Indoles and auxins. VII. Active esters and anhydrides of 3-indoleacetic acid

1970 ◽  
Vol 48 (1) ◽  
pp. 177-179 ◽  
Author(s):  
Judith C. Hart ◽  
Eileen M. Matheson ◽  
O. Hutzinger
Keyword(s):  
Amino Acid ◽  
Methyl Ester ◽  
Indoleacetic Acid ◽  
Amino Acid Derivatives ◽  
Activated Esters ◽  
Active Esters ◽  
Glycine Methyl Ester

The synthesis of activated esters and anhydrides of 3-indoleacetic acid is described. Their usefulness for the preparation of amino acid derivatives is shown by reaction with glycine methyl ester.

Reaction of N-Benzoyl-2-bromoglycine Methyl Ester With Deprotonated Nitroalkanes: Synthesis of β-Nitro and α,β-Dehydro Amino Acid Derivatives

1988 ◽  
Vol 41 (7) ◽  
pp. 1063 ◽  
Author(s):  
VA Burgess ◽  
CJ Easton
Keyword(s):  
Amino Acid ◽  
Methyl Ester ◽  
Amino Acid Derivatives ◽  
Tributyltin Hydride ◽  
Acid Hydrochloride ◽  
Elimination Reactions ◽  
Diaminopropionic Acid

N-Benzoyl-2-bromoglycine methyl ester (1) reacted with the alkyl nitronates (2a-e) to give the corresponding β-nitro amino acid derivatives (4a-e). Elimination reactions of (4a-d) afforded the α,β-dehydro amino acid derivatives (5a-d). Treatment of the β- nitrovaline derivative (4b) with tributyltin hydride gave the valine derivative (8). Reduction of the β- nitroalanine derivative (4a) gave the β- aminoalanine derivative (9), characterized by hydrolysis to 2,3- diaminopropionic acid hydrochloride.

GAS CHROMATOGRAPHIC METHOD FOR THE SEPARATION AND ESTIMATION OF AMINO ACID DERIVATIVES

1965 ◽  
Vol 43 (3) ◽  
pp. 309-315 ◽  
Author(s):  
P. B. Hagen ◽  
W. Black
Keyword(s):  
Amino Acids ◽  
Gas Chromatography ◽  
Amino Acid ◽  
Methyl Ester ◽  
Chromatographic Method ◽  
Methyl Esters ◽  
Amino Acid Derivatives ◽  
Constant Proportion ◽  
Gas Chromatographic Method

It has been possible to prepare the N-trifluoroacetyl methyl esters of the 19 amino acids commonly found in proteins and to separate them by gas chromatography on two types of column, Carbowax 1540 and Carbowax 20M. There is a constant relation between the amount of each amino acid and the size of the recorded peak. This indicates either that the conversion to the derivative is quantitative or that a constant proportion of each amino acid is converted to its N-trifluoroacetyl methyl ester.

Mutagenicity of nitrosated α-amino acid derivatives N-acetyl-N' -nitrosotryptophan and its methyl ester in bacteria

1980 ◽  
Vol 1 (6) ◽  
pp. 523-532 ◽  
Author(s):  
S. Venitt ◽  
C. Crofton-Sleigh ◽  
S. L. Ooi ◽  
R. Bonnett
Keyword(s):  
Amino Acid ◽  
Methyl Ester ◽  
Amino Acid Derivatives

Synthesis and Immunomodulating Activity of New Amino Acid Derivatives of Glycyrrhizic Acid and Its Methyl Ester

2004 ◽  
Vol 30 (2) ◽  
pp. 148-153 ◽  
Author(s):  
R. M. Kondratenko ◽  
L. A. Baltina ◽  
E. V. Vasil'eva ◽  
Kh. M. Nasyrov ◽  
R. M. Kireeva ◽  
...  
Keyword(s):  
Amino Acid ◽  
Methyl Ester ◽  
Glycyrrhizic Acid ◽  
Amino Acid Derivatives ◽  
Immunomodulating Activity ◽  
Derivatives Of

Racemization studies of amino acid derivatives. 6. Rates of racemization and peptide bond formation of glutamic and aspartic acid active esters

1973 ◽  
Vol 38 (14) ◽  
pp. 2518-2521 ◽  
Author(s):  
Joseph Kovacs ◽  
Richard E. Cover ◽  
Robert H. Johnson ◽  
Theodore J. Kalas ◽  
George L. Mayers ◽  
...  
Keyword(s):  
Amino Acid ◽  
Aspartic Acid ◽  
Bond Formation ◽  
Peptide Bond ◽  
Amino Acid Derivatives ◽  
Peptide Bond Formation ◽  
Active Esters
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