Tag: M.W=250-300

Rose, P. E.; Benoit, W. R.; Adams, M. C. published the artcile< Tracer testing at Dixie Valley, Nevada, using pyrene tetrasulfonate, amino G, and fluorescein>, Application In Synthesis of 112-63-0, the main research area is tracer study geothermal reservoir fluid flow injection well Nevada.

A series of four tracer tests was recently conducted at the Dixie Valley, Nevada, geothermal reservoir in order to determine fluid-flow processes and to evaluate candidate tracers for use in hydrothermal systems. These tests have resulted in the first successful use of the compounds amino G and pyrene tetrasulfonate as tracers in a geothermal reservoir. The tracer candidates were first subjected to simulated hydrothermal conditions in laboratory reactors at temperatures as high as 300°C in order to determine their thermal stabilities. They were next injected as pulses into the target injection wells. Fluids from the surrounding production wells were then sampled and analyzed in order to determine injectate flow patterns. The tracer data indicate that injected fluids flow only to a cluster of production wells in the south-central portion of the field; no tracer was produced in the producers located in the northeast section of the reservoir. Tracer returns from fluids injected into one of the wells indicate a much shorter residence time and a more heterogeneous flow pattern than tracer fluids from the other three injectors.

Transactions – Geothermal Resources Council published new progress about Flow. 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

Singh, Sangeeta; Syme, Colin A.; Singh, Ashvani K.; Devor, Daniel C.; Bridges, Robert J. published the artcile< Benzimidazolone activators of chloride secretion: potential therapeutics for cystic fibrosis and chronic obstructive pulmonary disease>, Synthetic Route of 112-63-0, the main research area is chloride channel benzimidazolone preparation cystic fibrosis; structure activity benzimidazolone lung disease cystic fibrosis.

The diseases of cystic fibrosis (CF) and chronic obstructive pulmonary disease (COPD) are characterized by mucus-congested airways. Agents that stimulate the secretion of Cl- are anticipated to facilitate mucociliary clearance and thus be of benefit in the treatment of CF and COPD. Recently 1-EBIO (1-ethyl-2-benzimidazolinone or 1-ethyl-1,3-dihydro-2H-benzimidazol-2-one) was shown to stimulate chloride secretion albeit at relatively high concentrations (0.6-1 mM). The studies reported here were undertaken to develop a more potent benzimidazolone. Structure activity studies with 30 benzimidazolone derivatives revealed that Et and hydrogen groups at the 1 and 3 nitrogen positions, resp., were critical for the activation of hIK1 K+ channels and that other alkyl groups were not tolerated at these positions without some loss in potency. Substitutions at the 5 and 6 positions improved the potency of 1-EBIO. Compared with 1-EBIO, the most potent of these derivatives, DCEBIO (5,6-dichloro-1-ethyl-1,3-dihydro-2H-benzimidazol-2-one) was severalfold better in a 86Rb+ uptake assay, 20-fold better in short circuit current measurements on T84 monolayers, and 100-fold better in patch-clamp assays of hIK1 activity. Short circuit current studies revealed DCEBIO stimulates Cl- secretion via the activation of hIK1 K+ channels and the activation of an apical membrane Cl- conductance. The improved potency of DCEBIO strengthens the possibility that compounds in this class may be of therapeutic benefit in the treatment of CF and COPD.

Journal of Pharmacology and Experimental Therapeutics published new progress about Chloride channel openers. 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

Bao, Jiyin; Liu, Haichun; Zhi, Yanle; Yang, Wenqianzi; Zhang, Jiawei; Lu, Tao; Wang, Yue; Lu, Shuai published the artcile< Discovery of benzo[d]oxazole derivatives as the potent type-I FLT3-ITD inhibitors>, Application of C19H34O2, the main research area is phenylamino benzooxazole preparation antitumor activity tyrosine kinase inhibitor SAR; AML; Benzo[d]oxazole; FLT3 inhibitor.

A series of compounds I [R1 = H, Me, F, MeO; R2 = diethylamino, piperidinyl, piperazin-1-yl, etc.; R3 = Ph, pyridin-3-yl, pyridin-4-yl, etc.] were designed and synthesized based on benzo[d]oxazole-2-amine scaffold to discover new potent Fms-like tyrosine kinase 3 inhibitors. During the medicinal chem. works, flexible mol. docking was used to provide design rationale and study the binding modes of the target compounds Through the mixed SAR exploration based on the enzymic and cellular activities, compound I [R1 = MeO; R2 = piperazin-1-yl; R3 = 3-carbamoylphenyl] was identified with potent FLT3-ITD inhibitory (IC50: 0.41 nM) and anti-proliferative (IC50: 0.037μM against MV4-11 cells) activities. And the binding mode of I [R1 = MeO; R2 = piperazin-1-yl; R3 = 3-carbamoylphenyl] with ”DFG-in” FLT3 was simulated by a 20-ns mol. dynamics run, providing some insights into further medicinal chem. efforts toward novel FLT3 inhibitors in AML therapy.

