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5-Phenyl-3,4,4a,5,6,12c-hexa-hydro-2H-benzo[f]pyrano[3,2-c]quinoline.

ABSTRACT: In the title compound, C(22)H(21)N, the pyridine ring adopts a distorted boat conformation, while the adjacent pyran ring adopts a chair conformation; the heterocyclic rings make a dihedral angle of 40.1 (2)° with each other.

SUBMITTER: Du BX

PROVIDER: S-EPMC3006965 | biostudies-literature |

REPOSITORIES: biostudies-literature

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rac-4a,10b-cis,10b,5c-trans-5-(7-Methyl-2-oxo-2H-chromen-4-yl)-3,4,4a,5,6,10b-hexa-hydro-2H-pyrano[3,2-c]quinoline.

Project description:In the racemic title compound, C(22)H(21)NO(3), the nitro-gen-containing ring of the pyran-oquinoline moiety adopts a slightly distorted half-chair conformation and the oxygen-containing ring adopts a slightly distorted chair conformation. The benzene rings make a dihedral angle of 84.97?(8)°. In the crystal, weak C-H?O inter-actions link the mol-ecules into chains extending along the a-axis direction.

| S-EPMC3569807 | biostudies-other

8-Methyl-4-phenyl-2,3,3a,4,5,9b-hexa-hydro-furo[3,2-c]quinoline.

Project description:The title compound, C(18)H(19)NO, was synthesized from the multi-component one-pot reaction between p-toluidine, benzaldehyde and 2,3-dihydro-furan in the presence of palladium dichloride. There are two mol-ecules in the asymmetric unit. The crystal packing is stabilized by classical inter-molecular N-H?O hydrogen bonds.

| S-EPMC2980039 | biostudies-literature

6-Meth-oxy-2-phenyl-4,4a,6,7,8,8a-hexa-hydro-2H-pyrano[3,2-d][1,3]dioxine-7,8-diyl bis-(4-methyl-benzene-1-sulfonate).

Project description:In the title ?-D-glucopyran-oside derivative, C(28)H(30)O(10)S(2), each heterocyclic ring adopts a chair conformation. In the tri-substituted ring, the meth-oxy and one sulfonate group occupy axial positions, whereas the second sulfonate group occupies an axial position. The phenyl group on the other ring is in an equatorial position. In the crystal, supra-molecular chains propagating along [100] are formed through C-H?O and C-H?? inter-actions.

| S-EPMC3295524 | biostudies-literature

4-(4-Bromo-phen-yl)-2,3,3a,4,5,11c-hexa-hydro-benzo[f]furo[3,2-c]quinoline.

Project description:In the title compound, C(21)H(18)BrNO, both heterocyclic rings, viz. the hydro-pyridine ring and the adjacent hydro-furan ring, adopt envelope conformations. These two heterocycles make a dihedral angle of 37.3?(1)°. The dihedral angle between the hydro-pyridine and benzene rings is 69.6?(1)°. In the crystal, adjacent mol-ecules are linked by pairs of inter-molecular C-H?O hydrogen bonds, forming centrosymmetric dimers.

| S-EPMC3200627 | biostudies-literature

6-Phenyl-5a,6,6a,7,12,13a-hexa-hydro-5H-benzo[6,7]indolizino[3,2-a]pyrrolizine.

Project description:In the title compound, C(23)H(22)N(2), the central pyrrolidine ring adopts an envelope conformation. The benzene ring of the hexa-hydro-pyrroloisoquinoline ring system makes dihedral angles of 83.43?(6) and 61.99?(10)°, respectively, with the phenyl and pyrrole rings. In the crystal structure, weak C-H?? inter-actions are observed.

| S-EPMC2969265 | biostudies-literature

10-Phenyl-6b,7,8,9,9a,10-hexa-hydro-6H-cyclo-penta-[4,5]pyrano[3,2-c]chromen-6,9-dione.

Project description:In the title compound, C(21)H(16)O(4), the dihedral angle between the phenyl ring and the 2H-chromene ring system is 59.8?(2)°. The crystal packing is stabilized by weak ?-? stacking inter-actions [centroid-centroid distances = 3.667?(2)?Å] and inter-molecular C-H?O hydrogen-bonding inter-actions.

| S-EPMC3099813 | biostudies-other

(11aS)-1,5,11,11a-Tetra-hydro-1-benzo-thieno[3,2-f]indolizin-3(2H)-one.

Project description:The absolute configuration of the title compound, C14H13NOS, was assigned from the synthesis and confirmed by the structure determination. There are two independent mol-ecules in the asymmetric unit. The central six-membered ring of the indolizine moiety adopts an envelope conformation, with the greatest deviations from the mean planes being 0.569?(3) and 0.561?(3)?Å for the indolizine bridgehead C atoms of the two mol-ecules. The benzothieno ring attached to the indolizine ring system is planar to within 0.015?(3)?Å in both mol-ecules. In the crystal, weak C-H?O and C-H?? inter-actions lead to the formation of a three-dimensional framework structure.

| S-EPMC3885070 | biostudies-literature

2-Oxo-4-phenyl-1,2,5,6-tetra-hydro-benzo[h]quinoline-3-carbonitrile.

Project description:In the mol-ecule of the title compound, C(20)H(14)N(2)O, the tetra-hydro-benzo[h]quinoline fused-ring system is buckled owing to the ethyl-ene -CH(2)CH(2)- fragment, the benzene ring and the pyridine ring being twisted by 19.7?(1)°. The 4-substituted aromatic ring is bent away from the pyridine ring by 62.9?(1)° in order to avoid crowding the cyanide substituent. In the crystal, two mol-ecules are linked by a pair of N-H?O hydrogen bonds to form a centrosymmetric dimer.

| S-EPMC3200766 | biostudies-literature

2-(2,4-Dichloro-phen-yl)-9-phenyl-2,3-di-hydro-thieno[3,2-b]quinoline.

Project description:In the title compound, C(23)H(15)Cl(2)NS, the quinoline system is almost planar [r.m.s. deviation = 0.013?(2)?Å]. The phenyl group is disordered over two positions with site occupancies of 0.55 and 0.45, and is oriented in a nearly perpendicular configuration to the quinoline ring [the dihedral angles between the quinoline ring and the major and minor disordered components of the phenyl ring are 81.8?(2) and 71.6?(2)°, respectively]. The dihydro-thiene ring adopts an envelope conformation. The dihedral angle between the chloro-phenyl ring and the quinoline system is 79.32?(1)°. In the crystal weak C-H?? inter-actions occur.

| S-EPMC2977236 | biostudies-literature

Ethyl (4aR*,7S*,8S*,8aS*)-1-oxo-7-phenyl-3,4,4a,7,8,8a-hexa-hydro-1H-isochromene-8-carboxyl-ate.

Project description:In the title compound, C(18)H(20)O(4), both the tetra-hydro-pyran-one ring and the cyclo-hexene ring adopt envelope conformations. The crystal packing is stabilized by weak inter-molecular C-H?O hydrogen bonding.

| S-EPMC2979652 | biostudies-literature

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