Category: esters-buliding-blocks

Guo, Wei; Yang, Xiao-Guang; Shi, Yu-Lin; Wang, Hong published the artcile< The effects and mechanism of paeoniflorin in promoting osteogenic differentiation of MC3T3-E1.>, SDS of cas: 112-63-0, the main research area is MC3T3-E1 cells; Osteoclastogenesis; Osteogenic differentiation; Paeoniflorin; Wnt/β-catenin pathways.

BACKGROUND: The incidence of osteoporosis and osteoporotic fractures is increasing every year. Traditional Chinese Medicine (TCM) can shed new light on the treatment of osteoporosis. This study aimed to explore the role and mechanism of paeoniflorin in promoting osteogenic differentiation of an osteoblast precursor cell line (MC3T3-E1). METHODS: MC3T3-E1 cells were cultured in osteogenic induction medium (OIM) and OIM combined with different concentrations of paeoniflorin. The optimal dose of paeoniflorin was assessed by a cell counting kit-8 (CCK-8) assay. Then, alkaline phosphatase (ALP) and Alizarin Red S (ARS) staining were performed to assess the osteogenic capacity of paeoniflorin. The transcription of osteogenic genes and the expression of osteogenic proteins were assessed by RT-PCR and Western blotting, respectively. The transcription of Wnt/β-catenin signaling pathway genes and proteins was assessed by RT-PCR and Western blotting, respectively. Finally, Dickkopf-1 (DKK-1), a Wnt/β-catenin signaling pathway inhibitor, was used to identify whether the Wnt/β-catenin signaling pathway was involved in the osteogenic differentiation of paeoniflorin. Osteoclastogenesis in RAW264.7 cells was identified by tartrate-resistant acid phosphatase (TRAP) staining. RESULTS: At concentrations ranging from 0.1 to 100 μM, paeoniflorin was not cytotoxic to MC3T3-E1 cells. Paeoniflorin significantly increased the osteogenic differentiation of MC3T3-E1 cells in a dose-dependent manner. Moreover, paeoniflorin significantly increased osteogenic differentiation gene and protein expression. Through bioinformatic analysis, paeoniflorin-affected genes were found to be involved in different signaling pathways, such as the Wnt/β-catenin signaling pathway. Paeoniflorin enhanced β-catenin and CyclinD1 expression compared with that of the control groups. DKK-1 partially reversed the promoting effects of paeoniflorin in promoting osteogenic differentiation of MC3T3-E1 cells. Moreover, paeoniflorin inhibited the osteoclastogenesis of RAW264.7 cells. CONCLUSION: Paeoniflorin promotes osteogenic differentiation in MC3T3-E1 cells by regulating the Wnt/β-catenin pathway. Paeoniflorin is a potential therapeutic agent for the treatment of osteoporosis.

Journal of orthopaedic surgery and research published new progress about 112-63-0. 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

Ul Lah, Hafiz; Mir, Shabir Ahmad; Hussain, Gulzar; Wani, Rafiq Ahmad; Yousuf, Syed Khalid published the artcile< Facile NBS/DMSO mediated dibromination of olefins including selected natural products and glycals>, SDS of cas: 4098-06-0, the main research area is alkene bromosuccinimide chemoselective diastereoselective dibromination; organodibromide preparation.

A highly chemo- and diastereoselective vic-dibromination of olefins was developed. The process employed a readily available N-Bromosuccinimide (NBS)/DMSO reagent system as a bromine source. High substrate scope, simple reaction conditions, application to natural products and glycals makes the process very attractive.

Journal of Chemical Sciences (Berlin, Germany) published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 4098-06-0 belongs to class esters-buliding-blocks, and the molecular formula is C12H16O7, SDS of cas: 4098-06-0.

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

Howarth, Nicola M.; Wakelin, Laurence P. G.; Walker, David M. published the artcile< α-cycloPNA: 1-Aminocyclopentane-1-carboxylic Acid-Derived Peptide Nucleic Acid>, Recommanded Product: (S)-Dimethyl 2-hydroxysuccinate, the main research area is aminocyclopentanecarboxylic peptide nucleic acid preparation conference; cyclopentanecarboxylic acid amino peptide nucleic acid preparation conference.

A conference report. All four diastereoisomers of 3-thymine-1-[(tert-butoxycarbonyl)amino]cyclopentane-1-carboxylic acid have been synthesized from (S)-di-Me malate and one of the thymine monomer diastereoisomers has been incorporated into an α-cycloPNA oligomer.

Nucleosides, Nucleotides & Nucleic Acids published new progress about Peptide nucleic acids Role: SPN (Synthetic Preparation), PREP (Preparation). 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Recommanded Product: (S)-Dimethyl 2-hydroxysuccinate.

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

Hyodo, Isao; Tobisu, Mamoru; Chatani, Naoto published the artcile< Catalytic Arylation of a C-H Bond in Pyridine and Related Six-Membered N-Heteroarenes Using Organozinc Reagents>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is nitrogen heteroarene diphenylzinc direct arylation nickel; aryl nitrogen heteroarene preparation; nickel direct arylation catalyst.

Despite significant advances in the catalytic direct arylation of heteroarenes, the application of this reaction to pyridines has been met with limited success. An oxidative nucleophilic arylation strategy has been developed to overcome this problem. Pyridine, pyrazine, quinolone, and related electron-deficient N-heteroarenes can be arylated at the most electrophilic site using the developed nickel-catalyzed reaction. This protocol serves as a complementary method to catalytic direct arylation reactions.

Chemistry – An Asian Journal published new progress about Arylation. 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

Chen, Jia-Shu; Clarke, Ross; Haddad, Alexander F.; Wang, Elaina J.; Lacroix, Michel; Sarkar, Indra Neil; Zand, Ramin; Chen, Elizabeth S.; Toms, Steven A. published the artcile< The effect of levetiracetam treatment on survival in patients with glioblastoma: a systematic review and meta-analysis>, HPLC of Formula: 112-63-0, the main research area is human glioblastoma levetiracetam treatment meta analysis; Anti-epileptic; Glioblastoma; Levetiracetam; Survival; Temozolomide.

Levetiracetam (LEV) is an anti-epileptic drug (AED) that sensitizes glioblastoma (GBM) to temozolomide (TMZ) chemotherapy by inhibiting O6-methylguanine-DNA methyltransferase (MGMT) expression. Adding LEV to the standard of care (SOC) for GBM may improve TMZ efficacy. This study aimed to pool the existing evidence in the literature to quantify LEV’s effect on GBM survival and characterize its safety profile to determine whether incorporating LEV into the SOC is warranted. A search of CINAHL, Embase, PubMed, and Web of Science from inception to May 2021 was performed to identify relevant articles. Hazard ratios (HR), median overall survival, and adverse events were pooled using random-effect models. Meta-regression, funnel plots, and the Newcastle-Ottawa Scale were utilized to identify sources of heterogeneity, bias, and statistical influence. From 20 included studies, 5804 GBM patients underwent meta-anal., of which 1923 (33%) were treated with LEV. Administration of LEV did not significantly improve survival in the entire patient population (HR 0.89, p = 0.094). Significant heterogeneity was observed during pooling of HRs (I2 = 75%, p < 0.01). Meta-regression determined that LEV treatment effect decreased with greater rates of MGMT methylation (RC = 0.03, p = 0.02) and increased with greater proportions of female patients (RC = - 0.05, p = 0.002). Concurrent LEV with the SOC for GBM did not increase odds of adverse events relative to other AEDs. Levetiracetam treatment may not be effective for all GBM patients. Instead, LEV may be better suited for treating specific mol. profiles of GBM. Further studies are necessary to identify optimal GBM candidates for LEV. Journal of Neuro-Oncology published new progress about Anticonvulsants. 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

Guo, Kedong; Zhang, Yingbo; Li, Libo; Zhang, Jingyan; Rong, Hua; Liu, Deshui; Wang, Junping; Jin, Ming; Luo, Nan; Zhang, Xiaojie published the artcile< Neuroprotective effect of paeoniflorin in the mouse model of Parkinson′s disease through α-synuclein/protein kinase C δ subtype signaling pathway>, Category: esters-buliding-blocks, the main research area is Parkinsons disease alpha synuclein protein kinase C paeoniflorin neuroprotective.

Paeoniflorin, an active component of Radix Paeoniae Alba, has a neuroprotective effect in Parkinson′s animal models. However, its mechanism of action remains to be determined In this study, we hypothesized that the neuroprotective effect of paeoniflorin occurs through the α-synuclein/protein kinase C δ subtype (PKC-δ) signaling pathway. We tested our hypothesis in the 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-induced mouse model of Parkinson′s disease. We evaluated the effects of paeoniflorin on the expression levels of signal components of the α-synuclein/PKC-δ pathway, cellular apoptosis and motor performance. Our results demonstrated that paeoniflorin restored the motor performance impairment caused by MPTP, inhibited apoptosis, and protected the ultrastructure of neurons. Paeoniflorin treatment also resulted in the dose-dependent upregulation of an antiapoptotic protein, B-cell lymphoma-2, at the mRNA and protein levels, similar to the effects of the pos. control, selegiline. In contrast, paeoniflorin treatment downregulated the expression of pro-apoptotic proteins BCL2-Associated X2, α-synuclein, and PKC-δ at the mRNA and protein levels, as well as the level of the activated form of nuclear factor kappa B (p-NF-κB p65). Thus, our results showed that paeoniflorin exerts its neuroprotective effect by regulating the α-synuclein/PKC-δ signaling pathway to reduce neuronal apoptosis.

NeuroReport published new progress about Antiapoptotic proteins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Gao, Feng; Wang, Tengfei; Gao, Meixiang; Zhang, Xia; Liu, Zhuqing; Zhao, Shi Jia; Lv, Zao Sheng; Xiao, Jiaqi published the artcile< Benzofuran-isatin-imine hybrids tethered via different length alkyl linkers: Design, synthesis and in vitro evaluation of anti-tubercular and anti-bacterial activities as well as cytotoxicity>, Product Details of C11H12O3, the main research area is benzofuran isatin imine preparation antitubercular antibacterial cytotoxicity; Anti-bacterial; Anti-tubercular; Benzofuran; Hybrid compounds; Imine; Isatin; Multi-drug resistant; Structure-activity relationship.

The design and synthesis of twenty-two novel benzofuran-isatin-imine hybrids I [R1 = H, F, OCH3; X = (CH2)n; Y = NOCH3, NOC2H5, NNHC(S)NH2, NOH; R3 = H, OCH3, F; n = 1, 2, 3, 4] tethered through propylene, butylene, pentylene and hexylene, and for the evaluation of their in vitro anti-tubercular and anti-bacterial activities as well as cytotoxicity were reported. All benzofuran-isatin-imine hybrids exhibited considerable in vitro anti-TB (MIC: <0.016-0.218 μg/mL and 0.062-14.15 μg/mL against drug-sensitive and MDR MTB, resp.) and anti-bacterial (MIC: 0.25-64 μg/mL and 0.06-16 μg/mL against Gram-pos. and Gram-neg. strains, resp.) activities. All of them also showed acceptable cytotoxicity towards VERO (CC50: 8-128 μg/mL). The most active hybrid I (R1 = H; X = CH2CH2; Y = NOCH3; R3 = OCH3) (MIC: <0.016, 0.062 and 0.16 μg/mL, resp.) was >4.8 and >48 folds more potent than the first line anti-TB agents RIF and INH against both drug-sensitive MTB H37Rv and MDR-TB isolates, resp. Moreover, hybrid I (R1 = H; X = CH2CH2; Y = NOCH3; R3 = OCH3) also demonstrated promising anti-bacterial activities with MIC values of ≤1 μg/mL against the majority of the tested Gram-neg. and Gram-pos. pathogens, which was comparable to vancomycin (MIC: 0.5-4 μg/mL) and CPFX (MIC: 0.125-8 μg/mL) against Gram-pos. bacteria, but slightly less potent than CPFX (MIC: ≤0.03-0.5 μg/mL) against Gram-neg. bacteria. The results indicated that benzofuran-isatin-imine hybrids could act as candidates for the development of anti-TB and anti-bacterial agents.

European Journal of Medicinal Chemistry published new progress about Aliphatic amines Role: RCT (Reactant), RACT (Reactant or Reagent). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Product Details of C11H12O3.

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

Cao, Xiyue; Xu, Hui; Li, Fosheng; Zou, Yijun; Ran, Yulu; Ma, Xiaorui; Cao, Yu; Xu, Qingrui; Qiao, Dairong; Cao, Yi published the artcile< One-step direct transesterification of wet yeast for biodiesel production catalyzed by magnetic nanoparticle-immobilized lipase>, Related Products of 112-63-0, the main research area is lipase wet yeast biodiesel magnetic nanoparticle transesterification.

To develop a method for direct transesterification of wet yeast using immobilized lipase, the oleaginous yeast Saitozyma podzolica Zwy-2-3 and the lipase producing Burkholderia pyrrolica WZ10-3 were used as materials for production of biodiesel. Fe3O4@SiO2-CHO prepared by modifying Fe3O4 with TEOS, APTES and glutaraldehyde. The biocatalysts covalently cross-linked with WZ10-3 lipase by Fe3O4@SiO2-CHO were characterized by FTIR, XRD and TEM. When the enzyme dosage, glutaraldehyde concentration, temperature and time were 30.22 mL, 2.0%, 40°C and 4 h, the immobilized lipase activity and immobilization rate reached 10038.0 U/g and 96.9%, resp. The optimum temperatures for immobilized and free lipase were 60 degrees and 40 degrees. The immobilized enzyme still had 80% enzymic activity after 48 d storage at 4°C. The optimized conditions for the direct conversion of immobilized lipase to esterified wet yeast (one-step) were: enzyme dosage 2.5 g, reaction temperature 35°C; water content 15%; and molar ratio of n-hexane to methanol 3: 1. The transesterification rates of one-step method for oil and biomass were 98.12% and 56.11%, resp. In contrast, the two-step method was only 88.75% and 51.21%. The immobilized enzyme had 90% enzyme activity after 10 times of reuse.

Renewable Energy published new progress about Biodiesel fuel. 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

Widmer, Ulrich published the artcile< A convenient benzylation procedure for β-hydroxy esters>, Formula: C6H10O5, the main research area is benzylation hydroxy ester; ether benzyl.

Benzylation of β-hydroxy esters, containing primary and secondary alc. functions, with benzyl 2,2,2-trichloroacetamidate (I) gives the corresponding benzyl ethers in good yield. In the case of chiral substrates non racemization is observed Treatment of Me(CH2)10CH(OH)CH2CO2Me with I in the presence of a catalytic amount of F3CSO3H gave 79% Me(CH2)10CH(OCH2Ph)CH2CO2Me. Among the 5 other compounds similarly prepared were MeO2CCH2CH(OCH2Ph)CO2Me and PhCH2OCH2CH(Me)CO2Me.

Synthesis published new progress about Benzylation. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Formula: C6H10O5.

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

Mayer, Nicole; Schweiger, Martina; Fuchs, Elisabeth; Migglautsch, Anna K.; Doler, Carina; Grabner, Gernot F.; Romauch, Matthias; Melcher, Michaela-Christina; Zechner, Rudolf; Zimmermann, Robert; Breinbauer, Rolf published the artcile< Structure-activity relationship studies for the development of inhibitors of murine adipose triglyceride lipase (ATGL)>, Application of C19H34O2, the main research area is PNPLA2 lipolysis NAFLD atglistatin murine ATGL inhibitors SAR; Atglistatin; Lipolysis; NAFLD; PNPLA2; Small molecule inhibitor.

High serum fatty acid (FA) levels are causally linked to the development of insulin resistance, which eventually progresses to type 2 diabetes and non-alc. fatty liver disease (NAFLD) generalized in the term metabolic syndrome. Adipose triglyceride lipase (ATGL) is the initial enzyme in the hydrolysis of intracellular triacylglycerol (TG) stores, liberating fatty acids that are released from adipocytes into the circulation. Hence, ATGL-specific inhibitors have the potential to lower circulating FA concentrations, and counteract the development of insulin resistance and NAFLD. In this article, we report about structure-activity relationship (SAR) studies of small mol. inhibitors of murine ATGL which led to the development of Atglistatin. Atglistatin is a specific inhibitor of murine ATGL, which has proven useful for the validation of ATGL as a potential drug target.

Bioorganic & Medicinal Chemistry published new progress about Drug targets. 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