Affiliations 

  • 1 Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
Acta Crystallogr Sect E Struct Rep Online, 2011 Apr 1;67(Pt 4):o773-4.
PMID: 21754066 DOI: 10.1107/S1600536811007306

Abstract

Two independent mol-ecules comprise the asymmetric unit of the title cholestane derivative, C(29)H(49)NO(3) {systematic name: (3S,8S,9S,10R,13R,14S,17R)-17-[(1R)-1,5-dimethyl-hex-yl]-6-hy-droxy-imino-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetra-deca-hydro-1H-cyclo-penta-[a]phenanthren-3-yl ace-tate}. The major differences between the mol-ecules relate to the relative orientations of the terminal acetyl [C-C-O-C torsion angles = -158.8 (3) and -81.7 (3)°] and alkyl groups [C-C-C-C = 168.9 (3) and 65.8 (4)°]. In the crystal, the independent mol-ecules associate via pairs of O-H⋯N hydrogen bonds, forming dimeric aggregates. Supra-molecular layers in the ab plane are mediated by C-H⋯O inter-actions.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.