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(3aR,6S,7aR)-7a-Bromo-2-[(4-methyl-phen-yl)sulfon-yl]-1,2,3,6,7,7a-hexa-hydro-3a,6-ep-oxy-isoindole.

ABSTRACT: In the title compound, C(15)H(16)BrNO(3)S, the boat form of the six-membered ring is almost symmetrical with respect to the ep-oxy bridge. The two five-membered rings generated by the ep-oxy bridge of the six-membered ring adopt envelope conformations, whereas the N-containing five-membered ring adopts a twisted conformation. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds.

SUBMITTER: Kosar B

PROVIDER: S-EPMC3099917 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(3aR,6S,7aR)-7a-Bromo-2-methyl-sulfonyl-1,2,3,6,7,7a-hexa-hydro-3a,6-ep-oxy-isoindole.

Project description:In the title compound, C(9)H(12)BrNO(3)S, the two tetra-hydro-furan rings adopt envelope conformations, the pyrrolidine ring adopts a half-chair conformation and the six-membered ring is in a boat conformation. In the crystal, weak inter-molecular C-H?O hydrogen bonds link the mol-ecules into R(2) (2)(8) and R(2) (2)(14) rings along the b-axis direction.

| S-EPMC3120297 | biostudies-literature

(3aR*,6S*,7aR*)-7a-Chloro-6-methyl-2-(4-methyl-phenyl-sulfon-yl)-2,3,3a,6,7,7a-hexa-hydro-3a,6-ep-oxy-1H-isoindole.

Project description:In the title compound, C(16)H(18)ClNO(3)S, the six-membered ring has a boat conformation. The two five-membered rings with the bridging O atom adopt envelope conformations, whereas the N-containing five-membered ring adopts a twisted conformation. In the crystal, C-H?O hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC3344053 | biostudies-literature

(3aR,6S,7aR)-7a-Chloro-2-[(4-nitro-phen-yl)sulfon-yl]-1,2,3,6,7,7a-hexa-hydro-3a,6-ep-oxy-iso-indole.

Project description:In the title compound, C14H13ClN2O5S, the chlorine-substituted tetrahydrofuran ring adopts a twist conformation and the other tetra-hydro-furan ring an envelope conformation with the O atom as the flap. The pyrrolidine ring adopts a twist conformation. In the crystal, C-H?O hydrogen bonds link the mol-ecules into zigzag chains running along the b-axis direction.

| S-EPMC3790416 | biostudies-literature

(3aR,6S,7aR)-7a-Chloro-6-methyl-2-(4-nitro-phenyl-sulfon-yl)-1,2,3,6,7,7a-hexa-hydro-3a,6-ep-oxy-iso-indole.

Project description:In the title compound, C15H15ClN2O5S, the tetra-hydro-furan ring adopts an envelope conformation with the O atom as the flap. The pyrrolidine ring adopts an envelope conformation with the chlorine-substituted C atom as the flap. In the crystal, two types of C-H?O hydrogen bonds generate R (2) 2(20) and R (4) 4(26) rings, with adjacent rings running parallel to ac plane. Further C-H?O hydrogen bonds form a C(6) chain, linking the mol-ecules in the b-axis direction.

| S-EPMC3884300 | biostudies-literature

(3aR*,6S*,7S*,7aR*)-2-(4-Methoxy-benz-yl)-7-(4-nitro-phen-yl)-6-phenyl-3a,6,7,7a-tetra-hydro-isoindolin-1-one.

Project description:The title compound, C(28)H(26)N(2)O(4), crystallizes as a racemate with four stereogenic centers. In the molecule, the pyrrolidone ring adopts an envelope conformation and the cyclo-hexene ring has a twisted envelope conformation. In the crystal structure, mol-ecules are linked by weak inter-molecular C-H?O hydrogen bonds.

| S-EPMC2979435 | biostudies-literature

Crystal structure and Hirshfeld surface analysis of (RS)-3-hy-droxy-2-{[(3aRS,6RS,7aRS)-2-(4-methyl-phenyl-sulfon-yl)-2,3,3a,6,7,7a-hexa-hydro-3a,6-ep-oxy-1H-isoindol-6-yl]meth-yl}isoindolin-1-one.

