Goubitz K, Schenk H, Zeelen FJ. Conformational analysis of 20-keto steroids. Single-crystal X-ray structure analysis of 16 alpha,17-epoxy-4-pregnene-3,20-dione.
Steroids 1984;
44:153-8. [PMID:
6537049 DOI:
10.1016/s0039-128x(84)90081-3]
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Abstract
The structure of 16 alpha,17-epoxy-4-pregnene-3,20-dione was determined. The 20-carbonyl group eclipses the C(13)-C(17) bond. No direct correlation between the observed structure and its progestational activity could be inferred from our investigation.
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