An Efficient Synthesis of the Protected Carbohydrate Moiety of Brasilicardin A
作者:Michael E. Jung、Pierre Koch
DOI:10.1021/ol2013704
日期:2011.7.15
The disaccharide was synthesized using a TMSOTf-mediated glycosylation of the 2-phthalimido-2-deoxyglucose donor 5 and the 3-hydroxyl group of the protected l-rhamnose derivative 4, which already bears the 3-hydroxybenzoate unit. The imidate 2 was coupled via TMSOTf-mediated glycosidation with cholesterol as a model aglycone followed by the selective cleavage of all the acetate groups to give the Brasilicardin