Starting from 4 and 3a or 3b, 82% of 7 was obtained. The '3C-nmr spectrum of 7 contained only one signal for an anomeric carbon atom (6 107.4), which was characteristic for aD- fructofuranosides. On the other hand, an anomeric mixture5 of 6-O-fructofuranosylglucose derivatives contained signals at 6 107.4 and 103.4 (see Table I). Deacylation of 7 afforded 6- Oc &D-fructofuranosyi-D-glucose'. Likewise, 8 (71%) and 9 (73%) were obtained from 3a ...
