Acta Cryst. (2013). E69, o1526-o1527 [ doi:10.1107/S160053681302480X ]
Abstract: The title compound, C22H28N2O6, crystallizes with one half-molecule in the independent unit, the molecule being located on an inversion centre. The penthyl groups are in the all-trans conformation and an almost planar conformation of the whole molecule is observed [maximum deviation from the least-squares plane through all non-H atoms is 0.0229 (17) Å for an N atom]. The amino groups are involved in intra- and intermolecular hydrogen bonds. Intramolecular hydrogen bonding involving the amino group and ester carbonyl helps to lock the syn conformation of the ester with respect to the amino group. In the crystal, N-HO hydrogen bonding involving the amino group and the furan and ester carbonyl O atoms self-assembles the molecules into a two-dimensional hydrogen-bonded network parallel to (010) that displays interdigital packing sustained by alkyl-alkyl interactions.
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