The crystal structure of the title compound (1) has been determined [space group P212121, a = 5.592(3), b = 14.724(8), c = 23.966(10) Å, Z = 4] and refined to R0.046 for 2965 unique reflections. The trend towards longer exocyclic bonds at the acetal centre in compounds with strongly electronegative aglycones is maintained in (1).
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