Received 21 March 2013
In the title compound, C20H25NO5, the dihydropyridine ring adopts a flattened boat conformation. The methoxyphenyl ring is almost perpendicular to the mean plane of the pyridine ring [dihedral angle = 88.42 (3)°]. The two carbonyl units adopt a synperiplanar conformation with respect to the double bonds in the dihydropyridine ring. In the crystal, molecules are connected by N-HO hydrogen bonds into R44(24) tetrameric rings. A region of disordered electron density, located at the center of four adjacent molecules, was treated with the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148-155]. It is probably the result of traces of the solvent of crystallization and was not taken into account during the structure refinement.
Data collection: PROCESS-AUTO (Rigaku, 2006); cell refinement: PROCESS-AUTO; data reduction: CrystalStructure (Rigaku, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2102).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2475 ).
This work was supported by the Zhejiang Provincial Natural Science Foundation of China (No. Y4110373). We are also grateful for the help of Professor Jian-Ming Gu of Zhejiang University.
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.
Franke, P. T., Johansen, R. L., Bertelsen, S. & Jorgensen, K. A. (2008). Chem. Asian J. 3, 216-224.
Fun, H.-K., Hemamalini, M., Reddy, B. P., Vijayakumar, V. & Sarveswari, S. (2012). Acta Cryst. E68, o287-o288.
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.
Kapoor, K., Gupta, V. K., Kant, R., Pawar, M. P. & Joshi, H. S. (2011). Acta Cryst. E67, o2979.
Rigaku (2006). PROCESS_AUTO. Rigaku Corporation, Tokyo, Japan.
Rigaku (2007). CrystalStructure. Rigaku Americas, The Woodlands, Texas, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.
Takemoto, Y., Yoshida, K., Inokuma, T. & Takasu, K. (2010). Synlett, pp. 1865-1869.