ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 23, Number 1
JKCSEZ 23(1)
February 20, 1979 

Condensation of 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl bromide (2) with 1,2;3,4-di-O-isopropylidene-α-D-galactopyranose (3) in the presence of silver triflate and syn-collidine gave 1,2;3,4-di-O-isopropylidene-6-O-(3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-α-D-galactopyranose (4) in 86% yield. Cleavage of phthalimido group and de-O-acetylation with hydrazine, acetylation, and hydrolysis of isopropylidene and O-acetyl groups furnished 6-O-(2-acetamido-2-deoxy-β-D-glucopyranosyl)-D-galactopyranose (1) with overall yield of 65.8 % starting from 3. Some other derivatives of 1 which have free hydroxyl groups at the specific position have also been prepared from 4. These compounds could be used as precursors for further glycosidation reactions.