17alpha,21-Dihydroxy-16beta-methylpregna-1,4-diene-3,11,20-trione (meprednisone)

Acta Crystallogr C. 2003 Apr;59(Pt 4):O187-9. doi: 10.1107/s0108270103003184. Epub 2003 Mar 11.

Abstract

The title compound, C(22)H(28)O(5), is a commercial therapeutic agent of the steroid class. Both independent molecules in the asymmetric unit have six-membered A rings that are planar, while the B and C rings adopt normal chair conformations. The five-membered D ring is in a 13beta,14alpha-half-chair conformation, and the B/C and C/D ring junctions are in trans positions. Cohesion in the crystal is provided by O-H.O hydrogen bonds, which generate chains of molecules that are organized in a plane that lies along the crystallographic b axis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Hydrogen Bonding
  • Models, Molecular
  • Molecular Conformation
  • Molecular Structure
  • Prednisone / analogs & derivatives*
  • Prednisone / chemistry*

Substances

  • meprednisone
  • Prednisone