The mechanism of chemical synthesis of adenosine has been reinvestigated. Depending on the reaction conditions and the presence of N6-protecting groups, ribosylation of adenine proceeds via different kinetic products: 3-riboadenine in strongly acidic media, 7-ribosylated derivative in the silyl method, and 1-(β-d-ribofuranosyl) adenine when applying N6- acyladenine and silylating conditions.
