PIFA-promoted intramolecular oxidative C(aryl)-H amidation reaction: Synthesis of quinolino[3,4- b ]quinoxalin-6(5 H )-ones
作者:Chunfang Hu、Zhiguo Zhang、Wenjing Gao、Guisheng Zhang、Tongxin Liu、Qingfeng Liu
DOI:10.1016/j.tet.2017.12.016
日期:2018.2
direct intramolecular oxidative C(aryl)-H amidation reaction was developed for the synthesis of quinolino[3,4-b]quinoxalin-6(5H)-ones in moderate to excellent yields starting from readily available materials by tethering the adjacent N-methoxyamide and aryl portions in the presence of phenyliodine(III) bis(trifluoroacetate) at room temperature. This metal-free approach is a valuable addition to the traditional
从易得的材料上通过束缚分子间的连接,开发了一种简便且直接的分子内氧化C(芳基)-H酰胺化反应用于合成中等到极好产率的喹啉代[3,4- b ] quinoxalin-6(5 H)-酮。在室温下,在苯基碘(III)双(三氟乙酸酯)存在下,使相邻的N-甲氧基酰胺和芳基部分相邻。这种无金属方法是对这些分子制备中已经可用的传统方法的宝贵补充。
[EN] TOPOISOMERASE INHIBITORS<br/>[FR] INHIBITEURS DE LA TOPOISOMERASE
申请人:LATROBE UNIVERSITY
公开号:WO1998045272A1
公开(公告)日:1998-10-15
(EN) The invention provides a novel series of tetracyclic quinoline and quinoxaline carboxamides, $i(bis) compounds in which two of the tetracyclic compounds are joined by a linker, and pharmaceutically-acceptable salts and N-oxides thereof, which have the ability to inhibit topoisomerase activity. The compounds are active $i(in vitro) and $i(in vivo) against tumour cells. Methods of synthesis and pharmaceutical compositions are also claimed.(FR) L'invention concerne une nouvelle série de carboxamides tétracycliques de la quinoline et de la quinoxaline, des composés $i(bis) dans lesquels deux des composés tétracycliques sont reliés par un élément de liaison, ainsi que leurs sels et leurs N-oxydes pharmaceutiquement acceptables, qui sont capables d'inhiber l'activité de la topoisomérase. Ces composés sont actifs $i(in vitro) et $i(in vivo) contre les cellules tumorales. L'invention concerne également des méthodes de synthèse et des compositions pharmaceutiques.
Wahl, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1907, vol. 144, p. 212
作者:Wahl
DOI:——
日期:——
Wahl, Bulletin de la Societe Chimique de France, 1907, vol. <4> 1, p. 466
作者:Wahl
DOI:——
日期:——
Isobutyl Nitrite-Mediated Synthesis of Quinoxalines through Double C−H Bond Amination of <i>N</i>
-Aryl Enamines
作者:Yan-Xiao Jiao、Lin-Su Wei、Chun-Yang Zhao、Kai Wei、Dong-Liang Mo、Cheng-Xue Pan、Gui-Fa Su
DOI:10.1002/adsc.201800928
日期:2018.11.16
An efficient and metal‐free double C−H bond amination of N‐aryl enamines using isobutyl nitrite (IBN) has been developed. This method enables the preparation of functionalized quinoxalines in good to excellent yields and tolerates a variety of N‐aryl enamines with diverse functional substituents. Mechanistic studies revealed the presence of a key β‐imino oxime ester intermediate. A quinoxaline derivative