Patent ID: 7223570

Claim:
A branched cyclotetrasaccharide which is a glycosyl derivative of cyclotetrasaccharide represented by cyclo {→6)-α-D-glucopyranosyl-(1→3)-α-D-glucopyranosyl-(1→6)-α-D-glucopyranosyl-(1→3)-α-D-glucopyranosyl-(1→} and which has a structure represented by Formula 1; wherein in Formula 1, R 1 to R 12 each independently represents an optionally substituted glycosyl group or hydrogen, with the proviso that all of R 1 to R 12 are not hydrogen atom, and when either R 4 or R 10 is an optionally substituted glycosyl group, R 4 or R 10 as the glycosyl group is a member selected from glycosyl groups other than D-glucopyranosyl group.