Nickel-Catalyzed Sonogashira C(sp)–C(sp<sup>2</sup>) Coupling through Visible-Light Sensitization
作者:Da-Liang Zhu、Ruijie Xu、Qi Wu、Hai-Yan Li、Jian-Ping Lang、Hong-Xi Li
DOI:10.1021/acs.joc.0c01177
日期:2020.7.17
efficient method for visible-light-initiated, nickel-catalyzed Sonogashira C(sp)–C(sp2) coupling has been developed via an energy-transfer mode. Thioxanthen-9-one as a photosensitizer could significantly accelerate the arylation of alkynes with a wide range of (hetero)aryl halides in high yields. The cross-couplingreaction undergoes the stepwise oxidative addition of an arylhalide to nickel(0), transmetalation
[EN] PYRIDAZINONE COMPOUNDS AND THEIR USE AS DAAO INHIBITORS<br/>[FR] COMPOSÉS DE PYRIDAZINONE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE LA DAAO
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2013027000A1
公开(公告)日:2013-02-28
The present invention provides compounds of formula (I) and pharmaceutically acceptable salts thereof, wherein R1 and R2 are as defined in the specification, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
[EN] 6,7-DIHYDROPYRAZOLO[1,5-A]PYRAZIN-4(5H)-ONE COMPOUNDS AND THEIR USE AS NEGATIVE ALLOSTERIC MODULATORS OF MGLUR2 RECEPTORS<br/>[FR] COMPOSÉS 6,7-DIHYDROPYRAZOLO[1,5-A] PYRAZIN-4(5H)-ONE ET LEUR UTILISATION COMME MODULATEURS ALLOSTÉRIQUES NÉGATIFS DES RÉCEPTEURS MGLUR2
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2016016395A1
公开(公告)日:2016-02-04
The present invention relates to novel 6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one derivatives as negative allosteric modulators (NAMs) of the metabotropic glutamate receptor subtype 2 ("mGluR2"). The invention is also directed to pharmaceutical compositions comprising such compounds, to processes for preparing such compounds and compositions, and to the use of such compounds and compositions for the prevention or treatment of disorders in which the mGluR2 subtype of metabotropic receptors is involved.
A 2-pyridone compound represented by the formula [1]:
wherein in the formula [1],
the ring represented by A represents a benzene ring or a pyridine ring,
X represents any of the structures represented by the formulas [3] shown below:
V represents a single bond or a lower alkylene group, and
W represents a single bond, an ether bond or a lower alkylene group (wherein the lower alkylene group may contain an ether bond)},
a tautomer or stereoisomer of the compound, a pharmaceutically acceptable salt thereof, or a solvate thereof is a compound that has an excellent GK activating effect and is useful as a pharmaceutical.
[EN] 6,7-DIHYDROPYRAZOLO[1,5-α]PYRAZIN-4(5H)-ONE COMPOUNDS AND THEIR USE AS NEGATIVE ALLOSTERIC MODULATORS OF MGLUR2 RECEPTORS<br/>[FR] COMPOSÉS DE 6,7-DIHYDROPYRAZOLO[1,5-Α]PYRAZIN-4(5H)-ONE ET LEUR UTILISATION COMME MODULATEURS ALLOSTÉRIQUES NÉGATIFS DES RÉCEPTEURS MGLUR2
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2016087487A1
公开(公告)日:2016-06-09
The present invention relates to novel 6,7-dihydropyrazolo[1,5-α]pyrazin-4(5H)-one derivatives as negative allosteric modulators (NAMs) of the metabotropic glutamate receptor subtype 2 ("mGluR2"). The invention is also directed to pharmaceutical compositions comprising such compounds, to processes for preparing such compounds and compositions, and to the use of such compounds and compositions for the prevention or treatment of disorders in which the mGluR2 subtype of metabotropic receptors is involved.