Aliphatic amines in Antarctic CR2, CM2, and CM1/2 carbonaceous chondrites
作者： José C. Aponte , Hannah L. McLain , Jason P. Dworkin , Jamie E. Elsila
DOI: 10.1016/J.GCA.2016.06.018
关键词: Isotopic labeling 、 Astrobiology 、 Medicinal chemistry 、 Astrochemistry 、 Chondrite 、 Abiogenesis 、 Methylamine 、 Meteorite 、 Isopropylamine 、 Carbon 、 Chemistry
摘要: Abstract Meteoritic water-soluble organic compounds provide a unique record of the processes that occurred during formation solar system and chemistry preceding origins life on Earth. We have investigated molecular distribution, compound-specific δ13C isotopic ratios enantiomeric compositions aliphatic monoamines present in hot acid–water extracts carbonaceous chondrites LAP 02342 (CR2), GRA 95229 LON 94101 (CM2), LEW 90500 ALH 83100 (CM1/2). Analyses concentration these meteorites revealed: (a) CR2 studied here contain higher concentrations relative to analyzed CM2 chondrites; (b) decreases with increasing carbon number; (c) isopropylamine is most abundant monoamine chondrites, while methylamine amine species CM1/2 chondrites. The values chondrite do not correlate number atoms; however, 13C enrichment number. ranged from −1 +10‰, +41 +59‰. also observed racemic sec-butylamine, 3-methyl-2-butylamine, sec-pentylamine Additionally, we compared abundance composition those their structurally related amino acids. found are less than acids opposite being true used collective data evaluate different primordial synthetic pathways for understand potential common molecules may share meteoritic
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