Catalytic Carbocation Generation Enabled by the Mesolytic Cleavage of Alkoxyamine Radical Cations
作者:Qilei Zhu、Emily C. Gentry、Robert R. Knowles
DOI:10.1002/anie.201604619
日期:2016.8.16
weak C−O bond. Spontaneous scission results in the formation of the stable nitroxyl radical TEMPO. as well as a reactive carbocation intermediate that can be intercepted by a wide range of nucleophiles. Notably, this process occurs underneutralconditions and at comparatively mild potentials, enabling catalytic cation generation in the presence of both acid sensitive and easily oxidized nucleophilic
α-Chiral alkyl primaryamines are virtually universal synthetic precursors for all other α-chiral N-containing compounds ubiquitous in biological, pharmaceutical, and material sciences. The enantioselective amination of common alkyl halides with ammonia is appealing for potential rapid access to α-chiral primaryamines, but has hitherto remained rare due to the multifaceted difficulties in using ammonia
[EN] BENZOPYRANE AND IMIDAZOLE DERIVATIVES USEFUL FOR THE STABILIZATION OF AMYLOIDOGENIC IMMUNOGLOBULIN LIGHT CHAINS<br/>[FR] DÉRIVÉS DE STABILISATION DE BENZOPYRANE ET D'IMIDAZOLE UTILISÉS POUR LA STABILISATION DE CHAÎNES LÉGÈRES D'IMMUNOGLOBULINES AMYLOÏDOGÉNIQUES
申请人:SCRIPPS RESEARCH INST
公开号:WO2020205683A1
公开(公告)日:2020-10-08
In immunoglobulin light chain amyloidosis (AL), the unique antibody light chain (LC) protein that is secreted by monoclonal plasma cells in each patient misfolds and/or aggregates, a process leading to organ degeneration. For treating AL patients, such as those with substantial cardiac involvement who have difficulty tolerating existing chemotherapy regimens, provided herein are small molecule compounds of Formula Ia, Formula Ib, and Formula II that are kinetic stabilizers of the native dimeric structure of full-length LCs, which compounds can slow or stop the amyloidogenicity cascade at its origin.
Discovery of Potent Coumarin-Based Kinetic Stabilizers of Amyloidogenic Immunoglobulin Light Chains Using Structure-Based Design
作者:Nicholas L. Yan、Diogo Santos-Martins、Reji Nair、Alan Chu、Ian A. Wilson、Kristen A. Johnson、Stefano Forli、Gareth J. Morgan、H. Michael Petrassi、Jeffery W. Kelly
DOI:10.1021/acs.jmedchem.1c00339
日期:2021.5.13
interface between the two variable domains of the LC homodimer. We hypothesized that extending the stabilizers beyond this initially characterized binding site would improve affinity. Here, using protease sensitivity assays, we identified stabilizers that can be divided into four substructures. Some stabilizers exhibit nanomolar EC50 values, a 3000-fold enhancement over the screening hits. Crystal structures
[EN] AMINOHETEROARYL COMPOUNDS AS PROTEIN TYROSINE KINASE INHIBITORS<br/>[FR] COMPOSES AMINOHETEROARYLES EN TANT QU'INHIBITEURS DES PROTEINES TYROSINE KINASES
申请人:PFIZER
公开号:WO2006021886A1
公开(公告)日:2006-03-02
Aminoheteroaryl compounds are provided, as well as methods for their synthesis and use. Preferred compounds are potent inhibitors of the c-Met protein kinase, and are useful in the treatment of abnormal cell growth disorders, such as cancers.