Fischer

Abstract: In the title compound, (2R,4R,5S,5aR)-rel-(-)-4-(1,3-benzodioxol-5-yl)-2,3,4,5-tetrahydro-7-methoxy-5-methyl-8H-2,5a-methano-benzoepin-8-one, C₂₀H₂₀O₅, the tetrahydrofuran ring has an envelope conformation, and the semiquinone ring is somewhat non-planar, with deviations from coplanarity of up to 0.1603 (13) Å.

Online 20 October 2001

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