Received 18 November 2011
The title compound, C14H14BrNO5, has two chiral C atoms. The quaternary C atom in the oxolanone ring has an S configuration, while the adjacent tertiary C atom has an R configuration. The oxolanone ring adopts an envelope conformation, with the flap C atom lying 0.298 (3) Å from the mean plane of the remaining four atoms. In the crystal, molecules are connected into chains along  via weak C-HO hydrogen bonds.
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, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2367 ).
This work was supported by the Zhejiang Provincial Natural Science Foundation of China (No. Y4110373) and the Foundation of Zhejiang Education Committee (No. Y201018458). We are also grateful for the help of Professor Jian-Ming Gu of Zhejiang University.
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