Category: 112-63-0

Li, Xiaoning; Li, Yehui; Wang, Xiang; Wang, Haijun published the artcile< Zirconium-Gallic Acid Coordination Polymer: Catalytic Transfer Hydrogenation of Levulinic Acid and Its Esters into γ-Valerolactone>, Reference of 112-63-0, the main research area is zirconium catalyst preparation surface structure ethyl levulinate hydrogenation.

The conversion of Et levulinate (EL) to produce γ-valerolactone (GVL) through catalytic transfer hydrogenation (CTH) reaction plays a crucial role in the field of biomass catalytic conversion. In this work, a novel Zr-base catalyst with phenate group, phenolic hydroxyl and carboxyl in its structure was prepared by the co-precipitation of natural sources gallic acid and ZrCl4. It was found that Zr-GA has an excellent catalytic performance for this reaction and satisfactory GVL yield could be achieved. Besides, Zr-GA could be easily separated from the reaction system and reused at least six times without a significantly decrease in activity. Meanwhile, various characterizations had proved that Zr-GA is a porous material with acid-base bifunctional sites. The main reason for the high catalytic activity of the Zr-GA was that the synergetic effects of Lewis acid/base sites and Bronsted acid sites and appropriate textural properties. In addition, a possible reaction mechanism was proposed in conjunction with the poisoning experiment and previous reports. The heterogeneous catalyst Zr-GA prepared with gallic acid as a raw material has low cost and recyclability, and has great potential in green chem.

Catalysis Letters published new progress about Crystallinity. 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

Chen, Hao; Li, Chunlin; Hu, Haiyang; Zhang, Bin published the artcile< Activated TRPA1 plays a therapeutic role in TMZ resistance in glioblastoma by altering mitochondrial dynamics>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Glioblastoma; Mitochondrial dysfunction; Oxidative stress; TRPA1; Temozolomide.

Abstract: Background: Glioblastoma (GBM) represents nearly one-half of primary brain tumors, and the median survival of patients with GBM is only 14.6 mo. Surgery followed by radiation with concomitant temozolomide (TMZ) therapy is currently the standard of care. However, an increasing body of evidence suggests that GBM acquires resistance to TMZ, compromising the effect of the drug. Thus, further exploration into the mechanism underlying this resistance is urgently needed. Studies have demonstrated that TMZ resistance is associated with DNA damage, followed by altered reactive oxygen species (ROS) production in mitochondria. Studies have also showed that Ca2+-related transient receptor potential (TRP) channels participate in GBM cell proliferation and metastasis, but the detailed mechanism of their involvement remain to be studied. The present study demonstrates the role played by TRPA1 in TMZ resistance in GBM and elucidates the mechanism of resistance. Methods: U251 and SHG-44 cells were analyzed in vitro. A CCK-8 assay was performed to verify the effect of TMZ toxicity on GBM cells. Intracellular ROS levels were detected by DCFH-DA assay. A MitoSOX Red assay was performed to determine the mitochondrial ROS levels. Intracellular Ca2+ levels in the cells were determined with a Fluo-4 AM calcium assay kit. Intracellular GSH levels were determined with GSH and GSSG Assay Kit. MGMT protein, Mitochondrial fission- and fusion-, apoptosis- and motility-related protein expression was detected by western blot assay. A recombinant lentiviral vector was used to infect human U251 cells to overexpress shRNA and generate TRPA1+/+ and neg. control cells. All experiments were repeated. Results: In the U251 and SHG-44 cells, TMZ induced a small increase in the apoptosis rate and intracellular and mitochondrial ROS levels. The expression of antioxidant genes and antioxidants in these cells was also increased by TMZ. However, pretreatment with a TRPA1 agonist significantly decreased the level of antioxidant gene and antioxidants expression and enhanced intracellular and mitochondrial ROS levels. Also TMZ induced the level of MGMT protein increased, and pretreatment with a TRPA1 agonist decreased the MGMT expression. Moreover, Ca2+ influx, mitochondrial damage and cell apoptosis were promoted, and the balance between mitochondrial fission and fusion protein expression was disrupted in these GBM cells. Pretreatment with a TRPA1 inhibitor slightly enhanced the level of antioxidant gene expression and reduced the apoptosis rate. TRPA1 gene overexpression in the U251 cells was similar to that after inhibitor intervention, confirming the aforementioned exptl. results. Conclusion: The present study proved that activating TRPA1 in glioma cells, which leads to mitochondrial damage and dysfunction and ultimately to apoptosis, may decrease the TMZ resistance of GBM cells.

BMC Molecular and Cell Biology published new progress about 112-63-0. 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

Nguyen, Duc Hanh; Perez-Torrente, Jesus J.; Lomba, Laura; Victoria Jimenez, M.; Lahoz, Fernando J.; Oro, Luis A. published the artcile< Unsaturated iridium pyridinedicarboxylate pincer complexes with catalytic activity in borylation of arenes>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is crystal structure cyclooctenyl iridium pyridinedicarboxylate pincer complex preparation; mol structure cyclooctenyl iridium pyridinedicarboxylate pincer complex; iridium pyridinedicarboxylate pincer complex preparation arene borylation catalyst; cyclooctenyl iridium pyridinedicarboxylate pincer complex preparation pyridine exchange kinetics.

Unsaturated σ,π-cyclooctenyl and hydrido Ir(III) complexes bearing an unusual tridentate dianionic ONO pincer-type ligand have been straightforwardly obtained from 2,6-pyridinedicarboxylic acid and standard Ir(I) starting materials. These complexes efficiently catalyzed the arene C-H borylation under thermal conditions.

Dalton Transactions published new progress about Activation enthalpy. 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

Agarwal, Sameer; Sasane, Santosh; Shah, Hardik A.; Pethani, Jignesh P.; Deshmukh, Prashant; Vyas, Vismit; Iyer, Pravin; Bhavsar, Harsh; Viswanathan, Kasinath; Bandyopadhyay, Debdutta; Giri, Poonam; Mahapatra, Jogeswar; Chatterjee, Abhijit; Jain, Mukul R.; Sharma, Rajiv published the artcile< Discovery of N-Cyano-sulfoximineurea Derivatives as Potent and Orally Bioavailable NLRP3 Inflammasome Inhibitors>, Related Products of 112-63-0, the main research area is cyanosulfoximineurea synthesis pharmacokinetics NLRP3 inflammasome IL1beta inflammation.

NLRP3 inflammasome mediated release of interleukin-1β (IL-1β) has been implicated in various diseases. In this study, rationally designed mimics of sulfonylurea moiety were investigated as NLRP3 inhibitors. Our results culminated into discovery of series of unprecedented N-cyano sulfoximineurea derivatives as potent NLRP3 inflammasome inhibitors. Compound 15 (IC50 = 7 nM) and analogs were found to be highly potent and selective NLRP3 inflammasome inhibitor with good pharmacokinetic profile. These effects translate in vivo, as 15, 29, and 34 significantly inhibit NLRP3 dependent IL-1β secretion in mice.

ACS Medicinal Chemistry Letters published new progress about Anti-inflammatory 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

Qin, Lihong; Mao, Huiwen; Wang, Jianguo; Wang, Yuanyaun; Khan, Salman A.; Zhang, Ying; Qiu, Hong; Jiang, Longwei; He, Lingfeng; Zhang, Yan; Jia, Shaochang published the artcile< A novel polymerase β inhibitor from phage displayed peptide library augments the anti-tumour effects of temozolomide on colorectal cancer>, Category: esters-buliding-blocks, the main research area is temozolomide 10D anticancer polymerasebeta colorectal cancer phage display library; CRC; DNA repair; Inhibitor; Polβ; TMZ.

The therapeutic efficacy of TMZ, a common used drug for chemotherapy, is limited by the resistance from colorectal cancer cells. Base excision repair (BER) pathway has been identified as one of the reasons for drug resistance. By blocking Polβ-dependent BER (Base Excision Repair) pathway, the efficacy of TMZ treatment can be improved greatly. Several Polβ inhibitors that have been identified could not become approved drugs due to lack of potency or specificity. To find therapeutic candidates with exquisite specificity and high affinity to Polβ, phage display technol. was used in the current research. We screened out a candidate Polβ inhibitor, 10 D, that can inhibit the activity of Polβand SP-BER (Short-Patch Base excision Repair) pathway. Co-treatment with 10 D enhanced the sensitivity of colorectal cancer (CRC) cells to TMZ both in vitro and in vivo. Our data suggested that the novel Polβ inhibitor we identified can improve TMZ efficacy and optimize CRC chemotherapy.

Journal of Chemotherapy (Abingdon, United Kingdom) published new progress about Colorectal neoplasm. 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

Ying, Hanglu; Yao, Jie; Wu, Fan; Zhao, Yufen; Ni, Feng published the artcile< A mild and concise synthesis of aryloxy phosphoramidate prodrug of alcohols via transesterification reaction>, Category: esters-buliding-blocks, the main research area is aryloxy phosphoramidate prodrug alc transesterification reaction.

A synthesis of aryloxy phosphoramidate prodrug of alcs. enabled by a transesterification strategy is described here. This reaction operates under mild conditions and thus has excellent functional group tolerance. This method provides an efficient and practical solution to the rapid construction of the aryloxy phosphoramidate prodrugs library for potential SAR studies.

RSC Advances published new progress about Alcohols Role: BUU (Biological Use, Unclassified), BIOL (Biological Study), USES (Uses). 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

O’Rawe, Michael; Wickremesekera, Agadha C.; Pandey, Ramesh; Young, David; Sim, Dalice; FitzJohn, Trevor; Burgess, Carl; Kaye, Andrew H.; Tan, Swee T. published the artcile< Treatment of glioblastoma with re-purposed renin-angiotensin system modulators: Results of a phase I clinical trial>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is glioblastoma renin angiotensin system modulators repurposing clin trial human; Drug re-purposing; Glioblastoma; Glioblastoma stem cells; Renin-angiotensin system; Renin-angiotensin system inhibitors; Renin-angiotensin system modulators.

Glioblastoma is the most common and most aggressive primary brain cancer in adults. Standard treatment of glioblastoma consisting of maximal safe resection, adjuvant radiotherapy and chemotherapy with temozolomide, results in an overall median survival of 14.6 mo. The aggressive nature of glioblastoma has been attributed to the presence of glioblastoma stem cells which express components of the renin-angiotensin system (RAS). This phase I clin. trial investigated the tolerability and efficacy of a treatment targeting the RAS and its converging pathways in patients with glioblastoma. Patients who had relapsed following standard treatment of glioblastoma who met the trial criteria were commenced on dose-escalated oral RAS modulators (propranolol, aliskiren, cilazapril, celecoxib, curcumin with piperine, aspirin, and metformin). Of the 17 patients who were enrolled, ten completed full dose-escalation of the treatment. The overall median survival was 19.9 (95% CI:14.1-25.7) months. Serial FET-PET/CTs showed a reduction in both tumor volume and uptake in one patient, an increase in tumor uptake in nine patients with decreased (n = 1), unchanged (n = 1) and increased (n = 7) tumor volume, in the ten patients who had completed full dose-escalation of the treatment. Two patients experienced mild side effects and all patients had preservation of quality of life and performance status during the treatment. There is a trend towards increased survival by 5.3 mo although it was not statistically significant. These encouraging results warrant further clin. trials on this potential novel, well-tolerated and cost-effective therapeutic option for patients with glioblastoma.

Journal of Clinical Neuroscience published new progress about Bradycardia. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Chen, Yu; Li, Jiyang; Kong, Xiangbang; Zhang, Yiyong; Zhang, Yingjie; Zhao, Jinbao published the artcile< Enhancing Catalytic Conversion of Polysulfides by Hollow Bimetallic Oxide-Based Heterostructure Nanocages for Lithium-Sulfur Batteries>, HPLC of Formula: 112-63-0, the main research area is catalytic conversion polysulfides copper iron oxide lithium sulfur battery.

Performance improvement of lithium-sulfur batteries (LSBs) is restricted by the dissolution and shuttle of lithium polysulfides (LiPSs). Prussian blue analogs (PBAs) and their derived nanomaterials are ideal sulfur-fixing materials owing to their abilities to anchor LiPSs, accelerate redox conversion, and smooth Li2S precipitation Herein, the hollow CoxFe3-xO4 heterostructure nanocages with highly interconnected pore architecture obtained by a PBA-assisted strategy are synthesized to overcome the abovementioned obstructions of LSBs. It is found that the bimetallic oxide-based heterostructure can not only inhibit LiPS diffusion via forming metal-sulfur bonds but also accelerate the LiPS conversion kinetics. Meanwhile, the hollow porous structure contributes to the phys. confinement of LiPSs and acts as a buffer for the volume change. Thereby, the rate capability and cycling stability of hollow CoxFe3-xO4@S composite electrodes have been improved significantly. As a result, the hollow CoxFe3-xO4@S cell displays an excellent initial capacity of 1301.6 mAh g-1 at a c.d. of 200 mA g-1. Even at 1 A g-1, it exhibits an outstanding initial capacity of 898.9 mAh g-1 with a negligible capacity loss rate, which is only 0.106% per cycle after 500 cycles. This work provides a new perspective for the construction and design of multifunctional hollow heterostructure materials for more efficient and stable LSBs.

ACS Sustainable Chemistry & Engineering published new progress about Adsorption (isotherm). 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

Zhou, Yundong; Zhang, Yiling; Zong, Hong; Lu, Xinyao; Shen, Wei; Zhuge, Bin published the artcile< Chemical constituents, antibacterial activity and mechanism of Paeonia suffruticosa Andr. buds extract against Staphylococcus aureus and Escherichia coli O157:H7>, Related Products of 112-63-0, the main research area is phytochem antibacterial Paeonia bud extract Staphylococcus Escherichia; Escherichia coli O157:H7; Paeonia suffruticosa Andr. buds extract; Staphylococcus aureus; antibacterial activity; antibacterial mechanism; virulence factor.

Sixteen chem. constituents of Paeonia suffruticosa Andr. buds extract (PSABE) were identified by UHPLC-PDA-Q/TOF-MS, belonging to phenolic acids, flavonoids, monoterpene glycosides and gallotannins. PSABE exhibited significant antibacterial activity against six tested microorganisms. Particularly, it showed the most efficient antibacterial effect against Staphylococcus aureus and Escherichia coli O157:H7, which the min. inhibition concentration (MIC) and min. bactericide concentration (MBC) both were 1.56 mg/mL and 6.25 mg/mL, resp. The results showed that PSABE induced obvious alterations in membrane fatty acid composition of S. aureus and E. coli O157:H7, such as the decrease of unsaturated fatty acids, leading to the reduce of membrane fluidity. Membrane integrity was destroyed and cell morphol. was obviously changed with PSABE. Furthermore, the transcription level of virulence factors was inhibited in the presence of PSABE. These results indicated that PSABE mainly exerted antibacterial effect by damaging cell membrane and inhibiting transcription level of virulence factors.

Natural Product Research published new progress about Antibacterial 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

Kokatla, Hari Prasad; Sil, Diptesh; Tanji, Hiromi; Ohto, Umeharu; Malladi, Subbalakshmi S.; Fox, Lauren M.; Shimizu, Toshiyoki; David, Sunil A. published the artcile< Structure-Based Design of Novel Human Toll-like Receptor 8 Agonists>, Quality Control of 112-63-0, the main research area is structure preparation toll like receptor 8 agonist immunomodulator adjuvant; pentyl quinoline amine preparation cytokine vaccine adjuvant; aminoquinolines; innate immunity; structure-based drug design; toll-like receptor-8 (TLR8); vaccine adjuvants.

Toll-like receptor (TLR)-8 agonists activate adaptive immune responses by inducing robust production of T helper 1-polarizing cytokines, suggesting that TLR8-active compounds might be promising candidate vaccine adjuvants. Recently, a C2-Bu furo[2,3-c]quinoline was reported with purely TLR8 agonistic activity. This compound was successfully co-crystallized with the human TLR8 ectodomain, and the co-crystal structure revealed ligand-induced reorganization of the binding pocket of TLR8. The loss of a key hydrogen bond between the oxygen atom of the furanyl ring of the agonist and Thr 574 in TLR8 suggested that the furan ring is dispensable. Employing a disconnection strategy, 3- and 4-substituted aminoquinolines were investigated. Focused structure-based ligand design studies led to the identification of 3-pentyl-quinoline-2-amine as a novel, structurally simple, and highly potent human TLR8-specific agonist (EC50=0.2 μ). Preliminary evaluation of this compound in ex vivo human blood assay systems revealed that it retains prominent cytokine-inducing activity. Together, these results indicate the suitability of this compound as a novel vaccine adjuvant, warranting further investigation.

ChemMedChem published new progress about Chemokines Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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