Positive and Negative Modulation of Group I Metabotropic Glutamate Receptors
摘要:
A discriminating pharmacophore model for noncompetitive metabotropic glutamate receptor antagonists of subtype 1 (mGluR1) was developed that facilitated the discovery of moderately active mGluR1 antagonists. One scaffold was selected for the design of several focused libraries where different substitution patterns were introduced. This approach facilitated the discovery of potent mGluR1 antagonists, as well as positive and negative mGluR5 modulators, because both receptor subtypes share similar binding pockets. For mGluR1 antagonists, a homology model of the mGlu1 receptor was established and a putative binding mode within the receptor's transmembrane domain was visualized.
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
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]·2H2O}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。
NISHIWAKI, NAGATOSHI;MINAKATA, SATOSHI;KOMATSU, MITSUO;OHSHIRO, YOSHIKI, CHEM. LETT.,(1989) N, C. 773-776
Positive and Negative Modulation of Group I Metabotropic Glutamate Receptors
作者:Maksims Vanejevs、Claudia Jatzke、Steffen Renner、Sibylle Müller、Mirko Hechenberger、Tanja Bauer、Anna Klochkova、Ilya Pyatkin、Denis Kazyulkin、Elena Aksenova、Sergey Shulepin、Olga Timonina、Ariane Haasis、Aleksandrs Gutcaits、Christopher G. Parsons、Valerjans Kauss、Tanja Weil
DOI:10.1021/jm0611298
日期:2008.2.1
A discriminating pharmacophore model for noncompetitive metabotropic glutamate receptor antagonists of subtype 1 (mGluR1) was developed that facilitated the discovery of moderately active mGluR1 antagonists. One scaffold was selected for the design of several focused libraries where different substitution patterns were introduced. This approach facilitated the discovery of potent mGluR1 antagonists, as well as positive and negative mGluR5 modulators, because both receptor subtypes share similar binding pockets. For mGluR1 antagonists, a homology model of the mGlu1 receptor was established and a putative binding mode within the receptor's transmembrane domain was visualized.