triazines

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显示 1-30 共 2549 条结果关于 "triazines" 范围论文

Chromatographic methods for analysis of triazine herbicides.

Hana Hassan Abbas et al.

Critical reviews in analytical chemistry, 45(3), 226-240 (2015-04-08)

Gas chromatography (GC) and high-performance liquid chromatography (HPLC) coupled to different detectors, and in combination with different sample extraction methods, are most widely used for analysis of triazine herbicides in different environmental samples. Nowadays, many variations and modifications of extraction

Double water compatible molecularly imprinted polymers applied as solid-phase extraction sorbent for selective preconcentration and determination of triazines in complicated water samples.

Shoufang Xu et al.

Journal of chromatography. A, 1350, 23-29 (2014-06-01)

In the present work, double water compatible molecularly imprinted polymers (DWC-MIPs) with water compatible core and hydrophilic polymer brushes were prepared by reversible addition-fragmentation chain transfer precipitate polymerization (RAFTPP) and applied as solid-phase extraction (SPE) sorbent for selective preconcentration and

Anticoccidial activity of novel triazine compounds in broiler chickens.

Min Zhang et al.

Veterinary parasitology, 267, 4-8 (2019-03-18)

The objective of present studies was to evaluate and compare the anticoccidial activity of triazine compounds in broiler chickens infected with E. tenella, E. necatrix, E. acervulina, E. maxima, and two field mixed Eimeria species. The anticoccidial efficacy was evaluated

Optimization and application of QuEChERS and SPE methods followed by LC-PDA for the determination of triazines residues in fruits and vegetables from Pietermaritzburg local supermarkets.

H M Mnyandu et al.

Food chemistry, 360, 129818-129818 (2021-05-09)

QuEChERS and solid phase extraction (SPE) methods were optimized and applied for the extraction of triazines in fruit and vegetables. These extraction methods are easy, effective, rugged and safe. Also, they have the ability to purify the extracts which leads

Determination of trace levels of triazines in corn matrices by bar adsorptive microextraction with a molecularly imprinted polymer.

Felipe Nascimento Andrade et al.

Journal of separation science, 39(4), 756-761 (2015-12-04)

This manuscript addresses the determination of triazines (ametryn, atrazine, simazine, and terbutryn) in corn matrices using bar adsorptive microextraction coated with a selective molecularly imprinted polymer phase following microliquid desorption and high-performance liquid chromatography with diode array detection. The molecularly

Integrated photocatalytic-biological treatment of triazine-containing pollutants.

Cho Yin Chan et al.

Chemosphere, 222, 371-380 (2019-02-04)

The degradation of triazine-containing pollutants including simazine, Irgarol® 1051 and Reactive Brilliant Red K-2G (K-2G) by photocatalytic treatment was investigated. The effects of titanium dioxide (TiO2) concentration, initial pH of reaction mixture, irradiation time and ultraviolet (UV) intensity on photocatalytic

Design, Synthesis and Biological Evaluation of 1,3,5-Triazine Derivatives Targeting hA1 and hA3 Adenosine Receptor.

Sujin Park et al.

Molecules (Basel, Switzerland), 27(13) (2022-07-10)

Adenosine mediates various physiological activities in the body. Adenosine receptors (ARs) are widely expressed in tumors and the tumor microenvironment (TME), and they induce tumor proliferation and suppress immune cell function. There are four types of human adenosine receptor (hARs):

1,3,5-Triazine Nitrogen Mustards with Different Peptide Group as Innovative Candidates for AChE and BACE1 Inhibitors.

Dawid Maliszewski et al.

Molecules (Basel, Switzerland), 26(13) (2021-07-03)

A series of new analogs of nitrogen mustards (4a-4h) containing the 1,3,5-triazine ring substituted with dipeptide residue were synthesized and evaluated for the inhibition of both acetylcholinesterase (AChE) and β-secretase (BACE1) enzymes. The AChE inhibitory activity studies were carried out

Spatial and Temporal Distribution Characteristics of Triazine Herbicides in Typical Agricultural Regions of Liaoning, China.

Xiaochun Wang et al.

Bulletin of environmental contamination and toxicology, 105(6), 899-905 (2020-11-21)

The aim of the current study was to track the composition, spatial and temporal distribution charactistics of triazine herbicides in arable soils and corns in typical agricultural regions of Liaoning Province, China. All samples were analyzed using high performance liquid

Fused Heterocyclic Systems with an s-Triazine Ring. 34. Development of a Practical Approach for the Synthesis of 5-Aza-isoguanines.

Ahmad Junaid et al.

Molecules (Basel, Switzerland), 24(8) (2019-04-25)

Purine isosteres present excellent opportunities in drug design and development. Using isosteres of natural purines as scaffolds for the construction of new therapeutic agents has been a valid strategy of medicinal chemistry. Inspired by the similarity to isoguanine, we attempted

Molecularly imprinted polymers combined with membrane-protected solid-phase extraction to detect triazines in tea samples.

