Alcohols-buliding-blocks

On May 20, 2021, Liu, Kun; Chen, Kennedy S.; Sen, Dipankar; Yu, Hua-Zhong published an article.Computed Properties of 143-10-2 The title of the article was Ultrasensitive detection of total copper with an electrochemical biosensor built on the in cis coupling of hexynyl CLICK-17 DNAzyme with azido self-assembled monolayers. And the article contained the following:

New methods to detect Cu sensitively and specifically are of practical importance because of its presence in both ecol. and biol. systems. Herein, the authors report a newly selected DNAzyme, CLICK-17, which catalyzes the azide-alkyne cycloaddition reaction strictly dependent on the presence of Cu, as a superior transducer for electrochem. Cu quantitation. CLICK-17 offers the following notable advantages: it does not require the presence of an unstable reducing agent (detects both Cu(II) and Cu(I) in samples); it offers rapid detection owing to the fast in cis coupling kinetics; and, it generates no background because its catalytic activity strictly relies on the presence of Cu (signal-on). For performing electrochem. sensing, the DNAzyme efficiently couples to a binary 11-azido-1-undecanethiolate/octanethiolate monolayer on Au (N3C11S-/C8S-Au), which is then accurately quantitated by the cyclic voltammetric response of electrostatically bound [Ru(NH3)6]3+. As the neg. charges on the phosphate backbone of surface-bound 79nt-DNA strands (CLICK-17) are inclusively compensated by the multiply charged redox cations (e.g., [Ru(NH3)6]3+) at low ionic strength, the electrochem. signal is naturally amplified (∼ 30 folds). Thus constructed biosensor detects Cu(II) with a LOD of 3.5 nM and Cu(I) with a LOD of 0.8 nM, which is also free of background signals and highly specific against other metal ions. More importantly, the authors showed the successful application of this DNAzyme-based electrochem. sensor to determine Cu concentrations in natural ores from the mining industry, with performance comparable to the Au standard flame at. absorption spectrophotometry. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Computed Properties of 143-10-2

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On August 21, 2020, Forneris, Clarissa C.; Nguy, Andy K. L.; Seyedsayamdost, Mohammad R. published an article.Quality Control of H-Phg(4-OH)-OH The title of the article was Mapping and Exploiting the Promiscuity of OxyB toward the Biocatalytic Production of Vancomycin Aglycone Variants. And the article contained the following:

Vancomycin is one of the most important clin. antibiotics in the fight against infectious disease. Its biol. activity relies on three aromatic cross-links, which create a cup-shaped topol. and allow tight binding to nascent peptidoglycan chains. The cytochrome P 450 enzymes OxyB, OxyA, and OxyC have been shown to introduce these synthetically challenging aromatic linkages. The ability to utilize the P 450 enzymes in a chemo-enzymic scheme to generate vancomycin derivatives is appealing but requires a thorough understanding of their reactivities and mechanisms. Herein, we systematically explore the scope of OxyB biocatalysis and report installation of diverse diaryl ether and biaryl cross-links with varying macrocycle sizes and compositions, when the enzyme is presented with modified vancomycin precursor peptides. The structures of the resulting products were determined using one-dimensional/two-dimensional NMR spectroscopy, high-resolution mass spectrometry (HR-MS), tandem HR-MS, and isotopic labeling, as well as UV-visible light absorption and fluorescence emission spectroscopies. An exploration of the biol. activities of these alternative OxyB products surprisingly revealed antifungal properties. Taking advantage of the promiscuity of OxyB, we chemo-enzymically generated a vancomycin aglycon variant containing an expanded macrocycle. Mechanistic implications for OxyB and future directions for creating vancomycin analog libraries are discussed. The experimental process involved the reaction of H-Phg(4-OH)-OH(cas: 32462-30-9).Quality Control of H-Phg(4-OH)-OH

The Article related to oxyb monooxygenase vancomycin aglycon variant, biosynthesis, chemo-enzymatic synthesis, macrocycles, vancomycin, Placeholder for records without volume info and other aspects.Quality Control of H-Phg(4-OH)-OH

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On February 25, 2021, Li, Zhuo; Wang, Bing; Cui, Guo-Yi; Zhang, Bing-Bing; Wang, Ya-Fei; Yang, Lin; Ma, Hai-Xia; Jiao, Lin-Yu; Pang, Ling-Yan; Ma, Xiao-Xun published an article.Formula: C8H8O3 The title of the article was Construction of novel trimeric π-interaction subphthalocyanine-sensitized titanium dioxide for highly efficient photocatalytic degradation of organic pollutants. And the article contained the following:

In this study, highly active TiO2 sensitized by a novel axial substituted subphthalocyanine H12SubPcB-OPHCH2COOH (SubPc-3) was successfully prepared via a solvothermal method. Based on the crystallog. strategy, a new packing motif of SubPc-3 consisting of ligand-convex concave-concave head-head π-interaction was discovered for the first time, which affected its catalytic performance significantly. Furthermore, the DFT and TD-DFT methods were used to study the electronic feature and excited-state properties in SubPc-3 utilizing an optimized structure. By examining the degradation of methyl orange (MO) and bromophenol blue (BB) under visible light, the photocatalytic activities of the nanocomposites were investigated. The photocatalytic degradation rate of MO and BB degradation with TiO2/SubPc-3 are 97.8% and 99.5%, which are approx. 5.26 and 1.41 times compared to pure TiO2, resp. Besides, the reusability studies indicated that the photocatalytic activity of TiO2/SubPc-3 (25:1) could be maintained above 90.1% after five circulating photo-degradation This work revealed the correlation between π-interaction of sensitizer and photocatalytic performance, as well as further confirmed the great potential of TiO2/SubPc-3 photocatalytic materials in environmental remediation. The experimental process involved the reaction of 3-Hydroxyphenylacetic acid(cas: 621-37-4).Formula: C8H8O3

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On May 13, 2022, Cechanaviciute, Ieva A.; Bobrowski, Tim; Jambrec, Daliborka; Krysiak, Olga A.; Brix, Ann Cathrin; Braun, Michael; Quast, Thomas; Wilde, Patrick; Morales, Dulce M.; Andronescu, Corina; Schuhmann, Wolfgang published an article.Category: alcohols-buliding-blocks The title of the article was Aerosol-Based Synthesis of Multi-metal Electrocatalysts for Oxygen Evolution and Glycerol Oxidation. And the article contained the following:

Discovery of new catalysts is crucial for future growth and development of environmentally friendly energy conversion processes e. g. the production of hydrogen by water electrolysis. We developed an aerosol-based synthesis technique as a comparatively fast and facile method to prepare multi-metal catalysts. 22 different quinary metal compositions were synthesized and investigated with respect to their activity for the oxygen evolution (OER) and the glycerol oxidation (GOR) reactions. The impact of the element composition and the homogeneous distribution of the elements in the particles on catalytic performance were evaluated. The highest activity for OER was found for Co20Cu20Ni20Fe20Zn20. For GOR, Ag-containing catalysts were the most active, however, in most cases Ag was locally enriched and not homogeneously mixed with the other metals in the particles. Ag-based catalysts outperformed similar compositions containing one or more noble metals. The GOR selectivity of selected catalysts during long-term electrolysis was also investigated and it was shown that varying the catalyst composition via aerosol-based synthesis is a potential way to modulate the GOR selectivity. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Category: alcohols-buliding-blocks

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Shukla, Ila; Azmi, Lubna; Rao, Ch. V.; Jawaid, Talha; Kamal, Mehnaz; Alkhamees, Osama A.; Alaseem, Ali M.; Alsanad, Saud M. published an article in 2022, the title of the article was Inclusive roles of protocetraric acid, a secondary metabolite from the common green shield lichen Flavoparmelia caperata in alcohol-induced hepatic injury.Safety of 2,3-Dihydroxypropanoic acid And the article contains the following content:

Flavoparmelia caperata belongs to the family Parmeliaceae which is a huge family of lichens and comprises of species that draw much attention about pharmacol. activities. Several medicinally important compounds have been reported in this lichen. Protocetraric acid is among the major metabolites possessed by this lichen. Hence, the present study is designed to look into the more inclusive role of protocetraric acid in case of alc.-induced hepatotoxicity in rats. Thirty rats were randomly divided into six groups: Group 1 served as the control group, Group 2 received ethanol, Group 3 received F. caperata ethanolic extract (FCE) 50 mg/kg, Group 4 received FCE 100 mg/kg, Group 5 received FCE 200 mg/kg and Group 6 received Liv.52 (Standard drug). At the end of the experiment, biochem. parameters, oxidative stress markers, inflammatory mediators, caspase-3 and 8 activities were studied. The liver tissues were further examined histopathol. for localization of areas of severe hepatotoxicity. Cell viability was determined by using the MTT assay in MCF-7 and HepG2 cells. Moreover, FCE increased cell viability. Protocetraric acid, erythritol, and myo-inositol were detected in GC-MS anal. The outcomes of this study reveal that FCE may prove to be supportive in the treatment of alc.-induced hepatotoxicity and oxidative stress. Results of different markers have revealed that among all, FCE (100 mg/kg) has demonstrated the best hepatoprotective activity. It also ameliorated the morphol. changes induced by alc. These observations speak about the significance of the components of the lichen extract The corrective action of FCE in alc.-induced liver damage may be due to its antioxidant, anti-inflammatory, and anti-apoptotic activities. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Safety of 2,3-Dihydroxypropanoic acid

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Benoite, T.; Vigasini, Nora published an article in 2021, the title of the article was Antioxidant and antidiabetic activities of ethanolic extract of Hibiscus sabdariffa calyx and Stevia rebaudiana leaf.Safety of 2,4-Di-tert-butylphenol And the article contains the following content:

The prevalence of diabetes mellitus has increased tremendously in developing countries of tropical regions. The need for an effective and safe alternative is of importance as oral hypoglycemic drugs have reported to cause side effects on prolonged use. In the present study two tropical plants, Hibiscus sabdariffa calyx and Stevia rebaudiana leaves were assessed for their in vitro antioxidant and antidiabetic activities. Total phenol and flavonoids of ethanolic extracts were quantified. Bioactive compounds were screened by Gas Chromatog. Mass Spectrometry (GC-MS) anal. Antioxidant activity was assessed by 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) and superoxide radical scavenging assays. Antidiabetic ability was evaluated by inhibition of enzymes involved in carbohydrate metabolism Glucose uptake by 3T3-L1 cells was also assessed. Ethanolic extract of Stevia leaf (EtSL) had a higher percentage of phenol and flavonoids. The GC-MS anal. showed the presence of phytochems. like Phenol-2,4-bis (1,1-dimethylethyl) in Roselle calyx and 6-methoxyflavone in Stevia leaves. The antioxidant assessment showed that EtSL significantly inhibited superoxide radical (IC50 = 45.81±1.21 μg/mL). The antidiabetic assessment revealed that Ethanolic extract of Roselle calyx (EtRC) showed strong inhibition of alpha amylase (IC50 = 27.95±0.32 μg/mL) and alpha glucosidase (IC50 = 6.21±0.18 μg/mL). Glucose uptake in 3T3-L1 cells demonstrated that both plants had significant insulin sensitizing ability. It was also revealed that the phenol and flavonoid content strongly correlated with IC50 values of antioxidant and antidiabetic assays. Results of this study show that both plants are a potential source of bioactive phytochems. and can be used as a plant-based antioxidant and antidiabetic agent. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Safety of 2,4-Di-tert-butylphenol

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Mohamedshah, Zulfiqar; Hayes, Micaela; Chadwick-Corbin, Sydney; Neilson, Andrew P.; Ferruzzi, Mario G. published an article in 2022, the title of the article was Bioaccessibility, gut microbial metabolism and intestinal transport of phenolics from 100% Concord grape juice and whole grapes are similar in a simulated digestion and fecal fermentation model.Recommanded Product: 3-Hydroxyphenylacetic acid And the article contains the following content:

Phenolic rich 100% grape juice has been associated with many health benefits, but its place in dietary guidance is controversial relative to whole fruit. Direct comparisons of phenolic profiles and bioavailability between these food forms are needed. Phenolic bioaccessibility and metabolism from Concord (CG) and Niagara (NG) grapes and corresponding 100% juices were investigated using an in vitro digestion coupled with anaerobic gut fermentation model. Intestinal transport of resulting bioaccessible phenolics and microbial metabolites was estimated using a Caco-2 cell model. Total bioaccessible phenolics from both upper and lower digestion were similar (P > 0.05) between NG (400.9 ± 26.3 μmol per 100 g) and NGJ (349.5 ± 8.3 μmol per 100 g) and significantly different (P < 0.05) between CG (417.2 ± 24.4 μmol per 100 g) and CGJ (294.3 ± 45.4 μmol per 100 g) total cellular transport of phenolics was similar (P > 0.05) between whole grapes (89.4 ± 5.3 μmol per 100 g for CG, and 71.8 ± 2.4 μmol per 100 g for NG) and 100% juices (88.0 ± 5.6 μmol per 100 g for CGJ, and 85.3 ± 9.4 μmol per 100 g for NGJ). Differences were observed between the location of phenolic metabolism, bioaccessibility and subsequent cellular transport of individual phenolics between grapes and juice matrixes. Specifically, greater amounts of phenolics were transported from grape juices than whole grapes from the upper tract. However, cumulative bioaccessibility and transport from upper and lower GI digestion/fermentation together indicates that the absorbable phenolics from 100% grape juice is similar to that of whole grapes, suggesting that phenolic-mediated health benefits from consumption of whole fruit and juice may be similar. The experimental process involved the reaction of 3-Hydroxyphenylacetic acid(cas: 621-37-4).Recommanded Product: 3-Hydroxyphenylacetic acid

The Article related to grape juice phenolics digestion fecal fermentation bioaccessibility gut microbiota, Placeholder for records without volume info and other aspects.Recommanded Product: 3-Hydroxyphenylacetic acid

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Liu, Man-yu; Shi, Ya-jing; Wang, Lan-zhi; Song, Hui-hua published an article in 2019, the title of the article was Syntheses, crystal structures and electrochemical properties of two chiral Cu complexes based on D(-)/L(+)-4-hydroxyphenylglycine.Safety of H-Phg(4-OH)-OH And the article contains the following content:

Two chiral coordination compounds based on D(-)/L(+)-4-hydroxyphenylglycine (D/L-Hhpg), {[Cu(D-hpg)(phen)(NO3)]·1.5H2O}n (1) and {[Cu(L-hpg)(phen)(NO3)]·2H2O}n (2) (phen=1,10-phenanthroline) have been synthesized and characterized by elemental anal., IR spectroscopy, powder X-ray diffraction, single-crystal X-ray diffraction, solid-state CD spectra and TG-DSC anal. Compounds 1 and 2 are orthorhombic, P212121 chiral space groups. They are 1D chain structure, which is extended into a 3D supramol. structure by the hydrogen bond. Interestingly, the compounds 1 and 2 exist left-handed or right-handed supramol. helix chains along the b axis direction by the hydrogen bond resp., which is extended by the hydrogen bond between coordinated nitrate anion and lattice water. Furthermore, based on the central metal ions of Cu(Π), further explored the compounds 1 and 2 of electrochem. properties, Anal. of cyclic voltammetry at varying scan rates (0.03 to 0.13 V·s-1) demonstrates a linear relationship between the anode peak current and the scan rate, indicating a surface-controlled electrochem. process. The experimental process involved the reaction of H-Phg(4-OH)-OH(cas: 32462-30-9).Safety of H-Phg(4-OH)-OH

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On March 31, 2022, Pozo-Martinez, Josue; Salgado, Francisco; Liempi, Ana; Kemmerling, Ulrike; Mera-Adasme, Raul; Olea-Azar, Claudio; Moncada-Basualto, Mauricio; Borges, Fernanda; Uriarte, Eugenio; Matos, Maria Joao published an article.SDS of cas: 621-37-4 The title of the article was Synthesis and study of the trypanocidal activity of catechol-containing 3-arylcoumarins, inclusion in β-cyclodextrin complexes and combination with benznidazole. And the article contained the following:

American trypanosomiasis or Chagas disease is caused by the protozoan parasite Trypanosoma cruzi, and is considered a neglected disease, being an important problem for public health. Benznidazole (BZN) is the drug used to treat the disease. However, it has limited efficacy and adverse side effects. Therefore, the development of new therapeutic alternatives is necessary. In this work, the trypanocidal activity and cytotoxicity of a series of catechol-containing 3-arylcoumarins, their combination with BZN, and the inclusion in β-cyclodextrins (β-CDs), were evaluated. The results obtained showed that the entire series has moderate trypanocidal activity on the trypomastigote form of the parasite, being the 3-(4′-bromophenyl)-6,7-dihydroxycoumarin (8) the most active compound (IC50 = 34 μM) and the most cytotoxic in Vero cells (IC50 = 162 μM) as well. By forming the inclusion complex 8-β-CDs, the trypanocidal activity and cytotoxicity decreased. In addition, the formation of inclusion complexes increased the solubility The possible mechanism of action of 8 was evaluated and proved to be through the generation of oxidative stress. The combination with BZN presented a synergistic effect on the trypanocidal activity, reducing the necessary dose of BZN. The presence of a catechol in the studied scaffold seems to modulate the trypanocidal activity, and the combination of drugs proved to be a promising alternative strategy for treating the disease. The experimental process involved the reaction of 3-Hydroxyphenylacetic acid(cas: 621-37-4).SDS of cas: 621-37-4

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On December 24, 2020, Ang, Chee Wei; Tan, Lendl; Sykes, Melissa L.; AbuGharbiyeh, Neda; Debnath, Anjan; Reid, Janet C.; West, Nicholas P.; Avery, Vicky M.; Cooper, Matthew A.; Blaskovich, Mark A. T. published an article.Formula: C7H6F3NO The title of the article was Antitubercular and Antiparasitic 2-Nitroimidazopyrazinones with Improved Potency and Solubility. And the article contained the following:

Following the approval of delamanid and pretomanid as new drugs to treat drug-resistant tuberculosis, there is now a renewed interest in bicyclic nitroimidazole scaffolds as a source of therapeutics against infectious diseases. We recently described a nitroimidazopyrazinone bicyclic subclass with promising antitubercular and antiparasitic activity, prompting addnl. efforts to generate analogs with improved solubility and enhanced potency. The key pendant aryl substituent was modified by (i) introducing polar functionality to the methylene linker, (ii) replacing the terminal Ph group with less lipophilic heterocycles, or (iii) generating extended biaryl side chains. Improved antitubercular and antitrypanosomal activity was observed with the biaryl side chains, with most analogs achieved 2- to 175-fold higher activity than the monoaryl parent compounds, with encouraging improvements in solubility when pyridyl groups were incorporated. This study has contributed to understanding the existing structure-activity relationship (SAR) of the nitroimidazopyrazinone scaffold against a panel of disease-causing organisms to support future lead optimization. The experimental process involved the reaction of (6-(Trifluoromethyl)pyridin-3-yl)methanol(cas: 386704-04-7).Formula: C7H6F3NO

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