Lewis acid-assisted palladium-catalysed dealkoxylation of N-alkoxyamides has been realised in the absence of an external reductant.
Lewis酸辅助钯催化的N-烷氧基酰胺脱烷氧化反应在无外部还原剂的情况下实现。
A CO<sub>2</sub>-Catalyzed Transamidation Reaction
作者:Yang Yang、Jian Liu、Fadhil S. Kamounah、Gianluca Ciancaleoni、Ji-Woong Lee
DOI:10.1021/acs.joc.1c02077
日期:2021.12.3
Transamidation reactions are often mediated by reactive substrates in the presence of overstoichiometric activating reagents and/or transition metal catalysts. Here we report the use of CO2 as a traceless catalyst: in the presence of catalytic amounts of CO2, transamidation reactions were accelerated with primary, secondary, and tertiary amide donors. Various amine nucleophiles including amino acid
在过量化学计量的活化试剂和/或过渡金属催化剂的存在下,转酰胺基反应通常由反应性底物介导。在这里,我们报告了使用 CO 2作为无痕催化剂:在催化量的 CO 2存在下,使用伯、仲和叔酰胺供体加速转酰胺反应。包括氨基酸衍生物在内的各种胺类亲核试剂都被耐受,这表明转酰胺基在肽修饰和聚合物降解中的实用性(例如,Nylon-6,6)。特别是,N , O -二甲基羟基酰胺(Weinreb 酰胺)在 CO 2催化的转酰胺基反应中与 N 2相比表现出明显的反应性大气层。进行了比较 Hammett 研究和动力学分析,以阐明分子 CO 2的催化活化机制,这得到了 DFT 计算的支持。我们将CO 2在转酰胺基反应中的积极作用归因于通过与亲电子CO 2共价结合来稳定四面体中间体。
[EN] SUBSTITUTED QUINOXALINE DERIVATIVES AS INHIBITORS OF PFKFB<br/>[FR] DÉRIVÉS DE QUINOXALINE SUBSTITUÉS EN TANT QU'INHIBITEURS DE PFKFB
申请人:MERCK PATENT GMBH
公开号:WO2018087021A1
公开(公告)日:2018-05-17
The present invention relates to substituted quinoxaline derivatives. These compounds areusefulfor the prevention and/or treatment of medical conditions hyperproliferative diseases.
本发明涉及取代喹诺酮衍生物。这些化合物可用于预防或治疗超增殖性疾病。
[EN] ANTIBACTERIAL COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS ANTIBACTÉRIENS ET UTILISATIONS DE CEUX-CI
申请人:THE GLOBAL ALLIANCE FOR TB DRUG DEV INC
公开号:WO2017155909A1
公开(公告)日:2017-09-14
The present invention relates to compounds of formula (I) including any stereochemically isomeric form thereof, or pharmaceutically acceptable salts thereof, for the treatment of tuberculosis.
本发明涉及式(I)的化合物,包括其任何立体化异构体或其药学上可接受的盐,用于治疗结核病。
[EN] HETEROCYCLIC ANTI-VIRAL COMPOUNDS COMPRISING METABOLIZABLE MOIETIES AND THEIR USES<br/>[FR] COMPOSES ANTIVIRAUX HETEROCYCLIQUES COMPORTANT DES GROUPES FONCTIONNELS METABOLISABLES ET LEURS UTILISATIONS
申请人:RIGEL PHARMACEUTICALS INC
公开号:WO2005097760A1
公开(公告)日:2005-10-20
The present invention relates to substituted prodrug and compositions thereof useful for treating or preventing Hepatitis C virus (HCV) infections. In particular, the present invention relates to prodrugs of substituted diphenyl-, diheteroaryl- and mixed phenyl heteroaryl substituted five-membered heterocycle compounds, compositions comprising the compounds and the use of such compounds and compositions to inhibit HCV replication and/or proliferation as a therapeutic approach towards the treatment and/or prevention of HCV infections in humans and animals.