The use of molecular electrostatic potentials as hydrogen-bonding-donor parameters for QSAR studies

Ghafourian, Taravat and Dearden, John C. (2004) The use of molecular electrostatic potentials as hydrogen-bonding-donor parameters for QSAR studies. FARMACO, 59 (6). pp. 473-479. ISSN 0014-827X. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Hydrogen bonding is an important interaction, which controls solubility, partitioning and transport of drugs and is an important force in drug-receptor interactions. Unfortunately it is difficult to quantify, and so inclusion of hydrogen bonding descriptors into quantitative structure-activity relationships (QSARs) is often restricted to indicator variables. The prime objective of this work was to devise readily accessible hydrogen bonding descriptors by means of theoretical chemistry to use in QSAR studies. Because of the dominantly electrostatic nature of this bond, molecular-electrostatic potential was considered and the highest electrostatic potential on the solvent accessible surface (ESP+) was used as the hydrogen-bonding-donor ability of the molecule. The ability of this descriptor to predict the measured hydrogen bonding parameter of aH 2 was compared with that of the empirically derived atomic charges. The efficiency of ESP+ in a QSAR was also examined. The results suggested that ESP+ was superior to the atomic charge descriptor and that the use of this parameter as the hydrogen bonding parameter in QSAR studies was successful.

Item Type: Article
Subjects: Q Science
Q Science > QD Chemistry
Divisions: Faculties > Science Technology and Medical Studies > Medway School of Pharmacy
Depositing User: Taravat Ghafourian
Date Deposited: 23 Sep 2008 17:08
Last Modified: 20 May 2014 15:25
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