Selective Synthesis of Dihydrophenanthridine and Phenanthridine Derivatives from the Cascade Reactions of <i>o</i>-Arylanilines with Alkynoates through C–H/N–H/C–C Bond Cleavage
作者:Yuanshuang Xu、Caiyun Yu、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.joc.1c00256
日期:2021.4.16
unprecedented selective synthesis of dihydrophenanthridine and phenanthridinederivatives through the cascade reactions of 2-arylanilines with alkynoates is presented. Mechanistic studies showed that the formation of the dihydrophenanthridine scaffold involves an initial C(sp2)–H alkenylation of 2-arylaniline with alkynoate followed by an intramolecular aza-Michael addition. When this reaction is carried out
This invention provides a compound of formulae (I) or (II) having the structure or a pharmaceutically acceptable salt thereof which are useful for the treatment of the inflammatory component of diseases and are particularly useful in treating atherosclerosis, myocardial infarction, congestive heart failure, inflammatory bowel disease, arthritis, type II diabetes, and autoimmune diseases such as multiple sclerosis and rheumatiod arthritis.
[EN] INHIBITORS OF HEPATITIS C VIRUS<br/>[FR] INHIBITEURS DU VIRUS DE L'HÉPATITE C
申请人:GILEAD SCIENCES INC
公开号:WO2014008285A1
公开(公告)日:2014-01-09
Compounds of Formula I are disclosed, As well as pharmaceutically acceptable salts thereof. Methods of using said compounds and pharmaceutical compositions containing said compounds are also disclosed.
化合物I的结构已经披露,以及其药用盐。还披露了使用这些化合物的方法和含有这些化合物的药物组合物。
Assembly of substituted phenanthridines via a cascade palladium-catalyzed coupling reaction, deprotection and intramolecular cyclization
is presented. In the presence of Pd(PPh3)4, accessible precursors undergo a Suzuki cross-coupling reaction with 2-(Boc-amino)benzeneboronic acid pinacol ester and then spontaneously undergo deprotection and intramolecular condensation to form the corresponding phenanthridines in one step. This reaction has a wide range of substrates with various functional groups, and the corresponding products have