Snythesis and structure-activity relationships of indole and benzimidazole piperazines as histamine H-4 receptor antagonists

Terzioglu, N; van Rijn, RM; Bakker, RA; De Esch, IJP; Leurs, R

doi:10.1016/j.bmcl.2004.08.035

Snythesis and structure-activity relationships of indole and benzimidazole piperazines as histamine H-4 receptor antagonists

Terzioglu N., van Rijn R., Bakker R., De Esch I., Leurs R.

BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, vol.14, no.21, pp.5251-5256, 2004 (SCI-Expanded, Scopus)

Publication Type: Article / Article
Volume: 14 Issue: 21
Publication Date: 2004
Doi Number: 10.1016/j.bmcl.2004.08.035
Journal Name: BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.5251-5256
Istanbul University Affiliated: No

Abstract

We describe the structure-activity relationships for a series of ligands structurally related to the recently identified (5-chloro-1H-indol-2-yl)-(4-methyl-piperazin-1-yl)-methanone (1) as histamine H-4 receptor (H4R) antagonists. Furthermore we identified related benzimidazoles as novel lead compounds for the H4R. The ligands have been evaluated by radioligand displacement studies and functional assays for their interaction with both the human histamine H-3 and H-4 receptors and exhibit pK(i) values up to 7.5 at the human H4R. (C) 2004 Elsevier Ltd. All rights reserved.