Category: isoquinoline

Merzlikine, Alexei published the artcileDevelopment of machine learning models of β-cyclodextrin and sulfobutylether-β-cyclodextrin complexation free energies, Formula: C11H9I3N2O4, the main research area is machine learning modeling beta cyclodextrin sulfobutylether complexation energy.

A new set of 142 exptl. determined complexation constants between sulfobutylether-β-cyclodextrin and diverse organic guest mols., and 78 observations reported in literature, were used for the development of the QSPR models by the two machine learning regression methods – Cubist and Random Forest. Similar models were built for β-cyclodextrin using the 233-compound dataset available in the literature. These results demonstrate that the machine learning regression methods can successfully describe the complex formation between organic mols. and β-cyclodextrin or sulfobutylether-β-cyclodextrin. In particular, the root mean square errors for the test sets predictions by the best models are low, 1.9 and 2.7 kJ/mol, resp. The developed QSPR models can be used to predict the solubilizing effect of cyclodextrins and to help prioritizing exptl. work in drug discovery.

International Journal of Pharmaceutics published new progress about Complexation. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Fucke, Katharina published the artcileOvercoming the solvation shell during the crystallisation of diatrizoic acid from dimethyl sulfoxide, Formula: C11H9I3N2O4, the main research area is diatrizoic acid crystallization dimethyl sulfoxide desolvation.

We present three crystal structures of diatrizoic acid (DTA) DMSO solvates illustrating progressive desolvation of the DTA mol. and concomitant increasing degree of DTA self-association Using these structures, plausible pathways for overcoming the solvation shell of DTA during its crystallization from solution are discussed.

Chemical Communications (Cambridge, United Kingdom) published new progress about Conformation. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Spitta, Luis F. published the artcileAn in-vitro approach for water quality determination: activation of NF-κB as marker for cancer-related stress responses induced by anthropogenic pollutants of drinking water, Recommanded Product: Diatrizoic Acid, the main research area is NF kappaB cancer stress response anthropogenic pollutant drinking water; Cytotoxicity; Environmental toxicology; Fluorescence based reporter assay; Genotoxicity; NF-kappaB; TOX-Box.

Epidemiol. studies show that there is a link between urban water pollution and increase in human morbidity and mortality. With the increase in number of new substances arising from the chem., pharmaceutical, and agricultural industries, there is an urgent need to develop biol. test systems for fast evaluation of potential risks to humans and the environmental ecosystems. Here, a combined cellular reporter assay based on the cellular survival and the stress-induced activation of the survival-promoting factor nuclear factor κB (NF-κB) and its use for the detection of cytotoxicity and cancer-related stress responses is presented. A total of 14 chems. that may be found in trace-amounts in ground water levels are applied and tested with the presented assay. The project is embedded within the joint research project TOX-BOX which aims to develop a harmonized testing strategy for risk management of anthropogenic trace substances in potable water. The assay identified carbendazim as a NF-κB-activating agent in mammalian cells.

Environmental Science and Pollution Research published new progress about Cytotoxicity. 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

Eva-Maria, Prantl published the artcileComparison of in vitro test systems using bacterial and mammalian cells for genotoxicity assessment within the “”health-related indication value (HRIV) concept, Synthetic Route of 117-96-4, the main research area is bacterial mammalian cell genotoxicity health related indication value concept; Drinking water; Genotoxicity; Germany; HRIV concept; Risk assessment; Test battery; Tox-Box.

In numerous cases, the German health-related indication value (HRIV) concept has proved its practicability for the assessment of drinking water relevant trace substances (Umweltbundesamt 2003). The HRIV is based on the toxicol. profile of a substance. An open point of the HRIV concept has been the assignment of standardized test procedures to be used for the assessment. The level of the HRIV is at its lowest as soon as the genotoxicity of the substance is detected. As a single test on its own, it is not sufficient enough to assess the human toxicol. relevance of a genotoxic effect or exclude it in the case of a neg. result; a reasonable test battery was required, tech. oriented towards the already harmonized international, hierarchical evaluation for toxicol. assessment of chems. Therefore, an important aim of this project was to define a strategy for the genotoxicol. assessment of anthropogenic trace substances. The basic test battery for genotoxicity of micropollutants in drinking water needs to fulfill several requirements. Although quick test results are needed for the determination of HRIV, a high degree of transferability to human genotoxicity should be ensured. Therefore, an in vitro genotoxicity test battery consisting of the Ames fluctuation test with two tester strains (ISO 11350), the umu test and the micronucleus test, or from the Ames test with five tester strains (OECD 471) and the micronucleus test is proposed. On the basis of selected test substances, it could be shown that the test battery leads to pos., indifferent, and neg. results. Given indifferent results, the health authority and the water supplier must assume that it is a genotoxic substance. Genetically modified tester strains are being sensitive to different chem. classes by expression of selected mammalian key enzymes for example nitroreductase, acetyltransferase, and glutathione-S-transferase. These strains may provide valuable addnl. information and may give a first indication of the mechanism of action. To check this hypothesis, various addnl. strains expressing specific human-relevant enzymes were investigated. It could be shown that the addnl. use of genetically modified tester strains can enhance the detectable substance spectrum with the bacterial genotoxicol. standard procedures or increase the sensitivity. The addnl. use provides orienting information at this level as a lot of data can be obtained quite quickly and with little effort. These indications of the mechanism of action should be however verified with a test system that uses mammalian cells, better human cells, to check their actual relevance. The selection of appropriate addnl. tester strains has to be defined from case to case depending on the mol. structure and also still requires some major expertise.

