Results 101 to 110 of about 43,957 (340)

Precise through-space control of an abiotic electrophilic aromatic substitution reaction

open access: yesNature Communications, 2017
Regioselectivity during electrophilic aromatic substitution is typically controlled by substituents on the aryl group. Here the authors report an electrophilic aromatic substitution reaction, wherein remote chiral ester groups direct the electrophile to ...
Kyle E. Murphy   +6 more
doaj   +1 more source

Synthesis and Quantitative Structure–Activity Relationship of Imidazotetrazine Prodrugs with Activity Independent of O6-Methylguanine-DNA-methyltransferase, DNA Mismatch Repair and p53. [PDF]

open access: yes, 2013
The antitumor prodrug Temozolomide is compromised by its dependence for activity on DNA mismatch repair (MMR) and the repair of the chemosensitive DNA lesion, O6-methylguanine (O6-MeG), by O6-methylguanine-DNA-methyltransferase (EC 2.1.1.63, MGMT). Tumor
Arris C. E.   +42 more
core   +1 more source

N2H4 as traceless mediator for homo- and cross- aryl coupling

open access: yesNature Communications, 2018
Synthesis of biaryls by coupling strategies is unavoidably accompanied by stoichiometric metal waste. Here, the authors report the homo- and cross-electrophile coupling by using hydrazine as metal surrogate, only liberating N2 and H2 as side products.
Leiyang Lv   +4 more
doaj   +1 more source

Quantitative determination of the nucleophilicity of allylsilanes [PDF]

open access: yes, 1989
Kinetic investigations on the reactivity of allylsilanes (1a–o) towards the p-methoxy substituted diphenylcarbenium ion (2) are ...
Hagen, Gisela, Mayr, Herbert
core   +1 more source

An Improved Process for the Preparation of an ?,?-Difluorosulfonylisoxazoline Herbicide

open access: yesCHIMIA, 2014
An efficient synthesis of a difluorosulfone-containing herbicide has been achieved by selective reductive silylation of a symmetrical bis(trifluoromethyl)-1,2,3-triazole.
Chantal Belie   +15 more
doaj   +1 more source

Electrophilicity Equalization Principle

open access: yes, 2010
A new electronic structure principle, viz., the principle of electrophilicity equalization is proposed. An analytical justification as well as a numerical support for the same is provided.Comment: 9 pages, 2 ...
Chattaraj, Pratim Kumar   +2 more
core   +1 more source

Vimentin disruption by lipoxidation and electrophiles: Role of the cysteine residue and filament dynamics

open access: yesRedox Biology, 2019
The intermediate filament protein vimentin constitutes a critical sensor for electrophilic and oxidative stress, which induce extensive reorganization of the vimentin cytoskeletal network.
Andreia Mónico   +3 more
doaj   +1 more source

Redox control of multidrug resistance and Its possible modulation by antioxidants [PDF]

open access: yes, 2016
Clinical efficacy of anticancer chemotherapies is dramatically hampered by multidrug resistance (MDR) dependent on inherited traits, acquired defence against toxins, and adaptive mechanisms mounting in tumours.
Cort, A.   +4 more
core   +3 more sources

Crystal Structure of the Chloroplastic Oxoene Reductase ceQORH from Arabidopsis thaliana

open access: yesFrontiers in Plant Science, 2017
Enzymatic and non-enzymatic peroxidation of polyunsaturated fatty acids give rise to accumulation of aldehydes, ketones, and α,β-unsaturated carbonyls of various lengths, known as oxylipins.
Sarah Mas y mas   +5 more
doaj   +1 more source

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