Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2011 Aug 1;67(Pt 8):o1876-7.
doi: 10.1107/S160053681102527X. Epub 2011 Jul 2.

9-(4-Hy-droxy-phen-yl)-3,3,6,6-tetra-methyl-4,5,6,9-tetra-hydro-3H-xanthene-1,8(2H,7H)-dione

Hoong-Kun Fun, Wan-Sin Loh, K Rajesh, V Vijayakumar, S Sarveswari

9-(4-Hy-droxy-phen-yl)-3,3,6,6-tetra-methyl-4,5,6,9-tetra-hydro-3H-xanthene-1,8(2H,7H)-dione

Hoong-Kun Fun et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound, C(23)H(26)O(4), the two cyclo-hexene rings adopt envelope conformations whereas the pyran ring adopts a boat conformation. In the crystal, pairs of inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into inversion dimers.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound, showing 50% probability displacement ellipsoids and the atom-numbering scheme.
Fig. 2.
Fig. 2.
The crystal packing of the title compound, viewed along the a axis. H atoms not involved in the intermolecular interactions (dashed lines) have been omitted for clarity.
See this image and copyright information in PMC

References

    1. Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19.
    1. Bruker (2009). APEX2, SAINT and SADABS Bruker AXS Inc., Madison, Wisconsin, USA.
    1. Cosier, J. & Glazer, A. M. (1986). J. Appl. Cryst. 19, 105–107.
    1. Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358.
    1. Hatakeyama, S., Ochi, N., Numata, H. & Takano, S. (1988). Chem. Commun. pp. 1202–1204.