ChemInform Abstract: METALLA DERIVATIVES OF AMINO ACIDS AND PEPTIDES. 2. RHENA β-KETOIMINE DERIVATIVES OF SEVERAL AMINO ACID ESTERS

1984 ◽  
Vol 15 (13) ◽  
Author(s):  
D. AFZAL ◽  
C. M. LUKEHART
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Amino Acid Esters ◽  
Derivatives Of ◽  
Acid Esters

scholarly journals The application of ketimine derivatives of amino acids to peptide synthesis

1976 ◽  
Vol 29 (7) ◽  
pp. 1591 ◽  
Author(s):  
AP Hope ◽  
B Halpern
Keyword(s):  
Amino Acids ◽  
Acetic Acid ◽  
Amino Acid ◽  
Biologically Active ◽  
Amino Acid Esters ◽  
Protecting Group ◽  
Active Peptides ◽  
Biologically Active Peptides ◽  
Derivatives Of ◽  
Acid Esters

N-(2-Hydroxyarylmethy1ene)amino acids have been coupled with amino acid esters to form sterically pure N-protected dipeptide esters. The protecting group can be removed by means of 80% acetic acid under conditions which leaves the t-butyloxycarbonyl protecting group intact. Biologically active peptides which are C-terminal partial sequences of substance P were prepared and were shown to have the expected vasodilator, spasmogenic and venoconstrictor properties.

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.

ChemInform Abstract: A SYNTHESIS OF N-PHTHALOYL AMINO ACIDS AND AMINO ACID ESTERS UNDER MILD CONDITIONS

1973 ◽  
Vol 4 (40) ◽  
pp. no-no
Author(s):  
D. A. HOOGWATER ◽  
D. N. REINHOUDT ◽  
T. S. LIE ◽  
J. J. GUNNEWEG ◽  
H. C. BEYERMAN
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Amino Acid Esters ◽  
Mild Conditions ◽  
Acid Esters

Nickel-catalyzed carbodifunctionalization of N-vinylamides enables access to γ-amino acids

2020 ◽  
Vol 56 (17) ◽  
pp. 2642-2645 ◽  
Author(s):  
Zhi-Fang Yang ◽  
Chang Xu ◽  
Xing Zheng ◽  
Xingang Zhang
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Tandem Reaction ◽  
Amino Acid Esters ◽  
Arylboronic Acids ◽  
Acid Esters

A nickel-catalyzed tandem reaction of N-vinylamides with arylboronic acids and bromodifluoroacetate has been developed. The reaction efficiently furnishes a series of protected α,α-difluoro-γ-amino acid esters.

scholarly journals The reactions of α-amino acids and α-amino acid esters with high valent transition metal halides: synthesis of coordination complexes, activation processes and stabilization of α-ammonium acylchloride cations

RSC Advances ◽  
2017 ◽  
Vol 7 (17) ◽  
pp. 10158-10174 ◽  
Author(s):  
Lorenzo Biancalana ◽  
Marco Bortoluzzi ◽  
Eleonora Ferretti ◽  
Mohammad Hayatifar ◽  
Fabio Marchetti ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Transition Metal ◽  
Transition Metals ◽  
Coordination Compounds ◽  
Coordination Complexes ◽  
Amino Acid Esters ◽  
Metal Halides ◽  
High Valent ◽  
Acid Esters

We describe the synthesis of rare coordination compounds of early transition metals with α-amino acids and α-amino acid esters, the unusual C–C dimerization ofl-proline, and the stabilization of reactive α-ammonium acylchloride cations.

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