منابع مشابه
Solid L-α-alanine: spectroscopic properties and theoretical calculations
A spectroscopic study of L-α-alanine in different environments is presented, with special emphasis on the neutral to zwitterion transformation of this amino acid. Spectra of room temperature solids as deposited from the vapour and in KBr pellets are compared and discussed revealing some discrepancies. An assignment is proposed based on theoretical calculations of the solid structure. Vapour dep...
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Colorless crystals of l-alanine hydrochloride monohydrate, C(3)H(8)NO(2) (+)·Cl(-)·H(2)O, were obtained from a powder sample that had been left standing in a refrigerator for a few years. The structure displays several inter-molecular hydrogen bonds: the hydroxyl O atom is involved in a single hydrogen bond to the chloride anion, while the ammonium group forms one hydrogen bond to the chloride ...
متن کاملCatalytic Stereoinversion of L-Alanine to Deuterated D-Alanine.
A combination of an achiral pyridoxal analogue and a chiral base has been developed for catalytic deuteration of L-alanine with inversion of stereochemistry to give deuterated D-alanine under mild conditions (neutral pD and 25 °C) without the use of any protecting groups. This system can also be used for catalytic deuteration of D-alanine with retention of stereochemistry to give deuterated D-a...
متن کاملMicrowave-assisted Solid-phase(SPPS) and Solution-phase (SPS) Synthesis of Biological Dipeptide ((β-alanine-L histidine)
Peptides have shown Promising effect as pharmaceutics with the potential to treat a widevariety of diseases. Peptides are mostly synthesized by biological technology or chemicalmethods. Solution phasepeptide synthesis (SPS) and solid phase peptide synthesis (SPPS) aretwo major chemical techniques for peptidesproduction.In this research, the synthesis ofdipeptde(β-alanine-L-histidine)wasexamined...
متن کاملAffinity labeling of alanine aminotransferase by 3-chloro-L-alanine.
The pyridoxal form of alanine aminotransferase from pig heart catalyzes the a,/? elimination reaction with 3chloro-L-alanine as the substrate to form equimolar amounts of pyruvate, ammonia, and chloride. The maximum rate of the a,/3 elimination reaction was 2.5 pmol/min/mg at pH 7.0 (25”(Z), approximately 0.5% that of the transamination reaction between L-alanine and 2-oxoglutarate. Time-depend...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1967
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.40.1271