A-Aminosuccinic acids

Aminosuccinic acid. See D-Aspartic acid (+)-Aminosuccinic acid. See L-Aspartic acid DL-Aminosuccinic acid. See DL-Aspartic acid L-Aminosuccinic acid L-a-Aminosuccinic acid. See L-Aspartic acid... 

Synonyms (S)-Aminobutanedioic acid (+)-Aminosuccinic acid L-Aminosuccinic acid L-a-Aminosuccinic acid Asparagic acid L-Asparagic acid Aspartic acid (INCI) (S)-Aspartic acid Classification Amino acid Empirical C4H7NO4 Formula HOOCCH2CHNH2COOH Properties Colorless to wh. cryst., acid taste sol. in acids, alkalis si. sol. in water insol. in alcohol, ether m.w. 133.11 dens. 1.661 (12.5 C) m.p. 270 C... 

Pyridine/oxalyI chloride a-Amino- -earboxyearboxylic acid chlorides from a-aminosuccinic acids... 

Only a few biopolymers have been incorporated between LDH lamellae. For instance, the incorporation of poly(Q ,/ aspartate) was reported [89] to proceed by the condensation of aminosuccinic acid via a polysuccinimide intermediate, which rearranges to give polyaspartate at 220 °C. It was found that the basal spacing decreases during the condensation process from 11.1 to 9.0 A, giving an available space of only 4.2 A for the accommodation of... 

Aminopeptidase, Leucine (Aspergillus nigerwea., Aspergillus oryzae var., and other microbial species), (S3)19 DL-a-Amino-(3-phenylpropionic Acid, 292 L-a-Amino-P-phenylpropionic Acid, 292 DL-2-Aminopropanoic Acid, 18 L-2-Aminopropanoic Acid, 18 L-a-Aminosuccinamic Acid, 35 DL-Aminosuccinic Acid, 36, (S3)7 L-Aminosuccinic Acid, 37, (S2)l, (S3)7 Ammonia-Ammonium Chloride Buffer TS, 850... 

IAsu ].p-ANP(7-28). aminosuccinic acid aspartic acid, aminosultopride amisulpnde. amiodarone [ban, inn, usan) (Cordarone ) is a benzofuran derivative, a (Class III) antiarrhythmic used mainly to treat ventricular arrhythmias, amiphenazole [ban, inn] (DHA 245 amifenazole) is a phenylthiazole and has similar properties as doxapram as a CNS STIMULANT and RESPIRATORY STIMULANT. It was previously used intramuscularly to treat barbiturate and other CNS DEPRESSANT overdose. 

Aspartic acid, aminosuccinic acid, HOOC.CH2.CHNH2.COOH. Glutamic acid, a-aminoglutaric acid, HOOC.CH2.CH2.CHNH2.COOH. Diamino-monocarboxylic Acids. 

Aliphatic diazonium ions, on the other hand, are extremely unstable. Although they were obtained as very unstable intermediates in 1848 when Piria treated aspartic acid (2-aminosuccinic acid) with nitrosating reagents, leading to malic acid (2-hydroxysuccinic acid), they were not identified directly for almost 120 years. Piria s reaction allowed, in some cases, the substitution of a primary amino group by a hydroxy group. This reaction is also characterized by eliminations and rearrangements (see Chapt. 7). Aliphatic diazonium ions were postulated and subsequently identified as intermediates in the acid-catalyzed decomposition of aliphatic diazo compounds (see Sect. 7.2). 

As noted in Table 10.2 and in the footnote following Figure 7.3, a portion of the expanded Walden inversion involved treatment of (5)-(+)-2-aminosuccinic acid (aspartic acid) with NOBr (nitrosyl bromide) to produce (5)-(-)-2-bromosuccinic acid (Equation 10.49). We now know that NOBr acts as an oxidizing agent (see Section I [c]. Oxidation with Nitrous Acid and Schemes 10.18-10.20), which causes... 

For example, as discussed in Chapter 7, Walden carried out studies involving the chiral dicarboxyUc acid, 2-hydroxybutane-l,4-dioic acid (2-hydroxysuccinic acid maUc acid), which, as noted there, he was able to obtain from the chiral dicarboxylic acid, 2-aminobutane-l,4-dioic acid (2-aminosuccinic acid aspartic acid). These dioic acids were readily available to Walden because they are naturally occurring. The first occurs as a species found in the citric acid cycle (also called the tricarboxylic acid cycle or the Krebs cycle ) and will be discussed in more detail in Chapter 11. The second, an amino acid, will be discussed with other members of the same family in Chapter 12. 

Group III, Monoamino, Dicarboxylic Acids. Aspartic (aminosuccinic) and glutamic (a-aminoglutaric) acids. Both are monoamino, dicarboxylic acids their side chain, in other words, contains an extra carboxyl group with a dissociable proton. The resulting additional negative charge is very important for the electrochemical behavior of proteins. 

L-aspartic acid, also known as c-asparagic add, L-aminosuccinic acid, and 2-aminobutanedioic acid (denoted Asp or D), is a nonessential, acidic amino acid, as can be seen from the chemical structure (Fig. 15.3). On reviewing the literature, it becomes evident that Asp was discovered by Plisson in 1827, and it was obtained by simply boiling asparagine with a base (http // www.inchem.org/documents/icsc/icsc/eicsl439.htm). Aspartic acid naturally occurs in Leavo (L-form) and/or Dextro (o-form). 

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