Amino acid derivatives react with C60 at 110-120°C to form adduct compounds. The products were isolated by column chromatography and were identified by FD-MS, UV-Vis, FT-IR and 13C NMR spectroscopies.Wang Nai-XingLi Ji-ShengZhu Dao-Ben...
Synthesis and characterization of biodegradable poly(ester amide)s with pendant amine functional groups and in vitro cellular response. The purpose of this study was to use a convenient synthetic strategy to prepare a new family of biodegradable amino acid-based poly(ester amide)s (PEAs) wi... ...
Soc. 1949, 71 (3), 841-843. Modified Procedure for the Dakin-West Reaction: An Efficient and Convenient Method for a One-Pot Synthesis of β-Acetamido Ketones Using Silica Sulfuric Acid as Catalyst Tetrahedron Letters 2005, 46 (12), 2105-2108....
D-Amino acid oxidase [EC 1.4. 3. 3] catalyzes the oxidative deamination of β-chloro-D-alanine. The velocity of the enzyme reaction is one fourth that of the reaction with D-alanine, and the value of the Michaelis constant for β-chloro-D-alanine is 3.3 mM. Three intermediate spectral ...
The reaction of various N-tosylated α-amino acids with arenes in the presence of sulfuric acid afforded the corresponding diarylated derivatives in moderate yields, which were generated via decarbonylative arylation followed by Friedel-Crafts reaction of the generated tosylamide derivatives.关键词:De...
The direct catalytic asymmetric α−benzylation of N-unprotected amino acids is one of the simplest methods for preparing optically active unnatural α−benzyl amino acids. However, the strong nucleophilicity of the amino group and the weak α−carbon acidity of the N-unprotected amino acid ma...
A spectrophotometric method for the direct determination of cysteine in the presence of other naturally occurring amino acids A spectrophotometric method for the direct determination of cysteine in the presence of other naturally occurring amino acidsLiver Gaitonde,MK - 《Biochemical Journal》 被引量: ...
Treatment of the obtained dicarboxylic acid 3 with oxalyl chloride using a catalytic amount of DMF resulted in diacyl chloride that was then reacted with two individual (S)-amino alcohol 5a and 5b, prepared from the reduction of the corresponding chiral amino acids 4a and 4b54, to form (S,...
acidesters, triflates, chlorides, and even bromides in high yields. Additionally,carboxylic acid derivatives containing heterocycles, N-protected amino acids,and protic functionality can be coupled in 23−96% yield with a range ofsterically hindered, electron-rich, and electron-deficient aryl ...
9-amino-8-hydroxycedraneReaction of N-(benzyloxycarbonyl)aminobenzylphosphonous acid with ethyl orthoformate afforded two major products diethyl N-(benzyloxycarbonyl)aminobenzylphosphhite and ethyl (diethoxymethyl)[N-(benzyloxy-carbonyl)aminobenzyl]phosphmate, a product of addition of phosphonous acid to ...