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Acta Cryst. (2013). E69, o453
[ doi:10.1107/S1600536813005138 ]

(1'S,4'S)-5-(2,5-Dimethylphenyl)-4'-methoxy-6-oxa-3-azaspiro[bicyclo[3.1.0]hexane-2,1'-cyclohexan]-4-one

X.-R. He, B.-R. Xu, J.-L. Cheng and J.-H. Zhao

Abstract: In the title compound, C18H23NO3, the cyclohexane ring has a chair conformation. The oxirane plane (OCC) makes a dihedral angle of 76.15 (13)° with that of the pyrrolidine ring to which it is fused. The mean plane of the cyclohexane ring and the benzene ring are almost normal to the pyrrolidine ring, with dihedral angles of 88.47 (8) and 77.85 (8)°, respectively. In the crystal, molecules are linked via pairs of N-H...O hydrogen bonds, forming inversion dimers. These dimers are linked via pairs of C-H...O hydrogen bonds, forming chains along the a-axis direction.


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