title: Retention of barbituric acid derivatives on immobilized artificial membrane stationary phase and its correlation with biological activity.
abstract: A series of 30 barbituric acid derivatives were subjected to high-performance liquid chromatography (HPLC) on the 'immobilized artificial membrane' (IAM) column with acetonitrile buffer mobile phase. The retention parameter log k(IAM) was related to the logarithms of partition coefficients determined in octanol-water partition system, log P, to a thin-layer chromatographic (TLC) parameter from partition TLC, R(m0), to an adsorption HPLC retention parameter, log k(0), and to a solubility parameter, delta. It was demonstrated that log k(IAM) correlated significantly to the other parameters of barbiturates determined in partition systems but not to delta. However, log k(IAM) appeared to be a distinctive descriptor of hydrophobicity of barbiturates as compared to the standard log P parameters. The parameter log k(IAM) was shown to correlate with bioactivity data of the agents studied.
authors.affiliation: Department of Organic Chemistry, College of Medicine, Jagiellonian University, Medyczna 9, 30-688 Kraków, Poland.
authors.forename: E
authors.initials: E
authors.lastname: Kepczyńska
authors.forename: J
authors.initials: J
authors.lastname: Bojarski
authors.forename: P
authors.initials: P
authors.lastname: Haber
authors.forename: R
authors.initials: R
authors.lastname: Kaliszan
mesh_terms: D001463:Barbiturates / Q000737:chemistry* / Q000494:pharmacology; D001923:Brain Chemistry / Q000187:drug effects; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002851:Chromatography, High Pressure Liquid; D008567:Membranes, Artificial; D012044:Regression Analysis; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship
chemical_list: D001463:Barbiturates; D008567:Membranes, Artificial