Results 191 to 200 of about 4,103,456 (328)

Constant Enzymatic in situ Production of H2O2 for an Unspecific Peroxygenase by an l–Amino Acid Oxidase

Advanced Synthesis &Catalysis, EarlyView.
Abstract Unspecific Peroxygenases have been the subject of a lot of research in the recent past as they offer opportunities for green hydroxylation reactions using hydrogen peroxide (H2O2) as donor. A striking problem of UPOs is their low stability against their own co‐substrate H2O2. In order to prevent the deactivation, we developed an enzyme cascade
Simon Last, Tobias Heinks, Niklas Dietz, Simon Koopmeiners, Gabriele Fischer von Mollard, Martin J. Weissenborn, Jan von Langermann   +6 more
wiley   +1 more source

Identification of a panel of volatile organic compounds in urine for early detection of for bladder cancer. [PDF]

Sci Rep
Mao M, Zhang Y, Liu H, Jiang X, Zhao Y, Liu Q, Niu Z, Zhang X.   +7 more
europepmc   +1 more source

Asymmetric Synthesis of Highly Substituted Spiro[2H‐pyrrole‐2,3‐Succinimide] Derivatives by Copper‐Catalyzed Post‐Ugi Reactions

Advanced Synthesis &Catalysis, EarlyView.
Abstract Herein we present a novel one‐pot methodology for the synthesis of enantioenriched 2H‐pyrrolespirosuccinimides by copper‐catalyzed reactions on Ugi adducts derived from enantiopure α‐alkylbenzyl amines through a chirality transfer process. We have proposed a mechanism, supported by density functional theory (DFT) calculations, where a hydrogen
Javier Gómez‐Ayuso, Israel Carreira‐Barral, Roberto Quesada, María García‐Valverde   +3 more
wiley   +1 more source

Spectroscopic and Chromatographic Characterization of Two Isomeric Cathinone Derivatives: <i>N</i>-Butyl-Norbutylone and <i>N</i>-Ethylhexylone. [PDF]

Molecules
Rojkiewicz M, Kuś P, Jampilek J, Bąk A, Kozik V.   +4 more
europepmc   +1 more source

Gas Chromatography [PDF]

Proceedings of the Royal Society of Medicine, 1968
openaire   +3 more sources

Development of Photo‐Biocatalytic Redox System for Asymmetric Synthesis of Optically Active Amines Using Blue Light and Transaminases. A Case Study Toward Mavacamten

Advanced Synthesis &Catalysis, EarlyView.
Abstract α‐Chiral amines are versatile building blocks for the asymmetric synthesis of optically pure high‐added‐value chemicals, including pharmaceuticals, agrochemicals, and natural products. Herein, we report a one‐pot, two‐step sequential deracemization of racemic sec‐alcohols to optically enriched primary amines throught a photo‐biocatalytic ...
Natalia Antos, Aleksandra Rudzka, Anna Hoser, Tamara Reiter, Wolfgang Kroutil, Paweł Borowiecki   +5 more
wiley   +1 more source

Multidimensional gas chromatography in food analysis

, 2017
Yada Nolvachai, Chadin Kulsing, P. Marriott   +2 more
semanticscholar   +1 more source

A Novel Method to Determine the Carbon Isotopic Composition of Inositol Hexaphosphate (Phytate) in Soil by Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry. [PDF]

Rapid Commun Mass Spectrom
Sarangi V, Spohn M.
europepmc   +1 more source

Development of Hydrofluoroolefin (HFO)‐Based Direct O‐Fluoroalkenylation of Phenols Targeting Tyrosine Conjugation

Advanced Synthesis &Catalysis, EarlyView.
Abstract Methodology for direct fluoroalkenylation of phenolic OH function was developed using a fluorinated electrophilic reagent derived from HFO1234ze gas. Besides various functionalized phenols, tyrosine and tyrosine‐based peptides were successfully conjugated under the optimized reaction conditions.
Rihárd Sisa, Ferenc Béke, Zoltán Novák   +2 more
wiley   +1 more source

Gas Endeavour: An Innovative Equipment for Estimating Methane Kinetics During <i>In Vitro</i> Rumen Fermentation. [PDF]

Animals (Basel)
Iqbal R, Arango S, Tagliapietra F, Bailoni L.   +3 more
europepmc   +1 more source