Further Anomeric Esters
3.3
561
⊡ Scheme 82
(Ref. [97])
⊡ Scheme 83
(Ref. [98])
which the acyl-protective group on glycosyl acceptors was essential for the β-stereoselectivity ( > Scheme 78) [93]. Furthermore, they applied this CB glycoside methodology to the
synthesis of the repeat unit of the O-antigen polysaccharide of the lipopolysaccharide (LPS)
from Gram-negative bacteria; a protected form of the trisaccharide repeat unit of the atypical
O-polysaccharide from Danish Helicobacter pylori strains ( > Scheme 79) [94], and a protected form of the tetrasaccharide repeat unit of the O-antigen polysaccharide from the E. coli
lipopolysaccharide ( > Scheme 80) [95]. An octaarabinofuranoside in arabinogalactan and
3.3
561
⊡ Scheme 82
(Ref. [97])
⊡ Scheme 83
(Ref. [98])
which the acyl-protective group on glycosyl acceptors was essential for the β-stereoselectivity ( > Scheme 78) [93]. Furthermore, they applied this CB glycoside methodology to the
synthesis of the repeat unit of the O-antigen polysaccharide of the lipopolysaccharide (LPS)
from Gram-negative bacteria; a protected form of the trisaccharide repeat unit of the atypical
O-polysaccharide from Danish Helicobacter pylori strains ( > Scheme 79) [94], and a protected form of the tetrasaccharide repeat unit of the O-antigen polysaccharide from the E. coli
lipopolysaccharide ( > Scheme 80) [95]. An octaarabinofuranoside in arabinogalactan and