Category: isoquinoline

Wang, Lei published the artcileNovel HIV-1 capsid-targeting small molecules of the PF74 binding site, Related Products of isoquinoline, the main research area is HIV1 capsid targeting antiviral PF74 binding site; Capsid-targeting antivirals; HIV-1; Metabolic stability; PF74.

The PF74 (I) binding site in HIV-1 capsid protein (CA) is a compelling antiviral drug target. Although PF74 confers mechanistically distinct antiviral phenotypes by competing against host factors for CA binding, it suffers from prohibitively low metabolic stability. Therefore, there has been increasing interest in designing novel sub-chemotypes of PF74 with similar binding mode and improved metabolic stability. We report herein our efforts to explore the inter-domain interacting indole moiety for designing novel CA-targeting small mols. Our design includes simple substitution on the indole ring, and more importantly, novel sub-chemotypes with the indole moiety replaced with a few less electron-rich rings. All 56 novel analogs were synthesized and evaluated for antiviral activity, cytotoxicity, and impact on CA hexamer stability. Selected analogs were tested for metabolic stability in liver microsomes. Mol. modeling was performed to verify compound binding to the PF74 site. In the end, 5-hydroxyindole analogs (8,9 and 12, II – IV, resp.) showed improved potency (up to 20-fold) over PF74. Of the novel sub-chemotypes, α- and β-naphthyl analogs (27 and 33, V and VI, resp.) exhibited sub micromolar antiviral potencies comparable to that of PF74. Interestingly, although only moderately inhibiting HIV-1 (single-digit micromolar EC50s), analogs of the 2-indolone sub-chemotype consistently lowered the m.p. (Tm) of CA hexamers, some with improved metabolic stability over PF74.

European Journal of Medicinal Chemistry published new progress about AIDS (disease). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yuan, Rui published the artcileSynthesis of 1,7-bis (N-substituted-aminomethyl)-2,8-dihydroxy-Troger’s bases and their application in Aldol-Ullmann reaction, Quality Control of 86-51-1, the main research area is aminomethyl dihydroxy Troger base preparation anti tumor human; hydroxylcoumarin electrophile Aldol Ullmann.

1,7-Bis (N-substituted-aminomethyl)-2,8-dihydroxy-Troger’s bases I (R = CH3, n-C4H9, C6H11, etc.) were synthesized and used as efficient organocatalyst for the Aldol reaction of 4-hydroxylcoumarin and 2-benzylidenemalononitrile (or Me (ethyl)-2-cyano-3-phenylacrylate) to afford 2-amino-4-aryl-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carbonitriles II (R1 = H, p-F, p-OCH3, etc.; R2 = CN, COOMe, COOEt). Subsequently, they were used as the efficient ligand to promote the Pd-catalyzed Aldol-Ullmann reaction to give III (R = 4-OH, 2-OCH3, 4-F, etc.) and IV (R = 5-CH3, 5-OCH3, 5-Cl, etc.), resp. The anti-cancer activity on human three pos. breast cancer cells (MCF-7), human three neg. breast cancer cells (MDA-MB-231), human hepatoma cells (HepG2), human hepatoma cells (MHCC-97H) and cytotoxicity on human hepatocyte cells (LO2) of catalyst I and all products in vitro were evaluated. I (R = CH3) had selective inhibition (inhibition rate>30%) on MCF-7 cells while I (R = 1-phenylmethyl) and I (R = pyridin-2-methyl) had selective inhibition on MDA-MB-231 cells. II (R1 = 3,4,5-(OCH3)3; R2 = CN) had strong inhibitory effects on three kinds of cancer cells except MDA-MB-231 while II (R1 = p-Br; R2 = CN), II (R1 = 2,4-Cl2; R2 = CN), II (R1 = o-F; R2 = CN) and II (R1 = o-Br; R2 = CN) had strong inhibitory effects on four kinds of cancer cells. However, all the compounds showed cytotoxicity to normal LO2 cells which prompts the necessary of structure modification to reduce the toxicity.

Youji Huaxue published new progress about Aldol addition. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Quality Control of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Heng published the artcileDBU-Promoted Intramolecular Crossed Aldol Reaction: A Facile Access to Indane-Fused Pyrrolidine, Application In Synthesis of 86-51-1, the main research area is DBU catalyst intramol cross aldol addition; indane fused pyrrolidine preparation.

A new strategy for the facile synthesis of indane-fused pyrrolidines through DBU-promoted intramol. crossed aldol reaction has been developed. The efficiency, compatibility and practicality of this method were demonstrated by a broad substrate scope, mild reaction conditions and gram-scale synthesis. The further derivatizations of the synthesized diastereoisomers I and II were performed for arylation, alkenylation, amination and etherification, showing high diastereoselectivities. Deuterium labeling experiment suggests a possible carbocation process which leads to the high diastereoselectivity during the transformations of I and II. Based on this strategy, the 5-HT2C agonist III and the antihypertensive agent IV were successfully synthesized through a three-step synthetic pathway. This new strategy potentially enables a wide exploration of these indane-fused derivatives applied for pharmaceuticals and related fields.

European Journal of Organic Chemistry published new progress about Aldol addition. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Application In Synthesis of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Quelal-Vasconez, Maribel Alexandra published the artcileAutomatic and non-targeted analysis of the volatile profile of natural and alkalized cocoa powders using SBSE-GC-MS and chemometrics, Computed Properties of 21834-92-4, the main research area is alkalized cocoa powder volatile profile SBSE GC MS chemometrics; Alkalized cocoa powder; Chemometrics; PARAFAC2; PLS-DA; SBSE-GC–MS; Volatile compounds.

A total of 56 key volatile compounds present in natural and alkalized cocoa powders have been rapidly evaluated using a non-target approach using stir bar sorptive extraction gas chromatog. mass spectrometry (SBSE-GC-MS) coupled to Parallel Factor Anal. 2 (PARAFAC2) automated in PARADISe. Principal component anal. (PCA) explained 80% of the variability of the concentration, in four PCs, which revealed specific groups of volatile characteristics. Partial least squares discriminant anal. (PLS-DA) helped to identify volatile compounds that were correlated to the different degrees of alkalization. Dynamics between compounds such as the acetophenone increasing and toluene and furfural decreasing in medium and strongly alkalized cocoas allowed its differentiation from natural cocoa samples. Thus, the proposed comprehensive anal. is a useful tool for understanding volatiles, e.g., for the quality control of cocoa powders with significant time and costs savings.

Food Chemistry published new progress about Alkalinization. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Computed Properties of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Shuqi published the artcileCharacterization of the key aroma-active compounds in Yongchuan douchi (fermented soybean) by application of the sensomics approach, Synthetic Route of 21834-92-4, the main research area is aroma active compound Yongchuan douche fermented soybean sensomics; AEDA; GC–MS; GC–O; OAV; aroma-active compounds; douchi.

Yongchuan douchi is a traditional fermented soya bean product which is popular in Chinese dishes due to its unique flavor. In this study, the key aroma-active compounds of Yongchuan douchi were characterized by the combined gas chromatog.-olfactometry (GC-O) and gas chromatog.-mass spectrometry (GC-MS) with sensory evaluation. In total, 49 aroma compounds were sniffed and identified, and 20 of them with high flavor dilution factors (FD) and odor activity values (OAVs) greater than one were screened by applied aroma extract dilution anal. (AEDA) and quantitated anal. Finally, aroma recombination and omission experiments were performed and 10 aroma-active compounds were thought to have contributed significantly including 2,3-butanedione (butter, cheese), di-Me trisulfide (garlic-like), acetic acid (pungent sour), acetylpyrazine (popcorn-like), 3-methylvaleric acid (sweaty), 4-methylvaleric acid (sweaty), 2-mehoxyphenol (smoky), maltol (caramel), γ-nonanolactone (coconut-like), eugenol (woody) and phenylacetic acid (flora). In addition, sensory evaluation showed that the flavor profile of Yongchuan douchi mainly consisted of sauce-like, sour, nutty, smoky, caramel and fruity notes.

Molecules published new progress about Allium sativum. 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

Li, Gen published the artcileP(III)/P(V)-Catalyzed Methylamination of Arylboronic Acids and Esters: Reductive C-N Coupling with Nitromethane as a Methylamine Surrogate, Related Products of isoquinoline, the main research area is arylation nitromethane arylboronic acid organophosphorus catalyzed reductive coupling.

The direct reductive N-arylation of nitromethane by organophosphorus-catalyzed reductive C-N coupling with arylboronic acid derivatives is reported. This method operates by the action of a small ring organophosphorus-based catalyst (1,2,2,3,4,4-hexamethylphosphetane P-oxide) together with a mild terminal reductant hydrosilane to drive the selective installation of the methylamino group to (hetero)aromatic boronic acids and esters. This method also provides for a unified synthetic approach to isotopically labeled N-methylanilines from various stable isotopologues of nitromethane (i.e., CD3NO2, CH315NO2, and 13CH3NO2), revealing this easy-to-handle compound as a versatile precursor for the direct installation of the methylamino group.

Journal of the American Chemical Society published new progress about Amination (Me). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ceballos, Liena published the artcileOptimization of a HS-SPME/GC-MS method for determination of volatile compounds in some Cuban unifloral honeys, Name: 5-Methyl-2-phenylhex-2-enal, the main research area is honey volatile compound HS SPME GC MS Cuba.

A headspace (HS)/solid phase microextraction (SPME)/gas chromatog.-mass spectrometry (GC-MS) method was developed to determine the profiles of volatile compounds from three Cuban unifloral honeys: Turbina corymbosa (L.) Raf., Ipomoea triloba L. and Gouania polygama (Jacq.) Urb. The optimization of the extraction conditions was carried out by response surface methodol. The anal. conditions of the optimized HS-SPME method were: 65 μm PDMS/DVB fiber, 6 g honey, 3 mL water and 20% weight/weight sodium chloride, 20 min for pre-extraction, 30 min for extraction at 60C and 4 min for GC desorption. The GC-MS anal. allowed the identification of 181 volatile compounds in these honeys. Possible markers for the floral classification of honeys were for the T. corymbosa type: 4-Me methoxysalicylate, trans-pinocarveol, chavicol, Me anisate, trans-α-bergamotene and α-bisabolol. In I. triloba honey, 2,5,5-trimethyl-3-tetrahydrofuranone and 1,2-diphenylethanol were found, while 4-methyl-1-pentanol and isopentyl acetate were only present in G. polygama honey. With the use of the HS-SPME method in combination with multivariate anal. techniques such as Principal Component Anal. and K-nearest neighbor, it was possible to discriminate the different honeys according to their floral origin.

