Received 29 December 2012
In the title compound, C28H33NO4·CH2Cl2, the pyrrolidone ring adopts a twisted envelope conformation and the cyclohexene has a half-chair conformation. In the crystal, weak C-HO hydrogen bonds link the components into chains along .
Data collection: CrysAlis PRO (Oxford Diffraction, 2011); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CV5380 ).
This work was supported by a research grant from the Natural Science Foundation of China (grant No. 21172191). The authors gratefully acknowledge Mr Jiyong Liu and Jianming Gu of Zhejiang University for their kind assistance in the crystal structure analysis and for useful dicussions.
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