Month: October 2021

In 2021.0 RUSS J ELECTROCHEM+ published article about MILD-STEEL; CARBON-STEEL; ACID-MEDIA; ABSOLUTE ELECTRONEGATIVITY; FUNCTIONALIZED CHITOSAN; DERIVATIVES; ADSORPTION; HARDNESS; DRUG; BIOMACROMOLECULE in [Salman, Mohammad; Srivastava, Vandana; Haque, Jiyaul] Banaras Hindu Univ, Indian Inst Technol, Dept Chem, Varanasi 221005, Uttar Pradesh, India; [Quraishi, M. A.; Chauhan, Dheeraj Singh; Ansari, K. R.] King Fahd Univ Petr & Minerals, Ctr Res Excellence Corros, Res Inst, Dhahran 31261, Saudi Arabia in 2021.0, Cited 58.0. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5. Safety of 4-Methoxybenzaldehyde

Three quinoline derivatives as corrosion inhibitors for N80 steel 15% HCl solutions. Influence of the -H, -OCH3 groups and the introduction of pi bonding are reported in the present report. Experimental studies were performed using gravimetric tests, electroanalytical methods, and surface analysis. The cinnamaldehyde derivative displayed the maximum inhibition efficiency of 95% at 300 mg L-1, followed by the -OCH3 and the -H derivatives. The inhibitor adsorption on the metal surface obeyed the Langmuir isotherm with a mixed mode of physical and chemical adsorption. Impedance measurements revealed an increase in the charge transfer resistance with the addition of increasing inhibitor dosage, which supported the inhibitor adsorption. Frequency modulations displayed a lowering in the corrosion current density upon the addition of the corrosion inhibitors. Polarization studies revealed that all the three inhibitors showed a mixed-type inhibition behavior with cathodic prevalence. SEM and FTIR of the inhibitor-adsorbed steel surface affirmed the adsorption of inhibitor and improvement in the surface smoothness of the N80 steel. The pKa analysis revealed that all the three inhibitors undergo protonation at the pyridine Nitrogen at the experimental pH. The DFT studies showed that the protonated form of the inhibitors is more active compared to the neutral form.

Safety of 4-Methoxybenzaldehyde. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Salman, M; Srivastava, V; Quraishi, MA; Chauhan, DS; Ansari, KR; Haque, J or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recently I am researching about ALZHEIMERS-DISEASE; A-BETA; CHEMICAL-SYNTHESIS; DESIGN; ABAD/17-BETA-HSD10; IDENTIFICATION; OPTIMIZATION; DERIVATIVES; CHEMISTRY; PEPTIDE, Saw an article supported by the Merck Sharpe & Dome e Faculte de medecine (Universite Laval); Mitacs Inc (Montreal, QC, Canada); foundation of CHU de Quebec (Endocrinology and Nephrology Unit); Faculty of Medicine of Universite Laval. Category: indole-building-block. Published in ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER in ISSY-LES-MOULINEAUX ,Authors: Boutin, S; Maltais, R; Roy, J; Poirier, D. The CAS is 120-14-9. Through research, I have a further understanding and discovery of 3,4-Dimethoxybenzaldehyde

17beta-Hydroxysteroid dehydrogenase type 10 (17 beta-HSD10) is the only mitochondrial member of 17 beta-HSD family. This enzyme can oxidize estradiol (E2) into estrone (E1), thus reducing concentration of this neuroprotective steroid. Since 17 beta-HSD10 possesses properties that suggest a possible role in Alzheimer’s disease, its inhibition appears to be a therapeutic strategy. After we identified the androsterone (ADT) derivative 1 as a first steroidal inhibitor of 17 beta-HSD10, new analogs were synthesized to increase the metabolic stability, to improve the selectivity of inhibition over 17 beta-HSD3 and to optimize the inhibitory potency. From six D-ring derivatives of 1 (17-C = O), two compounds (17 beta-H/17 alpha-OH and 17 beta-OH/17aC CH) were more metabolically stable and did not inhibit the 17 beta-HSD3. Moreover, solid phase synthesis was used to extend the molecular diversity on the 3b-piperazinylmethyl group of the steroid base core. Eight over 120 new derivatives were more potent inhibitors than 1 for the transformation of E2 to E1, with the 4-(4-trifluoromethyl-3-methoxybenzyl)piperazin-1-ylmethyl-ADT (D-3,7) being 16 times more potent (IC50 = 0.14 mM). Finally, D-ring modification of D-3,7 provided 17 beta-OH/17 alpha-C CH derivative 25 and 17 beta-H/17 alpha-OH derivative 26, which were more potent inhibitor than 1 (1.8 and 2.4 times, respectively). (C) 2020 Elsevier Masson SAS. All rights reserved.

