%0 Journal Article %T (4R*,4aR*,7aS*)-5-Oxo-6-phenyl-4a,5,6,7,7a,8-hexahydro-4H-furo[2,3-f]isoindole-4-carboxylic acid %A Yuriy I. Horak %A Roman Z. Lytvyn %A Fedor I. Zubkov %A Eugeniya V. Nikitina %J Acta Crystallographica Section E %D 2013 %I International Union of Crystallography %R 10.1107/s160053681300144x %X 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 ¦Ã-carbon atom of the ¦Á-pyrrolidinone ring as the flap. In the crystal, O¡ªH...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¡ªH...¦Ð interactions. %U http://scripts.iucr.org/cgi-bin/paper?S160053681300144X