Biology
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007asbio...7..433j&link_type=abstract
Astrobiology, Volume 7, Issue 3, pp. 433-442.
Biology
4
Astrobiology, Molecular Processes, Laboratory Methods, Interstellar Medium, Molecules, Interstellar Medium, Clouds
Scientific paper
Prebiotic possibilities for the synthesis of interstellar ribose through a protic variant of the formose reaction under gas-phase conditions were studied in the absence of any known catalyst. The ion-molecule reaction products, diose and triose, were sought by mass spectrometry, and relevant masses were observed. Ab initio calculations were used to evaluate protic formose mechanism possibilities. A bilateral theoretical and experimental effort yielded a physical model for glycoaldehyde generation whereby a hydronium cation can mediate formaldehyde dimerization followed by covalent bond formation leading to diose and water. These results advance the possibility that ion-molecule reactions between formaldehyde (CH2O) and H3O+ lead to formose reaction products and inform us about potential sugar formation processes in interstellar space.
Abrell Leif
Adamowicz Ludwik
Apponi Aldo Joseph
Jalbout Abraham F.
Polt Robin
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