Results 91 to 100 of about 21,852 (266)

Probing the mechanism of electron capture and electron transfer dissociation using tags with variable electron affinity [PDF]

, 2009
Electron capture dissociation (ECD) and electron transfer dissociation (ETD) of doubly protonated electron affinity (EA)-tuned peptides were studied to further illuminate the mechanism of these processes. The model peptide FQpSEEQQQTEDELQDK, containing a
Beauchamp, J. L., Chung, Cheol K., Loo, Joseph A., Ramachandran, Prasanna, Sohn, Chang Ho, Yin, Sheng   +5 more
core   +2 more sources

Synthesis, characterization, biological evaluation and molecular docking studies of 2-(1H-benzo[d]imidazol-2-ylthio)-N-(substituted 4-oxothiazolidin-3-yl) acetamides

Chemistry Central Journal, 2017
BackgroundA series of 2-(1H-benzo[d]imidazol-2-ylthio)-N-(substituted 4-oxothiazolidin-3-yl) acetamides was synthesized and characterized by physicochemical and spectral means.
Snehlata Yadav, B. Narasimhan, S. Lim, K. Ramasamy, M. Vasudevan, S. A. Shah, Manikandan Selvaraj   +6 more
semanticscholar   +1 more source

Vanillin production from lignin depolymerization by acidic deep eutectic solvent and its possible mechanism

Environmental Progress &Sustainable Energy, EarlyView.
Abstract As one of the most abundant renewable resources and complex aromatic polymers, lignin holds great promise for producing monophenolic compounds. However, its depolymerization into valuable monomers is hindered by intricate side reactions. In this study, alkaline lignin was converted into vanillin using nine choline chloride‐based deep eutectic ...
Xiaoyan Chen, Xiaohui Pan, Dongyang Cui
wiley   +1 more source

Structural relaxation in the hydrogen-bonding liquids N-methylacetamide and water studied by optical Kerr-effect spectroscopy

, 2008
Structural relaxation in the peptide model N-methylacetamide (NMA) is studied experimentally by ultrafast optical Kerr-effect spectroscopy over the normal-liquid temperature range and compared to the relaxation measured in water at room temperature.
Berne B. J., David A. Turton, Klaas Wynne, Riddick J. A.   +3 more
core   +1 more source

Photochemical Electrocyclic Ring Closure and Leaving Group Expulsion from N-(9-oxothioxanthenyl)Benzothiophene Carboxamides [PDF]

, 2013
N-(9-Oxothioxanthenyl)benzothiophene carboxamides bearing leaving groups (LG− = Cl−, PhS−, HS−, PhCH2S−) at the C-3 position of the benzothiophene ring system photochemically cyclize with nearly quantitative release of the leaving group, LG−.
Sarker, Majher I., Shahrin, Tasnuva, Steinmetz, Mark G., Timerghazin, Qadir K.   +3 more
core   +3 more sources

Evaluation of Acephate Metabolites Generated by Zebrafish (Danio rerio) Using LC–HRMS and Metabolomics Approach

Journal of Applied Toxicology, EarlyView.
ABSTRACT Acephate is an organophosphate insecticide widely used. This pesticide can be metabolized into methamidophos, a molecule highly toxic. Both have demonstrated the ability to promote serious toxic effects on nontarget organisms and have been identified in surface waters around the world. Therefore, it is important to understand their behavior in
Mariana Laiz Silva de Lima, Lucas Rodrigues Cunha, Karina Taciana Santos Rubio, Maria Elvira Poleti Martucci   +3 more
wiley   +1 more source

Design and synthesis of some novel 2-(3-methyl-2-oxoquinoxalin-1(2H)-yl)-N-(4-(substituted)phenyl)acetamide derivatives for biological evaluation as anticonvulsant agents

Bulletin of Faculty of Pharmacy Cairo University, 2013
A new series of 2-(3-methyl-2-oxoquinoxalin-1(2H)-yl)-N-(4-substitutedphenyl)acetamides (2–15a–c) were designed and synthesized in order to evaluate their anticonvulsant activity.
Mohamed-Kamal Ibrahim, Ashraf A. Abd-Elrahman, Rezk R.A. Ayyad, Khaled El-Adl, Ahmed M. Mansour, Ibrahim H. Eissa   +5 more
doaj   +1 more source

Spectroscopic and Theoretical Studies of Some 3-(4 '-Substituted phenylsulfanyl)-1-methyl-2-piperidones [PDF]

, 2013
The analysis of the IR carbonyl bands of some 3-(4 '-substituted phenylsulfanyl)1- methyl-2-piperidones 1-6 bearing substituents: NO2 (compound 1), Br (compound 2), Cl (compound 3), H (compound 4) Me (compound 5) and OMe (compound 6) supported by B3LYP ...
Bruna Contieri, Carlos R. Cerqueira, Daniel N. S. Rodrigues, Elisângela Vinhato, Jean M. M. Santos, Jr, Julio Zukerman-Schpector, Maurizio Dal Colle, Paulo R. Olivato   +8 more
core   +2 more sources

Pd-catalyzed asymmetric allylic substitution cascade using α-(pyridin-1-yl)-acetamides formed in situ as nucleophiles

Chemical Science, 2018
A Pd-catalyzed asymmetric allylic substitution cascade reaction, using α-(pyridin-1-yl)-acetamides (formed in situ) as nucleophiles, has been developed.
Kun Yao, Qianjia Yuan, Xingxin Qu, Yangang Liu, Delong Liu, Wanbin Zhang   +5 more
semanticscholar   +1 more source

Effect of Epigallocatechin‐3‐Gallate on Depression‐Related Cytokines in Thalassemia Patients: Molecular and Cellular Evaluation

Journal of Clinical Laboratory Analysis, EarlyView.
This study investigates the effects of Epigallocatechin‐3‐Gallate (EGCG), a potent anti‐inflammatory polyphenol isolated from Winged Marigold, on cytokine expression linked to depression in β‐thalassemia patients. EGCG demonstrated dose‐dependent suppression of key inflammatory cytokines (IL‐6, IL‐1β, TNF‐α, IFN‐γ) at both gene and protein levels ...
Mohammed N. Salman, Fouad Razzaq Al‐Burki, Hazim Ali Hussein, Laith A. Younus, Fadhil A. Nasser, Hasanain A. A. Almohseni   +5 more
wiley   +1 more source