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Temporal development of sesquiterpene hydrocarbon profiles of different grape varieties during ripening

submitted by GaiIsai 1 day ago

To investigate the profiles of sesquiterpene hydrocarbons in grape berries at different developmental stages several cultivars of Vitis vinifera (Gewürztraminer, Riesling, Yellow Muscat, Shiraz, L...

1 dig(s) Dig it Bury Topic: Organics

Additivity of current density patterns in altan-molecules

submitted by jano 1 day ago

Four molecules of the recently introduced class of altan-molecules have been studied. They are the altan homologues of naphtalene, pyrene, pyracylene, and kekulene. Their optimized geometries are b...

1 dig(s) Dig it Bury Topic: Organics

Glycerol catalytic cyclocondensation with ethanediamine to pyrazinyl compounds over the modified SiO2-Al2O3

submitted by ozodfolloh 1 day ago

The Fe, Zn, and Mn-modified SiO2-Al2O3 catalysts for the glycerol vapor-phase cyclocondensation with ethanediamine (ED) to 2-pyrazinemethanol (2-PMol) and 2-methylpyrazine (2-MP) in a fixed-bed sys...

1 dig(s) Dig it Bury Topic: Organics

Chaetoglobosin Vb from Endophytic Chaetomium Globosum: Absolute Configuration of Chaetoglobosins

submitted by VictElli 1 day ago

One new cytochalasan alkaloid, chaetoglobosin Vb (1), together with two structurally related known compounds, chaetoglobosin V and chaetoglobosin G , was isolated from the ethyl acetate extract of ...

1 dig(s) Dig it Bury Topic: Organics

Sequence-dependent backbone dynamics of a viral fusogen transmembrane helix

submitted by swenno 2 days ago

The transmembrane domains of membrane fusogenic proteins are known to contribute to lipid bilayer mixing as indicated by mutational studies and functional reconstitution of peptide mimics. Here, we...

1 dig(s) Dig it Bury Topic: Organics

Sensing the messenger: The diverse ways that bacteria signal through c-di-GMP

submitted by yomco 2 days ago

An intracellular second messenger unique to bacteria, c-di-GMP has gained appreciation as a key player in adaptation and virulence strategies, such as biofilm formation, persistence, and cytotoxici...

1 dig(s) Dig it Bury Topic: Organics

Designing specific protein-protein interactions using computation, experimental library screening, or integrated methods

submitted by egoroti 2 days ago

Given the importance of protein-protein interactions for nearly all biological processes, the design of protein affinity reagents for use in research, diagnosis or therapy is an important endeavor....

1 dig(s) Dig it Bury Topic: Organics

Age-dependent deamidation of glutamine residues in human γS crystallin: Deamidation and unstructured regions

submitted by beacamp 2 days ago

Human aging is associated with the deterioration of long-lived proteins. Gradual cumulative modifications to the life-long proteins of the lens may ultimately be responsible for the pronounced alte...

1 dig(s) Dig it Bury Topic: Organics

Copper-Catalyzed Highly Selective Semihydrogenation of Non-Polar Carbon-Carbon Multiple Bonds using a Silane and an Alcohol

submitted by firnonda 2 days ago

A copper catalyst bearing a suitable Xantphos derivative or NHC ligand was found to be highly efficient for the selective semihydrogenation of non-polar unsaturated compounds using a mixture of a s...

1 dig(s) Dig it Bury Topic: Organics

Copper-Catalyzed Coupling of (E)-Bromostilbene with Phenols/Azole: ESI-MS Detection of Intermediates by Using an Ionically-Tagged Ligand

submitted by JimSkyl 2 days ago

A system based on copper/1,10-phenanthroline efficiently promotes the coupling between phenols or pyrazole with (E)-bromostilbene. (E)-1-Aryloxy-1,2-diphenylethenes were obtained from the coupling ...

1 dig(s) Dig it Bury Topic: Organics

Regioselective Enzymatic Acylation of Aureolic Acids to Obtain Novel Analogues with Improved Antitumor Activity

submitted by HoldeJamie 2 days ago

A variety of aureolic acids was efficiently obtained by lipase-catalyzed regioselective acylation reactions of mithramycin and its analogues mithramycin SK and mithramycin SDK. The acylation took p...

1 dig(s) Dig it Bury Topic: Organics

Modular Palladium Bipyrazoles for the Isomerization of Allylbenzenes – Mechanistic Considerations and Insights into Catalyst Design and Activity, Role of Solvent, and Additive Effects

submitted by cristy56 2 days ago

The catalytic activity of novel bidentate N,N-chelated palladium complexes derived from electron excessive, backbone fused 3,3′-bipyrazoles in the selective isomerization of terminal arylpropenoi...

1 dig(s) Dig it Bury Topic: Organics

Silicon Fluorides for Acid-Base Catalysis in Glycosidations

submitted by 8miladiis 2 days ago

Adduct formation between alcohols as glycosyl acceptors and phenylsilicon trifluoride (PhSiF3) as catalyst permits acid-base-atalyzed glycosidations with O-glycosyl trichloroacetimidates as glycosy...

1 dig(s) Dig it Bury Topic: Organics

Electronegativity Governs Enantioselectivity: Alkyl-Aryl Cross-Coupling with Fenchol-Based Palladium-Phosphorus Halide Catalysts

submitted by yoro 2 days ago

A series of bulky, modular, monodentate, fenchol-based phosphites has been employed in an intramolecular palladium-catalyzed alkyl-aryl cross-coupling reaction. This enantioselective α-arylation o...

1 dig(s) Dig it Bury Topic: Organics

Iron(III) Chloride-Catalysed Aerobic Reduction of Olefins using Aqueous Hydrazine at Ambient Temperature

submitted by neronjonhigdi 2 days ago

A chemoselective reduction of olefins and acetylenes is demonstrated by employing catalytic amounts of ferric chloride hexahydrate (FeCl3⋅6 H2O) and aqueous hydrazine (NH2NH2⋅H2O) as hydrogen...

1 dig(s) Dig it Bury Topic: Organics