Category: chlorides-buliding-blocks

Grassi, Luigi published the artcileAn explorative study towards the chemical synthesis of the immunoglobulin G1 Fc CH3 domain, Formula: C19H14Cl2, the publication is Journal of Peptide Science (2018), 24(12), n/a, database is CAplus and MEDLINE.

Monoclonal antibodies, fusion proteins including Ig fragment c (Ig Fc) CH2-CH3 domains, and engineered antibodies are prominent representatives of an important class of drugs and drug candidates, which are referred to as biotherapeutics or biopharmaceuticals. These recombinant proteins are highly heterogeneous due to their glycosylation pattern. In addition, enzyme-independent reactions, like deamidation, dehydration, and oxidation of sensitive side chains, may contribute to their heterogeneity in a minor amount To investigate the biol. impact of a spontaneous chem. modification, especially if found to be recurrent in a biotherapeutic, it would be necessary to reproduce it in a homogeneous manner. Here, we undertook an explorative study toward the chem. synthesis of the IgG1 Fc CH3 domain, which has been shown to undergo spontaneous changes like succinimide formation and methionine oxidation We used Fmoc-solid-phase peptide synthesis (SPPS) and native chem. ligation (NCL) to test the accessibility of large fragments of the IgG1 Fc CH3 domain. In general, the incorporation of pseudoproline dipeptides improved the quality of the crude peptide precursors; however, sequences larger than 44 residues could not be achieved by standard stepwise elongation with Fmoc-SPPS. In contrast, the application of NCL with Cys residues, which were either native or introduced ad hoc, allowed the assembly of the C-terminal IgG1 Fc CH3 sequence 371 to 450. The syntheses reported here show advantages and limitations of the chem. approaches chosen for the preparation of the synthetic IgG1 Fc CH3 domain and will guide future plans toward the synthesis of both the native and selectively modified full-length domain.

Journal of Peptide Science published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, Formula: C19H14Cl2.

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

Kamdem, Nestor published the artcileSmall-molecule inhibitors of the PDZ domain of Dishevelled proteins interrupt Wnt signalling, Computed Properties of 61551-49-3, the publication is Magnetic Resonance (2021), 2(1), 355-374, database is CAplus.

Dishevelled (Dvl) proteins are important regulators of the Wnt signalling pathway, interacting through their PDZ domains with the Wnt receptor Frizzled. Blocking the Dvl PDZ-Frizzled interaction represents a potential approach for cancer treatment, which stimulated the identification of small-mol. inhibitors, among them the anti-inflammatory drug Sulindac and Ky-02327. Aiming to develop tighter binding compounds without side effects, we investigated structure-activity relationships of sulfonamides. X-ray crystallog. showed high complementarity of anthranilic acid derivatives in the GLGF loop cavity and space for ligand growth toward the PDZ surface. Our best binding compound inhibits Wnt signalling in a dose-dependent manner as demonstrated by TOP-GFP assays (IC50 ∼ 50 μM) and Western blotting of β-catenin levels. Realtime PCR showed reduction in the expression of Wnt-specific genes. Our compound interacted with Dvl-1 PDZ (KD = 2.4 μM) stronger than Ky-02327 and may be developed into a lead compound interfering with the Wnt pathway.

Magnetic Resonance published new progress about 61551-49-3. 61551-49-3 belongs to chlorides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 5,6,7,8-Tetrahydronaphthalene-2-sulfonyl chloride, and the molecular formula is C10H11ClO2S, Computed Properties of 61551-49-3.

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

Fattori, Daniela published the artcileDesign and synthesis of novel sulfonamide-containing bradykinin hB₂ receptor antagonists. 2. synthesis and structure-activity relationships of α,α-cycloalkylglycine sulfonamides, HPLC of Formula: 6249-56-5, the publication is Journal of Medicinal Chemistry (2007), 50(3), 550-565, database is CAplus and MEDLINE.

Recently, the design and synthesis of a class of selective nonpeptide bradykinin (BK) B₂ receptor antagonists (J. Med. Chem. 2006, 3602-3613) was reported. This work led to the discovery of MEN 15442 (I), an antagonist with subnanomolar affinity for the human B2 receptor (hB2R), which also displayed significant and prolonged activity in vivo (for up to 210 min) against BK-induced bronchoconstriction in the guinea-pig at a dose of 300 nmol/kg (it), while demonstrating only a slight effect on BK-induced hypotension. Herein, the further optimization of this series of compounds aimed at maximizing the effect on bronchoconstriction and minimizing the effect on hypotension, with a view to developing topically delivered drugs for airway diseases, is described. It was found that MEN 16132 (II), after intratracheal or aerosol administration, inhibited, in a dose-dependent manner, BK-induced bronchoconstricton in the airways, while showing minimal systemic activity. This compound was selected as a preclin. candidate for the topical treatment of airway diseases involving kinin B2 receptor stimulation.

Journal of Medicinal Chemistry 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, HPLC of Formula: 6249-56-5.

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

Grimova, J. published the artcileTo what extent can results of experimental studies be extrapolated in predicting adverse side effects of drugs in man?, Application In Synthesis of 33697-81-3, the publication is Archives of Toxicology, Supplement (1986), 9(Toxic Interfaces Neurones), 240-3, database is CAplus.

A study of the pharmacokinetics and biotransformation of benzofenac (I) [60736-70-1] was conducted in exptl. animals (rats, rabbits, and dogs) and in human volunteers. The main urinary metabolites in the rat and dog are substances II  [33697-81-3], III  [90276-10-1], and IV [90276-12-3], and in the rabbit and man II and II. Man differs from animals in the quantities of the individual metabolites. Some metabolites were prepared and tested for embryotoxicity in chicken and rat embryos. Of all the metabolites, metabolite IV is responsible for the embryotoxic action of I. This metabolite never occurs in the rabbit or man. These results substantiate the necessity of carrying out concurrent comparative pharmacokinetic and biotransformation studies of new drugs in exptl. animals and man during the preclin. research stage.

Archives of Toxicology, Supplement 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, Application In Synthesis of 33697-81-3.

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

Karimi, Nafiseh published the artcile4-(1-benzyl-1H-benzo[d]imidazol-2-yl)-4-oxo-2-butenoic acid derivatives: design, synthesis and anti-HIV-1 activity, Formula: C7H6Cl2, the publication is Iranian Journal of Pharmaceutical Research (2021), 20(1), 408-417, database is CAplus and MEDLINE.

Integrase, targeted in highly active antiretroviral therapy (HAART), was a crucial enzyme in viral replication. In this study, new benzimidazolyl diketo acid derivatives I [R = Ph, 2-MeC₆H₄, 2-FC₆H₄, etc.] were designed according to required features for inhibitors of HIV-1 integrase. Designed compounds I were evaluated for anti-HIV-1 effects and docking studies indicated that the binding mode of compound I [R = 2-FC₆H₄] was similar to INSTIs. According to the cell-based biol. assay’s results, most of the tested compounds I demonstrated good anti-HIV-1 activity, ranging from 40-90μM concentration with no severe cytotoxicity.

Iranian Journal of Pharmaceutical Research 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, Formula: C7H6Cl2.

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

Beugelmans, Rene published the artcileSynthetic studies towards western and eastern macropolypeptide subunits of kistamicin, Category: chlorides-buliding-blocks, the publication is Tetrahedron (1999), 55(16), 5089-5112, database is CAplus.

Simplified models of the western and eastern macropolypeptide subunits of kistamicin were prepared The western subunit model I (fused bicyclic 16+15 membered ring) was synthesized by sequential intramol. S_NAr reaction and the first 17-membered ring compound as model of the eastern subunit II was obtained by an intramol. Ni⁰ mediated coupling reaction.

Tetrahedron 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

Balaraman, Harish Babu published the artcileHigh selective purification of IgY from quail egg: Process design and quantification of deep eutectic solvent based ultrasound assisted liquid phase microextraction coupled with preparative chromatography, HPLC of Formula: 23616-79-7, the publication is International Journal of Biological Macromolecules (2020), 253-262, database is CAplus and MEDLINE.

The present research investigates on task-specific deep eutectic solvents (TDES) based aqueous two-phase extraction and purification of Igs by chromatog. from quail egg. The synthesis of TDES was accomplished with quaternary ammonium salt as hydrogen bond acceptor (HBA) and glycerol as hydrogen bond donor (HBD). Aqueous two-phase (ATPS) formation of TDESs with various salts was established and phase partitioning ability was evaluated using standard bovine Ig. Ultrasound-assisted liquid-liquid microextraction (UA-LLME) was performed with ATPS of better partitioning ability for quail egg yolk. Optimization of influential variables with response surface methodol. was accomplished and maximum yield was achieved for 85% (volume/volume) of NADES for feed of 18μg/mL of egg yolk isolate with ultrasound temperature of 35°C and 12 min contact time resp. The quantification of recovery was accomplished by gel filtration process with the determination of retention time, volume and resolution of separation using marker protein. Ultrapure Ig-Y (IgY) is achieved with anion exchange chromatog. and yield was calculated The results revealed that the selective concentration of Ig-Y from quail egg yolk could be performed using environment-friendly TDES based UA-LLME coupled with chromatog.

International Journal of Biological Macromolecules 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, HPLC of Formula: 23616-79-7.