Journal of Food Quality published new progress about Apis mellifera. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Name: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Boulard, Lise published the artcileUtilization of large volume zwitterionic hydrophilic interaction liquid chromatography for the analysis of polar pharmaceuticals in aqueous environmental samples: Benefits and limitations, Recommanded Product: Diatrizoic Acid, the main research area is zwitterionic hydrophilic liquid chromatog polar pharmaceutical water analysis; Environmental sample; Freeze-drying; HILIC; HILIC robustness; Matrix effect; Pharmaceutical.

Benefits and limitations of HILIC were studied for the anal. of extreme polar organic contaminants in aqueous environmental matrixes. A sensitive anal. method was developed and validated for the detection of 11 pharmaceuticals, 15 pharmaceutical metabolites and transformation products and the artificial sweetener acesulfame in aqueous environmental samples. The anal. method consisted of a simple and non-specific sample preparation based on freeze-drying followed by detection with large injection volume (70 μL) zwitterionic HILIC-ESI-MS/MS. Robustness studies showed a high sensitivity of the retention times and peak shapes to variations of the acetonitrile/water ratio of both the eluent and the diluent. Thus, a thorough sample and eluent preparation is required to obtain reproducible results. Extreme matrix effects of >200% were observed for emtricitabine and acyclovir, which could be traced to the co-elution of nitrate and chloride, resp. These matrix effects and those of other analytes could be efficiently compensated by using deuterated, 13C and 15N-labeled internal standards The developed method was able to detect the selected 27 analytes in treated wastewater, surface water and groundwater down to limit of quantification (LOQ) in the lower ng/L range. Appreciable concentrations were detected, ranging up to 110 μg/L (guanyl urea) in treated wastewater, up to 5.1 μg/L (oxipurinol) in surface water and up to 6.1 μg/L (acesulfame) in groundwater. In a German drinking water, only the X-ray contrast medium diatrizoate and the artificial sweetener acesulfame were quantified above LOQ with 0.19 μg/L and 0.35 μg/L, resp.

Journal of Chromatography A published new progress about Drinking waters. 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

Funke, Jan published the artcileOxypurinol – A novel marker for wastewater contamination of the aquatic environment, Safety of Diatrizoic Acid, the main research area is oxypurinol wastewater ground drinking water pollution; Allopurinol; Biological transformation; Drinking water; Groundwater; Rivers.

The anti-gout agent allopurinol is one of the most prescribed pharmaceuticals in Germany and is widely metabolized into oxypurinol (80%) as well as the corresponding riboside conjugates (10%) within the human body. To investigate the occurrence of allopurinol and oxypurinol in the urban water cycle an anal. method was developed based on solid phase extraction (SPE) and subsequent liquid chromatog. electrospray-ionization tandem mass spectrometry (LC-MS/MS).In raw wastewater concentration levels of oxypurinol ranged up to 26.6 μg L-1, whereas allopurinol was not detected at all. In wastewater treatment plant (WWTP) effluents, concentrations of allopurinol were Safety of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Kiefer, Karin published the artcileChlorothalonil transformation products in drinking water resources: Widespread and challenging to abate, COA of Formula: C11H9I3N2O4, the main research area is chlorothalonil transformation product drinking water treatment potential toxicity; Activated carbon; Groundwater; Metabolite; Ozonation; Pesticide; Water treatment.

Chlorothalonil, a fungicide applied for decades worldwide, has recently been banned in the European Union (EU) and Switzerland due to its carcinogenicity and the presence of potentially toxic transformation products (TPs) in groundwater. The chlorothalonil sulfonic acid TPs (R471811, R419492, R417888) occurred more frequently and at higher concentrations (detected in 65-100% of the samples, ≤2200 ngL-1) than the phenolic TPs (SYN507900, SYN548580, R611968; detected in 10-30% of the samples, ≤130 ngL-1). The abatement of chlorothalonil TPs was investigated in laboratory and pilot-scale experiments and along the treatment train of various water works, comprising aquifer recharge, UV disinfection, ozonation, advanced oxidation processes (AOPs), activated carbon treatment, and reverse osmosis. In contrast, the sulfonic acid TPs, which occurred in higher concentrations in drinking water resources, react only very slowly with ozone (kO3 <0.04 M-1s-1) and ·OH (kOH <5.0 x 107 M-1s-1) and therefore persist in ozonation and ·OH-based AOPs. Activated carbon retained the very polar TP R471811 only up to a specific throughput of 25 m3kg-1 (20% breakthrough), similarly to the X-ray contrast agent diatrizoic acid. Water Research published new progress about Drinking waters. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem