Month: October 2022

Alinezhad, Heshmatollah; Pakzad, Khatereh published the artcile< C-S Cross-coupling reaction using novel and green synthesized CuO nanoparticles assisted by Euphorbia maculata extract>, Recommanded Product: 2-(Phenylthio)ethanol, the main research area is copper oxide nanoparticle green catalyst preparation; aqueous Euphorbia maculata copper sulfate extract green biosynthesis; thioether preparation green chem; thiol aryl halide cross coupling CuO nanoparticle catalyst.

In the present study, biosynthesis of CuO nanoparticles using a rapid, eco-friendly, cost-effective and efficient method was reported employing aqueous Euphorbia maculata extract as mild, renewable and non-toxic reducing and capping agents without adding any surfactants. This biogenic and green method had some benefits compared to conventional phys. and chem. methods. The biosynthesized CuO NP displayed a color change pattern (from sky blue to black) on preparation and presented its resp. broad peak at 365 nm, which was analyzed by UV-vis spectroscopy. Using FT-IR anal., biomols. in E. maculata extract which were responsible for bioreduction activity and synthesized CuO NP, were identified. XRD, EDX and FESEM results confirmed successful synthesis of CuO nanoparticles of 18 nm sizes, with spherical and sponge crystal structure. Catalytic activity of biosynthesized CuO NPs was studied in C-S cross-coupling reaction of thiols with aryl halides. This method had the advantages of high yields, easy work-up, and simple reusability. The recovered CuO NP could be reused four times without any considerable loss of its catalytic activity.

Applied Organometallic Chemistry published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Recommanded Product: 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ansari, Arshad J.; Yadav, Ayushi; Mukherjee, Anirban; Sathish, Elagandhula; Nagesh, Kommu; Singh, Ritesh published the artcile< Metal free amination of congested and functionalized alkyl bromides at room temperature>, SDS of cas: 5344-90-1, the main research area is aryl amine preparation; bromoamide aromatic heteroaromatic amine amination; benzodiazepine preparation.

The authors report a highly facile and unprecedented approach to synthesize congested N-(hetero)aryl amines, e.g., 4-NCC6H4NNHCMe2CONHOBn, en route to α-amino acid amides using α-bromoamides as alkylating agents under mild reaction conditions (room temperature). The involvement of aza-oxyallyl cations as alkylating agents is the hallmark of this reaction. This method was readily adapted for the rapid synthesis of coveted 1,4-benzodiazepine-3,5-diones I [R = R1 = H, MeO, R2 = OBn; R = R1 = R2 = H; R = R1 = MeO, R2 = H; R = H, R1 = Cl, R2 = OBn].

Chemical Communications (Cambridge, United Kingdom) published new progress about Amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, SDS of cas: 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ozturk, Yasin; Gunaydin, Caner; Yalcin, Fatma; Naziroglu, Mustafa; Braidy, Nady published the artcile< Resveratrol enhances apoptotic and oxidant effects of paclitaxel through TRPM2 channel activation in DBTRG glioblastoma cells>, Application of C14H12O3, the main research area is .

Numerous studies have reported a strong association between increased production of reactive oxygen species (ROS) and the pathobiol. of several diseases, and cancer in particular. Therefore, manipulation of cellular oxidative stress levels represents an important therapeutic target. Recently, resveratrol (RESV), a naturally occurring phytochem., has been shown to sensitize several cell lines to the anticancer effects of other chemotherapeutic agents, including paclitaxel (PAX). However, the mol. mechanisms of action of RESV through oxidative sensitive TRPM2 channel activation remain unclear. The aim of this study was to evaluate the effect of combination therapy of RESV and PAX on activation of TRPM2 in DBTRG glioblastoma cells. DBTRG cells were divided into four treatment groups: control, RESV (50 μM), PAX (50 μM), and PAX + RESV for 24 h. Our data shows that markers for apoptosis, mitochondrial membrane depolarization and mitochondrial function, intracellular steady-state ROS levels, caspase 3 activity, TRPM2 c.d., and Ca2+ florescence intensity were significantly increased in DBTRG cells following treatment with PAX and RESV, resp., although cell viability was also decreased by these treatments. These biochem. markers were further increased to favor the anticancer effects of PAX in DBTRG cells in combination with RESV. The PAX and RESV-mediated increase in c.d. and Ca2+ florescence intensity was decreased with a TRPM2 blocker. This suggests that for this combination therapy to have a substantial effect on apoptosis and cell viability, the TRPM2 channel must be stimulated.

Oxidative Medicine and Cellular Longevity published new progress about 501-36-0 . 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, Application of C14H12O3.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kuribara, Takahito; Nakajima, Masaya; Nemoto, Tetsuhiro published the artcile< A visible-light activated secondary phosphine oxide ligand enabling Pd-catalyzed radical cross-couplings>, Application of C4H8O, the main research area is amine allyl methyl carbonate palladium photochem allylation; bromoalkane aryl alkene palladium photochem diastereoselective Heck reaction; aryl halide pyrrole palladium photochem radical cross coupling; haloarene palladium photochem dehalogenative hydrogenation.

A secondary phosphine oxide ligand bearing a visible-light sensitization moiety and apply it to Pd-catalyzed radical cross-coupling reactions was reported. The tautomeric phosphinous acid coordinates to palladium in-situ, allowing for pseudo-intramol. single-electron transfer between the ligand and palladium. Mol. design of the metal complexes aided by time-dependent d. functional theory calculations enables the involvement of allyl radicals from π-allyl palladium(II) complexes, and alkyl and aryl radicals from the corresponding halides and palladium(0) complex. This complex enables radical cross-couplings by ligand-to-Pd(II) and Pd(0)-to-ligand single-electron transfer under visible-light irradiation

Nature Communications published new progress about Allylation (photochem.). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Application of C4H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Do, Thi Bich Thuy; Tran, Bao Khanh; Tran, Thi Van Thi; Le, Trung Hieu; Cnockaert, Margo; Vandamme, Peter; Nguyen, Thi Hong Chuong; Nguyen, Chinh Chien; Hong, Sung Hyun; Kim, Soo Young; Van Le, Quyet published the artcile< Decoding the Capability of Lactobacillus plantarum W1 Isolated from Soybean Whey in Producing an Exopolysaccharide>, Safety of (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol, the main research area is exopolysaccharide Lactobacillus soybean whey.

This study aims at producing exopolysaccharides (EPS) from a lactic acid bacterial strain. The soybean whey-isolated Lactobacillus plantarum W1 (EPS-W1), which belongs to genus Lactobacillus, is identified using the phenylalanyl-tRNA sequencing method. Of all the examined strains, R-49778 (as numbered by BCCM/LMG Bacteria Collection, Ghent University, Belgium) showed the highest capability of producing exopolysaccharides. Structural characterization revealed a novel exopolysaccharide consisting of repeating units of →6)-D-Glcp-(1→; →3)-D-Manp-(1→; →3)-D-Glcp-(1→ and a branch of →6)-D-Manp-(1→; →2)-D-Glcp-(1→. This discovery opens up avenues for the production of EPS for food industries, functional foods, and biomedical applications.

ACS Omega published new progress about Exopolysaccharides Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Safety of (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dong, Zhe; MacMillan, David W. C. published the artcile< Metallaphotoredox-enabled deoxygenative arylation of alcohols>, Name: But-3-en-1-ol, the main research area is alc aryl halide deoxygenative arylation metallaphotoredox.

Metal-catalyzed cross-couplings are a mainstay of organic synthesis and are widely used for the formation of C-C bonds, particularly in the production of unsaturated scaffolds1. However, alkyl cross-couplings using native sp3-hybridized functional groups such as alcs. remain relatively underdeveloped2. In particular, a robust and general method for the direct deoxygenative coupling of alcs. would have major implications for the field of organic synthesis. A general method for the direct deoxygenative cross-coupling of free alcs. must overcome several challenges, most notably the in situ cleavage of strong C-O bonds3, but would allow access to the vast collection of com. available, structurally diverse alcs. as coupling partners4. Authors report herein a metallaphotoredox-based cross-coupling platform in which free alcs. are activated in situ by N-heterocyclic carbene salts for carbon-carbon bond formation with aryl halide coupling partners. This method is mild, robust, selective and most importantly, capable of accommodating a wide range of primary, secondary and tertiary alcs. as well as pharmaceutically relevant aryl and heteroaryl bromides and chlorides. The power of the transformation has been demonstrated in a number of complex settings, including the late-stage functionalization of Taxol and a modular synthesis of Januvia, an antidiabetic medication. This technol. represents a general strategy for the merger of in situ alc. activation with transition metal catalysis.

Nature (London, United Kingdom) published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Name: But-3-en-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hirai, Kenji; Ishikawa, Hiroto; Takahashi, Yasufumi; Hutchison, James A.; Uji-i, Hiroshi published the artcile< Autotuning of Vibrational Strong Coupling for Site-Selective Reactions>, Category: alcohols-buliding-blocks, the main research area is benzaldehyde acetophenone Prins reaction IR spectra; Fabry-Perot cavity; infrared spectroscopy; piezoelectric actuators; prins reactions; vibrational strong coupling.

Site-selective chem. opens new paths for the synthesis of technol. important mols. When a reactant is placed inside a Fabry-Perot (FP) cavity, energy exchange between mol. vibrations and resonant cavity photons results in vibrational strong coupling (VSC). VSC has recently been implicated in modified chem. reactivity at specific reactive sites. However, as a reaction proceeds inside an FP cavity, the refractive index of the reaction solution changes, detuning the cavity mode away from the vibrational mode and weakening the VSC effect. Here we overcome this issue, developing actuatable FP cavities to allow automated tuning of cavity mode energy to maintain maximized VSC during a reaction. As an example, the site-selective reaction of the aldehyde over the ketone in 4-acetylbenzaldehyde is achieved by automated cavity tuning to maintain optimal VSC of the ketone carbonyl stretch during the reaction. A nearly 50% improvement in site-selective reactivity is observed compared to an FP cavity with static mirrors, demonstrating the utility of actuatable FP cavities as microreactors for organic chem.

Chemistry – A European Journal published new progress about Activation enthalpy. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Polonca, Stefanic published the artcile< Environment Shapes the Intra-species Diversity of Bacillus subtilis Isolates>, COA of Formula: C6H10O8, the main research area is bacillus genetic relatedness diversity environmental selection pressure evolution; Bacillus; Biofilm morphology; Biolog; Diversity; Soil microscale.

Cosmopolitan bacteria are those that are found practically everywhere in the world. One of them is Bacillus subtilis, which can travel around the world through dust storms rising from various deserts. Upon landing, bacterial survival is determined by the ability to adjust to the heterogonous environments and bacteria isolated from extremely different environments, such as desert and riverbank soil, are expected to be less related due to the environmental pressure of each region. However, little is known about the influence of soil and habitat on B. subtilis evolution. Here, we show that desert and riverbank B. subtilis strains differ in genetic relatedness and physiol. traits, such as biofilm morphol. and utilization of carbon sources. Desert strains showed more diversity at the genetic level and were able to utilize more carbon sources than riverbank strains which were highly genetically conserved. Biofilm morphologies of desert and riverbank strains generally segregated and both groups formed different morphol. clusters despite the astonishing diversity observed among riverbank strains. We also show that relatedness of B. subtilis strains does not decrease with distance inside the same habitat, which, together with diversity data implies that the difference in environmental selection pressures plays a fundamental role in the evolution of this species.

Microbial Ecology published new progress about Air. 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, COA of Formula: C6H10O8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bharate, Sandip B.; Khan, Shabana I.; Tekwani, Babu L.; Jacob, Melissa; Khan, Ikhlas A.; Singh, Inder Pal published the artcile< S-Euglobals: Biomimetic synthesis, antileishmanial, antimalarial, and antimicrobial activities>, SDS of cas: 4396-13-8, the main research area is euglobal analog preparation antileishmanial antimalarial antimicrobial structure.

Several new euglobal analogs (named as S-euglobals) were synthesized from phloroglucinol using a biomimetic three-component reaction involving Knoevenagel condensation and Diels-Alder cycloaddition with a monoterpene. Newly synthesized euglobal analogs involve monoterpenes that have not yet been encountered in natural euglobals. S-Euglobals along with previously synthesized robustadial A and B were evaluated for in vitro antileishmanial, antimalarial, antimicrobial, and cytotoxic activities. Out of sixteen analogs prepared, nine analogs were found to exhibit antileishmanial activity against Leishmania donovani promastigotes. A 2-carene-derived S-euglobal was the most potent antileishmanial with IC50 of 2.4 μg/mL and IC90 of 8 μg/mL, followed by a second 2-carene-derived S-euglobal and a nopol-derived S-euglobal (IC50 5.5 and 9.5 μg/mL). Antileishmanial activity of robustadial A (5) and B (6) was moderate with IC50 of 20 and 16 μg/mL, resp. Robustadial A and B and a 2-carene-derived S-euglobal exhibited weak antimalarial activity against Plasmodium falciparum (IC50 of 2.7-4.76 μg/mL). Few of the euglobal analogs showed antibacterial activity against methicillin-resistant Staphylococcus aureus. Amongst these, a nopol-derived S-euglobal was the most potent with IC50 of 1.0 μg/mL and MIC of 5.0 μg/mL. Most of the compounds were not cytotoxic up to 25 μg/mL in a panel of cell lines consisting of both cancer (SK-MEL, KB, BT-549, and SK-OV-3) as well as non-cancer kidney (Vero and LLC-PK11) cells.

Bioorganic & Medicinal Chemistry published new progress about Antimalarials. 4396-13-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H6O5, SDS of cas: 4396-13-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts