Steiger Scott A, Li Chun, Gates Christina, Natale Nicholas R
Department of Biomedical and Pharmaceutical Sciences, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.
Acta Crystallogr E Crystallogr Commun. 2020 Jan 3;76(Pt 2):125-131. doi: 10.1107/S2056989019017018. eCollection 2020 Feb 1.
The title compound , 2,2'-[(2-nitro-phen-yl)methyl-ene]bis-(3-hy-droxy-5,5-di-methyl-cyclo-hex-2-enone), CHNO, features a 1,3-ketone-enol conformation which is stabilized by two intra-molecular hydrogen bonds. The most prominent inter-molecular inter-actions in compound are C-H⋯O hydrogen bonds, which link mol-ecules into a two-dimensional network parallel to the (001) plane and a chain perpendicular to (11). Both title compounds , ethyl 4-(4-hy-droxy-3,5-di-meth-oxy-phen-yl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexa-hydro-quinoline-3-carb-oxyl-ate, CHNO, and , ethyl 4-(anthracen-9-yl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexa-hydro-quinoline-3-carboxyl-ate, CHNO, share the same structural features, such as a shallow boat conformation of the di-hydro-pyridine group and an orthogonal aryl group attached to the di-hydro-pyridine. Inter-molecular N-H⋯O bonding is present in the crystal packing of both compound and .
标题化合物2,2'-[(2-硝基苯基)亚甲基]双-(3-羟基-5,5-二甲基环己-2-烯酮)，化学式为C₁₅H₁₇NO₅，具有1,3-酮-烯醇构象，该构象通过两个分子内氢键得以稳定。化合物中的主要分子间相互作用为C-H⋯O氢键，这些氢键将分子连接成平行于(001)平面的二维网络以及垂直于(11)的链。两种标题化合物，4-(4-羟基-3,5-二甲氧基苯基)-2,7,7-三甲基-5-氧代-1,4,5,6,7,8-六氢喹啉-3-羧酸乙酯，化学式为C₂₀H₂₅NO₆，以及4-(蒽-9-基)-2,7,7-三甲基-5-氧代-1,4,5,6,7,8-六氢喹啉-3-羧酸乙酯，化学式为C₂₄H₂₃NO₃，具有相同的结构特征，例如二氢吡啶基团的浅船式构象以及连接到二氢吡啶上的正交芳基。分子间N-H⋯O键存在于化合物和的晶体堆积中。
