Category: esters-buliding-blocks

de la Osa, Clara; Perez-Lopez, Jesus; Feria, Ana-Belen; Baena, Guillermo; Marino, Daniel; Coleto, Inmaculada; Perez-Montano, Francisco; Gandullo, Jacinto; Echevarria, Cristina; Garcia-Maurino, Sofia; Monreal, Jose A. published the artcile< Knock-down of phosphoenolpyruvate carboxylase 3 negatively impacts growth, productivity, and responses to salt stress in sorghum (Sorghum bicolor L.)>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Sorghum root leaf growth nitrate reductase citrate synthase; Sorghum bicolor ; RNA interference; central metabolism; phosphoenolpyruvate carboxylase; productivity; salt stress; stomata.

Phosphoenolpyruvate carboxylase (PEPC) is a carboxylating enzyme with important roles in plant metabolism Most studies in C4 plants have focused on photosynthetic PEPC, but less is known about non-photosynthetic PEPC isoenzymes, especially with respect to their physiol. functions. In this work, we analyzed the precise roles of the sorghum (Sorghum bicolor) PPC3 isoenzyme by the use of knock-down lines with the SbPPC3 gene silenced (Ppc3 lines). Ppc3 plants showed reduced stomatal conductance and plant size, a delay in flowering time, and reduced seed production In addition, silenced plants accumulated stress indicators such as Asn, citrate, malate, and sucrose in roots and showed higher citrate synthase activity, even in control conditions. Salinity further affected stomatal conductance and yield and had a deeper impact on central metabolism in silenced plants compared to wild type, more notably in roots, with Ppc3 plants showing higher nitrate reductase and NADH-glutamate synthase activity in roots and the accumulation of mols. with a higher N/C ratio. Taken together, our results show that although SbPPC3 is predominantly a root protein, its absence causes deep changes in plant physiol. and metabolism in roots and leaves, neg. affecting maximal stomatal opening, growth, productivity, and stress responses in sorghum plants. The consequences of SbPPC3 silencing suggest that this protein, and maybe orthologs in other plants, could be an important target to improve plant growth, productivity, and resistance to salt stress and other stresses where non-photosynthetic PEPCs may be implicated.

Plant Journal published new progress about Biomass. 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

Liu, Yu; Xi, Hui; Fu, Yingjie; Li, Peng; Sun, Shihao; Zong, Yongli published the artcile< Effects of Organic Acids on the Release of Fruity Esters in Water: An Insight at the Molecular Level>, Computed Properties of 112-63-0, the main research area is ester organic acid mol interaction hydrogen bond; aroma release; density functional theory; esters; intermolecular interaction; odour detection threshold; organic acids.

It is well known that organic acids (OAs) could affect the flavor of fruit juices and beverages. However, the mol. mechanism of aroma release is still unclear. In this study, the effects of citric acid (CA), L-(-)-malic acid (MA) and L-lactic acid (LA) on the release of six selected esters and their sensory perception were investigated by means of HS-GC-MS analyses and odor detection threshold determination, resp. Meanwhile, the d. functional theory (DFT) calculation was employed to explore the interaction modes between esters and OAs. HS-GC-MS analyses showed that the concentration and the type of OAs regulated the release of esters. The results were basically consistent with the detection threshold change of those esters. The DFT calculation suggested that the main intermol. interaction was hydrogen bonds, and several esters could form a ternary ring structure with OAs through hydrogen bonds. The interactions can induce the different release behaviors of esters in OAs water solution The number of carboxyl functional groups in OAs and the spatial conformation of esters appeared to influence the magnitude of the interaction. The above results demonstrated the mechanism of OAs affecting the release of esters and indicated a possible flavor control way by using different OAs and OA concentrations

Molecules published new progress about Esters Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

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

Cai, Yuanhong; Tan, Donghang; Zhang, Qiqi; Lv, Wenxin; Li, Qingjiang; Wang, Honggen published the artcile< Synthesis of difluoromethylated benzylborons via rhodium(I)-catalyzed fluorine-retainable hydroboration of gem-difluoroalkenes>, Related Products of 112-63-0, the main research area is rhodium catalyzed fluorine retainable hydroboration gem fluoroalkene; fluoromethylated benzylborane preparation.

The synthesis of borylated organofluorines is of great interest due to their potential values as synthons in modular construction of F-containing mols. Reported herein is a Rh-catalyzed hydroboration of aryl gem-difluoroalkenes leading to α-difluoromethylated benzylborons. The use of cationic Rh catalyst and a biphosphine ligand with large bite angle was crucial for reactivity by offering good regioselectivity and diminishing the undesired β-F elimination. Preliminary derivatizations of the products were conducted to showcase the utility of this protocol.

Chinese Chemical Letters published new progress about Boranes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (difluoromethylated benzylborons). 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

Ghaffari, Behnaz; Preshlock, Sean M.; Plattner, Donald L.; Staples, Richard J.; Maligres, Peter E.; Krska, Shane W.; Maleczka, Robert E.; Smith, Milton R. published the artcile< Silyl Phosphorus and Nitrogen Donor Chelates for Homogeneous Ortho Borylation Catalysis>, Related Products of 112-63-0, the main research area is ortho silylphosphinylbenzene tethered iridium cyclooctadiene preparation catalyst orthoborylation; crystal structure ortho silylphosphinylbenzene tethered iridium cyclooctadiene; mol structure ortho silylphosphinylbenzene tethered iridium cyclooctadiene.

Ir catalysts supported by ortho-(diisopropylsilyl)(di-p-tolylphosphino)benzene bidentate ligand that contains P- or N-donors, effects ortho-borylations for a range of substituted aromatics E.g., reaction of C6H5CO2Me with bis(pinacolato)diboron (B2pin2) in the presence of 1.25 mol% [Ir(OMe)(cod)]2/ 2.5 mol% (p-tol)2PC6H4-2-(SiHiPr2) in THF at 80° to give 72% yield of Me 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate. The substrate scope is broad, and the modular ligand synthesis allows for flexible catalyst design.

Journal of the American Chemical Society published new progress about Amides Role: RCT (Reactant), RACT (Reactant or Reagent) (benzamides). 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

Yamaguchi, Akihiro; Okazaki, Mitsuo published the artcile< Modified wittig reaction. II. Preparation of α-bromo-4-nitrostilbenes and diphenylacetylenes>, Application In Synthesis of 112-63-0, the main research area is stilbene halo nitro; halonitrostilbene preparation Wittig; nitrohalostilbene preparation Wittig; Wittig aldehyde halobenzylphosphonate; aromatic aldehyde Wittig reaction; phosphonate haloenzyl Wittig reaction; arylnitrophenylacetylene preparation Wittig.

α-Bromo-4-nitrostilbenes and diphenylacetylenes were prepared by a modified Wittig reaction. Diethyl α-bromo-p-nitrobenzylphosphonate (I) was obtained quant. by bromination of diethyl p-nitrobenzylphosphonate. Treatment of I with aromatic aldehydes in the presence of an equivalent amount of Na alkoxide in alc. at room temperature gave the corresponding α-bromo-4-nitrostilbenes in good yield. The use of two equivalent base gave diphenylacetylenes. Similarly, the reaction of α-iodo-p-nitrobenzylphosphonate with aromatic aldehydes was investigated.

Nippon Kagaku Kaishi published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

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

Ramchandani, Shanaya; Mohan, Chakrabhavi Dhananjaya; Mistry, Jenaifer Rustom; Su, Qi; Naz, Irum; Rangappa, Kanchugarakoppal S.; Ahn, Kwang Seok published the artcile< The multifaceted antineoplastic role of pyrimethamine against human malignancies>, SDS of cas: 112-63-0, the main research area is review cancer chronic lymphocytic leukemia pyrimethamine anticancer drug; MAPK; STAT3; apoptosis; cancer; drug repurposing; pyrimethamine.

