Month: November 2022

Blasco, Telmo published the artcileAn extended reconstruction of human gut microbiota metabolism of dietary compounds, Category: isoquinoline, the main research area is human gut microbiota metabolism diet phenol health.

Understanding how diet and gut microbiota interact in the context of human health is a key question in personalized nutrition. Genome-scale metabolic networks and constraint-based modeling approaches are promising to systematically address this complex problem. However, when applied to nutritional questions, a major issue in existing reconstructions is the limited information about compounds in the diet that are metabolized by the gut microbiota. Here, we present AGREDA, an extended reconstruction of diet metabolism in the human gut microbiota. AGREDA adds the degradation pathways of 209 compounds present in the human diet, mainly phenolic compounds, a family of metabolites highly relevant for human health and nutrition. We show that AGREDA outperforms existing reconstructions in predicting diet-specific output metabolites from the gut microbiota. Using 16S rRNA gene sequencing data of fecal samples from Spanish children representing different clin. conditions, we illustrate the potential of AGREDA to establish relevant metabolic interactions between diet and gut microbiota.

Nature Communications published new progress about Carbohydrates Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ye, Tao published the artcileComparison of iodinated trihalomethanes formation during aqueous chlor(am)ination of different iodinated X-ray contrast media compounds in the presence of natural organic matter, Recommanded Product: Diatrizoic Acid, the main research area is iodinated trihalomethane aqueous chlorination chloramination ICM media compound NOM; Chlor(am)ination; Disinfection by-products; Iodinated X-ray contrast media; Iodinated trihalomethanes.

Iodinated trihalomethanes (I-THMs) formation during chlorination and chloramination of five iodinated X-ray contrast media (ICM) compounds (iopamidol, iopromide, iodixanol, histodenz, and diatrizoate) in the presence of natural organic matter (NOM) was evaluated and compared. Chlorination and chloramination of ICM in the absence of NOM yielded only a trace amount of I-THMs, while levels of I-THMs were enhanced substantially in raw water samples. With the presence of NOM, the order with respect to the maximum yield of I-THMs observed during chlorination was iopamidol >> histodenz > iodixanol > diatrizoate > iopromide. During chloramination, I-THM formation was enhanced for hisodenz, iodixanol, diatrizoate, and iopromide. The order with respect to the maximum yield of I-THMs observed during chloramination was iopamidol > diatrizoate > iodixanol > histodenz > iopromide. With the exception of iopamidol, I-THM formation was favored at relatively low chlorine doses (≤100 μM) during ICM chlorination, and significant suppression was observed with high chlorine doses applied (>100 μM). However, during chloramination, increasing monochloramine dose monotonously increased the yield of I-THMs for the five ICM. During chlorination of iodixanol, histodenz, and diatrizoate, the yields of I-THMs exhibited three distinct trends as the pH increased from 5 to 9, while peak I-THM formation was found at circumneutral pH for chloramination. Increasing bromide concentration not only considerably enhanced the yield of I-THMs but also shifted the I-THMs towards bromine-containing ones and increased the formation of higher bromine-incorporated species (e.g., CHBrClI and CHBr2I), especially in chloramination. These results are of particular interest to understand I-THM formation mechanisms during chlorination and chloramination of waters containing ICM.

Water Research published new progress about Bromides Role: OCU (Occurrence, Unclassified), POL (Pollutant), OCCU (Occurrence). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Vytla, Devaiah published the artcileVisible-Light-Promoted Radical Cyclization of N-Arylvinylsulfonamides: Synthesis of CF3/CHF2/CH2CF3-Containing 1,3-Dihydrobenzo[c]isothiazole 2,2-Dioxide Derivatives, Safety of 4-Methoxy-N-methylaniline, the main research area is trifluoromethyl dihydrobenzoisothiazole dioxide preparation; arylvinylsulfonamide visible light promoted radical cyclization.

