scholarly journals 5′-Chloro-5′-deoxy-2′,3′-O-isopropylidene-6-fluoro nebularine

Molbank ◽  
10.3390/m1097 ◽  
2019 ◽  
Vol 2019 (4) ◽  
pp. M1097
Author(s):  
Andrea Patrizia Falanga ◽  
Maria Marzano ◽  
Monica Terracciano ◽  
Stefano D'Errico
Keyword(s):  
Spectroscopic Characterization ◽  
Side Product ◽  
Second Step ◽  
The Novel

In this paper, we report on the synthesis and spectroscopic characterization of the novel nucleoside 5′-chloro-5′-deoxy-2′,3′-O-isopropylidene-6-fluoro nebularine, obtained as a side product during the second step of the synthesis of 5′-fluoro-5′-deoxy-5-aminoimidazole-4-carboxamide-β-d-riboside (5′-F-AICAR), a non-phosphorylable analogue of 5-aminoimidazole-4-carboxamide-β-d-riboside (AICAR).

scholarly journals Structural, Functional, and Spectroscopic Characterization of the Substrate Scope of the Novel Nitrating Cytochrome P450 TxtE

ChemBioChem ◽  
2014 ◽  
Vol 15 (15) ◽  
pp. 2259-2267 ◽  
Author(s):  
Sheel C. Dodani ◽  
Jackson K. B. Cahn ◽  
Tillmann Heinisch ◽  
Sabine Brinkmann-Chen ◽  
John A. McIntosh ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Spectroscopic Characterization ◽  
The Novel

scholarly journals Spectroscopic characterization of the novel iron-sulfur cluster in Pyrococcus furiosus ferredoxin.

1990 ◽  
Vol 265 (15) ◽  
pp. 8533-8541
Author(s):  
R C Conover ◽  
A T Kowal ◽  
W G Fu ◽  
J B Park ◽  
S Aono ◽  
...  
Keyword(s):  
Pyrococcus Furiosus ◽  
Spectroscopic Characterization ◽  
The Novel ◽  
Iron Sulfur Cluster ◽  
Sulfur Cluster ◽  
Iron Sulfur

Synthesis and Structural Characterization of a Novel Symmetrical 2,10-Bis-Styryl-1-Benzopyrylium Dye

Synlett ◽  
2018 ◽  
Vol 29 (10) ◽  
pp. 1390-1394 ◽  
Author(s):  
Luís Cruz ◽  
Vânia Gomes ◽  
Nuno Mateus ◽  
Victor de Freitas
Keyword(s):  
Solar Cells ◽  
Structural Characterization ◽  
Aldol Condensation ◽  
Cycloaddition Reaction ◽  
Second Step ◽  
The Novel ◽  
Formation Pathway ◽  
Esi Ms

A novel symmetrical 2,10-bis-styryl-1-benzopyrylium dye was synthesized through two steps: In the first reaction an aldol condensation between 2,4,6-trihydroxybenzaldehyde and 3,4-dihydroxy­methylstyrylketone gave 5,7,3′,4′-tetrahydroxy-2-styryl-1-benzopyrylium; and in the second step this latter reacted with the same ketone by a cycloaddition reaction yielding the symmetrical 2,10-bis(3,4-di­hydroxystyryl)-pyrano-7-hydroxy-1-benzopyrylium. The dye was fully characterized by LC-DAD/ESI-MS and NMR 1D and 2D techniques, and a formation pathway was proposed. The novel dye obtained revealed extended π-conjugation (λmax 556 nm) and catechol groups in its composition, which is very important for applications as a photosensitizer for dye-sensitive solar cells (DSSCs).

