Benzimidazoles as NMDA Glycine-Site Antagonists: Study on the Structural Requirements in 2-Position of the Ligand
摘要:
A series of different substituted benzimidazole derivatives has been synthesized and evaluated for the ability to displace [3H]MDL-105,519 to rat cortical membranes. Two benzimidazole-2-carboxylic acids 9 b and 9 c, in this substitution pattern not yet described as glycine antagonists, showed IC50 values of 0.89 microM (9 b) and 38.0 microM (9 c). Replacement of the carboxylate function in 2-position by a sulfonic acid moiety appreciably increased solubility, but decreased the affinity giving evidence for the strong need of the carboxylate group within the ligand. Further structure-activity studies using benzimidazole-2-one derivatives with an acetic acid moiety adjacent to a ring nitrogen revealed new insights into the importance of amide functionalities within the heterocycle for the affinity of antagonist glycine-site ligands.
The present invention relates to octahydropyrrolo[3,4-c]pyrrole derivatives of formula (I):
and to processes for the preparation thereof, compositions containing the same and the uses thereof.
Synthesis and antiviral/antiproliferative activity of some N-sulphonylbenzimidazoles
作者:Laura Garuti、Marinella Roberti、Erik De Clercq
DOI:10.1016/s0960-894x(02)00535-8
日期:2002.10
Some benzimidazolyl sulphones were synthesized and evaluated for their antiviral and antiproliferative properties. Compound 10 displayed significant and selective activity against human cytomegalovirus (CMV), compound 14 showed activity against varicella zoster virus (VZV). The compounds were further evaluated for inhibitory effect on the proliferation of murine leukemia cells and human T-lymphocyte
The present invention relates to octahydropyrrolo[3,4-c]pyrrole derivatives of formula (I):
and to processes for the preparation thereof, compositions containing the same and the uses thereof.
2-(4,5-Dihydroimidazol-2-yl)benzimidazoles as highly selective imidazoline I2/adrenergic α2 receptor ligands
作者:Francieszek Sączewski、Piotr Tabin、Robin J. Tyacke、Alys Maconie、Jarosław Sączewski、Anita Kornicka、David J. Nutt、Alan L. Hudson
DOI:10.1016/j.bmc.2006.05.062
日期:2006.10
2-(4,5-Dihydroimidazol-2-yl)benzimidazoles have been identified as selective imidazoline I-2/alpha(2)-adrenoceptor ligands. 4-Methyl (2) and 4-chloro (4) derivatives display 12 affinity at nanomolar concentration (K-i = 4.4 and 17.7 nM, respectively) and high I-2/alpha(2) selectivity ratio = 4226 and 5649, respectively. An evidence has been obtained that pK(a) value influences considerably the I-2/alpha(2)-selectivity ratio of this class of imidazoline 12 receptor ligands. (c) 2006 Elsevier Ltd. All rights reserved.