Category: esters-buliding-blocks

Ge, Yang; Yang, Haijun; Wang, Changyuan; Meng, Qiang; Li, Lei; Sun, Huijun; Zhen, Yuhong; Liu, Kexin; Li, Yanxia; Ma, Xiaodong published the artcile< Design and synthesis of phosphoryl-substituted diphenylpyrimidines (Pho-DPPYs) as potent Bruton's tyrosine kinase (BTK) inhibitors: Targeted treatment of B lymphoblastic leukemia cell lines>, Quality Control of 112-63-0, the main research area is preparation phosphoryl derivative diphenylpyrimidine Bruton’s kinase inhibitor leukemia; BTK; DPPY; Inhibitor; Leukemia; Phosphoryl.

A family of phosphoryl-substituted diphenylpyrimidine derivatives (Pho-DPPYs) were synthesized and biol. evaluated as potent BTK inhibitors in this study. Compound 7b was found to markedly inhibit BTK activity at concentrations of 0.82 nmol/L, as well as to suppress the proliferations of B-cell leukemia cell lines (Ramos and Raji) expressing high levels of BTK at concentrations of 3.17 μM and 6.69 μM. Moreover, flow cytometry anal. results further indicated that 7b promoted cell apoptosis to a substantial degree. In a word, compound 7b is a promising BTK inhibitor for the treatment of B-cell lymphoblastic leukemia.

Bioorganic & Medicinal Chemistry published new progress about Antitumor agents. 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

Huertas, Raul; William Allwood, J.; Hancock, Robert D.; Stewart, Derek published the artcile< Iron and zinc bioavailability in common bean (Phaseolus vulgaris) is dependent on chemical composition and cooking method>, Application of C19H34O2, the main research area is Phaseolus genotyoe iron zinc bioavailability cooking biofortification; Bioavailability; Common bean; Domestic processing; In vitro digestion; Iron; Phaseolus vulgaris; Zinc.

The influence of genotype and domestic processing on iron and zinc bioavailability in common bean germplasm was investigated using an in vitro digestion model. Raw beans exhibited diversity in iron content (50 to >90 mg kg-1) although zinc content was similar (30-40 mg kg-1). Following preparation by different household cooking methods < 5% of the iron in raw beans was recovered in the bioavailable fraction following in vitro digestion. However, up to 20% of zinc present in dry seeds was bioavailable. A high proportion of iron and zinc in raw beans (up to 40%) was lost by leaching into cooking water when beans were prepared by boiling. Although untargeted LC/MS revealed genotype-dependent differences in grain chem., correlations between mineral bioavailability and antinutritional phytates and polyphenols were mostly insignificant. Our data highlight the need to consider losses during domestic processing and the related physicochem. traits in biofortification programs. Food Chemistry published new progress about Aldaric acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Nurhayati; Saputra, L.; Awaluddin, A.; Kurniawan, E. published the artcile< Converting waste cooking oil to biodiesel catalyzed by NaOH-impregnated CaO derived from cockle shell (Anadara granosa)>, Quality Control of 112-63-0, the main research area is sodium hydroxide calcium oxide biodeisel waste cooking oil transesterification.

Herein, we developed an efficient and easily separable Na/CaO catalyst derived from cockle shell (Anadara granosa) for biodiesel production from waste cooking oil. Impregnation with 3 wt % of NaOH could enhance the sp. surface area and catalytic performance (>89% biodiesel yield). The effects of calcination temperature, reaction time, and stirring speed were also carefully studied. The quality of biodiesel obtained using this method mainly fulfills the requirements for biodiesel standard (ASTM D 6751).

Kinetics and Catalysis published new progress about Adsorption. 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

Enders, Dieter; Henseler, Alexander published the artcile< A Direct Intermolecular Cross-Benzoin Type Reaction: N-Heterocyclic Carbene-Catalyzed Coupling of Aromatic Aldehydes with Trifluoromethyl Ketones>, Reference of 112-63-0, the main research area is aldehyde aromatic coupling ketone trifluoromethyl benzoin heterocyclic carbene coupling.

A direct intermol. cross-benzoin-type condensation catalyzed by an N-heterocyclic carbene has been developed. The cross-coupling of com. available aromatic aldehydes R1CHO (R1 = Ph, 4-ClC6H4, 4-MeC6H4, etc.) and trifluoromethyl ketones R2COCF3 (R2 = Ph, 4-ClC6H4, 4-FC6H4) gave α-hydroxy-α-trifluoromethyl ketones R1C(O)C(OH)(CF3)R2 bearing a quaternary stereocenter with excellent chemoselectivity and good to excellent yields.

Advanced Synthesis & Catalysis published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Pastore, Carlo; D’Ambrosio, Valeria published the artcile< Intensification of processes for the production of ethyl levulinate using AlCl3·6H2O>, Category: esters-buliding-blocks, the main research area is aluminum chloride catalyst ethyl levulinate esterification thermodn property.

A process for obtaining Et levulinate through the direct esterification of levulinic acid and ethanol using AlCl3·6H2O as a catalyst was investigated. AlCl3·6H2O was very active in promoting the reaction and, the correspondent kinetic and thermodn. data were determined The reaction followed a homogeneous second-order reversible reaction model: in the temperature range of 318-348 K, Ea was 56.3 kJ·K-1·mol-1, whereas Keq was in the field 2.37-3.31. The activity of AlCl3·6H2O was comparable to that of conventional mineral acids. Besides, AlCl3·6H2O also induced a separation of phases in which Et levulinate resulted mainly (>98 wt%) dissolved into the organic upper layer, well separated by most of the co-formed water, which decanted in the bottom. The catalyst resulted wholly dissolved into the aqueous phase (>95 wt%), allowing at the end of a reaction cycle, complete recovery, and possible reuse for several runs. With the increase of the AlCl3·6H2O content (from 1 to 5 mol%), the reaction proceeded fast, and the phases’ separation improved. Such a behavior eventually results in an intensification of processes of reaction and separation of products and catalyst in a single step. The use of AlCl3·6H2O leads to a significant reduction of energy consumed for the final achievement of Et levulinate, and a simplification of line-processes can be achieved.

Energies (Basel, Switzerland) published new progress about Activation energy. 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

Caltagirone, Claudia; Gale, Philip A.; Hiscock, Jennifer R.; Hursthouse, Michael B.; Light, Mark E.; Tizzard, Graham J. published the artcile< 2-Amidoindole-based anion receptors>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is indolecarboxamide dimer preparation anion receptor stability constant; dihydrogen phosphate ligand indolecarboxamide.

The title compounds were obtained by a reaction of diamines [i.e., 1,5-pentanediamine, 1,3-benzenedimethanamine] with 1H-indole-2-carboxylic acid derivatives The above-mentioned product structures were confirmed by NMR, elemental anal., and IR. X-ray crystal structure elucidation reveals that N,N’-1,5-pentanediylbis[1H-indole-2-carboxamide] complexes dihydrogen phosphate ion pairs in the solid state, which are part of a continuous chain. While this receptor binds dihydrogen phosphate in a 1:1 stoichiometry in solution, N,N’-[1,3-phenylenebis(methylene)]bis[7-nitro-1H-indole-2-carboxamide] (i.e., a 7-nitroindole derivative), forms 1:2 receptor:dihydrogen phosphate complexes in DMSO-d6/0.5% water.

Supramolecular Chemistry published new progress about Amidation. 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

Son, Hyunjoo; Ku, Jayoung; Kim, Yoosik; Li, Sheng; Char, Kookheon published the artcile< Amine-Reactive Poly(pentafluorophenyl acrylate) Brush Platforms for Cleaner Protein Purification>, HPLC of Formula: 71195-85-2, the main research area is protein purification polymer brush polypentafluorophenyl acrylate.

Reactive pentafluorophenyl acrylate (PFPA) polymer brushes grafted on silica particles were prepared using surface-initiated reversible addition and fragmentation chain transfer polymerization The polymer brush was successfully immobilized with antibody, then used for protein separation The immunoprecipitated proteins showed successful enrichment of target protein, with reduced nonspecific background and less contamination from eluted antibodies. To further improve protein recovery, the hydrophobic poly(PFPA) brush was modified with hydrophilic poly(ethylene glycol) (PEG). The partially PEG-substituted poly(PFPA) brush showed better dispersion in aqueous solution, leading to improved antibody immobilization efficiency. By optimizing both the brush mol. weight and the degree of PEG substitution, an optimal balance between surface hydrophilicity and number of available PFP units was found, leading to efficient target protein purification This study shows that poly(PFPA) platform offers a versatile approach to prepare biomol.-activated surfaces with tunable surface property, which has potential applications in protein separation and other areas.

Biomacromolecules published new progress about Antibodies and Immunoglobulins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, HPLC of Formula: 71195-85-2.

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

Easmon, Johnny; Heinisch, Gottfried; Puerstinger, Gerhard; Langer, Thierry; Oesterreicher, Juergen K.; Grunicke, Hans H.; Hofmann, Johann published the artcile< Azinyl and Diazinyl Hydrazones Derived from Aryl N-Heteroaryl Ketones: Synthesis and Antiproliferative Activity>, Quality Control of 112-63-0, the main research area is azinyl hydrazone preparation antiproliferative activity; hydrazone diazinyl preparation antiproliferative activity; antiproliferative structure activity azinyl hydrazone preparation.

