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In the title compound, C18H20BrNO3, the oxazolidine ring adopts an envelope conformation with the N atom at the flap position. The mean plane of oxazolidine ring makes dihedral angles of 82.96 (13) and 70.97 (12)°, respectively, with the phenyl and benzene rings. In the crystal, adjacent molecules are connected via O—H
O and C—HO hydrogen bonds and C—Hπ interactions into a zigzag chain along the b axis.
O and C—HO hydrogen bonds and C—Hπ interactions into a zigzag chain along the b axis.organic compoundsOpen access
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In the crystal structure of the title compound, C15H20N2O3S, the hydroxy group is involved in the formation of O—HN hydrogen bonds, which link two molecules into a centrosymmetric dimer. Weak C—HO hydrogen bonds further link these dimers into chains propagating along the a axis. The crystal packing exhibits π–π interactions between the five- and six-membered rings of neighbouring molecules [centroid–centroid distance = 3.819 (2) Å] and short intermolecular SS contacts of 3.495 (1) Å.
N hydrogen bonds, which link two molecules into a centrosymmetric dimer. Weak C—HO hydrogen bonds further link these dimers into chains propagating along the a axis. The crystal packing exhibits π–π interactions between the five- and six-membered rings of neighbouring molecules [centroid–centroid distance = 3.819 (2) Å] and short intermolecular SS contacts of 3.495 (1) Å.organic compoundsOpen access
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In the title molecule, C19H20N2O4·H2O, the benzimidazole ring system is essentially planar [maximum deviation = 0.013 (11) Å] and is inclined to the 4-methoxyphenyl ring by 30.98 (5)°. In the crystal, O—HO and O—HN hydrogen bonds involving the water molecule link neighbouring molecules, forming a two-dimensional network lying parallel to the bc plane. There are also C—Hπ and π–π interactions present. The latter involve inversion-related benzimidazole rings with centroid–centroid distances of 3.5552 (8) and 3.7466 (8) Å.
O and O—HN hydrogen bonds involving the water molecule link neighbouring molecules, forming a two-dimensional network lying parallel to the bc plane. There are also C—Hπ and π–π interactions present. The latter involve inversion-related benzimidazole rings with centroid–centroid distances of 3.5552 (8) and 3.7466 (8) Å.organic compoundsOpen access
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The asymmetric unit of the title compound, C30H48ClN3O, contains two molecules, A and B. In both molecules, the three cyclohexane rings in the steroid fused ring systems adopt chair conformations, while the cyclopentane rings adopt envelope and twist conformations in molecules A and B, respectively. In molecule B, the cyano group is disordered over two orientations with refined site-occupancies of 0.593 (8) and 0.407 (8). An intramolecular C—HN interaction forms an S(10) ring in both molecules. In the crystal, molecules are linked by N—HO, C—HO and C—HN interactions, resulting is chains propagating along the a-axis direction.
N interaction forms an S(10) ring in both molecules. In the crystal, molecules are linked by N—HO, C—HO and C—HN interactions, resulting is chains propagating along the a-axis direction.organic compoundsOpen access
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In the title compound, C14H18N2O3, the carboxylic group is tilted by 12.00 (4)° with respect to the mean plane throught the benzimidazole ring system. The alcohol and carboxyl hydroxy groups are involved in intermolecular O—HO and O—HN hydrogen bonds, forming a two-dimensional network extending parallel the ab plane. The network is further stabilized by weak C—HO interactions. The sec-butyl group is disordered over two sets of sites with refined occupancies of 0.484 (4) and 0.516 (4).
O and O—HN hydrogen bonds, forming a two-dimensional network extending parallel the ab plane. The network is further stabilized by weak C—HO interactions. The sec-butyl group is disordered over two sets of sites with refined occupancies of 0.484 (4) and 0.516 (4).