Project description:The title compound, C24H24N2O5S, crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. In the central ring systems of both mol-ecules, the tetra-hydro-furan rings adopt envelope conformations, the pyrrolidine rings adopt a twisted-envelope conformation and the six-membered ring is in a boat conformation. In mol-ecules A and B, the nine-membered groups attached to the central ring system are essentially planar (r.m.s. deviations of 0.002 and 0.003 Å, respectively). They form dihedral angles of 64.97 (9) and 56.06 (10)°, respectively, with the phenyl rings. In the crystal, strong inter-molecular O-H⋯O hydrogen bonds and weak inter-molecular C-H⋯O contacts link the mol-ecules, forming a three-dimensional network. In addition weak π-π stacking inter-actions [centroid-to centroid distance = 3.7124 (13) Å] between the pyrrolidine rings of the nine-membered groups of A mol-ecules are observed. Hirshfeld surface analysis and two-dimensional fingerprint plots were used to qu-antify the inter-molecular inter-actions present in the crystal, indicating that the environments of the two mol-ecules are very similar. The most important contributions for the crystal packing are from H⋯H (55.8% for mol-ecule A and 53.5% for mol-ecule B), O⋯H/H⋯O (24.5% for mol-ecule A and 26.3% for mol-ecule B) and C⋯H/H⋯C (12.6% for mol-ecule A and 15.7% for mol-ecule B) inter-actions.

| S-EPMC8061098 | biostudies-literature

(3aS,4S,6S,7aR)-Hexahydro-3a,5,5-trimethyl-2-phenyl-4,6-methano-1,3,2-benzodioxaborole.

Project description:The mol-ecule of the title compound, C(16)H(21)BO(2), comprises a chiral fused tricyclic system containing five-membered (1,3,2-dioxaborolane), six-membered (cyclo-hexa-ne) and four-membered (cyclo-butane) rings. The 1,3,2-dioxaborolane ring is almost planar (r.m.s. deviation = 0.035?Å), and the syn H and Me substituents at this ring are in an eclipsed conformation. The cyclo-hexane and cyclo-butane rings adopt sofa and butterfly conformations, respectively. The B atom has a trigonal-planar configuration (sum of the bond angles = 360.0°). The phenyl ring is practically coplanar with the 1,3,2-dioxaborolane ring [dihedral angle between the ring planes = 1.96?(8)°]. The absolute structure was determined from the known configuration of (+)-pinanediol which was used in the synthesis. In the crystal, weak C-H??(Ph) inter-actions occur.

| S-EPMC3515203 | biostudies-other

Crystal structure of rac-(3aR,4S,5aR,6S,9R,10aS,10bR)-3a,5a,9-tri-methyl-tetra-deca-hydro-6,9-ep-oxy-cyclo-hepta-[e]inden-4-ol monohydrate.

Project description:The title hydrate, C17H28O2·H2O, was synthesized in order to determine the relative configuration of the tetra-cyclic framework. The fused 5,6,7-tricarbocyclic core exhibits an entire cis-annulation, featuring a 1,4-cis-relation of the angular methyl groups in the six-membered ring. The oxa bridge of the ep-oxy-cyclo-heptane moiety is oriented towards the concave face of the boat-shaped mol-ecule, whereas the angular methyl groups are directed towards the convex face. The asymmetric unit of the crystal contains two nearly identical formula units, which are related via a pseudo-centre of symmetry. The structure could be solved in the space groups I-4 and I41/a. The refinement in the acentric space group, however, gave significantly better results and these are used in this paper. O-H⋯O hydrogen bonds are observed between the organic mol-ecules, between the organic mol-ecules and the water mol-ecules, and between the water mol-ecules, forming a chain along the c-axis direction.

| S-EPMC4555390 | biostudies-literature

(7aR)-1-[(2R,5S,E)-6-Hy-droxy-5,6-dimethyl-hept-3-en-2-yl]-7a-methyl-hexa-hydro-1H-inden-4(2H)-one.

Project description:The chiral title compound, C(19)H(32)O(2), contains a [4.3.0]-bicyclic moiety in which the shared C-C bond presents a trans configuration and a side chain in which the C=C double bond shows an E conformation. The conformations of five- and six-membered rings are envelope (with the bridgehead atom bearing the methyl substituent as the flap) and chair, respectively, with a dihedral angle of 4.08?(17)° between the idealized planes of the rings. In the crystal, the mol-ecules are self-assembled via classical O-H?O hydrogen bonds, forming chains along [112]; these chains are linked by weak non-classical C-H?O hydrogen bonds, giving a two-dimensional supra-molecular structure parallel to (010). The absolute configuration was established according to the configuration of the starting material.

| S-EPMC3569753 | biostudies-literature

(2S*,3S*,3aS*,6S*,7aR*)-3-Hy-droxy-2-[(2R*,3S*)-3-isopropyl-oxiran-2-yl]-3,6-dimethyl-3,3a,5,6,7,7a-hexa-hydro-1-benzofuran-4(2H)-one.

Project description:In the title compound, C(15)H(24)O(4), the six-membered ring shows a distorted chair conformation and the five-membered ring adopts an envelope conformation with the C atom bearing the methyl and OH groups as the flap. In the crystal, O-H?O hydrogen bonds link the mol-ecules into chains running along the a-axis direction.

| S-EPMC3470321 | biostudies-literature

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