Nuclear magnetic resonance spectroscopy of 3 beta,7 beta-dihydroxy-5-cholen-24-oic acid multi-conjugates: unusual bile acid metabolites in human urine

Chem Phys Lipids. 2006 Apr;140(1-2):48-54. doi: 10.1016/j.chemphyslip.2006.01.003. Epub 2006 Feb 3.

Abstract

Complete 1H and 13C resonance assignments were made for a new type of 3 beta,7 beta-dihydroxy-5-cholen-24-oic acid doubly conjugated with sulfuric acid at C-3 and N-acetylglucosamine at C-7 and its glycine- and taurine-amidated triple-conjugates by the combined use of several homonuclear and heteronuclear shift-correlated 2D NMR techniques. The effects of sulfation at C-3, N-acetylglucosaminidation at C-7, and aminoacyl amidation at C-24 on the 1H and 13C chemical shifts and signal multiplicity were clarified. The shielding data serving to characterize each of the bile acid multi-conjugates are also discussed.

MeSH terms

  • Bile Acids and Salts / chemistry*
  • Bile Acids and Salts / metabolism
  • Bile Acids and Salts / urine
  • Carbon Isotopes
  • Chemical Phenomena
  • Chemistry, Physical
  • Cholic Acids / chemistry*
  • Humans
  • Magnetic Resonance Spectroscopy / methods
  • Magnetic Resonance Spectroscopy / standards
  • Molecular Conformation
  • Protons
  • Reference Standards
  • Sensitivity and Specificity
  • Sulfuric Acids / chemistry
  • Urine / chemistry*

Substances

  • 3beta,7beta-dihydroxy-5-cholen-24-oic acid
  • Bile Acids and Salts
  • Carbon Isotopes
  • Cholic Acids
  • Protons
  • Sulfuric Acids
  • sulfuric acid