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. 2009 Feb 25;65(Pt 3):o612.
doi: 10.1107/S1600536809006618.

Neoaustin: a meroterpene produced by Penicillium sp

Neoaustin: a meroterpene produced by Penicillium sp

Julio Zukerman-Schpector et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title meroterpene neoaustin {systematic name: (1'S,2'R,3S,7'R,9'S,11'S,12'R)-11'-hydr-oxy-2,2,2',9',12'-penta-methyl-6',15'-dimethyl-ene-2,6-dihydro-13'-oxaspiro-[pyran-3,5'-tetra-cyclo-[7.5.1.0(1,11).0(2,7)]penta-deca-ne]-6,10',14'-trione}, C(25)H(30)O(6), comprises five rings, three six-membered and two five-membered. The absolute configuration was established based on [α(D)] = +166.91° (c 1.21, CH(2)Cl(2)). In the crystal, the mol-ecules are connected into a supra-molecular helical chain via O-H⋯O hydrogen bonds reinforced by C-H⋯O contacts.

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Figures

Fig. 1.
Fig. 1.
The molecular structure of (I) showing atom labelling scheme and displacement ellipsoids at the 30% probability level (arbitrary spheres for the H atoms).
Fig. 2.
Fig. 2.
Detail of the hydrogen bonding in (I). Hydrogen bonds are shown as hollow dashed bonds. See Table 1 for symmetry operations.

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References

    1. Altomare, A., Burla, M. C., Camalli, M., Cascarano, G. L., Giacovazzo, C., Guagliardi, A., Moliterni, A. G. G., Polidori, G. & Spagna, R. (1999). J. Appl. Cryst.32, 115–119.
    1. Bruker (2006). APEX2, COSMO, BIS and SAINT Bruker AXS Inc., Madison, Wisconsin, USA.
    1. Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc.97, 1354–1358.
    1. Farrugia, L. J. (1997). J. Appl. Cryst.30, 565.
    1. Farrugia, L. J. (1999). J. Appl. Cryst.32, 837–838.