Month: December 2022

Du, Huang-Chi published the artcileSynthesis of 5-substituted tetrazoles via DNA-conjugated nitrile, Synthetic Route of 254749-11-6, the publication is Organic & Biomolecular Chemistry (2020), 18(45), 9221-9226, database is CAplus and MEDLINE.

A zinc bromide-catalyzed synthesis of 5-substituted tetrazoles via DNA-conjugated nitriles using sodium azide has been developed. The protocol offered moderate to excellent yields of tetrazoles with a broad range of substrates, including a variety of functionalized aromatic, heterocyclic, and aliphatic nitriles. In addition, the electronic effect within the substrate scope was evaluated. DNA fidelity was assessed by ligation efficiency and amplifiability anal. The ability to generate tetrazoles expands the diversity of heterocycles in the preparation of DNA-encoded chem. libraries.

Organic & Biomolecular Chemistry published new progress about 254749-11-6. 254749-11-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Nitrile,Benzene, name is 2-Chloro-4-cyanobenzene-1-sulfonyl chloride, and the molecular formula is C7H3Cl2NO2S, Synthetic Route of 254749-11-6.

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

Pero, Joseph E. published the artcileDesign and Optimization of Sulfone Pyrrolidine Sulfonamide Antagonists of Transient Receptor Potential Vanilloid-4 with in Vivo Activity in a Pulmonary Edema Model, Product Details of C7H3Cl2NO2S, the publication is Journal of Medicinal Chemistry (2018), 61(24), 11209-11220, database is CAplus and MEDLINE.

Pulmonary edema is a common ailment of heart failure patients and has remained an unmet medical need due to dose-limiting side effects associated with current treatments. Preclin. studies in rodents have suggested that inhibition of transient receptor potential vanilloid-4 (TRPV4) cation channels may offer an alternative-and potentially superior-therapy. Efforts directed toward small-mol. antagonists of the TRPV4 receptor have led to the discovery of a novel sulfone pyrrolidine sulfonamide chemotype exemplified by lead compound 6. Design elements toward the optimization of TRPV4 activity, selectivity, and pharmacokinetic properties are described. Activity of leading exemplars 19 and 27 in an in vivo model suggestive of therapeutic potential is highlighted herein.

Journal of Medicinal Chemistry published new progress about 254749-11-6. 254749-11-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Nitrile,Benzene, name is 2-Chloro-4-cyanobenzene-1-sulfonyl chloride, and the molecular formula is C7H3Cl2NO2S, Product Details of C7H3Cl2NO2S.

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

Itoh, Hiroaki published the artcileControl of the cytotoxicity of dansylated polytheonamide mimic, an artificial peptide ion channel, by modification of the N-terminal structure, SDS of cas: 6249-56-5, the publication is Tetrahedron Letters (2014), 55(3), 728-731, database is CAplus.

We demonstrate that the cytotoxicity of dansylated polytheonamide mimic is controlled by chem. modification of its N-terminal structure. Dansylated polytheonamide mimic is an ion channel peptide which displays potent cytotoxicity against P388 mouse leukemia cells (IC₅₀ = 12 nM). To modulate its cytotoxicity, three analogs of dansylated polytheonamide mimic, possessing distinct N-terminal structures with different hydrophobicities, were synthesized and their cytotoxicities were evaluated. This focused structure-activity relationship study unveiled that the cytotoxicity of dansylated polytheonamide mimic is enhanced 10-fold by simply changing its N-terminal 5,5-dimethyl-2-oxohexanamide to the more hydrophobic palmitamide. The data obtained here provide new understanding for the functional control of the artificial ion channel peptide.

Tetrahedron Letters 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, SDS of cas: 6249-56-5.

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

Okawara, Tadashi published the artcileConvenient syntheses of cyclic carboxamides from α,β,γ,δ and ε-halocarboxamides under phase transfer conditions, COA of Formula: C3H3Br2ClO, the publication is Chemical & Pharmaceutical Bulletin (1982), 30(4), 1225-33, database is CAplus.

Piperazine-2,5-diones I (R = H, Me; R¹ = PhCH₂, Ph) were prepared by N-alkylation between two mols. of α-halocarboxamides RCHXCONHR¹ (same R, R¹; X = Cl, Br) in the presence of a phase transfer catalyst in yields of 64-88%. II (R=H, Me; R¹=H, Me, Br; R²=Ph, PhCH₂), III (Q= CH₂CH₂, o-, m-, and p-phenylene, p-C₆H₄SO₂C₆H₄–p), IV (R= H, Me; R¹= PhCH₂, Ph; n=1,2,3) were similarly synthesized by intramol. N-alkylation of the corresponding halocarboxamides under phase transfer conditions in 53-99 % yields.

Chemical & Pharmaceutical Bulletin published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C3H3Br2ClO, COA of Formula: C3H3Br2ClO.

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

Orehovec, Iva published the artcileBis-pyrene photo-switch open- and closed-form differently bind to ds-DNA, ds-RNA and serum albumin and reveal light-induced bioactivity, Application In Synthesis of 219537-97-0, the publication is International Journal of Molecular Sciences (2021), 22(9), 4916, database is CAplus and MEDLINE.

Newly designed and synthesized diarylethene (DAE) derivatives with aliphatic amine sidearms I and one with two pyrenes II, revealed excellent photo-switching property of central DAE core in MeOH and water. The only exception was bis-pyrene analog, its DAE core very readily photochem. closed, but reversible opening completely hampered by aromatic stacking interaction of pyrene(s) with cyclic DAE. In this process, pyrene fluorescence showed to be a reliable monitoring method, an open form characterized by strong emission at 480 nm (typical for pyrene-aggregate), while closed form emitted weakly at 400 nm (typical for pyrene-DAE quenching). Only open DAE-bis-pyrene form interacted measurably with ds-DNA/RNA by flexible insertion in polynucleotide grooves, while self-stacked closed form did not bind to DNA/RNA. For the same steric reasons, flexible open DAE-bis-pyrene form was bound to at least three different binding sites at bovine serum albumin (BSA), while rigid, self-stacked closed form interacted dominantly with only one BSA site. Preliminary screening of antiproliferative activity against human lung carcinoma cell line A549 revealed that all DAE-derivatives were non-toxic. However, bis-pyrene analog efficiently entered cells and located in the cytoplasm, whereby irradiation by light (315-400 nm) resulted in a strong, photo-induced cytotoxic effect, typical for pyrene-related singlet oxygen species production

International Journal of Molecular Sciences 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 C15H14Cl2S2, Application In Synthesis of 219537-97-0.

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

Chevalier, Arnaud published the artcileBioconjugatable Azo-Based Dark-Quencher Dyes: Synthesis and Application to Protease-Activatable Far-Red Fluorescent Probes, Formula: C22H23ClN4, the publication is Chemistry – A European Journal (2013), 19(5), 1686-1699, database is CAplus and MEDLINE.

The authors describe the efficient synthesis and one-step derivatization of novel, nonfluorescent azo dyes based on the Black Hole Quencher-3 (BHQ-3) scaffold. These dyes were equipped with various reactive and/or bioconjugatable groups (azido, α-iodoacetyl, ketone, terminal alkyne, vicinal diol). The azido derivative is highly reactive in the context of copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions and allowed easy synthetic access to the first water-soluble (sulfonated derivative) and aldehyde-modified BHQ-3 dyes, the direct preparation of which failed by conventional azo-coupling reactions. The aldehyde- and α-iodoacetyl-containing fluorescence quenchers were readily conjugated to aminooxy- and cysteine-containing peptides by the formation of a stable oxime or thioether linkage, resp. Further fluorescent labeling of the resultant peptide conjugates with red- or far-red-emitting rhodamine or cyanine dyes through sequential and/or one-pot bioconjugations, led to novel Foerster resonance energy transfer (FRET) based probes suitable for the in vivo detection and imaging of urokinase plasminogen activator, a key protease in cancer invasion and metastasis.

Chemistry – A European Journal 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, Formula: C22H23ClN4.

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

Tan, Daniel A. published the artcileSynthesis of Distally-Bridged Chiral Resorcinarene Crowns, Category: chlorides-buliding-blocks, the publication is European Journal of Organic Chemistry (2020), 2020(35), 5695-5708, database is CAplus.

Our interest in the potential of chiral tetramethoxy-resorcinarene as agents for chiral recognition has led us to synthesize twelve distally-bridged chiral resorcinarene crowns. The fascinating architecture of these partially-enclosed chiral basket mols. is evident in the solid-state structures which have been determined by single-crystal X-ray crystallog. Moreover, the enantiomers of these chiral resorcinarene crowns have been resolved via diastereomeric resolution, with the absolute configuration of the diastereomers being determined by X-ray crystallog. This work enables further exploration of these enantio-pure chiral baskets as possible chiral resolving agents.

European Journal of Organic Chemistry 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 C5H4N4, Category: chlorides-buliding-blocks.

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

Dulski, Mateusz published the artcileDifferent route of hydroxide incorporation and thermal stability of new type of water clathrate: X-ray single crystal and Raman investigation, Safety of Sodium chloro(tosyl)amide trihydrate, the publication is Scientific Reports (2017), 7(1), 1-9, database is CAplus and MEDLINE.

Chlormayenite Ca₁₂Al₁₄O₃₂[₄Cl₂] (-vacancy) is partially hydrated micro porouss mineral with hydroxide groups situated at various crystallog. sites. There are few mechanisms describing its hydration. The first one assumes Cl^– substitution by OH^– at the center of the structural cages (W-site). The second one determines the converting a T1O₄ tetrahedron to a T1O₃(OH)₃ octahedron due to the replacement of oxygen at the O2 site by three OH-groups according to the scheme: (^O2O^2- + ^WCl^–) → 3 × ^O2aOH. The third mechanism, not considered so far in the case of zeolite-like minerals, includes the hydroxide incorporation in form of hydrogarnet defect due to the arrangement of tetrahedral (OH)₄ in vacant cages. This yields a strong hydrated phase containing even up to 35% of water more than in any currently known mineral applicable to Portland cement. Moreover, water mols. present in different structural cages are stable up to 355 K while dehydroxylation linked to the gradual loss of only 8% of OH^– groups according to 3^O2aOH^– → ^O2O^2- +^WOH^– + ^gH₂O occurs at temperature range from 355 K to 598 K.

Scientific Reports published new progress about 7080-50-4. 7080-50-4 belongs to chlorides-buliding-blocks, auxiliary class Halogenation Reagent,Inhibitor, name is Sodium chloro(tosyl)amide trihydrate, and the molecular formula is C7H13ClNNaO5S, Safety of Sodium chloro(tosyl)amide trihydrate.

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

Boehm, Philip published the artcilePalladium-Catalyzed Decarbonylative Iodination of Aryl Carboxylic Acids Enabled by Ligand-Assisted Halide Exchange, Synthetic Route of 6313-54-8, the publication is Angewandte Chemie, International Edition (2021), 60(31), 17211-17217, database is CAplus and MEDLINE.

An efficient and broadly applicable palladium-catalyzed iodination of inexpensive and abundant aryl and vinyl carboxylic acids via in situ activation to the acid chloride and formation of a phosphonium salt is reported. The use of 1-iodobutane as iodide source in combination with a base and a deoxychlorinating reagent gives access to a wide range of aryl and vinyl iodides under Pd/Xantphos catalysis, including complex drug-like scaffolds. Stoichiometric experiments and kinetic anal. suggest a unique mechanism involving C-P reductive elimination to form the Xantphos phosphonium chloride, which subsequently initiates an unusual halogen exchange by outer sphere nucleophilic substitution.

Angewandte Chemie, International Edition 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, Synthetic Route of 6313-54-8.

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

Esteruelas, Miguel A. published the artcileDirect C-H Borylation of Arenes Catalyzed by Saturated Hydride-Boryl-Iridium-POP Complexes: Kinetic Analysis of the Elemental Steps, Recommanded Product: 2-(4-Chloro-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the publication is Chemistry – A European Journal (2020), 26(55), 12632-12644, database is CAplus and MEDLINE.

The saturated trihydride IrH₃{κ³-P,O,P-[xant(PiPr₂)₂]} (1; xant(PiPr₂)₂ = 9,9-dimethyl-4,5-bis(diisopropylphosphino)xanthene) activates the B-H bond of two mols. of pinacolborane (HBpin) to give H₂, the hydride-boryl derivatives IrH₂(Bpin){κ³-P,O,P-[xant(PiPr₂)₂]} (2) and IrH(Bpin)₂{κ³-P,O,P-[xant(PiPr₂)₂]} (3) in a sequential manner. Complex 3 activates a C-H bond of two mols. of benzene to form PhBpin and regenerates 2 and 1, also in a sequential manner. Thus, complexes 1, 2, and 3 define two cycles for the catalytic direct C-H borylation of arenes with HBpin, which have dihydride 2 as a common intermediate. C-H bond activation of the arenes is the rate-determining step of both cycles, as the C-H oxidative addition to 3 is faster than to 2. The results from a kinetic study of the reactions of 1 and 2 with HBpin support a cooperative function of the hydride ligands in the B-H bond activation. The addition of the B atom of the borane to a hydride facilitates the coordination of the B-H bond through the formation of κ¹– and κ²-dihydrideborate intermediates.

Chemistry – A European Journal published new progress about 765917-27-9. 765917-27-9 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Boronic acid and ester,Benzene,Boronate Esters, name is 2-(4-Chloro-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C12H15BClFO2, Recommanded Product: 2-(4-Chloro-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

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