Month: October 2022

Chaudhuri, Susri Ray; Modak, Arindam; Bhaumik, Asim; Swarnakar, Snehasikta published the artcile< Phloroglucinol derivatives as potential anti-ulcer compound that inhibits matrix metalloproteinase-9>, Related Products of 4396-13-8, the main research area is antiulcer phloroglucinol derivative matrix metalloproteinase 9 gastric ulceration.

Three phloroglucinol based polyphenolic compounds have been synthesized and their potential efficacy against gastric ulceration in mice was investigated. Polyphenol (I, II, III) were synthesized through Vilsmeier-Haack formylation, Schiff-base condensation of diformyl- phloroglucinol with 4-amino salicylic acid and Duff formylation reactions resp. We administered indomethacin, a non-steroidal anti inflammatory drug (NSAID), to induce gastric ulceration in Balb/c mice and tested antiulcer efficacy of synthesized phloroglucinol derivatives The pathogenesis of NSAID-induced ulceration is known to be associated to upregulation of matrix metalloproteinase (MMP)-9. All derivatives of phloroglucinol were found to prevent gastric ulceration in mice through depletion of oxidative stress in gastric tissue. Phloroglucinol derivatives also possessed antioxidant activity and they suppressed antioxidant enzymes in gastric tissues to almost normalcy during gastroprotection. Compound III was found to be most efficient anti-ulcer agent among others that inhibited the MMP-9 activity near to control value during prevention of NSAID-induced gastric ulceration. Thus, new polyphenolic compounds derived from phloroglucinol have antioxidant as well as anti-ulcer activity. We conclude that phloroglucinol derivatives as potent anti-ulcer compound in prevention of indomethacin induced gastric ulceration via attenuation of MMP-9 activity.

International Journal of Pharmaceutical Applications published new progress about Antioxidants. 4396-13-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H6O5, Related Products of 4396-13-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Qincao; Zhu, Yin; Dai, Weidong; Lv, Haipeng; Mu, Bing; Li, Pengliang; Tan, Junfeng; Ni, Dejiang; Lin, Zhi published the artcile< Aroma formation and dynamic changes during white tea processing>, Product Details of C10H18O, the main research area is aroma compound white tea withering drying; Amino acid; Aroma; GC × GC-TOFMS; Glycosidically bound volatile; White tea.

The formation of and dynamic changes in aroma during white tea processing have not previously been systematically investigated. In this study, advanced comprehensive two-dimensional gas chromatog.-time-of-flight mass spectrometry was employed to investigate the mechanism of white tea aroma formation. A total of 172 volatiles were identified and mainly comprising endogenous volatiles, which displayed diverse change trends during the withering period. In this process, free aroma precursor amino acids and glycosidically bound volatiles (GBVs) were found to contribute to the formation of white tea aroma, with the differential expression of aroma-related key genes accounting for various accumulation of endogenous volatiles and GBVs. In addition, the drying was also shown to play an important role in the formation of white tea aroma. Our study provides the first characterization of white tea aroma formation and establishes a theor. basis for quality control during white tea processing operations.

Food Chemistry published new progress about Drying process. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Product Details of C10H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Soares da Costa, Diana; Sousa, Joao C.; Da Mesquita, Sandro; Petkova-Yankova, Nevena I.; Marques, Fernanda; Reis, Rui L.; Sousa, Nuno; Pashkuleva, Iva published the artcile< Bioorthogonal labeling reveals different expression of glycans in mouse hippocampal neuron cultures during their development>, Related Products of 5505-63-5, the main research area is glycan hippocampus neuron cell maturation glucose metabolism; glycosylation, biorthogonal chemistry, neuronal development, imaging..

The expression of different glycans at the cell surface dictates cell interactions with their environment and other cells, being crucial for the cell fate. The development of the central nervous system is associated with tremendous changes in the cell glycome that is tightly regulated. Herein, we have employed bioorthogonal Cu-free click chem. to image temporal distribution of different glycans in live mouse hippocampal neurons during their maturation in vitro. We show development-dependent glycan patterns with increased fucose and decreased mannose expression at the end of the maturation process. We also demonstrate that this approach is biocompatible and does not affect glycan transport although it relies on an administration of modified glycans. The applicability of this strategy to tissue sections unlocks new opportunities to study the glycan dynamics under more complex physiol. conditions.

Molecules published new progress about Carbohydrate transporters Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 5505-63-5 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H14ClNO5, Related Products of 5505-63-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hazra, Anindita; Das, Susmita published the artcile< Comparative metabolomics analysis and radical scavenging activity of Saraca asoca (Roxb.) de wilde flowers in different stages of maturity>, HPLC of Formula: 87-73-0, the main research area is Saraca flower maturity metabolomics radical scavenging.

The flower extracts of Saraca asoca were evaluated in their three different phenol. stages of flowering [bud (S1), mature (S2) and senescent (S3)] in terms of chem. composition and antioxidant activity. The GC/MS based fingerprinting led to identification of 85 metabolites, including 9 amino acids, 20 organic acids, 7 fatty acids, 20 sugar and sugar acids, 8 sugar alcs., 13 phenols and phenolic acids and 8 others compounds The three flowering stages showed prominent changes in their metabolite profile during the process of maturation of the flowering stages from bud to mature to senescence stages determined via GC/MS based metabolomics and chemometric approaches. The amounts and composition of metabolites in each stage showed statistically significant differences, which were reflected in their antioxidant capacities. The three phenol. stages showed antioxidant activities in a dose dependent manner, but the senescent stage showed highest superoxide radical scavenging activity (IC50 = 65.17 ± 2.647 mg/mL) and metal chelating effect (6.65 ± 0.331 mg/mL) in agreement with their high content of phenolic acids. These differences were strongly reproduced in the chemometric analyses (PCA, PLS-DA and s-PLS-DA), identifying the most distinctive features of the three flowering stages. This study might be beneficial to select the most potent flowering stage for incorporation in functional food.

Jordan Journal of Biological Sciences published new progress about Alditols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, HPLC of Formula: 87-73-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yuan, Li; Zhou, Mengmeng; Huang, Dawei; Wasan, Harpreet S; Zhang, Kai; Sun, Leitao; Huang, Hong; Ma, Shenglin; Shen, Minhe; Ruan, Shanming published the artcile< Resveratrol inhibits the invasion and metastasis of colon cancer through reversal of epithelial‑ mesenchymal transition via the AKT/GSK‑3β/Snail signaling pathway.>, Quality Control of 501-36-0 , the main research area is .

The identification of safe and effective drugs that inhibit tumor invasion and metastasis is required to improve the clinical outcome of patients with colon cancer. The present study aimed to investigate the inhibitory effects and possible mechanisms of action of resveratrol against the invasion and metastasis of colon cancer. AKT1‑knockdown SW480 and SW620 colon cancer cells were used to detect the effects of resveratrol on cell invasion and metastasis, as well as changes in the expression of epithelial‑mesenchymal transition (EMT) markers and serine/threonine kinase (AKT)/glycogen synthase kinase (GSK)‑3β/Snail signaling pathway‑related molecules in vitro. Furthermore, nude mice were inoculated with SW480 cells in the tail vein to establish an in vivo lung metastasis model of colon cancer, to investigate the effects of resveratrol on lung metastasis in colon cancer. The results revealed that resveratrol treatment and AKT1 knockdown significantly inhibited cell migration and invasion in colon cancer, and markedly increased E‑cadherin expression and decreased that of N‑cadherin, phospho (p)‑AKT1, p‑GSK‑3β, and Snail in colon cancer both in vitro and in vivo. Furthermore, the effects of resveratrol were significantly weaker in the AKT1‑knockdown cells. In conclusion, resveratrol may suppress the invasion and metastasis of colon cancer through reversal of EMT via the AKT/GSK‑3β/Snail signaling pathway. AKT1 may therefore be a key regulator of EMT in colon cancer cells and a potential therapeutic target for this disease.

Molecular medicine reports published new progress about 501-36-0 . 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, Quality Control of 501-36-0 .

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Molaei, Somayeh; Ghadermazi, Mohammad published the artcile< Heterogeneously catalyzed selective aerobic oxidation of sulfides with supported Dy on SBA-15 as recyclable catalyst under green condition>, COA of Formula: C8H10OS, the main research area is dysprosium oxopyrrolidine carboxylic acid silica catalyst sulfide green oxidation.

This manuscript presents a simple, efficient and environmentally benign room temperature aerobic catalytic process to the selective oxidation of sulfides to sulfoxides by Dy (III)-substituted 5-oxopyrrolidine-2-carboxylic acid (Glp) immobilized on SBA-15(SBA-15-Glp-Dy). The catalyst could be reused seven cycles without any loss in performance. This is the first selective aerobic oxidation of sulfides using a Dy-based heterogeneous system.

Solid State Sciences published new progress about Green chemistry. 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

Zhang, Bo; Yu, Pingfeng; Wang, Zijian; Alvarez, Pedro J. J. published the artcile< Hormetic promotion of biofilm growth by polyvalent bacteriophages at low concentrations>, Computed Properties of 492-62-6, the main research area is hormetic promotion biofilm growth polyvalent bacteriophages concentration.

Interactions between bacteriophages (phages) and biofilms are poorly understood despite their broad ecol. and water quality implications. Here, we report that biofilm exposure to lytic polyvalent phages at low concentrations (i.e., 102-104 phages/mL) can counterintuitively promote biofilm growth and densification (corroborated by confocal laser scanning microscopy (CLSM)). Such exposure hormetically upregulated quorum sensing genes (by 4.1- to 24.9-fold), polysaccharide production genes (by 3.7- to 9.3-fold), and curli synthesis genes (by 4.5- to 6.5-fold) in the biofilm-dwelling bacterial hosts (i.e., Escherichia coli and Pseudomonas aeruginosa) relative to unexposed controls. Accordingly, the biofilm matrix increased its polysaccharide and extracellular DNA content relative to unexposed controls (by 41.8 ± 2.3 and 81.4 ± 2.2%, resp.), which decreased biofilm permeability and increased structural integrity. This contributed to enhanced resistance to disinfection with chlorine (bacteria half-lives were 6.08 ± 0.05 vs 3.91 ± 0.03 min for unexposed controls) and to subsequent phage infection (biomass removal was 18.2 ± 1.2 vs 32.3 ± 1.2% for unexposed controls), apparently by mitigating diffusion of these antibacterial agents through the biofilm. Overall, low concentrations of phages reaching a biofilm may result in unintended biofilm stimulation, which might accelerate biofouling, biocorrosion, or other biofilm-related water quality problems.

Environmental Science & Technology published new progress about Antibacterial agents. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Computed Properties of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Xu-Teng; Han, Xue-Yu; Wu, Yue; Sun, Ying-Ying; Gao, Li; Huang, Zhuo; Zhang, Qing-Wei published the artcile< Ni-Catalyzed Asymmetric Hydrophosphination of Unactivated Alkynes>, Category: alcohols-buliding-blocks, the main research area is nickel catalyzed asym regioselective enantioselective hydrophosphination unactivated alkyne; phosphorus stereogenic tertiary phosphine preparation reaction; crystal mol structure alkenyl phosphine borane sulfide ruthenium platinum.

The practical synthesis of P-stereogenic tertiary phosphines, which have wide applications in asym. catalysis, materials, and pharmaceutical chem., represents a significant challenge. A regio- and enantioselective hydrophosphination using cheap and ubiquitous alkynes catalyzed by a nickel complex was designed, in which the toxic and air-sensitive secondary phosphines were prepared in situ from bench-stable secondary phosphine oxides. This methodol. has been demonstrated with unprecedented substrate scope and functional group compatibility to afford electronically and structurally diversified P(III) compounds The products could be easily converted into various precursors of bidentate ligands and organocatalysts, as well as a variety of transition-metal complexes containing both P- and metal-stereogenic centers.

Journal of the American Chemical Society published new progress about Alkynes Role: RCT (Reactant), RACT (Reactant or Reagent) (unactivated). 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Song, Ya; Zhu, Minqian; Hao, Huili; Deng, Jie; Li, Meiying; Sun, Yuanming; Yang, Ruili; Wang, Hong; Huang, Riming published the artcile< Structure characterization of a novel polysaccharide from Chinese wild fruits (Passiflora foetida) and its immune-enhancing activity>, Electric Literature of 3458-28-4, the main research area is Passiflora polysaccharide immune enhancement; Immune-enhancing activity; Passiflora foetida; Polysaccharide; Structure characterization.

A novel polysaccharide (PFP1) with an average mol. weight of 2.02 × 105 g/mol was isolated from Passiflora foetida fruits through hot water extraction, ethanol precipitation and column chromatog. The structure of PFP1 was determined by GPC-MALS-RI, IC, FT-IR, GC-MS and NMR. The structural anal. showed that PFP1 was a heteropolysaccharide and composed of mannose (48.83%), galactose (32.46%), glucose (6.21%), arabinose (5.88%), fructose (2.24%), galacturonic acid (2.20%), xylose (1.17%), fucose (0.17%), ribose (0.05%), and glucuronic acid (0.78%), with a backbone structure of →1)-α-D-Manp→1,2)-β-D-Manp-linked 1,2,6)-β-D-Manp residues and side chains consisted of →1)-β-D-Galp, →1,4)-α-D-Manp, →1, 4)-β-D-Glcp, →1,3)-α-D-Galp, →1,6)-β-D-Manp, →1,6)-β-D-Galp, →1,2,3)-β-D-Manp and →1,3,6)-β-D-Galp residues. The results of immune-enhancing assays revealed that PFP1 could obviously promote the production of NO and secretion of cytokines (TNF-α and IL-6) of macrophage RAW264.7. These findings demonstrate that P. foetida fruit polysaccharides can be utilized as a potential immune-enhancing functional food.

International Journal of Biological Macromolecules published new progress about Health food (functional). 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

Jafari, Fariba; Ghorbani-Choghamarani, Arash; Hasanzadeh, Neda published the artcile< Guanidine complex of copper supported on boehmite nanoparticles as practical, recyclable, chemo and homoselective organic-inorganic hybrid nanocatalyst for organic reactions>, Category: alcohols-buliding-blocks, the main research area is copper immobilized guanidine modified boehmite nanoparticle preparation thermal stability; nitrile copper guanidine modified boehmite nanoparticle catalyst homoselective cycloaddition; phenyl tetrazole preparation; sulfide copper guanidine modified boehmite nanoparticle catalyst chemoselective sulfoxidation; sulfinyl preparation.

Boehmite (BO) nanoparticles (NPs) were prepared via the injection of aqueous NaOH solution to aqueous aluminum nitrate solution at room temperature Afterwards, a new complex of copper was immobilized on BO-NPs (Cu-Guanidine@BO-NPs). This heterogeneous nanocatalyst was used as a practical, recyclable, chemo and homoselective nanocatalyst in the organic processes, i.e. the preparation of tetrazole five-membered heterocycles and chemoselective sulfoxidation of sulfides using H2O2 as oxidant. In this sense, the prepared nanocatalyst was characterized by AAS, N2 adsorption-desorption isotherms, WDX, EDS, SEM, and TGA techniques. The reusability of this catalyst was investigated in the described organic reactions for several runs without notable loss of its catalytic activity. Moreover, all of the tetrazole and sulfoxide derivatives were isolated in high Turn Over Number (TON) and Turn Over Frequency (TOF) numbers indicating the high activity and selectivity of Cu-Guanidine@BO-NPs in the described reactions.

Applied Organometallic Chemistry published new progress about [3+2] Cycloaddition reaction (homoselective). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts