A new trisaccharide, α-d-glucopyranuronosyl-(1→3)-α-l-rhamnopyranosyl-(1→2)-α-l-rhamnopyranose from Chlorella vulgaris

A new acidic trisaccharide, α-d-glucopyranuronosyl-(1→3)-α-l-rhamnopyranosyl-(1→2)-α-l-rhamnopyranose, was isolated from the hydrolyzate of an acidic polysaccharide, glucuronorhamnan, of Chlorella vulgaris K-22 cells.