Month: December 2022

Theodorou, Alexis published the artcileGreen Organocatalytic Synthesis of Indolines and Pyrrolidines from Alkenes, SDS of cas: 21286-54-4, the publication is Advanced Synthesis & Catalysis (2017), 359(9), 1577-1581, database is CAplus.

Employing a green and efficient 2,2,2-trifluoroacetophenone-catalyzed oxidation of alkenes, which utilized H₂O₂ as the green oxidant, a novel and sustainable synthesis of indolines and pyrrolidines was developed. This constituted a cheap, general and environmentally-friendly protocol for the synthesis of substituted nitrogen-containing heterocycles. A variety of substitution patterns, both aromatic and aliphatic moieties, were well tolerated led to the desired nitrogen heterocycles in good to excellent yields.

Advanced Synthesis & Catalysis 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 C5H5ClO2, SDS of cas: 21286-54-4.

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

Sasano, Yusuke published the artcile2-Azaadamantane N-oxyl (AZADO)/Cu Catalysis Enables Chemoselective Aerobic Oxidation of Alcohols Containing Electron-Rich Divalent Sulfur Functionalities, Category: chlorides-buliding-blocks, the publication is Organic Letters (2018), 20(19), 6104-6107, database is CAplus and MEDLINE.

The chemoselective oxidation of alcs. containing electron-rich sulfur functionalities (e.g., 1,3-dithianes and sulfides) into their corresponding carbonyl compounds with the sulfur groups can sometimes be a demanding task in modern organic chem. A reliable method for this transformation, which features azaadamantane-type nitroxyl radical/copper catalysis using ambient air as the terminal oxidant is reported. The superiority of the developed method was demonstrated by comparing it with various conventional alc. oxidation methods.

Organic Letters 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, Category: chlorides-buliding-blocks.

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

Gioti, Efthymia G. published the artcileA new scalable synthesis of entecavir, Application In Synthesis of 7080-50-4, the publication is Tetrahedron (2018), 74(4), 519-527, database is CAplus.

A new synthesis of entecavir from D-glucose in an average total yield of 3.5% was achieved via an intramol. nitrile oxide cycloaddition (INOC) reaction and a Peterson olefination as key-steps. The present process was designed for industrial application, using widely available raw materials, simple and cheap reagents and avoiding low reaction temperatures, which are very common in the synthetic approaches towards similarly complex structures.

Tetrahedron 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, Application In Synthesis of 7080-50-4.

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

Esmaeilzadeh, Pegah published the artcileStimuli-responsive multilayers based on thiolated polysaccharides that affect fibroblast cell adhesion, HPLC of Formula: 7080-50-4, the publication is ACS Applied Materials & Interfaces (2018), 10(10), 8507-8518, database is CAplus and MEDLINE.

Control of the biomaterial properties through stimuli-responsive polymeric platforms has become an essential technique in recent biomedical applications. A multilayer system of thiolated chitosan (t-Chi) and thiolated chondroitin sulfate (t-CS), consisting of five double layers ([t-Chi/t-CS]₅), was fabricated here by applying a layer-by-layer coating strategy. To represent a novel class of chem. tunable nanostructures, the ability to cross-link pendant thiol groups was tested by a rise from pH 4 during layer formation to pH 9.3 and a more powerful chem. stimulus by using chloramine-T (ChT). Following both treatments, the resulting multilayers showed stimuli-dependent behavior, as demonstrated by their content of free thiols, wettability, surface charge, elastic modulus, roughness, topog., thickness, and binding of fibronectin. Studies with human dermal fibroblasts further demonstrated the favorable potential of the ChT-responsive multilayers as a cell-adhesive surface compared to pH-induced crosslinking. Because the [t-Chi/t-CS]₅ multilayer system is responsive to stimuli such as the pH and redox environment, multilayer systems with disulfide bond formation may help to tailor their interaction with cells, film degradation, and controlled release of bioactive substances like growth factors in a stimuli-responsive manner useful in future wound healing and tissue engineering applications.

ACS Applied Materials & Interfaces 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, HPLC of Formula: 7080-50-4.

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

Duesel, Simon Josef Siegfried published the artcileOxidative Photochlorination of Electron-Rich Arenes via in situ Bromination, Application In Synthesis of 637-07-0, the publication is European Journal of Organic Chemistry (2020), 2020(10), 1491-1495, database is CAplus.

Electron-rich arenes are oxidatively photochlorinated in the presence of catalytic amounts of bromide ions, visible light, and 4CzIPN as organic photoredox catalyst. The substrates are brominated in situ in a first photoredox-catalyzed oxidation step, followed by a photocatalyzed ipso-chlorination, yielding the target compounds in high ortho/para regioselectivity. Dioxygen serves as a green and convenient terminal oxidant. The use of aqueous hydrochloric acid as the chloride source reduces the amount of saline byproducts.

European Journal of Organic Chemistry published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C12H15ClO3, Application In Synthesis of 637-07-0.

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

Goestl, Robert published the artcileSterically crowding the bridge of dithienylcyclopentenes for enhanced photoswitching performance, SDS of cas: 219537-97-0, the publication is Chemistry – A European Journal (2012), 18(45), 14282-14285, S14282/1-S14282/28, database is CAplus and MEDLINE.

Diarylethenes (DAEs) are photochromic mols. with outstanding physicochem. properties. They are ideal for incorporation into materials for optoelectronics because of their superior switching properties. DAEs undergo a reversible 6p electrocyclic reaction upon irradiation with light. The efficiency of the photocyclization reaction is governed by its quantum yield, which is dependent on the equilibrium between the parallel (p) and the antiparallel (ap) conformation. Steric repulsion, which is largely independent of the environment, can also be used to influence the equilibrium between p and ap conformation. Herein, we report a synthetically straightforward method for introducing bulky substituents into the bridge moiety of dithienylcyclopentenes, thus leading to derivatives exhibiting higher photocyclization quantum yield.

Chemistry – A European Journal 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, SDS of cas: 219537-97-0.

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

Kaneyasu, Tomoko published the artcileAuxin response, but not its polar transport, plays a role in hydrotropism of Arabidopsis roots, Category: chlorides-buliding-blocks, the publication is Journal of Experimental Botany (2007), 58(5), 1143-1150, database is CAplus and MEDLINE.

Plants are sessile in nature, and need to detect and respond to many environmental cues in order to regulate their growth and orientation. Indeed, plants sense numerous environmental cues and respond via appropriate tropisms, and it is widely accepted that auxin plays an important role in these responses. Recent analyses using Arabidopsis have emphasized the importance of polar auxin transport and differential auxin responses to gravitropism. Even so, the involvement of auxin in hydrotropism remains unclear. To clarify whether or not auxin is involved in the hydrotropic response, Arabidopsis seedlings were treated with inhibitors of auxin influx (3-chloro-4-hydroxyphenylacetic acid), efflux (1-naphthylphthalemic acid and 2,3,5-triiodobenzoic acid), and response (p-chlorophenoxyisobutylacetic acid), and their effects were examined on both hydrotropic and gravitropic responses. In agreement with previous reports, gravitropism was inhibited by all the chems. tested. By contrast, only an inhibitor of the auxin response (p-chlorophenoxyisobutylacetic acid) reduced hydrotropism, whereas inhibitors for influx or efflux of auxin had no effect. These results suggest that auxin response, apart from its polar transport, plays a definite role in hydrotropic response, and will evoke a new concept for the auxin-mediated regulation of tropisms.

Journal of Experimental Botany 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

Hoerner, Sebastian published the artcileNanoscale Biodegradable Organic-Inorganic Hybrids for Efficient Cell Penetration and Drug Delivery, Computed Properties of 6249-56-5, the publication is Angewandte Chemie, International Edition (2016), 55(47), 14842-14846, database is CAplus and MEDLINE.

We report a comprehensive study on novel, highly efficient, and biodegradable hybrid mol. transporters. To this end, we designed a series of cell-penetrating, cube-octameric silsesquioxanes (COSS), and investigated cellular uptake by confocal microscopy and flow cytometry. A COSS with dense spatial arrangement of guanidinium groups displayed fast uptake kinetics and cell permeation at nanomolar concentrations in living HeLa cells. Efficient uptake was also observed in bacteria, yeasts, and archaea. The COSS-based carrier was significantly more potent than cell-penetrating peptides (CPPs) and displayed low toxicity. It efficiently delivered a covalently attached cytotoxic drug, doxorubicin, to living tumor cells. As the uptake of fluorescently labeled carrier remained in the presence of serum, the system could be considered particularly attractive for the in vivo delivery of therapeutics.

Angewandte Chemie, International Edition 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, Computed Properties of 6249-56-5.

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

Klein, Philipp Michael published the artcileEfficient shielding of polyplexes using heterotelechelic polysarcosines, Recommanded Product: 2-Chlorotrityl chloride, the publication is Polymers (Basel, Switzerland) (2018), 10(6), 689/1-689/21, database is CAplus and MEDLINE.

Shielding agents are commonly used to shield polyelectrolyte complexes, e.g., polyplexes, from agglomeration and precipitation in complex media like blood, and thus enhance their in vivo circulation times. Since up to now primarily poly(ethylene glycol) (PEG) has been investigated to shield non-viral carriers for systemic delivery, we report on the use of polysarcosine (pSar) as a potential alternative for steric stabilization. A redox-sensitive, cationizable lipo-oligomer structure (containing two cholanic acids attached via a bioreducible disulfide linker to an oligoaminoamide backbone in T-shape configuration) was equipped with azide-functionality by solid phase supported synthesis. After mixing with small interfering RNA (siRNA), lipopolyplexes formed spontaneously and were further surface-functionalized with polysarcosines. Polysarcosine was synthesized by living controlled ring-opening polymerization using an azide-reactive dibenzo-aza-cyclooctyne-amine as an initiator. The shielding ability of the resulting formulations was investigated with biophys. assays and by near-IR fluorescence bioimaging in mice. The modification of ∼100 nm lipopolyplexes was only slightly increased upon functionalization. Cellular uptake into cells was strongly reduced by the pSar shielding. Moreover, polysarcosine-shielded polyplexes showed enhanced blood circulation times in bioimaging studies compared to unshielded polyplexes and similar to PEG-shielded polyplexes. Therefore, polysarcosine is a promising alternative for the shielding of non-viral, lipo-cationic polyplexes.

Polymers (Basel, Switzerland) 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, Recommanded Product: 2-Chlorotrityl chloride.

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

Kumar, Awanish published the artcileViscosity-Reducing Bulky-Salt Excipients Prevent Gelation of Protein, but Not Carbohydrate, Solutions, SDS of cas: 21286-54-4, the publication is Applied Biochemistry and Biotechnology (2017), 182(4), 1491-1496, database is CAplus and MEDLINE.

The problem of gelation of concentrated protein solutions, which poses challenges for both downstream protein processing and liquid formulations of pharmaceutical proteins, is addressed herein by employing previously discovered viscosity-lowering bulky salts. Procainamide-HCl and the salt of camphor-10-sulfonic acid with L-arginine (CSA-Arg) greatly retard gelation upon heating and subsequent cooling of the model proteins gelatin and casein in water: Whereas in the absence of additives the proteins form aqueous gels within several hours at room temperature, procainamide-HCl for both proteins and also CSA-Arg for casein prevent gel formation for months under the same conditions. The inhibition of gelation by CSA-Arg stems exclusively from the CSA moiety: CSA-Na was as effective as CSA-Arg, while Arg-HCl was marginally or not effective. The tested bulky salts did not inhibit (and indeed accelerated) temperature-induced gel formation in aqueous solutions of all examined carbohydrates-starch, agarose, alginate, gellan gum, and carrageenan.

Applied Biochemistry and Biotechnology 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, SDS of cas: 21286-54-4.

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