Category: isoquinoline

Mak, Jeffrey Y. W. published the artcileHDAC7 Inhibition by Phenacetyl and Phenylbenzoyl Hydroxamates, Application of 4-Methoxyphenylacetic acid, the main research area is HDAC7 inhibitors catalytic site phenylbenzoyl hydroxamates phthalimide stability solubility.

The zinc-containing histone deacetylase enzyme HDAC7 is emerging as an important regulator of immunometabolism and cancer. Here, we exploit a cavity in HDAC7, filled by Tyr303 in HDAC1, to derive new inhibitors. Phenacetyl hydroxamates and 2-phenylbenzoyl hydroxamates bind to Zn2+ and are 50-2700-fold more selective inhibitors of HDAC7 than HDAC1. Phenylbenzoyl hydroxamates are 30-70-fold more potent HDAC7 inhibitors than phenacetyl hydroxamates, which is attributed to the benzoyl aromatic group interacting with Phe679 and Phe738. Phthalimide capping groups, including a saccharin analog, decrease rotational freedom and provide hydrogen bond acceptor carbonyl/sulfonamide oxygens that increase inhibitor potency, liver microsome stability, solubility, and cell activity. Despite being the most potent HDAC7 inhibitors to date, they are not selective among class IIa enzymes. These strategies may help to produce tools for interrogating HDAC7 biol. related to its catalytic site.

Journal of Medicinal Chemistry published new progress about Drug metabolism (metabolic stability). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Application of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lee, Jisook published the artcileNovel Human Aminopeptidase N Inhibitors: Discovery and Optimization of Subsite Binding Interactions, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is microsomal aminopeptidase N hydroxamic acid.

Aminopeptidase N (APN/CD13) is a zinc-dependent M1 aminopeptidase that contributes to cancer progression by promoting angiogenesis, metastasis, and tumor invasion. We have previously identified hydroxamic acid-containing analogs that are potent inhibitors of the APN homolog from the malarial parasite Plasmodium falciparum M1 aminopeptidase (PfA-M1). Herein, we describe the rationale that underpins the repurposing of PfA-M1 inhibitors as novel APN inhibitors. A series of novel hydroxamic acid analogs were developed using a structure-based design approach and evaluated their inhibition activities against APN. N-(2-(Hydroxyamino)-2-oxo-1-(3′,4′,5′-trifluoro-[1,1′-biphenyl]-4-yl)ethyl)-4-(methylsulfonamido)benzamide (6ad) proved to be an extremely potent inhibitor of APN activity in vitro, selective against other zinc-dependent enzymes such as matrix metalloproteases, and possessed limited cytotoxicity against Ad293 cells and favorable physicochem. and metabolic stability properties. The combined results indicate that compound 6ad may be a useful lead for the development of anticancer agents.

Journal of Medicinal Chemistry published new progress about Drug metabolism (metabolic stability). 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

Meng, Guangrong published the artcileGraphene oxide catalyzed ketone α-alkylation with alkenes: enhancement of graphene oxide activity by hydrogen bonding, SDS of cas: 151-10-0, the main research area is ketone alkene alc alkylation graphene oxide catalyst.

Herein, the first graphene oxide catalyzed ketone-alkylation using olefins and alcs. as simple alkylating agents is reported. Extensive studies of the graphene surface suggest a pathway involving dual activation of both coupling partners. The polar functional groups have a stabilizing effect on the GO surface, which results in a net enhancement of the catalytic activity. The method represents the first alkylation of carbonyl compounds using graphenes, which opens the door for the development of an array of protocols for ketone functionalization employing common carbonyl building blocks and readily available graphenes.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alkylation catalysts, regioselective. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, SDS of cas: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chen, Si-Qi published the artcileAldehyde as a Traceless Directing Group for Regioselective C-H Alkylation Catalyzed by Rhodium(III) in Air, Product Details of C9H10O3, the main research area is aromatic aldehyde acrylate regioselective decarbonylative alkylation rhodium catalyst air.

The aromatic aldehyde as a traceless directing group for the regioselective C-H alkylation catalyzed by rhodium(III) under aerobic atm. conditions has been developed. The process involves an aldehyde assisted direct addition of C-H bond to unsaturated electrophiles of acrylates or acrylic acids, and the subsequent decarbonylation. A trace amount of water is found to favor the reaction.

Organic Letters published new progress about Alkylation catalysts, regioselective. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhao, Yunbo published the artcileB(C6F5)3-Catalyzed site-selective N1-alkylation of benzotriazoles with diazoalkanes, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is diazoacetate benzotriazole pentafluorophenyl borane catalyst regioselective alkylation; alkyl benzotriazole preparation.

Alkylation of benzotriazoles is synthetically challenging, often leading to mixtures of N1 and N2 alkylation. Herein, metal-free catalytic site-selective N1-alkylation of benzotriazoles with diazoalkanes was described in the presence of 10 mol% of B(C6F5)3. These reactions provide N1-alkylated benzotriazoles in good to excellent yields and this protocol was successfully adapted to gram-scale syntheses as well as a derivative with antimicrobial activity.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alkylation catalysts, regioselective. 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

Henry, Martyn C. published the artcileOne-pot ortho-amination of aryl C-H bonds using consecutive iron and copper catalysis, Formula: C9H10O3, the main research area is arene nucleophile regioselective amination bond activation iron copper catalyst.

A one-pot approach for ortho-coupling of arenes with non-activated N-nucleophiles has been developed using sequential iron and copper catalysis. Regioselective ortho-activation of anisoles such as p-phenylanisole, 4-methoxyanisole, 3,4-dimethylanisole, etc. anilines such as 4-aminobenzonitrile, 4-nitroaniline, 4-methylaniline, etc. and p-cresol was achieved through iron(III) triflimide catalyzed iodination, followed by a copper(I)-catalyzed, ligand-assisted coupling reaction with N-heterocycle such as pyrazole, imidazole, pyrrole, 2-pyrrolidinone, amides such as benzamide, p-toluamide and sulfonamide-based nucleophiles such as benzenesulfonamide, p-toluenesulfonamide, p-chlorobenzenesulfonamide, methanesulfonamide. The synthetic utility of this one-pot, two-step method for the direct amination of ortho-aryl C-H bonds was demonstrated with the late-stage functionalization of 7-methoxy-1-methyl-3,4-dihydro-1H-quinolin-2-one. This allowed the preparation of a TRIM24 bromodomain inhibitor I [R = C6H5S(O)2NH] and a series of novel analogs I [R = C6H5C(O)NH, 2-oxopyrrolidin-1-yl, 1H-pyrazol-1-yl, etc.].

Organic & Biomolecular Chemistry published new progress about Amination catalysts (regioselective). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Kovalenko, Oksana P. published the artcileDual-target inhibitors of mycobacterial aminoacyl-tRNA synthetases among N-benzylidene-N′-thiazol-2-yl-hydrazines, Category: isoquinoline, the main research area is benzylidenyl thiazolyl hydrazine preparation; aminoacyltRNA synthetase inhibition tuberculostatics mol docking SAR.

Effective treatment of tuberculosis is challenged by the rapid development of Mycobacterium tuberculosis (Mtb) multidrug resistance that presumably could be overcome with novel multi-target drugs. Aminoacyl-tRNA synthetases (AARSs) are an essential part of protein biosynthesis machinery and attractive targets for drug discovery. Here, we exptl. verify a hypothesis of simultaneous targeting of structurally related AARSs by a single inhibitor. We previously identified a new class of mycobacterial leucyl-tRNA synthetase inhibitors, N-benzylidene-N′-thiazol-2-yl-hydrazines. Mol. docking of a library of novel N-benzylidene-N′-thiazol-2-yl-hydrazine derivatives into active sites of M. tuberculosis LeuRS (MtbLeuRS) and MetRS (MtbMetRS) resulted in a panel of the best ranking compounds, which were then evaluated for enzymic potency. Screening data revealed 11 compounds active against MtbLeuRS and 28 compounds active against MtbMetRS. The hit compounds display dual inhibitory potency as demonstrated by IC50 values for both enzymes. Compound I is active against Mtb H37Rv cells in in vitro bioassays.

MedChemComm published new progress about Aminoacyl-tRNA synthetase inhibitors. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nguyen, Ngoc-Lan Thi published the artcileChloroaluminate Ionic Liquid Immobilized on Magnetic Nanoparticles as a Heterogeneous Lewis Acidic Catalyst for the Friedel-Crafts Sulfonylation of Aromatic Compounds, COA of Formula: C8H10O2, the main research area is chloroaluminate ionic liquid immobilization magnetic nanoparticle; heterogeneous Lewis acidic catalyst Friedel Crafts sulfonylation aromatic compound; ionic liquids; magnetic nanoparticles; sulfones; sulfonic anhydride; sulfonylation.

