title: Retention-activity relationship studies of benzodiazepines by micellar liquid chromatography.
abstract: Solute partitioning into lipid bilayers of biological membranes is the basis for drug and metabolite uptake, passive transport across membranes and bioaccumulation. In order to emulate in vitro the partitioning process in the biomembranes, different approaches have been proposed. The use of micellar solutions as mobile phases in reversed-phase liquid chromatography (micellar liquid chromatography, MLC) has proven to be valid in the prediction of the biological activities of local anesthetics, catecholamines and barbiturates. In this paper we focus our attention on benzodiazepines. The retention of benzodiazepines using different concentrations of Brij35 as micellar mobile phase in modified C(18) stationary phase was studied. Quantitative retention-activity relationships (QRAR) in MLC were investigated for these compounds. An adequate correlation between the capacity factors (log k) and the toxicity (log LD(50)) and anxiolitic activity (log ED(50)) of benzodiazepines was obtained.
authors.affiliation: Departamento de Química Analítica, Universidad de Valencia, C/ Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Molero-Monfort
authors.forename: S
authors.initials: S
authors.lastname: Sagrado
authors.forename: R M
authors.initials: RM
authors.lastname: Villanueva-Camañas
authors.forename: M J
authors.initials: MJ
authors.lastname: Medina-Hernández
mesh_terms: D001569:Benzodiazepines / Q000032:analysis* / Q000737:chemistry; D002853:Chromatography, Liquid / Q000379:methods*; D008823:Micelles; D008956:Models, Chemical; D015394:Molecular Structure; D013329:Structure-Activity Relationship
chemical_list: D008823:Micelles; D001569:Benzodiazepines