Acta Cryst. (2008). E64, o1902-o1903 [ doi:10.1107/S1600536808027888 ]
Abstract: The title bicyclic lactone, C19H19NO3, is an intermediate in the synthesis of chiral -methylprolines and branched C-methyl pyrrolidines; the absolute configuration was determined by the use of D-erythronolactone as the starting material. It exhibits no unusual crystal packing features, and each molecule acts as a donor and acceptor for one C-HO hydrogen bond.
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