19 research outputs found
3-(6-Benzyloxy-2,2-dimethylperhydrofuro[2,3-d][1,3]dioxolan-5-yl)-5-(4-chlorophenyl)-4-nitro-2-phenyl-2,3,4,5-tetrahydroisoxazole
In the title compound, C29H29ClN2O7, the isoxazole and dioxolane rings adopt envelope conformations, and the furan ring adopts a twisted conformation. The crystal structure is stabilized by intermolecular C—H⋯π interactions between a benzyloxy methylene H atom and the 4-chlorophenyl ring of an adjacent molecule, and by weak non-classical intermolecular C—H⋯O hydrogen bonds. In addition, the crystal structure exhibits a Cl⋯O halogen bond of 3.111 (3) Å, with a nearly linear C—Cl⋯O angle of 160.7 (1)°
3-(6-Benzyloxy-2,2-dimethylperhydrofuro[2,3-d][1,3]dioxol-5-yl)-5-(4-bromophenyl)-2-phenylperhydropyrrolo[3,4-d]isoxazole-4,6-dione
In the title compound, C31H29BrN2O7, the isoxazolidine ring adopts a twist conformation, while the tetrahydrofuran, dioxolone and pyrrole rings adopt envelope conformations. The structure is stabilized by intermolecular C—H⋯O hydrogen bonds and C—H⋯π interactions
[1-(3-Nitrophenyl)-2,3-dihydro-1H-naphtho[1,2-e][1,3]oxazin-3-ylidine]malonaldehyde
The oxazine ring in the title compound, C21H14N2O5, adopts a flattened boat conformation. The nitrophenyl ring and the naphthalene ring system enclose a dihedral angle of 89.2 (1)°. An intramolecular hydrogen bond is formed between the NH group and one of the adjacent carbonyl O atoms. In addition, the NH group forms an intermolecular hydrogen bond to a symmetry equivalent of this carbonyl O atom, connecting the molecules into centrosymmetric dimers. The structure also contains C—H⋯O intermolecular interactions
Diethyl 2-oxo-3-(2-oxo-2,3-dihydro-1H-indol-3-ylidene)butanedioate
The title compound, C16H15NO6, crystallizes with two symmetry–independent molecules in the asymmetric unit. The crystal structure is stabilized by intermolecular C—H⋯O and N—H⋯O hydrogen bonds, and intramolecular C—H⋯O hydrogen bonds. In addition, the crystal structure exhibits two intermolecular C—H⋯π interactions