A review. Cancer accounted for nearly 10 million deaths in 2020 and is the second leading cause of death worldwide. The chemotherapeutic agents that are in clin. practice possess a broad range of severe adverse effects towards vital organs which emphasizes the importance of the discovery of new therapeutic agents or repurposing of existing drugs for the treatment of human cancers. Pyrimethamine is an antiparasitic drug used for the treatment of malaria and toxoplasmosis with a well-documented excellent safety profile. In the last 5 years, numerous efforts have been made to explore the anticancer potential of pyrimethamine in in vitro and in vivo preclin. models and to repurpose it as an anticancer agent. The studies have demonstrated that pyrimethamine inhibits oncogenic proteins such as STAT3, NF-κB, DX2, MAPK, DHFR, thymidine phosphorylase, telomerase, and many more in a different types of cancer models. Moreover, pyrimethamine has been reported to work in synergy with other anticancer agents, such as temozolomide, to induce apoptosis of tumor cells. Recently, the results of phase-1/2 clin. trials demonstrated that pyrimethamine administration reduces the expression of STAT3 signature genes in tumor tissues of chronic lymphocytic leukemia patients with a good therapeutic response. In the present article, we have reviewed most of the published articles related to the antitumor effects of pyrimethamine in malignancies of breast, liver, lung, skin, ovary, prostate, pituitary, and leukemia in in vitro and in vivo settings. We have also discussed the pharmacokinetic profile and results of clin. trials obtained after pyrimethamine treatment. From these studies, we believe that pyrimethamine has the potential to be repurposed as an anticancer drug.

IUBMB Life published new progress about Animal gene, DHFR Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

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

Vidomanova, Eva; Majercikova, Zuzana; Dibdiakova, Katarina; Pilchova, Ivana; Racay, Peter; Hatok, Jozef published the artcile< The effect of temozolomide on apoptosis-related gene expression changes in glioblastoma cells.>, Synthetic Route of 112-63-0, the main research area is apoptosis; glioblastoma; temozolomide gene expression..

BACKGROUND: Glioblastoma (GB) is the most common and biologically the most aggressive primary brain tumor of the central nervous system (CNS) in adults. Standard treatment for newly diagnosed GB consists of surgical resection, radiotherapy, and chemotherapy with temozolomide (TMZ). Despite numbers of studies, a resistance to chemotherapy is the major obstacle to successful GB treatment. OBJECTIVES: The aim of our study was to detect the sensitivity of glioblastoma T98G cells to TMZ treatment and subsequently to determine the expression changes of apoptosis-associated genes in glioblastoma cells. MATERIAL AND METHODS: The human glioblastoma cell line (T98G) was treated with specified concentrations of TMZ during different time periods. Their viability was measured by colorimetric MTT assay and the activation of the apoptotic pathway was determined by measuring the caspase 3/7 activity. Commercial pre-designed microfluidic array was used to quantify expression of human apoptosis-associated genes. RESULTS: The untreated control of T98G cell line against human brain total RNA standards reported significant changes in several apoptotic genes expression levels. We identified also a deregulation in geneexpression levels between the TMZ treated and untreated T98G cells associated with apoptotic pathways. After 48 hours of exposure of T98G cells to TMZ, we observed a significant deregulation ofseven genes: BBC3, BCL2L1, RIPK1, CASP3, BIRC2, CARD6 and DAPK1. These results can contribute to the importance of apoptosis in glioblastoma cells metabolism and effect of TMZ treatment. CONCLUSIONS: Identification of apoptotic gene panel in T98G cell line could help to improve understanding of brain tumor cells metabolism. Recognizing of the pro-apoptotic and anti-apoptotic genes expression changes could contribute to clarify the sensitivity to TMZ therapy and molecular base in healthy and tumor cells (Tab. 1, Fig. 2, Reference 48).

Bratislavske lekarske listy published new progress about 112-63-0. 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

Copcu, Burcu; Sayin, Koray; Karakas, Duran published the artcile< Investigations substituent effect on structural, spectral and optical properties of phenylboronic acids>, Related Products of 112-63-0, the main research area is phenylboronic acid substituent effect spectral optical property.

Ortho- and para-substituent arylboronic acid are investigated. Geometric structure and structural properties of these compounds are done. IR and NMR spectrum are calculated for the spectral characterizations. Contour diagram of frontier MOs which are HOMO and LUMO is calculated and mol. electrostatic potential (MEP) map of them are obtained to evaluate the electronic properties and to determine the active site on the mols. Non-linear optical (NLO) properties are investigated. UV-VIS spectrum of studied compounds is calculated and the wavelength of main band is examined Then, some quantum chem. parameters which are total static dipole moment, the average linear polarizability, the anisotropy of the polarizability and first hyperpolarizability are calculated and it was found that B3 is the best NLO material for applications.

Journal of Molecular Structure published new progress about Anisotropy. 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

Qiao, Zhi; Fu, Wen; Zhang, Yongchao; Chen, Ruijia; Xu, Zhiping; Li, Zhong; Shao, Xusheng published the artcile< Azobenzene-Semicarbazone Enables Optical Control of Insect Sodium Channels and Behavior>, HPLC of Formula: 2557-13-3, the main research area is azobenzene semicarbazone optical photoswitching sodium channel insect behavior; invertebrates; metaflumizone; photopharmacology; photoswitches; sodium channels.

Photopharmacol. uses mol. photoswitches to establish control over the action of bioactive mols. The application of photopharmacol. in the research of invertebrate sodium channels has not been investigated. Here we report several photochromic ligands of metaflumizone. One ligand, termed ABM04 (I), underwent reversible trans-cis isomerization under UV or blue light irradiation cis-ABM04 had excellent larvicidal activity against mosquito larvae with an LC50 value of 4.39 μM and showed insecticidal activity against Mythimna separata with an LC50 value of 7.19 μM. However, trans-ABM04 was not found to have biol. activity. ABM04 (10 μM) can induce depolarization of dorsal unpaired median neurons and enable the real-time photoregulation of mosquito larval behavior. The precise regulation of invertebrate sodium channels is realized for the first time, which provides a new strategy for the basic and accurate research of invertebrate sodium channels.

Journal of Agricultural and Food Chemistry published new progress about Aedes albopictus. 2557-13-3 belongs to class esters-buliding-blocks, and the molecular formula is C9H7F3O2, HPLC of Formula: 2557-13-3.

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

Wei, Le; Ma, Yong; Gu, Yuting; Yuan, Xuzhou; He, Ying; Li, Xinjian; Zhao, Liang; Peng, Yang; Deng, Zhao published the artcile< Ru-Embedded Highly Porous Carbon Nanocubes Derived from Metal-Organic Frameworks for Catalyzing Reversible Li2O2 Formation>, Category: esters-buliding-blocks, the main research area is ruthenium porous carbon nanocube catalyst lithium oxygen battery; Li−O2 batteries; metal−organic frameworks; oxygen catalyst; porous carbon; ruthenium nanoparticles.

Rechargeable lithium-oxygen batteries (LOBs) have attracted increasing attention due to their high energy d. but highly rely on the development of efficient oxygen catalysts for reversible Li2O2 deposition/decomposition Herein, highly porous carbon nanocubes with a sp. surface area up to 1600 m2 g-1 are synthesized and utilized to tightly anchor Ru nanoparticles for using as the oxygen-cathode catalyst in LOBs, achieving a low charge/discharge potential gap of only 0.75 V, a high total discharge capacity of 17,632 mA h g-1, and a superb cycling performance of 550 cycles at 1000 mA g-1. Comprehensive ex situ and operando characterizations unravel that the outstanding LOB performance is ascribed to the highly porous catalyst structure embedding rich active sites that synergistically function in reducing overpotentials, suppressing parasitic reactions, accommodating reaction products, and promoting mass and charge transportation.

ACS Applied Materials & Interfaces published new progress about Adsorption (isotherm). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

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