Synthesis and applications of 4-substituted 1-(4-iodophenyl)pyrrolidine-2,5-diones
摘要:
The synthesis of 4-substituted 1-(4-iodophenyl)pyrrolidine-2,5-dione derivatives was achieved through an addition reaction between amines and a thiol in the presence of PMDTA as a base and a copper salt. The derivatives containing a terminal acetylene moiety were converted to the corresponding 1,4-triazolyl derivatives. The 1-(4-iodophenyl)pyrrolidine-2,5-dione derivatives were functionalized through oxidation alkylation and allylation reactions. In general, the compounds were obtained in moderate-to-good yields. (C) 2015 Elsevier Ltd. All rights reserved.
Reduction of Activated Alkenes by P
<sup>III</sup>
/P
<sup>V</sup>
Redox Cycling Catalysis
作者:Lars Longwitz、Thomas Werner
DOI:10.1002/anie.201912991
日期:2020.2.10
using a phosphetane oxide catalyst in the presence of a simple organosilane as the terminal reductant and water as the hydrogen source. Quantitative hydrogenation was observed when 1.0 mol % of a methyl‐substituted phosphetane oxide was employed as the catalyst. The procedure is highly selective towards activated double bonds, tolerating a variety of functional groups that are usually prone to reduction
Synthesis and in Vitro Evaluation of N-Substituted Maleimide Derivatives as Selective Monoglyceride Lipase Inhibitors
作者:Nicolas Matuszak、Giulio G. Muccioli、Geoffray Labar、Didier M. Lambert
DOI:10.1021/jm900461w
日期:2009.12.10
action is quickly terminated via enzymatic hydrolysis catalyzed by monoglyceride lipase (MGL). Regulating its endogenous level could offer therapeutic opportunities; however, few selective MGL inhibitors have been described so far. Here, we describe the synthesis of N-substituted maleimides and their pharmacological evaluation on the recombinant human fatty acid amide hydrolase (FAAH) and on the purified
内源性大麻素2-花生四烯酸甘油酯(2-AG)在许多生理过程中起着重要作用,其作用通过甘油单酯脂肪酶(MGL)催化的酶促水解迅速终止。调节其内源水平可以提供治疗机会;然而,到目前为止,几乎没有描述选择性的MGL抑制剂。在这里,我们描述了N-取代的马来酰亚胺的合成及其对重组人脂肪酸酰胺水解酶(FAAH)和纯化人MGL的药理评价。先前已经描述了一些N-芳基马来酰亚胺(萨里奥(SM);萨洛(OM);Nevalainen,T .;Poso,A。莱蒂宁(JT);贾文恩(T. Jarvinen)Niemi,R.大鼠小脑膜中2-花生四烯酸甘油水解酶中巯基敏感位点的表征。化学 生物学 2005年,12,649-656),为MGL抑制剂,以及沿着这些线路,我们提出一组新的马来酰亚胺衍生物的那显示出低微摩尔的IC 50和朝向MGL VS FAAH高选择性。然后,研究了结构活性关系,例如,1-biphenyl-4
Antifungal, cytotoxic and SAR studies of a series of N-alkyl, N-aryl and N-alkylphenyl-1,4-pyrrolediones and related compounds
The synthesis, in vitro evaluation and SAR studies of 67 maleimides and derivatives acting as antifungal agents are reported. A detailed SAR study supported by theoretical calculations led us to determine that: an intact maleimido ring appears to be necessary for a strong antifungal activity, dissimilarly affected by the substituents in positions 2 and 3. The best activities were shown by 2,3-nonsubstituted
Methanesulfonic Acid Catalyzed Friedel–Crafts Reaction of Electron-Rich Arenes with N-Arylmaleimides: A Highly Efficient Metal-Free Route To Access 3-Arylsuccinimides
作者:Rama Krishna Peddinti、Deepti Gairola
DOI:10.1055/s-0040-1706008
日期:2021.6
Friedel–Crafts reaction is widely used for the C–C bond forming reaction to enable the direct connection of electron-rich arenes to electron-deficient olefins with high regioselectivity. Herein, a highly efficient, metal-free, and environmentally benign F–C strategy of electron-rich arenes with N-arylmaleimides has been developed for the construction of 3-arylsuccinimides in the presence of a green
作者:Chetan C. Chintawar、Amit K. Yadav、Nitin T. Patil
DOI:10.1002/anie.202002141
日期:2020.7.13
Herein, we disclose the gold‐catalyzed 1,2‐diarylation of alkenes through the interplay of ligand‐enabled AuI/AuIII catalysis with the idiosyncratic π‐activation mode of gold complexes. Unlike the classical migratory‐insertion‐based approach to 1,2‐diarylation, the present approach not only circumvents the formation of direct Ar−Ar′ coupling and Heck‐type side products but more intriguingly demonstrates
本文中,我们通过配体使能的Au I / Au III催化与金配合物的特质π活化模式的相互作用揭示了金的烯烃1,2-二芳基化反应。与经典的基于迁移插入的方法进行1,2-二芳基化不同,本方法不仅规避了直接Ar-Ar'偶联和Heck型副产物的形成,而且更有趣地证明了其反应性和选择性与先前已知的互补金属催化(Pd,Ni或Cu)。对机理进行详细研究的结果表明,由于芳基烯烃具有非清白的性质,芳基碘化物向Au I络合物的氧化加成是限速步骤。