Month: October 2022

Su, Lebin; Xie, Shimin; Dong, Jianyu; Liu, Feng; Yin, Shuang-Feng; Zhou, Yongbo published the artcile< Copper-Catalyzed Nitrogen Atom Transfer to Isoquinolines via C-N Triple Bond Cleavage and Three-Component Cyclization>, Name: (4-Ethynylphenyl)methanol, the main research area is bromoaryl ketone alkyne acetonitrile copper catalyst three component cyclization; isoquinoline preparation.

A copper(I)-catalyzed tandem reaction of 2-bromoaryl ketones, terminal alkynes, and CH3CN was developed, which combines N atom transfer and three-component [3 + 2 + 1] cyclization, and efficiently produces densely functionalized isoquinolines in a facile, highly selective, and general manner. In the reaction, the formation of aromatic C-N bonds along with the complete C-N triple bond cleavage was first realized; Cu(III)-acetylide species might serve as the intermediates, which allow highly selective 6-endo-dig cyclization.

Organic Letters published new progress about Alkynes, aryl Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Name: (4-Ethynylphenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yan, Jing-Kun; Wu, Li-Xia; Qiao, Ze-Ru; Cai, Wu-Dan; Ma, Haile published the artcile< Effect of different drying methods on the product quality and bioactive polysaccharides of bitter gourd (Momordica charantia L.) slices>, Category: alcohols-buliding-blocks, the main research area is drying polysaccharide bitter gourd antioxidant antidiabetic; Bioactivity; Bitter gourd (Momordica charantia L.); Drying method; Physicochemical property; Polysaccharide.

In this study, three drying methods, namely, hot-air drying, freeze drying (FD), and IR radiation drying (ID), were applied to dry bitter gourd (Momordica charantia L.) slices. Results showed that the drying methods had significant influences on appearance, color, rehydration ratio, and microstructure of dried bitter gourd. FD provided high-quality dried bitter gourd products due to the uniform honeycomb network and less collapsed structure. Three water-soluble bitter gourd polysaccharides (BPS-H, BPS-F, and BPS-I) were obtained from the bitter gourd dried using the three drying methods. The three polysaccharides exhibited similar preliminary structural characteristics with different monosaccharide compositions and mol. weights BPS-I obtained from ID-dried bitter gourd had higher sugar and uronic acid contents than BPS-H and BPS-F. BPS-I exhibited stronger antioxidant activities and bile acid-binding capacity in vitro than BPS-H and BPS-F. Moreover, BPS-F and BPS-I showed significant α-amylase inhibitory activities in vitro.

Food Chemistry published new progress about Air drying process. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shen, Li; Cai, Kaimin; Yu, Jin; Cheng, Jianjun published the artcile< Facile Click-Mediated Cell Imaging Strategy of Liposomal Azido Mannosamine Lipids via Metabolic or Nonmetabolic Glycoengineering>, Reference of 5505-63-5, the main research area is fluorescence imaging liposome azido mannosamine lipid.

Two Ac4ManNAz (AAM) derivatives with octadecanoic ester (C18 ester) and octadecyl ether (C18 ether) attached to the anomeric hydroxyl groups were synthesized and used in preparation of liposomes. Both liposomes show strong cell-labeling efficiencies on MDA-MB-231 cancer cells. The cell surface-anchored azide group can react with DBCO-Cy5 via Cu-free click chem. The two liposomes exhibit different azide placement mechanisms; C18-ether-AAM-treated cells have azido placement through direct insertion, while C18-ester-AAM-treated cells express azido more through metabolic glycoengineering.

ACS Omega published new progress about Confocal laser scanning microscopy. 5505-63-5 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H14ClNO5, Reference of 5505-63-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Das, Joydip published the artcile< Identification of alcohol-binding site(s) in proteins using diazirine-based photoaffinity labeling and mass spectrometry>, HPLC of Formula: 25055-82-7, the main research area is protein alc binding site diazirine photoaffinity labeling mass spectrometry; alcoholism; azialcohol; diazirine; mass spectrometry; photoaffinity labeling.

Defining mol. targets of alc. and understanding the mol. mechanism of alc. actions are necessary to develop effective therapeutics for alc. use disorder (AUD). Here, we describe a detailed protocol for identifying alc.-binding site(s) in proteins using diazirine-based azialc. as photoaffinity labeling agents. Upon photoirradiation, azialc. photoincorporates into alc.-binding proteins. The stoichiometry and site of azialc. photoincorporation can be determined using high-resolution mass spectrometry. Identification of the alc.-binding residues in protein followed by measuring the biol. significance of these residues in regulating alc. action are important steps in characterizing the mol. targets of alc.

Chemical Biology & Drug Design published new progress about Algorithm (SEQUEST). 25055-82-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8N2O, HPLC of Formula: 25055-82-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yao, Hongyan; Wang, Yongsheng; Razi, Maryam Kargar published the artcile< An asymmetric Salamo-based Zn complex supported on Fe3O4 MNPs: a novel heterogeneous nanocatalyst for the silyl protection and deprotection of alcohols under mild conditions>, Reference of 699-12-7, the main research area is hexamethyldisiloxane alc heterogeneous zinc complex catalyst trimethylsilylation green chem; trimethylsilyl ether preparation heterogeneous zinc complex catalyst deprotection; alc preparation green chem; iron oxide support salamo zinc complex preparation thermal stability.

A magnetic asym. Salamo-based Zn complex (H2L = salen type di-Schiff bases)-supported on the surface of modified Fe3O4 (Fe3O4@H2L-Zn) as a new catalyst was designed and characterized via numerous anal. techniques such as FT-IR spectroscopy, XRD, EDS, ICP-AES, SEM, TEM, TGA and VSM. An efficient and sustainable synthetic protocol were presented for the synthesis of silyl ether substructures via the silyl protection of alcs. under mild conditions. The synthetic protocol involved a two-component solvent-free reaction between various hydroxyl-bearing substrates and hexamethyldisilazane (HMDS) as an inexpensive silylating agent using Fe3O4@H2L-Zn MNPs as a magnetically separable, recyclable and reusable heterogeneous catalyst. Fe3O4@H2L-Zn MNPs were also applied for the removal of silyl protecting groups from hydroxyl functions using water in DCM under green conditions. The catalyst demonstrated good to excellent catalytic yield efficiency for both the reactions compared to the com. metal-based catalysts under green conditions for a wide range of substrates.

RSC Advances published new progress about Alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Reference of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Chong; Hu, Bowen; Chen, Dafa; Xia, Haiping published the artcile< Manganese(I)-Catalyzed Transfer Hydrogenation and Acceptorless Dehydrogenative Condensation: Promotional Influence of the Uncoordinated N-Heterocycle>, Name: 1-(4-Fluorophenyl)ethyl Alcohol, the main research area is manganese pyridylquinoline pyridylnaphthyridine preparation catalyst transfer hydrogenation dehydrogenative condensation; transfer hydrogenation ketone aldehyde catalyzed manganese carbonyl pyridylquinoline pyridylnaphthyridine; dehydrogenative condensation alc ketone catalyzed manganese carbonyl pyridylnaphthyridine; crystal structure manganese carbonyl bipyridinol complex.

The four bidentate Mn(I) complexes [(C5H4N-C5H3N-OH)Mn(CO)3Br] (1), [(C9H6N-C5H3N-OH)Mn(CO)3Br] (2), [(C8H5N2-C5H3N-OH)Mn(CO)3Br] (3), and [(C8H5N2-C5H3N-OCH3)Mn(CO)3Br] (4) were synthesized. These complexes were tested as catalysts for the transfer hydrogenation of ketones, and 3 showed the highest activity. The reactions proceeded well with 0.5 mol % of catalyst loading and 20 mol % of t-BuOK at 85° for 24 h. Also, 3 was also used as a catalyst for the synthesis of primary alcs. via transfer hydrogenation of aldehydes and the synthesis of 1,2-disubstituted benzimidazoles and quinolines via acceptorless dehydrogenative condensations.

Organometallics published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Name: 1-(4-Fluorophenyl)ethyl Alcohol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gu, Haiping; Foong, Shin Ying; Lam, Su Shiung; Yue, Xiaochen; Yang, Jun; Peng, Wanxi published the artcile< Characterization and potential utilization of extracts and pyrolyzates from Jasminum nudiflorum Lindl. Bark>, Reference of 699-12-7, the main research area is potential utilization extract pyrolyzate Jasminum nudiflorum bark characterization.

Utilization of lignocellulosic biomass is increasingly important. Jasminum nudiflorum Lindl. (JNL) is a widely cultivated landscape plant in China. To evaluate the chem. components, pyrolysis characteristics as well as the potential values of JNL bark for utilization, the components were extracted using methanol, ethanol, and benzene/ethanol (2:1, volume/volume) and pyrolyzed from room temperature to 300°C, resp. Many components were detected in the extracts and the pyrolyzates of JNL bark and their chem. properties were analyzed. The compounds identified in the extracts and the pyrolyzates of JNL bark included acids, aldehydes, alcs., esters, ketones, aromatics, saccharides, olefins, and nitrogen-containing compounds Some of the identified compounds, such as urs-12-en-28-al, 3-(acetyloxy)-, (3.beta.)-, 5-hydroxymethylfurfural, and vanillin, are widely used in the medical, energy, and food industries. The pyrolysis of JNL bark using thermogravimetric analyzer showed the highest reaction rate occurred at between 200 and 300°C where the maximum mass loss was observed According to the Coats-Redfern method, the calculated apparent activation energy (E) and pre-exponential factor (A) of the pyrolysis process of JNL bark were 52.04 kJ mol-1 and 3.14 x 105 min-1, resp. This research provides information on the components and pyrolysis characteristics of JNL bark, which shows great potential for application in medical, food, and chem. industries.

Journal of Analytical and Applied Pyrolysis published new progress about Activation energy. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Reference of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Korade, Zeljka; Allen, Luke B.; Anderson, Allison; Tallman, Keri A.; Genaro-Mattos, Thiago C.; Porter, Ned A.; Mirnics, Karoly published the artcile< Trazodone effects on developing brain>, Product Details of C27H44O, the main research area is Dhcr7 genotype trazodone brain.

Abstract: Trazodone (TRZ) is a commonly prescribed antidepressant with significant off-label use for insomnia. Recognizing the well-documented, disruptive effect of 7-DHC on brain development, we designed a study to analyze TRZ effects during pregnancy. Utilizing an in vivo model and human biomaterial, our studies were designed to also account for drug interactions with maternal or offspring Dhcr7 genotype. In a maternal exposure model, we found that TRZ treatment increased 7-DHC and decreased desmosterol levels in brain tissue in newborn pups. We also observed interactions between Dhcr7 mutations and maternal TRZ exposure, giving rise to the most elevated toxic oxysterols in brains of Dhcr7+/- pups with maternal TRZ exposure, independently of the maternal Dhcr7 genotype. Therefore, TRZ use during pregnancy might be a risk factor for in utero development of a neurodevelopmental disorder, especially when the unborn child is of DHCR7+/- genotype. The effects of TRZ on 7-DHC was corroborated in human serum samples. We analyzed sterols and TRZ levels in individuals with TRZ prescriptions and found that circulating TRZ levels correlated highly with 7-DHC. The abundance of off-label use and high prescription rates of TRZ might represent a risk for the development of DHCR7 heterozygous fetuses. Thus, TRZ use during pregnancy is potentially a serious public health concern.

Translational Psychiatry published new progress about Brain. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Product Details of C27H44O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Song, Liyan; Lai, Yunrong; Li, Hongzuo; Ding, Jipeng; Yao, Hongliang; Su, Qian; Huang, Binbin; Ouyang, Ming-An; Tong, Rongbiao published the artcile< Environmentally Benign and User-Friendly In Situ Generation of Nitrile Imines from Hydrazones for 1,3-Dipolar Cycloaddition>, Computed Properties of 627-27-0, the main research area is aldehyde hydrazone alkene three component dipolar cycloaddition; pyrazoline regioselective preparation green chem.

The first green and user-friendly protocol for in situ generation of nitrile imines from Oxone-KBr oxidation of hydrazones and base-promoted dehydrobromination was reported. The nitrile imines were demonstrated for 1,3-dipolar cycloaddition with various dipolarophiles, including alkene and alkyne groups.

Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Computed Properties of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Wenwu; Wu, Limeng; Li, Deping; Huang, Yaoguang; Liu, Mingyue; Liu, Wenjie; Tian, Caizhi; Liu, Xin; Jiang, Xiaowen; Hu, Xiaolong; Gao, Xudong; Xu, Zihua; Lu, Hongyuan; Zhao, Qingchun published the artcile< Discovery of novel tacrine derivatives as potent antiproliferative agents with CDKs inhibitory property>, Name: 2-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine, the main research area is human colon lung cancer CDK9 antiproliferative anticancer tacrine derivative; AChE; CDK2; CDK9; Cancer therapeutics; Tacrine.

Tacrine was the first approved drug by the FDA for the treatment of Alzheimer′s disease (AD) but was withdrawn from the market due to its dose-dependent hepatotoxicity. Herein, we describe our efforts toward the discovery of a novel series of tacrine derivatives for cancer therapeutics. Intensive structural modifications of tacrine led to the identification of N-(4-{9-[(3S)-3-aminopyrrolidin-1-yl]-5,6,7,8-tetrahydroacridin-2-yl}pyridin-2-yl)cyclopropanecarboxamide hydrochloride ((S)-45, ZLWT-37) as a potent antiproliferative agent (GI50 = 0.029 μM for HCT116). In addition, ZLWT-37 exhibited lower inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) compared to tacrine. The in vitro studies demonstrated that ZLWT-37 could significantly induce apoptosis and arrest the cell cycle in the G2/M phase in HCT116 cells. The in vivo studies revealed that compound ZLWT-37 showed excellent antitumor efficacy in HCT116 xenograft tumor model and favorable pharmacokinetics profiles (F% = 28.70%) as well as low toxicity in the acute toxicity test with a median LD (LD50) of 380.3 mg/kg. Encouragingly, ZLWT-37 had no obvious hepatotoxicity, nephrotoxicity, and hematol. toxicity. Kinase assay suggested that ZLWT-37 possessed potent cyclin-dependent kinase 9 (CDK9) inhibitory activity (IC50 = 0.002 μM) and good selectivity over CDK2 (IC50 = 0.054 μM). Collectively, these findings indicate that compound ZLWT-37 is a promising anti-cancer agent that deserves further preclin. evaluation.

Bioorganic Chemistry published new progress about Antiproliferative agents. 660867-80-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C12H18BNO2, Name: 2-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts