Month: October 2022

Ye, Guangying; Li, Jie; Zhang, Jinhui; Liu, Hailin; Ye, Qingsheng; Wang, Zaihua published the artcile< Structural characterization and antitumor activity of a polysaccharide from Dendrobium wardianum>, Electric Literature of 3458-28-4, the main research area is erlotinib hydrochloride Dendrobium anticancer agent lung cancer; Acetylated glucomannan lung cancer cells; Anti-tumour activity; Dendrobium wardianum; Polysaccharide characteristics.

Through hot water extraction, protein removal and chromatog. purification, DWPP-Is was found to be the major polysaccharide present in the stem of D. wardianum. The Mn and Mw of DWPP-Is were 29.0 kDa and 98.6 kDa, resp. Furthermore, mannose and glucose were found to be the most abundant monosaccharides in DWPP-Is. Their backbones consist of (1 → 4)-β-D-Glcp and O-acetylated (1 → 4)-β-D-Manp, which are similar to the structures of other anti-tumor Dendrobium polysaccharides. The inhibition rate of DWPP-Is treatment on SPC-A-1 cells (2 mg/mL, 72 h) reached 56.0%. Intragastric administration of DWPP-Is on A549 tumor-bearing KM mice (10 mg/mL, 0.2 mL) exhibited similar inhibition ratios to that of erlotinib hydrochloride (2 mg/mL). Moreover, the highest inhibition was observed in P-CK treatment combined with DWPP-Is, reaching an inhibition rate of 23.4%. These results suggest that DWPP-Is has the potential to be a functional agent for lung cancer prevention.

Carbohydrate Polymers published new progress about Antitumor agents. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Electric Literature of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wei, Xichuan; Luo, Chuanhong; He, Yanan; Huang, Haozhou; Ran, Fei; Liao, Wei; Tan, Peng; Fan, Sanhu; Cheng, Yuan; Zhang, Dingkun; Lin, Junzhi; Han, Li published the artcile< Hepatoprotective effects of different extracts from triphala against CCl4-induced acute liver injury in mice>, Application of C6H10O8, the main research area is hepatoprotective effect extract triphala CCl4 acute liver injury; CCl4-induced acute liver injury; Nrf-2 signaling pathway; Triphala; bioactivity consistency; extraction process; hepatoprotective effects.

Triphala is a traditional polyherbal formula used in Indian Ayurvedic and Chinese Tibetan medicine. A wide range of biol. activities have been attributed to Triphala, but the impact of various extraction methods on efficacy has not been determined The study aimed to evaluate Triphala extracts obtained by various methods for their hepatoprotective effects and mol. mechanisms in a mouse model of carbon tetrachloride (CCl4)-induced liver injury. HPLC fingerprinting was used to characterize the chem. characteristics of Triphala extracts obtained by (a) 0.5 h ultrasonication, (b) 2 h reflux, and (c) 4 h reflux. Hepatoprotective efficacy was evaluated in a mouse model of CCl4-induced liver damage. Serum levels of alanine transaminase (ALT) and aspartate aminotransferase (AST) were measured, as well as the liver antioxidant and inflammatory markers malondialdehyde superoxide dismutase glutathione peroxidase (GSH-Px), TNF-α, and IL-6. Gene and protein expression of Nrf-2 signaling components Nrf-2, heme oxygenase (HO-1), and NADPH Quinone oxidoreductase (NQO-1) in liver tissue were evaluated by real-time PCR and western blotting. Chem. anal. showed a clear difference in content between extracts produced by ultrasonic and reflux methods. The pharmacol. anal. showed that all three Triphala extracts reduced ALT, AST, MDA, TNF-α, and IL-6 levels and increased SOD and GSH-Px. Triphala extracts also induced transcript and protein expression of Nrf-2, HO-1, and NQO-1. Triphala extract prevents CCl4-induced acute liver injury. The ultrasonic extract of Triphala was most effective, suggesting that hepatoprotection may be related to the larger tannins via activation of Nrf-2 signaling.

Frontiers in Pharmacology published new progress about Antioxidants. 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, Application of C6H10O8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vestergaard, Martin; Ingmer, Hanne published the artcile< Antibacterial and antifungal properties of resveratrol>, Formula: C14H12O3, the main research area is review resveratrol antibacterial antifungal property; ATP synthase inhibition; Antimicrobial; Antivirulence; Combination therapy; Resveratrol.

