One-Carbon Compounds in the Prebiotic Syntheses of Biomolecules

摘要: The main one-carbon compounds that may have participated in the primitive Earth’s chemical syntheses are methane, carbon monoxide, dioxide, formaldehyde, formic acid, formamide, hydrogen cyanide, cyanamide and urea. Except urea, all these also known to be present atmosphere of other planets or interstellar dust clouds. Some species detected medium include methylidyne (CH), ion (CH+), cyanogen radical (CN), isocyanide (HNC), formyl (HCO), (HCO+), methyl alcohol (CH3OH), isocyanic acid (HNCO), monosulfide (CS), carbonyl sulfide (OCS) thioformaldehyde (H2CS). In addition, methyne (CH2), CO 2 + CO+ been comets (Oro, 1972; Schwartz, 1981). These highly reactive not found atmosphere, geosphere, hydrosphere earth, as such played any significant role prebiotic chemistry our planet--except form relatively more stable compounds, if they did exist for very short periods.