Synthesis and Spectroscopic Characterization of β-Di-, β-Tri-, and β-Hexapeptides Built with (S)-2-Methylene-3-aminoalkanoic Acids Derived from Alanine, Valine, and Leucine

2004 ◽  
Vol 57 (9) ◽  
pp. 859 ◽  
Author(s):  
Daniel J. Bierbaum ◽  
Dieter Seebach
Keyword(s):  
Amino Acid ◽  
Solid State ◽  
Methyl Esters ◽  
Spectroscopic Characterization ◽  
The Novel ◽  
Solution Structures ◽  
Acid Methyl ◽  
Amino Acid Methyl Esters

Methylthiomethylation and subsequent sulfoxidation and pyrolysis of the N-Boc-protected β3-amino acid methyl esters derived from Ala, Val, and Leu provided the α-methylene esters; these were then used to synthesize the β-peptides specified in the title (step-by-step and fragment coupling in solution). The novel β-peptides were fully characterized, but neither solid-state nor solution structures were found.

Spectroscopic Characterization of Supramolecular Chiral Porphyrin Homoassociates at the Air–Water Interface

2014 ◽  
Vol 68 (11) ◽  
pp. 1235-1240 ◽  
Author(s):  
Takunori Harada ◽  
Hiroshi Moriyama ◽  
Hiromi Takahashi ◽  
Kazuo Umemura ◽  
Haruo Yokota ◽  
...  
Keyword(s):  
Analytical Procedure ◽  
Spectroscopic Characterization ◽  
Water Soluble ◽  
Water Interface ◽  
The Novel ◽  
Reversible Transformation ◽  
Long Period ◽  
Aggregation Structure ◽  
Air Water Interface

The water-soluble 4-sulfonatophenyl meso-substituted porphyrin (TPPS) dye exhibits a transformation to a chiral self-aggregate from the non-aggregated species (diprotonated H4TPPS2–) at low concentration (no more than 1 × 10−5 M). Immobilization of supramolecular chiral porphyrin homoassociates was mediated by the electrostatic interaction between the anionic TPPS molecule and cationic surfactant monolayer at the air–water interface. With the immobilization, a reversible transformation from monomeric TPPS to J-aggregate ( M→J) could be changed into an irreversible ( M→J), which is desirable for stabilization of aggregation structure for a long period. The novel finding was achieved using a fine-tuned specialized solid-state circular dichroism (CD) spectrophotometer and derived analytical procedure to obtain artifact-free CD signals. To our knowledge, this is the first report achieving the chiral control of a homoassociate induced by a chiral surfactant at the air–water interface, indicating that the handedness of the formed homoassociate could be determined.

Characterization of the pore structure of nanoporous activated carbons produced from wood waste

Holzforschung ◽  
2013 ◽  
Vol 67 (5) ◽  
pp. 587-594 ◽  
Author(s):  
Galina Dobele ◽  
Darya Vervikishko ◽  
Aleksandrs Volperts ◽  
Nikolay Bogdanovich ◽  
Evgeny Shkolnikov
Keyword(s):  
Betula Pendula ◽  
Carbon Materials ◽  
Activated Carbons ◽  
Second Step ◽  
The Novel ◽  
Surface Areas ◽  
Evaporation Technique ◽  
Specific Surface Areas ◽  
Nanoporous Carbon Materials

Abstract Highly developed nanoporous carbon materials have been prepared by a two-stage thermocatalytic process. In the first step, alder (Alnus rhombifolia) and birchwood (Betula pendula) were carbonized with and without a dehydration catalyst (H3PO4); in the second step, the material was activated by means of NaOH. The dependence of the porous structure of activated carbons from process parameters was characterized by the novel limited evaporation technique. Specific surface areas, pore volumes, and radii were calculated according to the Derjaguin-Broekhoff-de Boer theory. The tests of activated carbons as electrodes in supercapacitors demonstrated their high potential for this application.

Electrochemical and Spectroscopic Characterization of the Novel Charge-Transfer Ground State in Diimine Complexes of Ytterbocene

2003 ◽  
Vol 42 (18) ◽  
pp. 5551-5559 ◽  
Author(s):  
Ryan E. Da Re ◽  
Christopher J. Kuehl ◽  
Mac G. Brown ◽  
Reginaldo C. Rocha ◽  
Eric D. Bauer ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Ground State ◽  
Spectroscopic Characterization ◽  
The Novel ◽  
Diimine Complexes
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