Author: tianli

Duchow, Elizabeth G.; Sibilska-Kaminski, Izabela K.; Plum, Lori A.; DeLuca, Hector F. published the artcile< Vitamin D esters are the major form of vitamin D produced by UV irradiation in mice>, Reference of 434-16-2, the main research area is vitamin D ester UV irradiation; 7-Dehydrocholesterol; Skin; Ultraviolet light B; Vitamin D; Vitamin D esters; Vitamin D-binding protein.

The primary source of vitamin D3 for humans is that produced in skin by UV irradiation UV B (UVB, 280-310 nm) light causes the isomerization of 7-dehydrocholesterol (7-DHC) to pre-vitamin D3 that is thermally isomerized to vitamin D3. In addition to free vitamin D3, it has been previously reported that esterified vitamin D3 is also found in the skin of rats irradiated with UVB. We found that a large fraction of the vitamin D3 precursor, 7-dehydrocholesterol is in the esterified form. Following UVB irradiation, vitamin D3 esters represent the majority of tissue vitamin D3, comprising approx. 80% in mice. Examination of vitamin D3 ester transport from skin in DBP-/- mice demonstrated that skin vitamin D3 ester content decreased only in the presence of DBP. No significant binding of vitamin D3 esters by serum was observed and no vitamin D3 esters were detectable in mouse serum after UVB treatment, indicating that the esters are hydrolyzed prior to transport into the circulation. The significance of vitamin D3 esters and their hydrolysis is the subject of current investigation.

Photochemical & Photobiological Sciences published new progress about Blood serum. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Reference of 434-16-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Prathima, A.; Karthikeyan, S.; Radhi Devi, K.; Usha, K.; Shanthi, M. published the artcile< Environmental effect of lubricity additives through dielectric molecular parameters>, Synthetic Route of 104-76-7, the main research area is caprylic valeric acid additive lubricity.

Lubricant additives are chems., nearly always-organic or organometallic, that are added to oils in quantities of a few weight percent to improve the lubricating capacity and durability of the oil. Specific purposes of lubricant additives are improving the wear and friction characteristics by provision for adsorption and extreme pressure lubrication, improving the oxidation resistance, control of corrosion, control of contamination by reaction products, wear a and other debris, reducing excessive decrease of lubricant viscosity at high temperatures, enhancing lubricant characteristics by reducing the pour point and inhibiting the generation of foam. These properties depend upon the mol. interactions between the chem. additives. So that, this study target on investigating the mol. interactions through the dielec. parameters such as Kirkwood correlation factor, Excess permittivity, Bruggemann factor and Dipolar excess free energy in the lubricative binary mixtures,(1) caprylic acid + 2-ethyl-1-hexanol and (2) valeric acid + 2-ethyl-1-hexanol. The above dielec. parameters have been calculated from the exptl. measured values of capacitance and refractive index of mixtures, at temperatures 303 K, 313 K and 323 K. In the above studied systems, existence of short and long range, homo and hetero interactions are identified. The hetero interaction results in the formation linear as well as closed multimers in the mixture Due to the existing interactions, structural changes are found to take place.

Materials Today: Proceedings published new progress about Helmholtz free energy. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Synthetic Route of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gallegos, Felipe E.; Meneses, Lorena M.; Cuesta, Sebastian A.; Santos, Juan C.; Arias, Josefa; Carrillo, Pamela; Pilaquinga, Fernanda published the artcile< Computational Modeling of the Interaction of Silver Clusters with Carbohydrates>, Product Details of C6H12O6, the main research area is computational modeling interaction silver cluster carbohydrate.

Silver nanoparticles are recognized for their numerous phys., biol., and pharmaceutical applications. In the present study, the interaction of silver clusters with monosaccharide mols. is examined to identify which mol. works better as a reducing agent in the application of a green synthesis approach. Geometry optimization of clusters containing one, three, and five silver atoms is performed along with the optimization of α-D-glucose, α-D-ribose, D-erythrose, and glyceraldehyde using d. functional theory. Optimized geometries allow identifying the interaction formed in the silver cluster and monosaccharide complexes. An electron localization function anal. is performed to further analyze the interaction found and explain the reduction process in the formation of silver nanoparticles. The overall results indicate that glyceraldehyde presents the best characteristics to serve as the most efficient reducing agent.

ACS Omega published new progress about Complexation. 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

Molaei, Somayeh; Ghadermazi, Mohammad published the artcile< Selective and efficient oxidation of sulfides and thiols to their corresponding sulfoxides and disulfides catalyzed with praseodymium (III) and dysprosium (III) isonicotinamide (INA) complexes grafted onto modified mesoporous MCM-41>, Formula: C8H10OS, the main research area is sulfide thiol oxidation praseodymium dysprosium isonicotinamide complex.

Praseodymium (III) and dysprosium (III) isonicotinamide (INA) complexes grafted onto modified mesoporous MCM-41 with 3-chloropropyltriethoxysilane (CPTES), as two novel catalysts, were synthesized. The catalysts were determined using SEM, Mapping, EDX, FT-IR, TGA, XRD, ICP, and BET anal. The catalysts (MCM-41-INA-Pr and MCM-41-INA-Dy) were further studied for the oxidation reaction of sulfur-containing compounds Catalytic results displayed that the MCM-41-INA-Pr and MCM-41-INA-Dy show high effectiveness for promoting the oxidation reaction of sulfur-containing compounds The catalysts could be recycled for seven runs with negligible destruction of catalytic performance.

Solid State Sciences published new progress about Adsorption. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Formula: C8H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Heindel, Daniel W.; Koppolu, Sujeethraj; Zhang, Yue; Kasper, Brian; Meche, Lawrence; Vaiana, Christopher A.; Bissel, Stephanie J.; Carter, Chalise E.; Kelvin, Alyson A.; Elaish, Mohamed; Lopez-Orozco, Joaquin; Zhang, Bin; Zhou, Bin; Chou, Tsui-Wen; Lashua, Lauren; Hobman, Tom C.; Ross, Ted M.; Ghedin, Elodie; Mahal, Lara K. published the artcile< Glycomic analysis of host response reveals high mannose as a key mediator of influenza severity>, Reference of 3458-28-4, the main research area is mannose lectin MBL2 Influenza virus infection glycomic; MBL2; lectin array; lectin microarray; mannan binding lectin; mannose binding lectin.

Influenza virus infections cause a wide variety of outcomes, from mild disease to 3 to 5 million cases of severe illness and ∼290,000 to 645,000 deaths annually worldwide. The mol. mechanisms underlying these disparate outcomes are currently unknown. Glycosylation within the human host plays a critical role in influenza virus biol. However, the impact these modifications have on the severity of influenza disease has not been examined Herein, we profile the glycomic host responses to influenza virus infection as a function of disease severity using a ferret model and our lectin microarray technol. We identify the glycan epitope high mannose as a marker of influenza virus-induced pathogenesis and severity of disease outcome. Induction of high mannose is dependent upon the unfolded protein response (UPR) pathway, a pathway previously shown to associate with lung damage and severity of influenza virus infection. Also, the mannan-binding lectin (MBL2), an innate immune lectin that neg. impacts influenza outcomes, recognizes influenza virus-infected cells in a high mannose-dependent manner. Together, our data argue that the high mannose motif is an infection-associated mol. pattern on host cells that may guide immune responses leading to the concomitant damage associated with severity.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Epitopes (glycan). 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Reference of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dahatonde, Dipak J.; Ghosh, Aritra; Batra, Sanjay published the artcile< Metal-Free Synthesis of Alkenylazaarenes and 2-Aminoquinolines through Base-Mediated Aerobic Oxidative Dehydrogenation of Benzyl Alcohols>, Electric Literature of 5344-90-1, the main research area is alkyl azaarene arylmethanol base promoter diastereoselective dehydrogenative olefination; alkenyl azaarene preparation; aminobenzyl alc arylacetonitrile base promoter dehydrogenative cyclocondensation; aminoquinoline preparation.

A metal-free, base-mediated, and atom-efficient oxidative dehydrogenative coupling of substituted phenylmethanols (benzyl alcs.) with Me azaarenes or phenylacetonitriles to afford substituted alkenylazaarenes or 2-aminoquinolines, resp. was described. CsOH. H2O was discovered to be the base of choice for obtaining optimal yields of the title compounds, although the reaction proceeded with KOH as well. The protocol that worked efficiently in the presence of air was amenable over broad range of substrates.

European Journal of Organic Chemistry published new progress about Acetonitriles Role: RCT (Reactant), RACT (Reactant or Reagent). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Electric Literature of 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jantunen, Niklas; Virolainen, Sami; Latostenmaa, Petri; Salminen, Justin; Haapalainen, Mika; Sainio, Tuomo published the artcile< Removal and recovery of arsenic from concentrated sulfuric acid by solvent extraction>, Name: 2-Ethylhexan-1-ol, the main research area is arsenic sulfuric acid tributyl phosphate phase equilibrium solvent extraction.

Arsenic-contaminated sulfuric acid solutions are produced in large quantities as byproduct during pyrometallurgical processing of sulfide minerals. Options for re-using such acid solutions are increased if the arsenic is removed and recovered as a product. The performances of tri-Bu phosphate and a mixture of 6 wt-% 1,2-octanediol in 2-ethylhexanol were studied in liquid-liquid extraction of arsenic from an industrial solution containing 10.4 M H2SO4. It was found that, due to the complex phase equilibrium, a process design based on conventional batch equilibrium data did not describe the countercurrent processes accurately. A countercurrent flowsheet utilizing undiluted tri-Bu phosphate was investigated by pseudo-countercurrent extractions 83.7% extraction of arsenic and 31.4% coextn. of H2SO4 was obtained in three-stage countercurrent extraction operated at a solvent-to-feed ratio of 0.79. Two-stage countercurrent scrubbing with pure water at O/A = 4.03 back-extracted 83.6% of H2SO4 and 24.9% of arsenic. 100% and 89.7% back-extraction was achieved in four-stage stripping at O/A = 2.01 for H2SO4 and arsenic, resp. The effects of varying the flowsheet and operating parameters on separation efficiency are discussed.

Hydrometallurgy published new progress about Phase equilibrium Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Name: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Luo, Yitao; Liu, Zhengyuan; Zeng, Yujie; Zhang, Yuxiao; Luan, Yujing; Ma, Li; Chen, Li; Zou, Lin; Yang, Jingmin; Huang, Zhibin; Rao, Yulan; Zhang, Chengqiang published the artcile< A reliable tool for detecting 7-dehydrocholesterol and cholesterol in human plasma and its use in diagnosis of Smith-Lemli-Opitz syndrome>, Product Details of C27H44O, the main research area is Smith-Lemli-Opitz syndrome; antioxidants; biomarkers; inborn errors of metabolism; microwave-assisted derivatization.

Background : Smith-Lemli-Opitz syndrome is a birth defect caused by the deficiency of 7-dehydrocholesterol reductase in cholesterol biosynthesis pathway, which leads to accumulation of 7-dehydrocholesterol and reduction of cholesterol in body fluids. To effectively diagnose Smith-Lemli-Opitz syndrome and monitor therapy, a reliable method for simultaneous detection of 7-dehydrocholesterol and cholesterol is needed. Methods : In the presence of antioxidants (2,6-ditert-butyl-4-methylphenol and triphenylphosphine), 50 μL of human plasma were hydrolyzed at 70°C for 40 min with 1 M potassium hydroxide in 90% ethanol, and then 7-dehydrocholesterol and cholesterol were extracted by 600 μL of n-hexane for three times. After microwave-assisted derivatization with 70 μL of N,O-bis(trimethylsilyl)trifluoroacetamide at 460 W for 3 min, the analytes were measured by gas chromatog.-mass spectrometry. Results : The limits of detection were 100 ng/mL for 7-dehydrocholesterol and 300 ng/mL for cholesterol. Good linearity was obtained in the range of 1-600 μg/mL for 7-dehydrocholesterol and 10-600 μg/mL for cholesterol, which completely covered the biochem. levels of Smith-Lemli-Opitz syndrome patients that have been reported. Conclusion : A time-saving and accurate gas chromatog. with mass spectrometry based method was developed for the determination of 7-dehydrocholesterol and cholesterol in human plasma, which also serves as a useful tool for Smith-Lemli-Opitz syndrome diagnosis, treatment, and research.

Journal of Separation Science published new progress about 434-16-2. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Product Details of C27H44O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gianchecchi, Elena; Fierabracci, Alessandra published the artcile< Insights on the effects of resveratrol and some of its derivatives in cancer and autoimmunity: a molecule with a dual activity>, COA of Formula: C14H12O3, the main research area is review cancer autoimmunity type 1 diabetes resveratrol; autoimmunity; cancer; resveratrol.

A review. In recent years, the interest in natural compounds exerting immunoregulatory effects has enormously increased. Among these, the polyphenol resveratrol, found in a variety of foods and beverages, including red grapes and red wine, has been demonstrated to exert both in vitro and in vivo biol. activities. More specifically, it has antiaging, cardioprotective, antioxidant, immunomodulatory, anti-inflammatory and chemopreventive activities. Due to its anti-proliferative, pro-apoptotic and immunoregulatory effects, resveratrol has gained substantial attention for the treatment of cancer or autoimmunity, which represent frequently diagnosed diseases with important consequences for the health of the patients affected. The aim of the present review is to focus on the role of resveratrol in the modulation of cancer as well as of several organ-specific or systemic autoimmune diseases, including autoimmune hepatitis, type 1 diabetes mellitus, inflammatory bowel disease, rheumatoid arthritis, systemic lupus erythematosus and multiple sclerosis.

Antioxidants published new progress about Anti-aging agents. 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, COA of Formula: C14H12O3.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gas-Pascual, Elisabet; Ichikawa, Hiroshi Travis; Sheikh, Mohammed Osman; Serji, Mariam Isabella; Deng, Bowen; Mandalasi, Msano; Bandini, Giulia; Samuelson, John; Wells, Lance; West, Christopher M. published the artcile< CRISPR/Cas9 and glycomics tools for toxoplasma glycobiology>, Safety of (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is genome editing CRISPR Cas9 glycome Toxoplasma human infection; CRISPR/Cas; Toxoplasma gondii; glycan; glycobiology; glycogene; glycomics; glycosyltransferase; mass spectrometry (MS); parasitology; protein glycosylation.

Infection with the protozoan parasite Toxoplasma gondii is a major health risk owing to birth defects, its chronic nature, ability to reactivate to cause blindness and encephalitis, and high prevalence in human populations. Unlike most eukaryotes, Toxoplasma propagates in intracellular parasitophorous vacuoles, but like nearly all other eukaryotes, Toxoplasma glycosylates many cellular proteins and lipids and assembles polysaccharides. Toxoplasma glycans resemble those of other eukaryotes, but species-specific variations have prohibited deeper investigations into their roles in parasite biol. and virulence. The Toxoplasma genome encodes a suite of likely glycogenes expected to assemble N-glycans, O-glycans, a C-glycan, GPI-anchors, and polysaccharides, along with their precursors and membrane transporters. To investigate the roles of specific glycans in Toxoplasma, here we coupled genetic and glycomics approaches to map the connections between 67 glycogenes, their enzyme products, the glycans to which they contribute, and cellular functions. We applied a double-CRISPR/Cas9 strategy, in which two guide RNAs promote replacement of a candidate gene with a resistance gene; adapted MS-based glycomics workflows to test for effects on glycan formation; and infected fibroblast monolayers to assess cellular effects. By editing 17 glycogenes, we discovered novel Glc0-2-Man6-GlcNAc2-type N-glycans, a novel HexNAc-GalNAc-mucin-type O-glycan, and Tn-antigen; identified the glycosyltransferases for assembling novel nuclear O-Fuc-type and cell surface Glc-Fuc-type O-glycans; and showed that they are important for in vitro growth. The guide sequences, editing constructs, and mutant strains are freely available to researchers to investigate the roles of glycans in their favorite biol. processes.

Journal of Biological Chemistry published new progress about Amplicon Role: BUU (Biological Use, Unclassified), BIOL (Biological Study), USES (Uses) (DHFR). 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Safety of (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts