Antinociceptive and antiinflammatory activities and QSAR studies on 2-substituted-4,5-diphenyl-1H-imidazoles
作者:A. Puratchikody、Mukesh Doble
DOI:10.1016/j.bmc.2006.10.025
日期:2007.1
This paper describes the pharmacological evaluation pertaining to antinociceptive (hot plate and tail flick) and antiinflammatory (based on Carrageenan-induced paw oedema) activities, and QSAR studies on 2-substituted-4,5-diphenyl-IH-imidazoles. Compounds with phenyl substitution with -F, -Cl, -NH2, -N(CH3)(2), -OH and -OCH3 at the p-position showed higher activity than the other substitutions in all the three studies. QSARs developed for the 60 and 120 s hot plate data indicate that 2 2 the models for both the cases not only fit the data very well (R-2 > 0.9, R-adj(2) > 0.86), but also have very good predictive capability (q(2) > 0.81). The descriptors used in the model relate to surface area, volume, dipole moment and ADME properties of the molecule. Good QSARs for the 60 and 120 s tail flick data are developed. The models fit the data well (R-2 > 0.8, R-2 d > 0.74), and in addition have good predictive capability (q(2) > 0.66). Surface area, specifically polar surface area, HOMO and lecular connectivity index appear in the models. Very good QSAR model is developed for the antimflammatory data (R-2 = 0.86, R-adj(2) = 0.822 and q(2) = 0.64) with aqueous solubility, number of hydrogen bond donor groups, surface area and principal moment of inertia as the molecular descriptors. (c) 2006 Elsevier Ltd. All rights reserved.