[EN] 2-AMINOPYRIMIDINE DERIVATIVES AS ADENOSINE A1 AND A2A RECEPTOR ANTAGONISTS [FR] DERIVES DE 2-AMINOPYRIMIDINE UTILISES EN TANT QU'ANTAGONISTES DES RECEPTEURS A2A ET A1 DE L'ADENOSINE
Scope and limitations of the synthesis of functionalized quinolizidinones and related compounds by a simple precursor approach via addition of lithium allylmagnesates to 2-pyridones and RCM as key steps
作者:Jacek G. Sośnicki、Łukasz Struk、Tomasz Idzik、Gabriela Maciejewska
DOI:10.1016/j.tet.2014.09.043
日期:2014.11
The scope and limitations of the simple synthesis of functionalized quinolizidin-4-ones by chemoselective N-alkenylation of NH pyridin-2(1H)-ones (2-pyridones), regioselective addition of lithium allyl(di-n-butyl)magnesates(1-) to N-alkenylpyridin-2(1H)-ones, followed by ring closing metathesis (RCM) is described. A number of functionalizations introduced into quinolizidin-4-one rings demonstrated
通过N H吡啶2(1 H)-酮(2-吡啶酮)的化学选择性N-烯基化,区域选择性加成烯丙基锂(二-正丁基)的化学合成N吡啶基简单地合成官能化的喹啉并丁4-酮的范围和局限性将镁酸盐(1-)转变为N-烯基吡啶-2(1 H)-,然后进行闭环复分解(RCM)。引入喹喔啉-4-酮环的许多功能化表明了支架合成中提出的策略的高前景。还介绍了它们扩展到吡啶并[1,2 - a ]氮杂环庚烷-4-酮和吡啶并[1,2 - a ]偶氮星-4-酮衍生物的合成以及螺环稠合化合物的合成。
POSITIVE ALLOSTERIC MODULATORS (PAM)
申请人:Green Luke
公开号:US20110098313A1
公开(公告)日:2011-04-28
The present invention relates to phenylethynyl compounds of formula I
wherein
R
1
, R
2
, X, L, R
3
, R
4
, R
4′
, cyc, and n are as defined in the specification and claims and to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5). They are useful for the treatment of schizophrenia or cognitive diseases.
The efficient palladium-catalyzed alkynylation of electron-rich bromoheteroarenes, incorporating deactivating electron-donating methyl and methoxy groups, and the (hetero)arylation of diynes, take place in the imidazolium ionic liquid [BMIM][BF4], as a highly polar non-volatile solvent. This method may constitute a sustainable alternative to classical solvents such as dioxane, DMF, NMP, or DMAc. New enynes are formed in the presence of a system encompassing a copper-free palladium catalyst, triphenylphosphine as ligand, and various inexpensive bases. The enyne molecules reported are selectively synthesized in high yields and are mostly unprecedented.