Bioorganic Chemistry published new progress about Acute myeloid leukemia. 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

Bickerton, Laura E.; Langton, Matthew J. published the artcile< Controlling transmembrane ion transport via photo-regulated carrier mobility>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is transmembrane ion transport photo regulated carrier.

Stimuli-responsive transmembrane ion carriers allow for targeted and controllable transport activity, with potential applications as therapeutics for channelopathies and cancer, and in fundamental studies into ion transport phenomena. These applications require OFF-ON activation from a fully inactive state which does not exhibit background activity, but this remains challenging to achieve with synthetic transport systems. Here we introduce a novel mechanism for photo-gating mobile ion carriers, which involves modulating the mobility of the carriers within the lipid bilayer membrane. By appending a membrane-targeting anchor to the carrier using a photo-cleavable linker, the carriers ion transport activity is fully switched off by suppressing its ability to shuttle between the two aqueous-membrane interfaces of the bilayer. The system can be reactivated rapidly in situ within the membrane by photo-triggered cleavage of the anchor to release the mobile ion carrier. This approach does not involve direct functionalization of the ion binding site of the carrier, and so does not require the de novo design of novel ion binding motifs to implement the photo-caging of activity. This work demonstrates that controlling the mobility of artificial transport systems enables precise control over activity, opening up new avenues for spatio-temporally targeted ionophores.

Chemical Science published new progress about Affinity (Binding). 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

Otevrel, Jan; Svestka, David; Bobal, Pavel published the artcile< Bianthryl-based organocatalysts for the asymmetric Henry reaction of fluoroketones>, COA of Formula: C19H34O2, the main research area is alc preparation enantioselective; fluoroketone nitroalkane Henry reaction bianthryl catalyst; bianthryl organocatalyst preparation.

A catalytic system based on bianthrylbis(thiourea), e.g., I for the asym. Henry reaction of fluoroketones R1C(O)C(F2)R2 (R1 = Ph, thiophen-2-yl, 3-nitrophenyl, etc.; R2 = H, F) and nitroalkanes R3CH2NO2 (R3 = H, Me) that resulted from the screening of a library containing 31 chiral non-racemic organocatalysts has been developed. The corresponding adducts R1C(OH)(C(F2)R2)CH(NO2)R3 were isolated in up to 6 times shorter reaction time in comparison with the previously published organocatalysts. High levels of stereocontrol have been generally observed, with measured product enantiomeric excesses up to 97% and diastereomeric ratio 3 : 2 (anti/syn). The above-mentioned catalysts have been successfully applied to the total asym. synthesis of CF3-tethered (S)-halostachine, which has proved that this method constitutes an easy entry to similar enantiopure compounds

Organic & Biomolecular Chemistry published new progress about Enantioselective synthesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

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

Cai, Qian; Li, Zhengqiu; Wei, Jiajia; Ha, Chengyong; Pei, Duanqing; Ding, Ke published the artcile< Assembly of indole-2-carboxylic acid esters through a ligand-free copper-catalyzed cascade process>, Computed Properties of 112-63-0, the main research area is indole carboxylic ester preparation; copper catalyzed condensation coupling deformylation halo aldehyde ketone isocyanoacetate.

A straightforward synthesis of indole-2-carboxylic esters was developed through a ligand-free copper-catalyzed condensation/coupling/deformylation cascade process from 2-halo aryl aldehydes or ketones with Et isocyanoacetate. The reactions proceeded well for most of the 2-iodo-, bromo-, and chloro-substrates under room temperature or mild conditions.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent) (halo). 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

Lee, Suji; Sung, Dan-Bi; Kang, Seungyoon; Parameswaran, Saravanan; Choi, Jun-Ho; Lee, Jong Seok; Han, Min Su published the artcile< Development of human serum albumin selective fluorescent probe using thieno[3,2-b]pyridine-5(4H)-one fluorophore derivatives>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is human serum albumin thienopyridine one fluorophore fluorescent probe; fluorescent probe; human serum albumin; intramolecular charge transfer; microalbuminuria; thieno[3,2-b]pyridine-5(4H)-one.

The level of human serum albumin (HSA) in biol. fluids is a key health indicator and its quant. determination has great clin. importance. In this study, we developed a selective and sensitive fluorescent HSA probe by fluorescence-based high-throughput screening of a set of fluorescent thieno[3,2-b]pyridine-5(4H)-one derivatives against major plasma proteins: HSA, bovine serum albumin (BSA), globulin, fibrinogen, and transferrin. The fluorophore chosen finally (4) showed noticeable fluorescence enhancement in the presence of HSA (160-fold increase), and it exhibited rapid response, high sensitivity (detection limit 8 nM), and the ability to clearly distinguish HSA from BSA in pH 9 buffer condition. Moreover, the probe could be applicable to detect trace amounts of HSA in an artificial urine sample; further, it might be applied to the determination of the HSA concentration in complex biol. samples for pre-clin. diagnosis.

Sensors published new progress about Blood plasma. 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

Hao, Lin; Chen, Shaojin; Xu, Jianfeng; Tiwari, Bhoopendra; Fu, Zhenqian; Li, Tong; Lim, Jieyan; Chi, Yonggui Robin published the artcile< Organocatalytic Activation of Alkylacetic Esters as Enolate Precursors to React with α,β-Unsaturated Imines>, HPLC of Formula: 112-63-0, the main research area is enantioselective organocatalytic NHC catalyzed cycloaddition unsaturated imine alkanoate enolate.

Asym. functionalization of alkylacetic esters and their derivatives is traditionally achieved via preformed enolates with chiral auxiliaries. Catalytic versions of such transformations are attractive but challenging. A direct catalytic activation of simple alkylacetic esters via N-heterocyclic carbene organocatalysts to generate chiral enolate intermediates for highly enantioselective reactions is reported. E.g., chiral NHC-catalyzed cycloaddition of PhCH:CHC(:NTs)Ph with 4-nitrophenyl butanoate in presence of DBU afforded trans-lactam I as the major diastereomer in 99% ee.

Organic Letters published new progress about Carboxylic esters Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 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

Yamamoto, Shuhei; Yoshikawa, Yutaka; Ueda, Eriko; Yamashita, Tetushi; Kajiwara, Naemi; Sakurai, Hiromu; Kojima, Yoshitane published the artcile< Insulinomimetic activity of zinc (II) complexes with halogenated picolinic acids>, Synthetic Route of 112-63-0, the main research area is antidiabetic zinc complex halogenated picolinic acid.

We prepared six new zinc(II) complexes of halogenated picolinic acids with a Zn(N2O2) coordination mode and evaluated for their insulinomimetic activities by in vitro study. By introducing an electron withdrawing halogen groups into the picolinic acid, we prepared bis(4- or 6-chloro picolinato), bis(4-, 5- or 6-iodo picolinato), and bis(6-bromo picolinato)/zinc(II) complexes (Zn(4cpa)2, Zn(6cpa)2, Zn(4ipa)2, Zn(5ipa)2, Zn(6ipa)2, and Zn(6bpa)2, resp.). By in vitro evaluation of the inhibition of free fatty acid (FFA) release from isolated rat adipocytes in the presence of epinephrine, the insulinomimetic activities of Zn(4cpa)2, Zn(6cpa)2, Zn(4ipa)2, Zn(6ipa)2, and Zn(6bpa)2 (IC50 = 0.64, 0.60, 0.77, 0.85, and 0.50 mM, resp.) were higher than that of bis(picolinato)/zinc(II) complex (Zn(pic)2) (IC50 = 1.00 mM) in terms of IC50 value, the 50% inhibition concentrations for the FFA release from rat adipocytes.

Biomedical Research on Trace Elements published new progress about Antidiabetic agents. 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

Agnihotri, Harsha; Paramasivam, Mahalingavelar; Palakollu, Veerabhadraiah; Kanvah, Sriram published the artcile< Photoisomerization of Trans Ortho-, Meta-, Para-Nitro Diarylbutadienes: A Case of Regioselectivity>, Electric Literature of 112-63-0, the main research area is nitro diarylbutadiene preparation regioselective photoisomerization fluoroscence crystal structure.

A series of ortho-, meta- and para-substituted trans-nitro aryl (Ph and pyridyl) butadienes have been synthesized and characterized. The effect of substitution and positional selectivity on their fluorescence and photoisomerization were systematically investigated. Among all dienes, meta- and para-nitro phenyl-substituted derivatives exhibit remarkable solvatochromic emission shifts due to intramol. charge transfer. On the other hand, ortho derivatives undergo regioselective isomerization upon photoexcitation in contrast to inefficient isomerization of para and meta nitro-substituted dienes. Single crystal X-ray anal. revealed existence of intramol. hydrogen bonding between the nitro group and the hydrogen of the proximal double bond. This restricts the rotation of the proximal double bond thereby allowing regioselective isomerization. The observations were also supported by NMR spectroscopic studies.

Photochemistry and Photobiology published new progress about Alkadienes Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), PROC (Process), RACT (Reactant or Reagent), PREP (Preparation). 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