Category: chlorides-buliding-blocks

Moya, Sergio E. published the artcileExplanation for the Apparent Absence of Collapse of Polyelectrolyte Brushes in the Presence of Bulky Ions, Computed Properties of 23616-79-7, the publication is Journal of Physical Chemistry B (2007), 111(25), 7034-7040, database is CAplus and MEDLINE.

The conformational behavior of poly[2-(methacryloyloxy)ethyltrimethylammonium chloride] (PMETAC) brushes with different chain d. in the presence of large benzyltributylammonium chloride (BTBAC) ions was studied by a Quartz Crystal Microbalance with Dissipation (QCM-D) and Scanning Force Microscopy. Dense brushes do not collapse in the presence of BTBAC solutions of increasing ionic strength, contrary to what is observed in the presence of NaCl. Brush collapse can be observed for low-ionic-strength solutions of BTBAC when the brush d. was reduced. These phenomena can be explained by considering the Hofmeister series and ion size and free space in the brush.

Journal of Physical Chemistry B published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Computed Properties of 23616-79-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Devaud, Marguerite published the artcileElectrochemical reduction of 1-chloroalkylphosphonates in the presence of various electrophiles, Application of Diethyltrichloromethylphosphonate, the publication is Journal of Chemical Research, Synopses (1991), 120-1, database is CAplus.

The electroreduction of dichloromethylene bis(di-Et phosphonate) was studied in the presence of various electrophiles protons, alkyl iodides and carbonyl compounds The electroreduction of di-Et (trichloromethyl)phosphonate with and without benzaldehyde is also described.

Journal of Chemical Research, Synopses published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Application of Diethyltrichloromethylphosphonate.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Strizhak, Alexander V. published the artcileDiarylethene moiety as an enthalpy-entropy switch: photoisomerizable stapled peptides for modulating p53/MDM2 interaction, Computed Properties of 219537-97-0, the publication is Organic & Biomolecular Chemistry (2020), 18(28), 5359-5369, database is CAplus and MEDLINE.

Analogs of the known inhibitor (peptide pDI) of the p53/MDM2 protein-protein interaction are reported, which are stapled by linkers bearing a photoisomerizable diarylethene moiety. The corresponding photoisomers possess significantly different affinities to the p53-interacting domain of the human MDM2. Apparent dissociation constants are in the picomolar-to-low nanomolar range for those isomers with diarylethene in the “open” configuration, but up to eight times larger for the corresponding “closed” isomers. Spectroscopic, structural, and computational studies showed that the stapling linkers of the peptides contribute to their binding. Calorimetry revealed that the binding of the “closed” isomers is mostly enthalpy-driven, whereas the “open” photoforms bind to the protein stronger due to their increased binding entropy. The results suggest that conformational dynamics of the protein-peptide complexes may explain the differences in the thermodn. profiles of the binding.

Organic & Biomolecular Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C4Br2N2O4S, Computed Properties of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Dharman, Prabu published the artcileA facile synthesis of novel 5-substituted pyridine 2 carboxamide derivatives and their biological evaluation and 3D QSAR studies, Safety of (4-Chloro-2-fluoro-3-methoxyphenyl)boronic acid, the publication is Journal of the Chinese Chemical Society (Weinheim, Germany) (2019), 66(4), 415-426, database is CAplus.

A variety of novel 5-substituted pyridine 2 carboxamides were designed and synthesized using both normal and solvent-free microwave (MW) irradiation techniques. The results revealed that MW protocol proceeded smoothly under mild reaction conditions in short reaction times, thus avoiding the use of toxic organic solvents. Structural elucidation of the synthesized compounds was carried out on the basis of various spectroscopic methods, such as ¹H NMR, ¹³C NMR, LCMS, and IR. The synthesized compounds were evaluated for their in vitro antimicrobial activity (MIC) using the agar disk diffusion method. Among the various synthetic compounds, compound 3b showed higher potential activity against Escherichia coli than the other compounds The order of activity against E. coli of the studied compounds is 3b > 3e > 3g > 3h > 3d > 3c > 3a > 3f. Addnl., 2D and 3D structural features of the synthesized derivatives were recognized by the 3D-QSAR model. This validated model exhibited good internal (r², 0.924) and external prediction (r²pred, 0.851) correlation. The results of QSAR studies concluded that Alog P, the number of hydrogen bond acceptors, and the number of rotatable bonds were necessary features for the activity of the pyridine carboxamide derivatives

Journal of the Chinese Chemical Society (Weinheim, Germany) published new progress about 944129-07-1. 944129-07-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester,, name is (4-Chloro-2-fluoro-3-methoxyphenyl)boronic acid, and the molecular formula is C7H7BClFO3, Safety of (4-Chloro-2-fluoro-3-methoxyphenyl)boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Juhas, Martin published the artcileImproving Antimicrobial Activity and Physico-Chemical Properties by Isosteric Replacement of 2-Aminothiazole with 2-Aminooxazole, SDS of cas: 6313-54-8, the publication is Pharmaceuticals (2022), 15(5), 580, database is CAplus and MEDLINE.

Antimicrobial drug resistance is currently one of the most critical health issues. Pathogens resistant to last-resort antibiotics are increasing, and very few effective antibacterial agents have been introduced in recent years. The promising drug candidates are often discontinued in the primary stages of the drug discovery pipeline due to their unspecific reactivity (PAINS), toxicity, insufficient stability, or low water solubility In this work, we investigated a series of substituted N-oxazolyl- and N-thiazolylcarboxamides of various pyridinecarboxylic acids. Final compounds were tested against several microbial species. In general, oxazole-containing compounds showed high activity against mycobacteria, especially Mycobacterium tuberculosis (best MIC_H37Ra = 3.13 μg/mL), including the multidrug-resistant strains. Promising activities against various bacterial and fungal strains were also observed None of the compounds was significantly cytotoxic against the HepG2 cell line. Exptl. measurement of lipophilicity parameter log k′_w and water solubility (log S) confirmed significantly (typically two orders in logarithmic scale) increased hydrophilicity/water solubility of oxazole derivatives in comparison with their thiazole isosteres. Mycobacterial β-ketoacyl-acyl carrier protein synthase III (FabH) was suggested as a probable target by mol. docking and mol. dynamics simulations.

Pharmaceuticals published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C6H4ClNO2, SDS of cas: 6313-54-8.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Mahmoudi, Yaser published the artcileNew potent antifungal triazole alcohols containing N-benzylpiperazine carbodithioate moiety: Synthesis, in vitro evaluation and in silico study, Related Products of chlorides-buliding-blocks, the publication is Bioorganic Chemistry (2019), 103060, database is CAplus and MEDLINE.

A number of 1H-1,2,4-triazole alcs. containing N-(halobenzyl)piperazine carbodithioate moiety were designed and synthesized as potent antifungal agents. In vitro bioassays against different Candida species including C. albicans, C. glabrata, C. parapsilosis, C. krusei, and C. tropicalis revealed that the N-(4-chlorobenzyl) derivative(I) with MIC values of 0.063-0.5μg/mL had the best profile of activity, being 4-32-fold more potent than fluconazole. Docking simulation studies confirmed the better fitting of I deriv in the active site of lanosterol 14α-demethylase (CYP51) enzyme, the main target of azole antifungals. Particularly, the potential of I against fluconazole-resistant isolates along with its minimal toxicity against human erythrocytes and HepG2 cells make this prototype compound as a good lead for discovery of potent and safe antifungal agents.

Bioorganic Chemistry published new progress about 620-20-2. 620-20-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 3-Chlorobenzylchloride, and the molecular formula is C7H6Cl2, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Catel, Yohann published the artcileHigh refractive index monofunctional monomers as promising diluents for dental composites, Product Details of C19H34ClN, the publication is Dental Materials (2021), 37(2), 351-358, database is CAplus and MEDLINE.

To evaluate high refractive index methacrylates as diluents for the formulation of radiopaque esthetic bulk-fill composites.2-(4-Cumylphenoxy)ethyl methacrylate 1, 2-(2-phenylphenoxy)ethyl methacrylate 2 and 2-[2-(2-phenylphenoxy)ethoxy]ethyl methacrylate 3 were synthesized and characterized by ¹H NMR spectroscopy. The reactivity of each monomer was studied using photo-DSC. Bulk-fill composites based on monomers 1-3 were formulated. Translucency (before and after light cure) was measured using a spectrophotometer. The depth of cure and the water sorption of these materials were determined according to ISO 4049. The flexural strength and modulus of elasticity were measured using a three-point bending setup, according to ISO 4049. The shrinkage force was assessed based on a method described by Watts et al. using a universal testing machine.Monomers 1-3 were easily synthesized in two steps. They exhibit a low viscosity and a high refractive index (1.553-1.573). Monofunctional methacrylates 1-3 were found to be more reactive than triethylene glycol dimethacrylate (TEGDMA). Bulk-fill composites based on these monomers were successfully prepared They exhibit a high depth of cure and excellent esthetic properties (low transparency). These composites provide higher flexural modulus as well as lower water sorption than a corresponding material based on TEGDMA. Methacrylates 1 and 3 are particularly interesting as they led to composites showing lower shrinkage force.Methacrylates 1-3 are promising diluents for the formulation of highly esthetic radiopaque bulk-fill composites.

Dental Materials published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Product Details of C19H34ClN.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Jodinskiene, M. published the artcilePeculiarities of two different IAA binding sites functioning in kidney bean hypocotyl cell plasmalemma, Category: chlorides-buliding-blocks, the publication is Biologija (2007), 53(2), 44-47, database is CAplus.

Peculiarities of the interaction of phytohormone indole-3-acetic acid (IAA or auxin) and auxin-binding proteins (ABP) in the plasmalemma of kidney bean (dicot plant) hypocotyl cells according to different physiol. responses to IAA have been studied. Two different IAA binding sites (optimal pH 5.5 and 7.5) were discovered in the plasma-lemma of cells responding to IAA by elongation. The first site is characterized as IAA-receptor mediating cell response to IAA by elongation. It has a structure of the IAA binding site -/-H-R-H-S-C-E-/. This site is not functioning in hypocotyl cells not responding to IAA by elongation. The activity of the second site (optimal pH 7.5) is dependent on IAA transport. Basing on the characteristics of this site, the following suggestions may be made: one residue of histidine and amino acid(s) containing the -SH- group are functioning in this site; the IAA influx inhibitor 3-chloro-4-hydroxyphenylacetic acid (CHPAA) is capable of a very active competition with IAA in the binding site: it reduces IAA-ABP interaction by 92%. These results confirmed that several different ABP may be functioning in the cell and that for each sep. response an individual receptor may be required.

Biologija published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C8H7ClO3, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Rosch, Andrea published the artcileHow Biotransformation Influences Toxicokinetics of Azole Fungicides in the Aquatic Invertebrate Gammarus pulex, Quality Control of 67747-01-7, the publication is Environmental Science & Technology (2016), 50(13), 7175-7188, database is CAplus and MEDLINE.

Biotransformation is a key process that can greatly influence the bioaccumulation potential and toxicity of organic compounds In this study, biotransformation of seven frequently used azole fungicides (triazoles: cyproconazole, epoxiconazole, fluconazole, propiconazole, tebuconazole and imidazoles: ketoconazole, prochloraz) was investigated in the aquatic invertebrate Gammarus pulex in a 24 h exposure experiment Addnl., temporal trends of the whole body internal concentrations of epoxiconazole, prochloraz, and their resp. biotransformation products (BTPs) were studied to gain insight into toxicokinetic processes such as uptake, elimination and biotransformation. By the use of high resolution tandem mass spectrometry in total 37 BTPs were identified. Between one (ketoconazole) and six (epoxiconazole) BTPs were identified per parent compound except for prochloraz, which showed extensive biotransformation reactions with 18 BTPs detected that were mainly formed through ring cleavage or ring loss. In general, most BTPs were formed by oxidation and conjugation reactions. Ring loss or ring cleavage was only observed for the imidazoles as expected from the general mechanism of oxidative ring openings of imidazoles, likely affecting the bioactivity of these BTPs. Overall, internal concentrations of BTPs were up to 3 orders of magnitude lower than that of the corresponding parent compound Thus, biotransformation did not dominate toxicokinetics and only played a minor role in elimination of the resp. parent compound, with the exception of prochloraz.

Environmental Science & Technology published new progress about 67747-01-7. 67747-01-7 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Amine,Benzene,Ether,Benzene Compounds, name is N-(2-(2,4,6-Trichlorophenoxy)ethyl)propan-1-amine, and the molecular formula is C11H14Cl3NO, Quality Control of 67747-01-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Cozzi, Franco published the artcileThrough-space interactions between parallel-offset arenes at the van der Waals distance: 1,8-diarylbiphenylene syntheses, structure and QM computations, SDS of cas: 209919-30-2, the publication is Physical Chemistry Chemical Physics (2008), 10(19), 2686-2694, database is CAplus and MEDLINE.

A model for studying polar-π interactions between arenes spaced at van der Waals distances is developed on the basis of peri-diarylbiphenylenes. A set of 1,8-diarylbiphenylenes is synthesized comprising two Hammett series, one with reference to mesityl ring interactions and the other with reference to pentafluorophenyl ring interactions. X-Ray crystal structures of several derivatives are determined Barriers to rotation of the probe aryl ring are derived from dynamic NMR data and show a trend for the mesityl reference series (ΔG^≠vs. σ°). The model is also used as a test for comparison of modern d. functional methods, including B3LYP, M06-2X and BMK functionals; dispersive effects are seen to be an important factor in the proper theor. treatment of arene interactions.

Physical Chemistry Chemical Physics published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C7H8BClO2, SDS of cas: 209919-30-2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics