Month: November 2022

Synthesis, characterization and antimicrobial activity of copper(II) complexes with hydrazone derived from 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde was written by Mezey, Reka-Stefana;Mathe, Istvan;Shova, Sergiu;Grecu, Maria-Nicoleta;Rosu, Tudor. And the article was included in Polyhedron in 2015.Recommanded Product: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride The following contents are mentioned in the article:

Pyridoxal isonicotinoyl hydrazone (HL) and its copper(II) complexes: [CuLCl(H₂O)₂] (1), [CuL(OAc)](H₂O) (2), [CuL(OAcac)] (3), [CuL(NO₃)](H₂O) (4), [CuL₂](H₂O) (5) were synthesized and characterized. The ligand was obtained by condensation of 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde (pyridoxal) hydrochloride with isonicotinoyl hydrazide. The characterization of the formed compounds was done by ¹H NMR, ¹³C NMR, UV-visible, IR and EPR spectroscopy as well by thermal studies and elemental anal. The crystal structure of HL was determined by single crystal x-ray diffraction studies. The microbiol. effect of the ligand and all five complexes against both Gram-pos. and Gram-neg. strains, Staphylococcus aureus ATTC 6538, Bacillus cereus ATCC 14579, Escherichia coli W3110 and Pseudomonas aeruginosa ATCC 9027 was tested. This study involved multiple reactions and reactants, such as 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5Recommanded Product: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride).

3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Recommanded Product: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Functionalized alkenyl side chains: a feasible strategy to improve charge transport and photovoltaic performance was written by Zheng, Bing;Liu, Juan;Pan, Xuexue;Zhang, Yu;Wang, Zaiyu;Liu, Feng;Wan, Meixiu;Huo, Lijun. And the article was included in Journal of Materials Chemistry in 2020.Application of 106-21-8 The following contents are mentioned in the article:

To pursue effective charge transport and high fill factor (FF) in photovoltaic devices, adopting ordered polymers with enhanced hole mobility is greatly desired. Currently, a popular strategy in improving charge transport has been applied by enforcing the coplanarity of fused-ring conjugated structures. However, their synthetic complexity hinders their further development. Here, an effective strategy is successfully developed to introduce soluble alkenyl side chains in D-A type photovoltaic polymer backbones to improve the charge transport ability and photovoltaic performance. The introduction of the trans-vinylene (CH=CH) linkage in alkenyl side chains strengthens the polymeric crystalline properties and charge transport ability, and further improves the photovoltaic performance. Meanwhile, a high FF of 0.73 can still be obtained for a device with a film thickness of 200 nm. The low cost, feasible chem. strategy could potentially be applied for other thickness-insensitive organic photovoltaic materials design. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Application of 106-21-8).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Application of 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bioaccessibility and bioactivities of phenolic compounds from roasted coffee beans during in vitro digestion and colonic fermentation was written by Wu, Hanjing;Liu, Ziyao;Lu, Peiyao;Barrow, Colin;Dunshea, Frank R.;Suleria, Hafiz A. R.. And the article was included in Food Chemistry in 2022.Reference of 27208-80-6 The following contents are mentioned in the article:

Bioaccessibility and bioactivity of phenolic compounds in coffee beans relate to roasting and digestion process. This study aimed to estimate phenolic content, antioxidant potential, bioaccessibility, and changes in short chain fatty acids (SCFAs) production during in vitro digestion and colonic fermentation of com. roasted (light, medium and dark) coffee beans. There was no significant difference found among all three different roasting levels. TPC and DPPH were enhanced 15 mg GAE/g and 60 mg TE/g during gastrointestinal digestion, resp. For colonic fermentation, the highest TPC and FRAP of all coffee beans was found at 2 and 4 h, resp. The gastric bioaccessibility of most of the phenolic compounds were relatively higher due to thermal phenolic degradation Total SCFAs production was only up to 0.02 mM because of thermal polysaccharide decomposition Light roasted beans exhibited relatively higher phenolic bioaccessibility, antioxidant activities and SCFAs production, which would be more beneficial to gut health. This study involved multiple reactions and reactants, such as (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6Reference of 27208-80-6).

(2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Reference of 27208-80-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Membrane model as key tool in the study of glutathione-s-transferase mediated anticancer drug resistance was written by Materon, Elsa M.;Shimizu, Flavio M.;Figueiredo dos Santos, Kevin;Nascimento, Gustavo F.;Geraldo, Vananelia P. N.;Oliveira, Osvaldo N. Jr;Faria, Ronaldo C.. And the article was included in Biomedicine & Pharmacotherapy in 2022.Reference of 923-61-5 The following contents are mentioned in the article:

Glutathione-s-transferase is believed to be involved in the resistance to chemotherapeutic drugs, which depends on the interaction with the cell membranes. In this study, we employed Langmuir monolayers of a mixture of phospholipids and cholesterol (MIX) as models for tumor cell membranes and investigated their interaction with the anticancer drugs cisplatin (CDDP) and doxorubicin (DOX). We found that both DOX and CDDP expand and affect the elasticity of MIX monolayers, but these effects are hindered when glutathione-s-transferase (GST) and its cofactor glutathione (GSH) are incorporated. Changes are induced by DOX or CDDP on the polarization-modulated IR reflection absorption spectroscopy (PM-IRRAS) data for MIX/GST/GSH monolayers, thus denoting some degree of interaction that is not sufficient to alter the monolayer mech. properties. Overall, the results presented here give support to the hypothesis of the inactivation of DOX and CDDP by GST and point to possible directions to detect and fight drug resistance. This study involved multiple reactions and reactants, such as (2R)-3-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dipalmitate (cas: 923-61-5Reference of 923-61-5).

(2R)-3-(((2-Aminoethoxy)(hydroxy)phosphoryl)oxy)propane-1,2-diyl dipalmitate (cas: 923-61-5) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Reference of 923-61-5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Novel chelators based on adamantane-derived semicarbazones and hydrazones that target multiple hallmarks of Alzheimer’s disease was written by Palanimuthu, Duraippandi;Wu, Zhixuan;Jansson, Patric J.;Braidy, Nady;Bernhardt, Paul V.;Richardson, Des R.;Kalinowski, Danuta S.. And the article was included in Dalton Transactions in 2018.COA of Formula: C8H10ClNO3 The following contents are mentioned in the article:

Alzheimer’s disease (AD) is characterized by multiple pathol. hallmarks, including β-amyloid aggregation, oxidative stress, and metal dys-homeostasis. In the absence of treatments addressing its multi-factorial pathol., the authors designed novel multifunctional adamantane-based semicarbazones and hydrazones (1-12) targeting AD hallmarks. Of these, 2-pyridinecarboxaldehyde (N-adamantan-1-yl)benzoyl-4-amidohydrazone (10) was identified as the lead compound, which demonstrated: pronounced iron chelation efficacy; attenuation of Cu^II-mediated β-amyloid aggregation; low cytotoxicity; inhibition of oxidative stress; and favorable characteristics for effective blood-brain barrier permeation. Structure-activity relationships revealed that pyridine-derived hydrazones represent a promising pharmacophore for future design strategies due to their ability to bind critical Fe^II pools. Collectively, the unique multifunctional activity of these agents provides a novel therapeutic strategy for AD treatment. This study involved multiple reactions and reactants, such as 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5COA of Formula: C8H10ClNO3).

3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride (cas: 65-22-5) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.COA of Formula: C8H10ClNO3

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Optimization of the extraction conditions of Nypa fruticans Wurmb. using response surface methodology and artificial neural network was written by Choi, Hee-Jeong;Naznin, Marufa;Alam, Badrul Md;Javed, Ahsan;Alshammari, Fanar Hamad;Kim, Sunghwan;Lee, Sang-Han. And the article was included in Food Chemistry in 2022.HPLC of Formula: 29106-49-8 The following contents are mentioned in the article:

In this study, we conducted response surface methodol. (RSM) and artificial neural network (ANN) to predict and estimate the optimized extraction condition of Nypa fruticans Wurmb. (NF). The effect of ethanol concentration (X1; 0-100%), extraction time (X2; 6-24 h), and extraction temperature (X3; 40-60 °C) on the antioxidant potential was confirmed. The optimal conditions (57.6% ethanol, 19.0 h extraction time, and 51.3 °C extraction temperature) of 2,2-diphenyl-1-1picrylhydrazyl (DPPH) scavenging activity, cupric reducing antioxidant capacity (CUPRAC) and ferric reducing antioxidant power (FRAP), total phenolic content (TPC), and total flavonoid contents (TFC) resulted in a maximum value of 62.5%, 41.95 and 48.39 μM, 143.6 mg GAE/g, and 166.8 CAE/g, resp. High-resolution mass spectroscopic technique was performed to profile phenolic and flavonoid compounds Upon analyzing, total 48 compounds were identified in NF. Altogether, our findings can provide a practical approach for utilizing NF in various bioindustries. This study involved multiple reactions and reactants, such as (2R,2’R,3R,3’R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-[4,8′-bichromane]-3,3′,5,5′,7,7′-hexaol (cas: 29106-49-8HPLC of Formula: 29106-49-8).

(2R,2’R,3R,3’R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-[4,8′-bichromane]-3,3′,5,5′,7,7′-hexaol (cas: 29106-49-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.HPLC of Formula: 29106-49-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Optimization of the Isopentenol Utilization Pathway for Isoprenoid Synthesis in Escherichia coli was written by Ma, Xiaoqiang;Liang, Hong;Pan, Qiuchi;Prather, Kristala L. J.;Sinskey, Anthony J.;Stephanopoulos, Gregory;Zhou, Kang. And the article was included in Journal of Agricultural and Food Chemistry in 2022.Recommanded Product: (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol The following contents are mentioned in the article:

Engineering microbes to produce isoprenoids can be limited by the competition between product formation and cell growth because biomass and isoprenoids are naturally derived from central metabolism Recently, a two-step synthetic pathway was developed to partially decouple isoprenoid formation from central carbon metabolism The pathway used exogenously added isopentenols as substrates. In the present study, we systematically optimized this isopentenol utilization pathway in Escherichia coli by comparing enzyme variants from different species, tuning enzyme expression levels, and using a two-stage process. Under the optimal conditions found in this study, ~300 mg/L lycopene was synthesized from 2 g/L isopentenol in 24 h. The strain could be easily modified to synthesize two other isoprenoid mols. efficiently (248 mg/L β-carotene or 364 mg/L R-(-)-linalool produced from 2 g/L isopentenol). This study lays a solid foundation for producing agri-food isoprenoids at high titer/productivity from cost-effective feedstocks. This study involved multiple reactions and reactants, such as (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol (cas: 367-93-1Recommanded Product: (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol).

(2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol (cas: 367-93-1) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Recommanded Product: (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Removal of 18 bisphenols co-present in aqueous media by effectively immobilized titania photocatalyst was written by Zener, Bostjan;Matoh, Lev;Rodic, Peter;Skufca, David;Heath, Ester;Lavrencic Stangar, Urska. And the article was included in Journal of Environmental Chemical Engineering in 2021.Quality Control of 4,4′-Methylenediphenol The following contents are mentioned in the article:

In recent years, the increasing demand for clean and potable water has created a need for efficient, cost-effective wastewater treatment. One of the most promising methods is heterogeneous photocatalysis due to its ability to mineralize organic mols. This paper describes the development of a flow-through packed bed reactor system based on a packed column comprising glass beads coated with com. available TiO2 (P25). The resulting deposited films and corresponding powders were characterized using thermal anal. (TGA-DSC-MS), X-ray diffraction (XRD), scanning/transmission electron microscopy (SEM/TEM), sp. surface area (BET) and XPS measurements. The photocatalytic efficiency of the reactor was tested by observing the degradation rate of Plasmocorinth B, an organic dye, and 18 bisphenols co-dissolved in deionized water and simulated wastewater under UV light. The developed photocatalytic reactor effectively removed organic dye and bisphenols from the aqueous medium using a combination of adsorption and photocatalysis. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Quality Control of 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Quality Control of 4,4′-Methylenediphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Quantitative Structure-Activity Relationship Modeling and Docking of Monoterpenes with Insecticidal Activity Against Reticulitermes chinensis Snyder and Drosophila melanogaster was written by Soares Rodrigues, Gabriela Cristina;dos Santos Maia, Mayara;Muratov, Eugene N.;Scotti, Luciana;Scotti, Marcus Tullius. And the article was included in Journal of Agricultural and Food Chemistry in 2020.Reference of 106-21-8 The following contents are mentioned in the article:

The goal of this study was to perform in silico identification of bioinsecticidal potential of 42 monoterpenes against Drosophila melanogaster and Reticulitermes chinensis Snyder. Quant. structure-activity relationship (QSAR) modeling was performed for both organisms, while docking and mol. dynamics were used only for Drosophila melanogaster. Neryl acetate has the lowest interaction energy (-87 kcal/mol) against active site of acetylcholinesterase, which is comparable to the ones of methiocarb and pirimicarb (-90 kcal/mol) and reported PDB binder 9-(3-iodobenzylamino)-1,2,3,4-tetrahydroacridine (-112.67 kcal/mol). Interaction stability was verified by mol. dynamics simulations and showed that the stability of ACHE active site complexes with three selected terpenes is comparable to the one of the pirimicarb and methiocarb. Overall, our results suggest that pulegone, citronellal, carvacrol, linalyl acetate, neryl acetate, citronellyl acetate, and geranyl acetate may be considered as a potential pesticide candidates. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Reference of 106-21-8).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Reference of 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Screening and characterization of potential α-glucosidase inhibitors from Cercis chinensis Bunge fruits using ultrafiltration coupled with HPLC-ESI-MS/MS was written by Hong, Yuan;Liao, Xiaoyan;Chen, Zilin. And the article was included in Food Chemistry in 2022.Application of 27208-80-6 The following contents are mentioned in the article:

A more accurate HPLC-MS screening method combining functional enzyme assay and affinity ultrafiltration screening assay was developed and applied for the screening of natural product inhibitors of α-glucosidase from Cercis chinensis Bunge fruits. The enzyme assay was conducted to prescreen botanical extracts, in which maltose was used as the substrate and detection object. That showed the Cercis chinensis Bunge fruits demonstrated higher α-glucosidase inhibitory activity (IC50 = 11.94 ± 1.23μg/mL) than acarbose (IC50 = 44.03 ± 4.37μg/mL) (n = 3, p < 0.05). Subsequently, twelve bioactive components targeting α-glucosidase were screened out and identified using affinity ultrafiltration coupled to liquid chromatog.-mass spectrometry. The known inhibitor, acarbose, was used as a pos. control and competitive ligand to eliminate false positives. Moreover, bindings of the twelve components to the active site of α-glucosidase were investigated via mol. docking, which further confirmed the results of the screening assay. This study involved multiple reactions and reactants, such as (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6Application of 27208-80-6).

(2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Application of 27208-80-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts