Tag: M.W=100-150

Hyodo, Yuki published the artcileAssemblies of 1,4-Bis(diarylamino)naphthalenes and Aromatic Amphiphiles: Highly Reducing Photoredox Catalysis in Water, COA of Formula: C8H8O2, the publication is Synlett (2022), 33(12), 1184-1188, database is CAplus.

Host-guest assemblies of a designed 1,4-bis(diarylamino)naphthalene and V-shaped aromatic amphiphiles consisting of two pentamethylbenzene moieties bridged by an m-phenylene unit bearing two hydrophilic side chains emerged as highly reducing photoredox catalysis systems in water. An efficient demethoxylative hydrogen transfer of Weinreb amides had been developed. The present supramol. strategy permitted facile tuning of visible-light photoredox catalysis in water.

Synlett published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, COA of Formula: C8H8O2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sueki, Shunsuke published the artcileSynthesis of 1,4-Dihydropyridines and Their Fluorescence Properties, Application of Propane-1,3-diamine dihydrochloride, the publication is European Journal of Organic Chemistry (2014), 2014(24), 5281-5301, database is CAplus.

We have successfully synthesized 3,4,5-substituted 1,4-dihydropyridines (1,4-DHPs) from amine hydrochloride salts, aldehydes, and acetals in good yields without the addition of a catalyst. The synthesized 1,4-DHPs exhibit various wavelengths of fluorescence, which could be tuned by changing the substituents at the 3- and 5-positions of the 1,4-DHPs.

European Journal of Organic Chemistry published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C10H11NO4, Application of Propane-1,3-diamine dihydrochloride.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mori, Sadao published the artcileThin-layer chromatography of diamines, dicarboxylic acids, and ¦Ø-amino acids, Name: Propane-1,3-diamine dihydrochloride, the publication is Journal of Chromatography (1970), 47(2), 224-31, database is CAplus.

A method, which involves thin-layer chromatog. and densitometry, was developed for the quant. and qual. determination of the diamine dihydrochlorides, dicarboxylic acids, and ¦Ø-amino acid hydrochlorides recovered from acid hydrolyzed copolyamides prepared from diamine-diacid and (or) ¦Ø-amino acids (or their lactams). Two different solvent systems consisting of PhOH-BuOH-HCO2H-H2O and PhOH-HCO2H-H2O were used. The qual. anal. of the 3 homologous series was attained on the same chromatogram. For quant. determination the method has an average relative error of ¡À5%. A linear relation between the R’m values [R’m = log (1/1.1 Rf -1 )] and the solute C numbers was observed. The deviation from linearity for the longer chain compounds might be caused by a gradient effect. The linearity between Rf values and the number of C atoms depended upon the exptl. conditions.

Journal of Chromatography published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, Name: Propane-1,3-diamine dihydrochloride.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Lu, Peng published the artcileNMR and HPLC profiling of bee pollen products from different countries, Synthetic Route of 63-68-3, the publication is Food Chemistry: Molecular Sciences (2022), 100119, database is CAplus and MEDLINE.

Bee pollen, a beehive product collected from flowers by honeybees, contains over 250 biol. substances, and has attracted increasing attention as a functional food. However, com. bee pollen products are often multifloral, and samples from different countries vary significantly. There is no universal standard for objective quality assessment of bee pollen based on its chem. composition Here, we report metabolomic anal. of 11 bee pollen samples from Spain, China, and Australia for quality control. The characteristics of the samples depend on the sucrose, nucleoside, amino acid, and flavanol concentrations Bee pollen samples from Spain and Australia had higher sucrose and adenosine concentrations, whereas those from China had higher trigonelline, uridine, and cytidine concentrations Interestingly, acetic acid was only detected in samples from China. These components can be used to identify the country of origin. The obtained profiles of the samples will contribute to universal standard development for bee pollen products.

Food Chemistry: Molecular Sciences published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Synthetic Route of 63-68-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mikaeloff, Flora published the artcileTrans cohort metabolic reprogramming towards glutaminolysis in long-term successfully treated HIV-infection, Application In Synthesis of 63-68-3, the publication is Communications Biology (2022), 5(1), 27, database is CAplus and MEDLINE.

