Month: October 2022

Al-Toubah, Taymeyah; Morse, Brian; Strosberg, Jonathan published the artcile< Efficacy of Capecitabine and Temozolomide in Small Bowel (Midgut) Neuroendocrine Tumors.>, Reference of 112-63-0, the main research area is capecitabine; captem; carcinoid; midgut; neuroendocrine tumors; small bowel; temozolomide.

The capecitabine/temozolomide regimen has significant activity in pancreatic NETs; however, data are limited in NETs of the small bowel (midgut). A retrospective study of all patients with metastatic midgut NETs seen at Moffitt Cancer Center between January 2008 and June 2019 treated with CAPTEM was conducted. 32 patients with proven or suspected well-differentiated primary small bowel NETs (excluding duodenum) were identified. 6 patients were found to have a radiographic response (19%), 5 of whom had high-grade disease. Only one patient among 23 with low/intermediate-grade disease responded (4%), whereas the response rate for patients with high-grade disease was 56%. Among patients with low/intermediate-grade disease, 44% discontinued due to poor tolerability. The CAPTEM regimen appears to have an activity in patients with high-grade small bowel NETs and is largely inactive in patients with low/intermediate-grade tumors.

Current oncology (Toronto, Ont.) published new progress about 112-63-0. 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

Hou, Zhanyao; Nau, Werner M.; Hoogenboom, Richard published the artcile< Reversible covalent locking of a supramolecular hydrogel via UV-controlled anthracene dimerization>, Recommanded Product: Perfluorophenyl acrylate, the main research area is supramol hydrogel UV irradiation anthracene dimerization.

Supramol. hydrogels gained significant attention as shear-thinning, self-healing materials. However, the introduction of non-covalent crosslinks inherently decreases the strength and stability of the hydrogel. In this work, we developed a novel supramol. hydrogel that undergoes a reversible transformation to the corresponding covalently crosslinked hydrogel upon UV-irradiation The supramol. hydrogel was developed based on the ternary host-guest interaction of two anthracene moieties and one large macrocyclic host. Anthracene functionalized poly(N-acryloylmorpholine)s were synthesized by post-polymerization modification of a copolymer consisting of N-acryloylmorpholine and an activated ester comonomer, whereby two different polymers were prepared having either neutral anthracene side-chains or carrying a pos. charge next to the anthracene to enhance the interaction with the host. The binding affinity of the anthracene side chains with and without an addnl. cationic charge were studied with two macrocyclic hosts, namely cucurbit[8]uril and γ-cyclodextrin (γ-CD) by UV-Vis titration revealing a markedly stronger binding in the presence of the cationic charge due to addnl. ion-dipole one of the macrocyclic hosts, cucurbit[8]uril. Subsequently, the effect of the binding affinity on the hydrogelation was investigated, indicating that the stronger binding affinity facilitated the hydrogel formation at lower concentration Finally, the reversible transformation of the supramol. hydrogel to a chem. hydrogel by anthracene dimerization was studied by the UV irradiation of the hydrogel at 365 nm for covalent crosslinking or at 254 nm for decrosslinking. It could be demonstrated that the dynamic nature of the hydrogel, that is responsible for the shear-thinning behavior, was indeed lost upon UV-irradiation indicative of the formation of a covalently crosslinked hydrogel. The capabilities of the formed supramol. hydrogel that is easily processable and able to reversibly convert to a chem. hydrogel, provides potential applications in applying mech. robust covalently crosslinked hydrogels in complex shapes and difficult to reach locations making use of the dynamic nature of the supramol. crosslinks.

Polymer Chemistry published new progress about Hydrogels. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Recommanded Product: Perfluorophenyl acrylate.

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

Luo, Kui; Liu, Aiqun; Wu, Hao; Liu, Qiang; Dai, Jin; Liu, Yu; Wang, Zhifei published the artcile< CircKIF4A promotes glioma growth and temozolomide resistance by accelerating glycolysis>, Application In Synthesis of 112-63-0, the main research area is .

