The northern part of Miharamycin B which differs from the natural prod
uct by the absence of a 2-carbon branched chain in the sugar moiety, w
as prepared by a sequence of selective transformations from methyl i-O
-benzyl-alpha-D-gluco-hexodialdo-1,5-pyranoside 3. The key step is a r
egioselective glycosylation of 2-aminopurine. (C) 1996 Published by El
sevier Science Ltd.