α<sub>2</sub>-Adrenoceptor Antagonists: Synthesis, Pharmacological Evaluation, and Molecular Modeling Investigation of Pyridinoguanidine, Pyridino-2-aminoimidazoline and Their Derivatives
作者:Brendan Kelly、Michela McMullan、Carolina Muguruza、Jorge E. Ortega、J. Javier Meana、Luis F. Callado、Isabel Rozas
DOI:10.1021/jm501635e
日期:2015.1.22
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]
Acyl amidine and acyl, guanidine substituted biphenyl derivatives
申请人:E. R. Squibb & Sons, Inc.
公开号:US05177097A1
公开(公告)日:1993-01-05
Novel compounds are disclosed having the formula ##STR1## and wherein R.sub.1, R.sub.2 and R.sub.3 are as defined herein. These compounds inhibit the action of angiotensin II and are useful, therefore, for example, as antihypertensive agents.
A mild and efficient method for the preparation of guanidines
作者:Michael A. Poss、Edwin Iwanowicz、Joyce A. Reid、James Lin、Zhengxiang Gu
DOI:10.1016/s0040-4039(00)61092-4
日期:1992.9
A mild and efficientmethod for the preparation of guanidines by reaction of an acylated thiourea with an amine followed by removal of the acyl group(s) from the intermediate acylguanidine is reported.
报道了一种温和有效的制备胍的方法,该方法是通过使酰化的硫脲与胺反应,然后从中间体酰基胍中除去酰基。
A concise synthesis of asymmetrical N,N′-disubstituted guanidines
作者:Daniel H. O’Donovan、Isabel Rozas
DOI:10.1016/j.tetlet.2011.05.132
日期:2011.8
We present a new and concise method for the preparation of asymmetrical N,N′-disubstitutedguanidines starting from thiourea via the reaction of N-Boc-protected N′-alkyl/aryl substituted thioureas with an amine in the presence of mercury(II) chloride and triethylamine.
Guanidine-based α2-adrenoceptor ligands: Towards selective antagonist activity
作者:Daniel H. O'Donovan、Carolina Muguruza、Luis F. Callado、Isabel Rozas
DOI:10.1016/j.ejmech.2014.05.057
日期:2014.7
Depression has been linked to a selective increase in the high affinity conformation of the alpha(2)-adrenergic autoreceptors (alpha 2-ARs) in the human brain as well as to an overexpression of alpha 2-ARs in the hippocampus and cerebral cortex. Thus, the development of novel alpha 2-AR antagonists represents an attractive source of new antidepressants. This paper describes the design, synthesis and pharmacological evaluation of 30 new guanidinium and 2-iminoimidazolidinium as potential alpha 2-AR antagonists. In order to design this new series of alpha 2-AR antagonists, a pharmacophore model was developed using the GALAHAD software. This study suggested that increased substitution in the space surrounding the cationic guanidine moiety might lead selectively to antagonist activity. Following the preparation of compounds incorporating this feature and competitive radioligand binding, [S-35]GTP gamma S functional assays revealed that this structural modification affords exclusively alpha 2-AR antagonists, in contrast with the analogous unsubstituted compounds in which a mixture of antagonist/agonist activities was previously observed. (C) 2014 Elsevier Masson SAS. All rights reserved.