Month: October 2022

Das, Siuli; Sinha, Suman; Samanta, Deepannita; Mondal, Rakesh; Chakraborty, Gargi; Brandao, Paula; Paul, Nanda D. published the artcile< Metal-Ligand Cooperative Approach To Achieve Dehydrogenative Functionalization of Alcohols to Quinolines and Quinazolin-4(3H)-ones under Mild Aerobic Conditions>, Category: alcohols-buliding-blocks, the main research area is quinoline preparation cooperative metal ligand catalyzed dehydrogenative functionalization alc; quinazolinone preparation cooperative metal ligand catalyzed dehydrogenative functionalization alc.

A simple metal-ligand cooperative approach for the dehydrogenative functionalization of alcs. to various substituted quinolines and quinazolin-4(3H)-ones under relatively mild reaction conditions (≤90 °C) is reported. Simple and easy-to-prepare air-stable Cu(II) complexes featuring redox-active azo-aromatic scaffolds, 2-arylazo-(1,10-phenanthroline) (L1,2), are used as catalyst. A wide variety of substituted quinolines and quinazolin-4(3H)-ones were synthesized in moderate to good isolated yields via dehydrogenative coupling reactions of various inexpensive and easily available starting materials under aerobic conditions. A few control experiments and deuterium labeling studies were carried out to understand the mechanism of the dehydrogenative coupling reactions, which indicate that both copper and the coordinated azo-aromatic ligand participate in a cooperative manner during the catalytic cycle.

Journal of Organic Chemistry published new progress about Acetophenones Role: RCT (Reactant), RACT (Reactant or Reagent). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Iles, Bruno; Ribeiro de Sa Guimaraes Noleto, Isabela; Dourado, Flaviane Franca; de Oliveira Silva Ribeiro, Fabio; de Araujo, Alyne Rodrigues; de Oliveira, Taiane Maria; Souza, Jessica Maria Teles; Barros, Ayslan Batista; Sousa, Gabrielle Costa; de Jesus Oliveira, Antonia Carla; da Silva Martins, Conceicao; de Oliveira Viana Veras, Mariana; de Carvalho Leitao, Renata Ferreira; de Souza de Almeida Leite, Jose Roberto; da Silva, Durcilene Alves; Medeiros, Jand Venes Rolim published the artcile< Alendronate sodium-polymeric nanoparticles display low toxicity in gastric mucosal of rats and Ofcol II cells>, Synthetic Route of 492-62-6, the main research area is alendronate sodium polymeric nanoparticle gastric toxicity osteotoxicity; Alendronate; Cashew gum; Gastric lesion; Polymeric nanoparticle; Red Angico gum.

The use of bisphosphonates constitutes the gold-standard therapy for the control and treatment of bone diseases. However, its long-term use may lead to gastric problems, which limits the treatment. Thus, this study aimed to formulate a nanostructured system with biodegradable polymers for the controlled release of alendronate sodium. The nanoparticles were characterized, and its gastric toxicity was investigated in rats. The synthesis process proved to be effective for encapsulating alendronate sodium, exhibiting nanoparticles with an average size of 51.02 nm and 98.5% of alendronate sodium incorporation. The release tests demonstrated a controlled release of the drug in 420 min, while the morphol. analyzes showed spherical shapes and no apparent roughness. The biol. tests demonstrated that the alendronate sodium nanoformulation reversed the gastric lesions, maintaining the normal levels of malondialdehyde and myeloperoxidase. Also, the encapsulated alendronate sodium showed no toxicity in murine osteoblastic cells, even at high concentrations

NanoImpact published new progress about Anacardium occidentale. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Synthetic Route of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mantzaris, Gerassimos J.; Sfakianakis, Michael; Archavlis, Emmanuel; Petraki, Kalliopi; Christidou, Angeliki; Karagiannidis, Alexandros; Triadaphyllou, George published the artcile< A prospective randomized observer-blind 2-year trial of azathioprine monotherapy versus azathioprine and olsalazine for the maintenance of remission of steroid-dependent ulcerative colitis>, Reference of 6054-98-4, the main research area is azathioprine olsalazine ulcerative colitis.

The aim of this prospective study was to assess whether the coadministration of azathioprine (AZA) and olsalazine is superior to AZA monotherapy in maintaining remission of steroid-dependent ulcerative colitis (UC). Patients with steroid-dependent UC in remission were randomized to receive AZA alone (2.2 mg/kg) or in combination with olsalazine (0.5 g tid). Remission was defined as steroid withdrawal, an Ulcerative Colitis Clin. Activity Index (UCCAI) score of <2, an Ulcerative Colitis Disease Activity Index (UCDAI) score of 0, and a neg. colonoscopy and histol. Patients were followed in the outpatient clinic every month for 2 yr. The study protocol included (1) monthly clin. examination, assessment of UCCAI, hematol. and biochem. tests, and compliance with treatment; (2) a sigmoidoscopy and completion of inflammatory bowel disease quality-of-life questionnaire (IBD-Q) and UCDAI every 3 mo; and (3) total colonoscopy with biopsies at the end of the first and second year of the trial. Seventy patients were randomized to receive AZA alone (n = 34) or with olsalazine (n = 36). Three patients in each group developed side effects or could not comply with treatment and were withdrawn from the study. Three patients receiving AZA relapsed after the first year of the study and three after the second year of the study (19%). In the combination therapy group four patients relapsed after the first year of study and two after the second year of the study (18%). Relapse rates were not significant whether analyzed by intention-to-treat or per protocol. There were no significant differences between groups in time to relapse or discontinuation of treatment, UCCAI, UCDAI, or IBD-Q scores. However, the number of adverse events and the cost of treatment were significantly higher, whereas compliance with treatment was poorer in the combination therapy. Patients with steroid-dependent UC successfully maintained in remission on AZA are not in need of 5-aminosalicylic acid compounds American Journal of Gastroenterology published new progress about Combination chemotherapy. 6054-98-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H8N2Na2O6, Reference of 6054-98-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chi, Xun; Bensinger, Steven J. published the artcile< (Sterol)ized Immunity: Could PI3K/AKT3 Be the Answer?>, Formula: C27H44O, the main research area is review PI3K AKT3 signaling cholesterol biosynthesis innate immune response.

A review. Type I interferons (IFNs) can reprogram the cholesterol biosynthetic pathway to facilitate innate immune responses. In this issue of Immunity, Xiao et al. (2020) reveal that type I IFN signaling and 7-dehydrocholesterol (7-DHC) accumulation form a pos. feedback loop to amplify innate immune responses to control viral infections by activating AKT3.

Immunity published new progress about Innate immunity. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, Formula: C27H44O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wei, Duo; Dorcet, Vincent; Darcel, Christophe; Sortais, Jean-Baptiste published the artcile< Synthesis of Quinolines Through Acceptorless Dehydrogenative Coupling Catalyzed by Rhenium PN(H)P Complexes>, Recommanded Product: (2-Aminophenyl)methanol, the main research area is quinoline preparation green chem; aryl alc hydroxymethyl aniline dehydrogenative coupling rhenium catalyst; ketone hydroxymethyl aniline dehydrogenative coupling rhenium catalyst; nitrile hydroxymethyl aniline dehydrogenative coupling rhenium catalyst; annulation; dehydrogenative coupling; hydrogen borrowing; quinoline; rhenium.

The practical and sustainable synthesis of substituted quinolines I (R1 = C6H5, cyclopropyl, NH2, etc.; R2 = H, C6H5, CH3, etc.; R1R2 = (CH2)4, (CH2)6) and 5,6-dihydro-benzo[c]acridine was achieved through the annulation of 2-aminobenzyl alc. with various secondary alcs. R1CH(OH)CH2R2, ketones R1C(O)CH2R2, phenylacetaldehyde, or nitriles R2CH2CN, under hydrogen-borrowing conditions. Under the catalysis of well-defined rhenium complexes bearing tridentate diphosphinoamino ligands, the reaction proceeded efficiently (31 examples were isolated with yields up to 96%) for affording a variety of quinoline derivatives I and 5,6-dihydro-benzo[c]acridine.

ChemSusChem published new progress about Aromatic alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Recommanded Product: (2-Aminophenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kitowski, Annabel; Bernardes, Goncalo J. L. published the artcile< A Sweet Galactose Transfer: Metabolic Oligosaccharide Engineering as a Tool To Study Glycans in Plasmodium Infection>, SDS of cas: 4064-06-6, the main research area is GLUT1 galactose O glycosylation plasmodium infection malaria; GLUT1 transporters; bioorthogonal chemistry; carbohydrates; inverse electron-demand Diels-Alder; malaria.

The introduction of chem. reporter groups into glycan structures through metabolic oligosaccharide engineering followed by bio-orthogonal ligation is an important tool to study glycosylation. We show the incorporation of synthetic galactose derivatives that bear terminal alkene groups in hepatic cells, with and without infection by Plasmodium berghei parasites, the causative agent of malaria. Addnl., we demonstrated the contribution of GLUT1 to the transport of these galactose derivatives, and observed a consistent increase in the uptake of these compounds going from naive to P. berghei-infected cells. Finally, we used MOE to study the interplay between Plasmodium parasites and their mosquito hosts, to reveal a possible transfer of galactose building blocks from the latter to the former. This strategy has the potential to provide new insights into Plasmodium glycobiol. as well as for the identification and characterization of key glycan structures for further vaccine development.

ChemBioChem published new progress about Cell culture. 4064-06-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C12H20O6, SDS of cas: 4064-06-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ren, Xiaoxiao; Gao, Xing; Min, Qiao-Qiao; Zhang, Shu; Zhang, Xingang published the artcile< (Fluoro)alkylation of alkenes promoted by photolysis of alkylzirconocenes>, Electric Literature of 627-27-0, the main research area is difluoroalkyl compound preparation; alkene alkylzirconocene preparation photochem fluoroalkylation.

An unprecedented example of alkylzirconocenes Cp2ZrCl(CH2)2R (R = Bn, dimethyl(phenyl)silyl, trimethylsilyl, etc.) promoted difluoroalkylation of alkyl- and silyl-alkenes RCH=CH2 with a variety of unactivated difluoroalkyl iodides and bromides R1C(F2)X (R1 = [(ethanesulfonyl)oxy]methyl, (morpholin-4-yl)carbonyl, 3-[(4-chlorophenyl)carbonyloxy]propyl, etc.; X = I, Br) under the irradiation of visible light without a catalyst. The resulting difluoroalkylated compounds RC(F2)R1 can serve as versatile synthons in organic synthesis. The reaction can also be applied to activated difluoroalkyl, trifluoromethyl, perfluoroalkyl, monofluoroalkyl, and nonfluorinated alkyl halides, providing a general method to controllably access fluorinated compounds Preliminary mechanistic studies reveal that a single electron transfer (SET) pathway induced by a Zr(III) species is involved in the reaction, in which the Zr(III) species is generated by the photolysis of alkylzirconocene with blue light.

Chemical Science published new progress about Alkenes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Electric Literature of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shaito, Abdullah; Posadino, Anna Maria; Younes, Nadin; Hasan, Hiba; Halabi, Sarah; Alhababi, Dalal; Al-Mohannadi, Anjud; Abdel-Rahman, Wael M.; Eid, Ali H.; Nasrallah, Gheyath K.; Pintus, Gianfranco published the artcile< Potential adverse effects of resveratrol a literature review>, Synthetic Route of 501-36-0 , the main research area is review resveratrol toxicity bioavailability stilbenoid; anticancer; antioxidant effects; biphasic; oxidative DNA damage; pro-oxidant effects; reactive oxygen species (ROS); resveratrol.

