Coles, S. J. and Hursthouse, M. B.
4,8-Bis(3,4-methylenedioxy)phenyl-3,7-dioxabi-cyclo 3.3.0 octan-2-one
Acta Crystallographica Section E: Structure Reports Online, 57, (6), . (doi:10.1107/S1600536801007437).
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The title compound, C20H16O7, is an intermediate in the total synthesis of (+/-)-asarinin. The molecular structure contains four chiral centres and crystallizes as two independent molecules. The chirality of the two molecules is the same, but they adopt different conformations. The compound is enantiomeric, with the second enantiomer arising from the centrosymmetric nature of the space group.
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