ASSESSING THE IMPACT OF BACKBONE LENGTH AND CAPPING AGENT ON THE CONFORMATIONAL PREFERENCES OF A MODEL PEPTIDE: CONFORMATION SPECIFIC IR AND UV SPECTROSCOPY OF 2-AMINOISOBUTYRIC ACID

2015 ◽  
Author(s):  
Joseph Gord ◽  
Timothy Zwier ◽  
Matthew Kubasik ◽  
Daniel Hewett
Keyword(s):  
Uv Spectroscopy ◽  
Peptide Conformation ◽  
Capping Agent ◽  
Model Peptide ◽  
Aminoisobutyric Acid ◽  
Conformational Preferences ◽  
The Impact ◽  
Ir And Uv Spectroscopy

scholarly journals 7-Bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one

Molbank ◽  
10.3390/m1229 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1229
Author(s):  
Timofey N. Chmovzh ◽  
Oleg A. Rakitin
Keyword(s):  
Mass Spectrometry ◽  
Heterocyclic System ◽  
High Resolution Mass Spectrometry ◽  
Uv Spectroscopy ◽  
Hydrolysis Product ◽  
Selenium Dioxide ◽  
Biologically Active ◽  
Photovoltaic Materials ◽  
Organic Photovoltaic Materials ◽  
Ir And Uv Spectroscopy

New heterocyclic systems containing 1,2,5-chalcogenadiazoles are of great interest for the creation of organic photovoltaic materials and biologically active compounds. In this communication, 3,6-dibromopyridazine-4,5-diamine was investigated in reaction with selenium dioxide in order to obtain 4,7-dibromo-[1,2,5]selenadiazolo[3,4-d]pyridazine. We found that 7-bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one, the first representative of the new heterocyclic system, was isolated as a hydrolysis product of the corresponding 4,7-dibromoderivative. The structure of the newly synthesized compound was established by means of elemental analysis, high-resolution mass spectrometry, 1H, 13C NMR, IR and UV spectroscopy, and mass spectrometry.

Cyclic Constraints on Conformational Flexibility in γ-Peptides: Conformation Specific IR and UV Spectroscopy

2013 ◽  
Vol 117 (47) ◽  
pp. 12350-12362 ◽  
Author(s):  
Patrick S. Walsh ◽  
Ryoji Kusaka ◽  
Evan G. Buchanan ◽  
William H. James ◽  
Brian F. Fisher ◽  
...  
Keyword(s):  
Uv Spectroscopy ◽  
Conformational Flexibility ◽  
Ir And Uv Spectroscopy

Quantitative determination of the vinylthio groups in divinyl sulphide copolymers by IR and UV spectroscopy

1981 ◽  
Vol 23 (7) ◽  
pp. 1845-1847
Author(s):  
L.V. Morozova ◽  
E.I. Brodskaya ◽  
D.-S.D. Taryashinova ◽  
S.V. Amosova ◽  
B.A. Trofimov
Keyword(s):  
Quantitative Determination ◽  
Uv Spectroscopy ◽  
Ir And Uv Spectroscopy

scholarly journals Diastereo-specific conformational properties of neutral, protonated and radical cation forms of (1R,2S)-cis- and (1R,2R)-trans-amino-indanol by gas phase spectroscopy

2015 ◽  
Vol 17 (39) ◽  
pp. 25809-25821 ◽  
Author(s):  
Aude Bouchet ◽  
Johanna Klyne ◽  
Giovanni Piani ◽  
Otto Dopfer ◽  
Anne Zehnacker
Keyword(s):  
Electronic Structure ◽  
Gas Phase ◽  
Radical Cation ◽  
Amino Alcohol ◽  
Uv Spectroscopy ◽  
Conformational Properties ◽  
Gas Phase Spectroscopy ◽  
Ir And Uv Spectroscopy

The effects of ionisation and protonation on the geometric and electronic structure of a prototypical aromatic amino-alcohol with two chiral centres are revealed by IR and UV spectroscopy.

The Impact of Accurate Distances on UV Spectroscopy of White Dwarfs and Cataclysmic Variables

2009 ◽  
Author(s):  
Paul E. Barrett ◽  
Patrick Godon ◽  
Michael E. Van Steenberg ◽  
George Sonneborn ◽  
H. Warren Moos ◽  
...  
Keyword(s):  
White Dwarfs ◽  
Uv Spectroscopy ◽  
Cataclysmic Variables ◽  
The Impact

Etude en rmn 13C de bicyclo[4,n,0]alcanones-3 trans α-substitués. Influence de la nature et de l'orientation du substituant sur le déplacement chimique du 13C du carbonyle

1980 ◽  
Vol 58 (15) ◽  
pp. 1503-1511 ◽  
Author(s):  
Pierre Metzger ◽  
Eliette Casadevall ◽  
André Casadevall ◽  
Marie-José Pouet
Keyword(s):  
Convenient Method ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Uv Spectroscopy ◽  
Substituent Effects ◽  
Fixed Ring ◽  
C Nmr ◽  
Ir And Uv Spectroscopy

The 13C nmr spectra of α, αα, and αα′ substituted trans-fused bicyclo [4,n,0]alkan-3 ones, are described. Substituent effects are discussed in terms of their electron withdrawing character, axial or equatorial configuration, and cyclohexane deformation. 13C=O chemical shifts are shown to be based on the polarization of π bond and on C=O/X non-bonded interactions. As in ir and uv spectroscopy, 13C nmr is a convenient method for detecting an a substituent configuration in fixed ring ketones.

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