Direct TLC Optical Resolution of Two Sulphur-Containing DL-a-Amino Acids Using Vancomycin as Chiral Selector
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چکیده
منابع مشابه
The biochemistry and pharmacology of excitatory sulphur-containing amino acids.
1,-Glutamate is now well established as the predominant transmitter at fast-acting excitatory synapses in the mammalian central nervous system. Other amino acids such as L-aspartate and several acidic sulphur-containing amino acids (SAAs) which exhibit potent depolarizing actions similar to that of Lglutamate [I-31 are known to exist in the brain and/or are present in the brain under pathologic...
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1. Young male rats were used in five experiments to study the utilization for growth of methionine sulphoxide, and the relationship between the sulphoxide content in the diet and the level of microbiologically determined methionine activity in blood or blood plasma. In one nitrogen-balance experiment methionine and methionine sulphoxide were compared as supplements to a casein diet and a fish-m...
متن کاملEnantioselective Extraction of Ofloxacin Enantiomers Using Ester Alcohol L-Tartarate as Chiral Selector
The distribution behavior of ofloxacin enantiomers was examined in the aqueous and organic solvent of a two-phase system containing chiral selector L-tartarate. The effect of extraction equilibrium time, buffer pH, organic solvents and length of alkyl chain of L-tartarate on the partition coefficients and enantioselectivity of racemic ofloxacin were investigated, respectively. The L-tartara...
متن کاملIntegrated microreaction system for optical resolution of racemic amino acids.
We developed a novel microreaction system for optical resolution of racemic amino acids. This device, which is based on a continuous microfluidic system, consists of an enzyme-immobilized microreactor and a microextractor. Use of the enzyme-microreactor, which was prepared by membrane formation on the microchannel surface, enabled a highly enantioselective reaction for a racemic amino acid deri...
متن کاملThe nitrogen-sparing effect of methionine sulphoxide and some other sulphur-containing amino acids.
The nitrogen-sparing effect of methionine, methionine sulphoxide, homocystine, cystine and choline was studied in rats by determining dialy N excretions during 5 d after changing from a high-protein diet to a protein-free diet, L-glutamic acid was used as a negative control. 2. L-, D- and DL-methionine were equally active in sparing N. L-methionine sulphoxide, DL-homocystine and L-cystine were ...
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ژورنال
عنوان ژورنال: Asian Journal of Chemistry
سال: 2015
ISSN: 0970-7077,0975-427X
DOI: 10.14233/ajchem.2015.18802