抄録
Four kinds of trisaccharide, A, B, C, and D, were found to be present in the aqueous digest solution of Ginseng radix. A and C were isolated in a pure state by carbon column chromatography. A mixture of A, B, and C was hydrolysed with acetic acid to change A and C to a monosaccharide and disaccharide, (respectively), and hardly hydrolyzable B was obtained in a crystalline state. Based on the results of hydrolysis and periodate oxidation, the composition of the trisaccharides A and B was assumed to be respectively G-Fru-Fru and G-G-G. From the melting point, optical rotation, infrared absorption spectrum, RG, and MG, the trisaccharide A was identified as O-α-D-glucopyranosyl-(1→2)-O-β-D-fructofuranosyl-(1→2)-β-D-fractofuranoside (Fig. 2) and B as O-α-D-glucopyranosyl-(1→6)-O-α-D-glucopyranosyl-(1→4)-O-α-D-glucopyranose (Fig. 3).
