A series of piperazin-1-yl substituted unfused heterobiaryls was synthesized as ligands of the 5-HT7 receptors. The goal of this project was to elucidate the structural features that affect the 5-HT7 binding affinity of this class of compounds represented by the model ligand 4-(3-furyl)-2-(4-methylpiperazin-1-yl)pyrimidine (2). The SAR studies included systematical structural changes of the pyrimidine
for the synthesis of complexes with physical properties. We observed that the use of 3-, 4- or 5-bromo-2-chloropyridines allows the synthesis of a wide variety of heteroarylated 2-arylpyridines by means of successive directarylation and Suzukicoupling. For these two reactions, an air-stable catalyst associated to a cheap and nontoxic base was employed as the catalyst. Moreover, a wide range of heteroarenes
IMAGING AGENTS AND THEIR USE FOR THE DIAGNOSTIC IN VIVO OF NEURODEGENERATIVE DISEASES, NOTABLY ALZHEIMER'S DISEASE AND DERIVATIVE DISEASES
申请人:Catoen Sarah
公开号:US20120263646A1
公开(公告)日:2012-10-18
Disclosed are new imaging agents and their use for the in vivo diagnostic of neurodegenerative diseases, notably Alzheimer's disease and related diseases.
本发明涉及新的成像剂及其用于体内诊断神经退行性疾病,尤其是阿尔茨海默病和相关疾病的应用。
Pyrrolopyrazine kinase inhibitors
申请人:Hendricks Robert Than
公开号:US08518945B2
公开(公告)日:2013-08-27
The present invention relates to the use of novel pyrrolopyrazine derivatives of Formula I,
wherein the variables n, p, q, Q, X, X′ and Y are defined as described herein, which inhibit JAK and SYK and are useful for the treatment of auto-immune and inflammatory diseases.
Copper-Catalyzed Hiyama Coupling of (Hetero)aryltriethoxysilanes with (Hetero)aryl Iodides
作者:Santosh K. Gurung、Surendra Thapa、Adarsh S. Vangala、Ramesh Giri
DOI:10.1021/ol402701x
日期:2013.10.18
A Cu-catalyzed Hiyama coupling was achieved, which proceeds in the absence of an ancillary ligand for aryl-heteroaryl and heteroaryl-heteroaryl couplings. A P,N-ligand is required to obtain the best product yields for aryl-aryl couplings. In addition to facilitating transmetalation, CsF is also found to function as a stabilizer of the [CuAr] species, potentially generated as an intermediate after transmetalation of aryltriethoxysilanes with Cu-catalysts in the absence of ancillary ligands.