Synthesis and receptor assay of aromatic–ethynyl–aromatic derivatives with potent mGluR5 antagonist activity
摘要:
Noncompetitive antagonists of the human metabotropic glutamate receptor subtype 5 (mGluR5) have been implicated as potential therapeutics for the treatment of a variety of nervous system disorders, including pain, anxiety, and drug addiction. To discover novel noncompetitive antagonists to the mGluR5, we initiated an SAR study around the known lead compounds MPEP and M-MPEP. Our results pointed out the critical role of the para position of the two aromatic rings, which leads to inactive products and permitted the discovery of potent mGluR5 antagonists (e.g., 16, 25, 28, 34 IC50 = 13.5, 11.9, 21, 15nM, respectively). (C) 2004 Elsevier Ltd. All rights reserved.
A significant substituent effect on the regioselectivity in addition of alkynes to 3-substituted pyridines
作者:Shinji Yamada、Aya Toshimitsu、Yasuko Takahashi
DOI:10.1016/j.tet.2009.01.022
日期:2009.3
A substituent at the 3-position on a pyridine ring significantly affects the regioselectivity during the addition of alkynes to pyridinium salts. When the substituent is an electron-withdrawing group, 1,6-adducts are predominantly produced, whereas, 1,2-adducts become the major products when the substituent is an electron-donating group. The changes in the regioselectivity depending on the substituent
Phosphine-free cobalt pincer complex catalyzed <i>Z</i>-selective semi-hydrogenation of unbiased alkynes
作者:Vinod G. Landge、Jayaraman Pitchaimani、Siba P. Midya、Murugan Subaramanian、Vedichi Madhu、Ekambaram Balaraman
DOI:10.1039/c7cy01994g
日期:——
Herein, we report a novel, molecularly defined NNN-type cobalt pincer complexcatalyzed transfer semi-hydrogenation of unbiased alkynes to Z-selective alkenes. This unified process is highly stereo- and chemo-selective and exhibits a broad scope as well as wide functional group tolerance. Ammonia-borane (AB), a bench-stable substrate with high gravimetric hydrogen capacity, was used as a safe and practical
[EN] COBALT COMPLEXES, PROCESS FOR PREPARATION AND USE THEREOF<br/>[FR] COMPLEXES DE COBALT, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION
申请人:COUNCIL SCIENT IND RES
公开号:WO2018225087A1
公开(公告)日:2018-12-13
The present invention discloses a cobalt compound of formula (I), a process for the preparation and use thereof. The present invention further relates to a pharmaceutical composition and a method inhibition of Tau Aggregation in a subject in need thereof using compound of formula (I).
The invention provides analgesic conjugates having a mu opioid receptor agonist linked to a mGluR5 antagonist, and to methods for producing analgesia using such compounds.
A novel compound [Fe(PZDA)(H2O)2]·2H2O}n has been synthesized and its structure determined by X-ray diffraction analysis, which consists of a quasi-ladder-like double chain running along a axis where Fe(II) ions are linked through the carboxylic groups acting as the edges of the ladder and pyrazine rings functioning as the rungs. Variable-temperature magnetic susceptibility study indicates the presence of spin frustration in the double chain compound.
合成了一种新化合物 [Fe(PZDA)(H2O)2]·2 }n,并通过 X 射线衍射分析确定了其结构。该化合物由沿 a 轴的准梯形双链构成,其中 Fe(II) 离子通过羧基相连,羧基作为梯子的边缘,而吡嗪环则作为梯子的横档。变温磁 susceptibili 研究表明,该双链化合物存在自旋挫折现象。