A series of N-heteroaryl hydrazones derived from aryl N-heteroaryl or bis-N-heteroaryl methanones was prepared in search for potential novel antitumor agents. The stereochem. of these compounds was established by NMR. Antiproliferative activity was determined in a panel of human tumor cell lines (CCRF-CEM, Burkitt’s lymphoma, HeLa, ZR-75-1, HT-29, and MEXF 276L) in vitro. Generally, the new compounds were more potent (IC50 = 0.011-0.436 μM) than the ribonucleotide reductase inhibitor hydroxyurea (IC50 = 140 μM). Most of the compounds exhibited the highest activity against Burkitt’s lymphoma with IC50 = 0.011-0.035 μM. [14C]Cytidine incorporation into DNA was quantitated for selected hydrazones as a measure of the inhibition of ribonucleotide reductase in Burkitt’s lymphoma cells. (E)-Hydrazones inhibit [14C]cytidine incorporation to a greater extent (IC50 = 0.67-5.05 μM) than the (Z)-isomers (IC50 = 7.20 to >10 μM). Principal component anal. of the IC50 values obtained for inhibition of cell proliferation revealed that the cell lines tested can be grouped into three main families showing different sensitivities toward the compounds in our series (i, CCRF-CEM, Burkitt’s lymphoma, and HeLa; ii, HT-29; and iii, MEXF 276 L).

Journal of Medicinal Chemistry published new progress about Cytotoxic agents. 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

Gardiner, John M.; Bruce, Sarah E. published the artcile< Unexpected diastereoselectivity in AD of an L-proline-derived 1,1-disubstituted alkene>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is asym dihydroxylation diastereoselectivity.

Asym. dihydroxylation of the L-proline-derived 1,1-disubstituted alkene I catalyzed by either (DHQ)2PHAL or (DHQD)2PHAL unexpectedly leads to preference for the same diastereomer, both reactions proceeding with apparently matching double diastereoselectivity. In contrast, AD using the analogous (DHQ)2PYR or (DHQD)2PYR ligands leads to preferences for diastereomeric diols.

Tetrahedron Letters published new progress about Dihydroxylation catalysts, stereoselective. 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

Jiang, Lijun; Lung, Hong Lok; Huang, Tao; Lan, Rongfeng; Zha, Shuai; Chan, Lai Sheung; Thor, Waygen; Tsoi, Tik-Hung; Chau, Ho-Fai; Borestrom, Cecilia; Cobb, Steven L.; Tsao, Sai Wah; Bian, Zhao-Xiang; Law, Ga-Lai; Wong, Wing-Tak; Tai, William Chi-Shing; Chau, Wai Yin; Du, Yujun; Tang, Lucas Hao Xi; Chiang, Alan Kwok Shing; Middeldorp, Jaap M.; Lo, Kwok-Wai; Mak, Nai Ki; Long, Nicholas J.; Wong, Ka-Leung published the artcile< Reactivation of epstein-barr virus by a dual-responsive fluorescent EBNA1-targeting agent with Zn2+-chelating function>, COA of Formula: C19H34O2, the main research area is epstein barr virus oncolysis cancer EBNA1 zinc probe ZRL5P4; EBNA1-targeting agent; EBV-specific lytic inducer; dual-responsive fluorescent EBV probe.

Epstein-Barr nuclear antigen 1 (EBNA1) plays a vital role in the maintenance of the viral genome and is the only viral protein expressed in nearly all forms of Epstein-Barr virus (EBV) latency and EBV-associated diseases, including numerous cancer types. To our knowledge, no specific agent against EBV genes or proteins has been established to target EBV lytic reactivation. Here we report an EBNA1- and Zn2+-responsive probe (ZRL5P4) which alone could reactivate the EBV lytic cycle through specific disruption of EBNA1. We have utilized the Zn2+ chelator to further interfere with the higher order of EBNA1 self-association The bioprobe ZRL5P4 can respond independently to its interactions with Zn2+ and EBNA1 with different fluorescence changes. It can selectively enter the nuclei of EBV-pos. cells and disrupt the oligomerization and oriP-enhanced transactivation of EBNA1. ZRL5P4 can also specifically enhance Dicer1 and PML expression, mol. events which had been reported to occur after the depletion of EBNA1 expression. Importantly, we found that treatment with ZRL5P4 alone could reactivate EBV lytic induction by expressing the early and late EBV lytic genes/proteins. Lytic induction is likely mediated by disruption of EBNA1 oligomerization and the subsequent change of Dicer1 expression. Our probe ZRL5P4 is an EBV protein-specific agent that potently reactivates EBV from latency, leading to the shrinkage of EBV-pos. tumors, and our study also suggests the association of EBNA1 oligomerization with the maintenance of EBV latency.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Antitumor agents. 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