Synthesis and glycosylating properties of ketopyranosyl donors

Article abstract of DOI:10.1016/0040-4020(95)00225-W

The preparation of heptulopyranosyl donors 13-15, 28, 29 and 3-octulopyranosyl donors 34, 35, having a non-participating group at C-3 or C-4, respectively, is described. Glycosylations of various acceptors with these donors gave exclusively α-linked ketosides. On the other hand, condensation of 3-O-benzoyl heptulopyranosyl donor 19 with an acceptor furnished an anomeric mixture of ketodisaccharides.