Attrition-enhanced total resolution leads to homochiral families of amino acid derivatives
نویسندگان
چکیده
منابع مشابه
Amino derivatives of mannuronic acid.
The widespread occurrence of amino derivatives of the sugars in products of plant and animal origin suggests the possibility that amino derivatives of the uronic acids may likewise be of importance. The uronic acids have the characteristic structures of both aldoses and aldonic acids, and hence, like the aldoses, might be expected to yield glycosyl amines [1] and like the lactones of the aldoni...
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A range of N-protected-alpha-amino acyl-5,7-dinitroindolines 3a-z were prepared in good yields from commercially available N-protected-alpha-amino acids 1a-z by a two-step sequence of acylation and intramolecular amide N-arylation. Subsequent photochemical acylation of the N-protected-alpha-amino acyl-5,7-dinitroindolines 3e,g,r afforded the corresponding N-protected-alpha-amino acid amides 22e...
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Previous results indicated that performance of chicks fed a high level (10%) of poultry by-product meal(PBM) was lower than performance of chicks fed a corn-soybean meal (SBM) diet. The latter difference was hypothesized to be due to variation in digestible amino acid (AA) levels among the diets. This study evaluated diets containing PBM formulated on equivalent total AA basis vs. an equivalent...
متن کاملUrinary amino acid patterns in cystinuric families.
The urinary amino acid patterns in parents of four cystine stone formers were investigated in order to determine the genetic types of the cystinuric families. The concentrations of urinary cystine, lysine, arginine and ornithine in the subjects were compared with those in heterozygotes of cystinuria reported by Harris and Rosenberg. All of the subjects except one who excreted the amino acids in...
متن کاملAmino acid patterns in cystinuric families.
The delineation of cystinuria into two types, 'recessive' and 'incompletely recessive', according to a differential expression of the gene defect in carriers by urinary parameters (Harris et al., 1955a, b), has been further refined into three forms by including in phenotype analysis evidence for heterogeneity (Rosenberg, 1966; Rosenberg et al., 1966) of the accompanying intestinal transport def...
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ژورنال
عنوان ژورنال: Tetrahedron: Asymmetry
سال: 2010
ISSN: 0957-4166
DOI: 10.1016/j.tetasy.2010.04.007