Iodine mediated oxidative cross coupling of 2-aminopyridine and aromatic terminal alkyne: a practical route to imidazo[1,2-<i>a</i>]pyridine derivatives
作者:Surya Kanta Samanta、Mrinal K. Bera
DOI:10.1039/c9ob00812h
日期:——
A novel, transition-metal free route leading to imidazo[1,2-a]pyridine derivatives via iodine mediated oxidative coupling between 2-aminopyridine and aromatic terminal alkyne has been demonstrated. This newly developed method discloses an operationally simple way for the construction of imidazoheterocycles. Commercially available antiulcer drug zolimidine may readily be synthesized employing this method
Gold-Catalyzed Redox Synthesis of Imidazo[1,2-<i>a</i>]pyridines using Pyridine<i>N</i>-Oxide and Alkynes
作者:Eric P. A. Talbot、Melodie Richardson、Jeffrey M. McKenna、F. Dean Toste
DOI:10.1002/adsc.201300996
日期:2014.3.10
synthesis of imidazo[1,2‐a]pyridines has been developed: catalytic dichloro(2‐pyridinecarboxylato)gold [PicAuCl2] in the presence of an acid produces a range of imidazo[1,2‐a]pyridines in good yields starting from alkynes and 2‐aminopyridine N‐oxides. This strategy is mild and foreseen to be of particular use for the installation of stereogenic centers adjacent to the imidazo[1,2‐a]pyridine ring without
已经开发出一种温和、催化、原子经济的咪唑并[1,2- a ]吡啶合成方法:催化二氯(2-吡啶羧基)金[PicAuCl 2 ]在酸存在下产生一系列咪唑并[1,2- a ]吡啶以炔烃和 2-氨基吡啶N-氧化物为起始原料,收率良好。这种策略是温和的,预计特别适用于在咪唑并[1,2- a ]吡啶环附近安装立体中心,而不损失对映体过量。
Potential inhibitors of plasmodial heme oxygenase; an innovative approach for combating chloroquine resistant malaria
Syntheses of imidazo-pyridines and substituted prolines and their effect on heme oxygenase activity of Plasmodium yoelii and corresponding infected host have been studied. Six compounds in vitro and one in vivo showed selective inhibition of parasite enzyme which may be further exploited in the development of resistant reversal agents. (C) 1998 Elsevier Science Ltd. All rights reserved.