Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 2 (February 2013)

organic compounds

Acta Cryst. (2013). E69, o273-o274    [ doi:10.1107/S160053681300144X ]

(4R*,4aR*,7aS*)-5-Oxo-6-phenyl-4a,5,6,7,7a,8-hexa­hydro-4H-furo[2,3-f]isoindole-4-carb­oxy­lic acid

Y. I. Horak, R. Z. Lytvyn, F. I. Zubkov, E. V. Nikitina, Y. V. Homza, T. Lis, V. Kinzhybalo and M. D. Obushak

Abstract: The asymmetric unit of the title compound, C17H15NO4, contains two independent mol­ecules with similar geometric parameters. In both mol­ecules, the conformation of the cyclo­hexene ring is half-chair, while the pyrrolidinone ring adopts an envelope conformation with the [gamma]-carbon atom of the [alpha]-pyrrolidinone ring as the flap. In the crystal, O-H...O hydrogen bonds between the carb­oxylic and carbonyl groups link alternate independent mol­ecules into chains propagating in the b-axis direction. The crystal packing also features weak C-H...[pi] inter­actions.

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