N-α-Naphthylacetyl-amino Acids and Related Compounds N-Acylamino Acids. III
نویسندگان
چکیده
منابع مشابه
Use of esters of N-hydroxysuccinimide in the synthesis of N-acylamino acids.
Several crystalline N-hydroxysuccinimide esters of short- and long-chain fatty acids have been synthesized. These compounds react with free amino acids to form preferentially N-acylamino acids. The reaction of the N-hydroxysuccinimide esters with hydroxylamine and the behavior of the N-acylamino acids on thin-layer chromatography are described.
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Selective N ,N-diallylation and N ,N, O-triallylation of free amino acids in the presence of catalytic amounts of RuCp*(MeCN)(3)PF(6) is reported. The crucial influence of the solvent makes these allylation reactions selectively possible.
متن کاملThe Synthesis and Bacitracin-catalysed Hydrolysis of Aryl Esters of N-acylamino Acids.
1. A new method for synthesizing aryl esters of N-acylamino acids is described. The unsymmetrical anhydride resulting from the interaction of an N-acylamino acid and diphenylketen is allowed to react with a phenol. Cleavage of the anhydride by the phenol usually occurs in the desired direction. 2. Bacitracin has been examined as an enzyme model by determining its catalytic activity towards the ...
متن کاملA simple method for preparation of N-mono- and N,N-di-alkylated a-amino acids
Reactions of a-amino acids with ketones under hydrogenation conditions using 20% Pd(OH)2/C as the catalyst gave N-mono-alkylated amino acids in high yields. Reductive methylation of N-mono-alkylated amino acids under the same hydrogenation conditions at 50°C afforded N,N-di-alkylated amino acids in excellent yields. This simple method has been used to synthesize N-monoand N,N-di-alkylated amino...
متن کاملReactions of N-ethylmaleimide with peptides and amino acids.
N-Ethylmaleimide (NEM) has been much used for the chemical modification of proteins, and it is usually assumed that reaction occurs specifically at the thiol groups of cysteinyl residues. However, NEM has been shown to react also with the acamino group of peptides and with the imidazole group of histidine (Smyth, Nagamatsu & Fruton, 1960), and with the a-amnino group of certain amino acids (Smy...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1971
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.91.3_406