Stereoselective Synthesis of Fluoroalkenoates and Fluorinated Isoxazolidinones: N-Substituents Governing the Dual Reactivity of Nitrones
作者:G. K. Surya Prakash、Zhe Zhang、Fang Wang、Martin Rahm、Chuanfa Ni、Marc Iuliucci、Ralf Haiges、George A. Olah
DOI:10.1002/chem.201303509
日期:2014.1.13
α‐Fluoroalkenoates and 4‐fluoro‐5‐isoxazolidinones are of vast interest due to their potential biological applications. We now demonstrate the syntheses of (E)‐α‐fluoroalkenoates and 4‐fluoro‐5‐isoxazolidinones by the reactions between nitrones and α‐fluoro‐α‐bromoacetate. By altering N‐substituents in nitrones, (E)‐α‐fluoroalkenoates and 4‐fluoro‐5‐isoxazolidinones can be achieved, respectively, with
[EN] FUSED BICYCLIC HETEROCYCLES AS THEREAPEUTIC AGENTS<br/>[FR] HÉTÉROCYCLES BICYCLIQUES FUSIONNÉS EN TANT QU'AGENTS THÉRAPEUTIQUES
申请人:UNIV NEW YORK
公开号:WO2020073031A1
公开(公告)日:2020-04-09
This disclosure relates to compounds, pharmaceutical compositions comprising them, and methods of using the compounds and compositions for treating diseases related to nicotinamide phosphoribosyltransferase (NAM FT) expression. More particularly, this disclosure relates to fused bicyclic heterocyclic compounds and pharmaceutical compositions thereof, methods of inhibiting NAM FT with these compounds, and methods of treating diseases related to NAMPT expression.
Radical Perfluoroalkylation Enabled by a Catalytically Generated Halogen Bonding Complex and Visible Light Irradiation
作者:Tarannum Tasnim、Calvin Ryan、Miranda L. Christensen、Christopher J. Fennell、Spencer P. Pitre
DOI:10.1021/acs.orglett.1c04139
日期:2022.1.14
chemistry. This report describes the use of a substituted hydroquinone catalyst to promote radical perfluoroalkylation reactions. Mechanistic studies indicate that the reaction is initiated through formation of a visible light-absorbing halogen bonding complex between the hydroquinone catalyst and the perfluoroalkyl halide radical precursor.
Straightforward Synthesis of Fluorinated Enals <i>via</i> Photocatalytic α-Perfluoroalkenylation of Aldehydes
作者:Christian Wulkesch、Constantin Czekelius
DOI:10.1021/acs.joc.1c00383
日期:2021.6.4
(Per)fluorinated substances represent an important compound class with regard to drug design and material chemistry. We found a mild, operationally simple, and inexpensive photocatalytic perfluoroalkenylation reaction giving tetrasubstituted, highly electron-deficient enals straight from aldehydes. This one-step reaction tolerates various functional groups and can be applied to a wide range of substrates
Natural isoquinolinium alkaloids possess a wide range of biological activities. The design and synthesis of mesoionic isoquinoliniums is of great importance. This paper reports the synthesis of unique mesoionic thiazoloisoquinolinium thiolates stabilized by aromatization and 1,3-dipolarization. Such compounds can be synthesized via the three component [2 + 2 + 1] cycloaddition reaction of isoquinolines