Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 2 (February 2013)

organic compounds

Acta Cryst. (2013). E69, o267-o268    [ doi:10.1107/S1600536813001244 ]

(6bS*,14R*,14aR*)-Methyl 14-(4-methyl­phen­yl)-7-oxo-6b,6c,7,12b,14,14a-hexa­hydro-1H-pyrano[3,2-c:5,4-c']dichromene-14a-carboxyl­ate

R. Ponnusamy, V. Sabari, G. Sivakumar, M. Bakthadoss and S. Aravindhan

Abstract: In the title compound, C28H22O6, the chromeno ring system is almost planar, with a dihedral angle between the mean planes of the pyran and benzene rings of 1.87 (8)°. The pyran ring bearing the methyl­phenyl substituent has a half-chair conformation while the other pyran ring has an envelope conformation with the tetra­substituted C atom as the flap. The benzene ring of the chromeno ring system is inclined to the benzene ring fused to the latter pyran ring by 74.66 (9)°. These aromatic rings are inclined to the 4-methyl­phenyl ring by 52.67 (9) and 66.63 (10)°, respectively. In the crystal, mol­ecules are linked via C-H...O hydrogen bonds, forming a two-dimensional network parallel to the bc plane.

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