A General Strategy for Site-Selective Incorporation of Deuterium and Tritium into Pyridines, Diazines, and Pharmaceuticals
作者:J. Luke Koniarczyk、David Hesk、Alix Overgard、Ian W. Davies、Andrew McNally
DOI:10.1021/jacs.7b11710
日期:2018.2.14
molecules are valuable for medicinal chemistry. The prevalence of pyridines and diazines in pharmaceuticals means that new ways to label these heterocycles will present opportunities in drug design and facilitate absorption, distribution, metabolism, and excretion (ADME) studies. A broadly applicable protocol is presented wherein pyridines, diazines, and pharmaceuticals are converted into heterocyclic phosphonium
Enantioselective Iridium-Catalyzed Allylic Substitution with 2-Methylpyridines
作者:Xi-Jia Liu、Shu-Li You
DOI:10.1002/anie.201700433
日期:2017.3.27
An enantioselective iridium‐catalyzed allylicsubstitution with a set of highly unstabilized nucleophiles generated in situ from 2‐methylpyridines is described. Enantioenriched 2‐substituted pyridines, which are frequently encountered in natural products and pharmaceuticals, could be easily constructed by this simple method in good yields and excellent enantioselectivity. The synthetic utility of the
描述了用2-甲基吡啶原位生成的一组高度不稳定的亲核试剂进行对映选择性铱催化的烯丙基取代。天然产物和药物中经常遇到的富含对映体的2-取代的吡啶可以通过这种简单方法以高收率和出色的对映选择性轻松地构建。吡啶产物的合成用途通过已报道的Na + / H +交换抑制剂的关键中间体的合成和(-)-番茄红素A的总合成得以证明。
[EN] PIPERAZINE METABOTROPIC GLUTAMATE RECEPTOR 5 (MGLUR5) NEGATIVE ALLOSTERIC MODULATORS FOR ANXIETY/DEPRESSION<br/>[FR] PIPÉRAZINE UTILISÉE EN TANT QUE MODULATEURS ALLOSTÉRIQUES NÉGATIFS AGISSANT SUR LE RÉCEPTEUR MÉTABOTROPIQUE DU GLUTAMATE DE TYPE 5 (MGLUR5)
申请人:WYETH CORP
公开号:WO2009143404A1
公开(公告)日:2009-11-26
The present teachings relate to piperazine metabotropic glutamate receptor 5 (mGluR5) negative allosteric modulators having Formula (I); wherein the constituent variables are as defined herein. The present teachings further relate to methods for the preparation of the compounds, and to methods for using the compounds for treatment of diseases and disorders including schizophrenia, paranoia, depression, manic-depressive illness and anxiety.
Ligand- and copper-free Sonogashira and Heck couplings of (Het)aryl chlorides and bromides catalyzed by palladium nanoparticles supported on in situ generated Al(OH)<sub>3</sub>
ligand- and copper-free Sonogashirareaction of (Het)aryl halides (Br and Cl) with various terminal alkynes and the Heck coupling of (Het)aryl halides (Br and Cl) with a series of olefins, catalyzed by palladiumnanoparticles supported on newly generated Al(OH)3, were developed. The catalyst can be readily recovered and reused 6 times without significant loss of activity and palladium leaching.
decarboxylative sp-sp2 coupling of alkynylcarboxylic acids with various aryl halides was carried in the presence of low-cost and readily available copper(I) iodide/iron(III) acetylacetonate under ligand-free and palladium-free conditions using lowcatalystloadings. This protocol makes such coupling reactions more practical and useful.