Results 131 to 140 of about 103,057 (335)

From Oxygen to Tellurium: The Impact of the Chalcogen on Nucleophilicities and Basicities of Isochalcogenourea Catalysts

open access: yesAngewandte Chemie International Edition, EarlyView.
Incorporation of different chalcogen atoms allows for the fine‐tuning of nucleophilicity and basicity of commonly used isochalcogenourea organocatalyst scaffolds. Kinetic and thermodynamic descriptors for the molecular properties of the catalysts are introduced as tools to predict their efficiency and tested in acyl transfer and allenoate activation ...
Lotte Stockhammer   +8 more
wiley   +1 more source

ZINC OXIDE - SINTERED CALCIUM PHOSPHATE CATALYZED GREEN SYNTHESIS OF ESTERS AND AMIDES

open access: yesScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2020
Herein, the application of zinc oxide supported on sintered calcium phosphate (SCaP) as a catalyst in acylation reaction is described. This catalyst was found to be highly effective in solvent free acylation of various phenols, alcohols and amines ...
S. Sumathi, B.R. Saikishore Kumar
doaj  

Small Molecules as Alternate Substrates for 3-Methylglutaconylation. [PDF]

open access: yesJIMD Rep
ABSTRACT The leucine catabolism pathway intermediate, trans‐3‐methylglutaconyl (3MGC) CoA, is susceptible to a series of non‐enzymatic reactions that generate organic acid waste products and protein 3MGCylation. These reactions proceed when inborn errors of metabolism (IEM) in HMGCL or AUH lead to enzyme deficiencies. When trans‐3MGC‐CoA levels rise, a
Jennings EA, Romenskaia I, Ryan RO.
europepmc   +2 more sources

Inhibitors of \u3cem\u3eN\u3csup\u3eα\u3c/sup\u3e\u3c/em\u3e-acetyl-l-ornithine Deacetylase: Synthesis, Characterization and Analysis of their Inhibitory Potency [PDF]

open access: yes, 2010
A series of N α-acyl (alkyl)- and N α-alkoxycarbonyl-derivatives of l- and d-ornithine were prepared, characterized, and analyzed for their potency toward the bacterial enzyme N α-acetyl-l-ornithine deacetylase (ArgE).
Budesinsky, M.   +8 more
core   +1 more source

A Comprehensive Overview of Cellulose and Its Derivatives: Structural Features and Emerging Applications

open access: yesJournal of Applied Polymer Science, EarlyView.
From plant cell wall architecture to advanced materials: cellulose and its derivatives as versatile building blocks. ABSTRACT Growing interest in cellulose as a versatile material has driven extensive research into its chemical architecture, processing methods, mechanical properties, aggregation behavior, and structural organization, both in solution ...
Denys M. M. Fertonani   +7 more
wiley   +1 more source

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