Chloroaluminate ionic liquid bound on magnetic nanoparticles (Fe3O4@O2Si[PrMIM]Cl·AlCl3) was prepared and used as a heterogenous Lewis acidic catalyst for the Friedel-Crafts sulfonylation of aromatic compounds with sulfonyl chlorides or p-toluenesulfonic anhydride. The catalyst′s stability, efficiency, easy recovery, and high recyclability without considerable loss of catalytic capability after four recycles were evidence of its advantages. Furthermore, the stoichiometry, wide substrate scope, short reaction time, high yield of sulfones, and solvent-free reaction condition also made this procedure practical, ecofriendly, and economical.

Molecules published new progress about Aromatic compounds Role: PRP (Properties). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, COA of Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Kanghui published the artcileIdentification of Components in Citri Sarcodactylis Fructus from Different Origins via UPLC-Q-Exactive Orbitrap/MS, SDS of cas: 86-51-1, the main research area is citri sarcodactylis fructus foshou.

To systematically analyze the chem. constituents of Citri Sarcodactylis Fructus (CSF) from different origins, an efficient approach based on ultraperformance liquid chromatog. plus Q-Exactive Orbitrap tandem mass spectrometry (UPLC-Q-Exactive Orbitrap/MS) detection for the discrimination of chem. components from of 15 batches of CSF from four main origins was used in this research. Through parent peaks, fragment peaks, fragmentation characteristics, and comparative anal. with the literature and reference standards, a total of 77 components from the methanol extracts including 18 coumarins, 24 flavonoids, seven organic acids, three limonoids, and 25 other compounds were detected and identified. Among them, 15 components have not been reported previously in the CSF. Notably, the stachydrine peak initially showed a higher content in the total ion current chromatogram. Overall, CSF produced in the Zhejiang province contained a richer variety of chem. compositions These observations provided a theor. basis for the further quality assessment and application of CSF.

ACS Omega published new progress about Citrus medica sarcodactylis (dried fruit). 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

Shields, Samuel W. J. published the artcileiTrEnDi: In Situ Trimethylation Enhancement Using Diazomethane: Improved and Expanded Glycerophospholipid and Sphingolipid Analyses via a Microscale Autonomous Derivatization Platform, Related Products of isoquinoline, the main research area is trimethylation situ lipidomics automation derivatization diazomethane.

Trimethylation enhancement using diazomethane (TrEnDi) is a derivatization technique that significantly enhances the signal intensity of glycerophospholipid species in mass spectrometry (MS) and tandem mass spectrometry (MS/MS) analyses. Here, we describe a novel apparatus that is able to conduct in situ TrEnDi (iTrEnDi) by generating and immediately reacting small amounts of gaseous diazoalkane with analyte mols. iTrEnDi allows complete and rapid methylation of phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidic acid (PA), and sphingomyelin (SM) in a safe manner by removing any need for direct handling of dangerous diazoalkane solutions iTrEnDi-modified PC ([PCTr]+) and PE ([PETr]+) showed similar sensitivity enhancements and fragmentation patterns compared to our previously reported methodol. iTrEnDi yielded dimethylated PA ([PATr]), which exhibited dramatically improved chromatog. behavior and a 14-fold increase in liquid chromatog. MS (LCMS) sensitivity compared to unmodified PA. In comparison to in-solution-based TrEnDi, iTrEnDi demonstrated a modest decrease in sensitivity, likely due to analyte losses during handling. However, the enhanced safety benefits of iTrEnDi coupled with its ease of use and capacity for automation, as well as its accommodation of more-reactive diazoalkane species, vastly improve the accessibility and utility of this derivatization technique. Finally, as a proof of concept, iTrEnDi was used to produce diazoethane (DZE), a more-reactive diazoalkane than diazomethane. Reaction between DZE and PC yielded ethylated [PCTr]+, which fragmented via MS/MS to produce a high-intensity characteristic fragment ion, enabling a novel and highly sensitive precursor ion scan.

Analytical Chemistry (Washington, DC, United States) published new progress about Electrospray ionization mass spectrometry. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem