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QSAR, QSPR and QSRR in Terms of 3‐D‐MoRSE Descriptors for In Silico Screening of Clofibric Acid Analogues
Author(s) -
Di Tullio Maurizio,
Maccallini Cristina,
Ammazzalorso Alessandra,
Giampietro Letizia,
Amoroso Rosa,
De Filippis Barbara,
Fantacuzzi Marialuigia,
Wiczling Paweł,
Kaliszan Roman
Publication year - 2012
Publication title -
molecular informatics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.481
H-Index - 68
eISSN - 1868-1751
pISSN - 1868-1743
DOI - 10.1002/minf.201200001
Subject(s) - quantitative structure–activity relationship , chemistry , lipophilicity , clofibric acid , molecular descriptor , in silico , loo , chemometrics , computational chemistry , stereochemistry , chromatography , biochemistry , gene
A series of 27 analogues of clofibric acid, mostly heteroarylalkanoic derivatives, have been analyzed by a novel high‐throughput reversed‐phase HPLC method employing combined gradient of eluent’s pH and organic modifier content. The such determined hydrophobicity (lipophilicity) parameters, log k w , and acidity constants, p K a , were subjected to multiple regression analysis to get a QSRR (Quantitative StructureRetention Relationships) and a QSPR (Quantitative Structure‐Property Relationships) equation, respectively, describing these pharmacokinetics‐determining physicochemical parameters in terms of the calculation chemistry derived structural descriptors. The previously determined in vitro log EC 50 values – transactivation activity towards PPARα (human Peroxisome Proliferator‐Activated Receptor α) – have also been described in a QSAR (Quantitative StructureActivity Relationships) equation in terms of the 3‐D‐MoRSE descriptors (3D‐Molecule Representation of Structures based on Electron diffraction descriptors). The QSAR model derived can serve for an a priori prediction of bioactivity in vitro of any designed analogue, whereas the QSRR and the QSPR models can be used to evaluate lipophilicity and acidity, respectively, of the compounds, and hence to rational guide selection of structures of proper pharmacokinetics.