Tianyu Zhou et al.

Analytical and bioanalytical chemistry, 410(21), 5173-5181 (2018-06-27)

Spherical molecularly imprinted polymers (MIPs) were prepared by emulsion polymerization. The isothermal adsorption and selective adsorption indicated that the MIPs obtained exhibit excellent specific recognition for the template (atrazine) and its analogues. The MIPs were encapsulated in a polypropylene microporous

Determination of Triazine Herbicides in Drinking Water by Dispersive Micro Solid Phase Extraction with Ultrahigh-Performance Liquid Chromatography-High-Resolution Mass Spectrometric Detection.

Dawei Chen et al.

Journal of agricultural and food chemistry, 63(44), 9855-9862 (2015-10-22)

A novel dispersive micro solid phase extraction (DMSPE) method based on a polymer cation exchange material (PCX) was applied to the simultaneous determination of the 30 triazine herbicides in drinking water with ultrahigh-performance liquid chromatography-high-resolution mass spectrometric detection. Drinking water

Molecularly imprinted polymer monolith containing magnetic nanoparticles for the stir-bar sorptive extraction of triazines from environmental soil samples.

Myriam Díaz-Álvarez et al.

Journal of chromatography. A, 1469, 1-7 (2016-09-30)

In this work, novel molecularly imprinted stir-bars based upon the entrapment of modified magnetic nanoparticles within an imprinted polymer monolith is developed for stir-bar sorptive extraction (SBSE). Firstly, magnetic nanoparticles were surface modified with oleic acid followed by encapsulation inside

Tris-biphenyl triazine, a new ultraviolet filter studied in terms of photoprotective efficacy.

C Couteau et al.

International journal of pharmaceutics, 487(1-2), 120-123 (2015-04-07)

There are relatively few authorized ultraviolet filters in Europe and this presents a certain number of problems when we want to formulate a sun protection product which both ensures a high level of protection and respects the recommendations in force

Stir fabric phase sorptive extraction for the determination of triazine herbicides in environmental waters by liquid chromatography.

Mercedes Roldán-Pijuán et al.

Journal of chromatography. A, 1376, 35-45 (2014-12-24)

Stir fabric phase sorptive extraction (SFPSE), which integrates sol-gel hybrid organic-inorganic coated fabric phase sorptive extraction media with a magnetic stirring mechanism, is presented for the first time. Two flexible fabric substrates, cellulose and polyester were used as the host

Discovery of triazines as selective PDE4B versus PDE4D inhibitors.

Timothy J Hagen et al.

Bioorganic & medicinal chemistry letters, 24(16), 4031-4034 (2014-07-08)

In this study we report a series of triazine derivatives that are potent inhibitors of PDE4B. We also provide a series of structure activity relationships that demonstrate the triazine core can be used to generate subtype selective inhibitors of PDE4B

In tube-solid phase microextraction-nano liquid chromatography: Application to the determination of intact and degraded polar triazines in waters and recovered struvite.

P Serra-Mora et al.

Journal of chromatography. A, 1513, 51-58 (2017-07-30)

In-tube solid-phase microextraction (IT-SPME) coupled to miniaturized liquid chromatography (LC) techniques are attractive mainly due to the column efficiency improvement, sensitivity enhancement and reduction of solvent consumption. In addition, the nanomaterials based sorbents can play a key role in the

Supported liquid membrane-protected molecularly imprinted beads for the solid phase micro-extraction of triazines from environmental waters.

E Turiel et al.

Journal of chromatography. A, 1432, 1-6 (2016-01-19)

In this work, a novel methodology based on the combination of MIP technology with micro solid-phase extraction in a hollow fibre device for the trace enrichment and cleanup of triazines in environmental waters is described. All parameters affecting both migration

Ligand binding studies, preliminary structure-activity relationship and detailed mechanistic characterization of 1-phenyl-6,6-dimethyl-1,3,5-triazine-2,4-diamine derivatives as inhibitors of Escherichia coli dihydrofolate reductase.

Bharath Srinivasan et al.

European journal of medicinal chemistry, 103, 600-614 (2015-09-29)

Gram-negative bacteria are implicated in the causation of life-threatening hospital-acquired infections. They acquire rapid resistance to multiple drugs and available antibiotics. Hence, there is the need to discover new antibacterial agents with novel scaffolds. For the first time, this study

o-Carboranylalkoxy-1,3,5-Triazine Derivatives: Synthesis, Characterization, X-ray Structural Studies, and Biological Activity.

Guo Fan Jin et al.

Molecules (Basel, Switzerland), 23(9) (2018-09-12)

Morpholine- and bis(2-methoxyethyl)amine-substituted 1,3,5-triazine derivatives containing an alkoxy-o-carborane in the 6-position of the triazine ring were successfully synthesized. The molecular structures of the methoxy- and ethoxy-o-carboranyl-1,3,5-triazines were established by X-ray crystallography. In vitro studies showed that the methylene bridged morpholine-

Exploration of novel heterofused 1,2,4-triazine derivative in colorectal cancer.

Justyna Magdalena Hermanowicz et al.

Journal of enzyme inhibition and medicinal chemistry, 36(1), 535-548 (2021-02-02)

Colorectal cancer (CRC) is the third leading cause of cancer-related deaths in men and in women. The impact of the new pyrazolo[4,3-e]tetrazolo[1,5-b][1,2,4]triazine sulphonamide (MM-129) was evaluated against human colon cancer in vitro and in zebrafish xenografts. Our results show that this

In silico study, synthesis, and evaluation of the antimalarial activity of hybrid dimethoxy pyrazole 1,3,5-triazine derivatives.

Pinku Gogoi et al.

Journal of biochemical and molecular toxicology, 35(3), e22682-e22682 (2020-12-18)

Malaria continues to become a major global health problem, particularly in Sub-Saharan Africa, Asia, and Latin America. The widespread emergence of resistance to first-line drugs has further bolstered an urgent need for a new and cost-effective antimalarial(s). Thus, the present

Glass slides functionalized by 1-carboxyethyl-3-methylimidazolium chloride for the determination of triazine herbicides in rice using high-performance liquid chromatography.

Xinpei Li et al.

Journal of separation science, 39(23), 4585-4591 (2016-11-01)

A novel and simple supported ionic-liquid-based solid-phase extraction method for the determination of triazine herbicides in rice was developed. Glass slides were functionalized by an ionic liquid, 1-carboxyethyl-3-methylimidazolium chloride, and were used for the simultaneous extraction of seven triazine herbicides

Bifunctionalized ordered mesoporous organosilica synthesized in deep eutectic solvent for extraction of triazine herbicides from watermelon.

Zan Li et al.

Journal of chromatography. A, 1529, 50-56 (2017-11-15)

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Aqueous two-phase extraction for determination of triazine herbicides in milk by high-performance liquid chromatography.

Xiao Yang et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 972, 111-116 (2014-12-03)

A simple extraction method based on acetonitrile-K2HPO4 aqueous two-phase system was developed for separation and enrichment of five triazines in milk samples. Acetonitrile was used for extraction of analytes from milk sample and precipitation of milk protein. Deproteinization and extraction

Design, Synthesis, and Biological Evaluation of 6-(2-Amino-substituted phenyl)-4-(substituted phenyl)-1,2,4-triazine-3,5(2H,4H)-dione Derivatives as Anticonvulsant Agents.

Ahsan Ahmed Khan et al.

Archiv der Pharmazie, 349(4), 277-292 (2016-03-22)

As per structural requirement essential for anticonvulsant activity, a series of new 6-(2-amino-substituted phenyl)-4-(substituted phenyl)-1,2,4-triazine-3,5-dione derivatives were designed and synthesized. All the synthesized title derivatives were assessed for in vivo anticonvulsant screening by the two most employed standard animal seizure

Investigating triazine-based modification of hyaluronan using statistical designs.

Jue Liang et al.

Carbohydrate polymers, 132, 472-480 (2015-08-11)

Hyaluronan (HA) and its derivatives have been extensively researched for many biomedical applications. To precisely tailor the property of HA by derivatizing it to a pre-determined extent is challenging, yet critical. In this paper, we used 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) and N-methylmorpholine

Investigations into the Biosynthesis, Regulation, and Self-Resistance of Toxoflavin in Pseudomonas protegens Pf-5.

Benjamin Philmus et al.

Chembiochem : a European journal of chemical biology, 16(12), 1782-1790 (2015-06-17)

Pseudomonas spp. are prolific producers of natural products from many structural classes. Here we show that the soil bacterium Pseudomonas protegens Pf-5 is capable of producing trace levels of the triazine natural product toxoflavin (1) under microaerobic conditions. We evaluated

Sulphonamides incorporating 1,3,5-triazine structural motifs show antioxidant, acetylcholinesterase, butyrylcholinesterase, and tyrosinase inhibitory profile.

Nabih Lolak et al.

Journal of enzyme inhibition and medicinal chemistry, 35(1), 424-431 (2020-01-05)

A series of 16 novel benzenesulfonamides incorporating 1,3,5-triazine moieties substituted with aromatic amines, dimethylamine, morpholine and piperidine were investigated. These compounds were assayed for antioxidant properties by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay, 2,2`-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical decolarisation assay and

On-line concentration of triazine herbicides in microemulsion electrokinetic chromatography by electrokinetic injection assisted micelle to cyclodextrin stacking.

Xiao-Ting Zhen et al.

Journal of chromatography. A, 1628, 461438-461438 (2020-08-22)

A fast, simple, environmentally friendly and sensitive on-line concentration method using microemulsion system as background solution (BGS) was developed for the trace detection of propazine, atrazine, simazine in food samples. The electrokinetic injection assisted micelle to cyclodextrin stacking (MCDS) was

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