Fused heterocyclic amido compounds as anti-hepatitis C virus agents
摘要:
We identified a fused heteroaromatic amido structure based on the phenanthridine skeleton as a superior scaffold for candidate drugs with potent anti-HCV activity. Among the compounds synthesized, a phenanthridine analogue with a 1,3-dioxolyl group (24) possessed the most potent anti-HCV activity (EC50 value: 50 nM), with acceptable cytotoxicity. The structural development and structure-activity relationships of these compounds are described. (C) 2011 Elsevier Ltd. All rights reserved.
An efficient and versatile ‘green’ catalytic system for the Buchwald–Hartwig cross-coupling reaction in water is reported. In an aqueous micellar medium, the combination of t-BuXPhos with [(cinnamyl)PdCl]2 showed excellent performance for coupling arylbromides or chlorides with a large set of amines, amides, ureas and carbamates. The method is functional-group tolerant, proceeds smoothly (30 to 50
One-Pot Reductive Mono-<i>N</i>-alkylation of Aniline and Nitroarene Derivatives Using Aldehydes
作者:Eunyoung Byun、Bomi Hong、Kathlia A. De Castro、Minkyung Lim、Hakjune Rhee
DOI:10.1021/jo701503q
日期:2007.12.1
One-potreductivemono-N-alkylation of aniline and nitroarene derivatives using various aldehydes by Pd/C catalyst in aqueous 2-propanol solvent with ammonium formate as in situ hydrogen donor is illustrated. The reaction proceeded smoothly and selectively with excellent yield at room temperature. Our protocol presents a facile, economical, and environmentally benign alternative for reductive amination
Efficient nickel-catalysed<i>N</i>-alkylation of amines with alcohols
作者:Anastasiia Afanasenko、Saravanakumar Elangovan、Marc C. A. Stuart、Giuseppe Bonura、Francesco Frusteri、Katalin Barta
DOI:10.1039/c8cy01200h
日期:——
selective N-alkylation of amines with alcohols, that is in situ generated from Ni(COD)2 and KOH under ligand-free conditions. This novel method is very efficient for the functionalization of aniline and derivatives with a wide range of aromatic and aliphatic alcohols as well as diols and exhibits excellent functionalgroup tolerance including halides, benzodioxane and heteroaromatic groups. Several TEM measurements
Reductive Monoalkylation of Aromatic and Aliphatic Nitro Compounds and the Corresponding Amines with Nitriles
作者:Ruel Nacario、Shailaja Kotakonda、David M. D. Fouchard、L. M. Viranga Tillekeratne、Richard A. Hudson
DOI:10.1021/ol047580f
日期:2005.2.1
[reaction: see text] A simple, selective, rapid, and efficient procedure for the synthesis of secondary amines from the reductive alkylation of either aliphatic or aromatic nitro compounds and the corresponding amines is reported. Ammoniumformate is used as the hydrogen source and Pd/C as the hydrogen transfer catalyst. The reaction is carried out at room temperature. The rate differences for the preferential
The cannabinoid type 2receptors (CB2Rs) play crucial roles in inflammatory diseases. There has been considerable interest in developing potent and selectiveligands for CB2R. In this study, quinoline-2,4(1H,3H)-dione analogs have been designed, synthesized, and evaluated for their potencies and binding properties toward the cannabinoid type 1 receptor (CB1R) and CB2R. C5- or C8-substituted quinoline-2