Author/Authors :
Steiger, Scott A. Department of Biomedical and Pharmaceutical Sciences - The University of Montana, USA , Li, Chun Department of Chemistry - Ithaca College, USA , Gates, Christina Department of Biomedical and Pharmaceutical Sciences - The University of Montana, USA , Natale, Nicholas R. Department of Biomedical and Pharmaceutical Sciences - The University of Montana, USA
Abstract :
The title compound I, 2,20 -[(2-nitrophenyl)methylene]bis(3-hydroxy-5,5-dimethylcyclohex-2-enone), C23H27NO6, features a 1,3-ketone–enol conformation which is stabilized by two intramolecular hydrogen bonds. The most prominent intermolecular interactions in compound I are C—HO hydrogen bonds,
which link molecules into a two-dimensional network parallel to the (001) plane
and a chain perpendicular to (111). Both title compounds II, ethyl 4-(4-hydroxy3,5-dimethoxyphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-
carboxylate, C23H29NO6, and III, ethyl 4-(anthracen-9-yl)-2,7,7-trimethyl-5-oxo1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C29H29NO3, share the same
structural features, such as a shallow boat conformation of the dihydropyridine
group and an orthogonal aryl group attached to the dihydropyridine.
Intermolecular N—HO bonding is present in the crystal packing of both
compound II and III.