A review. Due to its health benefits, resveratrol (RE) is one of the most researched natural polyphenols. Resveratrol’s health benefits were first highlighted in the early 1990s in the French paradox study, which opened extensive research activity into this compound Ever since, several pharmacol. activities including antioxidant, anti-aging, anti-inflammatory, anti-cancerous, anti-diabetic, cardioprotective, and neuroprotective properties, were attributed to RE. However, results from the available human clin. trials were controversial concerning the protective effects of RE against diseases and their sequelae. The reason for these conflicting findings is varied but differences in the characteristics of the enrolled patients, RE doses used, and duration of RE supplementation were proposed, at least in part, as possible causes. In particular, the optimal RE dosage capable of maximizing its health benefits without raising toxicity issues remains an area of extensive research. In this context, while there is a consistent body of literature on the protective effects of RE against diseases, there are relatively few reports investigating its possible toxicity. Indeed, toxicity and adverse effects were reported following consumption of RE; therefore, extensive future studies on the long-term effects, as well as the in vivo adverse effects, of RE supplementation in humans are needed. Furthermore, data on the interactions of RE when combined with other therapies are still lacking, as well as results related to its absorption and bioavailability in the human body. In this review, we collect and summarize the available literature about RE toxicity and side effects. In this process, we analyze in vitro and in vivo studies that have addressed this stilbenoid. These studies suggest that RE still has an unexplored side. Finally, we discuss the new delivery methods that are being employed to overcome the low bioavailability of RE.

International Journal of Molecular Sciences published new progress about Bioavailability. 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, Synthetic Route of 501-36-0 .

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shakhmatov, Evgeny G.; Makarova, Elena N.; Belyy, Vladimir A. published the artcile< Structural studies of biologically active pectin-containing polysaccharides of pomegranate Punica granatum>, SDS of cas: 3458-28-4, the main research area is Punica fruit feel membrane pectin polysaccharide structural property; Arabinan; NMR; Pectic polysaccharides; Pomegranate wastes; Punica granatum; Structural analysis.

The polysaccharide PGW was isolated from peels and membranes of fruits of pomegranate P. granatum by hot water extraction The methods of ion exchange chromatog., partial acid hydrolysis, enzymic hydrolysis and NMR spectroscopy were employed to establish the major elements of its structure. It was shown that this polysaccharide contained polymers with different structures, the main components among which were pectic polysaccharides, represented mainly by highly methyl-esterified and lowly acetylated 1,4-α-D-galactopyranosyluronan and a minor amount of partially 2-O- and/or 3-O-acetylated RG-I. The side carbohydrate chains of the branched region of RG-I were mainly represented by terminal, 5-O-, 3-O-, 2,5-di-O-, 3,5-di-O- and 2,3,5-tri-O-substituted α-L-Araf residues indicating the presence of branched 1,5-α-L-arabinan and minor regions of 1,4-β-D-galactan or arabinogalactan type I. The degree of methylation of the isolated pectins varied depending on the method of treatment. As a result, peels and membranes of pomegranate fruits can be recommended as a source of highly and lowly methyl-esterified pectic polysaccharides.

International Journal of Biological Macromolecules published new progress about Carbohydrates Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, SDS of cas: 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ji, Hai-yu; Chen, Pei; Yu, Juan; Feng, Ying-ying; Liu, An-jun published the artcile< Effects of Heat Treatment on the Structural Characteristics and Antitumor Activity of Polysaccharides from Grifola frondosa>, Recommanded Product: (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Grifola polysaccharide antitumor agent heat treatment hepatocellular carcinoma; Antitumor; Heat treatment; Polysaccharides from Grifola frondosa; Structure.

This study investigated the effects of heat treatment on structural characteristics and in vitro antitumor activity of polysaccharides from Grifola frondosa. GFP-4 (extracted at 4°C), GFP-4-80 (80°C treatment on GFP-4) and GFP-80 (extracted at 80°C) were prepared, and the chem. composition anal. showed that their total sugar contents were all higher than 90%, high-performance gel-permeation chromatog. (HPGPC), ion chromatog. (IC) and Fourier-transform IR spectroscopy (FTIR) results demonstrated that GFP-4 were degraded and denatured after 80°C heat treatment, MTT and JC-1 results showed that GFP-4 exhibited higher inhibitory effects on HepG2 cells in vitro than GFP-4-80 and GFP-80. Our study suggested that heat treatment at 80°C on polysaccharides from Grifola frondosa would destroy their structure and attenuate their antitumor effects.

Applied Biochemistry and Biotechnology published new progress about Antitumor agents. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Recommanded Product: (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts