Author: Jessica.F

Related Products of 87-48-9, Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 87-48-9, Name is 5-Bromoindoline-2,3-dione, SMILES is O=C1NC2=C(C=C(Br)C=C2)C1=O, belongs to indolines-derivatives compound. In a article, author is Pugachev, Artem D., introduce new discover of the category.

Visible to near-IR molecular switches based on photochromic indoline spiropyrans with a conjugated cationic fragment

Photochromic molecules which can absorb and emit light within the biological window (650-1450 nm) are of great interest for using in various important biomedical applications such as bio-imaging, photopharmacology, targeted drug delivery, etc. Here we present three new indoline spiropyrans containing conjugated cationic fragments and halogen substituents in the 2H-chromene moiety which were synthesized by a simple one-pot method. The molecular structure of the obtained compounds was confirmed by IT-IR, H-1 and C-13 NMR spectroscopy (including 2D methods), HRMS, elemental and single crystal X-ray analysis. Photochemical studies revealed the photochromicactivity of spiropyrans at room temperature which caused photoswitchable fluorescence in the near-IR region after UV-irradiation. While the spirocyclic forms of compounds demonstrated absorption bands in the UV-Vis spectra with maxima in the visible region at about 445 nm and were not fluorescent, the photogenerated merocyanine isomers absorbed in the near-IR range at 708-738 nm and emitted at 768-791 nm. It was found that compound la with fluorine substituent possesses the most red-shifted absorption and emission bands of merocyanine form among all the known photochromic spiropyrans with maxima at 738 and 791 nm correspondingly. TD DFT calculations have shown that the longest wavelength absorption maxima of the merocyanine forms correspond to S-0-S-1 transitions of the isomers with at least one trans-trans-trans-configured vinyl indolium fragment which brings them doser to cya nine-like structure and causes an appearance of the absorption and emission bands in the near-IR region. (C) 2020 Elsevier B.V. All rights reserved.

Related Products of 87-48-9, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 87-48-9 is helpful to your research.

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 88150-75-8, Name is Ethyl 4-(2-(1,3-dioxoisoindolin-2-yl)ethoxy)-3-oxobutanoate, SMILES is O=C(OCC)CC(COCCN(C(C1=C2C=CC=C1)=O)C2=O)=O, in an article , author is Shen, Bowen, once mentioned of 88150-75-8, Product Details of 88150-75-8.

Effect of Structure and Intramolecular Distances on Photoswitchable Magnetic Resonance Imaging Contrast Agents

Light-activated sensors are of great interest for biological applications but are limited by the depth of penetration of light. We have been interested in transducing light activation to a magnetic signal that can be detected through noninvasive imaging by magnetic resonance imaging (MRI). We have previously developed agents incorporating spiropyran derivatives as the sensing moiety and characterized features that influence photoswitching; however, we found the MRI response to be unpredictable. In this work, we delve deeper into the potential mechanisms for the observed MRI responses in an effort to better understand the structural effects on controlling magnetic properties. A series of light-activatable MRI contrast agents were synthesized and characterized to assess the effect of spiropyran positioning on contrast agent functions and properties. These compounds are based on the same spiropyran skeleton, also named 1′,3′,3′-trimethyl-6-nitrospiro[chromene-2,2-indoline], which is linked with an MRI contrast agent, gadolinium-1,4,7,10-tetraazacyclododecane-1,4,7-triacetate (DO3A). We investigated the photo-to-magnetic conversion properties of these novel compounds by adjusting linker lengths over a range from three to seven methylene groups. The primary results indicated that the contrast agent with a five-carbon linker (25) showed the highest light-sensing ability after irradiation with visible light. The results will aid in the design of future spiropyran-based MRI sensors.

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Synthetic Route of 550-44-7, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 550-44-7, Name is 2-Methylisoindoline-1,3-dione, SMILES is CN1C(=O)C2=C(C=CC=C2)C1=O, belongs to indolines-derivatives compound. In a article, author is Hua, Ting-Bi, introduce new discover of the category.

Recent advances in asymmetric synthesis of 2-substituted indoline derivatives

Enantiomerically pure 2-substituted indolines are an important class of nitrogen heterocycles that occur frequently in many alkaloid natural products and biologically active compounds. Consequently, the synthesis of such skeletons is of great significance. The past years have witnessed a number of remarkable advances in the development of efficient strategies to construct this class of chiral compounds. This review summarizes the recent advances in asymmetric synthesis of 2-substituted indoline derivatives. Due to the limitation of the length, this review only summarizes those works published from January of 2012 to January of 2019. Meanwhile, methods towards synthesis of fused and spirocyclic indolines will not be discussed in this review. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

Synthetic Route of 550-44-7, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 550-44-7.

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Category: indolines-derivatives, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 88150-75-8, Name is Ethyl 4-(2-(1,3-dioxoisoindolin-2-yl)ethoxy)-3-oxobutanoate, molecular formula is C16H17NO6. In an article, author is Guerrero-Rubio, M. Alejandra,once mentioned of 88150-75-8.

Betalain health-promoting effects after ingestion in Caenorhabditis elegans are mediated by DAF-16/FOXO and SKN-1/Nrf2 transcription factors

Betalain-rich extracts have been used for many years by their nutraceutical potential. However, the study of their bioactivities has always been hampered by their difficult obtention. To explain their mode of action, seventeen pure betalains were tested in vivo using the animal model C. elegans. Four betalains, named indicaxanthin, indoline carboxylic acid-betacyanin, phenylalanine-betaxanthin, and dopaxanthin, behaved as extraordinary in vivo antioxidants and anti-aging compounds, by increasing the lifespan of C. elegans up to 16.82%, 16.65%, 16.53%, and 12.93%, respectively. The first microarrays performed with betalains and biological confirmation with different mutant strains showed that this life extension is due to a reduction of oxidative stress and the activation of the transcription factors DAF-16/FOXO and SKN-1/Nrf2. They are involved in longevity and oxi-dative stress resistance pathways and lead to overexpression of HSPs genes, involved in resistance to cancer and Alzheimer’s, opening novel research lines in the search for effective plant-based treatments.

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One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 56341-37-8, Name is 6-Chlorooxindole, formurla is C8H6ClNO. In a document, author is Sheryn, Wong, introducing its new discovery. Category: indolines-derivatives.

In-vitro cytotoxicity of synthesized phthalide-fused indoles and indolines against HL-60 and HepG2 cells

Phthalide derivatives bearing indole or indoline moieties were successfully synthesized via eco-friendly method and were evaluated for their antiproliferative activity on HL-60 and HepG2 cell lines in vitro. At a final concentration of 100 mu M, most of the compounds showed moderate potency on both the cell lines tested. Compound 3b bearing 5-chloro substituted indoline had the best potency against HL-60 and HepG2 cell lines with IC50 values of 45.4 and 57.7 mu M, respectively. It was also found that replacement of a conjugated indoline to indole moiety gave better antiproliferative activity on HL-60 cells by almost two-fold. Morphological observation demonstrated numerous fragmented nuclei which are indicative of apoptosis. Molecular docking studies predicted non-covalent interactions and H-bonding of selected compounds with the P2 binding hot spot of the anti-apoptotic protein, Bcl-2, formed by Asp108, Phe109, Met112, Leu134, Arg143, Ala146 and Val153. Overall, our work highlights the potential of synthesized phthalide-fused indoles or indolines as antitumor agents. (C) 2019 Production and hosting by Elsevier B.V. on behalf of King Saud University.

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Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 59-48-3, Name is Indolin-2-one, SMILES is O=C1NC2=C(C=CC=C2)C1, belongs to indolines-derivatives compound. In a document, author is Zhu, Meijun, introduce the new discover, Recommanded Product: 59-48-3.

1,3-Dipolar cycloaddition for selective synthesis of functionalized spiro[indoline-3,3 ‘-pyrrolizines]

The 1,3-dipolar cycloaddition reaction of dimethyl hex-2-en-4-ynedioate with azomethine ylides derived from reaction of L-proline with various isatins in methanol selectively resulted in the formation of functionalized spiro[indoline-3,30-pyrrolizine]acrylates as main products and spiro[indoline-3,3’-pyrrolizine]propiolates as minor products. This result indicated that the electron-deficient alkyne has higher reactivity than that of electron-deficient alkene in 1,3-dipolar cycloaddition reaction. (c) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 59-48-3 is helpful to your research. Recommanded Product: 59-48-3.

Reference of 56341-37-8, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 56341-37-8, Name is 6-Chlorooxindole, SMILES is O=C1NC2=C(C=CC(Cl)=C2)C1, belongs to indolines-derivatives compound. In a article, author is Hu, Kangfei, introduce new discover of the category.

Iodine-Mediated Electrochemical C(sp(2))-H Amination: Switchable Synthesis of Indolines and Indoles

A metal-free electrochemical intramolecular C(sp(2))-H amination using iodine as a mediator was developed. This method enables a switchable synthesis of indoline and indole derivatives, respectively, from easily available 2-vinyl anilines.

Reference of 56341-37-8, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 56341-37-8.

Chemistry is an experimental science, Recommanded Product: 6-Bromoindolin-2-one, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 99365-40-9, Name is 6-Bromoindolin-2-one, molecular formula is C8H6BrNO, belongs to indolines-derivatives compound. In a document, author is Najafizadeh, Faranak.

A derivatization-directed three-component synthesis of fluorescent spiro [dihydropyridine-4,3MODIFIER LETTER PRIME-indoline]s

The synthesis of spiro[chromeno[4,3-b]pyrazolo[4,3-e]pyridine-7,3MODIFIER LETTER PRIME-indoline]s is achievedviathree-component reactions of 5-amino-3-methylpyrazole, 4-aminocoumarin, and isatin derivatives. This protocol provides expedient synthesis of 10-unsubstituted derivatives of the parent heterocyclic spiro framework and does not lead to coumarin ring opening. The synthesis is highly convergent as no by-products are present in the reaction mixtures. The spiro products show violet fluorescence emissions depending on the nature of their substituents.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 99365-40-9, in my other articles. Recommanded Product: 6-Bromoindolin-2-one.

Let¡¯s face it, organic chemistry can seem difficult to learn, Product Details of 59-48-3, Especially from a beginner¡¯s point of view. Like 59-48-3, Name is Indolin-2-one, molecular formula is C4H6O3, belongs to copper-catalyst compound. In a document, author is Permyakova, Anna, introducing its new discovery.

A Novel Indoline Derivative Ameliorates Diabesity-Induced Chronic Kidney Disease by Reducing Metabolic Abnormalities

Both diabetes and obesity (diabesity) contribute significantly to the development of chronic kidney disease (CKD). In search of new remedies to reverse or arrest the progression of CKD, we examined the therapeutic potential of a novel compound, AN1284, in a mouse model of CKD induced by type 2 diabetes with obesity. Six-week-old BKS Cg-Dock 7(m)+/+ Lepr(db)/J mice with type 2 diabetes and obesity were treated with AN1284 (2.5 or 5 mg kg(-1) per day) via micro-osmotic pumps implanted subcutaneously for 3 months. Measures included renal, pancreatic, and liver assessment as well as energy utilization. AN1284 improved kidney function in BSK-db/db animals by reducing albumin and creatinine and preventing renal inflammation and morphological changes. The treatment was associated with weight loss, decreased body fat mass, increased utilization of body fat toward energy, preservation of insulin sensitivity and pancreatic beta cell mass, and reduction of dyslipidemia, hepatic steatosis, and liver injury. This indoline derivative protected the kidney from the deleterious effects of hyperglycemia by ameliorating the metabolic abnormalities of diabetes. It could have therapeutic potential for preventing CKD in human subjects with diabesity.

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Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.99365-40-9, Name is 6-Bromoindolin-2-one, SMILES is O=C1NC2=C(C=CC(Br)=C2)C1, belongs to indolines-derivatives compound. In a document, author is Sagnou, Marina, introduce the new discover, Recommanded Product: 99365-40-9.

Novel Isatin Thiosemicarbazone Derivatives as Potent Inhibitors of beta-Amyloid Peptide Aggregation and Toxicity

Inhibition of beta-amyloid peptide (A beta) aggregation in Alzheimer’s disease (AD) is among the therapeutic approaches against AD which still attracts scientific research interest. In the search for compounds that interact with A beta and disrupt its typical aggregation course toward oligomeric or polymeric toxic assemblies, small organic molecules of natural origin, combining low molecular weight (necessary blood-brain barrier penetration) and low toxicity (necessary for pharmacological application), are greatly sought after. Isatin (1H-indoline-2,3-dione), a natural endogenous indole, and many of its derivatives exhibit a wide spectrum of neuropharmacological and chemotherapeutic properties. The synthesis and biological evaluation of four new isatins as inhibitors of A beta aggregation is presented herein. In these derivatives, the N-phenyl thiosemicarbazide moiety is joined at the 3-oxo position of isatin through Schiff base formation, and substitutions are present at the indole nitrogen and position 5 of the isatin core. Biophysical studies employing circular dichroism, thioflavin T fluorescence assay, and transmission electron microscopy reveal the potential of the isatin thiosemicarbazones (ITSCs) to alter the course of A beta aggregation, with two of the derivatives exhibiting outstanding inhibition of the aggregation process, preventing completely the formation of amyloid fibrils. Furthermore, in in vitro studies in primary neuronal cell cultures, the ITSCs were found to inhibit the A beta-induced neurotoxicity and reactive oxygen species production at concentrations as low as 1 mu M. Taken all together, the novel ITSCs can be considered as privileged structures for further development as potential AD therapeutics.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 99365-40-9 is helpful to your research. Recommanded Product: 99365-40-9.