Nucleosides XI. Synthesis and antiviral evaluation of 5'-alkylthio-5'-deoxy quinazolinone nucleoside derivatives as S-adenosyl-L-homocysteine analogs.


4-amino-1-(beta-D-ribofuranosyl)quinazolin-2-one (3) was prepared by a direct glycosylation of 4-aminoquinazolin-2-one (7) using the Vorbruggen's silylation method and provided exclusively the beta-anomer. This quinazoline nucleoside and its 2',3'-O-isopropylidene derivative (9) did not undergo the coupling reaction with dialkyl disulfides in the presence… (More)


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