Further Anomeric Esters
3.3
535
⊡ Scheme 21
(Ref. [30])
⊡ Scheme 22
(Ref. [25b])
⊡ Scheme 23
(Ref. [25c], [31])
On the other hand, Roush and coworkers reported the synthesis of the functionalized C-D-E
trisaccharide precursor of Olivomycin A, in which, particularly, the 2-deoxy-2-iodo-3-methylα-L-mannopyranosyl linkage was stereoselectively introduced by using the glycosyl acetate
donor ( > Scheme 26) [34]. This new α-glycosylation protocol was applied to the synthesis
3.3
535
⊡ Scheme 21
(Ref. [30])
⊡ Scheme 22
(Ref. [25b])
⊡ Scheme 23
(Ref. [25c], [31])
On the other hand, Roush and coworkers reported the synthesis of the functionalized C-D-E
trisaccharide precursor of Olivomycin A, in which, particularly, the 2-deoxy-2-iodo-3-methylα-L-mannopyranosyl linkage was stereoselectively introduced by using the glycosyl acetate
donor ( > Scheme 26) [34]. This new α-glycosylation protocol was applied to the synthesis