金属催化的 C-N 交叉偶联通常通过带有共价 C 和 N 配体的金属配合物的还原消除来形成 C-N 键。我们已经确定了一种 Cu 介导的 C-N 交叉偶联,该偶联在成键事件中使用了配位 N 配体,与传统方法相反,它会生成反应性阳离子产物。机理研究表明,该过程是通过芳基有机硼向带有中性 N 配体(例如腈或 N 杂环)的Cu II络合物的金属转移来进行的。随后生成的假定的 Cu III络合物使氧化 C-N 偶联发生,从而产生硝中间体和吡啶产物。该反应对于一系列 N(sp) 和 N(sp 2 ) 前体是通用的,可应用于药物合成和后期 N-芳基化,并且从机制上证明了该方法的局限性。
Cobalt-catalysed C–H methylation for late-stage drug diversification
作者:Stig D. Friis、Magnus J. Johansson、Lutz Ackermann
DOI:10.1038/s41557-020-0475-7
日期:2020.6
despite its significance, accessing such analogues via derivatization at a late stage remains a pivotal challenge. In an effort to mitigate this major limitation, we here present a strategy for the cobalt-catalysed late-stage C–H methylation of structurally complex drug molecules. Enabling broad applicability, the transformation relies on a boron-based methyl source and takes advantage of inherently present
[EN] PRODRUG COMPOSITIONS AND METHODS OF TREATMENT<br/>[FR] COMPOSITIONS DE PROMÉDICAMENT ET PROCÉDÉS DE TRAITEMENT
申请人:AQUESTIVE THERAPEUTICS INC
公开号:WO2021087359A1
公开(公告)日:2021-05-06
Pharmaceutical compositions include a prodrug of epinephrine are described.
药物组合物包括表述的肾上腺素前药。
Multi-functional ionic liquid compositions for overcoming polymorphism and imparting improved properties for active pharmaceutical, biological, nutritional, and energetic ingredients
申请人:Rogers D. Robin
公开号:US20070093462A1
公开(公告)日:2007-04-26
Disclosed are ionic liquids and methods of preparing ionic liquid compositions of active pharmaceutical, biological, nutritional, and energetic ingredients. Also disclosed are methods of using the compositions described herein to overcome polymorphism, overcome solubility and delivery problems, to control release rates, add functionality, enhance efficacy (synergy), and improve ease of use and manufacture.
[EN] DUAL FUNCTIONING IONIC LIQUIDS AND SALTS THEREOF<br/>[FR] LIQUIDES IONIQUES À DOUBLE FONCTION ET SELS DE CEUX-CI
申请人:UNIV ALABAMA
公开号:WO2010078300A1
公开(公告)日:2010-07-08
Disclosed herein are ionic liquid compositions comprising active pharmaceutical, biological, and nutritional compounds, and methods of use. Further disclosed are compositions of matter including liquid ion pairs alone or in solution and their use; compositions of ionic liquids that are 'solvated,' for example, 'hydrated' and their uses.