Tag: M.W=150-200

Xu, Yuan published the artcileDesign, synthesis and evaluation of new 4-arylthiazole-2-amine derivatives as acetylcholinesterase inhibitors, Application In Synthesis of 104-01-8, the main research area is aryl thiazolamine preparation acetylcholinesterase inhibitor; Acetylcholinesterase inhibitor; Alzheimer’s disease; Molecular docking.

A series of new 4-arylthiazole-2-amine derivatives I (m = 1,2,3,4; n = 0,1; R1 = pyrrolidin-1-yl, piperidin-1-yl, 1-benzylpiperidin-4-yl, etc.; R2 = H, OMe; R3 = OMe; R4 = H, OMe) as acetylcholinesterase inhibitors (AChEIs) were designed and synthesized, Furthermore, their inhibitory activities against acetylcholinesterase in vitro were tested by Ellman spectrophotometry, and the results of inhibitory activity test showed that most of them had a certain acetylcholinesterase inhibitory activity in vitro. Moreover, the IC50 value of compound I (m = 3; n = 1; R1 = pyrrolidin-1-yl; R2 = H; R3 = OMe; R4 = OMe) was 0.66μM, which was higher than that of Rivastigmine and Huperzine-A as reference compounds, and it had a weak inhibitory effect on butyrylcholinesterase. The potential binding mode of above compound with AChE was investigated by the mol. docking, and the results showed that it was strongly bound up with AChE with the optimal conformation, in addition, their binding energy reached -11.27 Kcal*mol-1. At last, in silico mol. property of the synthesized compounds were predicted by using Molinspiration online servers. It can be concluded that the lead AChEIs above compound presented satisfactory drug-like characteristics.

Bioorganic & Medicinal Chemistry Letters published new progress about Alzheimer disease. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Application In Synthesis of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hwangbo, Nathan published the artcilePredictive Modeling of Alzheimer′s and Parkinson′s Disease Using Metabolomic and Lipidomic Profiles from Cerebrospinal Fluid, Name: 4-Methoxyphenylacetic acid, the main research area is cerebrospinal fluid metabolomic lipidomic profile Alzheimers Parkinsons disease; biomarker; cerebrospinal fluid; cross-sectional study; neurodegenerative disease; predictive modeling.

In recent years, metabolomics has been used as a powerful tool to better understand the physiol. of neurodegenerative diseases and identify potential biomarkers for progression. We used targeted and untargeted aqueous, and lipidomic profiles of the metabolome from human cerebrospinal fluid to build multivariate predictive models distinguishing patients with Alzheimers disease (AD), Parkinsons disease (PD), and healthy age-matched controls. We emphasize several statistical challenges associated with metabolomic studies where the number of measured metabolites far exceeds sample size. We found strong separation in the metabolome between PD and controls, as well as between PD and AD, with weaker separation between AD and controls. Consistent with existing literature, we found alanine, kynurenine, tryptophan, and serine to be associated with PD classification against controls, while alanine, creatine, and long chain ceramides were associated with AD classification against controls. We conducted a univariate pathway anal. of untargeted and targeted metabolite profiles and find that vitamin E and urea cycle metabolism pathways are associated with PD, while the aspartate/asparagine and c21-steroid hormone biosynthesis pathways are associated with AD. We also found that the amount of metabolite missingness varied by phenotype, highlighting the importance of examining missing data in future metabolomic studies.

Metabolites published new progress about Alzheimer disease. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Name: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shen, Qing published the artcileVolatile compounds and antioxidant properties of pickled and dried mustard as influenced by different cooking methods, Synthetic Route of 21834-92-4, the main research area is pickled dried mustard volatile compound antioxidant steaming boiling microwaving.

Pickled and dried mustard (PDM; Brassica juncea, Coss), a traditional fermented vegetable product, is very popular in China because of its typical aromatic flavor and great antioxidant activity. PDM is usually consumed after being cooked by various cooking methods. Here, we determined and compared the effects of four different common cooking methods (steaming, high-pressure steaming, boiling, and microwaving) with different cooking time on the volatile compounds and antioxidant properties of PDM. The gas chromatog.-mass spectrometry results showed that steaming for 15 min and high-pressure steaming for 5 min significantly increased the concentration of volatile compounds of PDM while boiling and microwaving obviously decreased them. Moreover, high-pressure steaming best preserved the antioxidant activity, obtained from ABTS, DPPH, FRAP, and ORAC assays, as well as the total phenolic, flavonoid, and glucosinolate content of PDM. These findings provide insights into the beneficial effects of high-pressure steaming for 5 min in cooking PDM. Practical applications : Our findings showed that high-pressure steaming for short time (5 min) was the best way to cook PDM because it could not only significantly increase volatile compounds of PDM but also had the preservation effects of antioxidant activity of PDM. By contrast, boiling and microwaving dramatically decreased the volatile compounds and antioxidant properties of PDM mainly because of leaching action. These findings provide useful information for food producers and consumers to optimize the processing and cooking of PDM products with better flavor and health-related characteristics.

Journal of Food Processing and Preservation published new progress about Boiling (cooking). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Synthetic Route of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Huan published the artcileExperimental and Computational Studies of the Iron-Catalyzed Selective and Controllable Defluorosilylation of Unactivated Aliphatic gem-Difluoroalkenes, Quality Control of 1205-17-0, the main research area is fluoroalkene defluorosilylation iron catalysis silylalkene preparation stereoselective DFT; optimized mol structure fluoroalkene defluorosilylation iron catalyst silylalkene preparation; C−F bond cleavage; gem-disilylated alkenes; high selectivity; iron catalysis.

The 1st Fe-catalyzed defluorosilylation of unactivated gem-difluoroalkenes was developed, delivering gem-disilylated alkenes and (E)-silylated alkenes with excellent efficiency. This protocol features good functional group compatibility and excellent regio- and stereoselectivity, enabling the late-stage silylation of biol. relevant compounds, thus providing good opportunities for applications in medicinal chem. Preliminary mechanistic studies and DFT calculations reveal that a nucleophilic addition and elimination of the 2nd C-F bond might be involved in the disilylation catalytic system, demonstrating unusual reactivity characteristics of Fe catalysis.

Angewandte Chemie, International Edition published new progress about C-F bond cleavage. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Quality Control of 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Gracious, Shabalala Nhlanhla published the artcileFacile one-pot green synthesis of 2-amino-4H-benzo[g]chromenes in aqueous ethanol under ultrasound irradiation, Related Products of isoquinoline, the main research area is aminobenzochromene preparation green ammonium acetate catalyst ultrasound irradiation; hydroxynaphthalenedione aldehyde three component condensation.

An efficient green one-pot approach for the synthesis of eighteen novel dihydro-4H-benzo[g]chromene derivatives under ultrasound irradiation conditions. The three-component condensation reaction proceeded through Knoevenagel-Michael reaction of chosen active methylene compounds and 2-hydroxynaphthalene-1,4-dione with different substituted aldehydes in the presence of ammonium acetate in water and ethanol mixture at room temperature, which furnished high yields of products (91-98%) in a rapid reaction time of 5-15 min. This procedure offers 95% of the atom economy and 100% of carbon efficiency together with other eco-friendly benefits.

Synthetic Communications published new progress about Acoustic emission. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Subagyono, Rr dirgarini j. n. published the artcilePyrolysis of fast growing wood Macaranga gigantea: Product characterisation and kinetic study, SDS of cas: 86-51-1, the main research area is growing wood macaranga gigantea pyrolysis activation energy.

Fast-growing wood Macaranga gigantea has been pyrolyzed and its pyrolysis products have been characterized and their formation kinetics studied. Pyrolysis of M. gigantea wood was carried out by varying the temperature and time of pyrolysis to determine the effect of these two parameters on product yields and product characteristics. In general, an increase in pyrolysis temperature and time increased the yield of liquid and gas products, the concentration of cellulose, hemicellulose and lignin-derived compounds, but decreased the biochar yield. The organic phase liquid pyrolysis products mainly contained phenolic compounds and their derivatives, eugenols, furans, aldehydes and ketones. Fourier-transform IR spectroscopy and pyrolysis-gas chromatog.-mass spectrometry analyses of biochar showed that thermal decomposition of M. gigantea required temperatures higher than 300°C to optimize thermal decomposition and carbonization of lignin, cellulose and hemicellulose. The concentration of phenols and benzenediols in biochar decreased with an increase in pyrolysis temperature M. gigantea pyrolysis kinetics studies showed that wood pyrolysis occurred through four main stages with activation energy (Eα) values, based on calculations by the Friedman and Kissinger-Akahira-Sunose methods, of 28.1-99.0 kJ/mol and 35.6-104.9 kJ/mol, resp. The spectra produced by thermogravimetric analyzer coupled with a Fourier-transform IR spectroscopy showed that H2O and CO2 were produced during pyrolysis and the volatile compounds produced were predominantly phenolic compounds, in accord with characterization results of the liquid products by gas chromatog.-mass spectrometry and NMR spectroscopy.

Fuel published new progress about Activation energy. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, SDS of cas: 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Sun, Wei published the artcileChemodivergent transformations of amides using gem-diborylalkanes as pro-nucleophiles, Application of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is amide diborylalkane chemoselective addition elimination reaction.

A chemodivergent transformation of primary, secondary and tertiary amides by using 1,1-diborylalkanes as pro-nucleophiles was disclosed. In general, selective B-O elimination occurred for primary, secondary amides and tertiary lactams to generated enamine intermediate, while tertiary amides undergo B-N elimination to generated enolate intermediate. Various in-situ electrophilic trapping of those intermediates allowed the chemoselective synthesis of α-functionalized ketones, β-aminoketones, enamides, β-ketoamides, γ-aminoketones and cyclic amines from primary, secondary, tertiary amides and lactams. The key for these transformations was the enolization effect after the addition of α-boryl carbanion to amides.

Nature Communications published new progress about Addition reaction. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Application of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Schwarz, J. Luca published the artcile1,2-Amino Alcohols via Cr/Photoredox Dual-Catalyzed Addition of α-Amino Carbanion Equivalents to Carbonyls, SDS of cas: 1205-17-0, the main research area is amino alc preparation; aminomethylsilane carbonyl compound photoredox addition chromium catalyst photocatalyst.

Herein, we report the synthesis of protected 1,2-amino alcs. starting from carbonyl compounds and α-silyl amines. The reaction is enabled by a Cr/photoredox dual catalytic system that allows the in situ generation of α-amino carbanion equivalent which act as nucleophiles. The unique nature of this reaction was demonstrated through the aminoalkylation of ketones and an acyl silane, classes of electrophiles that were previously unreactive toward addition of alkyl-Cr reagents. Overall, this reaction broadens the scope of Cr-mediated carbonyl alkylations and discloses an underexplored retrosynthetic strategy for the synthesis of 1,2-amino alcs.

Journal of the American Chemical Society published new progress about Addition reaction. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, SDS of cas: 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Mingjun published the artcileMarine Natural Product for Pesticide Candidate: Pulmonarin Alkaloids as Novel Antiviral and Anti-Phytopathogenic-Fungus Agents, HPLC of Formula: 104-01-8, the main research area is antiviral biofungicide pulmonarin analog preparation antiviral phytopathogenic fungus; antiviral activity; fungicidal activity; marine natural product; mode of action; pulmonarins A and B; structure optimization.

Plant diseases are seriously endangering agricultural production The emergence of drug resistance has brought great challenges to the prevention and control of plant diseases. There is an urgent need for the emergence of new drug candidates. In this work, we achieved the efficient synthesis of pulmonarins A and B in 64% and 59% overall yield, resp. Pulmonarins A and B were found to have good antiviral activities against tobacco mosaic virus (TMV) for the first time. A series of pulmonarin derivatives were designed, synthesized, and evaluated for their antiviral and fungicidal activities systematically. Most compounds displayed higher anti-TMV activities than com. ribavirin. Compounds Pulmonarin B, -Benzyl-2-((3,5-dibromo-4-methoxybenzoyl)oxy)-N,N-dimethylethan-1-aminium Bromide (I), and 2-((4-(Allyloxy)-3,5-dibromobenzoyl)oxy)-N,N,N-trimethylethan-1-aminium Iodide with better inactivation effects than ningnanmycin emerged as new antiviral candidates. We selected I for further antiviral mechanism research, which revealed that it could inhibit virus assembly by interacting with TMV coat protein (CP). The mol. docking results further confirmed that these compounds could interact with CP through hydrogen bonding. These compounds also displayed broad spectrum fungicidal activities. Especially compound 2-(2-(3,5-Dibromo-4-methoxyphenyl)acetoxy)-N,N,N-trimethylethan-1-aminium Iodide with prominent antifungal activity emerged as a new fungicidal candidate for further research. The current work provides a reference for understanding the application of pulmonarin alkaloids in plant protection.

Journal of Agricultural and Food Chemistry published new progress about Alternaria solani. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, HPLC of Formula: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Jie published the artcileSynthesis and biological evaluation of 3-arylcoumarins as potential anti-Alzheimer’s disease agents, Safety of 4-Methoxyphenylacetic acid, the main research area is synthesis arylcoumarin Alzheimer disease agent; 3-Arylcoumarin; Alzheimer’s disease; antioxidant activity; cholinesterase inhibitors; monoamine oxidase inhibitors.

Alzheimer’s disease, a neurodegenerative illness, has the extremely complex pathogenesis. Accumulating evidence indicates there is a close relationship between several enzymes and Alzheimer’s disease. Various substituted 3-arylcoumarin derivatives were synthesized, and their in vitro activity, including cholinesterase inhibitory activity, monoamine oxidase inhibitory activity, and antioxidant activity were investigated. Most of the compounds exhibited high activity; therefore 3-arylcoumarin compounds have the potential as drug candidates for the treatment of Alzheimer’s disease.

Journal of Enzyme Inhibition and Medicinal Chemistry published new progress about Alzheimer disease. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Safety of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem