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ABSTRACT: In the title compound, C(25)H(32)O(7), the 3-hy-droxy-5,5-dimethyl-cyclo-hex-2-enone rings adopt slightly distorted envelope conformations with the two planes at the base of the envelope forming dihedral angles of 57.6 (4) and 53.9 (9)° with the benzene ring. There is an intra-molecular hy-droxy-ketone O-H⋯O inter-action between the two substituted cyclo-hexane rings as well as a short intra-molecular phenol-meth-oxy O-H⋯O inter-action.
Acta Crystallographica Section E Structure Reports Online 01/2011; 67(Pt 2):o492. · 0.35 Impact Factor
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ABSTRACT: In the title compound, C(18)H(22)N(2), which possesses non-crystallographic inversion symmetry, the central piperazine ring adopts a chair conformation. The phenyl rings are not exactly parallel and make a dihedral angle of 1.3 (1)°. No significant inter-molecular contacts are observed in the crystal.
Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 12):o3336. · 0.35 Impact Factor
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ABSTRACT: In the title compound, C(20)H(17)N(3)O(3), the dihedral angles between the central pyridine ring and the two terminal rings are 15.07 (3) and 43.24 (3)°. The dihedral angle between the two terminal rings is 37.49 (4)° In the crystal, inter-molecular amine N-H⋯N(nitrile) hydrogen-bonding inter-actions form inversion dimers, which are linked into chains through amine N-H⋯O(meth-oxy) hydrogen bonds.
Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 11):o2746. · 0.35 Impact Factor
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ABSTRACT: In the title compound, C(19)H(21)NO(4), the dihydro-pyridine ring adopts a distorted screw-boat conformation. The fused cyclo-hexenone ring forms a slightly distorted envelope conformation. The dihedral angle between the mean planes of the benzene and heterocyclic rings is 86.1 (7)°. An intra-molecular C-H⋯O inter-action occurs. In the crystal, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds, forming an infinite chain along the c axis.
Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 11):o2767. · 0.35 Impact Factor
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ABSTRACT: In the title compound, C(16)H(23)N(3)O(10), the galactopyran-oside ring adopts a chair conformation. All the non-H substituents are situated in equatorial positions. There are short intramol-ecular C-H⋯O contacts and an intermolecular C-H⋯O inter-action in the structure.
Acta Crystallographica Section E Structure Reports Online 01/2009; 65(Pt 11):o2651. · 0.35 Impact Factor
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ABSTRACT: The mol-ecule of the title compound, C(9)H(8)Br(2)O(3), is stabilized by an intra-molecular O-H⋯O inter-action. Inter-molecular C-H⋯O inter-actions connect mol-ecules into a two-dimensional array in the bc plane; connections between these are afforded by π-π stacking inter-actions [centroid-centroid distance 3.596 (5) Å].
Acta Crystallographica Section E Structure Reports Online 01/2009; 65(Pt 7):o1489. · 0.35 Impact Factor
