‘In situ’ Generated ‘HCl’ - An Efficient Catalyst for Solvent-Free Hantzsch Reaction at Room Temperature: Synthesis of New Dihydropyridine Glycoconjugates
Synthesis of Non‐Classical Arylated C‐Saccharides through Nickel/Photoredox Dual Catalysis
作者:Audrey Dumoulin、Jennifer K. Matsui、Álvaro Gutiérrez‐Bonet、Gary A. Molander
DOI:10.1002/anie.201802282
日期:2018.5.28
synthetic tools to introduce saccharide derivatives into functionally complex molecules is of great interest, particularly in the field of drug discovery. Herein, we report a new route toward highly functionalized, arylated saccharides, which involves nickel‐catalyzed cross‐coupling of photoredox‐generated saccharyl radicals with a range of aryl‐ and heteroaryl bromides, triggered by an organic photocatalyst
Synthesis of non-classical heteroaryl C-glycosides via Minisci-type alkylation of N-heteroarenes with 4-glycosyl-dihydropyridines
作者:Qingbing Wang、Juan Duan、Pingping Tang、Gong Chen、Gang He
DOI:10.1007/s11426-020-9813-5
日期:2020.11
A radical-mediated method was reported for diastereoselective synthesis of non-classical heteroarylC-glycosides via Minisci-type alkylation of N-heteroarenes with 4-glycosyl-1,4-dihydropyridine (DHP) reagents. These DHP reagents serve as convenient precursors for various glycosyl radicals under the activation of single electron transfer (SET) oxidation by persulfate and visible light irradiation with
Synthesis of non-anomeric <i>C</i>-glycosyl pyrazolidinone derivatives <i>via</i> visible-light photoredox catalysis
作者:Renan. O. Gonçalves、Pedro H. R. Oliveira、Iva S. de Jesus、Natalí P. Debia、Diogo S. Lüdtke、Márcio W. Paixão
DOI:10.1039/d3ob00775h
日期:——
4-dihydropyridines (DHPs) as radical precursors. The protocol features mild reaction conditions, scalability, broad substrate scope, and good functional group tolerance. Moreover, the resulting pyrazolidinone moiety can be easily deprotected, acylated or reduced into a glycosyl β-alanine analog.
Synthesis of Reversed
<i>C</i>
‐Acyl Glycosides through Ni/Photoredox Dual Catalysis
作者:Shorouk O. Badir、Audrey Dumoulin、Jennifer K. Matsui、Gary A. Molander
DOI:10.1002/anie.201800701
日期:2018.5.28
incorporation of C‐glycosides in drug design has become a routine practice for medicinal chemists. These naturally occurring building blocks exhibit attractive pharmaceutical profiles, and have become an important target of synthetic efforts in recent decades.1 Described herein is a practical, scalable, and versatile route for the synthesis of non‐anomeric and unexploited C‐acyl glycosides through a Ni/photoredox
‘In situ’ Generated ‘HCl’ - An Efficient Catalyst for Solvent-Free Hantzsch Reaction at Room Temperature: Synthesis of New Dihydropyridine Glycoconjugates
作者:G. V. Sharma、K. Laxmi Reddy、P. Sree Lakshmi、Palakodety Radha Krishna
DOI:10.1055/s-2005-921744
日期:——
HCl, generated in situ from 2,4,6-trichloro[1,3,5]triazine (TCT, cyanuric chloride), catalyzed a solvent free Hantzsch reaction at room temperature with enhanced reaction rates. The reaction conditions allow facile preparation of glycoconjugates of dihydropyridines under mild reaction conditions in high yields.