Environmental Science and Pollution Research published new progress about Cytotoxicity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ray, Parijat published the artcileDevelopment of bio-acrylic polymers from Cyrene: transforming a green solvent to a green polymer, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is cyrene bioacrylic polymer polymerization.

In this work, Cyrene, a bio-based green solvent, has been transformed into its methacrylic derivative (m-Cyrene) for the first time. Polymerization of the newly-synthesized monomer was studied using different polymerization techniques such as bulk, solution and emulsion polymerization Compared to solution polymerization, emulsion polymerization was found to produce higher yields and mol. weights Cyrene, along with other green solvents, was used as a polymerization solvent and was found to be the most effective (as a solvent) with the highest yield and mol. weight The new Cyrene monomer was found to undergo rapid polymerization compared to isobornyl methacrylate (IBMA), another bio-derived monomer with a close structural similarity, and the highest polymerization rate was obtained in Cyrene as the polymerization solvent media. A reactivity ratio calculation also showed m-Cyrene to be more reactive than IBMA. The homopolymer derived from emulsion polymerization showed high glass transition temperature (192°C) and thermal stability (up to ca. 266°C). Cytotoxicity testing confirmed the non-toxic nature of the bio-derived monomer, making it a green bio-derived methacrylic monomer for synthesizing polymers, where high thermal stability and mech. properties are required.

Polymer Chemistry published new progress about Cytotoxicity. 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

Andreucci, Michele published the artcileReversal of radiocontrast medium toxicity in human renal proximal tubular cells by white grape juice extract, Formula: C11H9I3N2O4, the main research area is radiocontrast medium nephrotoxicity radiotoxicity Vitis juice extract radioprotectant; Cell injury; Kinase; Renal cell; Signaling; Vitis spp..

Radiocontrast media (RCM)-induced nephrotoxicity (CIN) is a major clin. problem accounting for 12% of all hospital-acquired cases of acute kidney injury. The pathophysiol. of CIN is not well understood, but direct toxic effects on renal cells have been postulated as contributing to CIN. We have investigated the effect of a white grape (Vitis vinifera) juice extract (WGJe) on human renal proximal tubular (HK-2) cells treated with the radiocontrast medium (RCM) sodium diatrizoate. WGJe caused an increase in phosphorylation of the prosurvival kinases Akt and ERK1/2 in HK-2 cells. Treatment of HK-2 cells with 75 mg I/mL sodium diatrizoate for 2.5 h and then further incubation (for 27.5 h) after removal of the RCM caused a drastic decrease in cell viability. However, pre-treatment with WGJe, prior to incubation with diatrizoate, dramatically improved cell viability. Anal. of key signaling mols. by Western blotting showed that diatrizoate caused a drastic decrease in phosphorylation of Akt (Ser473), FOXO1 (Thr24) and FOXO3a (Thr32) during the initial 2.5 h incubation period, and WGJe pre-treatment caused a reversal of these effects. Further anal. by Western blotting of samples from HK-2 cells cultured for longer periods of time (for up to 27.5 h after an initial 2.5 h exposure to diatrizoate with or without WGJe pre-treatment) showed that WGJe pre-treatment caused a neg. effect on phosphorylation of p38, NF-κB (Ser276) and pERK1/2 while having a pos. effect on the phosphorylation of Akt, FOXO1/FOXO3a and maintained levels of Pim-1 kinase. WGJe may alleviate RCM toxicity through modulation of signaling mols. that are known to be involved in cell death and cell survival and its possible beneficial effects should be further investigated.

Chemico-Biological Interactions published new progress about Cytotoxicity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Walpen, Nicolas published the artcileApplication of UV absorbance and electron-donating capacity as surrogates for micropollutant abatement during full-scale ozonation of secondary-treated wastewater, Synthetic Route of 117-96-4, the main research area is micropollutant ozonation wastewater treatment UV absorbance electron donating capacity; Electron-donating capacity; Micropollutant abatement; On-line monitoring; Ozonation; UV absorbance.

