In the title compound, C24H29BrO6, the dihedral angle between the cyclohexenone mean planes is 57.63 (2)° while the dihedral angles between the benzene ring and the cyclohexenone mean planes are 58.42 (2) and 69.08 (3)°. The two cyclohexenone rings both show an envelope conformation, with the C atom bearing two methyl groups as the flap atom in each ring. Two intramolecular O—H⋯O hydrogen bonds occur. In the crystal, molecules are linked via pairs of O—H⋯O hydrogen bonds, forming inversion dimers.
In the title compound, C25H30O6, the two fused cyclohexanone rings have envelope conformations, whereas the central pyran ring is roughly planar [mximum deviation = 0.045 (2) Å]. The pyran and benzene rings are almost perpendicular to each other, making a dihedral angle of 86.32 (2)°. In the crystal, molecules are linked via pairs of O—H⋯O hydrogen bonds, forming inversion dimers.
In the title compound, C25H32O5, the two cyclohexenone rings have envelope conformations with the C atom bearing two methyl groups as the flap atom in each ring. Relatively strong intramolecular O—H⋯O hydrogen bonds are observed.
In the acridinedione moiety of the title compound, C32H37NO4, the central dihydropyridine ring adopts a flattened-boat conformation, with the N atom and the methine C atom displaced from the mean plane of the other four atoms by 0.0513 (14) and 0.1828 (18) Å, respectively. The two cyclohexenone rings adopt envelope conformations, with the tetrasubsituted C atoms as the flap atoms. The 3,4-dimethoxybenzene and benzyl rings are almost normal to the dihydropyridine mean plane, with dihedral angles of 89.47 (9) and 82.90 (11)°, respectively. In the crystal, molecules are linked via a pair of C—H⋯O hydrogen bonds, forming inversion dimers, which are, in turn, linked by C—H⋯O hydrogen bonds, forming slabs lying parallel to (001).
Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.002 Å; R factor = 0.044; wR factor = 0.128; data-to-parameter ratio = 19.7.In the title compound, C 32 H 37 NO 3 , the central dihydropyridine ring adopts a nearly planar flattened-boat conformation, whereas both cyclohexenone rings adopt half-chair conformations. The mean and maximum deviations from the mean plane of the dihydropyridine ring are 0.1252 (9) and 0.188 (1) Å , respectively. The 4-ethoxyphenyl and phenyl rings form dihedral angles of 75.20 (4) and 82.14 (5) with the dihydropyridine mean plane, respectively.
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In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) Å, respectively. The two cyclohexenone rings on opposite sides of the pyran ring each adopt an envelope conformation; the C atom bearing a dimethyl substituent is the flap atom in each case. The mean planes of the pyran ring and the substituent benzene ring subtend a dihedral angle of 86.45 (2)°. In the crystal, molecules are linked into inversion dimers via pairs of C—H...O hydrogen bonds.
In the title compound, C21H23N3O7, the pyrimidinedione ring adopts a screw-boat conformation, whereas the cyclohexenone ring adopts an envelope conformation, with the C atom bearing the methyl groups as the flap atom. The dihedral angle between the mean planes of the pyrimidinedione and cyclohexenone rings is 58.78 (2)°. The pyrimidinedione and cyclohexenone rings form dihedral angles of 59.94 (3) and 54.73 (2)°, respectively, with the 4-nitrophenyl ring. Relatively strong intramolecular O—H⋯O hydrogen bonds are observed. In the crystal, molecules are linked by C—H⋯O hydrogen bonds, forming a chain along the c-axis direction.
Key indicatorsSingle-crystal X-ray study T = 293 K Mean (C-C) = 0.005 Å R factor = 0.062 wR factor = 0.168 Data-to-parameter ratio = 15.9For details of how these key indicators were automatically derived from the article, see
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