Results 21 to 30 of about 543,462 (387)

Synthesis of spiroannulated and 3-arylated 1,2,4-trioxanes from mesitylol and methyl 4-hydroxytiglate by photooxygenation and peroxyacetalization

open access: yesBeilstein Journal of Organic Chemistry, 2010
Cycloalkanones were utilized in the Lewis acid catalyzed peroxyacetalization of ß-hydroperoxy homoallylic alcohols (prepared by the ene reaction of the allylic alcohols mesitylol and methyl 4-hydroxytiglate, respectively, with singlet oxygen) to give ...
Axel G. Griesbeck   +2 more
doaj   +1 more source

1,2,5,10,11,14-Hexaoxadispiro[5.2.5.2]hexadecanes: Novel Spirofused Bis-Trioxane Peroxides

open access: yesMolecules, 2008
A set of new bis-spirofused 1,2,4-trioxanes 4a-d was obtained from the reaction of cyclohexane-1,4-dione with allylic hydroperoxides 2a-d, bearing an additional hydroxy group in the homoallylic position, by diastereoselective photooxygenation of allylic ...
Tamer T. El-Idreesy   +5 more
doaj   +1 more source

Oxidation of Drugs during Drug Product Development: Problems and Solutions

open access: yesPharmaceutics, 2022
Oxidation is the second most common degradation pathway for pharmaceuticals, after hydrolysis. However, in contrast to hydrolysis, oxidation is mechanistically more complex and produces a wider range of degradation products; oxidation is thus harder to ...
Alen Gabrič, Žiga Hodnik, Stane Pajk
doaj   +1 more source

Metal-free syn-dioxygenation of alkenes [PDF]

open access: yes, 2013
Reactions employing inexpensive reagents from sustainable sources and with low toxicity are becoming increasingly desirable from an academic and industrial perspective.
Ashikari   +60 more
core   +1 more source

Tetraoxanes as inhibitors of apicomplexan parasites Plasmodium falciparum and Toxoplasma gondii and anti-cancer molecules [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
New cyclohexylidene 1,2,4,5-tetraoxanes with polar guanidine and urea based groups were synthesized and evaluated for antimalarial activity against chloroquine resistant and susceptible Plasmodium falciparum strains.
Opsenica Dejan M.   +6 more
doaj   +1 more source

Effects of hole self-trapping by polarons on transport and negative bias illumination stress in amorphous-IGZO

open access: yes, 2017
The effects of hole injection in amorphous-IGZO is analyzed by means of first-principles calculations. The injection of holes in the valence band tail states leads to their capture as a polaron, with high self-trapping energies (from 0.44 to 1.15 eV ...
A. de Jamblinne de Meux   +4 more
core   +1 more source

Plasma total antioxidant capacity and peroxidation biomarkers in psoriasis [PDF]

open access: yes, 2016
Systemic biomarkers of oxidative stress can be relevant for assessment of psoriasis severity, for prediction of the outcome of therapy and of the development of comorbidities.
Cavaliere, Arturo   +2 more
core   +2 more sources

Spectroscopic Signature of Oxidized Oxygen States in Peroxides [PDF]

open access: yes, 2018
Recent debates on the oxygen redox behaviors in battery electrodes have triggered a pressing demand for the reliable detection and understanding of non-divalent oxygen states beyond conventional absorption spectroscopy.
Chuang, Yi-de   +14 more
core   +3 more sources

Lipid Peroxides and α-Tocopherol in Rat Streptozotocin-Induced Diabetes Mellitus [PDF]

open access: yes, 1982
Measurement of lipid peroxides and alpha-tocopherol was undertaken in rats with streptozotocin-induced diabetes. In sera and livers in diabetic rats, the lipid peroxides increased but alpha-tocopherol decreased.
Anna Davies (377353)   +5 more
core   +5 more sources

Antioxidant activity of thyme waste extract in O/W emulsions [PDF]

open access: yes, 2019
Thymus vulgaris (thyme) is an aromatic plant and its essential oil has been applied as antimicrobial and antioxidant due to the presence of phenolic compounds.
AAZZA, Smail   +8 more
core   +1 more source

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