An efficient organocatalytic quadruple cascadereaction resulting in spiroxindole scaffolds bearing five quaternary stereocenters is reported. The complex cascadereaction is triggered by the scarcely explored vinylogous Michael addition of 3-alkylidene oxindoles to fullysubstituted enones and demonstrates the usefulness of the latter as efficient Michael acceptors in generating complex caged products
<i>cis</i>-Selective, Enantiospecific Addition of Donor–Acceptor Cyclopropanes to Activated Alkenes: An Iodination/Michael-Cyclization Cascade
作者:Nils L. Ahlburg、Peter G. Jones、Daniel B. Werz
DOI:10.1021/acs.orglett.0c02210
日期:2020.8.21
biologically interesting scaffolds, including barbiturates and isoxazolones. Mechanistic investigations were undertaken to explain the unusual diastereoselectivity and enantiospecificity; these suggest an iodination/Michael-cyclization cascade.
A Chemical Disruptor of the ClpX Chaperone Complex Attenuates the Virulence of Multidrug-Resistant <i>Staphylococcus aureus</i>
作者:Christian Fetzer、Vadim S. Korotkov、Robert Thänert、Kyu Myung Lee、Martin Neuenschwander、Jens Peter von Kries、Eva Medina、Stephan A. Sieber
DOI:10.1002/anie.201708454
日期:2017.12.4
production, which was quantified with a customized MS‐based assay platform. Transcriptome and whole‐proteome studies further confirmed the global reduction of virulence and revealed characteristic signatures of protein expression in the compound‐treated cells. Although these partially matched the pattern of ClpX knockout cells, further depletion of toxins was observed, leading to the intriguing perspective that
[EN] CLPX INHIBITORY COMPOUNDS FOR THE TREATMENT OF MULTI RESISTANT STAPHYLOCOCCUS AUREUS VIRULENCE AND FOR THE TREATMENT OF LEUKEMIA<br/>[FR] COMPOSÉS INHIBITEURS DE CLPX POUR LE TRAITEMENT DE LA VIRULENCE DE STAPHYLOCOCCUS AUREUS MULTIRÉSISTANT ET POUR LE TRAITEMENT DE LA LEUCÉMIE
申请人:UNIV MUENCHEN TECH
公开号:WO2018114965A1
公开(公告)日:2018-06-28
The present invention relates to antibiotic compounds and their use as ClpX inhibitors and in the treatment of bacterial infections, such as infections with multi-resistant Staphylococcus aureas, and in the treatment of leukemia. The present invention further relates to respective methods of treatment.
The phosphine-catalyzed cascade Michael addition/[4+2] cycloadditionreaction of tetrahydrobenzofuranone-derived allenoates and 2-arylidene-1,3-indanediones has been reported, affording spirocyclic 1,3-indanedione derivatives in moderate to high yields with moderate to good diastereoselectivities. A scaled-up reaction worked well under mild conditions, and a plausible mechanism is proposed.