Month: October 2022

Nikoorazm, Mohsen; Erfani, Zahra published the artcile< Fe3O4@MCM-41@Zn-Arg: as a novel, magnetically recoverable and ecofriendly nanocatalyst for the synthesis of disulfides, sulfoxides and 2,3-dihydroquinazolin-4(1H)-ones>, COA of Formula: C8H10OS, the main research area is disulfide sulfoxide dihydroquinazolinone green preparation zinc arginine complex catalyst.

The direct supporting of Zn-arginine complex on magnetic core-shell nanostructures (Fe3O4@MCM-41@Zn-Arg) was reported as a novel, heterogeneous and excellent nanocatalyst, which was applied for the oxidation reaction of sulfides to sulfoxides, oxidative coupling of thiols to their corresponding disulfides and the synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives under mild conditions. The simple exptl. procedure, very good catalytic activity, low cost, and excellent recycling are the noteworthy features of the currently employed heterogeneous catalytic system.

Inorganic and Nano-Metal Chemistry published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, COA of Formula: C8H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dong, Yue; Sui, Mingrui; Wang, Xin; Zhang, Peng; Jiang, Yiying; Wu, Jianyu published the artcile< Responses of electroactive biofilms to chronic chlorine exposure: Insights from the composition and spatial structure of extracellular polymeric substances>, Product Details of C6H12O6, the main research area is chlorine extracellular polymeric substance disinfection electroactive biofilm; Chronic chlorine exposure; Electroactive biofilms (EABs); Electron exchange capacities; Extracellular polymeric substances (EPS); Pollutant degradation.

Extensive amounts of chlorine disinfectants have been applied to wastewater system since the outbreak of coronavirus disease 2019 (COVID-19), which inevitably affects the pollutant degradation via interfering with electron transfer mediated by electroactive bacteria. Herein, the response of electroactive biofilm (EAB) to chronic chlorine exposure was investigated. Results showed the EAB formed without exposure (EAB-0) exhibited a 53% and 123% higher current output than that formed with 0.1 mg L-1 (EAB-0.1) and 0.5 mg L-1 (EAB-0.5) chlorine, resp. The chronic chlorine exposure of EAB boosted the contents of extracellular polymeric substances (EPS) in EAB-0.1 and EAB-0.5 by over secretion of extracellular polysaccharides. The EAB-0.1 and EAB-0.5 also presented lower electron exchange capacities (EECs) of EPS, coincided with reduced relative abundance of Geobacter from 61% in EAB-0 to 52% in EAB-0.5. This study provided new insights into the application of engineered EAB for wastewater treatment in a disinfection environment.

Bioelectrochemistry published new progress about Acinetobacter. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Product Details of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lee, Seung Mi; Moon, Ju-Yeon; Lim, Byeong-Yun; Kim, Sun Min; Park, Chan-Wook; Kim, Byoung Jae; Jun, Jong Kwan; Norwitz, Errol R.; Choi, Man Ho; Park, Joong Shin published the artcile< Increased biosynthesis and accumulation of cholesterol in maternal plasma, but not amniotic fluid in pre-eclampsia>, Category: alcohols-buliding-blocks, the main research area is preeclampsia amniotic fluid diagnosis metabolomics cholesterol.

We undertook this study to compare the metabolic signatures of cholesterol in serum and amniotic fluid collected from women who delivered in the late preterm period. Matching serum and amniotic fluid samples were collected from women who delivered in the late preterm period (34-0/7-36-6/7 wk), had undergone amniocentesis within 3 days of delivery, had no evidence of rupture of membranes or intra-amniotic infection/inflammation, and who had not received antenatal corticosteroid prior to amniocentesis. A total of 39 women were included in the anal. (n = 14 in Group 1, n = 16 in Group 2, n = 9 in Group 3). In maternal blood, patients in Group 1 had higher ratios of cholesterol/desmosterol and cholesterol/7-dehydrocholesterol (which represent 24- and 7-reductase enzyme activity, resp.) than those in Group 3 (p < 0.05 for each), which suggests increased cholesterol biosynthesis. In contrast, patients in Group 1 had decreased ratios of individual cholesterol esters/cholesterol and total cholesterol esters/cholesterol than those in Groups 3 (p < 0.01 for each), suggesting increased reverse cholesterol transport. No differences in cholesterol ratios were found in amniotic fluid among the 3 groups. In conclusion, the metabolic signatures of cholesterol suggest increased cholesterol biosynthesis and accumulation in the maternal blood (but not amniotic fluid) of women with preeclampsia. Scientific Reports published new progress about Amniotic fluid. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Delle Bovi, Richard J.; Kim, JiHyun; Suresh, Pavana; London, Erwin; Miller, W. Todd published the artcile< Sterol structure dependence of insulin receptor and insulin-like growth factor 1 receptor activation>, Synthetic Route of 434-16-2, the main research area is insulin receptor IGF1R autophosphorylation cholesterol sterol plasma membrane; Autophosphorylation; Cholesterol; Receptor tyrosine kinase.

The plasma membrane is a dynamic environment with a complex composition of lipids, proteins, and cholesterol. Areas enriched in cholesterol and sphingolipids are believed to form lipid rafts, domains of highly ordered lipids. The unique phys. properties of these domains have been proposed to influence many cellular processes. Here, we demonstrate that the activation of insulin receptor (IR) and insulin-like growth factor 1 receptor (IGF1R) depends critically on the structures of membrane sterols. IR and IGF1R autophosphorylation in vivo was inhibited by cholesterol depletion, and autophosphorylation was restored by the replacement with exogenous cholesterol. We next screened a variety of sterols for effects on IR activation. The ability of sterols to support IR autophosphorylation was strongly correlated to the propensity of the sterols to form ordered domains. IR autophosphorylation was fully restored by the incorporation of ergosterol, dihydrocholesterol, 7-dehydrocholesterol, lathosterol, desmosterol, and allocholesterol, partially restored by epicholesterol, and not restored by lanosterol, coprostanol, and 4-cholesten-3-one. These data support the hypothesis that the ability to form ordered domains is sufficient for a sterol to support ligand-induced activation of IR and IGF1R in intact mammalian cells.

Biochimica et Biophysica Acta, Biomembranes published new progress about Cell membrane. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Synthetic Route of 434-16-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Molaei, Somayeh; Tamoradi, Taiebeh; Ghadermazi, Mohammad; Ghorbani-Choghamarani, Arash published the artcile< Highly Efficient Oxidative Coupling of Thiols and Oxidation of Sulfides in the Presence of MCM-41@Tryptophan-Cd and MCM-41@Tryptophan-Hg as Novel and Recoverable Nanocatalysts>, Application of C8H10OS, the main research area is thiol sulfide oxidative coupling silica tryptophan cadmium mercury nanocatalyst.

Abstract: Two heterogeneous catalysts, MCM-41@Tryptophan-Cd and MCM-41@Tryptophan-Hg, were synthesized by immobilization of Cd or Hg complexes on MCM-41 as novel, efficient, recoverable and stable nanocatalysts for Oxidation of sulfides to sulfoxides and oxidative coupling of thiols into their corresponding disulfides. These functionalized complexes were characterized by FT-IR spectroscopy, thermogravimetric anal. (TGA), powder X-ray diffraction (XRD) and N2 adsorption-desorption isotherms. The designed catalysts successfully oxidized a variety of sulfides and thiols with short reaction times in high to excellent yields at room temperature and recovered for several times without significant loss of their catalytic activity. Graphical Abstract: Synthesis of Cd and Hg tryptophan complexes immobilized on to surface of mesoporous MCM-41 under mild reaction conditions has been presented. After characterization of these catalysts, their catalytic activity has been investigated for the synthesis of sulfoxide and disulfides derivatives [Figure not available: see fulltext.].

Catalysis Letters published new progress about Adsorption. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Application of C8H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lu, Jike; Li, Jingjing; Jin, Ruichong; Li, Shufang; Yi, Juanjuan; Huang, Jinyong published the artcile< Extraction and characterization of pectin from Premna microphylla Turcz leaves>, Category: alcohols-buliding-blocks, the main research area is Premna leaf pectin response surface methodol microwave pretreatment; Characterization; Pectin; Premna microphylla Turcz leaves.

N this work, response surface methodol. (RSM) and microwave pretreatment were used to extract pectin from Premna microphylla Turcz leaves (PMTL). The process variables were optimized by the isovariant central composite design to improve the pectin extraction yield. The optimum conditions obtained were as follows, extraction time 2 h, temperature 90 °C, pH 2 and liquid-solid (LS) ratio 50 mL/g. The extraction yield was 18.25% under these conditions, which was close to the predicted value (17.60%). Then the pectin was characterized by gas chromatog. (GC), spectrophotometric (UV-visible Spectroscopy) and spectroscopic (Fourier transform IR) methods. The galacturonic acid content was 82.75%, and on this basis, the other monosaccharide composition anal. illustrated that pectin from PMTL was also composed of rhamnose, arabinose, mannose, glucose and galactose in a ratio of 2.96:1.17:1.04:8.07:2.05. The pectin of PMTL had an esterification degree of 62.50% and it showed good antioxidant activity. Taken together, the pectin of PMTL could be used as potential additive in food industry.

International Journal of Biological Macromolecules published new progress about Antioxidants. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Budweg, Svenja; Wei, Zhihong; Jiao, Haijun; Junge, Kathrin; Beller, Matthias published the artcile< Iron-PNP-Pincer-Catalyzed Transfer Dehydrogenation of Secondary Alcohols>, Category: alcohols-buliding-blocks, the main research area is iron PNP pincer catalyst transfer dehydrogenation secondary alc; ketone preparation mol modeling; homogeneous catalysis; iron; oxidation; pincer ligands; transfer dehydrogenation.

The well-defined iron PNP pincer complex catalyst [Fe(H)(BH4)(CO)(HN{CH2CH2P(iPr)2}2)] was used for the catalytic dehydrogenation of secondary alcs. to give the corresponding ketones. Using acetone as inexpensive hydrogen acceptor enables the oxidation with good to excellent yields. DFT computations indicate an outer-sphere mechanism and support the importance of an acceptor to achieve this transformation under milder conditions.

ChemSusChem published new progress about Dehydrogenation catalysts. 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dubey, Atul; Sangwan, Rekha; Mandal, Pintu Kumar published the artcile< N-benzoylglycine/thiourea cooperative catalyzed stereoselective O-glycosidation: Activation of O-glycosyl trichloroacetimidate donors>, Recommanded Product: ((3aR,5R,5aS,8aS,8bR)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-5-yl)methanol, the main research area is glycoside preparation benzoylglycine thiourea cooperative catalyzed stereoselective glycosidation; benzoylglycine thiourea cooperative catalyzed stereoselective glycosidation trichloroacetimidate donor activation.

A new practical utility for β-stereoselective glycosylation via activation of O-glycosyl trichloroacetimidate donors using N-benzoylglycine/thiourea cooperative catalysis has been demonstrated. This method represents the first instance where amino acid derived N-benzoylglycine is used as a catalyst for O-glycosylation under mild reaction conditions at ambient temperature NMR spectroscopy studies suggest that thiourea cocatalyst exhibit a cooperative behavior that has a strong effect on the reaction rate, yield, and the β-selectivity.

Catalysis Communications published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 4064-06-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C12H20O6, Recommanded Product: ((3aR,5R,5aS,8aS,8bR)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-5-yl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cvetko, Ana; Kifer, Domagoj; Gornik, Olga; Klaric, Lucija; Visser, Elizabeth; Lauc, Gordan; Wilson, James F.; Stambuk, Tamara published the artcile< Glycosylation alterations in multiple sclerosis show increased proinflammatory potential>, Category: alcohols-buliding-blocks, the main research area is glycosylation multiple sclerosis proinflammatory potential; N-glycosylation; biomarkers; immunoglobulin G in inflammation; multiple sclerosis; plasma glycoproteins.

Multiple sclerosis (MS) is an inflammatory autoimmune disorder affecting the central nervous system (CNS), with unresolved etiol. Previous studies have implicated N-glycosylation, a highly regulated enzymic attachment of complex sugars to targeted proteins, in MS pathogenesis. We investigated individual variation in N-glycosylation of the total plasma proteome and of IgG in MS. Both plasma protein and IgG N-glycans were chromatog. profiled and quantified in 83 MS cases and 88 age- and sex-matched controls. Comparing levels of glycosylation features between MS cases and controls revealed that core fucosylation (p = 6.96 x 10-3) and abundance of high-mannose structures (p = 1.48 x 10-2) were the most prominently altered IgG glycosylation traits. Significant changes in plasma protein N-glycome composition were observed for antennary fucosylated, tri- and tetrasialylated, tri- and tetragalactosylated, high-branched N-glycans (p-value range 1.66 x 10-2-4.28 x 10-2). Classification performance of N-glycans was examined by ROC curve anal., resulting in an AUC of 0.852 for the total plasma N-glycome and 0.798 for IgG N-glycome prediction models. Our results indicate that multiple aspects of protein glycosylation are altered in MS, showing increased proinflammatory potential. N-glycan alterations showed substantial value in classification of the disease status, nonetheless, addnl. studies are warranted to explore their exact role in MS development and utility as biomarkers.

Biomedicines published new progress about Autoimmune disease (inflammatory). 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Meng, Manli; Liu, Shuyue; Wang, Xinhua published the artcile< Pressure retarded osmosis coupled with activated sludge process for wastewater treatment: Performance and fouling behaviors>, Formula: C6H12O6, the main research area is membrane wastewater treatment osmosis biofoulant activated sludge pore; Forward osmosis; Membrane fouling; Pressure retarded osmosis; Support layer; Wastewater treatment.

A novel hybrid technol. integrating pressure retarded osmosis with activated sludge process (denoted as PRO-MBR) was proposed in this study for wastewater treatment. Here, performance and fouling behaviors of PRO-MBR were investigated. Excellent contaminants removal and power production were simultaneously achieved in the PRO-MBR. A significant drop of water flux in the PRO-MBR was mainly due to the severe fouling of the support layer in forward osmosis (FO) membrane including internal fouling and external fouling. Although the external fouling was identified to be the major type of fouling, the internal fouling dominated the overall decline of water flux. In addition, organic foulants and biofoulants were the dominant foulants for the external fouling while inorganic foulants were equal to organic foulants and biofoulants for the internal fouling. According to the variations of water flux in the PRO-MBR, the development of support layer fouling was divided into three stages.

Bioresource Technology published new progress about Biopolymers Role: BSU (Biological Study, Unclassified), BUU (Biological Use, Unclassified), BIOL (Biological Study), USES (Uses). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts