Results 31 to 40 of about 81,520 (144)

Computational Study of Ortho-Substituent Effects on Antioxidant Activities of Phenolic Dendritic Antioxidants

open access: yesAntioxidants, 2020
Antioxidants are an important component of our ability to combat free radicals, an excess of which leads to oxidative stress that is related to aging and numerous human diseases.
C. Y. Lee   +5 more
semanticscholar   +1 more source

Glycosyl ortho-(1-phenylvinyl)benzoates versatile glycosyl donors for highly efficient synthesis of both O-glycosides and nucleosides

open access: yesNature Communications, 2020
Both of O-glycosides and nucleosides are important biomolecules with crucial rules in numerous biological processes. Chemical synthesis is an efficient and scalable method to produce well-defined and pure carbohydrate-containing molecules for deciphering
Penghua Li   +8 more
semanticscholar   +1 more source

Molecular Engineering Strategies for Organic Pre‐Sodiation: Progress and Challenges

open access: yesAdvanced Science, Volume 12, Issue 15, April 17, 2025.
This review delves into the molecular engineering strategies for organic pre‐sodiation techniques, examining the intricate structure‐activity relationships between functional group modifications and oxidation decomposition/reduction potentials of organic pre‐sodiation materials.
Zhijian Cai, Huai Chen, Fujun Niu
wiley   +1 more source

Iron N‐Doped Carbon Nanoarchitectonics for C─H Bond Activation of Methylarenes and Esterification Reactions

open access: yesSmall, Volume 21, Issue 16, April 23, 2025.
In this work, iron nanoparticles adorned on the surface engineered nitrogen‐doped carbon (FeNP@NC‐BA) prepared via wet chemistry followed by high‐temperature pyrolysis. The reusable catalyst employed for the methylarene oxidation and esterification of acid with alcohols leads to a 99% conversion and selectivity.
Arun D. Kute   +2 more
wiley   +1 more source

A Unique Case of ′in Situ’ Bifluoride Triggered Formation of Supramolecular Organogels Using Isophthalamide Hydrogen Bond Donating Receptors.

open access: yesChemistry – A European Journal, Volume 31, Issue 13, March 3, 2025.
The isopthalamide based receptor H2L2 featuring two p‐benzoic acid units deprotonates in the presence of TBAF and the deprotonated L22− binds the in situ formed HF2−. Combination of the H‐bond donor abilities of the isophthalamide motif and the presence of the carboxylic acid moieties promotes a complex and unexpected isodesmic self‐assembly process ...
Giacomo Picci   +9 more
wiley   +1 more source

The seventh blind test of crystal structure prediction: structure generation methods

open access: yesActa Crystallographica Section B, Volume 80, Issue 6, Page 517-547, December 2024.
The results of the seventh blind test of crystal structure prediction are presented, focusing on structure generation methods.A seventh blind test of crystal structure prediction was organized by the Cambridge Crystallographic Data Centre featuring seven target systems of varying complexity: a silicon and iodine‐containing molecule, a copper ...
Lily M. Hunnisett   +154 more
wiley   +1 more source

Chemical Reactivities of ortho-Quinones Produced in Living Organisms: Fate of Quinonoid Products Formed by Tyrosinase and Phenoloxidase Action on Phenols and Catechols

open access: yesInternational Journal of Molecular Sciences, 2020
Tyrosinase catalyzes the oxidation of phenols and catechols (o-diphenols) to o-quinones. The reactivities of o-quinones thus generated are responsible for oxidative browning of plant products, sclerotization of insect cuticle, defense reaction in ...
S. Ito, M. Sugumaran, K. Wakamatsu
semanticscholar   +1 more source

Enhanced Organocatalytic Processes through an Engineered Acid‐Base Site Bifunctional Pore in a Zirconium Metal‐Organic Framework

open access: yesChemCatChem, Volume 16, Issue 18, September 23, 2024.
The introduction of an acidic and a basic functionality, precisely located, within a metal‐organic framework (MOF) enhances the catalytic activity for Knoevenagel and related condensations. Modified MOF‐808 containing 5‐aminoisophthalic yielded higher rates among all explored materials.
José María Moreno   +4 more
wiley   +1 more source

Molecular basis of one‐step methyl anthranilate biosynthesis in grapes, sweet orange, and maize

open access: yesThe Plant Journal, Volume 119, Issue 5, Page 2363-2374, September 2024.
SUMMARY Plants synthesize an array of volatile compounds, many of which serve ecological roles in attracting pollinators, deterring herbivores, and communicating with their surroundings. Methyl anthranilate (MeAA) is an anti‐herbivory defensive volatile responsible for grape aroma that is emitted by several agriculturally relevant plants, including ...
Michael A. Fallon   +7 more
wiley   +1 more source

Is Simultaneous Binding to DNA and Gyrase Important for the Antibacterial Activity of Cystobactamids?

open access: yesChemistry – A European Journal, Volume 30, Issue 19, April 2, 2024.
How do they bind ? New cystobactamid derivatives with duplicated triarene unit served to elucidate their bent shape conformation (CX‐CY‐CZ angle of ~110 degrees) by NMR analysis. Elongation of the triarene unit of cystobactamids lead to increased DNA binding affinity implying that they exert their inhibitory activity by interaction with the gyrase ...
Danny Solga   +9 more
wiley   +1 more source

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