Day: March 29, 2021

Reference of 75-98-9, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 75-98-9, Name is Pivalic acid, SMILES is CC(C)(C)C(O)=O, belongs to Benzisoxazole compound. In a article, author is Bode, JW, introduce new discover of the category.

Isoxazole -> benzisoxazole rearrangement promoted cascade reactions affording stereodefined polycycles

[GRAPHICS] A new chemo-, regio-, and stereoselective cascade reaction features a novel isoxazole –> benzisoxazole rearrangement and affords highly functionalized, differentially protected compounds. The products of this reaction are directly converted to a number of complex, structurally diverse polycyclic molecules. These transformations highlight the unique chemistry inherent to readily prepared fused isoxazoles.

Reference of 75-98-9, 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 75-98-9 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

In an article, author is Deering, Robert W., once mentioned the application of 427-49-6, HPLC of Formula: C13H16O3, Name is alpha-Cyclopentylmandelic Acid, molecular formula is C13H16O3, molecular weight is 220.2643, MDL number is MFCD00019296, category is Benzisoxazole. Now introduce a scientific discovery about this category.

Identification of a bacteria-produced benzisoxazole with antibiotic activity against multi-drug resistant Acinetobacter baumannii

The emergence of multi-drug resistant pathogenic bacteria represents a serious and growing threat to national healthcare systems. Most pressing is an immediate need for the development of novel antibacterial agents to treat Gram-negative multi-drug resistant infections, including the opportunistic, hospital-derived pathogen, Acinetobacter baumannii. Herein we report a naturally occurring 1,2-benzisoxazole with minimum inhibitory concentrations as low as 6.25 mu g ml(-1) against clinical strains of multi-drug resistant A. baumannii and investigate its possible mechanisms of action. This molecule represents a new chemotype for antibacterial agents against A. baumannii and is easily accessed in two steps via de novo synthesis. In vitro testing of structural analogs suggest that the natural compound may already be optimized for activity against this pathogen. Our results demonstrate that supplementation of 4-hydroxybenzoate in minimal media was able to reverse 1,2-benzisoxazole’s antibacterial effects in A. baumannii. A search of metabolic pathways involving 4-hydroxybenzoate coupled with molecular modeling studies implicates two enzymes, chorismate pyruvate-lyase and 4-hydroxybenzoate octaprenyltransferase, as promising leads for the target of 3,6-dihydroxy-1,2-benzisoxazole.

If you are interested in 427-49-6, you can contact me at any time and look forward to more communication. HPLC of Formula: C13H16O3.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 6106-21-4, Name is Sodium succinate hexahydrate, molecular formula is C4H16Na2O10. In an article, author is Guo, Sheng,once mentioned of 6106-21-4, Name: Sodium succinate hexahydrate.

A Practical Electrophilic Nitrogen Source for the Synthesis of Chiral Primary Amines by Copper-Catalyzed Hydroamination

A mild and practical method for the catalytic installation of the amino group across alkenes and alkynes has long been recognized as a significant challenge in synthetic chemistry. As the direct hydroamination of olefins using ammonia requires harsh conditions, the development of suitable electrophilic aminating reagents for formal hydroamination methods is of importance. Herein, we describe the use of 1,2-benzisoxazole as a practical electrophilic primary amine source. Using this heterocycle as a new amino group delivery agent, a mild and general protocol for the copper-hydride-catalyzed hydroamination of alkenes and alkynes to form primary amines was developed. This method provides access to a broad range of chiral alpha-branched primary amines and linear primary amines, as demonstrated by the efficient synthesis of the antiretroviral drug maraviroc and the formal synthesis of several other pharmaceutical agents.

If you¡¯re interested in learning more about 6106-21-4. The above is the message from the blog manager. Name: Sodium succinate hexahydrate.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 99-14-9, Name is Propane-1,2,3-tricarboxylic acid, molecular formula is C6H8O6, belongs to Benzisoxazole compound. In a document, author is Newsome, Jeffery J., introduce the new discover, Computed Properties of C6H8O6.

Benzofuran-, benzothiophene-, indazole- and benzisoxazole-quinones: Excellent substrates for NAD(P)H:quinone oxidoreductase 1

A series of heterocyclic quinones based on benzofuran, benzothiophene, indazole and benzisoxazole has been synthesized, and evaluated for their ability to function as substrates for recombinant human NAD(P)H:quinone oxidoreductase (NQO1), a two-electron reductase upregulated in tumor cells. Overall, the quinones are excellent substrates for NQO1, approaching the reduction rates observed for menadione. (C) 2013 Elsevier Ltd. All rights reserved.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 99-14-9. Computed Properties of C6H8O6.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

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. 3878-55-5, Name is 4-Methoxy-4-oxobutanoic acid, formurla is C5H8O4. In a document, author is Huang Hao, introducing its new discovery. Recommanded Product: 4-Methoxy-4-oxobutanoic acid.

Copper-Catalyzed Enantioselective Aminoboration of Styrenes with 1,2-Benzisoxazole as Nitrogen Source

Organoboron compounds are important intermediates in organic synthesis because of their high utilities for C-C and C-X bond formations. Transition metal-catalyzed borylative difunctionalization of alkenes, which can simultaneously introduce C-B, C-C or C-X bonds, could directly construct highly functionalized organoboron in one step. Among these reactions, copper catalyzed enantioselective aminoboration of styrenes is an efficient approach to generate enantioriched beta-aminoboronate which is a class of useful chiral compounds. In this work, employing styrenes as substrates, 1,2-berrzisoxazole as an electrophilic primary amine source, bis(pinacolato)diboron (B(2)pin(2)) as boron source and LiOCH3 as base, an enantioselective Cu-catalyzed aminoboration of styrenes by using a chiral sulfoxide-phosphine (SOP) ligand was developed, and a board range of chiral beta-aminoalkylboranes, which could be readily converted to a class of valuable beta-hydroxylalkylamines, were accessed with high yields and ee values. A general procedure for this aminoboration of styrenes is described in the following: in a glove box, CuI (0.05 mmol), chiral sulfoxide phosphine ligand L1 (0.06 mmol), and 2 mL of anhydrous tetrahvdrofuran were added into a flame-dried tube. The resulting mixture was stirred at room temperature for 30 min. then bis(pinacolato)diboron (B(2)pin(2)) (0.75 mmol), LiOCH3 (1.25 mmol), styrene 1 (0.5 nunol), 1,2-benzisoxazole (0.75 mmol) and another 2 mL of THE were added into the reaction system in sequence. The reaction tube was removed out from the glove box and stirred at 20 degrees C for 12 h. After the reaction was finished, the NMR yield was firstly determined with dimethyl terephthalate (9.7 mg, 0.05 mmol) as internal standard, then, the crude product was recovered and purified with a preparative TLC which was alkalized with triethylamine to give the desired beta-aminoboronates in moderate to good yields (47%similar to 84%) and enantioselectivities (81%similar to 99%). To demonstrate the utility of this reaction, beta-boronate primary amine could be easily obtained by removing the Schiff base group of beta-aminoboronate 3 under the methanol solution of hydroxylamine hydrochloride, which could be further oxidized to give corresponding chiral beta-amino alcohol in moderate yield (48%).

If you are hungry for even more, make sure to check my other article about 3878-55-5, Recommanded Product: 4-Methoxy-4-oxobutanoic acid.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Recommanded Product: 25383-99-7, 25383-99-7, Name is Sodium 2-((2-(stearoyloxy)propanoyl)oxy)propanoate, SMILES is O=C(C(C)OC(CCCCCCCCCCCCCCCCC)=O)OC(C)C([O-])=O.[Na+], in an article , author is White, HS, once mentioned of 25383-99-7.

Correlation between anticonvulsant activity and inhibitory action on glial gamma-aminobutyric acid uptake of the highly selective mouse gamma-aminobutyric acid transporter 1 inhibitor 3-hydroxy-4-amino-4,5,6,7-tetrahydro-1,2-benzisoxazole and its N-alkylated analogs

The inhibitory effect of 3-hydroxy-4-amino-4,5,6,7-tetrahydro1,2-benzisoxazole (exo-THPO) and its N-methylated (N-methylexo-THPO) and N-ethylated (N-ethyl-exo-THPO) analogs, derived from gamma-aminobutyric acid (GABA) and 4,5,6,7-tetrahydroisoxazolo[4,5-c]pyridin-3-ol (THPO) on GABA transport was investigated using cultured neocortical neurons (GABAergic) and astrocytes and cloned mouse GABA transporters GAT1-4 expressed in human embryonic kidney (HEK) 293 cells. Anticonvulsant activity was assessed after i.c.v. administration to Frings audiogenic seizure-susceptible mice. Anticonvulsant activity of the O-pivaloyloxymethyl prodrug of N-methyl-exo-THPO was assessed after i.p. administration. Results from these studies were compared with those obtained from similar studies with the novel anticonvulsant drug tiagabine, which acts via inhibition of GABA transport. exo-THPO and its N-alkyl analogs inhibited neuronal, astrocytic, and GAT1-mediated GABA transport but not GABA uptake mediated by GAT2-4. N-Methyl-exo-THPO was 8-fold more potent as an inhibitor of astrocytic versus neuronal GABA uptake. The IC50 value for inhibition of GABA uptake by GAT1 closely reflected its IC50 value for inhibition of neuronal uptake. Tiagabine was approximately 1000-fold more potent than exoTHPO and its alkyl derivatives as an inhibitor of GABA uptake in cultured neural cells and GAT1-expressing HEK 293 cells. exoTHPO, its alkylated analogs, and tiagabine displayed a time- and dose-dependent inhibition of audiogenic seizures after i.c.v. administration. N-Methyl-exo-THPO was the most potent anticonvulsant among the exo-THPO compounds tested and only slightly less potent than tiagabine. The findings suggest a correlation between anticonvulsant efficacy and selective inhibition of astroglial GABA uptake. Furthermore, results obtained with the N-methyl-exo-THPO prodrug demonstrate the feasibility of developing a glial-selective GABA uptake inhibitor with systemic bioavailability.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 25383-99-7, you can contact me at any time and look forward to more communication. Recommanded Product: 25383-99-7.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Application of 503-66-2, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 503-66-2, Name is 3-Hydroxypropionic Acid (contains varying amounts of 3,3-Oxydipropionic Acid), SMILES is O=C(O)CCO, belongs to Benzisoxazole compound. In a article, author is Aitipamula, Srinivasulu, introduce new discover of the category.

Cocrystals of zonisamide: physicochemical characterization and sustained release solid forms

We report four cocrystals of the antiepileptic drug, zonisamide (ZNS), which encounters half-life fluctuation when administered adjunctly with other antiepileptic drugs. Single crystals for two of the novel cocrystals of ZNS were successfully prepared from solvent evaporation experiments and their crystal structures were determined. Pharmaceutically acceptable cocrystals were analyzed for their dissolution rate, solubility and stability to draw conclusions on the impact of cocrystallization on the physicochemical properties of ZNS. It was found that the cocrystals showed lower solubility and dissolution rates and offer potential benefits in the development of sustained release formulations of ZNS which could address issues regarding its half-life fluctuation. Recent attempts to explore newer therapeutic applications have suggested ZNS as a potential drug for weight loss management. In this regard, the cocrystal of ZNS with caffeine, which has also been used in weight loss management, promises potential applications in the development of a novel fixed-dose combination drug which could offer synergistic therapeutic benefits in the treatment of obesity.

Application of 503-66-2, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 503-66-2 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Reference of 18996-35-5, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 18996-35-5, Name is Sodium 3,4-dicarboxy-3-hydroxybutanoate, SMILES is OC(C(O)=O)(CC([O-])=O)CC(O)=O.[Na+], belongs to Benzisoxazole compound. In a article, author is Guo, Jian, introduce new discover of the category.

Absorption, distribution, metabolism and elimination of 14C-ETX0914, a novel inhibitor of bacterial type-II topoisomerases in rodents

1. ETX0914 is a novel bacterial topoisomerase inhibitor that has a novel mode-of-inhibition and is in clinical development for the treatment of infections caused by Neisseria gonorrhoeae. 2. The in vitro biotransformation studies of ETX0914 using mouse, rat, dog and human hepatocytes showed moderate intrinsic clearance in mouse and rat and low intrinsic clearance in dog and human. 3. Following intravenous administration of [C-14]-ETX0914 in rats, the mean recovery of administered dose in urine, bile and feces was approximately 15%, 55% and 24%, respectively. Unchanged ETX0914 recovered in urine and bile was less than 5% of the dose, indicating that ETX0914 underwent extensive metabolism in rats. Metabolites M1, M2, M4, M6 and M12 detected in both rat and mouse urine samples were not detected in mouse urine when predosed with 1-aminobenzotriazole, indicating that these metabolites were cytochrome P450 mediated products. The major fecal metabolites observed in rats were not formed when ETX0914 was incubated with fresh feces from germ free rats under sterile condition or in incubations with rat intestinal microsome and cytosol, suggesting that most likely ETX0914 was directly excreted into gut lumen where metabolites were formed as intestinal microflora-mediated products. The major sites of metabolism by CYP enzymes were in the morpholine and oxazolidinone rings while it was benzisoxazole reduction with the gut microflora.

Reference of 18996-35-5, 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 18996-35-5 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

In an article, author is Cvetovich, RJ, once mentioned the application of 90-27-7, Safety of 2-Phenylbutanoic acid, Name is 2-Phenylbutanoic acid, molecular formula is C10H12O2, molecular weight is 164.2011, MDL number is MFCD00002667, category is Benzisoxazole. Now introduce a scientific discovery about this category.

An efficient synthesis of a dual PPAR alpha/gamma agonist and the formation of a sterically congested alpha-aryloxyisobutyric acid via a Bargellini reaction

A practical synthesis of benzisoxazole 1 and its conversion to alpha-aryloxyisobutyric acid 2 using 1,1,1-trichloro-2-methyl-2-propanol (chloretone) was developed. Benzisoxazole I was formed in high yields by the action of either methanesulfonyl chloride/base upon intermediate oxime 8 or with thionyl chloride/base, which initially forms cyclic sulfite 10. A highly reactive, short-lived intermediate derived from chloretone was detected by ReacIR and its half-life determined to be similar to 5 min. Reaction conditions for the Bargellini reaction were developed that resulted in a 95% yield of 2 from the reaction of highly hindered phenol 1 with chloretone hemihydrate and powdered NaOH in acetone. Thus highly hindered alpha-aryloxyisobutyric acids can be made in a single step in high yield.

If you are interested in 90-27-7, you can contact me at any time and look forward to more communication. Safety of 2-Phenylbutanoic acid.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Electric Literature of 135236-72-5, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 135236-72-5, Name is Calcium 3-hydroxy-3-methylbutanoate, SMILES is CC(C)(O)CC([O-])=O.CC(C)(O)CC([O-])=O.[Ca+2], belongs to Benzisoxazole compound. In a article, author is Akbar, Sikkandarkani, introduce new discover of the category.

A Tandem Strategy for the Synthesis of 1H-Benzo[g]indazoles and Naphtho[2,1-d]isoxazoles from o-Alkynylarene Chalcones

o-Alkynylarene chalcones when treated with hydrazines and hydroxylamine in the presence of iodine gave 1H-benzo[g]indazoles and naphtho[2,1-d]isoxazoles, respectively. The transformations involve tandem oxidative cyclocondensation/electrophilic hydroarylation. The methodology was applied to quinoline-based chalcones, which also afforded the corresponding quinoline-fused benzindazole and benzisoxazole.

Electric Literature of 135236-72-5, 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 135236-72-5 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics