528
3
Chemical Glycosylation Reactions
tive 3-hydroxyl group of 5β-cholestane-3α,7α,12α,25-tetrol using SnCl 4 in order to study the
transformations of bile alcohols and evaluate the biological effects on the blood-brain barrier ( > Scheme 4) [6]. Krausz et al. reported the synthesis of bioactive nucleoside analogues,
which have a spacer arm between the sugar and the base moieties, by SnCl 4 -mediated glycosylation of 3-alkyl N 4 -(3-hydroxylpropyl) 2-piperazinones with protected 1-O-acetyl ribofura⊡ Scheme 3
(Ref. [5])
⊡ Scheme 4
(Ref. [6])
⊡ Scheme 5
(Ref. [7])
3
Chemical Glycosylation Reactions
tive 3-hydroxyl group of 5β-cholestane-3α,7α,12α,25-tetrol using SnCl 4 in order to study the
transformations of bile alcohols and evaluate the biological effects on the blood-brain barrier ( > Scheme 4) [6]. Krausz et al. reported the synthesis of bioactive nucleoside analogues,
which have a spacer arm between the sugar and the base moieties, by SnCl 4 -mediated glycosylation of 3-alkyl N 4 -(3-hydroxylpropyl) 2-piperazinones with protected 1-O-acetyl ribofura⊡ Scheme 3
(Ref. [5])
⊡ Scheme 4
(Ref. [6])
⊡ Scheme 5
(Ref. [7])