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Redetermination of 5?-androstane-3,17-dione.


ABSTRACT: The structure of the title compound, C(19)H(28)O(2), has been redermined at 295?(2)?K, with much improved precision. The structure and mol-ecular packing of the title compound was first reported by Coiro et al. [Acta Cryst. (1973). B29, 1404-1409] by means of potential-energy calculations. The cell parameters in this study differ considerably in space group C2. It is a derivative of testosterone and consists of a cyclo-penta-none ring (A) fused to to successive cyclo-hexane (B and C) and cyclo-hexa-none (D) rings. The three cyclo-hexa-none rings are in slightly distorted boat configurations and the cyclo-penta-none ring is a distorted half-chair. The crystal packing is stabilized by weak inter-molecular C-H?O inter-actions involving O atoms from each of the cyclo-hexa-none and cyclo-penta-none rings and H atoms from each of their respective rings.

SUBMITTER: Jasinski JP 

PROVIDER: S-EPMC2979654 | biostudies-literature | 2010 May

REPOSITORIES: biostudies-literature

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Redetermination of 5α-androstane-3,17-dione.

Jasinski Jerry P JP   Butcher Ray J RJ   Hakim Al-Arique Q N M QN   Yathirajan H S HS   Narayana B B  

Acta crystallographica. Section E, Structure reports online 20100529 Pt 6


The structure of the title compound, C(19)H(28)O(2), has been redermined at 295 (2) K, with much improved precision. The structure and mol-ecular packing of the title compound was first reported by Coiro et al. [Acta Cryst. (1973). B29, 1404-1409] by means of potential-energy calculations. The cell parameters in this study differ considerably in space group C2. It is a derivative of testosterone and consists of a cyclo-penta-none ring (A) fused to to successive cyclo-hexane (B and C) and cyclo-h  ...[more]

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