About 3,4-Dimethoxybenzaldehyde, If you have any questions, you can contact Boutin, S; Maltais, R; Roy, J; Poirier, D or concate me.. Category: indole-building-block

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Chemistry very interesting. Saw the article Iron-catalyzed chemoselective hydride transfer reactions published in 2021. COA of Formula: C7H8O, Reprint Addresses Renaud, JL (corresponding author), Normandie Univ, CNRS, UNICAEN, LCMT,ENSICAEN, 6 Blvd Marechal Juin, F-14050 Caen, France.. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol

A Diaminocyclopentadienone iron tricarbonyl complex has been applied in chemoselective hydrogen transfer reductions. This bifunctional iron complex demonstrated a broad applicability in mild conditions in various reactions, such as reduction of aldehydes over ketones, reductive alkylation of various functionalized amines with functionalized aldehydes and reduction of alpha,beta-unsaturated ketones into the corresponding saturated ketones. A broad range of functionalized substrates has been isolated in excellent yields with this practical procedure. (C) 2021 Elsevier Ltd. All rights reserved.

About Benzyl Alcohol, If you have any questions, you can contact Coufourier, S; Ndiaye, D; Gaillard, QG; Bettoni, L; Joly, N; Mbaye, MD; Poater, A; Gaillard, S; Renaud, JL or concate me.. COA of Formula: C7H8O

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recently I am researching about KETONES; TRIFLUOROMETHYL; PERFLUOROALKYLATION; GENERATION; CHEMISTRY; ALDEHYDES; DERIVATIVES; CATALYSTS; REAGENTS, Saw an article supported by the Asahi Glass Foundation; JSPS KAKENHIMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI) [JP18H02553, JP18H04401]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Fujihira, Y; Hirano, K; Ono, M; Mimura, H; Kagawa, T; Sedgwick, DM; Fustero, S; Shibata, N. The CAS is 123-11-5. Through research, I have a further understanding and discovery of 4-Methoxybenzaldehyde. COA of Formula: C8H8O2

A simple protocol to overcome the explosive pentafluoroethylation of carbonyl compounds by HFC-125 is described. The use of potassium (K) bases with triglyme or tetraglyme as a solvent safely yields the pentafluoroethylation products in good to high yields. The experimental results suggest that an encapsulation of the K cation by glymes as K(glyme)(2) inhibits the contact between the K cation and the reactive anionic pentafluoroethyl counterion, preventing their transformation into KF and explosive tetrafluoroethylene (TFE). The generation of sterically demanding [K(G3)(2)](+) and [K(G4)(2)](+) is an effective way as an unstable pentafluoroethyl anion reservoir.

About 4-Methoxybenzaldehyde, If you have any questions, you can contact Fujihira, Y; Hirano, K; Ono, M; Mimura, H; Kagawa, T; Sedgwick, DM; Fustero, S; Shibata, N or concate me.. COA of Formula: C8H8O2

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Gold(I)-Catalyzed Intramolecular Hydroarylation of Phenol-Derived Propiolates and Certain Related Ethers as a Route to Selectively Functionalized Coumarins and 2H-Chromenes WOS:000606840200014 published article about SOLID-PHASE SYNTHESIS; CATALYZED HYDROARYLATION; CONVENIENT SYNTHESIS; RING-CLOSURE; EFFICIENT; ACID; CYCLIZATION; ANALOGS; MILD; ALKENYLATION in [Cervi, Aymeric; Vo, Yen; Banwell, Martin G.; Willis, Anthony C.] Australian Natl Univ, Res Sch Chem, Inst Adv Studies, Canberra, ACT 2601, Australia; [Cervi, Aymeric; Chai, Christina L. L.] Inst Chem & Engn Sci, Singapore 138665, Singapore; [Chai, Christina L. L.] Natl Univ Singapore, Dept Pharm, Singapore 117543, Singapore; [Banwell, Martin G.; Lan, Ping] Jinan Univ, Inst Adv & Appl Chem Synth, Guangzhou 510632, Guangdong, Peoples R China in 2021, Cited 99. Category: indole-building-block. The Name is Mequinol. Through research, I have a further understanding and discovery of 150-76-5

Methods are reported for the efficient assembly of a series of phenol-derived propiolates, including the parent system 56, and their Au(I)-catalyzed cyclization (intramolecular hydroarylation) to give the corresponding coumarins (e.g., 1). Simple syntheses of natural products such as ayapin (144) and scoparone (145) have been realized by such means, and the first of these subject to single-crystal X-ray analysis. A related process is described for the conversion of propargyl ethers such as 156 into the isomeric 2H-chromene precocene I (159), a naturally occurring inhibitor of juvenile hormone biosynthesis.

