Tag: M.W=250-300

Jiao, Wenhui; Zhu, Shan; Shao, Jingrong; Zhang, Xiaoliang; Xu, Yanglu; Zhang, Yixuan; Wang, Ran; Zhong, Yuxu; Kong, Dexin published the artcile< ZSTK474 sensitizes glioblastoma to temozolomide by blocking homologous recombination repair>, Synthetic Route of 112-63-0, the main research area is .

Glioblastoma (GBM) is the most common primary malignant brain tumor in adults. Temozolomide (TMZ) is used as the standard chemotherapeutic agent for GBM but with limited success, and treatment failure is mainly due to tumor resistance. One of the leading causes of TMZ resistance is the upregulation of the DNA repair mechanism. Therefore, targeting the DNA damage response (DDR) is proposed to be an effective strategy to sensitize tumor cells to TMZ. In the present study, we demonstrated that the combined use of the PI3K inhibitor ZSTK474 and TMZ showed synergetic anticancer effects on human GBM cells in vitro and in vivo. The combination treatment led to significantly increased cell apoptosis and DNA double strand breaks (DSBs). In addition, a mechanistic study indicated that TMZ enhanced the homologous recombination (HR) repair efficiency in GBM cells, while ZSTK474 impaired HR repair by blocking the phosphorylation of ATM and the expression of BRCA1/2 and Rad51, thereby sensitizing GBM cells to TMZ. Moreover, TMZ activated the PI3K signaling pathway through upregulation of the PI3K catalytic subunits p110α and p110β and the phosphorylation of Akt. Meanwhile, ZSTK474 blocked the activity of the PI3K/Akt pathway. Taken together, our findings suggested that the combination of ZSTK474 and TMZ might be a potential therapeutic option for GBM.

BioMed Research International 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

Li, Jian-Yuan; Miklossy, Gabriella; Modukuri, Ram K.; Bohren, Kurt M.; Yu, Zhifeng; Palaniappan, Murugesan; Faver, John C.; Riehle, Kevin; Matzuk, Martin M.; Simmons, Nicholas published the artcile< Palladium-Catalyzed Hydroxycarbonylation of (Hetero)aryl Halides for DNA-Encoded Chemical Library Synthesis>, SDS of cas: 112-63-0, the main research area is palladium catalyzed hydroxycarbonylation heteroaryl halide DNA encoded library synthesis.

A strategy for DNA-compatible, palladium-catalyzed hydroxycarbonylation of (hetero)aryl halides on DNA-chem. conjugates has been developed. This method generally provided the corresponding carboxylic acids in moderate to very good conversions for (hetero)aryl iodides and bromides, and in poor to moderate conversions for (hetero)aryl chlorides. These conditions were further validated by application within a DNA-encoded chem. library synthesis and subsequent discovery of enriched features from the library in selection experiments against two protein targets.

Bioconjugate Chemistry published new progress about Carbonylation. 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

Haynes, Cally J. E.; Berry, Stuart N.; Garric, Joachim; Herniman, Julie; Hiscock, Jennifer R.; Kirby, Isabelle L.; Light, Mark E.; Perkes, Gregory; Gale, Philip A. published the artcile< Small neutral molecular carriers for selective carboxylate transport>, Application In Synthesis of 112-63-0, the main research area is crystal structure neutral carrier carboxylate transport.

A series of neutral thiourea receptors were found to mediate the antiport of chloride with a range of biol. relevant carboxylate anions across phospholipid bilayers. Simple structural modification of the carriers resulted in a change in the lactate/pyruvate transport selectivity.

Chemical Communications (Cambridge, United Kingdom) published new progress about Bilayer biological membrane (unilamellar vesicles). 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

Chen, Xiaoai; Chen, Haiqiang; Xiao, Jie; Liu, Jingyi; Tang, Niang; Zhou, Aimei published the artcile< Variations of volatile flavour compounds in finger citron (Citrus medica L. var. sarcodactylis) pickling process revealed by E-nose, HS-SPME-GC-MS and HS-GC-IMS>, Application of C19H34O2, the main research area is Citrus volatile flavor pickling E nose; E-nose; Finger citron; HS-GC-IMS; HS-SPME-GC-MS; Pickling process; Volatile flavour.

In this study, the variations of volatile flavor components in the pickling process of finger citron were investigated by electronic nose (E-nose), headspace solid phase microextraction-gas chromatog.-mass spectrometry (HS-SPME-GC-MS) and headspace-gas chromatog.-ion mobility spectrometry (HS-GC-IMS). Linalool, limonene, (E)-3,7-dimethyl-1,3,6-octatriene, myrcene, 3-carene, β-pinene, α-pinene, terpinolene, 1-methyl-4-(1-methylethyl)-1,4-cyclohexadiene, α-terpinene, (S)-β-bisabolene, 1-isopropyl-2-methylbenzene and 1-methyl-4-(1-methylethenyl)-benzene were the stable substances at relatively high contents in finger citron at different pickling process. Salting and drying steps in the pickling process exerted greatest influence on the volatile components of finger citron. Salting promoted the generation of aldehydes, esters and acids, but led to the disappearance of alcs., while drying promoted the generation of alcs., phenols, aldehydes and acids at the expense of reduction in terpenoids. Our study revealed that the characteristic volatile compounds of finger citron pickled products was mainly formed by the biol. reactions in the salting stage and thermal chem. transformations in the drying stage. This study also validated the suitability of E-nose combined with HS-SPME-GC-MS and HS-GC-IMS in tracking the changes of volatile components in finger citron during the pickling process.

Food Research International published new progress about Citron. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

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

Zhou, Jian; Xu, Ningbo; Liu, Boyang; Wang, Chenyang; He, Zhenyan; Lenahan, Cameron; Tang, Wenhui; Zeng, Huijun; Guo, Hongbo published the artcile< lncRNA XLOC013218 promotes cell proliferation and TMZ resistance by targeting the PIK3R2-mediated PI3K/AKT pathway in glioma>, Related Products of 112-63-0, the main research area is Sp1; chemoresistance; glioma; lncRNA XLOC; temozolomide.

The discovery of long noncoding RNAs (lncRNAs) has improved the understanding of development and progression in various cancer subtypes. However, the role of lncRNAs in temozolomide (TMZ) resistance in glioblastoma multiforme (GBM) remains largely undefined. In this present study, the differential expression of lncRNAs was identified between U87 and U87 TMZ-resistant (TR) cells. lncRNA XLOC013218 (XLOC) was drastically upregulated in TR cells and was associated with poor prognosis in glioma. Overexpression of XLOC markedly increased TMZ resistance, promoted proliferation, and inhibited apoptosis in vitro and in vivo. In addition, RNA-seq anal. and gain-of-function or loss-of-function studies revealed that PIK3R2 was the potential target of XLOC. Mechanistically, XLOC recruited specificity protein 1 (Sp1) transcription factor and promoted the binding of Sp1 to the promoters of PIK3R2, which elevated the expression of PIK3R2 in both mRNA and protein levels. Finally, PIK3R2-mediated activation of the PI3K/AKT signaling pathway promoted TMZ resistance and cell proliferation, but inhibited cell apoptosis. In conclusion, these data highlight the vital role of the XLOC/Sp1/PIK3R2/PI3K/AKT axis in GBM TMZ resistance.

Cancer Science published new progress about 112-63-0. 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

Glen, Pauline E.; O’Neill, James A. T.; Lee, Ai-Lan published the artcile< Synthesis of a C1-symmetric Box macrocycle and studies towards active-template synthesis of mechanically planar chiral rotaxanes>, Synthetic Route of 112-63-0, the main research area is box macrocycle active template synthesis mech planar chiral rotaxane.

A C1-sym. Box macrocycle has been synthesized for the first time. The Box macrocycle along with other C1 and C2-sym. Box ligands were evaluated and compared as ligands in the Cadiot-Chodkiewicz, oxidative Heck and CuAAC “”click”” reactions as part of our studies towards achieving active-metal template synthesis of mech. planar chiral rotaxanes. This study constitutes the first report of Cadiot-Chodkiewicz and CuAAC “”click”” reactions using Box ligands, as well as the first dedicated study of oxidative Heck reactions using Box ligands.

Tetrahedron published new progress about Alkadiynes Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 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

Bedford, G. R.; Partridge, M. W. published the artcile< Convenient preparation of ο-aminoaryl cyanides>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is .

ο-Aminophenyl cyanide (I) and the related compounds can be prepared by thermal decomposition of isatin 3-oxime (II) and related isatins in good yield. The method is applicable to the production of substituted ο-aminoaryl cyanides having orientations not readily accessible by methods hitherto used. Decomposition of the oximes is vigorous, and for a 50 g. amount is complete in about 3 min. When no solvent is used, provision must be made to trap the aminoaryl cyanide entrained in the evolved CO2. II (50 g., recrystallized from 50% aqueous alc.) was melted and heated so that I was collected in receivers containing Et2O. Evaporation of the Et2O gave pure I in 65% yield, m. 49-50°; Ac derivative, m. 134°. Similarly 48 g. 5-methylisatin 3-oxime gave 17.6 g. 2-amino-4-methylphenyl cyanide, b15 150-2°, m. 59-60°; 5-chloroisatin 3-oxime (5 g.) decomposed during 15 min. at 250° gave 2 g. 2-amino-5-chlorophenyl cyanide, m. 96-8°; 7-carboxyisatin 3-oxime (5.1 g.) gave 0.62 g. 2-amino-5-cyanobenzoic acid, needles, m. 280-2° (this compound was amphoteric and gave a pos. diazo test); 5-nitroisatin 3-oxime (5 g.) heated 45 min. in refluxing PhNO2 gave 2.6 g. 2-amino-5-nitrophenyl cyanide, m. 205-6°.

Journal of the Chemical Society published new progress about Nitriles Role: BIOL (Biological Study). 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

Yu, Wuyang; Cheng, Qian; Ye, Jingjie; Zhang, Mingkang; Zhang, Cheng; Gao, Fan; Ding, Xinglan; Feng, Jun; Zhang, Xian-Zheng published the artcile< Establishment of Facile Nanomedicine Construction Methodology to Comprehensively Overcome Hurdles across Tumor-Specific Nano-Delivery>, Application In Synthesis of 112-63-0, the main research area is hyaluronic acid nitroindol carboxylic acid tumor antitumor CD44 targeting.

To advance clin. translation of antitumor nanomedicines, the development of a universally applicable, facile, and safe methodol. for nanomedicine construction to overcome major hurdles across tumor-specific nano-delivery in an all-in-one manner would be highly desirable. This study puts forward a HAylation strategy based on pos. charged nanocore (NC+) and hyaluronic acid (HA) that is naturally present in the human body. HAylation leads to prolonged blood duration and active tumor targeting. It is demonstrated that HAylation facilitates not only selective uptake of nanomedicines by tumor cells but also deep tumor infiltration via the special transcytosis pathway. This characteristic is ascribed to the site-specific exposure of NC+ in tumor cells due to fast HA degradation exclusively in response to HAase and an acidic pH in the lysosome after tumor accumulation. HAylation enables the free construction of a NC+ nano-core with versatile functions. Here, a NC+ core is fabricated by directly assembling a photodynamic therapy (PDT) agent and an inhibitor of the DNA base excision repair (BER) pathway. The inhibition of BER-mediated DNA repair has proven powerful to amplify antitumor efficacy since DNA damage is one major cell-killing mechanism for many anticancer therapeutics. HAylation holds promise for the simplification of the industrial production of nanomedicines and arms nanomedicines to thoroughly overcome fundamental nano-delivery hurdles.

Advanced Functional Materials published new progress about Antitumor agents. 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

Zhao, Chenglong; Weber, Stefan; Schols, Dominique; Balzarini, Jan; Meier, Chris published the artcile< Prodrugs of γ-Alkyl-Modified Nucleoside Triphosphates: Improved Inhibition of HIV Reverse Transcriptase>, Related Products of 112-63-0, the main research area is nucleoside triphosphate prodrug HIV reverse transcriptase human; DNA polymerases; antiviral agents; biological activity; nucleoside triphosphates; prodrugs.

The development of nucleoside triphosphate prodrugs is one option to apply nucleoside reverse transcriptase inhibitors. Herein, we report the synthesis and evaluation of d4TTP analogs, in which the γ-phosphate was modified covalently by lipophilic alkyl residues, and acyloxybenzyl prodrugs of these γ-alkyl-modified d4TTPs, with the aim of delivering of γ-alkyl-d4TTP into cells. Selective formation of γ-alkyl-d4TTP was proven with esterase and in CD4+-cell extracts In contrast to d4TTP, γ-alkyl-d4TTPs proved highly stable against de-phosphorylation. Primer extension assays with HIV reverse transcriptase (RT) and DNA-polymerases α, β or γ showed that γ-alkyl-d4TTPs were substrates for HIV-RT only. In antiviral assays, compounds were highly potent inhibitors of HIV-1 and HIV-2 also in thymidine-kinase-deficient T-cell cultures (CEM/TK-). Thus, the intracellular delivery of such γ-alkyl-nucleoside triphosphates may potentially lead to nucleoside triphosphates with a higher selectivity towards the viral polymerase that can act in virus-infected cells.

Angewandte Chemie, International Edition published new progress about AIDS (disease). 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

Jankowski, Piotr; Andersson, Rasmus; Johansson, Patrik published the artcile< Designing High-Performant Lithium Battery Electrolytes by Utilizing Two Natures of Li+ Coordination: LiTDI/LiTFSI in Tetraglyme>, HPLC of Formula: 112-63-0, the main research area is tetraglyme lithium battery electrolyte spectrum.

Highly concentrated electrolytes (HCEs) based on glymes, such as tetraglyme (G4), are currently the focus of much battery research, primarily due to their unique properties – especially with respect to ion transport and electrochem. stability. While the LiTFSI-G4 and LiTDI-G4 systems both have been studied extensively, we here design their hybrid electrolytes to answer; will the resulting properties be averages/superpositions or will there be synergies created We find the latter to be true and demonstrate that the most performant electrolytes are obtained by introducing a minor amount of LiTDI to an LiTFSI based electrolyte, which promotes the disproportionation and formation of “”free”” cations and at the same to avoid large aggregates – shown comprehensively both exptl. and by different modeling approaches and analyses combined. This electrolyte composition strategy can be generalized to other salts and solvents and thus a route towards a flora of novel battery electrolytes is here suggested.

Batteries & Supercaps published new progress about Battery electrolytes. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

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