[EN] MYOGLOBIN-BASED CATALYSTS FOR CARBENE TRANSFER REACTIONS<br/>[FR] CATALYSEURS À BASE DE MYOGLOBINE POUR RÉACTIONS DE TRANSFERT DE CARBÈNE
申请人:UNIV ROCHESTER
公开号:WO2016086015A1
公开(公告)日:2016-06-02
Methods are provided for carrying out carbene transfer transformations such as olefin cyclopropanation reactions, carbene heteroatom-H insertion reactions (heteroatom = N, S, Si), sigmatropic rearrangement reactions, and aldehyde olefination reactions with high efficiency and selectivity by using a novel class of myoglobin-based biocatalysts. These methods are useful for the synthesis of a variety of organic compounds which contain one or more new carbon-carbon or carbon-heteroatom (N, S, or Si) bond. The methods can be applied for conducting these transformations in vitro (i.e., using the biocatalyst in isolated form) and in vivo (i.e., using the biocatalyst in a whole cell system).
Visible‐Light Catalyzed [1+2+2] Cycloaddition Reactions Enabled by the Formation of Methylene Nitrones
作者:Jing Guo、Ying Xie、Wen‐Tian Zeng、Qiao‐Lei Wu、Jiang Weng、Gui Lu
DOI:10.1002/adsc.202000858
日期:2020.12.8
Nitrones are key intermediates in organic synthesis. Herein, we report the first photo‐redox synthesis of methylene nitrone intermediates from nitroarenes and arylamines. The highly reactive methylene nitrones are in situ trapped by alkenes to afford various isoxazolidines. This three‐component reaction features the use of N,N‐dimethylanilines or N‐aryl glycines as C1 building blocks, which allow for
An enantioselective aerobic decarboxylative Povarov reaction of N-aryl α-amino acids with methylenephthalimidines through cooperative photoredox and chiralBrønstedacidcatalysis is reported. With a transition metal-free dual catalytic system including a chiral phosphoric acid and DPZ as a photosensitizer mediated by visible light, the transformations provided a series of valuable chiral isoindolin-1-ones
Photoredox-catalysed formal [3+2] cycloaddition of <i>N</i>-aryl α-amino acids with isoquinoline <i>N</i>-oxides
作者:Xiangyuan Liu、Yanli Yin、Zhiyong Jiang
DOI:10.1039/c9cc06249a
日期:——
A formal [3+2] cycloaddition of N-aryl α-amino acids with isoquinoline N-oxides via visible light-driven photoredox catalysis is reported. Under transition metal-free conditions using a dicyanopyrazine-derived chromophore (DPZ) as the photoredox catalyst, the transformation was efficient and led to a series of important diazabicyclo[3.2.1]octane-based N-heterocyclic compounds. This work demonstrates
Design, synthesis and biological evaluation of B-region modified diarylalkyl amide analogues as novel TRPV1 antagonists
作者:Young Taek Han、Shao-Mei Yang、Xiao-Yuan Wang、Fu-Nan Li
DOI:10.1007/s12272-013-0228-x
日期:2014.4
Design, synthesis and biologicalevaluation of B-region, known to be a dipolar interacting pharmacophore, modified diarylalkyl amide analogues for novel TRPV1 (transient receptor potential channel, vanilloid subfamily member 1) antagonists was described. A variety of moieties including guanidines, heterocyclic rings, cinnamides, and α-substituted acetamides were introduced at the B-region. TRPV1 antagonistic