Category: indole-building-block. About Mequinol, If you have any questions, you can contact Cervi, A; Vo, Y; Chai, CLL; Banwell, MG; Lan, P; Willis, AC or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Agriculture; Chemistry; Food Science & Technology very interesting. Saw the article Synthesis of Three Bioactive Aromatic Compounds by Introducing Polyketide Synthase Genes into Engineered Escherichia coli published in 2019. Application In Synthesis of 4-Hydroxyquinolin-2(1H)-one, Reprint Addresses Ahn, JH (corresponding author), Konkuk Univ, Bio Mol Informat Ctr, Dept Biosci & Biotechnol, Seoul 05029, South Korea.. The CAS is 86-95-3. Through research, I have a further understanding and discovery of 4-Hydroxyquinolin-2(1H)-one

Intermediates in aromatic amino acid biosynthesis can serve as substrates for the synthesis of bioactive compounds. In this study we used two intermediates in the shikimate pathway of Escherichia coli, chorismate and anthranilate, to synthesize three bioactive compounds: 4-hydroxycoumarin (4-HC), 2,4-dihydroxyquinoline (DHQ), and 4-hydroxy-1-methyl-2(1H)-quinolone (NMQ). We introduced genes for the synthesis of salicylic acid from chorismate to supply the substrate for 4-HC and the gene encoding N-methyltransferase for the synthesis of N-methylanthranilate from anthranilate. Polyketide synthases and coenzyme (Co)A ligases were tested to determine the optimal combination of genes for the synthesis of each compound. We also tested several constructs and identified the best one for increasing levels of endogenous substrates for chorismate, anthranilate, and malonyl-CoA. With the use of these strategies, 255.4 mg/L 4-HC, 753.7 mg/L DHQ, and 17.5 mg/L NMQwere synthesized. This work provides a basis for the synthesis of diverse coumarin and quinoline derivatives with potential medical applications.

About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Choo, HJ; Ahn, JH or concate me.. Application In Synthesis of 4-Hydroxyquinolin-2(1H)-one

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article A practical method for preparation of phenols from arylboronic acids catalyzed by iodopovidone in aqueous medium WOS:000491304300003 published article about AEROBIC OXIDATIVE HYDROXYLATION; ARYL/HETEROARYL BORONIC ACIDS; HIGHLY EFFICIENT CONVERSION; METAL-FREE SYNTHESIS; IPSO-HYDROXYLATION; VISIBLE-LIGHT; PHOTOREDOX CATALYSIS; PHENYLBORONIC ACID; HYDROGEN-PEROXIDE; MILD CONDITIONS in [Lu, Guangying; Ren, Yaoyao; Dong, Bin; Zhou, Bin; Ren, Jiangmeng; Zeng, Bu-Bing] East China Univ Sci & Technol, Sch Pharm, 130 Meilong Rd, Shanghai 200237, Peoples R China; [Ke, Yanxiong] East China Univ Sci & Technol, Sch Pharm, Engn Res Ctr Pharmaceut Proc Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China in 2019.0, Cited 46.0. SDS of cas: 99-93-4. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4

A novel and efficient strategy for the ipso-hydroxylation of arylboronic acids to phenols has been developed using inexpensive, readily available, air-stable water-soluble povidone iodine as catalyst and aqueous hydrogen peroxide as oxidizing agent. The reactions were performed at room temperature under metal-, ligand- and base-free condition in a short reaction time. The corresponding substituted phenols were obtained in moderate to good yields by oxidative hydroxylation of arylboronic acids in aqueous medium. (C) 2019 Elsevier Ltd. All rights reserved.

About 4′-Hydroxyacetophenone, If you have any questions, you can contact Lu, GY; Ren, YY; Dong, B; Zhou, B; Ren, JM; Ke, YX; Zeng, BB or concate me.. SDS of cas: 99-93-4

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

SDS of cas: 86-95-3. Authors Chheda, PR; Kummer, DA; Nishimura, RT; McClure, KJ; Venkatesan, H in AMER CHEMICAL SOC published article about in [Kummer, David A.] Lundbeck La Jolla Res Ctr Inc, San Diego, CA 92121 USA; [Chheda, Pratik R.; Nishimura, Rachel T.; McClure, Kelly J.; Venkatesan, Hariharan] Janssen Res & Dev, Discovery Chem, San Diego, CA 92121 USA in 2021, Cited 63. The Name is 4-Hydroxyquinolin-2(1H)-one. Through research, I have a further understanding and discovery of 86-95-3

A one-pot, Hantzsch ester-mediated Knoevenagel condensation-reduction reaction has been developed for alkylation of a wide range of substituted 2,4-quinoline diols and 2,4-pyridine diols with aldehydes. The process is operationally simple to perform, scalable, and provides highly useful C-3 alkylated quinoline and pyridine diols in yields of 58-92%. The alkylation products can be converted to 2,4-dihaloquinoline and pyridine substrates for further functionalization.

