Results 11 to 20 of about 13,012 (246)

Structure-based prediction and identification of 4-epimerization activity of phosphate sugars in class II aldolases [PDF]

open access: yesScientific Reports, 2017
Sugar 4-epimerization reactions are important for the production of rare sugars and their derivatives, which have various potential industrial applications.
Seon-Hwa Lee   +6 more
doaj   +2 more sources

Synthesis of rare sugars via epimerization catalyzed by tin-organic frameworks [PDF]

open access: yesCurrent Research in Green and Sustainable Chemistry
Epimerization of readily available monosaccharides presents an atom-efficient approach to expand the portfolio of rare monosaccharides. Here, we report tin-organic frameworks (Sn-OF) as a highly selective catalyst for synthesis of rare monosaccharides ...
Valérie Toussaint   +3 more
doaj   +3 more sources

Epimerization-free C-term Activation of Peptide Fragments by Ball-Milling [PDF]

open access: yes, 2020
Ball-milling enabled to perform [2+1], [2+2], and [2+3] peptide couplings with high yields and, if any, very low epimerization. Very good results were obtained with peptide fragments containing highly epimerization-prone and/or highly hindered amino ...
Marion, Jean   +5 more
core   +3 more sources

The Kinetic Stereocontrol in Brøsted Acid-catalyzed Pictet-Spengler Reaction and the Dynamic Epimerization Mechanism via Crystallization-induced Diastereomer Transformations [PDF]

open access: yes, 2023
The merging of asymmetric catalysis with crystallization-induced diastereomer transformations (CIDTs) shows promise as a practical method for the synthesis of chiral molecules with one or more epimerization carbons.
Liuqun, Gu
core   +1 more source

Visible-Light-Mediated, Diastereoselective Epimerization of Exocyclic Amines [PDF]

open access: yes, 2023
Stereoselective α-amino C–H epimerization of exocyclic amines is achieved via photoredox catalyzed, thiyl-radical mediated, reversible hydrogen atom transfer to provide thermodynamically controlled anti/syn isomer ratios.
Aidan S. Liu (17710194)   +2 more
core   +1 more source

Synthesis of Four Orthogonally Protected Rare l-Hexose Thioglycosides from d-Mannose by C-5 and C-4 Epimerization

open access: yesMolecules, 2022
l-Hexoses are important components of biologically relevant compounds and precursors of some therapeuticals. However, they typically cannot be obtained from natural sources and due to the complexity of their synthesis, their commercially available ...
Fruzsina Demeter   +3 more
doaj   +1 more source

Two-Step Epimerization of Deoxynivalenol by Quinone-Dependent Dehydrogenase and Candida parapsilosis ACCC 20221

open access: yesToxins, 2023
Deoxynivalenol (DON), one of the main mycotoxins with enteric toxicity, genetic toxicity, and immunotoxicity, and is widely found in corn, barley, wheat, and rye.
Yuqian Tang, Dingna Xiao, Chendi Liu
doaj   +1 more source

Porous Tin-Organic Frameworks as Selective Epimerization Catalysts in Aqueous Solutions [PDF]

open access: yes, 2023
Epimerization of sugars is a carbon-efficient route not only to produce rare carbohydrates but also to extend the product scope for chemical production in future biorefineries.
Willms, Andrea   +3 more
core   +1 more source

Epimerization-Free Preparation of C‑Terminal Cys Peptide Acid by Fmoc SPPS Using Pseudoproline-Type Protecting Group [PDF]

open access: yes, 2019
Preparation of C-terminal Cys-containing peptide acid by Fmoc solid-phase peptide synthesis (SPPS) is difficult due to base-mediated epimerization at Cys.
Shun Masuda (7592351)   +2 more
core   +1 more source

Contribution of Inhibitory Metabolites and Competition for Nutrients to Colonization Resistance against Clostridioides difficile by Commensal Clostridium

open access: yesMicroorganisms, 2021
Clostridioides difficile is an anaerobic pathogen that causes significant morbidity and mortality. Understanding the mechanisms of colonization resistance against C. difficile is important for elucidating the mechanisms by which C.
Amber D. Reed, Casey M. Theriot
doaj   +1 more source

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