Investigations of the clustering reactions of protonated amino acid esters by high pressure mass spectrometry and quantum chemical calculations

2006 ◽  
Vol 255-256 ◽  
pp. 301-311 ◽  
Author(s):  
A. Simon ◽  
T.B. McMahon
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Amino Acid ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Amino Acid Esters ◽  
Protonated Amino Acid ◽  
Acid Esters

scholarly journals Molecular recognition of isomeric protonated amino acid esters monitored by ESI-mass spectrometry

2014 ◽  
Vol 10 ◽  
pp. 825-831 ◽  
Author(s):  
Andrea Liesenfeld ◽  
Arne Lützen
Keyword(s):  
Mass Spectrometry ◽  
Amino Acid ◽  
Isotope Effects ◽  
Amino Acid Esters ◽  
Guest Molecules ◽  
Protonated Amino Acid ◽  
Host Guest Complex ◽  
Binding Event ◽  
Esi Mass Spectrometry ◽  
Acid Esters

Two new 9,9’-spirobifluorene-derived crown ethers were prepared and used to recognise constitutionally isomeric amino acid derivatives. The performance of the receptors was evaluated by ESI-mass spectrometry using the isomer labelled guest method (ILGM). This method revealed the preferred binding of L-norleucine and L-leucine compared to L-isoleucine for both receptors. Furthermore, non-covalent isotope effects demonstrate the relevance of dispersive interactions for the overall binding event. These effects also provide hints for the relative spatial orientation of the guest molecules within the host–guest complex, and thereby prove the importance of the spirobifluorene moiety for the observed binding of the protonated amino acid esters.

scholarly journals Synthesis of Derivatives of closo-Dodecaborate Anion Based on Amino Acid Esters

2021 ◽  
Vol 66 (11) ◽  
pp. 1616-1620
Author(s):  
A. V. Burdenkova ◽  
A. P. Zhdanov ◽  
I. N. Klyukin ◽  
N. A. Selivanov ◽  
A. Yu. Bykov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Amino Acids ◽  
Amino Acid ◽  
Nmr Spectroscopy ◽  
Amino Acid Esters ◽  
Substitution Reactions ◽  
Multinuclear Nmr Spectroscopy ◽  
Esi Mass Spectrometry ◽  
Derivatives Of ◽  
Acid Esters

Abstract This work proposes a new method for the synthesis of N-borylated amino acids based on nucleophilic substitution reactions in the [B12H11IPh]– anion. Esters of glycine and L-phenylalanine were used as nucleophiles. The structure of the products has been determined by multinuclear NMR spectroscopy, IR spectroscopy, and ESI mass spectrometry.

Asymmetric Preparation of anti-β-Hydroxyα-amino Acid Esters

Synfacts ◽  
2006 ◽  
Vol 2006 (12) ◽  
pp. 1253-1253
Author(s):  
Y. Hamada ◽  
K. Makino ◽  
M. Iwasaki
Keyword(s):  
Amino Acid ◽  
Amino Acid Esters ◽  
Acid Esters

Antiviral activity of glycyrrhizic acid conjugates with amino acid esters against Zika virus

2021 ◽  
Vol 294 ◽  
pp. 198290
Author(s):  
Lidia A. Baltina ◽  
Mann-Jen Hour ◽  
Ya-Chi Liu ◽  
Young-Sheng Chang ◽  
Su-Hua Huang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Antiviral Activity ◽  
Zika Virus ◽  
Glycyrrhizic Acid ◽  
Amino Acid Esters ◽  
Acid Esters
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