Nucleic Acids Research, 1990, Vol. 18, No. 16 4779-4782
© 1990
CHEMISTRY |
Chemical synthesis and spontaneous glycosidic hydrolysis of 3-methyl-2'-deoxyguanosine and 2'-deoxywyosine [1]
Institute of Bioorganic Chemistry, Polish Academy of Sciences Noskowskiego 12/14, 61-704 Poznan, Poland
*To whom correspondence should be addressed
Received May 18, 1990. Revised July 13, 1990. Accepted July 13, 1990.
3-methyl-2'-deoxyguanosine (1a) is obtained from 27'-deoxyguanosine by a reaction sequence involving conversion into tricyclic 1, N-2-isopropeno derivative (4-desmethyl-2'-deoxywyosine, 3a) followed by methylation which results in 2'-deoxywyosine (2a) and final removal of the 1, N-2 blocking system. Compounds 1a and 2a undergo spontaneous hydrolytic cleavage of their glycosidic bonds at pH 7,37°C, which makes them the most labile of all known nucleosides composed of structural units occurring in nature.