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12α-Hy-droxy-3,27-dioxooleanano-28,13-lactone.

Hu JY, Wu GG, Xu YQ, Xiao GY, Lei P - Acta Crystallogr Sect E Struct Rep Online (2012)

Bottom Line: The five six-membered rings are all trans-fused.In both independent mol-ecules the D rings adopt a slightly distorted half-chair conformation due the presence of the lactone ring while the other four six-membered rings all adopt chair conformations.The characteristic carbon-carbon double bond of the oleanoic skeleton is absent.

View Article: PubMed Central - HTML - PubMed

Affiliation: Center of Separation Technology, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.

ABSTRACT
There are two independent mol-ecules in the asymmetric unit of the title compound, C(30)H(44)O(5). They comprise a triterpenoid skeleton of five six-membered rings and a five-membered lactone ring. The five six-membered rings are all trans-fused. In both independent mol-ecules the D rings adopt a slightly distorted half-chair conformation due the presence of the lactone ring while the other four six-membered rings all adopt chair conformations. The characteristic carbon-carbon double bond of the oleanoic skeleton is absent. Inter-molecular O-H⋯O hydrogen bonds between the hy-droxy and carbonyl groups occur in the crystal structure.

No MeSH data available.


The two molecules of an asymmetric unit of (I) with the atom-labelling scheme. Displacement ellipsoids are drawn at the 60% probability level and H atoms have been omitted for clarity.
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Fap1: The two molecules of an asymmetric unit of (I) with the atom-labelling scheme. Displacement ellipsoids are drawn at the 60% probability level and H atoms have been omitted for clarity.


12α-Hy-droxy-3,27-dioxooleanano-28,13-lactone.

Hu JY, Wu GG, Xu YQ, Xiao GY, Lei P - Acta Crystallogr Sect E Struct Rep Online (2012)

The two molecules of an asymmetric unit of (I) with the atom-labelling scheme. Displacement ellipsoids are drawn at the 60% probability level and H atoms have been omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3379199&req=5

Fap1: The two molecules of an asymmetric unit of (I) with the atom-labelling scheme. Displacement ellipsoids are drawn at the 60% probability level and H atoms have been omitted for clarity.
Bottom Line: The five six-membered rings are all trans-fused.In both independent mol-ecules the D rings adopt a slightly distorted half-chair conformation due the presence of the lactone ring while the other four six-membered rings all adopt chair conformations.The characteristic carbon-carbon double bond of the oleanoic skeleton is absent.

View Article: PubMed Central - HTML - PubMed

Affiliation: Center of Separation Technology, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.

ABSTRACT
There are two independent mol-ecules in the asymmetric unit of the title compound, C(30)H(44)O(5). They comprise a triterpenoid skeleton of five six-membered rings and a five-membered lactone ring. The five six-membered rings are all trans-fused. In both independent mol-ecules the D rings adopt a slightly distorted half-chair conformation due the presence of the lactone ring while the other four six-membered rings all adopt chair conformations. The characteristic carbon-carbon double bond of the oleanoic skeleton is absent. Inter-molecular O-H⋯O hydrogen bonds between the hy-droxy and carbonyl groups occur in the crystal structure.

No MeSH data available.