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

Balaraman, Harish Babu published the artcileKinetics and microwave-assisted extractive transesterification studies of high octane methyl esters (HOME) from karanja and chicken lard oil using protic deep eutectic solvent, Quality Control of 23616-79-7, the publication is Fuel (2020), 117299, database is CAplus.

The bio-conversion of fatty oils recovered from chicken waste and Karanja by both enzymic and microwave-assisted transesterification (MATE) into fatty acid Me esters (FAME) were performed in the present investigation. Evaluation of physicochem. properties and yield of biodiesel produced reveals the production of esters from chicken waste oil to be effective than the counterparts obtained from karanja oil. Intensification of transesterification process with chicken waste oil was carried out by employing protic deep eutectic solvents (pDES) for production of high octane Me esters (HOME). The thermophys. evaluation of synthesized pDES show low values of d., viscosity and refractive index which decrease with the further increase in temperature The use pDES reduces the mass transfer limitation in biodiesel formation at the lowest acyl acceptor ratio of 1:4. Response surface methodol. based optimization for microwave-assisted biodiesel production indicate the usage of the lowest power of 1.4 kW with a min. volume of pDES (8%) at the optimal time of 25 min yields 96.4% pure biodiesel. The composition of obtained biodiesel was evaluated with GC-MS. The resulting biodiesel obtained is suitable additive to mineral based fuels.

Fuel 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, Quality Control of 23616-79-7.

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

Sadhukhan, Dipali published the artcileWeak Interactions Modulating the Dimensionality in Supramolecular Architectures in Three New Nickel(II)-Hydrazone Complexes, Magnetostructural Correlation, and Catalytic Potential for Epoxidation of Alkenes under Phase Transfer Conditions, Category: chlorides-buliding-blocks, the publication is Inorganic Chemistry (2011), 50(17), 8326-8339, database is CAplus and MEDLINE.

Three different ONO donor acetyl hydrazone Schiff bases have been synthesized from the condensation of acetic hydrazide with three different carbonyl compounds: salicylaldehyde (HL¹), 2-hydroxyacetophenone (HL²), and 2,3-dihydroxybenzaldehyde (HL³). These tridentate ligands are reacted with Ni(OOCCF₃)₂·xH₂O to yield three new Ni(II) complexes having distorted octahedral geometry at each Ni center: [Ni(L¹)(OOCCF₃)(CH₃OH)]₂ (1), [Ni(L²)(OOCCF₃)(H₂O)]₂ (2), and [Ni(L³)(L³H)](OOCCF₃)(H₂O)_1.65(CH₃OH)_0.35 (3). The ligands and the complexes have been characterized by elemental anal. and IR and UV-visible spectroscopy, and the structures of the complexes have been established by single crystal XRD study. 1 And 2 are centrosym. dinuclear complexes and are structural isomers whereas 3 is a bis chelated cationic monomer coordinated by one neutral and one monoanionic ligand. O-H···O hydrogen bonds in 3 give a dimer. Slight steric and electronic modifications in the ligand backbone provoke differences in the supramol. architectures of the complexes, leading to a variety of one, two, and three-dimensional hydrogen bonded networks in complexes 1–3, resp. Variable temperature magnetic susceptibility measurements reveal that moderate antiferromagnetic interactions operate between phenoxo bridged Ni(II) dimers in 1 and 2 whereas very weak antiferromagnetic exchange occurs through hydrogen bonding and π-π stacking interactions in 3. All complexes are efficient catalysts for the epoxidation of alkenes by NaOCl under phase transfer condition. The efficiency of alkene epoxidation is dramatically enhanced by lowering the pH, and the reactions are supposed to involve high valent Ni^III-OCl or Ni^III-O·intermediates. 3 Is the best epoxidation catalyst among the three complexes with 99% conversion and very high turnover number (TON, 396).

Inorganic Chemistry 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, Category: chlorides-buliding-blocks.

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

Zawadowski, Teodor published the artcileSynthesis of 3-carboxy-2,7-dimethylfuro[2,3-f]benzofuran and some of its derivatives with expected pharmacological activity. I, Application In Synthesis of 4584-49-0, the publication is Acta Poloniae Pharmaceutica (1986), 43(1), 13-17, database is CAplus.

O-Alkylation of benzofuran I (R = H) with BrCH₂CO₂Et gave I (R = CH₂CO₂Et), which was saponified with KOH and cyclized (NaOAc in Ac₂O) to benzodifuran II. II was converted to Me, Et, and several tertiary 2-aminoalkyl esters, isolated as HCl salts.

Acta Poloniae Pharmaceutica published new progress about 4584-49-0. 4584-49-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Salt,Amine,Aliphatic hydrocarbon chain, name is 2-Chloro-N,N-dimethylpropan-1-amine hydrochloride, and the molecular formula is C6H8N2O2S, Application In Synthesis of 4584-49-0.

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