Discovery and Structure–Activity Relationships of Pyrrolone Antimalarials
摘要:
In the pursuit of new antimalarial leads, a phenotypic screening of various commercially sourced compound libraries was undertaken by the World Health Organisation Programme for Research and Training in Tropical Diseases (WHO-TDR). We report here the detailed characterization of one of the hits from this process, TDR32750 (8a), which showed potent activity against Plasmodium falciparum K1 (EC50 similar to 9 nM), good selectivity (>2000-fold) compared to a mammalian cell line (L6), and significant activity against a rodent model of malaria when administered intraperitoneally. Structure-activity relationship studies have indicated ways in which the molecule could be optimized. This compound represents an exciting start point for a drug discovery program for the development of a novel antimalarial.
One-pot synthesis of cyclohexylamine and <i>N</i>-aryl pyrroles <i>via</i> hydrogenation of nitroarenes over the Pd<sub>0.5</sub>Ru<sub>0.5</sub>-PVP catalyst
The direct synthesis of cyclohexylamine via the hydrogenation of nitrobenzene over monometallic (Pd, Ru or Rh) and bimetallic (PdxRu1−x) catalysts was studied. The Pd0.5Ru0.5-PVP catalyst was the most effective catalyst for this reaction. The catalyst can be reused and applied for the synthesis of N-aryl pyrroles and quinoxalines from nitrobenzenes.
研究了在单金属(Pd,Ru或Rh)和双金属(Pd x Ru 1- x)催化剂上通过硝基苯加氢直接合成环己胺的方法。Pd 0.5 Ru 0.5 -PVP催化剂是该反应最有效的催化剂。该催化剂可以重复使用并用于由硝基苯合成N-芳基吡咯和喹喔啉。
[EN] ANDROGEN RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DU RÉCEPTEUR DES ANDROGÈNES
申请人:ALPINE ANDROSCIENCES INC
公开号:WO2019152731A1
公开(公告)日:2019-08-08
Compounds that inhibit the androgen receptor, pharmaceutical compositions comprising one or more of the compounds, as well as methods of treating cancer using such compounds are described.
Paal–Knorr Pyrrole Synthesis Using Recyclable Amberlite IR 120 Acidic Resin: A Green Approach
作者:Aarti Devi、Shallu、M. L. Sharma、Jasvinder Singh
DOI:10.1080/00397911.2010.540766
日期:2012.5.15
Abstract Amberlite IR 120 acidic resin, a polymer matrix, has been demonstrated as a catalyst for Paal-Knorrcondensation of 2,5-hexadione with primary amines under solvent-free conditions. This is an efficient, mild, and green methodology for N-substitutedpyrrole derivatives. GRAPHICAL ABSTRACT
摘要 Amberlite IR 120 酸性树脂是一种聚合物基质,已被证明可作为 2,5-己二酮与伯胺在无溶剂条件下进行 Paal-Knorr 缩合的催化剂。这是一种用于 N 取代吡咯衍生物的高效、温和且绿色的方法。图形概要
Direct Synthesis of Pyrroles via Heterogeneous Catalytic Condensation of Anilines with Bioderived Furans
作者:Lei Tao、Zi-Jian Wang、Tian-Hao Yan、Yong-Mei Liu、He-Yong He、Yong Cao
DOI:10.1021/acscatal.6b02953
日期:2017.2.3
Given the wide applications of pyrroles in agriculture, pharmaceuticals, and supramolecular and materials chemistry, a mild and eco-friendly route to produce functionalized pyrrolesfrom bioderived feedstocks is highly desirable. Described herein is a mild and convenient synthesis of pyrroles via direct condensation of an equimolar amount of structurally diverse anilines with biobased furans catalyzed
A bifunctional 3d‐metal catalyst for the cascade synthesis of diverse pyrroles from nitroarenes is presented. The optimal catalytic system Co/NGr‐C@SiO2‐L is obtained by pyrolysis of a cobalt‐impregnated composite followed by subsequent selective leaching. In the presence of this material, (transfer) hydrogenation of easily available nitroarenes and subsequent Paal–Knorr/Clauson‐Kass condensation provides