MG SRC="/isubscribe/journals/orlef7/10/i05/figures/ol7029257n00002.gif" ALIGN="left" HSPACE=5> |
Indiu
m-
mediated alkynylation reaction was studied for the direct preparation of
C-glycosides. Easily available starting sugar derivatives withan acetyl group at the ano
meric position were tested as electrophiles toward alkynylindiu
m reagents under Barbier conditions. Good yieldsand stereoselectivities were observed during the reaction. The alkynylation was applied to the synthesis of an
mages/gifchars/alpha.gif" BORDER=0>-(1
mages/entities/rarr.gif">6)-
C-disaccharide analogueof iso
maltoside.