Despite successful combination antiretroviral therapy (cART), persistent low-grade immune activation together with inflammation and toxic antiretroviral drugs can lead to long-lasting metabolic flexibility and adaptation in people living with HIV (PLWH). Our study investigated alterations in the plasma metabolic profiles by comparing PLWH on long-term cART(>5 years) and matched HIV-neg. controls (HC) in two cohorts from low- and middle-income countries (LMIC), Cameroon, and India, resp., to understand the system-level dysregulation in HIV-infection. Using untargeted and targeted LC-MS/MS-based metabolic profiling and applying advanced system biol. methods, an altered amino acid metabolism, more specifically to glutaminolysis in PLWH than HC were reported. A significantly lower level of neurosteroids was observed in both cohorts and could potentiate neurol. impairments in PLWH. Further, modulation of cellular glutaminolysis promoted increased cell death and latency reversal in pre-monocytic HIV-1 latent cell model U1, which may be essential for the clearance of the inducible reservoir in HIV-integrated cells.

Communications Biology published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Application In Synthesis of 63-68-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Guvvala, Vinodh published the artcileDevelopment of a Novel and Scalable Process for the Synthesis of a Key Cangrelor Intermediate, Related Products of catalysis-chemistry, the publication is Organic Preparations and Procedures International (2019), 51(6), 530-536, database is CAplus.

An alternative synthetic route to the cangrelor key synthon, I, was developed with >99.5% purity without addnl. purifications. This improved method involves five steps starting from readily and cheaply available xanthine. Our process is scalable, cost effective, with simplified reaction workup, and avoids the use of costly metal catalysts or chromatog. Of note, this may be a com. viable large scale synthesis compared to previous methods.

Organic Preparations and Procedures International published new progress about 6950-53-4. 6950-53-4 belongs to catalysis-chemistry, auxiliary class Salt,sulfides,Amine,Aliphatic hydrocarbon chain, name is 2-(Methylthio)ethanamine hydrochloride, and the molecular formula is C3H10ClNS, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Hojo, Yasuji published the artcileSpecific ability of sulfur-ligands to remove mercury-203-labeled organomercury from hemoglobin in comparison with nitrogen-ligands, SDS of cas: 10517-44-9, the publication is Radioisotopes (1975), 24(10), 684-8, database is CAplus.

Organomercurials (chloromerodrin [62-37-3], methylmercuric chloride [115-09-3], ethylmercuric chloride [107-27-7] and phenylmercuric acetate [62-38-4]) bound to sulfhydryl groups of Hb were removed by chelating agents including sulfur-ligands (penicillamine [52-67-5], glutathione [70-18-8]) and nitrogen-ligands (EDTA [60-00-4], glycine [56-40-6], polyethylenediamines). The effect of sulfur-ligands was higher and more sp. than that of nitrogen-ligands. A linear correlation was observed between the extent of organomercurial removal and the stability constant (log K1) of the organomercury complex with sulfur- and nitrogen-ligands. At a fixed value of log K1, sulfur-ligands were more effective than nitrogen-ligands. With the exception of chloromeredin, a linear correlation was also observed between the average percentage of removal and the Taft’s polar substituent constant for the organic moiety of the metal. The average removal percentage by sulfur-ligands increased in the order: ethylmercury > methylmercury > phenylmercury, whereas that by nitrogen-ligands was similar.

Radioisotopes published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, SDS of cas: 10517-44-9.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Ahmadi, Saba published the artcileThe landscape of receptor-mediated precision cancer combination therapy via a single-cell perspective, Recommanded Product: (S)-2-Amino-4-(methylthio)butanoic acid, the publication is Nature Communications (2022), 13(1), 1613, database is CAplus and MEDLINE.

Mining a large cohort of single-cell transcriptomics data, here we employ combinatorial optimization techniques to chart the landscape of optimal combination therapies in cancer. We assume that each individual therapy can target any one of 1269 genes encoding cell surface receptors, which may be targets of CAR-T, conjugated antibodies or coated nanoparticle therapies. We find that in most cancer types, personalized combinations composed of at most four targets are then sufficient for killing at least 80% of tumor cells while sparing at least 90% of nontumor cells in the tumor microenvironment. However, as more stringent and selective killing is required, the number of targets needed rises rapidly. Emerging individual targets include PTPRZ1 for brain and head and neck cancers and EGFR in multiple tumor types. In sum, this study provides a computational estimate of the identity and number of targets needed in combination to target cancers selectively and precisely.

Nature Communications published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Recommanded Product: (S)-2-Amino-4-(methylthio)butanoic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Thoke, Mahesh Bhagwan published the artcileUnimolecular cooperative metallaphotocatalysis with conjugately bridged Ir-Ni complexes and its applications in organic coupling reactions, Safety of 2-Methylbenzoic acid, the publication is Organic Chemistry Frontiers (2022), 9(7), 1797-1807, database is CAplus.

Recent advances successfully upgraded the unique cooperative partnership between two distinct metals in photocatalysis. Herein we report the design, synthesis and comprehensive study of a series of heteroleptic Ir(III) complexes with a pendant binding site for nickel. The neutral Ir¡¤L^pytz complexes are apt to generate a novel unimol. Ir-Ni bimetallic system in situ during photocatalytic organic transformations where the pyridyl triazole ligand (L^pytz) acts as the conjugated bridge between Ir and Ni metal centers. A comparative study revealed that the bimetallic unimol. system with a conjugated linker is a convenient alternative to a bimol. system. UV-visible and photoluminescence quenching studies showed the importance of the conjugated bridging ligand to vectorial transfer of electrons from the photosensitizer unit to the reaction site. All novel Ir¡¤L^pytz complexes were evaluated in three challenging, mechanistically distinct photoinduced cross-coupling reactions (C-O, C-S and C-N) to demonstrate the enormous potential of a conjugately bridged Ir-Ni catalytic system, thus representing an alternative unimol. bimetallic strategy for photocatalytic Ni mediated cross-coupling reactions.

Organic Chemistry Frontiers published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C6H6N2O, Safety of 2-Methylbenzoic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Yang, Yi published the artcileMetagenomic and metatranscriptomic analyses reveal minor-yet-crucial roles of gut microbiome in deep-sea hydrothermal vent snail, Related Products of catalysis-chemistry, the publication is Animal Microbiome (2022), 4(1), 3, database is CAplus and MEDLINE.

Marine animals often exhibit complex symbiotic relationship with gut microbes to attain better use of the available resources. Many animals endemic to deep-sea chemosynthetic ecosystems host chemoautotrophic bacteria endocellularly, and they are thought to rely entirely on these symbionts for energy and nutrition. Numerous investigations have been conducted on the interdependence between these animal hosts and their chemoautotrophic symbionts. The provannid snail Alviniconcha marisindica from the Indian Ocean hydrothermal vent fields hosts a Campylobacterial endosymbiont in its gill. Unlike many other chemosymbiotic animals, the gut of A. marisindica is reduced but remains functional; yet the contribution of gut microbiomes and their interactions with the host remain poorly characterised. Metagenomic and metatranscriptomic analyses showed that the gut microbiome of A. marisindica plays key nutritional and metabolic roles. The composition and relative abundance of gut microbiota of A. marisindica were different from those of snails that do not depend on endosymbiosis. The relative abundance of microbial taxa was similar amongst three individuals of A. marisindica with significant inter-taxa correlations. These correlations suggest the potential for interactions between taxa that may influence community assembly and stability. Functional profiles of the gut microbiome revealed thousands of addnl. genes that assist in the use of vent-supplied inorganic compounds (autotrophic energy source), digest host-ingested organics (carbon source), and recycle the metabolic waste of the host. In addition, members of five taxonomic classes have the potential to form slime capsules to protect themselves from the host immune system, thereby contributing to homeostasis. Gut microbial ecol. and its interplay with the host thus contribute to the nutritional and metabolic demands of A. marisindica. The findings advance the understanding of how deep-sea chemosymbiotic animals use available resources through contributions from gut microbiota. Gut microbiota may be critical in the survival of invertebrate hosts with autotrophic endosymbionts in extreme environments.

Animal Microbiome published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C6H3ClFNO2, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia