Author: tianli

Wang, Ze-Shu; Chen, Yang-Bo; Wang, Kun; Xu, Zhou; Ye, Long-Wu published the artcile< One-pot synthesis of 2-hydroxymethylindoles via photoredox-catalyzed ketyl-ynamide coupling/1,3-allylic alcohol transposition>, SDS of cas: 5344-90-1, the main research area is benzoyl arylethynyl alkylsulfonamide iridium photocatalyst regioselective coupling reaction; hydroxymethylindole preparation.

An efficient visible-light-mediated ketyl-ynamide coupling by employing ynamides bearing alkyl sulfonyl substituents to deliver eneindolin-3-ols was developed. Subsequent 1,3-transposition of allylic alcs. in one pot was capable of synthesizing 2-hydroxymethylindoles in generally moderate to good yields. The synthetic utility of this protocol was also demonstrated by the facile and practical synthesis of two bioactive mols. The use of readily available substrates, a simple procedure and benign reaction conditions render this method a viable alternative for the synthesis of 2-hydroxymethylindoles.

Green Chemistry published new progress about Alkynes, aryl Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, SDS of cas: 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhu, JianCai; Niu, Yunwei; Xiao, ZuoBing published the artcile< Characterization of the key aroma compounds in Laoshan green teas by application of odour activity value (OAV), gas chromatography-mass spectrometry-olfactometry (GC-MS-O) and comprehensive two-dimensional gas chromatography mass spectrometry (GC x GC-qMS)>, Electric Literature of 78-70-6, the main research area is nonanol decanal skatole furaneol Laoshan green tea aroma olfactometry; Characteristic aroma compound; Comprehensive two-dimensional gas chromatography mass spectrometry (GC × GC-qMS); Laoshan green tea; Odor activity value (OAV); S-curve.

To investigate the key aroma compounds in Laoshan green teas (Huangshan (S1), Changling (S2), and Fangling (S3)), gas chromatog.-mass spectrometry-olfactometry (GC-MS-O), a flame photometric detector (FPD), odor activity value (OAV), and comprehensive two-dimensional gas chromatog. mass spectrometry (GC x GC-qMS) were employed. A total of 50 aroma compounds were perceived and 24 compounds were identified as important compounds related to OAV, such as di-Me sulfide (OAV: 126-146), skatole (OAV: 27-50), furaneol (OAV: 8-27), (Z)-jasmone (OAV: 16-23), 2-methylbutanal (OAV: 15-22), and 3-methylbutanal (OAV: 68-87). Furthermore, the S-curve method was used to research the effect of aroma compounds on the threshold of aroma recombination (AR). The AR thresholds decreased from 3.8 mL to 0.45, 0.66, 0.93, 0.95, 0.75, 1.09, 3.01, and 2.57 mL after addition of eight compounds (skatole, furaneol, (Z)-jasmone, α-damascenone, sclareololide, dihydroactinidiolide, vanillin, and δ-valerolactone), indicating that those compounds (OAV >1) were contributors to the overall aroma of Laoshan teas.

Food Chemistry published new progress about Flame photometric detectors. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Electric Literature of 78-70-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bheeter, Linus P.; Henrion, Mickael; Brelot, Lydia; Darcel, Christophe; Chetcuti, Michael J.; Sortais, Jean-Baptiste; Ritleng, Vincent published the artcile< Hydrosilylation of aldehydes and ketones catalyzed by an N-heterocyclic carbene-nickel hydride complex under mild conditions>, Safety of (1-Methyl-1H-pyrrol-2-yl)methanol, the main research area is nitrogen heterocyclic carbene nickel hydride preparation mol crystal structure; aldehyde hydrosilylation nitrogen heterocyclic carbene nickel hydride complex catalyst; ketone hydrosilylation nitrogen heterocyclic carbene nickel hydride complex catalyst; alc preparation.

Half-sandwich N-heterocyclic carbene (NHC)-nickel complexes of the general formula [Ni(NHC)ClCp1] (Cp1 = Cp, Cp*) efficiently catalyze the hydrosilylation of aldehydes and ketones at room temperature in the presence of a catalytic amount of sodium triethylborohydride and thus join the fairly exclusive club of well-defined nickel(II) catalyst precursors for the hydrosilylation of carbonyl functionalities. Of notable interest is the isolation of an intermediate nickel hydride complex that proved to be the real catalyst precursor.

Advanced Synthesis & Catalysis published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 52160-51-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H9NO, Safety of (1-Methyl-1H-pyrrol-2-yl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Canellas, Natalia O. A.; Olivares, Fabio L.; Canellas, Luciano P. published the artcile< Metabolite fingerprints of maize and sugarcane seedlings: searching for markers after inoculation with plant growth-promoting bacteria in humic acids>, Category: alcohols-buliding-blocks, the main research area is metabolite fingerprint biostimulant seedling Zea Saccharum.

Background: The neg. consequences of industrial agriculture greatly affect human health and the environment. Debating our dietary requirements and challenging the means of food production are necessary. In the first years of transitioning to agroecol. production, crop yields normally decrease. Humic acids and beneficial bacteria used as plant growth promoters can be helpful during this stressful time. Metabolite target identification will aid in increasing plant responses to these agents. Materials: We evaluated the metabolite fingerprints of maize and sugarcane seedlings after 5 days of treatment with like-humic acids isolated from vermicompost coupled with a combined Herbaspirillum seropedicae and Gluconacetobacter diazotrophicus application. The hydromethanolic foliar extracts were submitted for 1H NMR anal., and the data were explored using chemometrics procedures. After the preliminary screening, the extracts were analyzed by gas chromatog. coupled to time of flight mass spectrometry to identify metabolite targets. Results: The biostimulant significantly changed the metabolic fingerprints independent of the plant species. The main proton spectral regions changed by biostimulant use were from 0 to 2.5 ppm and 3.5 to 5 ppm, as revealed by a principal component anal. The main signals corresponded to amino acid, sugar and organic acid chem. shifts. Aspartic acid was the amino acid present in greatest amounts in both leaf extracts A significant change occurred in the region normally attributed to (CHn)-protons bound to electron-withdrawing groups, such as carboxyls from mucic, ribonic and saccharic acids derived from sugars and aromatic structures from shikimic acid, 4-hydroxybenzoate and 3,4-dihydroxycinnamic acid. The main organic acids altered by the biostimulant were representatives of the tricarboxylic acid cycle (citric, isocitric, aconitic, malic and fumaric acids). Linoleic and myristic acids, 1-mono palmitin and tocopherol were the major lipid components found at greater levels in the treated leaf extracts Compounds from the oxidative end products of ascorbic acid metabolism, like threonic, isothreonic and oxalic acids, are putative biomarkers of the biostimulant as are the cyclic polyol identified as quinic acid and trehalose, a disaccharide involved in plant stress responses. Conclusion: The biostimulant induced significant changes in the metabolite fingerprints of maize and sugarcane seedlings as revealed by NMR. Both primary and secondary metabolisms were affected, and 22 putative biomarkers associated with the biostimulant-treated plant phenotype were identified. This agrees with previous work indicating that the stimulation of primary and secondary metabolisms was partially responsible for biostimulant effects on non-leguminous plants. Moreover, these metabolite targets could be used to genetically manipulate metabolic pathways to aid Poaceae breeding programs in increasing biostimulative responses.

Chemical and Biological Technologies in Agriculture published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Lin; Zhao, Xue; Wu, Ji’en; He, Yun; Yang, Hongshun published the artcile< Metabolic analysis of salicylic acid-induced chilling tolerance of banana using NMR>, Related Products of 492-62-6, the main research area is banana salicylic acid metabolic analysis; Cold injury; Energy status; Fruit; Metabolomics; Omics; Pathway; Principal component analysis; Salicylic acid.

Banana is highly susceptible to low temperature and salicylic acid (SA) can effectively improve the chilling tolerance. The metabolic changes of SA induced chilling responses of banana were studied. Bananas normally ripened under 15°C and dramatic metabolic difference compared with other groups was recorded. Accumulation of glucose (>1.5 folds) and consumption of unsaturated fatty acids (11.0-16.5%) were observed The glycolysis was induced to compensate the decreased energy charge. Low temperature (6°C) caused chilling damage and metabolites including glutamine, serine, and glucose were related to chilled bananas. Various physiol. changes such as sugar metabolism and consumption of reducing substances occurred to adapt the cold stress. SA released the cold injury and the disaccharides were increased by 18.1-21.4%. Further anal. revealed the synthesis of unsaturated fatty acids, amino acids such as proline, and enhanced energy charge. Thus, SA increased the chilling tolerance via a number of different metabolic mechanisms.

Food Research International published new progress about Banana. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Related Products of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Martinez-Ferrate, Oriol; Chatterjee, Basujit; Werle, Christophe; Leitner, Walter published the artcile< Hydrosilylation of carbonyl and carboxyl groups catalysed by Mn(I) complexes bearing triazole ligands>, Recommanded Product: 1-(4-Fluorophenyl)ethyl Alcohol, the main research area is alc preparation; ketone ester carboxyl hydrosilylation manganese triazole ligand catalyst.

Manganese(I) complexes bearing triazole ligands are reported as catalysts for the hydrosilylation of carbonyl and carboxyl compounds The desired reaction proceeds readily at 80° within 3 h at catalyst loadings as low as 0.25 to 1 mol%. Hence, good to excellent yields of alcs. could be obtained for a wide range of substrates including ketones, esters, and carboxylic acids illustrating the versatility of the metal/ligand combination.

Catalysis Science & Technology published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Recommanded Product: 1-(4-Fluorophenyl)ethyl Alcohol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vega-Rojas, Lineth Juliana; Luzardo-Ocampo, Ivan; Mosqueda, Juan; Palmerin-Carreno, Dulce Maria; Escobedo-Reyes, Antonio; Blanco-Labra, Alejandro; Escobar-Garcia, Konisgmar; Garcia-Gasca, Teresa published the artcile< Bioaccessibility and in vitro intestinal permeability of a recombinant lectin from Tepary bean (Phaseolus acutifolius) using the everted intestine assay>, SDS of cas: 492-62-6, the main research area is Phaseolus acutifolius lectin tepary bean intestinal permeability bioaccessibility; Tepary bean (Phaseolus acutifolius); apparent permeability; bioaccessibility; ex vivo everted intestine assay; in vitro and ex vivo gastrointestinal digestion; recombinant lectin.

Tepary bean (Phaseolus acutifolius) lectins exhibit differential in vitro and in vivo biol. effects, but their gastrointestinal interactions and digestion have not yet been assessed. This work aimed to evaluate the changes of a recombinant Tepary bean lectin (rTBL-1) through an in vitro and ex vivo gastrointestinal process. A polyclonal antibody was developed to selectively detect rTBL-1 by Western blot (WB) and immunohistochem. anal. Everted gut sac viability was confirmed until 60 min, where protein bioaccessibility, apparent permeability coefficient, and efflux ratio showed rTBL-1 partial digestion and absorption. Immunoblot assays suggested rTBL-1 internalization, since the lectin was detected in the digestible fraction. The immunohistochem. assay detected rTBL-1 presence at the apical side of the small intestine, potentially due to the interaction with the intestinal cell membrane. The in silico interactions between rTBL-1 and some saccharides or derivatives showed high binding affinity to sialic acid (-6.70 kcal/mol) and N-acetylglucosamine (-6.10 kcal/mol). The ultra-high-performance liquid chromatog.-electron spray ionization-quant. time-of-flight coupled to mass spectrometry (UHPLC-ESI-QTOF/MS) anal. showed rTBL-1 presence in the gastric content and the non-digestible fraction after intestinal simulation conditions. The results indicated that rTBL-1 partially resisted the digestive conditions and interacted with the intestinal membrane, whereas its digestion allowed the absorption or internalization of the protein or the derivative peptides. Further purification of digestion samples should be conducted to identify intact rTBL-1 protein and digested peptides to assess their physiol. effects.

International Journal of Molecular Sciences published new progress about Absorption. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, SDS of cas: 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lan, Xiao-Bing; Ye, Zongren; Huang, Ming; Liu, Jiahao; Liu, Yan; Ke, Zhuofeng published the artcile< Nonbifunctional Outer-Sphere Strategy Achieved Highly Active α-Alkylation of Ketones with Alcohols by N-Heterocyclic Carbene Manganese (NHC-Mn)>, Synthetic Route of 5344-90-1, the main research area is ketone alc NHC manganese alkylation catalyst; alkylated ketone preparation; amino benzyl alc ketone NHC manganese Friedlander annulation catalyst; quinoline preparation.

The unusual nonbifunctional outer-sphere strategy was successfully utilized in developing an easily accessible N-heterocyclic carbene manganese (NHC-Mn) system for highly active α-alkylation of ketones with alcs. This system was efficient for a wide range of ketones and alcs. under mild reaction conditions, and also for the green synthesis of quinoline derivatives The direct outer-sphere mechanism and the high activity of the present system demonstrate the potential of nonbifunctional outer-sphere strategy in catalyst design for acceptorless dehydrogenative transformations.

Organic Letters published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Synthetic Route of 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Huai-Wei; Wu, Jia-Xue; Huang, Xian-Qiang; Li, Da-Cheng; Wang, Su-Na; Lu, Yi; Dou, Jian-Min published the artcile< RhIII-Catalyzed C-H N-Heteroarylation and Esterification Cascade of Carboxylic Acid with Organoboron Reagents and 1,2-Dichloroethane in One-Pot Synthesis>, Application of C12H18BNO2, the main research area is aryl carboxylic acid heteroaromatic boronate heteroarylation esterification cascade rhodium.

A RhIII-catalyzed C(sp2)-H N-heteroarylation and esterification cascade of aryl carboxylic acids with N-heteroaromatic boronates and 1,2-dichloroethane in a one-pot synthesis has been disclosed. The strong coordinating ability of ortho- and meta-substituted pyridine boronates and pyrazoles as well as unsubstituted pyrimidine allows them to serve as the coupling partners. This protocol allows late-stage modification of the key precursor of roflumilast and compounds of pharmaceutical interest, which highlights the potential application of this synthetic method.

Organic Letters published new progress about Aromatic carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 660867-80-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C12H18BNO2, Application of C12H18BNO2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rozi, Parhat; Abuduwaili, Aytursun; Mutailifu, Paiheerding; Gao, Yanhua; Rakhmanberdieva, Rano; Aisa, Haji Akber; Yili, Abulimiti published the artcile< Sequential extraction, characterization and antioxidant activity of polysaccharides from Fritillaria pallidiflora Schrenk>, Safety of (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Fritillaria polysaccharide extraction antioxidant activity property; Antioxidant activity; Characterization; Fritillaria pallidiflora schrenk; Polysaccharide.

In this paper, Fritillaria pallidiflora schrenk polysaccharides were extracted with different methods and isolated by anion-exchange and gel-permeation chromatog. Physicochem. properties, structural characteristics and antioxidant activities were investigated for the first time. The polysaccharides composed of glucose, galactose, arabinose, xylose, mannose and rhamnose with different molar ratio and mol. weight Fourier transform IR spectroscopy and NMR anal. exhibited the presence of key functional groups of polysaccharides whereas SEM anal. revealed the characteristic morphol. of different fractions. The thermogravimetric anal. manifested the thermal stability of polysaccharides. The reducing power and antioxidant activities of polysaccharides were evaluated in vitro. Among them, the acidic fraction FPSP-H2-1 has a strong antioxidant effect against DPPH, hydroxyl and ABTS free radicals. The results revealed the polysaccharide’s important role as potential natural antioxidant agents during the investigation and application of bioactive polysaccharide.

International Journal of Biological Macromolecules published new progress about Anion exchange. 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