Results 11 to 20 of about 194,006 (386)

Hydroxylation decoration patterns of flavonoids in horticultural crops: chemistry, bioactivity, and biosynthesis

open access: yesHorticulture Research, 2022
Flavonoids are the most widespread polyphenolic compounds and are important dietary constituents present in horticultural crops such as fruits, vegetables, and tea.
Yilong Liu   +8 more
semanticscholar   +1 more source

Electrochemical aromatic C–H hydroxylation in continuous flow

open access: yesNature Communications, 2022
The direct hydroxylation of arene C–H bonds is a highly sought-after transformation but remains an unsolved challenge due to the difficulty in efficient and regioselective C–H oxygenation and high reactivity of the phenolic products leading to ...
Hao Long   +4 more
semanticscholar   +1 more source

A tautomeric ligand enables directed C‒H hydroxylation with molecular oxygen

open access: yesScience, 2021
Easing oxygen into arenes Although oxygen is all around us, it is often surprisingly difficult to use it for selective chemical oxidations, necessitating more expensive, wasteful alternatives. Li et al.
Zhen Li   +8 more
semanticscholar   +1 more source

Decarboxylative Hydroxylation of Benzoic Acids

open access: yesAngewandte Chemie, 2021
Herein, we report the first decarboxylative hydroxylation to synthesize phenols from benzoic acids at 35 °C via photoinduced ligand‐to‐metal charge transfer (LMCT)‐enabled radical decarboxylative carbometalation.
Wanqi Su, P. Xu, T. Ritter
semanticscholar   +1 more source

PHD1 controls muscle mTORC1 in a hydroxylation-independent manner by stabilizing leucyl tRNA synthetase

open access: yesNature Communications, 2020
mTORC1 is an important regulator of muscle mass but how it is modulated by oxygen and nutrients is not completely understood. We show that loss of the prolyl hydroxylase domain isoform 1 oxygen sensor in mice (PHD1KO) reduces muscle mass.
G. D’Hulst   +13 more
semanticscholar   +1 more source

Enzymatic functionalization of carbon-hydrogen bonds [PDF]

open access: yes, 2011
The development of new catalytic methods to functionalize carbon–hydrogen (C–H) bonds continues to progress at a rapid pace due to the significant economic and environmental benefits of these transformations over traditional synthetic methods.
Arnold, Frances H.   +2 more
core   +1 more source

Bacterial cytochrome P450-catalyzed regio- and stereoselective steroid hydroxylation enabled by directed evolution and rational design

open access: yesBioresources and Bioprocessing, 2020
Steroids are the most widely marketed products by the pharmaceutical industry after antibiotics. Steroid hydroxylation is one of the most important functionalizations because their derivatives enable a higher biological activity compared to their less ...
Xiaodong Zhang   +6 more
semanticscholar   +1 more source

Catalysts on Demand: Selective Oxidations by Laboratory-Evolved Cytochrome P450 BM3 [PDF]

open access: yes, 2009
Efficient catalysts for selective oxidation of C-H bonds using atmospheric oxygen are highly desirable to decrease the economic and environmental costs associated with conventional oxidation processes.
Arnold, Frances H., Lewis, Jared C.
core   +2 more sources

Gibberellin Metabolism in Flowering Plants: An Update and Perspectives

open access: yesFrontiers in Plant Science, 2020
In plants, gibberellins (GAs) play important roles in regulating growth and development. Early studies revealed the large chemodiversity of gibberellins in plants, but only GA1, GA3, GA4, and GA7 show biological activity that controls plant development ...
Juan He   +8 more
doaj   +1 more source

Peroxide-Mediated Oxygenation of Organic Compounds by Fungal Peroxygenases

open access: yesAntioxidants, 2022
Unspecific peroxygenases (UPOs), whose sequences can be found in the genomes of thousands of filamentous fungi, many yeasts and certain fungus-like protists, are fascinating biocatalysts that transfer peroxide-borne oxygen (from H2O2 or R-OOH) with high ...
Martin Hofrichter   +6 more
doaj   +1 more source

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