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Formation of L Amino Acids and D Sugars, and Amplification of their Enantioexcesses in Aqueous Solutions, Under Simulated Prebiotic Conditions

Authors

  • Ronald Breslow

    Corresponding author
    1. Department of Chemistry, Columbia University, New York, NY 10027, USA phone: +1 212-854-2170 fax: +1 212-854-2755
    • Department of Chemistry, Columbia University, New York, NY 10027, USA phone: +1 212-854-2170 fax: +1 212-854-2755
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Errata

This article is corrected by:

  1. Errata: Retraction: Formation of L Amino Acids and D Sugars, and Amplification of their Enantioexcesses in Aqueous Solutions, Under Simulated Prebiotic Conditions Volume 52, Issue 11-12, 1124, Article first published online: 18 December 2012

Abstract

The Murchison meteorite delivered five α-methyl amino acids to Earth with small excesses of the L enantiomer; later, additional examples were found and such compounds were also found in other meteorites. I describe our work using them under prebiotic conditions to form normal proteinogenic amino acids with an excess of the L enantiomers, and to amplify such excesses to dominant concentration in solution. I also extend this work to show how D sugars, such as D-ribose, can have been formed and amplified in solution. I also show the high concentration amplifications of D-nucleosides that can be obtained under credible prebiotic conditions. The simple theory of such amplifications, and corrections resulting from solvation effects, are described along with modern ideas of the source of such α-methyl amino acids in meteorites.

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