Category: esters-buliding-blocks

Dede, Fabiana; Piccolo, Oreste; Vigo, Daniele published the artcile< Dimethyl Fumarate: Heterogeneous Catalysis for the Development of an Innovative Flow Synthesis>, Synthetic Route of 112-63-0, the main research area is dimethyl fumarate catalysis development innovative synthesis.

The present work describes the development of an improved synthesis of the active pharmaceutical ingredient (API) di-Me fumarate. The use of continuous flow technol. and the newly developed methylation conditions solve some of the issues of previous com. production strategies, e.g., reaching complete conversion and avoiding the formation of toxic impurities. The optimization was carried out using the design of experiment approach and afforded a very efficient, sustainable process, suitable for the industrial application.

Organic Process Research & Development published new progress about Experimental design. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Aziz, Marian N.; Patel, Arzoo; Iskander, Amany; Chini, Avisankar; Gout, Delphine; Mandal, Subhrangsu S.; Lovely, Carl J. published the artcile< One-Pot Synthesis of Novel 2-Imino-5-Arylidene-Thiazolidine Analogs and Evaluation of Their Anti-Proliferative Activity against MCF7 Breast Cancer Cell Line>, Related Products of 19241-24-8, the main research area is iminoarylidine thiazolidine analog human breast cancer cell antiproliferative activity; X-ray; cytotoxicity; hydrothiolation; propargyl amine; surface-mediated cyclization.

An efficient surface-mediated synthetic method to facilitate access to a novel class of thiazolidines is described. The rationale behind the design of the targeted thiazolidines was to prepare stable thiazolidine analogs and evaluate their anti-proliferative activity against a breast cancer cell line (MCF7). Most of the synthesized analogs exhibited increased potency ranging from 2-15-fold higher compared to the standard reference, cisplatin. The most active thiazolidines contain a halogenated or electron withdrawing group attached to the N-Ph ring of exocyclic 2-imino group. However, combination of the two substituents did not enhance the activity. The anti-proliferative activity was measured in terms of IC50 values using an MTT assay.

Molecules published new progress about Antiproliferative agents. 19241-24-8 belongs to class esters-buliding-blocks, and the molecular formula is C11H13NS, Related Products of 19241-24-8.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rabjohn, Norman published the artcile< Chlorination of isophthaloyl and terephthaloyl chloride>, COA of Formula: C19H34O2, the main research area is .

m-C6H4(COCl)2 (144 g.) and 5 g. Fe, treated at 95-100° with Cl until there is no further increase in weight, give 137 g. 5-Cl derivative (I), b4 126-8°; 16 g. I and 100 cc. 10% NaOH, warmed 5 hrs. on a steam bath, give 11 g. 5,1,3-ClC6H3(CO2H)2. I (5 g.) and 50 cc. MeOH, heated 0.5 hr. on the steam bath, give 5,1,3-ClC6H3(CO2Me)2, m. 80-1°. I (10 g.) and 100 cc. NH4OH give 8 g. 5-chloroisophthalamide, m. 254-5°. p-C5H4(COCl)2 (215 g.) and 5 g. Fe at 175°, treated with Cl until there is no further increase in weight, give 223 g. 2,3,5,6-tetrachloroterephthaloyl chloride (II), m. 144-5°; 10 g. II and 300 cc. MeOH, refluxed 10 hrs., give 9.3 g. di-Me 2,3,5,6-tetrachloroterephthalate, m. 154-5°; the free acid m. about 330° (decomposition); the amide m. above 400°.

Journal of the American Chemical Society published new progress about Chlorination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Kaizheng; Wang, Feipeng; Lou, Ziyi; Han, Qiuhuang; Zhao, Qi; Hu, Kelin; Huang, Zhengyong; Li, Jian published the artcile< Relationship between the electrical characteristics of molecules and fast streamers in ester insulation oil>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is triglyceride octane streamer ester insulation oil; electron affinity; ester insulation oil; ionization potential; lighting impulse breakdown; streamer.

The effects of C=C, ester and β-H groups on the ionization potential (IP) and electron affinity (EA) of mols. in natural ester insulation oil were investigated by d. functional theory (DFT). The major contribution to the HOMO (HOMO) comes from the carbon atoms adjacent to C=C. Thus, the IPs of triglycerides decrease as the number of C=C double bonds increases. The C=C in alkanes may also lower the IP. However, the β-H in triglycerides has little effect on the IP, and C=C and β-H have only a small effect on the EAs of the triglycerides because of the major contributions of atoms near the ester group in triglycerides to the LUMO (LUMO). This study calculated the IPs of 53 kinds of mols. in FR3, which are significantly lower compared with those of mols. in mineral oil (MO) and trimethylolpropane triester without C=C. However, the lightning impulse breakdown voltage (LI Vb) of trimethylolpropane triester is still significantly lower than that of MO at the large gap. Therefore, the transition from slow to fast streamers under low lighting impulse voltage is determined by the ester group rather than by C=C and β-H. The ester group may attract more electrons, impacting itself more compared to alkane in MO and facilitating the transition from slow to fast streamers.

International Journal of Molecular Sciences published new progress about Electric insulators. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bonneville-Levard, Alice; Frappaz, Didier; Tredan, Olivier; Lavergne, Emilie; Corset, Veronique; Agrapart, Vincent; Chabaud, Sylvie; Pissaloux, Daniel; Wang, Qing; Attignon, Valery; Cartalat, Stephanie; Ducray, Francois; Thomas-Maisonneuve, Laure; Honnorat, Jerome; Meyronet, David; Taillandier, Luc; Blonski, Marie; Viari, Alain; Baudet, Christian; Sohier, Emilie; Lantuejoul, Sylvie; Paindavoine, Sandrine; Treilleux, Isabelle; Rodriguez, Christine; Perol, David; Blay, Jean-Yves published the artcile< Molecular profile to guide personalized medicine in adult patients with primary brain tumors: results from the ProfiLER trial>, Reference of 112-63-0, the main research area is brain tumor mol profile personalized medicine; Decision-making; Molecular profiling; Precision medicine; Primary brain tumor; Targeted therapy.

Abstract: Immunohistochem. and recent mol. technologies progressively guided access to personalized anti-tumoral therapies. We explored the feasibility, efficacy, and the impact of mol. profiling in patients with advanced brain tumors. This multicentric prospective trial ProfiLER enrolled patients with primary brain tumors, who have been pre-treated with at least one line of anti-cancer treatment, and for whom mol. profiles had been achieved using next-generation sequencing and/or comparative genomic hybridization on fresh or archived samples from tumor, relapse, or biopsies. A mol. tumor board weekly analyzed results and proposed mol.-based recommended therapy (MBRT). From Feb. 2013 to Dec. 2015, we enrolled 141 patients with primary brain tumor and analyzed 105 patients for whom tumor genomic profiles had been achieved. Histol. mainly identified glioblastoma (N = 46, 44%), low-grade glioma (N = 26, 25%), high-grade glioma (N = 12, 11%), and atypical and anaplastic meningioma (N = 8, 8%). Forty-three (41%) patients presented at least one actionable mol. alteration. Out of 61 alterations identified, the most frequent alterations occurred in CDKN2A (N = 18), EGFR (N = 12), PDGFRa (N = 8), PTEN (N = 8), CDK4 (N = 7), KIT (N = 6), PIK3CA (N = 5), and MDM2 (N = 3). Sixteen (15%) patients could not be proposed for a MBRT due to early death (N = 5), lack of available clin. trials (N = 9), or inappropriate results (N = 2). Only six (6%) of the 27 (26%) patients for whom a MBRT had been proposed finally initiated MBRT (everolimus (N = 3), erlotinib (N = 1), ruxolitinib (N = 1), and sorafenib (N = 1)), but discontinued treatment for toxicity (N = 4) or clin. progression (N = 2). High-throughput sequencing in patients with brain tumors may be routinely performed, especially when macroscopic surgery samples are available; nevertheless delays should be reduced. Criteria for clin. trial enrollment should be reconsidered in patients with brain tumors, and a panel of genes specifically dedicated to neurol. tumors should be developed to help decision-making in clin. practice.

Medical Oncology (New York, NY, United States) published new progress about Antitumor agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Chengwei; Prichard, Mark N.; Korba, Brent E.; Drach, John C.; Zemlicka, Jiri published the artcile< Fluorinated methylenecyclopropane analogues of nucleosides. Synthesis and antiviral activity of (Z)- and (E)-9-{[(2-fluoromethyl-2-hydroxymethyl)-cyclopropylidene]methyl}adenine and -guanine. [Erratum to document cited in CA148:552730]>, Related Products of 112-63-0, the main research area is erratum fluorinated methylenecyclopropane analog nucleoside preparation antiviral; fluoromethyl hydroxymethyl cyclopropylidene adenine guanine preparation antiviral structure erratum.

There are multiple typog. errors throughout the article; the correct to these are given.

Bioorganic & Medicinal Chemistry published new progress about Antiviral agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Eeza, Muhamed N. H.; Bashirova, Narmin; Zuberi, Zain; Matysik, Joerg; Berry, John P.; Alia, A. published the artcile< An integrated systems-level model of ochratoxin A toxicity in the zebrafish (Danio rerio) embryo based on NMR metabolic profiling>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Danio embryo ochratoxin A hepatotoxicity NMR metabolic profiling.

Ochratoxin A (OTA) is one of the most widespread mycotoxin contaminants of agricultural crops. Despite being associated with a range of adverse health effects, a comprehensive systems-level mechanistic understanding of the toxicity of OTA remains elusive. In the present study, metabolic profiling by high-resolution magic angle spinning (HRMAS) NMR, coupled to intact zebrafish embryos, was employed to identify metabolic pathways in relation to a systems-level model of OTA toxicity. Embryotoxicity was observed at sub-micromolar exposure concentrations of OTA. Localization of OTA, based on intrinsic fluorescence, as well as a co-localization of increased reactive oxygen species production, was observed in the liver kidney, brain and intestine of embryos. Moreover, HRMAS NMR showed significant alteration of metabolites related to targeting of the liver (i.e., hepatotoxicity), and pathways associated with detoxification and oxidative stress, and mitochondrial energy metabolism Based on metabolic profiles, and complementary assays, an integrated model of OTA toxicity is, thus, proposed. Our model suggests that OTA hepatotoxicity compromises detoxification and antioxidant pathways, leading to mitochondrial membrane dysfunction manifested by crosstalk between pathways of energy metabolism Interestingly, our data addnl. aligns with a possible role of mitochondrial fusion as a “”passive mechanism”” to rescue mitochondrial integrity during OTA toxicity.

Scientific Reports published new progress about Brain. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Aneja, Meenakshi; Kothari, Seema; Banerji, Kalyan K. published the artcile< Correlation analysis of reactivity in the oxidation of substituted benzaldehydes by pyridinium hydrobromide perbromide>, Electric Literature of 112-63-0, the main research area is correlation analysis reactivity oxidation benzaldehyde pyridinium hydrobromide perbromide; LFER reactivity oxidation benzaldehyde pyridinium hydrobromide perbromide.

The oxidation of benzaldehyde and 35 monosubstituted benzaldehydes by pyridinium hydrobromide perbromide (PHPB) in aqueous acetic acid gives the corresponding benzoic acids. The reaction is first order with respect to each of the benzaldehydes and PHPB. Addition of pyridinium bromide has no effect on the rate of oxidation The oxidation of [2H]benzaldehyde (PhCDO) indicated the presence of a substantial kinetic isotope effect. The effect of solvent composition indicated that the reaction rate increases with increase in the polarity of the solvent. The rates of oxidation of meta- and para-substituted benzaldehydes were correlated in terms of Charton’s triparametric LDR equation whereas those of ortho-substituted benzaldehydes were correlated with a tetraparametric LDRS equation. The oxidations of para- and ortho-substituted benzaldehydes are more susceptible to the delocalization effect while the oxidation of meta-substituted compounds displays a greater dependence on the field effect. The pos. value of η suggests an electron-deficient reaction center in the rate-determining step. The reaction is subjected to steric hindrance by the ortho substituents.

Journal of Physical Organic Chemistry published new progress about Abstraction reaction (rate determining hydride). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tsebriienko, Tamara; Popov, Anatoli I. published the artcile< Effect of Poly(Titanium Oxide) on the Viscoelastic and Thermophysical Properties of Interpenetrating Polymer Networks>, Quality Control of 112-63-0, the main research area is polytitanium oxide interpenetrating polymer network viscoelastic thermophys property.

The influence of poly(titanium oxide) obtained using the sol-gel method in 2-hydroxyethyl methacrylate medium on the viscoelastic and thermophys. properties of interpenetrating polymer networks (IPNs) based on crosslinked polyurethane (PU) and poly(hydroxyethyl methacrylate) (PHEMA) was studied. It was found that both the initial (IPNs) and organo-inorganic interpenetrating polymer networks (OI IPNs) have a two-phase structure by using methods of dynamic mech. anal. (DMA) and differential scanning calorimetry (DSC). The differential scanning calorimetry methods and SEM showed that the presence of poly(titanium oxide) increases the compatibility of the components of IPNs. It was found that an increase in poly(titanium oxide) content leads to a decrease in the intensity of the relaxation maximum for PHEMA phase and an increase in the effective crosslinking d. due to the partial grafting of the inorganic component to acrylate. It was shown that the topol. of poly(titanium oxide) structure has a significant effect on the relaxation behavior of OI IPNs samples. According to SEM, a uniform distribution of the inorganic component in the polymer matrix is observed without significant aggregation.

Crystals published new progress about Complex modulus, tan δ. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gao, Zhen xing; Cui, Ze long; Zhou, Min ran; Fu, Yue; Liu, Fen; Zhang, Lu; Ma, Sai; Chen, Chun yan published the artcile< The new mitochondrial uncoupler BAM15 induces ROS production for treatment of acute myeloid leukemia>, Related Products of 347174-05-4, the main research area is BAM15 anticancer agent reactive oxygen species acute myeloid leukemia; Apoptosis; BAM15; Leukemia; Primary cells; Proliferation; ROS.

Acute myeloid leukemia (AML) is a malignant proliferative disease of myeloid hematopoietic origin and cannot be treated appropriately at present. This is due to the fact that leukemia cells are not sensitive to some of the traditional chemotherapy drugs. Or some chemotherapeutic drugs are too toxic to normal cells, affecting their wide clin. application. In this study, we identified BAM15 as a novel mitochondrial uncoupling agent by screening a library of small mol. compounds that inhibit AML cell activity. BAM15 significantly inhibited proliferation and promoted apoptosis in AML cells while at the same time being less cytotoxic to normal cells. The mechanism may be related to the disturbance of the ROS production balance. In vivo investigations revealed that BAM15 effectively suppressed AML progression and prolonged the survival time of mice. In addition, we found that BAM15 can be used in combination with cytarabine to enhance its anti-cancer activity and inhibit the activity of primary cells in AML. Therefore, we identified BAM15 as a potential drug candidate for the treatment of AML.

Biochemical Pharmacology (Amsterdam, Netherlands) published new progress about Acute myeloid leukemia. 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Related Products of 347174-05-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics