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Methyl chloride

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https://www.readbyqxmd.com/read/28219707/22-azidosalvinorin-a-exhibits-antidepressant-like-effect-in-mice
#1
James Oluwagbamigbe Fajemiroye, Polepally Reddy Prabhakar, Carlos Luiz da Cunha, Elson Alves Costa, Jordan K Zjawiony
The increasing cases of depression has made the searches for new drugs and understanding of the underligning neurobiology of this psychiatric disorder a necessity. Here, we modified the structure of salvinorin A (a known halucinogen) and investigated antidepressant-like activity of its four derivatives; 22-methylsulfanylsalvinorin A(SA1), 2-O-cinnamoylsalvinorin B (CSB), 22-azidosalvinorin A (SA2), and 2-O-(4(')-azidophenylsulfonyl)salvinorin B (SA3). Prior to behavioural tests (Irwin test, open field test - OFT, forced swimming test - FST and tail suspension test - TST), SA1 was prepared by reacting salvinorin B and methylthioacetic acid with 89% yield; CSB was obtained from the reaction of salvinorin B and cinnamic acid with 92% yield; SA2 was obtained from the reaction of salvinorin B and azidoacetic acid with 81% yield; and SA3 was prepared by reacting salvinorin B with 4-azidophenylsulfonyl chloride with 80% yield...
February 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28195740/the-conversion-of-tert-butyl-esters-to-acid-chlorides-using-thionyl-chloride
#2
Jacob Arthur Greenberg, Tarek Sammakia
The reaction of tert-butyl esters with SOCl2 at room temperature provides acid chlorides in unpurified yields of 89% or greater. Benzyl, methyl, ethyl, and isopropyl esters are essentially unreactive under these conditions, allowing for the selective conversion of tert-butyl esters to acid chlorides in the presence of other esters.
February 14, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28194311/tracking-the-virus-like-particles-of-macrobrachium-rosenbergii-nodavirus-in-insect-cells
#3
Ummi Fairuz Hanapi, Chean Yeah Yong, Zee Hong Goh, Noorjahan Banu Alitheen, Swee Keong Yeap, Wen Siang Tan
Macrobrachium rosenbergii nodavirus (MrNv) poses a major threat to the prawn industry. Currently, no effective vaccine and treatment are available to prevent the spread of MrNv. Its infection mechanism and localisation in a host cell are also not well characterised. The MrNv capsid protein (MrNvc) produced in Escherichia coli self-assembled into virus-like particles (VLPs) resembling the native virus. Thus, fluorescein labelled MrNvc VLPs were employed as a model to study the virus entry and localisation in Spodoptera frugiperda, Sf9 cells...
2017: PeerJ
https://www.readbyqxmd.com/read/28179028/betanodavirus-like-particles-enter-host-cells-via-clathrin-mediated-endocytosis-in-a-cholesterol-ph-and-cytoskeleton-dependent-manner
#4
Runqing Huang, Guohua Zhu, Jing Zhang, Yuxiong Lai, Yu Xu, Jianguo He, Junfeng Xie
Betanodavirus, also referred to nervous necrosis virus (NNV), is the causative agent of the fatal disease, viral nervous necrosis and has brought significant economic losses in marine and freshwater cultured fish, especially larvae and juveniles. Here, we used an established invasion model with virus-like particle (VLP)-cells, mimicking orange-spotted grouper nervous necrosis virus (OGNNV), to investigate the crucial events of virus entry. VLP were observed in the perinuclear regions of Asian sea bass (SB) cells within 1...
February 8, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28161542/vasorelaxation-effect-of-glycyrrhizae-uralensis-through-the-endothelium-dependent-pathway
#5
Chu Shan Tan, Yung Sing Ch'ng, Yean Chun Loh, Mohd Zaini Asmawi, Mariam Ahmad, Mun Fei Yam
ETHNOPHARMACOLOGICAL RELEVANCE: Glycyrrhiza uralensis (G. uralensis) is one of the herbs used in traditional Chinese medicine (TCM) and serves as an envoy medicinal. Since G. uralensis plays a major role in the anti-hypertensive TCM formulae, we believe that G. uralensis might possess vasorelaxation activity. AIM OF THE STUDY: This study is designed to investigate the vasorelaxation effect of G. uralensis from various extracts and to study its pharmacology effect...
February 1, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28152052/choline-and-methionine-differentially-alter-methyl-carbon-metabolism-in-bovine-neonatal-hepatocytes
#6
Tawny L Chandler, Heather M White
Intersections in hepatic methyl group metabolism pathways highlights potential competition or compensation of methyl donors. The objective of this experiment was to examine the expression of genes related to methyl group transfer and lipid metabolism in response to increasing concentrations of choline chloride (CC) and DL-methionine (DLM) in primary neonatal hepatocytes that were or were not exposed to fatty acids (FA). Primary hepatocytes isolated from 4 neonatal Holstein calves were maintained as monolayer cultures for 24 h before treatment with CC (61, 128, 2028, and 4528 μmol/L) and DLM (16, 30, 100, 300 μmol/L), with or without a 1 mmol/L FA cocktail in a factorial arrangement...
2017: PloS One
https://www.readbyqxmd.com/read/28150586/novel-seleno-hydantoin-palladium-ii-complex-antimigratory-cytotoxic-and-prooxidative-potential-on-human-colon-hct-116-and-breast-mda-mb-231-cancer-cells
#7
Marko N Živanović, Jelena V Košarić, Biljana Šmit, Dragana S Šeklić, Radoslav Z Pavlović, Snežana D Marković
Selenium and palladium containing compounds separately exert multifunctional effects on cells. While selenium containing compounds usually exert antioxidative properties, palladium(II) containing compounds are cytotoxic and prooxidative. Here we investigated biological effects of bicyclic seleno-hydantoin cis-7a-ethyl-5-methyl-5-phenylselanylmethyl-tetrahydro-pyrrolo[1,2-c]imidazole-1,3-dione (Hid-Se), and its palladium(II) complex, trans-bis-(cis-7a-ethyl-5-methyl-5-phenylselanylmethyl-tetrahydro-pyrrolo[1,2-c]imidazole-1,3-dionato) palladium(II) chloride ((Hid-Se)2Pd) on human colon HCT-116 and breast MDA-MB-231 cancer cell lines...
February 2, 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/28127094/efficient-preparation-of-2-nitroimidazole-nucleosides-as-precursors-for-hypoxia-pet-tracers
#8
Petra Križková, Anna Wieczorek, Friedrich Hammerschmidt
ABSTRACT: 2-Deoxy-D-ribose was converted to α/β-mixtures of methyl 3-O-acetyl- and methyl 3-O-benzoyl-2-deoxy-5-(p-toluenesulfonyl)-D-ribofuranosides. These were reacted with boron trichloride to generate ribofuranosyl chlorides, which afforded precursors for tracers to image tumor hypoxia on substitution with salts of 2-nitroimidazole. The anomeric ratio of the nucleosides was delicately influenced by the reaction conditions. GRAPHICAL ABSTRACT: HASH(0x5872940) ...
2017: Monatshefte Für Chemie
https://www.readbyqxmd.com/read/28125813/signal-transduction-underlying-the-inhibitory-mechanism-of-fluoxetine-on-electrical-field-stimulation-response-in-rat-ileal-smooth-muscle
#9
Phyu Phyu Khin, Tin Sandar Zaw, Uy Dong Sohn
Fluoxetine (FLX), a well-known antidepressant drug under the class of selective serotonin reuptake inhibitor, exerts its action by inhibiting the reuptake of serotonin selectively. In some studies, it has been demonstrated that FLX relaxes the intestinal smooth muscle. In this study, we aimed at studying the signal transduction pathway underlying the muscle relaxation effect of FLX on electrically stimulated rat ileal muscle contraction. To investigate the possible mechanism involved, various antagonists were used...
January 27, 2017: Pharmacology
https://www.readbyqxmd.com/read/28119025/synthesis-of-carbon-11-labeled-isonicotinamides-as-new-potential-pet-agents-for-imaging-of-gsk-3-enzyme-in-alzheimer-s-disease
#10
Mingzhang Gao, Min Wang, Qi-Huang Zheng
The authentic standards 2-(cyclopropanecarboxamido)-N-(4-methoxypyridin-3-yl)isonicotinamide (4a) and 2-(cyclopropanecarboxamido)-N-(4-(4-methoxyphenyl)pyridin-3-yl)isonicotinamide (7a), and their corresponding precursors 2-(cyclopropanecarboxamido)-N-(4-hydroxypyridin-3-yl)isonicotinamide (4b) and 2-(cyclopropanecarboxamido)-N-(4-(4-hydroxyphenyl)pyridin-3-yl)isonicotinamide (7b) were synthesized from methyl 2-aminoisonicotinate and cyclopropanecarbonyl chloride with overall chemical yield 47% in three steps, 22% in four steps, 40% in three steps, and 17% in four steps, respectively...
January 16, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28100082/synthesis-and-bioactivity-of-several-new-hetaryl-sulfonamides
#11
Parham Taslimi, Afsun Sujayev, Sevgi Mamedova, Pınar Kalın, İlhami Gulçin, Nastaran Sadeghian, Sukru Beydemir, O Irfan Kufrevioglu, Saleh H Alwasel, Vagif Farzaliyev, Sabir Mamedov
1-(4-Methylsulfonyl)-2-thione-4-aryl-5-Z-6-methyl and oxyalkyl-imidazoles were synthesized from different tetrahydropyrimidinethiones and aryl sulfonyl chloride. These compunds were tested for metal chelating effects and to determine the phrase in which inhibition occured between two physiologically pertinent compunds and carbonic anhydrase (CA) isozymes I and II (hCA I and II), butyrylcholinesterase (BChE) and acetylcholinesterase (AChE). AChE was detected in high concentrations in the brain and red blood cells...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28071904/new-insight-into-the-formation-mechanism-of-imidazolium-based-ionic-liquids-from-n-alkyl-imidazoles-and-halogenated-hydrocarbons-a-polar-microenvironment-induced-and-autopromoted-process
#12
Xueli Mu, Nan Jiang, Chengbu Liu, Dongju Zhang
To illustrate the formation mechanism of imidazolium-based ionic liquids (ILs) from N-alkyl imidazoles and halogenated hydrocarbons, density functional theory calculations have been carried out on a representative system, the reaction of N-methyl imidazole with chloroethane to form 1-ethyl-3-methyl imidazolium chloride ([Emim]Cl) IL. The reaction is shown to proceed via an SN2 transition state with a free energy barrier of 34.4 kcal/mol in the gas phase and 27.6 kcal/mol in toluene solvent. The reaction can be remarkably promoted by the presence of ionic products and water molecules...
February 9, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28070178/palladium-catalyzed-%C3%AE-arylation-of-methyl-sulfonamides-with-aryl-chlorides
#13
Bing Zheng, Minyan Li, Gui Gao, Yuying He, Patrick J Walsh
A Palladium-catalyzed α-arylation of sulfonamides with aryl chlorides is presented. A Buchwald type precatalyst formed with Kwong's indole-based ligand enabled this transformation to be compatible with a large variety of methyl sulfonamides and aryl chlorides in good to excellent yields. Importantly, under the optimized reaction conditions, only mono-arylated products were observed. This method has been applied to the efficient synthesis of sumatriptan, which is used to treat migraines.
June 30, 2016: Advanced Synthesis & Catalysis
https://www.readbyqxmd.com/read/28068108/transferability-and-adhesion-of-sol-gel-derived-crystalline-tio2-thin-films-to-different-types-of-plastic-substrates
#14
Natsumi Amano, Mitsuru Takahashi, Hiroaki Uchiyama, Hiromitsu Kozuka
Anatase thin films were prepared on various plastic substrates by our recently developed sol-gel transfer technique. Polycarbonate (PC), poly(methyl methacrylate) (PMMA), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyether ether ketone (PEEK), and polyvinylidene chloride (PVDC) were employed as plastic substrates. A Si(100) substrate was first coated with a polyimide (PI)/polyvinylpyrrolidone (PVP) mixture layer, and an alkoxide-derived titania gel film was deposited on it by spin-coating...
January 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28067653/photocatalytic-degradation-of-methyl-orange-methylene-blue-and-rhodamine-b-with-agcl-nanocatalyst-synthesised-from-its-bulk-material-in-the-ionic-liquid-p6-6-6-14-cl
#15
Borja Rodríguez-Cabo, Iago Rodríguez-Palmeiro, Raquel Corchero, Rosario Rodil, Eva Rodil, Alberto Arce, Ana Soto
The photocatalytic degradation of wastewater containing three industrial dyes belonging to different families, methyl orange (MO), methylene blue (MB) and Rhodamine B (RhB), was studied under UV-Vis irradiation using synthesised silver chloride nanoparticles. The nanocatalyst was prepared by a dissolution/reprecipitation method starting from the bulk powder and the ionic liquid trihexyl(tetradecyl)phosphonium chloride, [P6 6 6 14]Cl, without addition of other solvents. The obtained catalyst was characterised by UV-Vis absorbance, X-ray powder diffraction, transmission electron microscopy and scanning electron microscopy...
January 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28060829/enhancement-of-dose-response-and-nuclear-magnetic-resonance-image-of-pagat-polymer-gel-dosimeter-by-adding-silver-nanoparticles
#16
Rahim Sabbaghizadeh, Roslinda Shamsudin, Najmeh Deyhimihaghighi, Arman Sedghi
In the present study, the normoxic polyacrylamide gelatin and tetrakis hydroxy methyl phosphoniun chloride (PAGAT) polymer gel dosimeters were synthesized with and without the presence of silver (Ag) nanoparticles. The amount of Ag nanoparticles varied from 1 to 3 ml with concentration 3.14 g/l, thus forming two types of PAGAT polymer gel dosimeters before irradiating them with 6 to 25 Gy produced by 1.25-MeV 60Co gamma rays. In this range, the predominant gamma ray interaction with matter is by Compton scattering effect, as the photoelectric absorption effect diminishes...
