para-Selective C–H bond functionalization of iodobenzenes
作者:Ying Zhao、Haiming Yan、Hanwei Lu、Zhiliang Huang、Aiwen Lei
DOI:10.1039/c6cc05832a
日期:——
An oxidation-induced strategy forpara-C–H functionalization of iodobenzenes was demonstrated, which provides a general idea for the development of new, highly selectivepara-C–H functionalization reactions.
Modular bismacycles for the selective C–H arylation of phenols and naphthols
作者:Mark Jurrat、Lorenzo Maggi、William Lewis、Liam T. Ball
DOI:10.1038/s41557-020-0425-4
日期:2020.3
expedient and general strategy for the ortho-arylation of phenols and naphthols using readily available boronic acids. Our methodology relies on in situgeneration of a uniquely reactive Bi(V) arylating agent from a bench-stable Bi(III) precursor via telescoped B-to-Bi transmetallation and oxidation. By exploiting reactivity that is orthogonal to conventional metal-catalysed manifolds, diverse aryl and heteroaryl
鉴于 2-羟基联芳基化合物在有机化学、药物化学和材料化学中的重要作用,合成这种常见基序的简明方法非常有价值。在寻求扩展合成化学家在这方面的词典时,我们开发了一种使用现成的硼酸对苯酚和萘酚进行邻位芳基化的权宜之计和通用策略。我们的方法依赖于通过伸缩的 B 到 Bi 转金属和氧化从工作台稳定的 Bi(III) 前体原位生成独特的反应性 Bi(V) 芳基化剂。通过利用与传统金属催化歧管正交的反应性,多种芳基和杂芳基伙伴可以在温和条件下与苯酚和萘酚快速偶联。芳基化后,Bi(III)前体的高产率回收允许其在后续反应中有效地重复使用。对该方法的每个关键步骤的机械询问为其实际应用提供了信息,并提供了对有机铋化合物未充分利用的反应性的基本见解。
Quinoline compounds and compositions thereof
申请人:E. R. Squibb & Sons, Inc.
公开号:US04814454A1
公开(公告)日:1989-03-21
p-Aminophenols are provided having the structure ##STR1## wherein m is 0 to 5; X is CH or N; R.sup.1 and R.sup.2 may be the same or different and are H, lower alkyl, aryl, hydroxy, hydroxyalkyleneoxy, alkylthio, alkoxy, alkanoyloxy, aryloxy, halo, carboxy, alkoxycarbonyl or amido; R.sup.3 is H, lower alkyl, alkanoyl or aroyl; and R.sup.4 is H, lower alkyl or alkanoyl, and including acid-addition salts thereof, with the proviso that when X is CH, m is 0 and R.sup.1 is H, and when R.sup.4 is H, R.sup.2 is other than alkoxy, H or hydroxy, and when R.sup.4 is benzoyl, R.sup.2 is other than H. These compounds together with the compounds defined in the above proviso are useful as inhibitors of leukotriene production and as such are useful as antiallergy, anti-inflammatory and anti-psoriatic agents.
Method of inhibiting leukotriene biosynthesis by oral administration of
申请人:E. R. Squibb & Sons, Inc.
公开号:US04910208A1
公开(公告)日:1990-03-20
A method is provided for inhibiting leukotriene biosynthesis and thus treating asthma, psoriasis or inflammation by oral administration of p-aminophenols having the structure ##STR1## wherein m is 0 to 5; X is CH or N; R.sup.1 and R.sup.2 may be the same or different and are H, lower alkyl, aryl, hydroxy, hydroxyalkyleneoxy, alkylthio, alkoxy, alkanoyloxy, aryloxy, halo, carboxy, alkoxycarbonyl or amido; R.sup.3 is H, lower alkyl, alkanoyl or aroyl; and R.sup.4 is H, lower alkyl, benzoyl or alkanoyl, and including acid-addition salts thereof, with the proviso that when R.sup.4 is benzoyl, R.sup.2 is other than H.
differentiation of protein aggregates post-mortem would be advantageous for the insight into the properties of tau protein aggregates. We chose to design new molecularprobes based on the structure of 2-(1-(6-((2-[18F]fluoroethyl)(methyl)amino)-2-naphthyl)ethylidene)malononitrile to investigate their likelihood of fitting into VQIVYK tau protein binding channel model. In a modular approach, using cross-coupling