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. 2011 Apr 1;67(Pt 4):o846.
doi: 10.1107/S1600536811008609. Epub 2011 Mar 12.

(3R,6R,12R,20S,24R)-20,24-Ep-oxy-dammarane-3,6,12,25-tetra-ol

(3R,6R,12R,20S,24R)-20,24-Ep-oxy-dammarane-3,6,12,25-tetra-ol

Lei Zhang et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound, C(30)H(52)O(5), the three six-membered rings are in chair conformations, the five-membered ring is in an envelope form and the tetra-hydro-furan ring has a conformation inter-mediate between half-chair and sofa. Intra-molecular O-H⋯O hydrogen bonds may influence the conformation of the mol-ecule. In the crystal, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds, forming a three-dimensional network.

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Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound showing ellipsoids drawn at the 30% probability level. H atoms are not shown.

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