Received 17 October 2010
The title molecule, C21H17NO4, reveals axial symmetry, with the pyridine N atom located on a crystallographic twofold axis. The molecule is dish-shaped, with dihedral angles between the benzene and pyridine rings of 24.643 (1) and 24.797 (1)°, respectively. The -COO plane and the benzene ring are almost coplanar [dihedral angle = 5.286 (1)°].
Data collection: SMART (Bruker, 1998); cell refinement: SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: KP2283 ).
This work was supported by the National Natural Science Foundation of China (grant No. 21075114), the Science and Technology Development Project of Beijing Education Committee (grant No. KM200910005025) and the Special Environmental Protection Fund for Public Welfare (project No. 201009015).