A photocatalyzed and highly efficient trifluoromethylation of N-arylvinylsulfonamides using com. available CF3SO2Cl as the trifluoromethyl radical source under blue LEDs is reported. The reaction proceeds through radical cyclization under mild conditions. An investigation of the substrate scope is performed to establish a general, synthetically useful protocol for the synthesis of novel trifluoromethylated 1,3-dihydrobenzo[c]isothiazole 2,2-dioxides in moderate to high yields. This method is also successfully applied for the synthesis of difluoromethylated and trifluoroethylated 1,3-dihydrobenzo[c]isothiazole 2,2-dioxides in good to excellent yields.

Synthesis published new progress about Benzisothiazoles Role: SPN (Synthetic Preparation), PREP (Preparation) (dioxides). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Safety of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Shaoke published the artcileA general and practical Ni-catalyzed C-H perfluoroalkylation of (hetero)arenes, Computed Properties of 151-10-0, the main research area is arene perfluoroalkyl iodide nickel perfluoroalkylation catalyst; perfluoroalkylated arene preparation.

A direct perfluoroalkylation of (hetero)arenes using the air- and moisture-stable complex (dppf)Ni(o-tol)Cl was developed (23 examples). The novel procedure allows for the synthesis of various fluorinated products and tolerates sensitive functional groups including aldehydes, free amino groups and several heterocycles.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent) ((hetero)). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Caboni, Pierluigi published the artcileMulti-platform metabolomic approach to discriminate ripening markers of black truffles (Tuber melanosporum), Recommanded Product: 1,3-Dimethoxybenzene, the main research area is Tuber metabolite; 1-octen-3-ol; Ascomycete; Dimethylsulfide; Food; Mass spectrometry; Metabolomics; Tuber melanosporum.

Black truffle is characterized by a black ascocarp and white veins. This hypogeous fruit body is known for its aroma. Understanding metabolic variation during ripening can shed light on truffle biol. In this work, the comprehensive polar metabolome and the volatile organic compounds of T. melanosporum were studied at different ripening stages by means of a metabolomic approach using GC-MS. Multivariate statistical data anal. indicated that the metabolic profile changed during ripening and that the metabolites that mostly discriminated truffles in the early ripening stages belonged to the classes of carbohydrates, while free fatty acids and amino acids, among which precursors of VOCs, characterized the late stages of ripening. Principal component anal. of the volatilome indicated that dimethylsulfide and dimethyldisulfide characterized most of the samples collected in Dec.-Jan., while 1-octen-3-ol samples collected in Feb.-March.

Food Chemistry published new progress about Aromatic compounds Role: ANT (Analyte), PRP (Properties), ANST (Analytical Study). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nakamura, Itaru published the artcileSynthesis of meta-Substituted Anilines via Copper-Catalyzed [1,3]-Methoxy Rearrangement, HPLC of Formula: 151-10-0, the main research area is methoxyaniline nucleophile copper catalyst methoxy rearrangement Michael addition cascade; meta substituted aniline preparation.

Meta-Substituted anilines were efficiently synthesized via copper-catalyzed [1,3]-methoxy rearrangement of N-methoxyanilines followed by Michael addition of nucleophiles to the in situ generated ortho-quinol imine. The present reaction exhibits excellent applicability of para-substituents, such as vinyl, methylthio, ester, and bromo, and carbon nucleophiles, such as 1,3,5-trimethoxybenzene, N-methylindole, and di-Me malonate. Thus, the present rearrangement can resolve problems stemming from oxidation reactions, such as the use of stoichiometric amounts of oxidants and low compatibility of electron-withdrawing groups.

Organic Letters published new progress about Anilines Role: SPN (Synthetic Preparation), PREP (Preparation) (meta-substituted). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, HPLC of Formula: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Reichle, Alexander published the artcileCopper(II)-photocatalyzed decarboxylative oxygenation of carboxylic acids, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is carboxylic acid copper photocatalyst decarboxylative oxygenation; ketone preparation; aldehyde preparation.

Showcasing the concept of light-induced homolysis for the generation of radicals, the CuII-photocatalyzed decarboxylative oxygenation of carboxylic acids with mol. oxygen as the terminal oxidant was described. Two CuII-carboxylate complexes with different coordination geometries were synthesized and characterized by X-ray anal., correlating their structure with their ability to initiate light-induced decarboxylations.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aldehydes Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chen, Zhou published the artcileHuman Odour Coding in the Yellow Fever Mosquito, Aedes aegypti, Computed Properties of 598-50-5, the main research area is odorant antennal olfactory sensilla Aedes.

Insects use their olfactory systems to obtain chem. information on mating partners, oviposition sites and food. The yellow fever mosquito Aedes aegypti, an important vector of human infectious diseases, shows strong preference for human blood meals. This study investigated the chem. basis of host detection by characterizing the neuronal responses of antennal olfactory sensilla of female Ae. aegypti to 103 compounds from human skin emanations. The effect of blood feeding on the responses of olfactory sensilla to these odorants was examined as well. Sensilla SBTII, GP, and three functional subtypes of SST (SST1, SST2, and SST3) responded to most of the compounds tested. Olfactory receptor neurons (ORNs) ′A′ and ′B′ in the trichoid sensilla, either activated or inhibited, were involved in the odor coding process. Compounds from different chem. classes elicited responses with different temporal structures and different response patterns across the olfactory sensilla. Except for their increased responses to several odorants, blood-fed mosquitoes generally evoked reduced responses to specific aldehydes, alcs., aliphatics/aromatics, ketones, and amines through the SST1, SST2, SBTI, SBTII and GP sensilla. The odorants eliciting diminished responses in female mosquitoes after blood feeding may be important in Ae. aegypti host-seeking activity and thus can be candidates for mosquito attractants in the process of this disease vector management.

Scientific Reports published new progress about Aedes aegypti Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Computed Properties of 598-50-5.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Reddy, G. Mahesh Kumar published the artcileDevelopment and validation of stability indicating UPLC method for the determination of diatrizoic acid related impurities in bulk and finished formulations, Application In Synthesis of 117-96-4, the main research area is diatrizoic acid finished formulation UPLC method stability development.

A simple, sensitive and stability indicating RP-UPLC method was developed and validated for the estimation of Diatrizoic acid and its related impurities in bulk and finished dosage forms by using Acquity UPLC CSH C18 (1.7μm 100*2.1 mm) column with 0.05% formic acid in milli-Q water and acetonitrile as mobile phase in gradient elution mode with a run time of 12 min at a wavelength of 238 nm. Drug was subjected to forced degradation and the samples were analyzed by the developed method to establish the stability indicating power of the method. The LOD values were 0.01, 0.009, 0.012, 0.011μ g mL-1 and the LOQ values were 0.04, 0.027, 0.035, 0.034μg mL-1 resp. for DTA and its 3 related substances. The average recovery values for DTA and impurities were found to be in the range of 97.4-101.9%. The developed method was linear over a range of 0.03- 0.3μg mL-1 for DTA impurities.

Journal of Applicable Chemistry (Lumami, India) published new progress about Acetonitriles Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application In Synthesis of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Baranov, Vladimir V. published the artcileNew aspects of reactions of methyl (thio)ureas with benzil, Application of 1-Methylurea, the main research area is perhydro dioxoloimidazole preparation; diphenylimidazolidine thione preparation.

New pathways of reaction between 1-methylthiourea or 1-methylurea and benzil bring about new derivatives of (2S*,3aR*,6aS*)-perhydro-3aH-[1,3]dioxolo[4,5-d]imidazole I [X = S, O] and racemic (4S*,5R*)-4-alkoxy-5-hydroxy-1-methyl-4,5-diphenylimidazolidine-2-thiones II [R = Me, Et, n-Pr, n-Bu, i-Bu]. Some of the obtained urea-and thiourea derivatives were characterized by X-ray diffraction, which showed their supramol. organization governed by the directionality of hydrogen bonds at the acceptor side C=O or C=S groups.

Mendeleev Communications published new progress about Imidazoles Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Application of 1-Methylurea.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem