Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 4 (April 2013)

organic compounds

Acta Cryst. (2013). E69, o467-o468    [ doi:10.1107/S1600536813005606 ]

The furan­osteroid viridiol

P. F. Andersson, A. Broberg and D. Lundberg

Abstract: The asymmetric unit of the title compound, C20H18O6 (systematic name: 1[beta],3[beta]-dihy­droxy-2[beta]-meth­oxyfuro[4',3',2':4,5,6]-18-norandrosta-8,11,13-triene-7,17-dione), a dihydro derivative of the fungal steroid viridin, contains two mol­ecules with similar conformations. The rings bearing the hy­droxy groups adopt boat conformations. The absolute structure was assigned based on the known chirality of a precursor compound. In the crystal, mol­ecules are linked by O-H...O hydrogen bonds, generating a three-dimensional network and weak C-H...O inter­actions consolidate the packing.

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