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12-Anilinomethyl-9α-hy-droxy-4,8-dimethyl-3,14-dioxatricyclo-[9.3.0.0]tetra-dec-7-en-13-one.

Moumou M, Benharref A, Berraho M, Avignant D, Oudahmane A, Akssira M - Acta Crystallogr Sect E Struct Rep Online (2011)

Bottom Line: In each, the ten-membered ring displays an approximative chair-chair conformation.The dihedral angle between the least-squares planes through the ten- and five-membered rings in the two mol-ecules are similar [22.54 (17) and 23.39 (14)°].In the crystal, mol-ecules are linked by O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds.

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ABSTRACT
The title compound, C(21)H(27)NO(4), was synthesized from 9α-hy-droxy-parthenolide, which was isolated from the chloro-form extract of the aerial parts of Anvillea radiata. The asymmetric unit contains two independent mol-ecules. In each, the ten-membered ring displays an approximative chair-chair conformation. Each of the five-membered rings adopts a flattened envelope conformation, the C(H)-C-C(H) atoms representing the flap lie out of the mean plane through the remaining four atoms by 0.443 (2) and 0.553 (2) Å. The dihedral angle between the least-squares planes through the ten- and five-membered rings in the two mol-ecules are similar [22.54 (17) and 23.39 (14)°]. In the crystal, mol-ecules are linked by O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds.

No MeSH data available.


Molecular structure of the two independent molecules comprising the title compound with the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are represented as small spheres of arbitrary radii.
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Fap1: Molecular structure of the two independent molecules comprising the title compound with the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are represented as small spheres of arbitrary radii.


12-Anilinomethyl-9α-hy-droxy-4,8-dimethyl-3,14-dioxatricyclo-[9.3.0.0]tetra-dec-7-en-13-one.

Moumou M, Benharref A, Berraho M, Avignant D, Oudahmane A, Akssira M - Acta Crystallogr Sect E Struct Rep Online (2011)

Molecular structure of the two independent molecules comprising the title compound with the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are represented as small spheres of arbitrary radii.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3120288&req=5

Fap1: Molecular structure of the two independent molecules comprising the title compound with the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are represented as small spheres of arbitrary radii.
Bottom Line: In each, the ten-membered ring displays an approximative chair-chair conformation.The dihedral angle between the least-squares planes through the ten- and five-membered rings in the two mol-ecules are similar [22.54 (17) and 23.39 (14)°].In the crystal, mol-ecules are linked by O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The title compound, C(21)H(27)NO(4), was synthesized from 9α-hy-droxy-parthenolide, which was isolated from the chloro-form extract of the aerial parts of Anvillea radiata. The asymmetric unit contains two independent mol-ecules. In each, the ten-membered ring displays an approximative chair-chair conformation. Each of the five-membered rings adopts a flattened envelope conformation, the C(H)-C-C(H) atoms representing the flap lie out of the mean plane through the remaining four atoms by 0.443 (2) and 0.553 (2) Å. The dihedral angle between the least-squares planes through the ten- and five-membered rings in the two mol-ecules are similar [22.54 (17) and 23.39 (14)°]. In the crystal, mol-ecules are linked by O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds.

No MeSH data available.