Abstract: Circular RNAs (circRNAs) are a kind of noncoding RNAs that have different biol. functions. CircRNAs play very important parts in the progression of cancers. Nevertheless, the exact mechanism and function of many circRNAs in glioma are not clear. In our study, circKIF4A was identified as a remarkably upregulated circRNA expressed in glioma tissues and cell lines. We performed loss-off function and gain-of-function experiments to inquire into the biol. function of circKIF4A in the progression of glioma. We discovered that knockdown of circKIF4A remarkably decreased the proliferation and invasion ability of glioma cells. Moreover, s.c. tumorigenesis model and intracranial injection of orthotopic glioma model were established to investigate the functions of circKIF4A in vivo. Suppression of circKIF4A remarkably enhanced the sensitivity of glioma to temozolomide treatment. The glycolysis rate was accelerated by circKIF4A overexpression, which promoted glioma growth and temozolomide resistance. The glycolysis regulating enzyme ALDOA was regulated by circKIF4A through the mechanism of interactivity with miR-335-5p in glioma cells. In a word, our data showed that the upregulation of circKIF4A facilitates glioma progression by means of binding miR-335-5p and upregulating ALDOA expression.

Cell Death & Disease published new progress about 112-63-0. 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

Trentin, Riccardo; Custodio, Luisa; Rodrigues, Maria Joao; Moschin, Emanuela; Sciuto, Katia; da Silva, Jose Paulo; Moro, Isabella published the artcile< Total Phenolic Levels, In Vitro Antioxidant Properties, and Fatty Acid Profile of Two Microalgae, Tetraselmis marina Strain IMA043 and Naviculoid Diatom Strain IMA053, Isolated from the North Adriatic Sea>, HPLC of Formula: 112-63-0, the main research area is Tetraselmis marina Naviculoid Diatom fatty acid phenol antioxidant property; biodiesel; microalgal biotechnology; natural antioxidants.

This work studied the potential biotechnol. applications of a naviculoid diatom (IMA053) and a green microalga (Tetraselmis marina IMA043) isolated from the North Adriatic Sea. Water, methanol, and dichloromethane (DCM) extracts were prepared from microalgae biomass and evaluated for total phenolic content (TPC) and in vitro antioxidant properties. Biomass was profiled for fatty acid Me esters (FAME) composition The DCM extracts had the highest levels of total phenolics, with values of 40.58 and 86.14 mg GAE/g dry weight (DW in IMA053 and IMA043, resp.). The DCM extracts had a higher radical scavenging activity (RSA) than the water and methanol ones, especially those from IMA043, with RSAs of 99.65% toward 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)diammonium salt (ABTS) at 10 mg/mL, and of 103.43% against 2,2-diphenyl-1-picrylhydrazyl (DPPH) at 5 mg/mL. The DCM extract of IMA053 displayed relevant copper chelating properties (67.48% at 10 mg/mL), while the highest iron chelating activity was observed in the water extract of the same species (92.05% at 10 mg/mL). Both strains presented a high proportion of saturated (SFA) and monounsaturated (MUFA) fatty acids. The results suggested that these microalgae could be further explored as sources of natural antioxidants for the pharmaceutical and food industry and as feedstock for biofuel production

Marine Drugs published new progress about Antioxidants. 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

Wang, Jian; Xie, Hexin; Li, Hao; Zu, Liansuo; Wang, Wei published the artcile< A highly stereoselective hydrogen-bond-mediated Michael-Michael cascade process through dynamic kinetic resolution>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is thiochroman preparation mercaptocinnamate nitroalkene cinchona thiourea catalyst.

The title reaction, which is efficiently catalyzed by a cinchona alkaloid thiourea affords direct access to thiochromanes in high efficiency. The reaction features a new activation mode of organocatalytic dynamic kinetic resolution involving a Michael-retro-Michael-Michael-Michael cascade.

Angewandte Chemie, International Edition published new progress about Alkenes, nitro Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Chun, Jaemoo; Lee, So Min; Ahn, You Mee; Baek, Min-Gyung; Yi, Hana; Shin, Sarah; Jung, Jeeyoun published the artcile< Modulation of the gut microbiota by Sihocheonggan-Tang shapes the immune responses of atopic dermatitis>, Electric Literature of 112-63-0, the main research area is TNFalpha IFNgamma sihocheonggan tang gut microbiota atopic dermatitis; Sihocheonggan-Tang; atopic dermatitis; gut microbiome; immune response; short-chain fatty acids.

Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by complex immune dysregulation and closely related to the gut microbiome. The present study investigated the microbiome-mediated effect of Sihocheonggan-Tang (SHCGT) on AD-like symptoms induced by 2,4-dinitrochlorobenzene (DNCB) in BALB/c mice. DNCB was applied regularly to the ear and dorsal skin of BALB/c mice, and SHCGT was administered orally daily for 2 wk. The composition of the gut microbiota was analyzed using 16S rRNA sequencing, and the effect of gut microbiome-derived metabolites, specifically short-chain fatty acids (SCFAs), was evaluated in tumor necrosis factor-alpha (TNF-α)- and interferon-gamma (IFN-γ)-treated HaCaT cells. SHCGT alleviated DNCB-induced symptoms of AD and the immune response to AD by decreasing the plasma IgE level and splenic interleukin-4, interleukin-10, TNF-α, and IFN-γ levels. The gut microbiome composition and the damaged gut epithelial barrier in mice with AD were also significantly altered by SHCGT, and the reduced SCFA levels therein were elevated. We found that SFCAs directly inhibited the mRNA expression of IL-6 and ICAM-1 in TNF-α- and INF-γ-treated HaCaT cells. The finding that SHCGT regulates the gut microbiome and improves DNCB-induced AD in mice suggests that this herbal medicine has therapeutic potential in patients with AD.

Frontiers in Pharmacology published new progress about Atopic dermatitis. 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

Kumar, B. V. V. S. Pavan; Salikolimi, Krishnachary; Eswaramoorthy, M. published the artcile< Glucose- and pH-Responsive Charge-Reversal Surfaces>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is glucose pH responsive charge reversal silica surface desorption chromophore.

We have shown a pH- and glucose-responsive charge reversal on silica surface through heterogeneous functionalization utilizing amines and boronic acid moieties. The dual responsiveness of the charge reversal has been unambiguously demonstrated through the desorption of charged chromophores. Interestingly, we observed a concentration-dependent desorption response to glucose at physiol. relevant levels.

Langmuir published new progress about Amines Role: RGT (Reagent), RACT (Reactant or Reagent). 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

Zhang, Xiaojie; Wang, Rubing; Perez, German Ruiz; Chen, Guanglin; Zhang, Qiang; Zheng, Shilong; Wang, Guangdi; Chen, Qiao-Hong published the artcile< Design, synthesis, and biological evaluation of 1,9-diheteroarylnona-1,3,6,8-tetraen-5-ones as a new class of anti-prostate cancer agents>, Product Details of C19H34O2, the main research area is diheteroarylnonatetraenone antitumor prostate cancer; Cell apoptosis; Cell cycle regulation; Cell proliferation; Curcumin; Heteroaromatic ring; Prostate cancer.

In search of more effective chemotherapeutics for the treatment of castration-resistant prostate cancer and inspired by curcumin analogs, twenty five (1E,3E,6E,8E)-1,9-diarylnona-1,3,6,8-tetraen-5-ones bearing two identical terminal heteroaromatic rings have been successfully synthesized through Wittig reaction followed by Horner-Wadsworth-Emmons reaction. Twenty-three of them are new compounds The WST-1 cell proliferation assay was employed to assess their antiproliferative effects toward both androgen-sensitive and androgen-insensitive human prostate cancer cell lines. Eighteen out of twenty-five synthesized compounds possess significantly improved potency as compared with curcumin. The optimal compound, I, is 14- to 23-fold more potent than curcumin in inhibiting prostate cancer cell proliferation. It can be concluded from the data that 1,9-diarylnona-1,3,6,8-tetraen-5-one can serve as a new potential scaffold for the development of antiprostate cancer agents and that pyridine-4-yls and quinolin-4-yl act as optimal heteroaromatic rings for the enhanced potency of this scaffold. Two of the most potent compounds, II and III, effectively suppress PC-3 cell proliferation by activating cell apoptosis and by arresting cell cycle in the G0/G1 phase.

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

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

Van de Poel, Herve; Guillaumet, Gerald; Viaud-Massuard, Marie-Claude published the artcile< Synthesis of 6,7,8,9-tetrahydropyrido[2,3-b]indolizine and 3,4-dihydro-2H-pyrido[2',3':4,5]pyrrolo[2,1-b][1,3]oxazine derivatives as new melatonin receptor ligands>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is tricyclic azaindolic hormone melatonin hydropyridoindolizine hydropyridopyrrolooxazine synthesis; melatonin receptor ligand tetrahydropyridoindolizine dihydropyridopyrrolooxazine synthesis; bromopropyloxopyrrolopyridine intramol homolytic cyclization hydropyridoindolizine hydropyridopyrrolooxazine synthesis; hydropyridoindolizine hydropyridopyrrolooxazine synthesis melatonin receptor ligand intramol homolytic cyclization.

The synthesis of new tricyclic azaindolic analogs of the hormone melatonin is described. Treatment of 1-(4-bromobutyl)pyrrolo[3,2-b]pyridine derivative with tributyltin hydride and AIBN results in radical cyclisation to give the 6,7,8,9-tetrahydropyrido[2,3-b]indolizine ring system. A new synthetic approach of pyridopyrrolo[2,1-b][1,3]oxazine moiety is shown to be accomplished readily from 1-(3-bromopropyl)-2-oxopyrrolopyridine derivative with sodium hydride in N,N-dimethylformamide.

Tetrahedron Letters published new progress about Radical cyclization. 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

Koerts, Janneke; Velraeds, Martine M. C.; Soffers, Ans E. M. F.; Vervoort, Jacques; Rietjens, Ivonne M. C. M. published the artcile< Influence of Substituents in Fluorobenzene Derivatives on the Cytochrome P450-Catalyzed Hydroxylation at the Adjacent Ortho Aromatic Carbon Center>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is fluorobenzene derivative cytochrome P 450 hydroxylation.

In a previous study, the in vivo cytochrome P 450-catalyzed regioselectivity of aromatic ring hydroxylation for a series of (poly)fluorobenzenes could be quant. predicted by the calculated frontier orbital d. distribution in the aromatic ring (1993). However, the relative small fluorine, its size almost comparable to a hydrogen, is not expected to influence the regioselectivity of aromatic hydroxylation due to steric hindrance. The aim of the present study was to investigate the influence of substituents larger than a hydrogen or fluorine on the possibilities for hydroxylation at the adjacent carbon center. First, the in vivo regioselectivity of aromatic ring hydroxylation of a series of C4-substituted fluorobenzenes was investigated. The results obtained demonstrate that a chlorine and cyano C4 substituent do not hamper hydroxylation at the positions ortho to the C4 carbon atom. For 4-chloro- and 4-cyanofluorobenzene, the observed regioselectivity of aromatic hydroxylation correlated with the regioselectivity predicted on the basis of the frontier orbital d. distribution. In contrast, a bromine and iodine substituent affected the hydroxylation at the adjacent ortho carbon centers, reducing it to resp. 40 and 6% of the calculated intrinsic reactivity of the carbon centers. Addnl. experiments were performed to investigate whether the regioselectivity of the aromatic hydroxylation of the C4-substituted fluorobenzene model compounds was influenced by changes in the cytochrome P 450 enzyme pattern. Results obtained demonstrate that for these relatively small substrates the regioselectivity of their hydroxylation was not significantly influenced by several cytochrome P 450 inducers. This suggests that the active sites of the cytochromes P 450 catalyzing the aromatic hydroxylation do not impose a stereoselective orientation of the aromatic rings with respect to the iron-oxo porphyrin reaction center. Thus, the working hypothesis for addnl. experiments was that the deviations for the regioselectivity of aromatic hydroxylation observed for 4-bromo- and 4-iodofluorobenzene may be ascribed to steric hindrance by the bromine and iodine substituents hampering the attack of the cytochrome P 450 iron-oxo species on the adjacent carbon centers in the benzene derivative This working hypothesis was further tested by investigating whether useful steric correction factors could be derived from the results obtained with the series C4-substituted fluorobenzenes. These correction factors should make it possible to correct calculated relative reactivities of carbon sites for steric hindrance by substituents positioned ortho with respect to the carbon to be hydroxylated. This will make it possible to better explain and predict the regioselectivities for other chlorine-, bromine-, iodine-, and cyano-containing fluorobenzenes. The in vivo regioselectivity of aromatic ring hydroxylation of a series of five chlorine-, bromine-, iodine-, or cyano-containing fluorobenzenes did not correlate with the noncorrected calculated reactivities (r = 0.49). However, upon correction of the calculated reactivity values by using the steric correction factors, a correlation between the observed and calculated regioselectivity for the substrates of the present study was obtained (r = 0.91). Together these results strongly indicate that for the fluorobenzenes studied the main factors directing the regioselectivity of their aromatic hydroxylation are (i) the nucleophilic chem. reactivity of the site to be hydroxylated and (ii) the steric influence of the substituent ortho with respect to the site of hydroxylation. This latter effect appears to be negligible for a fluorine, chlorine, and cyano substituent but significant for a bromine and iodine substituent.

Chemical Research in Toxicology published new progress about Frontier molecular orbital. 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