A review. Resveratrol is a naturally occurring polyphenolic antioxidant that has received massive attention for its potential health benefits, including anticarcinogenesis, anti-aging, and antimicrobial properties. The compound is well tolerated by humans and in recent years has been widely used as a nutraceutical. Its common use makes it interesting to investigate with respect to antimicrobial properties both as a single agent and in combination with conventional antibiotics. Resveratrol displays antimicrobial activity against a surprisingly wide range of bacterial, viral, and fungal species. At subinhibitory concentrations, resveratrol can alter bacterial expression of virulence traits leading to reduced toxin production, inhibition of biofilm formation, reduced motility, and interference with quorum sensing. In combination with conventional antibiotics, resveratrol enhances the activity of aminoglycosides against Staphylococcus aureus, whereas it antagonizes the lethal activity of fluoroquinolones against S. aureus and Escherichia coli. While the antimicrobial properties of the compound have been extensively studied in vitro, little is known about its efficacy in vivo. Nonetheless, following topical application resveratrol has alleviated acne lesions caused by the bacterium Propionibacterium acnes. There are currently no in vivo studies addressing its effect in combination with antibiotics, but recent research suggests that there may be a potential for enhancing the antimicrobial efficacy of certain existing antibiotic classes in combination with resveratrol. Given the difficulties associated with introducing new antimicrobial agents to the market, nutraceuticals such as resveratrol may prove to be interesting candidates when searching for solutions for the growing problem of antimicrobial resistance.

International Journal of Antimicrobial Agents published new progress about Antibacterial agents. 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, Formula: C14H12O3.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ehsan, Muhammad; Wang, Haoqing; Katsube, Satoshi; Munk, Chastine F.; Du, Yang; Youn, Taeyeol; Yoon, Soyoung; Byrne, Bernadette; Loland, Claus J.; Guan, Lan; Kobilka, Brian K.; Chae, Pil Seok published the artcile< Glyco-Steroidal Amphiphiles (GSAs) for Membrane Protein Structural Study>, SDS of cas: 627-27-0, the main research area is glycosteroidal amphiphile membrane protein structure; detergent design; detergent-detergent interactions; glyco-steroids; glycolipids; protein stabilization.

Integral membrane proteins pose considerable challenges to high resolution structural anal. Maintaining membrane proteins in their native state during protein isolation is essential for structural study of these bio-macromols. Detergents are the most commonly used amphiphilic compounds for stabilizing membrane proteins in solution outside a lipid bilayer. We previously introduced a glyco-diosgenin (GDN) detergent that was shown to be highly effective at stabilizing a wide range of membrane proteins. This steroidal detergent has addnl. gained attention due to its compatibility with membrane protein structure study via cryo-EM. However, synthetic inconvenience limits widespread use of GDN in membrane protein study. To improve its synthetic accessibility and to further enhance detergent efficacy for protein stabilization, we designed a new class of glyco-steroid-based detergents using three steroid units: cholestanol, cholesterol and diosgenin. These new detergents were efficiently prepared and showed marked efficacy for protein stabilization in evaluation with a few model membrane proteins including two G protein-coupled receptors. Some new agents were not only superior to a gold standard detergent, DDM (n-dodecyl-β-D-maltoside), but were also more effective than the original GDN at preserving protein integrity long term. These agents represent valuable alternatives to GDN, and are likely to facilitate structural determination of challenging membrane proteins.

ChemBioChem published new progress about Amphiphiles. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, SDS of cas: 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Albrecht, Ute; Tripathi, Indu; Kim, Hoyoun; Bowman, Kim D. published the artcile< Rootstock effects on metabolite composition in leaves and roots of young navel orange (Citrus sinensis L. Osbeck) and pummelo (C. grandis L. Osbeck) trees>, Safety of D-Glucosaccharic acid, the main research area is Citrus leaf root metabolite composition rootstock.

Proper selection of rootstocks in tree fruit crops such as citrus is important for successful production Despite a large number of com. available rootstocks, studies have mostly been limited to basic horticultural observations. We used untargeted gas chromatog.-time of flight-mass spectrometry (GC-TOF MS) based metabolomics to understand the biochem. influence of rootstock on 2-yr-old field-grown ‘Cara Cara’ navel orange (Citrus sinensis L. Osbeck) and ‘Hirado Buntan’ pummelo (C. grandis L. Osbeck) trees grown on four rootstock cultivars with different genetic background. Five hundred unique metabolites were quantified in all trees, of which 147 were chem. identified. In navel orange trees, 48 root metabolites differed significantly in concentrations among rootstocks, compared with 29 metabolites in pummelo trees. In navel orange trees, raffinose, conduritol beta-epoxide, allantoic acid, myo-inositol, gamma-tocopherol, and beta gentiobiose were among the compounds that contributed most to this variation. In pummelo trees, hexitol, allantoic acid, glucoheptulose, tryptophan, gamma-tocopherol, glycerol-3-galactoside, and raffinose were among the most discriminating metabolites, but only allantoic acid passed significance criteria. Rootstock was also found to influence the quantities of 226 metabolites in leaves of the navel orange scion. Conduritol-beta-epoxide and myo-inositol were among the metabolites most influenced by rootstock. In contrast, the influence of rootstock on the pummelo scion was less prominent, with only six metabolites displaying significant differences. Our findings demonstrate that rootstock variety can influence the metabolic profile of the leaves in a grafted tree, but that the extent of the effect is also influenced by the scion. The majority of root metabolites that discriminated most between rootstocks did not display the same rootstock-specific discrimination in the leaves, suggesting tissue specificity or limited movement across the graft union.

Trees (Heidelberg, Germany) published new progress about Citrus grandis. 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, Safety of D-Glucosaccharic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Ruzhang; Zhang, Yuanyuan; Xu, Jun published the artcile< Selective hydroboration of equilibrating allylic azides>, Electric Literature of 627-27-0, the main research area is azido boronic ester preparation pinacolborane oxidation; allylic azide hydroboration iridium catalyst.

The iridium(I)-catalyzed hydroboration of equilibrating allylic azides RCH:CHCH2N3 (R = pentyl, cyclohexylmethyl, 3-(pyrrol-1-yl)propyl, etc.) is reported to provide only the anti-Markovnikov products RCH(N3)CH2CH2OH of alk-1-ene isomers RCH(N3)CH:CH2 in good yields and with good functional group tolerance.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation) (azido-). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Electric Literature of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Blasius, Jan; Elfgen, Roman; Holloczki, Oldamur; Kirchner, Barbara published the artcile< Glucose in dry and moist ionic liquid: vibrational circular dichroism, IR, and possible mechanisms>, Electric Literature of 492-62-6, the main research area is ethyl methylimidazolium acetate glucose hydrogen bond IR spectra.

Ionic liquids and their mixtures with water show remarkable features in cellulose processing. For this reason, understanding the behavior of carbohydrates in ionic liquids is important. In the present study, we investigated three D-glucose isomers (α, β and open-chain) in 1-ethyl-3-methylimidazolium acetate in the presence and absence of water, through ab initio mol. dynamics simulations. In the complex hydrogen bonding network of these mixtures, the most interesting observation is that upon water addition every hydrogen bond elongates, except the glucose-glucose hydrogen bond for the open-chain and the α-form which shortens, clearly showing the beginning of the crystallization process. The ring glucose rearranges from on-top to in-plane and the open form changes from a coiled to a more linear arrangement when adding water which explains the contradiction that the center of mass distances of the glucose mols. with other glucose mols. grow while the hydrogen bonds shorten. The appearance of coiled open forms indicates that the previously suggested isomerization between these forms is possible and might play a role in the solubility of the related carbohydrates. The calculated IR and VCD spectra reveal insight into the intermol. interactions, with good to excellent agreements with exptl. spectra. Investigating the role of the cation, distances between the acidic carbon atom of the cation and the glucose carbon atom where ring closure and opening occurs are found, which are way shorter than dispersion-like interactions between aliphatic hydrocarbons.

Physical Chemistry Chemical Physics published new progress about Bending vibration. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Electric Literature of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nezam, Iman; Peereboom, Lars; Miller, Dennis J. published the artcile< Continuous condensed-phase ethanol conversion to higher alcohols: Experimental results and techno-economic analysis>, Name: 2-Ethylhexan-1-ol, the main research area is alumina supported nickel lanthanum oxide catalyst; ethanol conversion higher alc technoeconomic analysis.

The conversion of ethanol to n-butanol and higher alcs. is carried out in a continuous fixed bed reactor over a Ni/La2O3/γ-Al2O3 catalyst at 210-250°C and 100 bar. At these conditions, the reaction mixture is a condensed, near-critical phase that facilitates higher reaction rates than corresponding vapor phase reactions. Combined selectivity to n-butanol and C6+ higher alcs. reached 74% at 41% ethanol conversion. A process concept is presented in which n-butanol and mixed C6+ alcs. are produced as saleable products; ethanol is recycled to achieve nearly 100% overall conversion and minor byproducts are burned to provide process energy. A process design is conducted using aspen plus V8.4 process simulation software and economic analyses are carried out for several cases of ethanol conversion and alcs. selectivities. Several addnl. cases involving permutations of the base process configuration are also examined in attempts to improve process economics. At n-butanol selectivities achieved exptl., a facility producing 75 million kg n-butanol per yr has a total capital cost of 8.1 million with a required n-butanol selling price of .55/kg to .60/kg for typical values of expected return on investment.

Journal of Cleaner Production published new progress about Aliphatic alcohols Role: IMF (Industrial Manufacture), PREP (Preparation). 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

Jin, Bei; Wang, Jinguo; Xu, Fengxia; Li, Dianfeng; Men, Yong published the artcile< Hierarchical hollow WO3 microspheres with tailored surface oxygen vacancies for boosting photocatalytic selective conversion of biomass-derived alcohols>, Category: alcohols-buliding-blocks, the main research area is ierarchical hollow WO3 microspheres tailored surface oxygen vacancies; photocatalytic selective conversion biomass derived alc.

Selective conversion of biomass-derived alcs. into carbonyl compounds via visible-light photocatalysis is realized over hierarchical hollow WO3 microspheres with tailored surface oxygen vacancies, which presents the remarkably boosted photoactivity in terms of selectivity and activity, intrinsically attributing to the strong synergetic effect of hierarchical spherical cavity and surface oxygen vacancies simultaneously. The hierarchical spherical cavity, substantially constructed by the self-interconnected nanosheets, enhances the light-harvesting ability via multiple light reflections not only in spherical cavity but also among the self-interconnected nanosheets. Surface oxygen vacancies favor the energy band gap narrowing via forming a miniband just below the conduction band and then extend the photoresponse region, further boosting the light-harvesting ability. Importantly, surface oxygen vacancies function as the electron sinks to capture photoelectrons and thus restrict their recombination probability with holes, finally improving the photoelectron-hole separation efficiency. Meanwhile, this photocatalyst presents excellent reusability, showing its promising potential in practical applications. This work sheds light on a new application of hierarchical WO3 microspheres with tailored surface oxygen vacancies and its strong synergetic effect of hierarchical structures and surface oxygen vacancies on photocatalytic performance, delivering new insights for rationally designing highly active photocatalysts applied in future green and sustainable organic transformation reactions.

Applied Surface Science published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent) (biomass-derived). 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

Zou, Chun; Li, Ru-Yi; Chen, Jian-Xin; Wang, Fang; Gao, Ying; Fu, Yan-Qing; Xu, Yong-Quan; Yin, Jun-Feng published the artcile< Zijuan tea- based kombucha: Physicochemical, sensorial, and antioxidant profile>, COA of Formula: C8H18O, the main research area is Camellia sugar glucose sucrose beta linalool levomenthol anthocyanin antioxidant; Anthocyanins; Antioxidant activity; Attractive color; Kombucha; Zijuan tea.

Zijuan tea is a representative anthocyanin-rich tea cultivar in China. In this study, Zijuan tea was used to produce a novel kombucha beverage (ZTK). The physicochem., sensory properties, and antioxidant activity of ZTK were compared with that of black tea kombucha (BTK) and green tea kombucha (GTK). Results indicated that after fermentation, the color of ZTK changed from yellowish-brown to salmon-pink, because its anthocyanins (4.5 mg/L) appeared red in acidic conditions. Meanwhile no significant changes of color were observed in BTK and GTK. The dynamic changes of pH, biomass, and concentrations of sugars, amino acids, and main organic acids were similar in three kombucha beverages, except catechins showing different trends. Moreover, ZTK showed the highest overall acceptability score, antioxidant activity, and concentration of volatiles among the three kombucha beverages. Therefore, Zijuan tea is suitable for the preparation of kombucha beverage with attractive color and health benefits.

Food Chemistry published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts