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Acta Cryst. (2012). E68, o112  [ doi:10.1107/S1600536811051786 ]

rac-Diethyl 5-oxo-2-[(2,4,4-trimethylpentan-2-yl)amino]-4,5-dihydropyrano[3,2-c]chromene-3,4-dicarboxylate

S. A. Inglebert, K. Sethusankar, Y. Arun and P. T. Perumal

Abstract: The title compound, C26H33NO7, comprises a racemic mixture of asymmetric molecules containing one stereogenic centre. The dihedral angle between the mean planes of the fused pyran ring and the coumarin ring system is 8.12 (14)°. The molecular structure features a short N-H...O contact, which generates an S(6) ring motif. The crystal packing are stabilized by C-H...O interactions.

Online 14 December 2011

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