2017: PloS One
https://www.readbyqxmd.com/read/28059406/cubane-like-tetranuclear-cu-ii-complexes-bearing-a-cu4o4-core-crystal-structure-magnetic-properties-dft-calculations-and-phenoxazinone-synthase-like-activity
#17
Shipra Sagar, Swaraj Sengupta, Antonio J Mota, Shyamal K Chattopadhyay, Arturo Espinosa Ferao, Eric Riviere, William Lewis, Subhendu Naskar
In the present work, two new copper complexes 3a and 3b with a Cu4O4 cubane core are reported. Both complexes are obtained by means of the in situ conversion of the imine functionality of Schiff's base ligands 1a [(E)-4-chloro-2-((thiazol-2-ylimino)methyl)phenol] and 1b [(E)-4-bromo-2-((thiazol-2-ylimino)methyl)phenol] into amino alcohols 2a (4-chloro-2-(hydroxy(thiazol-2-ylamino)methyl)phenol) and 2b (4-bromo-2-(hydroxy(thiazol-2-ylamino)methyl)phenol), respectively. The ligand transformation may be metal assisted and the generated ligands show an interesting mode of coordination in which the alkoxo-O atom binds in a μ(3)-manner connecting simultaneously three copper centers and forming a Cu4O4 cubane core...
January 6, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28058766/synthesis-of-molecularly-imprinted-polymers-by-atom-transfer-radical-polymerization-for-the-solid-phase-extraction-of-phthalate-esters-in-edible-oil
#18
Ningning Chen, Juan He, Chaojun Wu, Yuanyuan Li, An Suo, Hongliang Wei, Lijun He, Shusheng Zhang
Novel molecularly imprinted polymers of phthalate esters were prepared by atom transfer radical polymerization using methyl methacrylate as functional monomer, cyclohexanone as solvent, cuprous chloride as catalyst, 1-chlorine-1-ethyl benzene as initiator and 2,2-bipyridyl as cross-linker in the mixture of methanol and water (1:1, v/v). The effect of reaction conditions such as monomer ratio and template on the adsorption properties was investigated. The optimum condition was obtained by an orthogonal experiment...
January 6, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28055202/somc-designed-silica-supported-tungsten-oxo-imidazolin-2-iminato-methyl-precatalyst-for-olefin-metathesis-reactions
#19
Ziyauddin S Qureshi, Ali Hamieh, Samir Barman, Niladri Maity, Manoja K Samantaray, Samy Ould-Chikh, Edy Abou-Hamad, Laura Falivene, Valerio D'Elia, Alexander Rothenberger, Isabelle Llorens, Jean-Louis Hazemann, Jean-Marie Basset
Synthesis, structure, and olefin metathesis activity of a surface complex [(≡Si-O-)W(═O)(CH3)2-Im(Dipp)N] (4) (Im(Dipp) = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-iminato) supported on silica by a surface organometallic chemistry (SOMC) approach are reported. The reaction of N-silylated 2-iminoimidazoline with tungsten(VI) oxytetrachloride generated the tungsten oxo imidazolin-2-iminato chloride complex [Im(Dipp)NW(═O)Cl3] (2). This was grafted on partially dehydroxylated silica pretreated at 700 °C (SiO2-700) to afford a well-defined monopodal surface complex [(≡Si-O-)W(═O)Cl2-Im(Dipp)N] (3)...
January 5, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28055194/nonredox-metal-ions-enhanced-dioxygen-activation-by-oxidovanadium-iv-complexes-toward-hydrogen-atom-abstraction
#20
Jisheng Zhang, Hang Yang, Tingting Sun, Zhuqi Chen, Guochuan Yin
Dioxygen activation toward efficient catalysis at ambient temperature is still a big challenge for industrial oxidations, while it proceeds smoothly in nature. This work presents an example of that adding nonredox metal ions as Lewis acid can enhance dioxygen activation by oxidovanadium(IV) complex, [V(IV)(O)Cl(TPA)]PF6 (where TPA is tris-[(2-pyridy)methyl]amine), which leads to efficient hydrogen abstraction at ambient temperature, whereas, in the absence of a Lewis acid, the catalytic hydrogen abstraction of the oxidovanadium(IV) complex is very sluggish...
January 5, 2017: Inorganic Chemistry
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