Author: tianli

Guo, Rui published the artcileBarbier-type anti-Diastereo- and Enantioselective Synthesis of β-Trimethylsilyl, Fluorinated Methyl, Phenylthio Homoallylic Alcohols, Recommanded Product: (E)-4,4,4-Trifluorobut-2-en-1-ol, the publication is Scientific Reports (2017), 7(1), 1-12, database is CAplus and MEDLINE.

Catalytic Asym. allylation of aldehydes with functionalized allylic reagents represents an important process in synthetic organic chem. because the resulting chiral homoallylic alcs. are valuable building blocks in diverse research fields. Despite the obvious advantages of allyl halides as allylation reagent under Barbier-type conditions, catalytic asym. version using functionalized allyl halides remains largely underdeveloped. Here, authors addressed this issue by employing a chromium-catalysis system. The use of readily available allyl bromides with γ substitutions including trimethylsilyl, fluorinated Me and phenylthio groups provided an efficient and convenient method to introduce those privileged functionalities into homoallylic alcs. Good yields, high anti-diastereo- and excellent enantioselectivities were achieved under mild reaction conditions.

Scientific Reports published new progress about 83706-94-9. 83706-94-9 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethylated Building Blocks, name is (E)-4,4,4-Trifluorobut-2-en-1-ol, and the molecular formula is C4H5F3O, Recommanded Product: (E)-4,4,4-Trifluorobut-2-en-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zhang, Zhihao published the artcileSerum metabolomics reveals the effect of electroacupuncture on urinary leakage in women with stress urinary incontinence, Synthetic Route of 621-37-4, the publication is Journal of Pharmaceutical and Biomedical Analysis (2020), 113513, database is CAplus and MEDLINE.

Stress urinary incontinence (SUI), which is defined as an involuntary loss of urine upon phys. exertion coughing, sneezing or laughing, has a significant neg. impact on the quality of life of many women. Multi-center, large-scale and randomized clin. trials have illustrated that non-invasive electroacupuncture is an effective treatment for SUI, but its therapeutic mechanism in treating SUI remains unknown. Here, gas chromatog.-mass spectrometry based serum metabolomics was performed to reveal metabolic profiles and diagnostic biomarkers from recruitment of 25 patients and 25 healthy women before and after electroacupuncture. We identified 10 differentially abundant metabolites, including butantriol, 3,4-dihydroxybutanoic acid, succinic acid, 1-deoxypentitol, psicose, citric acid, 3-hydroxybutyric acid, hydracrylic acid, 3-hydroxyphenylacetic acid and D-mannitol, from patients between before and after electroacupuncture. The electroacupuncture therapy altered propanoate metabolism, butanoate metabolism and the tricarboxylic acid cycle. A panel of 8 biomarkers (butantriol, 3,4-dihydroxybutanoic acid, succinic acid, 1-deoxypentitol, psicose, citric acid, 3-hydroxybutyric acid and hydracrylic acid) was evaluated to determine the effect of electroacupuncture on SUI and differentiated well between before and after treatment. The area under the receiver operating characteristic curve was 0.962. The sensitivity, specificity and coincidence rate were 92%, 92% and 96%, resp., at a 95% confidence interval ranging from 0.9053 to 1. Furthermore, the levels of these diagnostic biomarkers were not significantly altered in healthy subjects after sham electroacupuncture. It was indicated that an 8-biomarker panel might be constructed for the therapeutic evaluation of electroacupuncture treatment for SUI.

Journal of Pharmaceutical and Biomedical Analysis published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C4H12ClNO, Synthetic Route of 621-37-4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zhang, Kaifu published the artcileSynthesis of a Gold-Metal Oxide Core-Satellite Nanostructure for In Situ SERS Study of CuO-Catalyzed Photooxidation, Application of Triethylsilanol, the publication is Angewandte Chemie, International Edition (2020), 59(41), 18003-18009, database is CAplus and MEDLINE.

This work reports on an assembling-calcining method for preparing gold-metal oxide core-satellite nanostructures, which enable surface-enhanced Raman spectroscopic detection of chem. reactions on metal oxide nanoparticles. By using the nanostructure, we study the photooxidation of Si-H catalyzed by CuO nanoparticles. As evidenced by the in situ spectroscopic results, oxygen vacancies of CuO are found to be very active sites for oxygen activation, and hydroxyl radicals (·OH) adsorbed at the catalytic sites are likely to be the reactive intermediates that trigger the conversion from silanes into the corresponding silanols. According to our finding, oxygen vacancy-rich CuO catalysts are confirmed to be of both high activity and selectivity in photooxidation of various silanes.

Angewandte Chemie, International Edition published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is 0, Application of Triethylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zhang, Kaifu published the artcileSynthesis of a Gold-Metal Oxide Core-Satellite Nanostructure for In Situ SERS Study of CuO-Catalyzed Photooxidation, Product Details of C9H22OSi, the publication is Angewandte Chemie, International Edition (2020), 59(41), 18003-18009, database is CAplus and MEDLINE.

This work reports on an assembling-calcining method for preparing gold-metal oxide core-satellite nanostructures, which enable surface-enhanced Raman spectroscopic detection of chem. reactions on metal oxide nanoparticles. By using the nanostructure, we study the photooxidation of Si-H catalyzed by CuO nanoparticles. As evidenced by the in situ spectroscopic results, oxygen vacancies of CuO are found to be very active sites for oxygen activation, and hydroxyl radicals (·OH) adsorbed at the catalytic sites are likely to be the reactive intermediates that trigger the conversion from silanes into the corresponding silanols. According to our finding, oxygen vacancy-rich CuO catalysts are confirmed to be of both high activity and selectivity in photooxidation of various silanes.

Angewandte Chemie, International Edition published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C21H24O8, Product Details of C9H22OSi.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Ma, Yao published the artcileNonpeptidic quinazolinone derivatives as dual nucleotide-binding oligomerization domain-like receptor 1/2 antagonists for adjuvant cancer chemotherapy, Name: 3-Morpholinophenol, the publication is European Journal of Medicinal Chemistry (2020), 112723, database is CAplus and MEDLINE.

Nucleotide-binding oligomerization domain-containing protein 1 and 2 (NOD1/2) receptors are potential immune checkpoints. In this article, a quinazolinone derivative, I, as a NOD1/2 dual antagonist was identified that significantly sensitizes B16 tumor-bearing mice to paclitaxel treatment by inhibiting both nuclear factor κB (NF-κB) and mitogen-activated protein kinase inflammatory signaling that mediated by NOD1/2.

European Journal of Medicinal Chemistry published new progress about 27292-49-5. 27292-49-5 belongs to alcohols-buliding-blocks, auxiliary class Morpholine,Benzene,Phenol, name is 3-Morpholinophenol, and the molecular formula is C10H13NO2, Name: 3-Morpholinophenol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Hao, Yuxin published the artcileStability and mechanism of phenolic compounds from raspberry extract under in vitro gastrointestinal digestion, SDS of cas: 621-37-4, the publication is LWT–Food Science and Technology (2021), 110552, database is CAplus.

Raspberry extract (RE) is a raspberry product with high anthocyanins and low sugar. In the present study, to evaluate the metabolic behavior of phenolic compounds of RE under in vitro digestion (gastric (GF), gastric to intestinal (G-IF), and colonic fermentation (CF)), the changes of 30 phenolic compounds were investigated by High Performance Liquid Chromatog.-Mass Spectrometry. The results showed that phenolic compounds were relatively stable in GF, but rapidly decreased in G-IF and CF. Five anthocyanins accounted for 61.1% of total polyphenol contents (TPCs). Among them, anthocyanins bound to glucose or with two hydroxyl groups on B-ring were metabolized more quickly. The catabolic activity of the human microbiota resulted in the production of a series of low mol. weight phenolics, such as hydroxybenzoic acids. Ellagic acid, accounting for 17.7% of TPCs, was rapidly metabolized to urolithin B and urolithin C in CF. Moreover, urolithin C showed the highest antioxidant activity in all ellagic acid metabolites by DPPH assay. Consequently, the metabolic behavior of phenolic compounds was mainly influenced by pH and intestinal microbiota, which provided the basis for further in vivo and in vitro study and efficient utilization of the extract

LWT–Food Science and Technology published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C8H8O3, SDS of cas: 621-37-4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Chen, Jinxiang published the artcileStructure-antioxidant activity relationship of methoxy, phenolic hydroxyl, and carboxylic acid groups of phenolic acids, Formula: C8H8O3, the publication is Scientific Reports (2020), 10(1), 2611, database is CAplus and MEDLINE.

The antioxidant activities of 18 typical phenolic acids were investigated using 2, 2′-diphenyl-1-picrylhydrazyl (DPPH) and ferric ion reducing antioxidant power (FRAP) assays. Five thermodn. parameters involving hydrogen atom transfer (HAT), single-electron transfer followed by proton transfer (SET-PT), and sequential proton-loss electron transfer (SPLET) mechanisms were calculated using d. functional theory with the B3LYP/UB3LYP functional and 6-311++G (d, p) basis set and compared in the phenolic acids. Based on the same substituents on the benzene ring, -CH₂COOH and -CH = CHCOOH can enhance the antioxidant activities of phenolic acids, compared with -COOH. Methoxyl (-OCH₃) and phenolic hydroxyl (-OH) groups can also promote the antioxidant activities of phenolic acids. These results relate to the O-H bond dissociation enthalpy of the phenolic hydroxyl group in phenolic acids and the values of proton affinity and electron transfer enthalpy (ETE) involved in the electron donation ability of functional groups. In addition, we speculated that HAT, SET-PT, and SPLET mechanisms may occur in the DPPH reaction system. Whereas SPLET was the main reaction mechanism in the FRAP system, because, except for 4-hydroxyphenyl acid, the ETE values of the phenolic acids in water were consistent with the exptl. results.

Scientific Reports published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C8H8O3, Formula: C8H8O3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zheng, Zifeng published the artcileTick-borne encephalitis virus nonstructural protein NS5 induces RANTES expression dependent on the RNA-dependent RNA polymerase activity, Recommanded Product: Triisopropanolamine, the publication is Journal of Immunology (2018), 201(1), 53-68, database is CAplus and MEDLINE.

Tick-borne encephalitis virus (TBEV) is one of the flaviviruses that targets the CNS and causes encephalitis in humans. The mechanism of TBEV that causes CNS destruction remains unclear. It has been reported that RANTES-mediated migration of human blood monocytes and T lymphocytes is specifically induced in the brain of mice infected with TBEV, which causes ensuing neuroinflammation and may contribute to brain destruction. However, the viral components responsible for RANTES induction and the underlying mechanisms remain to be fully addressed. In this study, we demonstrate that the NS5, but not other viral proteins of TBEV, induces RANTES production in human glioblastoma cell lines and primary astrocytes. TBEV NS5 appears to activate the IFN regulatory factor 3 (IRF-3) signaling pathway in a manner dependent on RIG-I/MDA5, which leads to the nuclear translocation of IRF-3 to bind with RANTES promoter. Further studies reveal that the activity of RNA-dependent RNA polymerase (RdRP) but not the RNA cap methyltransferase is critical for TBEV NS5-induced RANTES expression, and this is likely due to RdRP-mediated synthesis of dsRNA. Addnl. data indicate that the residues at K359, D361, and D664 of TBEV NS5 are critical for RdRP activity and RANTES induction. Of note, NS5s from other flaviviruses, including Japanese encephalitis virus, West Nile virus, Zika virus, and dengue virus, can also induce RANTES expression, suggesting the significance of NS5-induced RANTES expression in flavivirus pathogenesis. Our findings provide a foundation for further understanding how flaviviruses cause neuroinflammation and a potential viral target for intervention.

Journal of Immunology published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C10H16Br3N, Recommanded Product: Triisopropanolamine.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Huang, Chaonan published the artcileAn efficient mixed-mode strong anion-exchange adsorbent based on functionalized polyethyleneimine for simultaneous solid phase extraction and purification of bisphenol analogues and monoalkyl phthalate esters in human urine, Name: 4,4′-Sulfonyldiphenol, the publication is Microchemical Journal (2022), 107536, database is CAplus.

In this study, a mixed-mode strong anion-exchange (MAX) adsorbent was developed based on amine-functionalized poly(divinylbenzene) (PDVB) functionalized with polyethyleneimine (PEI) followed by quaternization with glycidyl Ph ether (named as PDVB-QPEI). Fourier Transform IR spectroscopy and nitrogen adsorption-desorption experiments indicated that the PDVB-QPEI was successfully synthesized with a BET sp. surface area (SBET) of 118.5 m² g-1, pore volume of 0.37 cm3 g-1, and pore size of 16.41 nm. High ion-exchange capacity (IEC) of 0.57 mmol g-1 was achieved. The important parameters influencing SPE efficiency were optimized, including adsorbent mass, pH of the sample, type and volume of washing solvent and eluent. The practical capability of this novel PDVB-QPEI MAX adsorbent was tested for solid phase extraction and purification of bisphenol analogs and monoalkyl phthalate esters (MPEs) in urine samples. Outstanding extraction and cleanup efficiency were achieved simultaneously for urine samples due to high selectivity of the PDVB-QPEI adsorbent for bisphenol analogs and MPEs. Recovery values ranged from 80.1% to 102.4% with precision (relative standard devition, n = 3) below 6% for these blank urine samples spiked at different levels. The limit of detections (LODs) obtained by HPLC-DAD were in the range of 3-9 ng mL-1. The PDVB-QPEI is superior to com. adsorbents (Oasis HLB, C18 and Oasis MAX). These results demonstrated the great potential application of the PDVB-QPEI adsorbent in routine anal. of bisphenol analogs and MPEs in complex samples.

Microchemical Journal published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, Name: 4,4′-Sulfonyldiphenol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

McDonald, Claudia A. published the artcileCombining results from lectin affinity chromatography and glycocapture approaches substantially improves the coverage of the glycoproteome, Computed Properties of 85618-21-9, the publication is Molecular and Cellular Proteomics (2009), 8(2), 287-301, database is CAplus and MEDLINE.

Identification of glycosylated proteins, especially those in the plasma membrane, has the potential of defining diagnostic biomarkers and therapeutic targets as well as increasing the understanding of changes occurring in the glycoproteome during normal differentiation and disease processes. Although many cellular proteins are glycosylated they are rarely identified by mass spectrometric anal. (e.g. shotgun proteomics) of total cell lysates. Therefore, methods that specifically target glycoproteins are necessary to facilitate their isolation from total cell lysates prior to their identification by mass spectrometry-based anal. To enrich for plasma membrane glycoproteins the methods must selectively target characteristics associated with proteins within this compartment. The authors demonstrate that the application of two methods, one that uses periodate to label glycoproteins of intact cells and a hydrazide resin to capture the labeled glycoproteins and another that targets glycoproteins with sialic acid residues using lectin affinity chromatog., in conjunction with liquid chromatog.-tandem mass spectrometry is effective for plasma membrane glycoprotein identification. The authors demonstrate that this combination of methods dramatically increases coverage of the plasma membrane proteome (more than one-half of the membrane glycoproteins were identified by the two methods uniquely) and also results in the identification of a large number of secreted glycoproteins. The authors’ approach avoids the need for subcellular fractionation and utilizes a simple detergent lysis step that effectively solubilizes membrane glycoproteins. The plasma membrane localization of a subset of proteins identified was validated, and the dynamics of their expression in HeLa cells was evaluated during the cell cycle. Results obtained from the cell cycle studies demonstrate that plasma membrane protein expression can change up to 4-fold as cells transit the cell cycle and demonstrate the need to consider such changes when carrying out quant. proteomics comparison of cell lines.

Molecular and Cellular Proteomics published new progress about 85618-21-9. 85618-21-9 belongs to alcohols-buliding-blocks, auxiliary class Tetrahydropyran,Chiral,sulfides,Alcohol, name is (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C14H28O5S, Computed Properties of 85618-21-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts