Publications related to Keto acid

Variants of the gain domain of adhesion g protein-coupled receptors

Patrick Daniel Barth, Matthieu François Marfoglia, Louis Georges Baptiste Dumas

The present invention relates to variants of the GAIN domain (G-protein-coupled receptor autoproteolysis-inducing domain) of an adhesion G protein-coupled receptor (ADGRG), such as a GAIN domain variant comprising or consisting of the amino acid sequence o ...

2023

Ni-Based Nanoparticles Catalyzed Hydrodeoxygenation of Ketones, Ethers, and Phenols to (Cyclo) Aliphatic Compounds

Paul Joseph Dyson, Mingyang Liu, Xiang Li, Yelin Hu, Matthias Beller

Catalytic hydrodeoxygenation is of prime importance in the valorization of biomass-based feedstocks to produce essential chemicals and fuels. To carry out this process in a more cost-effective and sustainable manner, the use of 3D-metal-based nanostructure ...

Amer Chemical Soc2023

In vivo detection of d-amino acid oxidase with hyperpolarized d-[1-C-13]alanine

Rolf Gruetter, Hikari Ananda Infinity Yoshihara, Alice Radaelli

d-amino acid oxidase (DAO) is a peroxisomal enzyme that catalyzes the oxidative deamination of several neutral and basic d-amino acids to their corresponding alpha-keto acids. In most mammalian species studied, high DAO activity is found in the kidney, liv ...

2020

Development of New Strategies of Umpolung with Cyclic Hypervalent Iodine Reagents

Paola Caramenti

Organic chemistry is essential for the development of a modern society and technical progress requires the continuous development of synthetic methodologies Novel, efficient, selective and flexible protocols are employed to access complex frameworks from s ...

EPFL2019

A Water-Bridged H-Bonding Network Contributes to the Catalysis of the SAM-Dependent C-Methyltransferase HcgC

Xile Hu, Tao Xu, Lichen Bai

[Fe]-hydrogenase hosts an iron-guanylylpyridinol (FeGP) cofactor. The FeGP cofactor contains a pyridinol ring substituted with GMP, two methyl groups, and an acylmethyl group. HcgC, an enzyme involved in FeGP biosynthesis, catalyzes methyl transfer from S- ...

Wiley-VCH Verlag GmbH2017

Enantioselective Synthesis of Homoallylic Azides and Nitriles via Palladium-Catalyzed Decarboxylative Allylation

Jérôme Waser, Paola Caramenti, Maria Victoria Vita

Azides and nitriles are important building blocks for the synthesis of nitrogen-containing bioactive compounds. The first example of enantioselective palladiumcatalyzed decarboxylative allylation of alpha-azido and cyano beta-ketoesters is reported. Indano ...

American Chemical Society2015

Room-Temperature Decarboxylative Alkynylation of Carboxylic Acids Using Photoredox Catalysis and EBX Reagents

Jérôme Waser, Franck Le Vaillant, Thibaut Christian Courant

Alkynes are used as building blocks in synthetic and medicinal chemistry, chemical biology, and materials science. Therefore, efficient methods for their synthesis are the subject of intensive research. Herein, we report the direct synthesis of alkynes fro ...

Wiley-Blackwell2015

Azidation of beta-Keto Esters and Silyl Enol Ethers with a Benziodoxole Reagent

Jérôme Waser, Maria Victoria Vita

The efficient azidation of beta-keto esters and silyl enol ethers using a benziodoxole-derived azide transfer reagent is reported. The azidation of cyclic beta-keto esters could be achieved in up to quantitative yields in the absence of any catalyst. In th ...

American Chemical Society2013

Ethynylbenziodoxolones (EBX) as Reagents for the Ethynylation of Stabilized Enolates

Jérôme Waser, Jonathan Brand, Davinia Fernández González

Herein, we report a detailed study on the electrophilic alkynylation of cyclic keto esters and amides with ethynylbenziodoxolone (EBX) reagents. The structure and stability of this class of reagents is first described more in details. Differential scanning ...

Wiley-Blackwell2013

Synthesis of Indoles by Copper-Catalyzed Heteroannulation of o-Aminophenylboronic Acid Pinacol Esters with β-Keto Esters

Qian Wang, Jieping Zhu, Ala Bunescu

Copper-catalyzed coupling of ortho-aminophenylboronic acid pinacol esters with β-ketoesters afforded, under mild base-free oxidative conditions, 2,3-disubstituted indoles featuring a key Chan-Lam type carbon-carbon bond forming reaction. ...

Georg Thieme Verlag2012

New Acetylene Chemistry : Direct [alpha]-Alkynylation of Carbonyls with Ethynyl Benziodoxolones (EBX)

Davinia Fernández González

This thesis is divided in seven main chapters including an introduction about the state of the art in the field, four main chapters describing the main part of the work, a short insight on the implications of the presented results for other research projec ...

EPFL2011

Radical Stability Directs Electron Capture and Transfer Dissociation of Beta-Amino Acids in Peptides

Yury Tsybin, Hisham Ben Hamidane, Aleksey Vorobyev

We report on the characteristics of the radical-ion-driven dissociation of a diverse array of beta-amino acids incorporated into alpha-peptides, as probed by tandem electron-capture and electron-transfer dissociation (ECD/ETD) mass spectrometry. The report ...

2010

Tailoring hydrogel degradation and drug release via neighboring amino acid-controlled ester hydrolysis

Matthias Lütolf, Jeffrey Alan Hubbell, Yun Suk Jo, Jay Gantz

We present a versatile scheme to rationally modulate the hydrolysis rate of ester bonds in hydrophilic polymer networks via adjacent charged amino acids. As soluble model systems, two cysteine-bearing oligopeptides containing either positively charged argi ...

2009

A Theoretical Study on the Reactivity of a Rhenium Hydroxo-Carbonyl Complex Towards beta-Lactams

Pablo Campomanes Ramos

The mechanism of the reaction between the complex [Re(OH)(CO)(3)(N2C2H4)] and azetidin-2-one or 3-formylamino-N-sulf onatoazetidin-2-one was investigated by using the B3LYP density functional theory methodology in conjunction with the PCM-UAHF model to tak ...

2008

Non-Cytotoxic, Bifunctional EuIII and TbIII Luminescent Macrocyclic Complexes for Luminescence Resonant Energy- Transfer Experiments

Jean-Claude Bünzli, Anne-Sophie Chauvin, Caroline Vandevyver

A new macrocyclic ligand,

L^3

, has been synthesised, based on the cyclen framework grafted with three phenacyl light-harvesting groups and a C5-alkyl chain bearing a carboxylic acid function as a potential linker for biological material. Acidity constant ...

2007