About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Chheda, PR; Kummer, DA; Nishimura, RT; McClure, KJ; Venkatesan, H or concate me.. SDS of cas: 86-95-3

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Pharmacology & Pharmacy very interesting. Saw the article Synthesis of Coumarin Derivatives as Versatile Scaffolds for GSK-3 beta Enzyme Inhibition published in 2020.0. Safety of m-Methoxyphenol, Reprint Addresses Lacerda, V (corresponding author), Univ Fed Espirito Santo, Ctr Ciencias Exatas, Dept Quim, Av Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil.. The CAS is 150-19-6. Through research, I have a further understanding and discovery of m-Methoxyphenol

Background: Glycogen synthase kinase-3 (GSK-3) is involved in the phosphorylation and inactivation of glycogen synthase. GSK-3 inhibitors have been associated with a variety of diseases, including Alzheimer’s disease (AD), diabetes type II, neurologic disorders, and cancer. The inhibition of GSK-3 beta isoforms is likely to represent an effective strategy against AD. Objective: The present work aimed to design and synthesize coumarin derivatives to explore their potential as GSK-3 beta kinase inhibitors. Methods: The through different synthetic methods were used to prepare coumarin derivatives. The GSK-3 beta activity was measured through the ADP-Glo (TM) Kinase Assay, which quantifies the kinase-dependent enzymatic production of ADP from ATP, using a coupled-luminescence-based reaction. A docking study was performed by using the crystallographic structure of the staurosporine/GSK-3 beta complex [Protein Data Bank (PDB) code: 1Q3D]. Results: The eleven coumarin derivatives were obtained and evaluated as potential GSK-3 beta inhibitors. Additionally, in silico studies were performed. The results revealed that the compounds 5c, 5d, and 6b inhibited GSK-3 beta enzymatic activity by 38.97-49.62% at 1 mM. The other coumarin derivatives were tested at 1 mM, 1 mu M, and 1 nM concentrations and were shown to be inhibitor candidates, with significant IC50 (1.224-6.875 mu M) values, except for compound 7c (IC50 – 10.809 mu M). Docking simulations showed polar interactions between compound 5b and Lys(85) and Ser(203), clarifying the mechanism of the most potent activity. Conclusion: The coumarin derivatives 3a and 5b, developed in this study, showed remarkable activity as GSK-3 beta inhibitors.

About m-Methoxyphenol, If you have any questions, you can contact Francisco, CS; Javarini, CL; Barcelos, ID; Morais, PAB; de Paula, H; Borges, WD; Neto, AC; Lacerda, V or concate me.. Safety of m-Methoxyphenol

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Formula: C8H8O2. Authors Chen, EB; Song, HL; Zhao, SN; Liu, C; Tang, L; Zhang, Y in ELSEVIER published article about in [Chen, Erbao; Song, Huanlu; Liu, Chen; Tang, Long; Zhang, Yu] Beijing Technol & Business Univ BTBU, Coll Food & Hlth, Lab Mol Sensory Sci, Beijing 100048, Peoples R China; [Zhao, Shuna] COFCO Nutr & Hlth Res Inst Co Ltd, Beijing Engn Lab Geriatr Nutr & Foods, Beijing Key Lab Nutr & Hlth & Food Safety, Nutr & Hlth Branch,China Knowledge Ctr Engn Sci &, Beijing 102209, Peoples R China in 2021.0, Cited 65.0. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4

Brown sugar (BS), muscovado sugar (MS), and brown granulated sugar (BGS) are manufactured from sugarcane (Saccharum officinarum). The odors of these three kinds of sugar have been analyzed using liquid-liquid extraction combined with gas chromatography-olfactometry-mass spectrometry (GC-O-MS). A total of 92 odor compounds were detected in these three kinds of sugar products; among which, the acid compounds exhibited the highest content, followed by phenolic compounds, aldehydes, and ketones. Statistical analysis demonstrated significant differences in the odor compounds among different sugar products. Abundant Maillard reaction products (such as pyrazines and furanones) were detected in brown sugar as compared to the other two kinds of sugars. As muscovado sugar was prepared by boiling the mixture for a longer time, the Maillard reaction was more efficient, and the contents of small molecular organic acids (such as formic acid and acetic acid) in muscovado sugar were significantly higher than those in brown sugar. As the molasses was separated during the production of the brown granulated sugar, its odor compounds were lost, and the contents of odor compounds in brown granulated sugar were lower than those in brown sugar and muscovado sugar.

About 4′-Hydroxyacetophenone, If you have any questions, you can contact Chen, EB; Song, HL; Zhao, SN; Liu, C; Tang, L; Zhang, Y or concate me.. Formula: C8H8O2

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles