7
Views
6
CrossRef citations to date
0
Altmetric
Original Article

Synthesis and Three-Dimensional Quantitative Structure-Activity Relationship Analysis of H3 Receptor Antagonists Containing a Neutral Heterocyclic Polar Group

, , , , , , , , & show all
Pages 65-79 | Published online: 04 Dec 2011
 

Abstract

Three-dimensional quantitative structure-activity relationship (3D-QSAR) analysis was applied to a series of H3receptor antagonists characterized by an imidazole ring, an alkyl spacer, and a heterocyclic polar moiety containing an imidazole or a thiazole ring, with a view to investigate the requirements for H3receptor affinity on rat cortex membranes. The compounds were aligned based on the hypothesis that the presence of a H-bond donor group in the polar portion of the molecule can increase H3receptor affinity. The 3D-QSAR analysis, which was performed using both the CoMFA and CoMSIA protocols, revealed that the presence of a H-bond donor group is not statistically relevant for H3receptor affinity. Based on this result, another alignment was adopted that took into consideration the structural features common to all compounds, namely the imidazole ring and the N atom with a free lone pair in the polar portion. The 3D-QSAR models thus obtained showed that H3receptor affinity is modulated by the position and direction of the intermolecular interaction elicited by the polar group in the ligands.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.