Category: esters-buliding-blocks

Carrillo-Varela, Isabel published the artcileMethylene blue adsorption onto hydrogels made from different Eucalyptus dissolving pulps, Related Products of esters-buliding-blocks, the publication is Cellulose (Dordrecht, Netherlands) (2022), 29(1), 445-468, database is CAplus.

Bleached kraft pulp from Eucalyptus benthamii, E. globulus and E. nitens was purified via cold caustic extraction (CCE) with 5% and 10% (w/v) NaOH and activated with dilute acid hydrolysis (samples were coded as CCE5-H and CCE10-H, resp.) to produce dissolving-grade pulp. Hydrogels from CCE5-H and CCE10-H pulps were fabricated through the N-methylmorpholine N-oxide route and tested for methylene blue (MB) adsorption. The morphol., fiber biometry, mol. and supramol. structure, thermal stability and swelling capacity were also investigated. A higher degree of crystallinity was observed for cellulose in CCE10-H hydrogels. CCE10-H hydrogels also resulted in denser structures with lower swelling than CCE5-H hydrogels. The exptl. data for MB adsorption were fitted better to the Langmuir model, which led to estimated maximum adsorption capacities of 36-51 mg/g for CCE5-H hydrogels and 27-33 mg/g for CCE10-H hydrogels. Regarding the Eucalyptus species, hydrogels fabricated from E. nitens exhibited the highest capacities for adsorption of MB. This was attributed to the lowest crystalline fractions and crystallite sizes, and the highest kink indexes and intrinsic viscosities of E. nitens dissolving pulps, which resulted in regenerated hydrogels with highest pore coverage and water absorption capacities, and better accessibility to MB particles.

Cellulose (Dordrecht, Netherlands) published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Teng, Shuang published the artcileTogni-II Reagent Mediated Selective Hydrotrifluoromethylation and Hydrothiolation of Alkenes, Category: esters-buliding-blocks, the publication is Chinese Journal of Chemistry (2021), 39(12), 3429-3434, database is CAplus.

Based on the redox reactions of Togni-II reagent and thiols (such as propane-2-thiol, cyclohexanethiol, dodecan-1-thiol, p-toluenethiol, etc.), a thiol-tuned selective functionalization of unactivated olefins was disclosed. In combination with aryl thiol (p-toluenethiol), stoichiometric amount of Togni-II reagent prompted a hydrotrifluoromethylation of alkenes (such as N-allyl-benzamide, 1-phenyl-but-3-en-1-ol, 4-chloro-benzoic acid pent-4-enyl ester, etc.), in which, aryl thiol played as reductant and hydrogen source; while by utilization of alkyl thiols (such as propane-2-thiol, cyclohexanethiol, dodecan-1-thiol, etc.), catalytic amount of Togni-II reagent initiated thiol-ene and thiol-yne reactions. The reported applications are characterized by their operational simplicity and wide functional group tolerance.

Chinese Journal of Chemistry published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C14H19NO8, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Xu, Huaide published the artcileChanges of aroma components in chaenomeles sinensis fruits during storage, SDS of cas: 110-34-9, the publication is Xibei Zhiwu Xuebao (2007), 27(3), 537-542, database is CAplus.

Aroma components were extracted by distillation and solvent extraction (SDE) at different storage time in Chaenomeles sinensis fruits. According to the anal. of GC-MS, esters and alkenes were increasing along with the storage time, but alcs., ketones and aldehydes were decreasing. At the beginning of the storage, the dominant aroma components in Chaenomeles sinensis fruits were 4-Methyl-5-penta-1,3-dienyltetrahydrofuran-2-one, 4-(2,6,6-Trimethylcyclohex-1-enyl)-butan-2-ol and (Z)-3-Hexen-1-ol. After 40 days storage at 8 degrees, the main components and their relative contents were alkenes (21.07%), esters (18.73%) and alcs. (16.34%). After 90 days storage, the relative content of Et esters of aliphatic acids significantly increased to 34.86%, among which the critical one was 3-Nonenoic acid, Et ester (21.67%). In addition, the relative content of α-Farnesene increased from 3.63% at the beginning of the storage to 35.22% after 90 days storage.

Xibei Zhiwu Xuebao published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C6H8N2O2S, SDS of cas: 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liu, Bao-yu published the artcileThe synthesis of camostat intermediate, Formula: C12H15NO4, the publication is Huaxue Shiji (2006), 28(6), 371-372, database is CAplus.

4-(2-(2-(Dimethylamino)-2-oxoethoxy)-2-oxoethyl)phenyl-4-aminobenzoate, the intermediate of camostat, was obtained at room temperature and normal pressure with dimethylamine as the starting materials through 4 reaction steps to reduce the nitro group with ammonium formate as the hydrogen donor and palladium as the catalyst. The structure has been confirmed by FT-IR and ¹HNMR spectra.

Huaxue Shiji published new progress about 59721-16-3. 59721-16-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Phenol,Ester,Amide, name is 2-(Dimethylamino)-2-oxoethyl 2-(4-hydroxyphenyl)acetate, and the molecular formula is C12H15NO4, Formula: C12H15NO4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kumari, Nalinee published the artcileQualitative assessment of bioactive compounds of actinomycetes AIA25a isolate using HPTLC and GCMS technique, COA of Formula: C42H63O3P, the publication is Indian Journal of Chemical Technology (2022), 29(3), 303-310, database is CAplus.

In the present study AIA25a strain has been isolated from the rhizospheric soil actinomycetes from selected locations of Rajasthan. Antimicrobial activity test of AIA25a against bacterial strains S. aureus (MTCC 3160), P. aeruginosa (MTCC 1688), P. mirabilis (ITCC 425) has been carried out. A good activity is shown by chloroform crude extract against P. aeruginosa (IZ = 13.4±0.3mm), moderate activity (IZ = 11.1±0.1) is shown against S. aureus and no activity is observed against P. mirabilis strain. Different compounds isolation is executed with the help of chloroform solvent. Using GC-MS identification has been carried out for compounds present in AIA25a strain followed by partial purification of compounds With the help of HPTLC method partial purification of compounds has been achieved and followed by GC-MS anal. for identification of separated compounds The Bioautog. technique has been applied for the detection of antimicrobial spot of partial purified compounds of crude extract of AIA25a isolate. Results of this study show the presence of various compounds in the rhizospheric soil of Rajasthan.

Indian Journal of Chemical Technology published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, COA of Formula: C42H63O3P.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Rabizadeh, E. published the artcilePivanex, a histone deacetylase inhibitor, induces changes in BCR-ABL expression and when combined with STI571, acts synergistically in a chronic myelocytic leukemia cell line, Computed Properties of 122110-53-6, the publication is Leukemia Research (2007), 31(8), 1115-1123, database is CAplus and MEDLINE.

Chronic myelogenous leukemia (CML) is associated with the high TK activity chimeric protein BCR-ABL, known to contribute to cell tumorigenicity, resistance to apoptosis and differentiation. STI571, the TK inhibitor, is the current treatment for CML. One possible approach to overcome STI571 resistance appearing in some cases, involves the combination of histone deacetylase inhibitors (HDI) and STI571. We demonstrated that in K562, the CML cell line, pivaloyloxymethyl butyrate (Pivanex)-induced apoptosis, differentiation and reduced BCR-ABL protein levels and that the combination of Pivanex with STI571 acted synergistically. These data suggest the possible benefit of combining this HDI with STI571 for treatment of CML.

Leukemia Research published new progress about 122110-53-6. 122110-53-6 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester,Inhibitor, name is (Pivaloyloxy)methyl butyrate, and the molecular formula is C10H18O4, Computed Properties of 122110-53-6.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Urquilla, Andromeda published the artcileSynthesis and Biological Activity of 2-(2-Amino-2-phenylethyl)-5-oxotetrahydrofuran-2-carboxylic Acid: A Microwave-Assisted 1,3-Dipolar Cycloaddition Approach, COA of Formula: C7H10O4, the publication is Synlett (2021), 32(17), 1735-1740, database is CAplus.

The microwave-assisted 1,3-dipolar cycloaddition of furanyl and benzyl oximes RCH=NOH (R = furan-2-yl, Ph) and several Me acrylates R¹C(=CH₂)C(O)OCH₃ [R¹ = 3-methoxy-3-oxopropyl, 2-methoxy-2-oxoethyl] effectively provided several isoxazolines I when mediated by diacetoxyiodobenzene. The selected isoxazolines I, methyl-5-(3-methoxy-3-oxopropyl)-3-phenyl-4,5-dihydro isoxazole-5-carboxylate, was rapidly transformed to the γ-lactone carboxylic acid, 2-(2-amino-2-phenylethyl)-5-oxotetrahydrofuran-2-carboxylic acid, in reasonable yield. The biol. activity of this γ-lactone carboxylic acid increased the growth of E. coli organisms by about 44% and has a potential significance in stem cell research.

Synlett published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C5H10BNO2, COA of Formula: C7H10O4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pino, Jorge A. published the artcileVolatile Components from Mango (Mangifera indica L.) Cultivars, Category: esters-buliding-blocks, the publication is Journal of Agricultural and Food Chemistry (2005), 53(6), 2213-2223, database is CAplus and MEDLINE.

The volatile components of 20 mango cultivars were investigated by means of simultaneous distillation-extraction, GC, and GC-MS. Three hundred and seventy-two compounds were identified, of which 180 were found for the 1st time in mango fruit. The total concentration of volatiles was ∼18-123 mg/kg of fresh fruit. Terpene hydrocarbons were the major volatiles of all cultivars, the dominant terpenes being δ-3-carene (cvs. Haden, Manga amarilla, Macho, Manga blanca, San Diego, Manzano, Smith, Florida, Keitt, and Kent), limonene (cvs. Delicioso, Super Haden, Ordonez, Filipino, and La Paz), both terpenes (cv. Delicia), terpinolene (cvs. Obispo, Corazon, and Huevo de toro), and α-phellandrene (cv. Minin). Other qual. and quant. differences among the cultivars could be demonstrated.

Journal of Agricultural and Food Chemistry published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Cordes, Thekla published the artcileItaconate alters succinate and coenzyme A metabolism via inhibition of mitochondrial complex II and methylmalonyl-CoA mutase, Quality Control of 617-52-7, the publication is Metabolites (2021), 11(2), 117, database is CAplus and MEDLINE.

Itaconate is a small mol. metabolite that is endogenously produced by cis-aconitate decarboxylase-1 (ACOD1) in mammalian cells and influences numerous cellular processes. The metabolic consequences of itaconate in cells are diverse and contribute to its regulatory function. Here, we have applied isotope tracing and mass spectrometry approaches to explore how itaconate impacts various metabolic pathways in cultured cells. Itaconate is a competitive and reversible inhibitor of Complex II/succinate dehydrogenase (SDH) that alters tricarboxylic acid (TCA) cycle metabolism leading to succinate accumulation. Upon activation with CoA (CoA), itaconyl-CoA inhibits adenosylcobalamin-mediated methylmalonyl-CoA (MUT) activity and, thus, indirectly impacts branched-chain amino acid (BCAA) metabolism and fatty acid diversity. Itaconate, therefore, alters the balance of CoA species in mitochondria through its impacts on TCA, amino acid, vitamin B12, and CoA metabolism Our results highlight the diverse metabolic pathways regulated by itaconate and provide a roadmap to link these metabolites to potential downstream biol. functions.

Metabolites published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C7H10O4, Quality Control of 617-52-7.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Champion, Aymeric published the artcileA Simple and Efficient Model to Determine the Photonic Parameters of a Photopolymerizable Resin Usable in 3D Printing, Recommanded Product: Ethyl 4-dimethylaminobenzoate, the publication is ChemPhotoChem (2021), 5(9), 839-846, database is CAplus.

This study provides insight into the relationship between the photochem. reactivity and the photonic parameters of an acrylate formulation usable in digital light processing (DLP) 3D printing. First the photoreactivity of riboflavin tetrabutyrate (RFT) used as a non-toxic photoinitiator is assessed by laser flash photolysis in the absence and in the presence of an amine as co-initiator. RFT alone is able to photopolymerize the acrylate formulation at a rate which is drastically increased when the co-initiator is added. Then, the depth of light penetration (Dp) and the critical energy (Ec) to form a polymer film were measured and compared to those determined from the Bouguer-Lambert-Beer law for Dp and from the Stockmayer equation and photopolymerization experiments for Ec. A new proposed model is able to predict the in-depth acrylate conversion within a printed part with a relatively low input of exptl. parameters. Confocal Raman microscopy is used to discuss the effect of the photobleaching of RFT in the absence of co-initiator on the photopolymerized films. Finally, it is shown that this formulation performs quite well for 3D printing with a resolution close to the best performance of the DLP printer.

ChemPhotoChem published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Recommanded Product: Ethyl 4-dimethylaminobenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics