The Strecker synthesis as a source of amino acids in carbonaceous chondrites: Deuterium retention during synthesis

1993 ◽  
Vol 57 (19) ◽  
pp. 4713-4723 ◽  
Author(s):  
N.R Lerner ◽  
E Peterson ◽  
S Chang
2017 ◽  
Vol 53 (36) ◽  
pp. 4919-4921 ◽  
Author(s):  
C. Fernández-García ◽  
N. M. Grefenstette ◽  
M. W. Powner

A novel strategy for aminooxazoline-5′-phosphate synthesis in water from prebiotic feedstocks, which is generationally linked to Strecker synthesis of proteinogenic amino acids.


2011 ◽  
Vol 123 (6) ◽  
pp. 1429-1432 ◽  
Author(s):  
Tsuyoshi Mita ◽  
Jianyang Chen ◽  
Masumi Sugawara ◽  
Yoshihiro Sato

Nature ◽  
1963 ◽  
Vol 200 (4912) ◽  
pp. 1201-1201 ◽  
Author(s):  
KAORU HARADA

2005 ◽  
Vol 4 (1) ◽  
pp. 13-17 ◽  
Author(s):  
Anja C. Andersen ◽  
Henning Haack

The astrobiological relevance of carbonaceous chondrites is reviewed. It is argued that the primitive meteorites called carbonaceous chondrites provide a unique source of information about the materials and conditions in the Solar System during the earliest phases of its history, and its subsequent evolution. Presolar dust grains extracted from the carbonaceous chondrites provide direct information on the previous generations of stars that provided the materials present for planet formation. The organic material found in carbonaceous chondrites consist of amino acids, carboxylic acids and sugar derivatives. Part of the amino acids found show L-enantiomeric excesses, which indicates that homochirality on Earth could be a direct result of input from meteoritic material to the early Earth.


Author(s):  
V. M. Zhmakin

The nature of carbon, initial components, molecules of homochiral abiogenic synthesis and their preservation from decay and racemization for more than 4.5 billion years in carbonaceous chondrites has not been established. In the oxygen-free atmospheres of the nebula and early Earth, hydrogen and hydrogen-containing gases were oxidized with carbon monoxide and carbon dioxide to form carbon and water, as well as the intermediates of these reactions, formaldehyde and methane acid. Together with ammonia, they were the initial components of organic synthesis. According to the Rebinder rule, carbon adsorbs hydrogen well, including in organic molecules. In this connection, experiments with the assumed conditions of the early Earth were carried out by adsorption on carbon to obtain R-(rectus, Latin) ribose from formaldehyde, and S-(sinister) serine from formaldehyde, methane acid and ammonia. For other S-amino acids, a stereo chemical justification of their formation based on S-serine is given. For carbonaceous chondrites, the results of the above experiments were confirmed by the correlation of an increase in homochiral excess with an increase in the amount of hydrogen in aldonic acids and lactic acid with a coefficient of 0.94 and 0.85 in amino acids. The justification of the homochiral process will reduce the costs of searching for life on planets, for scientific research, for the production of medicines, perfumes, food, and so on. Doubts about the extraterrestrial origin of homochiral enantiomers in carbonaceous chondrites arise most often due to a lack of understanding of the reasons for their appearance. This work will significantly reduce such skepticism.


ChemInform ◽  
2011 ◽  
Vol 42 (23) ◽  
pp. no-no
Author(s):  
Tsuyoshi Mita ◽  
Jianyang Chen ◽  
Masumi Sugawara ◽  
Yoshihiro Sato

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