Category: chlorides-buliding-blocks

Al-Kindy, S. M. Z. published the artcileUV-visible absorption and fluorescence characteristics of the luminescent label coumarin-6-sulfonyl chloride in homogeneous and micellar solutions, Application of Coumarin-6-sulfonyl chloride, the publication is Analytica Chimica Acta (1994), 285(3), 329-33, database is CAplus.

This paper describes the study of the UV-visual absorption, fluorescence emission, and fluorescence excitation spectra of coumarin-6-sulfonyl chloride (C-6SCl) in various organic solvents and buffer solutions The spectral behavior in aqueous micellar systems of anionic and cationic surfactants was studied. The spectral properties of the compound together with the determined pK values in the ground and excited state are discussed in relation to its electronic structure. The results reflect the importance of the medium effect on the anal. application of C-6SCl as a potential luminescent label for derivatization of amino and phenolic groups.

Analytica Chimica Acta published new progress about 10543-42-7. 10543-42-7 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Chloride,Sulfonyl chlorides,Ester, name is Coumarin-6-sulfonyl chloride, and the molecular formula is C9H5ClO4S, Application of Coumarin-6-sulfonyl chloride.

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

Spagnuolo, Lauren A. published the artcileEvaluating the Contribution of Transition-State Destabilization to Changes in the Residence Time of Triazole-Based InhA Inhibitors, Formula: C6H3ClFNO2, the publication is Journal of the American Chemical Society (2017), 139(9), 3417-3429, database is CAplus and MEDLINE.

A critical goal of lead compound selection and optimization is to maximize target engagement while minimizing off-target binding. Since target engagement is a function of both the thermodn. and kinetics of drug-target interactions, it follows that the structures of both the ground states and transition states on the binding reaction coordinate are needed to rationally modulate the lifetime of the drug-target complex. Previously, the authors predicted the structure of the rate-limiting transition state that controlled the time-dependent inhibition of the enoyl-ACP reductase InhA. This led to the discovery of a triazole-containing di-Ph ether with an increased residence time on InhA due to transition state destabilization rather than ground state stabilization. In the present work, the authors have evaluated the inhibition of InhA by 14 triazole-based di-Ph ethers and used a combination of enzyme kinetics and x-ray crystallog. to generate a structure-kinetic relationship (SKR) for time-dependent binding. The authors show that the triazole motif slows the rate of formation for the final drug-target complex by up to three orders of magnitude. In addition, the authors identify a novel inhibitor with a residence time on InhA of 220 min which is 3.5-fold longer than that of the INH-NAD adduct formed by the tuberculosis drug, isoniazid. This study provides a clear example in which the lifetime of the drug-target complex is controlled by interactions in the transition state for inhibitor binding rather than the ground state of the enzyme-inhibitor complex, and demonstrates the important role that on-rates can play in drug-target residence time.

Journal of the American Chemical Society published new progress about 350-30-1. 350-30-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Nitro Compound,Benzene, name is 3-Chloro-4-fluoronitrobenzene, and the molecular formula is C14H22O2, Formula: C6H3ClFNO2.

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

Tehrani, Maliheh Barazandeh published the artcilePhthalimide-1,2,3-triazole hybrid compounds as tyrosinase inhibitors; synthesis, biological evaluation and molecular docking analysis, Computed Properties of 620-20-2, the publication is Journal of Molecular Structure (2019), 86-93, database is CAplus.

A novel series of phthalimide-1,2,3-triazole hybrids linked to benzyl ring containing different substituents were synthesized and evaluated for their tyrosinase inhibitory activity (inhibitory activity and inhibition kinetic). It was found that compounds 2-((1-(2-nitrobenzyl)-1H-1,2,3-triazol-4-yl)methyl)isoindoline-1,3-dione (I) and 2-((1-(2-bromobenzyl)-1H-1,2,3-triazol-4-yl)methyl)isoindoline-1,3-dione (II), exhibited the best tyrosinase inhibitory activity, with IC₅₀ values of 26.20 ± 1.55 and 26.55 ± 2.31 μM, resp. The inhibition kinetic anal. of I indicated that the compound inhibited tyrosinase in a competitive manner. Moreover, mol. docking anal. was performed to study the interactions and binding modes of the tested compounds Docking results confirmed that the active inhibitors well accumulated in the mushroom tyrosinase active site.

Journal of Molecular Structure 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 C10H14O2, Computed Properties of 620-20-2.

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

Albert, Anastasia published the artcileCharacteristics of Low-Temperature Plasma Ionization for Ambient Mass Spectrometry Compared to Electrospray Ionization and Atmospheric Pressure Chemical Ionization, Application of 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, the publication is Analytical Chemistry (Washington, DC, United States) (2012), 84(24), 10657-10664, database is CAplus and MEDLINE.

Ambient desorption/ionization mass spectrometry (ADI-MS) is an attractive method for direct anal. with applications in homeland security, forensics, and human health. For example, low-temperature plasma probe (LTP) ionization was successfully used to detect, e.g., explosives, drugs, and pesticides directly on the target. Despite the fact that the field is gaining significant attention, few attempts were made to classify ambient ionization techniques based on their ionization characteristics and performance compared to conventional ionization sources used in mass spectrometry. Relative ionization efficiencies (RIEs) for a large group of compound families were determined with LTP-Orbitrap-MS and compared to those obtained with electrospray ionization mass spectrometry (ESI-MS) and atm. pressure chem. ionization mass spectrometry (APCI-MS). RIEs were normalized against 1 reference compound used across all methods to ensure comparability of the results. Typically, LTP analyte ionization through protonation/deprotonation (e.g., 4-acetamidophenol) was observed; in some cases (e.g., acenaphthene) radicals were formed. Amines, amides, and aldehydes were ionized successfully with LTP. A benefit of LTP over conventional methods is the possibility to successfully ionize PAHs and imides. The studied model compounds could be detected by neither APCI nor ESI. LTP is a relatively soft ionization method because little fragmentation of model compounds was observed It is considered to be an attractive method for the ionization of low mol. weight compounds over a relatively wide polarity range.

Analytical Chemistry (Washington, DC, United States) published new progress about 6249-56-5. 6249-56-5 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst,Inhibitor,Natural product, name is 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, and the molecular formula is C7H16ClNO2, Application of 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride.

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

Vuorinen, Anna published the artcilePotential Antiosteoporotic Natural Product Lead Compounds That Inhibit 17β-Hydroxysteroid Dehydrogenase Type 2, Formula: C8H7ClO3, the publication is Journal of Natural Products (2017), 80(4), 965-974, database is CAplus and MEDLINE.

17β-Hydroxysteroid dehydrogenase type 2 (17β-HSD2) converts the active steroid hormones estradiol, testosterone, and 5α-dihydrotestosterone into their weakly active forms estrone, Δ⁴-androstene-3,17-dione, and 5α-androstane-3,17-dione, resp., thereby regulating cell- and tissue-specific steroid action. As reduced levels of active steroids are associated with compromised bone health and onset of osteoporosis, 17β-HSD2 is considered a target for antiosteoporotic treatment. In this study, a pharmacophore model based on 17β-HSD2 inhibitors was applied to a virtual screening of various databases containing natural products in order to discover new lead structures from nature. In total, 36 hit mols. were selected for biol. evaluation. Of these compounds, 12 inhibited 17β-HSD2 with nanomolar to low micromolar IC₅₀ values. The most potent compounds, nordihydroguaiaretic acid (1), IC₅₀ 0.38 ± 0.04 μM, (-)-dihydroguaiaretic acid (4), IC₅₀ 0.94 ± 0.02 μM, isoliquiritigenin (6), IC₅₀ 0.36 ± 0.08 μM, and Et vanillate (12), IC₅₀ 1.28 ± 0.26 μM, showed 8-fold or higher selectivity over 17β-HSD1. As some of the identified compounds belong to the same structural class, structure-activity relationships were derived for these mols. Thus, this study describes new 17β-HSD2 inhibitors from nature and provides insights into the binding pocket of 17β-HSD2, offering a promising starting point for further research in this area.

Journal of Natural Products 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 C42H63O3P, Formula: C8H7ClO3.

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

Kleimenov, B. V. published the artcileMechanism of the action of organic substances containing a trichloromethyl group in reducing friction under high-load conditions, Related Products of chlorides-buliding-blocks, the publication is Teoriya Smazochnogo Deistviya i Novye Materialy (1965), 48-52, database is CAplus.

Acids containing the CCl₃ group have high antiwear properties. These properties decrease considerably after replacing the H of the acid by an aliphatic radical or a base. In the presence of HOAc, the critical load is 96 kg., while with Cl₃CCO₂H, it is ≤300 kg. When CCl₃P(O)(OBu)₂ is applied, the critical load is lower than if a simple acid is used. Heating of CCl₃P(O)(OBu)₂ at 160-80° results in elimination of the hydrocarbon radical with formation of butylene, CCl₃P(O)(OBu)OH, and CCl₃P(O)(OH)₂. Heating of CCl₃P(O)(OH)₂ to 325° gives HCl and CO. No free Cl is formed. Two varieties of interaction between the additive and the metal surface occur: chemisorptive saturation of free bonds of the surface atoms of the metal without destroying the crystal lattice linkage, or full chem. linkage of the reagent with the metal atoms which may destroy the crystal lattice linkage. Thus, 2 antagonistic actions occur: the formation of a chem. modified surface and its destruction. The decrease of wear and seizing is achieved by the acceleration of the chem. modification. The presence of the CCl₃ group polarizes the additive mol. and increases the viscosity of chemisorption onto the surface of the metal. At high temperature of the friction zone, the additive undergoes thermal decomposition and formation of (trichloromethyl)phosphonic acids. These acids interact with the metal to form salts and modify the metallic surface. The interaction is an ionic oxidation-reduction and can be represented by the equation Fe + 2H⁺ = Fe⁺⁺ + 2H. The addition of the CCl₃ group increases the H⁺ concentration in the friction zone, which is one of the main reasons for the antiwear properties of compounds containing the CCl₃ group.

Teoriya Smazochnogo Deistviya i Novye Materialy 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, Related Products of chlorides-buliding-blocks.

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

Blazhevs’kii, M. E. published the artcileA spectrophotometric assay for kinetic determination of cholinesterase inhibitors using p-phenetidine oxidation, COA of Formula: C38H74Cl2N2O4, the publication is Farmatsevtichnii Zhurnal (Kiev) (2004), 52-58, database is CAplus.

An assay for detecting cholinesterase inhibitors using p-phenetidine oxidation is described. The high-sensitivity spectrophotometric assay is developed for quant. determination of quaternary ammonium salts, phenothiazine derivatives, phosphonous acid derivatives and some alkaloids. In the concentration range of the analyte 6·10^-19-6·10^-5 M the relative error does not exceed ±11%.

Farmatsevtichnii Zhurnal (Kiev) published new progress about 38146-42-8. 38146-42-8 belongs to chlorides-buliding-blocks, auxiliary class Achiral Phase-Transfer Catalysts, name is N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride, and the molecular formula is C38H74Cl2N2O4, COA of Formula: C38H74Cl2N2O4.

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

Munkuev, Aldar A. published the artcileAdamantane-Monoterpenoid Conjugates Linked via Heterocyclic Linkers Enhance the Cytotoxic Effect of Topotecan, Formula: C10H15ClO3S, the publication is Molecules (2022), 27(11), 3374, database is CAplus and MEDLINE.

Inhibiting tyrosyl-DNA phosphodiesterase 1 (TDP1) is a promising strategy for increasing the effectiveness of existing antitumor therapy since it can remove the DNA lesions caused by anticancer drugs, which form covalent complexes with topoisomerase 1 (TOP1). Here, new adamantane-monoterpene conjugates with a 1,2,4-triazole or 1,3,4-thiadiazole linker core were synthesized, where (+)-and (-)-campholenic and (+)-camphor derivatives were used as monoterpene fragments. The campholenic derivatives showed activity against TDP1 at a low micromolar range with IC₅₀ ~5-6μM, whereas camphor-containing compounds were ineffective. Surprisingly, all the compounds synthesized demonstrated a clear synergy with topotecan, a TOP1 poison, regardless of their ability to inhibit TDP1. These findings imply that different pathways of enhancing topotecan toxicity other than the inhibition of TDP1 can be realized.

Molecules published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C10H15ClO3S, Formula: C10H15ClO3S.

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

Raja, K. Kanmani published the artcileSynthesis, spectral, electrochemical and catalytic properties of Cu(II), Ni(II) and Co(II) complexes containing N,O donors, Computed Properties of 19652-33-6, the publication is Journal of Molecular Catalysis A: Chemical (2009), 303(1-2), 52-59, database is CAplus.

Metal(II) chelates of Schiff bases derived from the condensation of multi-substituted aniline with salicylaldehyde derivatives were prepared Product structures were determined by NMR, IR, EPR, magnetic and cyclic voltammetry measurements. The complexes are of the type M(X-DPMP)₂ [(M = Cu(II), Ni(II) or Co(II)), DPMP = 2-[[(2,6-diisopropylphenyl)imino]methyl]phenol, X = Br, Cl, I, BrCl]. These Schiff bases behave as monobasic bidentate ligands in their complexes. The spectral data indicate that the ligand coordinates through a phenolic oxygen and the azomethine nitrogen atoms. The observed A _|| values in the Cu(II) complexes indicate a tetrahedrally distorted square planar structure. The cyclic voltammetric redox potential of copper(II) and nickel(II) complexes suggest the existence of irreversible pairs in acetonitrile. Cu(Br-DPMP)₂ was found to be an efficient catalyst for the cyanosilylation of aldehydes under mild conditions.

Journal of Molecular Catalysis A: Chemical published new progress about 19652-33-6. 19652-33-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Benzene,Phenol,Aldehyde, name is 5-Bromo-3-chloro-2-hydroxybenzaldehyde, and the molecular formula is C7H4BrClO2, Computed Properties of 19652-33-6.

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

Budzikiewicz, Herbert published the artcilePhotosynthesis in green plants III. Investigation of the chemical processes in Metzner’s model for photosynthesis, Product Details of C22H23ClN4, the publication is Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie, Biochemie, Biophysik, Biologie (1970), 25(5), 525-8, database is CAplus and MEDLINE.

Thin-layer chromatog. investigations of the Metzner photosynthesis system show that no diethylsafranine is formed by reaction of Ag with janus green (I). Volume and pH measurements with and without I and chlorophyll a show that Cl formed by photolysis of AgCl, reacts with H2O to give HCl and O and also with I to give decomposition products.

Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie, Biochemie, Biophysik, Biologie published new progress about 4569-86-2. 4569-86-2 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride, and the molecular formula is C22H23ClN4, Product Details of C22H23ClN4.

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