. "The chemical reactions and pathways resulting in the formation of triterpenoid compounds, terpenoids with six isoprene units." . . . "triterpenoid biosynthetic process" . "triterpene biosynthesis" . "triterpene biosynthetic process" . "triterpenoid anabolism" . "triterpenoid biosynthesis" . "triterpenoid formation" . "triterpenoid synthesis" . . . . . .