Tag: M.W:200-300

127-63-9, Name is Sulfonyldibenzene, molecular formula is C12H10O2S, belongs to isothiazole compound, is a common compound. In a patnet, author is Lipnicka, Urszula, once mentioned the new application about 127-63-9, Category: isothiazole.

SYNTHESIS AND IMMUNOMODULATORY ACTIVITES OF NEW 5-HYDRAZINO-3-METHYL-4-ISOTHIAZOLECARBOXYLIC ACID ETHYL ESTERS

Several new derivatives of 5-hydrazino-3-methyl-4-isothiazolecarboxylic ethyl esters were synthesized. Using 4-aminoacetophenone, the hydrazine group was transformed in position 5 in the hydrazone which reacted with the isocyanates, aldehydes and sugars. Thirteen newly synthesized compounds were tested for their ability to affects the immunological response in vitro in several rodent models. The immunoregulatory properties of the compounds were, differential and dose-dependent, The strongest activity was exhibited by 5-{N’-[1-4}-4-[3-(-methoxyphenyl)-ureido]-phenylethylidene]-hydrazino}-3-methyl-4-isothiazolecarboxylic acid ethyl ester (compound 3a). The compound strongly inhibited the secondary, humoral immune response to sheep erythrocytes and the proliferative response of mouse splenocytes to concanavalin A and pokeweed mitogen. The immunotropic activities of the new isothiazole derivatives and potential application of the compounds in therapy are discussed.

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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

Electric Literature of 3466-32-8, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 3466-32-8, Name is 1-Bromo-4-(methylsulfonyl)benzene, SMILES is O=S(C1=CC=C(Br)C=C1)(C)=O, belongs to isothiazole compound. In a article, author is OHKATA, K, introduce new discover of the category.

CONDENSATION OF 5-AMINOISOTHIAZOLES WITH N-METHYL-IMIDOYL CHLORIDE – RING-TRANSFORMATION WITH PARTICIPATION OF 10-S-3-TYPE SULFURANE

In the presence of 1,4-diazabicyclo[2.2.2]octane, 5-amino-3-methylisothiazole (4a) in acetonitrile condensed with N-methyl-p-chlorobenzimidoyl chloride (5a) to afford two kinds of compounds along with several minor products. One of the two was 1 : 1 condensed product (6a) and the other was 2 : 1 condensed product (7a). The latter compound was obtained in higher yield when an excess 4a was treated with 5a. On the other hand, in the absence of the additional base, 2 : 3 condensed compound (8a) was isolated as a major product besides 6a and 7a. 8a was obtained by treatment of 7a with 2 equiv. of imidoyl chloride in 21% yield. Reaction of 5-amino-3-phenylisothiazole (4b) with imidoyl chloride (5a,b) furnished the analogous products. On the other hand, condensation of 5-amino-3-phenylisoxazole (4c) with 5a furnished the oxygen analogue (6d) corresponding to 6b as a sole isolated product. The formation of 7 is explained by ring-transformation from isothiazole into thiadiazole via hypervalent 10-S-3 type sulfurane (B). According to a variety of investigations of heterocycles containing sulfur atom, it has been suggested that 10-S-3 type sulfurane is an important intermediate in several reactions.1,2. In a previous paper, we reported that a ring transformed thiadiazole derivative (1) instead of the expected isothiazole derivative (2) was isolated as a sole product in the reaction of 5-amino-3-methylisothiazole with arylnitrile.3a The fact was explained by invoking 10-S-3 sulfurane (A) as a intermediate. In connection with this finding, we describe in this paper results of the reaction of 5-aminoisoazole derivatives (4a-c) with imidoyl chloride (5a,b) under several conditions.

Electric Literature of 3466-32-8, 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 3466-32-8.

Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 4397-53-9, Name is 4-Benzyloxybenzaldehyde, molecular formula is C14H12O2. In an article, author is Ciez, Dariusz,once mentioned of 4397-53-9, Computed Properties of C14H12O2.

Enolates of 2-Isothiocyanatocarboxylic Esters: Synthesis of Thiazolo[5,4-d]-thiazole Derivatives and 2-Thioxo-1,3-thiazolidine-4-carboxylates

An oxidative dimerization of titanium(IV) enolates derived from menthyl esters of 2-isothiocarboxylic acids leads to radical coupling followed by cyclization. This cascade reaction gives thiazolo[5,4-d]thiazole derivatives as pure enantiomers. Under similar conditions, 2-methylbutyl esters of 2-isothiocyanatocarboxylic acids undergo intermolecular oxidative dimerization to give mixtures of thiazolo[5,4-d]thiazoles and 2,3-diisothiocyanatosuccinates. Application of the soft enolization technique to dimethyl alpha,alpha’-diisothiocyanatodicarboxylic esters gives novel cyclic 1,2-diisothiocyanato-1,2-dicarboxylates. Sodium enolates of 2-isothiocyanatocarboxylates, on the other hand, form 5-imino-2-thioxo-1,3-thiazolidine-4-carboxylic esters by nonoxidative dimerization. The mechanisms of the two reaction pathways are discussed.

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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 1775-95-7, Name is (2-Amino-5-nitrophenyl)(phenyl)methanone, SMILES is NC1=C(C=C(C=C1)[N+]([O-])=O)C(=O)C1=CC=CC=C1, belongs to isothiazole compound. In a document, author is Kletskov, A. V., introduce the new discover, Product Details of 1775-95-7.

Synthesis of New Ferrocene Derivatives with a 4,5-Dichloroisothiazole Fragment

Conjugates of ferrocene and 4,5-dichloroisothiazole were synthesized, where the ferrocene and isothiazole moieties are linked through various structural fragments. The acylation of ferrocene with 4,5-dichloroisothiazole-3-carbonyl chloride gave (4,5-dichloroisothiazol-3-yl) ferrocenyl ketone; the acylation of aminomethylferrocene furnished the corresponding amide. The esterification of ferrocene-1,1′-dicarboxylic acid with 4,5-dichloroisothiazol-3-yl-methanol resulted in the formation of the corresponding ester. The condensation of 1,1′-diacetylferrocene with 4,5-dichloroisothiazole-3-carbaldehyde afforded ferrocenophane containing 4,5-dichloroisothiazole moieties.

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 1775-95-7 is helpful to your research. Product Details of 1775-95-7.

Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 35271-74-0, Name is 3-(4-Chlorophenyl)pentanedioic acid, molecular formula is C11H11ClO4, belongs to isothiazole compound. In a document, author is SAUERBERG, P, introduce the new discover, Product Details of 35271-74-0.

SYNTHESIS AND STRUCTURE-ACTIVITY-RELATIONSHIPS OF HETEROCYCLIC-ANALOGS OF THE FUNCTIONAL M(1) SELECTIVE MUSCARINIC AGONIST HEXYLOXY-TZTP

Isothiazole (8a,b), isoxazole (14) and thiophene (19a,b) analogues of the potent, M1 selective muscarinic agonist, hexyloxy-TZTP, 1b, were synthesized and tested in vitro for muscarinic receptor affinity and M1 efficacy. All the analogues had lower affinity and efficacy at the M1 muscarinic receptors than 1b.

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 35271-74-0. Product Details of 35271-74-0.

Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. HPLC of Formula: C14H22N2O4, 61990-51-0, Name is 2-Hydroxy-N,N-dimethylpropan-1-aminium 4-acetamidobenzoate, SMILES is CC(O)C[NH+](C)C.O=C([O-])C1=CC=C(NC(C)=O)C=C1, in an article , author is Silva, Ana Dc Oliveira, once mentioned of 61990-51-0.

Recent Advances in the Synthesis and Reactivity of Isothiazoles

Isothiazoles represent an important class of five-membered sulfur heterocycles that are widely utilized in medicinal chemistry and organic synthesis due to the unique properties of two electronegative heteroatoms in a 1,2-relationship. However, in contrast to other 1,2-azoles, the facile assembly of isothiazoles has always been considered a substantial challenge. In the last decade, major advances have taken place in the fields of synthesis and functionalization of isothiazoles that make them accessible to a wide range of interested chemists through unprecedented pathways. New condensation methods have emerged that address the challenges posed by unstable thiohydroxylamine. New metal-catalyzed approaches have been reported that deliver densely decorated isothiazoles bearing various sensitive functional groups. New functionalization strategies have been developed through both cross-coupling and direct C-H activation chemistry. Finally, the emergence of novel heterocyclic architectures based on isothiazole opens the door for future investigations of this versatile heterocyclic scaffold. This review covers the period from January 2004 to December 2018 and is intended as a sequel to the review on isoxazoles, which represent another class of synthetically-important 1,2-azoles (see Adv. Synth. Catal. 2015, 357, 2583-2614).

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 61990-51-0, you can contact me at any time and look forward to more communication. HPLC of Formula: C14H22N2O4.

Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

Application of 28348-53-0, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 28348-53-0, Name is Sodium isopropylbenzenesulfonate, SMILES is NONE, belongs to isothiazole compound. In a article, author is Potkin, V. I., introduce new discover of the category.

Functional Derivatives of 4-Formyl-2-methoxyphenyl Pyridine-4-carboxylate

Acylation of vanillin with isonicotinoyl chloride gave 4-formyl-2-methoxyphenyl pyridine-4-carboxylate which was converted into a number of functional derivatives, including those containing isoxazole and isothiazole heterocycles. In particular, the condensation of the title compound with primary amines afforded the corresponding Schiff bases. 4-Formyl-2-methoxyphenyl pyridine-4-carboxylate and one of the Schiff bases derived therefrom were reduced with sodium triacetoxohydridoborate to the corresponding alcohol and amine which were acylated with 5-arylisoxazole- and 4,5-dichloroisothiazole-3-carbonyl chlorides to obtain esters and amides having isoxazole and isothiazole fragments. The synthesized compounds readily formed complexes with palladium(II) chloride, which showed a high catalytic activity in the Suzuki reaction of 3-bromobenzoic acid with 4-methoxyphenylboronic acid in water in the absence of an organic solvent.

Application of 28348-53-0, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 28348-53-0 is helpful to your research.

Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 93-97-0, Name is Benzoic anhydride, SMILES is O=C(OC(C1=CC=CC=C1)=O)C2=CC=CC=C2, in an article , author is Kuklish, Steven L., once mentioned of 93-97-0, Formula: C14H10O3.

Acid catalyzed nitrile thiolysis of 3-amino-acrylonitriles, toward the synthesis of 3,4-substituted-5-amino-isothiazoles

Application of an acid-catalyzed thioamidation of p-amino-acrylonitriles to the corresponding beta-amino-thioacrylamides toward the synthesis of 3,4-substituted-5-amino-isothiazoles is described. The greatest yields were observed for examples with electron rich aromatic systems. This method uses inexpensive and easily handled reagents. (C) 2015 Elsevier Ltd. All rights reserved.

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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 2307-69-9, Name is Isopropyl 4-methylbenzenesulfonate, SMILES is O=S(C1=CC=C(C)C=C1)(OC(C)C)=O, in an article , author is Abdel-Magid, Ahmed F., once mentioned of 2307-69-9, Application In Synthesis of Isopropyl 4-methylbenzenesulfonate.

The invention in this patent application relates to isothiazole and thiophene derivatives represented generally by formula (I), which are GPR120 agonists and may potentially be useful for the treatment of Type 2 diabetes mellitus, obesity, obesity-related disorders, impaired oral glucose tolerance, and insulin resistance. Statistics have shown that current drug therapies for Type 2 diabetes are lacking durable efficacy. More than half of patients on current oral medications fail to reach the targeted blood glucose control after 5 years of treatment. Thus, there is an urgent need for new drug therapies to treat Type 2 diabetes. Glucagon-like peptide-1 receptor (GLP-1) is a member of the glucagon receptor family of G protein-coupled receptors. It is a key regulator of glucose homeostasis, which is secreted by the L-cells in the colon following meals. It is an incretin hormone that potentiates insulin secretion, reduces glucagon secretion, preserves beta-cell function, and improves satiety. GLP-1 has been a therapeutic target for several of the recently approved Type 2 diabetes drugs including Januvia (Merck) and Galvus (Novartis), which act by prolonging the half-life of GLP-1, and Byetta (Amylin), which acts by activating the GLP-1 receptor. The complex pathology of free fatty acids (FFAs) plays a key role in the progression of diabetes. While the acute exposure of FFAs in the pancreas and the colon stimulates glucose-dependent insulin secretion and GLP-1 release, chronic exposure of FFAs impairs insulin secretion and becomes toxic to beta-cells. The accumulation of FFAs in insulin responsive tissues such as muscles and liver causes tissue insulin resistance. Hyperinsulinemia in the liver has been linked to increased accumulation of fatty acids and hepatic glucose output, which cause impaired insulin resistance and create a vicious cycle of disease progression. Currently available Type 2 diabetes drugs can only treat some of the damaging effects of FFAs on the progression of diabetes. Therefore, researchers are aiming to develop effective new therapies that can address all or most of these effects to efficiently potentiate the release of GLP-1, significantly improve blood glucose control, maintain beta-cells function, and may additionally be capable of treating obesity. G-protein coupled receptor 120 (GPR120) is a member of the rhodopsin family of G protein-coupled receptors (GPCRs), which also includes GPR40, GPR41, and GPR43. GPR120 is expressed predominantly in the intestine and adipose tissue and functions as a receptor for long chain FFAs. It is activated by unsaturated long chain FFAs, which stimulate the secretion of GLP-1. It is believed that GPR120 signaling activates Ca2+ flux as well as protein kinase C (PKC), which may explain how FFAs contribute to the release of GLP-1 in the L-cells. While GPR120 is not yet very well studied, available data suggest that GPR120 agonists would potentiate insulin secretion and reduce glucagon indirectly via GLP-1 release. The beneficial effects of elevating GLP-1 levels are already well documented in clinical studies. Thus, GPR120 presents a potentially viable therapeutic target to develop novel treatments for Type 2 diabetes, obesity, and insulin resistance. GPR120 agonists such as the compounds described in this patent application may be effective in improving glucose homeostasis and can potentially treat obesity. They might additionally act as complementary treatments to existing diabetes therapies that affect liver insulin sensitivity and those that preserve beta-cells function.

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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com

 

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 18621-17-5, Name is 1-Benzhydrylazetidin-3-ol, SMILES is C3=C(C(N1CC(O)C1)C2=CC=CC=C2)C=CC=C3, in an article , author is Nadirova, Maryana A., once mentioned of 18621-17-5, Application In Synthesis of 1-Benzhydrylazetidin-3-ol.

It was found that the reaction of 5-arylfurfurilamines with maleic anhydride leads to the formation of 6-aryl-3a,6-epoxyisoindole-7-carboxylic acids (the cyclic form), which in solution are in dynamic equilibrium with N-furfurylmaleinamides (the open form). During the esterification of these tautomeric mixtures with methanol in the presence of a catalytic amount of sulfuric acid, methyl esters of 5-aryl-7a-hydroxy-7-methoxy-3-oxo-2,3,3a,4,7,7a-hexahydro-1H-isoindole-4-carboxylic acids, unexpected cleavage products of the 3a,6-oxo bridge of the cyclic form, are formed diastereospecifically. The structure of the obtained products was confirmed by X-ray structural analysis.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 18621-17-5, you can contact me at any time and look forward to more communication. Application In Synthesis of 1-Benzhydrylazetidin-3-ol.

Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com