Heterocyclic Building Block-benzofuran

An article Characterization of melanin and optimal conditions for pigment production by an endophytic fungus, Spissiomyces endophytica SDBR-CMU319 WOS:000521167700001 published article about NATURAL MELANIN; HUMIC ACIDS; BIOSYNTHESIS; IDENTIFICATION; OPTIMIZATION; METABOLITES; POLYMERS; SPECTRA; CULTURE in [Suwannarach, Nakarin; Kumla, Jaturong; Lumyong, Saisamorn] Chiang Mai Univ, Dept Biol, Fac Sci, Chiang Mai, Thailand; [Suwannarach, Nakarin; Kumla, Jaturong; Lumyong, Saisamorn] Chiang Mai Univ, Ctr Excellence Microbial Divers & Sustainable Uti, Chiang Mai, Thailand; [Watanabe, Bunta] Kyoto Univ, Inst Chem Res, Kyoto, Japan; [Matsui, Kenji] Yamaguchi Univ, Grad Sch Sci & Technol Innovat Agr, Yamaguchi, Japan; [Lumyong, Saisamorn] Royal Soc Thailand, Acad Sci, Bangkok, Thailand in 2019, Cited 61. Quality Control of Isobenzofuran-1(3H)-one. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2

Melanin is a natural pigment that is produced by filamentous fungi. In this study, the endophytic species, Spissiomyces endophytica (strain SDBR-CMU319), produced a brownblack pigment in the mycelia. Consequently, the pigment was extracted from the dried fungal biomass. This was followed by pigment purification, characterization and identification. Physical and chemical characteristics of the pigment showed acid precipitation, alkali solubilization, decolorization with oxidizing agents, and insolubility in most organic solvents and water. The pigment was confirmed as melanin based on ultraviolet-visible spectroscopy, Fourier-transform infrared, and electron paramagnetic resonance spectra analyses. The analyses of the elemental composition indicated that the pigment possessed a low percentage of nitrogen, and therefore, was not 3,4-dihydroxyphenylalanine melanin. Inhibition studies involving specific inhibitors, both tricyclazole and phthalide, and suggest that fungal melanin could be synthesized through the 1,8-dihydroxynaphthalene pathway. The optimum conditions for fungal pigment production from this species were investigated. The highest fungal pigment yield was observed in glucose yeast extract peptone medium at an initial pH value of 6.0 and at 25 degrees C over three weeks of cultivation. This is the first report on the production and characterization of melanin obtained from the genus Spissiomyces.

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Product Details of 87-41-2. Recently I am researching about PARKINSONS-DISEASE; LIVING CELLS; GSH LEVELS; HOMOCYSTEINE; GLUTATHIONE; PLASMA; CHEMOSENSOR; MECHANISM; APOPTOSIS; RATHER, Saw an article supported by the . Published in PERGAMON-ELSEVIER SCIENCE LTD in OXFORD ,Authors: Liu, ZK; Wang, QQ; Wang, H; Su, WT; Dong, SL. The CAS is 87-41-2. Through research, I have a further understanding and discovery of Isobenzofuran-1(3H)-one

The specific detection of cysteine (Cys) over homocysteine (Hcy), glutathione (GSH) and other amino acids is of great significance for studying its biological functions as well as for the diagnosis of related diseases. Chloroacetyl group was often used as a reaction site for cysteine fluorescent probes for its sensitivity and selectivity. However, high background fluorescence and low stability are common problems encountered by such probes. Here, four chloroacetyl group based fluorescent probes (C1, C2, C3, and H4) was synthesized for a comparative study. We found that the inefficient quenching ability of chloroacetyl group turned into an advantage when connected with a ratiometric fluorophore. With the modification of chloroacetyl group, probe H4 displayed excellent ratiometric property and great selectivity for Cys, the stability was also improved. Additionally, the probe was successfully applied for quantitative detection of Cys in fetal bovine serum and real-time imaging in living HeLa cells with low toxicity. (C) 2019 Elsevier Ltd. All rights reserved.

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Recently I am researching about MASS-SPECTROMETRY; FATTY-ACIDS; A-D; LIQUID-CHROMATOGRAPHY; KINASE INHIBITOR; FRUITING BODY; IDENTIFICATION; ANTIOXIDANT; HANABIRATAKE; METABOLITES, Saw an article supported by the Key Projects of Scientific Research Program of Beijing Municipal Commission of Education [KZ201811417049]. Computed Properties of C8H6O2. Published in MDPI in BASEL ,Authors: Wang, ZX; Liu, JY; Zhong, XJ; Li, JJ; Wang, X; Ji, LL; Shang, XY. The CAS is 87-41-2. Through research, I have a further understanding and discovery of Isobenzofuran-1(3H)-one

Sparassis crispa is a kind of edible fungus widely grows in the north temperate zone, which shows various medicinal properties. Due to the complexity of chemical constitutes of this species, few investigations have acquired a comprehensive configuration for the chemical profile of it. In this study, a strategy based on ultra-high performance liquid chromatography (UPLC) combined with Orbitrap mass spectrometer (MS) was established for rapidly characterizing various chemical components in S. crispa. Through the summarized MS/MS fragmentation patterns of reference compounds and systematic identification strategy, a total of 110 components attributed to six categories were identified for the first time. Moreover, allergic rhinitis (AR) is a worldwide inflammatory disease seriously affecting human health, and the development of drugs to treat AR has been a topic of interest. It has been reported that the extracts of S. crispa showed obvious inhibitory effects on degranulation of mast cell- and allergen-induced IgE and proinflammatory mediators, but the active components and specific mechanism were still not clear. Src family kinases (SFKs) participate in the initial stage of allergy occurrence, which are considered the targets of AR treatment. Herein, on the basis of that self-built chemical database, virtual screening was applied to predict the potential SFKs inhibitors in S. crispa, using known crystal structures of Hck, Lyn, Fyn, and Syk as receptors, followed by the anti-inflammatory activity evaluation for screened hits by intracellular calcium mobilization assay. As results, sparoside A was directly confirmed to have strong anti-inflammatory activity with an IC50 value of 5.06 +/- 0.60 mu M. This study provides a useful elucidation for the chemical composition of S. crispa, and demonstrated its potential inhibitory effects on AR, which could promote the research and development of effective agents from natural resources.

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Fang, X; Ma, Q; Zhang, KX; Yao, SY; Feng, Y; Jin, YS; Liang, S in [Fang, Xin; Ma, Qiang; Feng, Yi; Liang, Shuang] Shanghai Univ Tradit Chinese Med, Innovat Res Inst Tradit Chinese Med, Shanghai 201203, Peoples R China; [Zhang, Kai-Xia; Yao, Song-Yun; Jin, Yong-Sheng] Second Mil Med Univ, Sch Pharm, Shanghai 200433, Peoples R China published Synthesis of phthalide derivatives and evaluation on their antiplatelet aggregation and antioxidant activities in 2020, Cited 25. Product Details of 87-41-2. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2.

As part of our continuing efforts to discover structurally interesting bioactive phthalide derivatives, 23 of them with a structure incorporating thiophen or halogens were designed and synthesized, 17 of which are previously unreported. In vitro antiplatelet aggregation activity screening showed that 14b could significantly inhibit platelet aggregation induced by arachidonic acid, compared with edaravone (p < 0.01). Meanwhile, oxidative damage models using SH-SY5Y and PC12 cells induced by H2O2 were built to evaluate the antioxidant activity of the phthalide derivatives. In SH-SY5Y cells, compared with aspirin, 1a significantly increased the relative cell survival rate (p < 0.05). Compared with edaravone, 1a (p < 0.01) and 15b (p < 0.05) significantly increased the relative cell survival rate. In PC12 cells, 1a (p < 0.01), 15b (p < 0.01), and 12a (p < 0.05) remarkably increased the cell survival rate compared with edaravone. The present study identified lead structures to develop potential anti-ischemic stroke agents. Product Details of 87-41-2. Welcome to talk about 87-41-2, If you have any questions, you can contact Fang, X; Ma, Q; Zhang, KX; Yao, SY; Feng, Y; Jin, YS; Liang, S or send Email.

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Recently I am researching about FLUORESCENT-PROBES; CELL; FLUOROPHORE; MICROSCOPY, Saw an article supported by the Department of Optical Nanoscopy. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Butkevich, AN. The CAS is 87-41-2. Through research, I have a further understanding and discovery of Isobenzofuran-1(3H)-one. Recommanded Product: 87-41-2

A modular synthetic approach toward diverse analogues of the far-red fluorophore silicon-rhodamine (SiR), based on a regioselective double nucleophilic addition of aryllanthanum reagents to esters, anhydrides, and lactones, is proposed. The reaction has improved functional group tolerance and represents a unified strategy toward cell-permeant, spontaneously blinking, and photoactivatable SiR fluorescent labels. In tandem with Pd-catalyzed hydroxy- or aminocarbonylation, it serves a streamlined synthetic pathway to a series of validated live-cell-compatible fluorescent dyes.

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Benzofuran – Wikipedia,
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An article Pd-Catalyzed Dehydrogenative Oxidation of Alcohols to Functionalized Molecules WOS:000481979500029 published article about OXIDANT-FREE OXIDATION; CARBOXYLIC-ACID SALTS; ASTERISK-IR COMPLEX; SECONDARY ALCOHOLS; HOMOGENEOUS RUTHENIUM; HYDROGEN-PRODUCTION; N-ALKYLATION; ACCEPTORLESS; PALLADIUM; LIGAND in [Mori, Takamichi] Sanyo Onoda City Univ, Fac Engn, Dept Appl Chem, 1-1-1 Daigakudori, Yamaguchi 7560884, Japan; [Ishii, Chihiro; Kimura, Masanari] Nagasaki Univ, Grad Sch Engn, 1-14 Bunkyo Machi, Nagasaki 8528521, Japan in 2019, Cited 63. Computed Properties of C8H6O2. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2

A dehydrogenative oxidation reaction of primary alcohols to aldehydes catalyzed by a simple Pd/Xantphos catalytic system was developed under an argon or nitrogen atmosphere without oxidizing agents or hydrogen acceptors. The reaction product could be easily changed: under aerobic conditions, esters were obtained in aprotic solvents, whereas the corresponding carboxylic acids were produced in aqueous media. These oxidizing processes were applicable to the efficient synthesis of useful nitrogen-containing heterocyclic compounds such as indole, quinazoline, and benzimidazole via intramolecular versions of this reaction from amino alcohols.

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An article Cu(I)-Based Metal-Organic Frameworks as Efficient and Recyclable Heterogeneous Catalysts for Aqueous-Medium C-H Oxidation WOS:000458348000054 published article about AEROBIC OXIDATION; COORDINATION POLYMERS; BONDS ACTIVATION; HIGHLY EFFICIENT; FACILE SYNTHESIS; KETONES; WATER; ARYLALKANES; CONVERSION; SORPTION in [Gao, Kuan; Yang, Yisen; Li, Hong; Wu, Jie; Hou, Hongwei] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China; [Huang, Chao] Zhongyuan Univ Technol, Ctr Adv Mat Res, Zhengzhou 450001, Henan, Peoples R China in 2019, Cited 48. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2. Quality Control of Isobenzofuran-1(3H)-one

The enantioselective transformation of ubiquitous C-H bonds into valuable C=O bonds offers an efficient synthetic approach to construct carbonyl functionalized molecules. However, the grand obstacles in the reaction are the selectivity issues and side reactions under the harsh reaction conditions. In order to overcome the limits, two Cu(I)-based MOFs {(NEt4)(0.5)[Cu-3 (TTPB)(0.75) (CN)(0.5)(H2O)]center dot H2O}(n) (1) and {[Cu-2 (TTPB)(0.5)]center dot DMF center dot 2H(2)O}(n) (2) were synthesized (H-4 TTPB = 5,5′ – (4′,5′ -bis (4- (1H-tetrazol-5-yl)phenyl)- [1,1′ :2′,1 ”-terphenyl]-4,4 ”-diyl) bis(1H-tetrazole)) under hydrothermal conditions with (triethylamine (TEA) and ethyldiisopropylamine (DIPEA) as structure-directing agents, respectively. Of these, 1 shows an anionic three-dimensional (3D) framework composed of two kinds of cagelike micropores with 7 X 17 angstrom and 10 x 17 angstrom, respectively. In comparison, 2 exhibits a 3D framework with open channels (14 x 8 angstrom). The stability studies showed that the crystallinity of 1 and 2 could remain in a series of organic solvents (ethanol, N,N-dimethylformamide, chloroform, dioxane, toluene) and acid and alkali aqueous solutions (pH = 1-13) at room temperature for 48 h. 1 and 2 with coordinatively unsaturated Cu(I) sites were applied as heterogeneous catalysts for the oxidation of arylacycloalkanes in aqueous medium and exhibited excellent catalytic activities, selectivities, and recyclabilities. Moreover, free-radical reaction mechanism and reversible valence-tautomeric conversions of central copper were confirmed during the process by control experiment.

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Benzofuran – Wikipedia,
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Authors Capolupo, M; Sorensen, L; Jayasena, KD; Booth, AM; Fabbri, E in PERGAMON-ELSEVIER SCIENCE LTD published article about MUSSEL MYTILUS-EDULIS; SEA-URCHIN; BISPHENOL-A; TOXICITY; METALS; EMBRYOS; WATER; ZINC; MICROPLASTICS; ENVIRONMENT in [Capolupo, Marco; Jayasena, Kongalage Don Ranil; Fabbri, Elena] Univ Bologna, Dept Biol Geol & Environm Sci, Via St Alberto 163, I-48123 Ravenna, Italy; [Sorensen, Lisbet; Booth, Andy M.] SINTEF Ocean Environm & New Resources, Postboks 4762, N-7465 Trondheim, Norway in 2020, Cited 66. Name: Isobenzofuran-1(3H)-one. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2

Synthetic polymer-based materials are ubiquitous in aquatic environments, where weathering processes lead to their progressive fragmentation and the leaching of additive chemicals. The current study assessed the chemical content of freshwater and marine leachates produced from car tire rubber (CTR), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS) and polyvinyl chloride (PVC) microplastics, and their adverse effects on the microalgae Raphidocelis subcapitata (freshwater) and Skeletonema costatum (marine) and the Mediterranean mussel Mytilus galloprovincialis. A combination of non-target and target chemical analysis revealed a number of organic and metal compounds in the leachates, including representing plasticizers, antioxidants, antimicrobials, lubricants, and vulcanizers. CTR and PVC materials and their corresponding leachates had the highest content of tentatively identified organic additives, while PET had the lowest. The metal content varied both between polymer leachates and between freshwater and seawater. Notable additives identified in high concentrations were benzothiazole (CTR), phthalide (PVC), acetophenone (PP), cobalt (CTR, PET), zinc (CTR, PVC), lead (PP) and antimony (PET). All leachates, except PET, inhibited algal growth with EC50 values ranging from 0.5% (CTR) and 64% (PP) of the total leachate concentration. Leachates also affected mussel endpoints, including the lysosomal membrane stability and early stages endpoints as gamete fertilization, embryonic development and larvae motility and survival. Embryonic development was the most sensitive parameter in mussels, with EC50 values ranging from 0.8% (CTR) to 65% (PET) of the total leachate. The lowest impacts were induced on D-shell larvae survival, reflecting their ability to down-regulate motility and filtration in the presence of chemical stressors. This study provides evidence of the relationship between chemical composition and toxicity of plastic/rubber leachates. Consistent with increasing contamination by organic and inorganic additives, the leachates ranged from slightly to highly toxic to mussels and algae, highlighting the need for a better understanding of the overall impact of plastic-associated chemicals on aquatic ecosystems. (C) 2019 The Authors. Published by Elsevier Ltd.

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COA of Formula: C8H6O2. In 2020 SCI CHINA CHEM published article about CATALYZED ASYMMETRIC HYDROGENATION; MOLECULAR-STRUCTURE; COORDINATION; COMPLEXES; PHOSPHORAMIDITE; DERIVATIVES; COMPOUND; LIGANDS; KETONES; ACIDS in [Yu, Chang-Bin; Wang, Heng-Ding; Song, Bo; Shen, Hong-Qiang; Fan, Hong-Jun; Zhou, Yong-Gui] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China; [Wang, Heng-Ding] Univ Chinese Acad Sci, Beijing 100049, Peoples R China in 2020, Cited 57. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2.

For the metal-catalyzed asymmetric hydrogenation of alpha-substituted ketones, cis reductive products are generally obtained due to steric hindrance of substituents. Herein, an unprecedented trans reductive products were observed in palladium-catalyzed hydrogenative desymmetrization of cyclic and acyclic 1,3-diketones, providing the chiral trans beta-hydroxy ketones with two adjacent stereocenters including one alpha-tertiary or quaternary stereocenter with high enantioselectivity and diastereoselectivity. Mechanistic studies and DFT calculations suggested that the rarely observed diastereoselectivity reversal is ascribed to the charge-charge interaction between the palladium and aromatic ring of the substrate, which could not only result in the reversal of the diastereoselectivity, but also improve the reactivity.

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Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem

Category: benzofurans. In 2019 J ORG CHEM published article about CATALYZES ALDOL-CONDENSATIONS; 2,3-DIMETHYLENEBUTADIENE DIANION; CONVENIENT SYNTHESIS; MOLECULAR-STRUCTURE; EFFICIENT SYNTHESIS; PHOTO-DIMERIZATION; CRYSTAL-STRUCTURE; ISOBENZOFURAN; PHOTOCHEMISTRY; 9-TERT-BUTYLANTHRACENE in [Geiger, Thomas; Haupt, Anne; Bettinger, Holger F.] Eberhard Karls Univ Tubingen, Inst Organ Chem, Morgenstelle 18, D-72076 Tubingen, Germany; [Maichle-Moessmer, Caecilia; Schrenk, Claudio; Schnepf, Andreas] Eberhard Karls Univ Tubingen, Inst Anorgan Chem, Morgenstelle 18, D-72076 Tubingen, Germany in 2019, Cited 84. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2.

There is increased evidence that the effect of bulky groups in organic, organometallic, and inorganic chemistry is not only repulsive but can be attractive because of London dispersion interactions. The influence of the size of primary alkyl substituents in 2- ‘ and 2,3-positions of anthracenes on the diastereoselectivity (anti vs syn dimer) of the [pi(4s) + pi(4s)] photoinduced dimerization is investigated. The synthesis of the anthracene derivatives was achieved by Suzuki-Miyaura reaction of 2,3-dibromoanthracene with alkylboronic acids as well as by reduction of anthraquinones that were obtained from 2,3-disubstituted 1,3-butadienes and naphthoquinone followed by dehydrogenation. The mixtures of dianthracene isomers were analyzed with respect to the anti/syn-ratio of the products by X-ray crystallography and nuclear Overhauser effect spectroscopy. While for the 2,3-dimethylanthracene the anti and syn isomers were formed in equal amounts, the anti dimers are the major products in all other cases. A linear correlation (R-2 = 0.98) between the steric size (Charton parameter) and the isomeric ratio suggests that the selectivity is dominated by classical repulsive steric effects. An exception is the iso-butyl substituent that produces an increased amount of the syn isomer. It is suggested that this is due to an exalted effect of London dispersion interactions.

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Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem