Structure of 6 alpha-methyl-3,20-oxo-1,4,9(11)-pregnatrien-17 alpha-yl acetate.

Z. Gałdecki*, P. Grochulski, Z. Wawrzak, W. L. Duax, P. D. Strong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

C24H30O4, Mr = 382.5, orthorhombic, P2(1)2(1)2(1), a = 13.091 (2), b = 19.711 (1), c = 8.242 (1) A, V = 2126.7 (5) A3, Z = 4, Dx = 1.195 Mg m-3, lambda(Cu K alpha) = 1.54184 A, mu(Cu K alpha) = 0.56 mm-1, F(000) = 824, T = 295 K. Final R = 0.045 for 2446 unique reflections. The planar A ring is bent relative to the rest of the steroid skeleton. The B ring has a typical chair conformation and the C and D rings assume 13 beta,14 alpha-half-chair and 13 beta-envelope conformations, respectively. The conformation of the progesterone side chain is similar to the conformation observed in other 17 alpha-ester pregnanes: C16-C17-C20-O20 torsion angle -27.4 (3) degrees.

Original languageEnglish (US)
Pages (from-to)1498-1500
Number of pages3
JournalActa crystallographica. Section C, Crystal structure communications
Volume46 ( Pt 8)
DOIs
StatePublished - Aug 15 1990

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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