Category: benzodioxans

Electric Literature of 22013-33-8, New Advances in Chemical Research, May 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. In a document type is Article, and a compound is mentioned, 22013-33-8, Name is 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine, introducing its new discovery.

Herein, we developed an efficient and selective nickel-catalyzed monoalkylation of various primary alcohols with aryl and heteroaryl amines together with diols and amino alcohol derivatives. Notably, the catalytic protocol consisting of an earth-abundant and non-precious NiBr2/L1 system enables the transformations in the presence of hydroxyl, alkene, nitrile, and nitro functionalities. As a highlight, we have demonstrated the alkylation of diamine, intramolecular cyclization to N-heterocycles, and functionalization of complex vitamin E, an (±)-alpha-tocopherol derivative. Preliminary mechanistic studies revealed the participation of a benzylic C-H bond in the rate-determining step.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. Product Details of 3663-79-4, In a article, mentioned the application of 3663-79-4, Name is Methyl 1,4-Benzodioxane-2-carboxylate, molecular formula is C10H10O4

A general method for the regioselective solvent free Friedel-Crafts acylation of 2-substituted-1,4-benzodioxin derivatives in excellent yields employing the AlCl3-DMA reagent with acyl halides or anhydrides as acylating agents is described. The acylation of 2-substituted-1,4-benzodioxin derivatives provides the 6-acyl compound as the major product. However, the saturated analogs affords the 7-acyl regioisomer as the main compound.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. Quality Control of 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, In a article, mentioned the application of 214894-89-0, Name is 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, molecular formula is C9H9BrO2

The present invention relates to therapeutically active azacyclic or azabicyclic compounds, a method of preparing the same and to pharmaceutical compositions comprising the compounds. The novel compounds are useful in treating diseases in the central nervous system caused by malfunctioning of the muscarinic cholinergic system.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Reference of 2879-20-1, Research speed reading in 2021. The prevalence of solvent effects has motivated developing quantitative kinetic, and theoretical assessments of solvent structures and their interactions with reaction intermediates. In a document type is Article, and a compound is mentioned, 2879-20-1, Name is 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)ethanone, introducing its new discovery.

A series of both novel and reported combretastatin analogues, including diarylpyrazoles, -isoxazoles, -1,2,3-triazoles, and -pyrroles, were synthesized via improved protocols to evaluate their antimitotic antitubulin activity using in vivo sea urchin embryo assay and a panel of human cancer cells. A systematic comparative structure-activity relationship studies of these compounds were conducted. Pyrazoles 1i and 1p, isoxazole 3a, and triazole 7b were found to be the most potent antimitotics across all tested compounds causing cleavage alteration of the sea urchin embryo at 1, 0.25, 1, and 0.5 nM, respectively. These agents exhibited comparable cytotoxicity against human cancer cells. Structure-activity relationship studies revealed that compounds substituted with 3,4,5-trimethoxyphenyl ring A and 4-methoxyphenyl ring B displayed the highest activity. 3-Hydroxy group in the ring B was essential for the antiproliferative activity in the diarylisoxazole series, whereas it was not required for potency of diarylpyrazoles. Isoxazoles 3 with 3,4,5-trimethoxy-substituted ring A and 3-hydroxy-4-methoxy-substituted ring B were more active than the respective pyrazoles 1. Of the azoles substituted with the same set of other aryl pharmacophores, diarylpyrazoles 1, 4,5-diarylisoxazoles 3, and 4,5-diaryl-1,2,3-triazoles 7 displayed similar strongest antimitotic antitubulin effect followed by 3,4-diarylisoxazoles 5, 1,5-diaryl-1,2,3-triazoles 8, and pyrroles 10 that showed the lowest activity. Introduction of the amino group into the heterocyclic core decreased the antimitotic antitubulin effect of pyrazoles, triazoles, and to a lesser degree of 4,5-diarylisoxazoles, whereas potency of the respective 3,4-diarylisoxazoles was increased.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Synthetic Route of 22013-33-8,New Advances in Chemical Research in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis. 22013-33-8, Name is 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine,introducing its new discovery.

Two analogues of the discontinued tumor vascular-disrupting agent verubulin (Azixa, MPC-6827, 1) featuring benzo-1,4-dioxan-6-yl (compound 5 a) and N-methylindol-5-yl (compound 10) residues instead of the para-anisyl group on the 4-(methylamino)-2-methylquinazoline pharmacophore, were prepared and found to exceed the antitumor efficacy of the lead compound. They were antiproliferative with single-digit nanomolar IC50 values against a panel of nine tumor cell lines, while not affecting nonmalignant fibroblasts. Indole 10 surpassed verubulin in seven tumor cell lines including colon, breast, ovarian, and germ cell cancer cell lines. In line with docking studies indicating that compound 10 may bind the colchicine binding site of tubulin more tightly (Ebind=-9.8 kcal mol-1) than verubulin (E bind=-8.3 kcal mol-1), 10 suppressed the formation of vessel-like tubes in endothelial cells and destroyed the blood vessels in the chorioallantoic membrane of fertilized chicken eggs at nanomolar concentrations. When applied to nude mice bearing a highly vascularized 1411HP germ cell xenograft tumor, compound 10 displayed pronounced vascular-disrupting effects that led to hemorrhages and extensive central necrosis in the tumor. Variations on a promising theme: Tumor blood vessels are a good therapeutic target because they are fundamentally different from normal vasculature. This study shows that vascular-disrupting agents derived from verubulin have enhanced selectivity for cancer cells and lower general in vivo toxicity, yet they retain the strong antivascular activity of the lead compound.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Synthetic Route of 22013-33-8. You can get involved in discussing the latest developments in this exciting area about 22013-33-8

Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

New discoveries in chemical research and development in 2021. Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage. In a patent，Which mentioned a new discovery about Application In Synthesis of 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine, Application In Synthesis of 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine

An expedient and metal-free synthetic protocol for construction of substituted quinolines has been developed from anilines and phenylacetaldehydes using imidazolium cation-based ionic liquids as the reaction medium. Mechanistic analysis indicated that the reaction occurs through C-C and C-N bond formation to produce isolable 2,3-disubstituted quinoline intermediates, which undergo C-C bond cleavage to produce 3-substituted quinolines. The reaction proceeds smoothly with a range of functionalities in good to excellent yields. Advantages of this protocol include metal-free, environmentally friendly, recyclable reaction media, higher yields and shorter reaction times, and thus is promising for the efficient combinatorial synthesis of structurally diverse 2,3-disubstituted and 3-substituted quinolines.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 214894-89-0,name: 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, In a article, mentioned the application of 214894-89-0, molecular formula is C9H9BrO2

Alcohol synthesis is critical to the chemical and pharmaceutical industries. The addition of water across olefins to form primary alcohols (anti-Markovnikov olefin hydration) would be a broadly useful reaction but has largely proven elusive; an indirect hydroboration/oxidation sequence requiring stoichiometric borane and oxidant is currently the most practical methodology. Here, we report a more direct approach with the use of a triple relay catalysis system that couples palladium-catalyzed oxidation, acid-catalyzed hydrolysis, and ruthenium-catalyzed reduction cycles. Aryl-substituted terminal olefins are converted to primary alcohols by net reaction with water in good yield and excellent regioselectivity.

One of the oldest and most widely used commercial enzyme inhibitors is aspirin, name: 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 214894-89-0

Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Synthetic Route of 22013-33-8, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 22013-33-8, Name is 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine. In a Article, once mentioned of 22013-33-8.

Herein, we discovered a series of propynoic acid carbamoyl methyl-amides (PACMAs) with potent cytotoxicity against a panel of cancer cell lines. These compounds interrupted cell cycle progression at low micromolar concentrations and induced early and late stage apoptosis. A representative compound suppressed tumor growth without apparent toxicity in an MDA-MB-435 mouse xenograft model. We used a Kinexus 628-antibody microarray and the Ingenuity Pathway Analysis (IPA) bioinformatics tools to better understand their mechanisms. The IPA analysis revealed the initiation of Nrf2-mediated oxidative stress through modulating the expression of SOD1 and STIP1 by compound 1. The involvement of the oxidative stress pathway was further validated by measuring the levels of the PACMA-induced mitochondrial superoxide species. To our knowledge, this is the first report on the discovery and biological evaluations of PACMAs as anticancer agents. Their broad-spectrum in vitro cytotoxicity, possibly through an oxidative stress-mediated pathway, and in vivo efficacy warrant further preclinical investigations.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Synthetic Route of 39270-39-8, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 39270-39-8, Name is (2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)methanol. In a Article, once mentioned of 39270-39-8.

A series of novel IMB-070593 derivatives containing a substituted benzyloxime moiety and displaying a remarkable improvement in lipophilicity were synthesized and evaluated for their in vitro antimycobacterial and antibacterial activity. Our results reveal that the target compounds 19a-m have considerable Gram-positive activity (MIC: <0.008-32 mug/mL), although they are generally less active than the reference drugs against the Gram-negative strains. In particular, compounds 19h, 19j, 19k and 19m show good activity (MICs: <0.008-4 mug/mL) against all of the tested Gram-positive strains, including ciprofloxacin (CPFX)- and/or levofloxacin (LVFX)-resistant MSSA, MRSA and MSSE. Moreover, compound 19l (MIC: 0.125 mug/mL) is found to be 2-4 fold more active than the parent IMB070593, CPFX and LVFX against M. tuberculosis H37Rv ATCC 27294. Keep reading other articles of 39270-39-8! Don’t worry, you don’t need a PhD in chemistry to understand the explanations! Synthetic Route of 39270-39-8

Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 214894-89-0,category: benzodioxans, In a article, mentioned the application of 214894-89-0, molecular formula is C9H9BrO2

Inhibitors of NAALADase have shown promise for a variety of diseases associated with glutamate excitotoxicity, and could be useful for the diagnosis and therapy of prostate cancer. A series of novel enantiomerically pure 2-(phosphonomethyl)pentanedioic acid (2-PMPA) based NAALADase inhibitors were synthesized. These compounds were prepared from previously reported (S)-2-(hydroxyphosphinoylmethyl)pentanedioic acid benzyl ester 4. Biological test results showed that the new compounds are good to outstanding NAALADase inhibitors. Compounds 8b and 10b showed activity similar to the known potent inhibitor (S)-2-PMPA. Fluorescently labeled inhibitor 19b may potentially be used to study binding to prostate cancer cells by fluorescence microscopy, and siderophore-containing inhibitor 21b may be useful for detection of prostate-derived cancer cells by magnetic resonance imaging (MRI). This journal is The Royal Society of Chemistry.

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Reference：
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem