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(20S)-20-Acetamido-18-chloro-5α-pregnan-3β-yl acetate.

Benn M, Vohra KN, Parvez M - Acta Crystallogr Sect E Struct Rep Online (2010)

Bottom Line: All the rings are trans-fused.Intra-molecular C-H⋯O and C-H⋯Cl inter-actions occur.The crystal structure is stabilized by inter-molecular N-H⋯O and C-H⋯O inter-actions close contacts occur.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.

ABSTRACT
In the title compound, C(25)H(40)ClNO(3), prepared by the thermolysis of (20S)-O,N-diacetyl-20-amino-N-chloro-3β-hydr-oxy-5α-pregnane, the three six-membered rings adopt chair conformations while the five-membered ring is in an envelope conformation. The ester group attached to ring A is in an equatorial position. All the rings are trans-fused. Intra-molecular C-H⋯O and C-H⋯Cl inter-actions occur. The crystal structure is stabilized by inter-molecular N-H⋯O and C-H⋯O inter-actions close contacts occur.

No MeSH data available.


Lettering of the rings A—D of the title molecule.
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Fap2: Lettering of the rings A—D of the title molecule.


(20S)-20-Acetamido-18-chloro-5α-pregnan-3β-yl acetate.

Benn M, Vohra KN, Parvez M - Acta Crystallogr Sect E Struct Rep Online (2010)

Lettering of the rings A—D of the title molecule.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2983833&req=5

Fap2: Lettering of the rings A—D of the title molecule.
Bottom Line: All the rings are trans-fused.Intra-molecular C-H⋯O and C-H⋯Cl inter-actions occur.The crystal structure is stabilized by inter-molecular N-H⋯O and C-H⋯O inter-actions close contacts occur.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.

ABSTRACT
In the title compound, C(25)H(40)ClNO(3), prepared by the thermolysis of (20S)-O,N-diacetyl-20-amino-N-chloro-3β-hydr-oxy-5α-pregnane, the three six-membered rings adopt chair conformations while the five-membered ring is in an envelope conformation. The ester group attached to ring A is in an equatorial position. All the rings are trans-fused. Intra-molecular C-H⋯O and C-H⋯Cl inter-actions occur. The crystal structure is stabilized by inter-molecular N-H⋯O and C-H⋯O inter-actions close contacts occur.

No MeSH data available.