Cu(I)-mediated lactone formation in subcritical water: a benign synthesis of benzopyranones and urolithins A–C
摘要:
Benzopyranones were successfully synthesized using Cu(I)-mediated C-O bond formation in subcritical water. A number of benzopyranone derivatives including polymethoxy benzopyranones, benzopyranopyridones, cbromenoindolones, and furochromenones were synthesized in satisfactory yield. This methodology was further applied to synthesize the intestinal microbial metabolites, urolithins A, B, and C, which were found to exhibit potent antioxidant activity. (C) 2013 Elsevier Ltd. All rights reserved.
An efficient and robust methodology based on electrochemical techniques for the direct synthesis of aromatic lactones through dehydrogenative C−O cyclization is described. This new and useful electrochemical reaction can tolerate a variety of functional groups, and is scalable to 100 g under mild conditions. Remarkably, heterocycle‐containing substrates can be employed, thus expanding the scope of
Novel and Efficient One-Step Parallel Synthesis of Dibenzopyranones via Suzuki−Miyaura Cross Coupling
作者:Kodumuru Vishnumurthy、Alexandros Makriyannis
DOI:10.1021/cc100068a
日期:2010.9.13
Microwave-promoted novel and efficient one-step parallel synthesis of dibenzopyranones and heterocyclic analogues from bromo arylcarboxylates and o-hydroxyarylboronic acids viaSuzuki−Miyauracrosscoupling reaction is described. Spontaneous lactonization gave dibenzopyranones and heterocyclic analogues bearing electron-donating and -withdrawing groups on both aromatic rings in good to excellent yields
Efficient Synthesis of Pyrido[3,2-c]coumarins via Silver Nitrate Catalyzed Cycloisomerization and Application to the First Synthesis of Polyneomarline C
作者:Jeong A Yoon、Young Taek Han
DOI:10.1055/s-0037-1610730
日期:2019.12
Herein, we report an efficient method for the synthesis of the pyrido[3,2-c]coumarin scaffold, one of the privileged heterocycle-fused coumarin scaffolds, via a AgNO3-catalyzed cycloisomerization of 4-(propynylamino)coumarins obtained from diverse 4-hydroxycoumarins. This concise method affords pyrido[3,2-c]coumarin analogues bearing diverse substituents on the benzene or pyridine ring in moderate
在本文中,我们报告了一种通过AgNO 3催化的4-(丙炔基氨基)香豆素的环异构化合成吡啶并[3,2- c ]香豆素骨架的一种有效方法,该吡啶并[3,2- c ]香豆素骨架是一种特权杂环融合的香豆素骨架。4-羟基香豆素。这种简洁的方法以中等到良好的产率提供了在苯或吡啶环上带有各种取代基的吡啶并[3,2- c ]香豆素类似物。此外,该方法还扩展到了三步分离法的简便合成,该方法是从中草药Polyalthia nemoralis A. DC。分离出的天然吡啶并[3,2- c ]香豆素衍生物。已知的4-羟基香豆素。
[EN] INHIBITORS OF D-AMINO ACID OXIDASE<br/>[FR] INHIBITEURS D'ACIDE AMINÉ D OXYDASE
申请人:UNIV JOHNS HOPKINS
公开号:WO2014025993A1
公开(公告)日:2014-02-13
D-amino acid oxidase (DAAO) inhibitors and methods of their use, either alone or in combination with D-serine or D-alanine, to facilitate allosteric activation of NMDA receptor-mediated neurotransmission and methods of their use as therapeutic agents for treating a subject afflicted with one or more cognitive-disorders, such as schizophrenia, including subjects suffering from negative symptoms and cognitive impairments, post-traumatic stress disorder (PTSD), or pain, are disclosed.
D-amino acid oxidase (DAAO) inhibitors and methods of their use, either alone or in combination with D-serine or D-alanine, to facilitate allosteric activation of NMDA receptor-mediated neurotransmission and methods of their use as therapeutic agents for treating a subject afflicted with one or more cognitive-disorders, such as schizophrenia, including subjects suffering from negative symptoms and cognitive impairments, post-traumatic stress disorder (PTSD), or pain, are disclosed.