%0 Journal Article
%T (7aR)-1-[(2R,5S,E)-6-Hydroxy-5,6-dimethylhept-3-en-2-yl]-7a-methylhexahydro-1H-inden-4(2H)-one
%A Marcos L. Rivadulla
%A Massene Sene
%A Mar¨ªa Gonz¨¢lez
%A Berta Covelo
%J Acta Crystallographica Section E
%D 2013
%I International Union of Crystallography
%R 10.1107/s1600536812051343
%X The chiral title compound, C19H32O2, contains a [4.3.0]-bicyclic moiety in which the shared C¡ªC bond presents a trans configuration and a side chain in which the C=C double bond shows an E conformation. The conformations of five- and six-membered rings are envelope (with the bridgehead atom bearing the methyl substituent as the flap) and chair, respectively, with a dihedral angle of 4.08 (17)¡ã between the idealized planes of the rings. In the crystal, the molecules are self-assembled via classical O¡ªH...O hydrogen bonds, forming chains along [112]; these chains are linked by weak non-classical C¡ªH...O hydrogen bonds, giving a two-dimensional supramolecular structure parallel to (010). The absolute configuration was established according to the configuration of the starting material.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536812051343