[EN] HYDROXYETHYLAMINE DERIVATIVES FOR THE TREATMENT OF ALZHEIMER'S DISEASE<br/>[FR] DERIVES D'HYDROXYETHYLAMINE UTILISES POUR LE TRAITEMENT DE LA MALADIE D'ALZHEIMER
申请人:GLAXO GROUP LTD
公开号:WO2004050619A1
公开(公告)日:2004-06-17
The present invention relates to novel hydroxyethylamine compounds of formula (I): (I) having Asp2 (-secretase, BACE1 or Memapsin) inhibitory activity, processes for their preparation, to compositions containing them and to their use in the treatment of diseases characterised by elevated - amyloid levels or -amyloid deposits, particularly Alzheimer's disease.
Synthesis of methoxetamine, its metabolites and deuterium labelled analog as analytical standards and their HPLC and chiral capillary electrophoresis separation
deaths in Europe. The fast and user-friendly identification and quantification of methoxetamine and its metabolites is a key factor for successful treatment of intoxication. Therefore, we suggested a convenient preparation method which was used for the synthesis of methoxetamine, seven methoxetamine metabolites and a deuteriumlabelledderivative as analytical standards. Methoxetamine and normethoxetamine
甲基苯丙胺是一种设计药物,可替代解离性麻醉性氯胺酮,在欧洲已引起大量与医院相关的中毒和死亡。快速,用户友好的甲氧西明及其代谢产物的鉴定和定量是成功治疗中毒的关键因素。因此,我们提出了一种简便的制备方法,该方法可用于合成甲氧西丁胺,七种甲氧西丁胺代谢物和氘标记的衍生物作为分析标准品。甲氧西丁胺和去甲乙氧胺用作制备O-去甲基化和N的原料-脱烷基代谢产物。多步合成从可商购的化合物开始并且提供良好的产率。我们制备的分析标准品用于通过LCMS确证大鼠尿液中的甲氧西敏代谢物的建议结构。使用毛细管电泳,以各种浓度的β-环糊精,羧甲基化的β-环糊精和硫酸化的β-环糊精作为手性选择剂,用于MXE及其代谢物的手性分离。手性分离对于四种分析物是成功的。随后在最佳条件下,即当在50 mmol L -1中使用15 mmol L -1β-环糊精时,分析MXE及其代谢产物的混合物磷酸盐缓冲液,pH 2.5。在这种情况下
Synthesis of 4<i>H</i>-1,3-Benzoxazines via Metal- and Oxidizing Reagent-Free Aromatic C–H Oxygenation
作者:Fan Xu、Xiang-Yang Qian、Yan-Jie Li、Hai-Chao Xu
DOI:10.1021/acs.orglett.7b03152
日期:2017.12.1
An unprecedented electrochemical aromatic C–H oxygenation reaction for the synthesis of 4H-1,3-benzoxazines from easily available N-benzylamides is reported. These oxidative cyclization reactions proceed in a transition metal- and oxidizing reagent-free fashion and produce H2 as only theoretical byproduct. Adapting the C–H oxygenation reaction in an electrochemical microreactor has been demonstrated
据报道,从容易获得的N-苄基酰胺类化合物合成4 H -1,3-苯并恶嗪史无前例的电化学芳族CH氧化反应。这些氧化环化反应以无过渡金属和无氧化剂的方式进行,并仅作为理论副产物产生H 2。已经证明了在电化学微反应器中适应CH氧化反应。
The Barbier-Grignard-Type Arylation of Ketones and Unexpected Cross-Coupling of Phenolic Ketones using Unactivated Aryl Bromides
ketones and an unexpected cross‐coupling of phenolic ketones was observed using unactivated bromides and magnesium in tetrahydrofuran/toluene at 96 °C promoted by multicatalysts of cupric bromide (15 mol%), bismuth chloride (5 mol%) and silver bromide (10 mol%). The substituent and electroniceffects on the reaction have been discussed. High yields of arylation and cross‐coupling have been attained under
Ring-opening iodination and bromination of unstrained cycloalkanols through β-scission of alkoxy radicals
作者:Jiang-Ling Shi、Yuankai Wang、Zixuan Wang、Bowen Dou、Jianbo Wang
DOI:10.1039/d0cc01720e
日期:——
Ring-opening iodination or bromination of unstrained cycloalkanols with NaI or NaBr and PhI(OAc)2 under visible light irradiation is developed. In this protocol the concentration of I2 is modulated through the generation of triiodide (I3-), thus significantly avoiding undesired side reactions. The reaction is under mild conditions and has a wide substrate scope, thus providing a practically useful