Ozonation of secondary-treated wastewater for the abatement of micropollutants requires a reliable control of ozone doses. Changes in the UV absorbance of dissolved organic matter (DOM) during ozonation allow to estimate micropollutant abatement online and were therefore identified as feed-back control parameter. In this study, the suitability of the electron-donating capacity (EDC) as an addnl. surrogate parameter which is independent of optical DOM properties was evaluated during full-scale ozonation. For this purpose, a recently developed EDC analyzer was enhanced to enable continuous online EDC and UV absorbance measurements. During a multi-week monitoring campaign at the wastewater treatment plant of Zurich, Switzerland, specific ozone doses were varied from 0.13 to 0.91 mgO3·mgDOC-1 and selected micropollutants with different ozone reactivities were analyzed by LC-MS in conjunction with bromate anal. by IC-MS. In agreement with previous laboratory studies, the relative residual UV absorbance and EDC both decreased exponentially as a function of the specific ozone dose and, in comparison to the residual UV absorbance, residual EDC values showed a more pronounced decrease at low specific ozone doses â‰?.34 mgO3·mgDOC-1. Logistic regression models allowed to estimate relative residual micropollutant concentrations in the ozonation effluent using either the residual UV absorbance or EDC as explanatory variable. Averaging those models along the explanatory variables allowed to estimate target values in relative residual UV absorbances and EDC for specific micropollutant abatement targets. In addition, both parameters allowed to identify conditions with elevated conversions of bromide to bromate. Taken together, these findings show that the integration of relative residual EDC values as a second control parameter can improve existing absorbance-based ozonation control systems to meet micropollutant abatement targets, particularly for treatment systems where low ozone doses are applied.

Water Research published new progress about Absorptivity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jia, Xiaofan published the artcileSynthesis of Stilbenes by Rhodium-Catalyzed Aerobic Alkenylation of Arenes via C-H Activation, COA of Formula: C8H10O2, the main research area is stilbene preparation rhodium catalyzed alkenylation vinyl arene.

Arene alkenylation is commonly achieved by late transition metal-mediated C(sp2)-C(sp2) cross-coupling, but this strategy typically requires prefunctionalized substrates (e.g., with halides or pseudohalides) and/or the presence of a directing group on the arene. Transition metal-mediated arene C-H activation and alkenylation offers an alternative method to functionalize arene substrates. Herein, we report a rhodium-catalyzed oxidative arene alkenylation from arenes and styrenes to prepare stilbene and stilbene derivatives The reaction is successful with several functional groups on both the arene and the olefin including fluoride, chloride, trifluoromethyl, ester, nitro, acetate, cyanide, and ether groups. Reactions of monosubstituted arenes are selective for alkenylation at the meta and para positions, generally with approx. 2:1 selectivity, resp. Resveratrol and (E)-1,2,3-trimethoxy-5-(4-methoxystyryl)benzene (DMU-212) are synthesized by this single-step approach in high yield. Comparison with palladium catalysis showed that rhodium catalysis is more selective for meta-functionalization for monosubstituted arenes and that the Rh catalysis has better tolerance of halogen groups.

Journal of the American Chemical Society published new progress about Alkenylation. 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

Yang, Jinfei published the artcileMn(II)-Catalysed ortho-alkenylation of aromatic amines and its application in reproductive diseases, Recommanded Product: 4-Methoxy-N-methylaniline, the main research area is manganese catalyst aromatic amine alkenylation reproductive disease.

A Mn(II)-catalyzed ortho-alkenylation of aromatic amines and its application in reproductive diseases were developed. The use of MnCl2 was critical for the ortho-alkenylation of aromatic amines. The general applicability of this procedure was highlighted by the synthesis of 27 vinylanilines, with good regioselectivities. The value of our approach in practical applications was investigated by studying the effects of one of the compounds 3m on 8 wk-old adult male rats with azoospermia as a mammalian model. The results show that a small amount of sperm will gradually be produced in the epididymis and testes by treatment of 8 wk-old adult male rats with azoospermia with 1 mg kg-13m after two weeks, while treatment with 10 mg kg-13m led to obvious sperm production Notably, if we increase the dose to 100 mg kg-1, there will be a lot of sperm production in the epididymis and testes after two weeks of treatment. The results of this study will be of great significance in research on drugs for treating azoospermia and oligospermia diseases.

RSC Advances published new progress about Alkenylation. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Recommanded Product: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Vidic, Jasmina Minic published the artcileQuantitative assessment of olfactory receptors activity in immobilized nanosomes: a novel concept for bioelectronic nose, Synthetic Route of 1205-17-0, the main research area is olfactory receptor immobilization nanosome bioelectronic nose.

The authors describe how mammalian olfactory receptors (ORs) could be used as sensing elements of highly specific and sensitive bioelectronic noses. An OR and an appropriate Gα protein were co-expressed in Saccharomyces cerevisiae cells from which membrane nanosomes were prepared, and immobilized on a sensor chip. By Surface Plasmon Resonance, the authors were able to quant. evaluate OR stimulation by an odorant, and G protein activation. The authors demonstrate that ORs in nanosomes discriminate between odorant ligands and unrelated odorants, as in whole cells. This assay also provides the possibility for quant. assessment of the coupling efficiency of the OR with different Gα subunits, without the interference of the cellular transduction pathway. The authors’ findings will be useful to develop a new generation of electronic noses for detection and discrimination of volatile compounds, particularly amenable to micro- and nano-sensor formats.

Lab on a Chip published new progress about Alkyl groups. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Synthetic Route of 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem