title: Lipophilicity estimation and characterization of selected steroid derivatives of biomedical importance applying RP HPLC.
abstract: The present paper deals with chromatographic lipophilicity determination of twenty-nine selected steroid derivatives using reversed-phase high-performance liquid chromatography (RP HPLC) combined with two mobile phase, acetonitrile-water and methanol-water. Chromatographic behavior of four groups (triazole and tetrazole, toluenesulfonylhydrazide, nitrile and dinitrile and dione) of selected steroid derivatives was studied. Investigated compounds were grouped using principal component analysis (PCA) according to their logk values for both mobile phases. Grouping was in the very good accordance with the polarity and lipophilicity of the investigated compounds. QSRR (quantitative structure-retention relationship) approach was used to model chromatographic lipophilicity behavior using molecular descriptors. Modeling was performed using linear regression (LR) and multiple linear regression (MLR) methods. The most influential molecular descriptors were lipophilicity descriptors that are important for molecules ability to pass through biological membranes and geometrical descriptors. All established LR-QSRR and MLR-QSRR models were statistically validated by standards, cross- and external validation parameters as well as with two graphical methods. According to all these assessments, MLR models were better for chromatographic lipophilicity prediction. It was shown that chromatographic systems with methanol-water were better for modeling of logk than systems with acetonitrile-water, as well as the systems that contained lower volume fractions of organic component in mobile phase. Modeling was performed in order to obtain lipophilicity profiles of investigated compounds as future drug candidates of biomedical importance.
authors.affiliation: Faculty of Technology Novi Sad, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia.
authors.forename: Lidija R
authors.initials: LR
authors.lastname: Jevrić
authors.affiliation: Faculty of Technology Novi Sad, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia. Electronic address: mkaradza@uns.ac.rs.
authors.forename: Milica Ž
authors.initials: MŽ
authors.lastname: Karadžić
authors.affiliation: Institute of Food Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia.
authors.forename: Anamarija I
authors.initials: AI
authors.lastname: Mandić
authors.affiliation: Faculty of Technology Novi Sad, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia.
authors.forename: Sanja O
authors.initials: SO
authors.lastname: Podunavac Kuzmanović
authors.affiliation: Faculty of Technology Novi Sad, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia.
authors.forename: Strahinja Z
authors.initials: SZ
authors.lastname: Kovačević
authors.affiliation: Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
authors.forename: Andrea R
authors.initials: AR
authors.lastname: Nikolić
authors.affiliation: Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
authors.forename: Aleksandar M
authors.initials: AM
authors.lastname: Oklješa
authors.affiliation: Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
authors.forename: Marija N
authors.initials: MN
authors.lastname: Sakač
authors.affiliation: Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
authors.forename: Katarina M
authors.initials: KM
authors.lastname: Penov Gaši
authors.affiliation: Faculty of Pharmacy, Trg Mladenaca 5, 21000 Novi Sad, Serbia.
authors.forename: Srđan Z
authors.initials: SZ
authors.lastname: Stojanović
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D056148:Chromatography, Reverse-Phase / Q000379:methods*; D008958:Models, Molecular; D025341:Principal Component Analysis / Q000379:methods; D021281:Quantitative Structure-Activity Relationship; D013256:Steroids / Q000032:analysis* / Q000737:chemistry*
chemical_list: D013256:Steroids
keywords: Chemometrics; Drug candidates; Lipophilicity; Liquid chromatography; Quantitative structure retention relationships