Synthesis of 4-Quinolones through Nickel-Catalyzed Intramolecular Amination on the β-Carbon of o-(N-Alkylamino)propiophenones
摘要:
o-(N-Alkylamino)propiophenones are converted into 4-quinolones in the presence of chlorobenzene, potassium phosphate, morpholine, and nickel(0) catalyst. The reaction proceeds through the nickel-catalyzed formation of beta-enaminones from o-(N-alkylamino)propiophenones and morpholine, followed by the intramolecular transamination.
Direct conjugate alkylation of α,β-unsaturated carbonyls by Ti<sup>III</sup>-catalysed reductive umpolung of simple activated alkenes
作者:Plamen Bichovski、Thomas M. Haas、Manfred Keller、Jan Streuff
DOI:10.1039/c5ob02631h
日期:——
The titanium(III)-catalysed cross-selective reductive umpolung of Michael-acceptors represents a unique direct conjugate β-alkylation reaction. It allows the cross-selective preparation of 1,6- and 1,4-difunctionalised building blocks without the requirement of stoichiometric organometallic reagents. In this full paper, the development and scope of the titanium(III)-catalysed cross-selective reductive
Direct C-3-Alkenylation of Quinolones via Palladium-Catalyzed CH Functionalization
作者:Mingzong Li、Liangxi Li、Haibo Ge
DOI:10.1002/adsc.201000364
日期:2010.10.4
An unprecedented C-3-alkenylation of quinolones was reported through palladium-catalyzed CH functionalization with 1% catalyst loading. This method provides an efficient route to a variety of new quinolone derivatives.
[EN] METHODS AND COMPOUNDS FOR RESTORING MUTANT P53 FUNCTION<br/>[FR] MÉTHODES ET COMPOSÉS POUR LA RESTAURATION D'UNE FONCTION DE MUTANTS DE P53
申请人:PMV PHARMACEUTICALS INC
公开号:WO2021262596A1
公开(公告)日:2021-12-30
Mutations in oncogenes and tumor suppressors contribute to the development and progression of cancer. The present disclosure describes compounds and methods that restore DNA binding affinity of p53 mutants. The compounds of the present disclosure can bind to mutant p53 and restore the ability of the p53 mutant to bind DNA and activate downstream effectors involved in tumor suppression. The disclosed compounds can be used to reduce the progression of cancers that contain a p53 mutation.
Tandem Dehydrogenation/Oxidation/Oxidative Cyclization Approach to Wrightiadione and Its Derivatives
作者:Yujeong Jeong、Youngtaek Moon、Sungwoo Hong
DOI:10.1021/acs.orglett.5b01618
日期:2015.7.2
Wrightiadione contains a unique tetracyclic isoflavone moiety and has been shown to exhibit a broad range of biological activities. An efficient and Straightforward synthetic method for generating the molecular complexity,of wrightiadione was developed, through three-step tandem dehydrogenation/oxidation/oxidative cyclization reactions with a Pd/Cu. catalytic system. This Unprecedented one-pot route utilizes a broad: range of substrates, providing a convenient and powerful synthetic tool for accessing naturally occurring tetracyclic isoflavone wrightiadione and its nitrogen-containing derivatives.
Synthesis of Bridged Benzazocines and Benzoxocines by a Titanium-Catalyzed Double-Reductive Umpolung Strategy
作者:Plamen Bichovski、Thomas M. Haas、Daniel Kratzert、Jan Streuff
DOI:10.1002/chem.201405852
日期:2015.2.2
A sequence of two titanium(III)‐catalyzed reductive umpolung reactions is reported that allows the rapid construction of benzazo‐ and benzoxozine building blocks. The first step is a reductive cross‐coupling of quinolones or chromones with Michael acceptors. This reaction proceeds with complete syn‐selectivity for the quinolone functionalization while the anti‐diastereomers are obtained as the major