α2-adrenoceptor antagonists: synthesis, pharmacological evaluation, and molecular modeling investigation of pyridinoguanidine, pyridino-2-aminoimidazoline and their derivatives.

Abstract:

:We have previously identified phenylguanidine and phenyl-2-aminoimidazoline compounds as high affinity ligands with conflicting functional activity at the α2-adrenoceptor, a G-protein-coupled receptor with relevance in several neuropsychiatric conditions. In this paper we describe the design, synthesis, and pharmacological evaluation of a new series of pyridine derivatives [para substituted 2- and 3-guanidino and 2- and 3-(2-aminoimidazolino)pyridines, disubstituted 2-guanidinopyridines and N-substituted-2-amino-1,4-dihydroquinazolines] that were found to be antagonists/inverse agonists of the α2-adrenoceptor. Furthermore, the compounds exert their effects at the α2-adrenoceptor both in vitro in human prefrontal cortex tissue and in vivo in rat brain as shown by microdialysis experiments. We also provide a docking study at the α2A- and α2C-adrenoceptor subtypes demonstrating the structural features required for high affinity binding to the receptor.

journal_name

J Med Chem

authors

Kelly B,McMullan M,Muguruza C,Ortega JE,Meana JJ,Callado LF,Rozas I

doi

10.1021/jm501635e

subject

Has Abstract

pub_date

2015-01-22 00:00:00

pages

963-77

issue

2

eissn

0022-2623

issn

1520-4804

journal_volume

58

pub_type

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