The chemical reactions and pathways resulting in the formation of ajugose, the hexasaccharide beta-D-fructofuranosyl alpha-D-galactopyranosyl-(1->6)-alpha-D-galactopyranosyl-(1->6)-alpha-D-galactopyranosyl-(1->6)-alpha-D-galactopyranosyl-(1->6)-alpha-D-glucopyranoside, by a pathway in which galactinol:raffinose galactosyltransferase catalyzes chain elongation by transferring the alpha-galactosyl residue of galactinol to the oligosaccharide.
ajugose anabolism using galactinol:raffinose galactosyltransferase