title: Syntheses and structural study of bile acid amidoalcohols.
abstract: Preparation, structural and thermoanalytical characterization of fourteen N-hydroxyalkyl 5beta-cholan-24-amides have been performed in this study. The utilized techniques include liquid state and CP-MAS 13C NMR spectroscopy, thermogravimetry, differential scanning calorimetry, and also powder and single crystal X-ray crystallography. The results were discussed and compared to each other and also to previous findings on similar compounds. One pure hydrate form was obtained. Six new single crystal structures were determined, including one hydrated chloroform solvate. Decomposition temperatures were found to correlate with the side chain length, and the number of the hydroxyl groups. The spatial direction of the groups in the steroid skeleton was also found to be relevant in predicting the thermal properties of bile acid amidoalcohols studied.
authors.affiliation: Department of Chemistry, University of Jyväskylä, PO Box 35, FIN-40014 Jyväskylä, Finland. arto.valkonen@jyu.fi
authors.forename: Arto
authors.initials: A
authors.lastname: Valkonen
authors.forename: Manu
authors.initials: M
authors.lastname: Lahtinen
authors.forename: Erkki
authors.initials: E
authors.lastname: Kolehmainen
mesh_terms: D000438:Alcohols / Q000138:chemical synthesis* / Q000737:chemistry; D000577:Amides / Q000737:chemistry*; D001647:Bile Acids and Salts / Q000138:chemical synthesis* / Q000737:chemistry; D002152:Calorimetry, Differential Scanning; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D000438:Alcohols; D000577:Amides; D001647:Bile Acids and Salts