title: High-performance liquid chromatographic separation of bile acids and bile alcohols diastereoisomeric at C-25.
abstract: The high-performance liquid chromatographic separation of the 25R and 25S diastereoisomers of the bile alcohols 5 beta-cholestane-3 alpha,7 alpha,26-triol and 5 beta-cholestane-3 alpha,7 alpha, 12 alpha, 26-tetrol and the bile acids, 3 alpha,7 alpha-dihydroxy-5 beta-cholestane-26-oic acid and 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestane-26-oic acid is described. A Radial-Pak microBondapak C18 reversed-phase cartridge was used for the separations and elutions were carried out with acetonitrile-water-methanol-acetic acid mixtures. All eight diastereoisomeric compounds showed baseline separation when up to 200 micrograms of the isomeric mixtures were injected into the column and the method can be used for isolation of pure diastereoisomers of these bile acids and bile alcohols.
authors.affiliation: Department of Medicine, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark 07103.
authors.forename: A K
authors.initials: AK
authors.lastname: Batta
authors.forename: G
authors.initials: G
authors.lastname: Salen
authors.forename: R
authors.initials: R
authors.lastname: Arora
authors.forename: S
authors.initials: S
authors.lastname: Shefer
authors.forename: M
authors.initials: M
authors.lastname: Batta
mesh_terms: D000489:Alligators and Crocodiles; D000818:Animals; D001646:Bile / Q000737:chemistry*; D001647:Bile Acids and Salts / Q000737:chemistry / Q000302:isolation & purification*; D002777:Cholestanols / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D013237:Stereoisomerism
chemical_list: C000986:3,7-dihydroxycholestan-26-oic acid; D001647:Bile Acids and Salts; D002777:Cholestanols; C022069:3,7,12-trihydroxycholestan-26-oic acid